Radio frequency relay contact system

Abstract

The utility model discloses a radio frequency relay contact system, which comprises a circular base and a circular cover plate fixed on the upper end face of the circular base, a plurality of reed grooves are uniformly distributed on the upper end face of the circular base along the radial direction, and a plurality of radio frequency connector mounting holes are arranged on the circular base. The radio-frequency connector mounting holes are respectively positioned at the outer ends of the plurality of reed grooves and the center of the circular base, and the radio-frequency connector mounting hole positioned at the center of the circular base is completely communicated with the inner ends of the plurality of reed grooves; a sheet-shaped reset reed is arranged above the circular cover plate, the lower ends of a plurality of push rods arranged corresponding to the reed grooves penetrate through the sheet-shaped reset reed and the circular cover plate and then are horizontally connected with movable reeds, and the middles of the movable reeds are fixed to the lower ends of the push rods and located in the corresponding reed grooves respectively. And radio frequency connectors are coaxially fixed below the circular base through radio frequency connector mounting holes, and the inner ends of the radio frequency connectors are respectively positioned below the corresponding movable contact springs. And a sheet-shaped restoring reed is adopted, so that restoring counterforce is provided for the relay more uniformly and stably.

Description

Technical Field

[0001] The utility model belongs to the technical field of relay manufacturing, and in particular relates to a radio frequency relay contact system. Background Art

[0002] The contact system in the existing RF relay adopts a hot riveting design of spring, push rod and movable spring. In order to ensure the flexible movement of the push rod assembly, this structure needs to be designed with interference fit between the spring and the cover plate hole. The spring will shake as the product moves, causing the reaction force provided to change. At the same time, due to the large friction area between the spring and the push rod, it is easy to produce excess wear after a long period of mechanical life test. These excess wear are brought into the cavity during the movement of the push rod. If they adhere to the contact between the movable spring and the conductor inside the connector, it will cause the movable spring and the conductor inside the connector to be non-conductive or the contact resistance will increase, thereby causing product failure and affecting the reliability of the relay. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the utility model provides a radio frequency relay contact system. The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0004] A radio frequency relay contact system comprises a circular base and a circular cover plate fixed on the upper end surface of the circular base, the upper end surface of the circular base being evenly distributed with a plurality of reed grooves in the radial direction, the circular base being provided with a plurality of radio frequency connector mounting holes, the radio frequency connector mounting holes being respectively located at the outer ends of the plurality of reed grooves and the center of the circular base, and the radio frequency connector mounting hole located at the center of the circular base being fully connected with the inner ends of the plurality of reed grooves; a sheet-like restoring reed is provided above the circular cover plate, the lower ends of a plurality of push rods arranged corresponding to the plurality of reed grooves are horizontally connected with a moving reed after passing through the sheet-like restoring reed and the circular cover plate, the middle parts of the moving reed are fixed to the lower ends of the push rods and are respectively located in the corresponding reed grooves, radio frequency connectors are coaxially fixed below the circular base through the radio frequency connector mounting holes, and the inner ends of the radio frequency connectors are respectively located below the corresponding moving reeds.

[0005] Furthermore, the sheet-like restoring spring is a circular structure with a circular hole in the center, and is evenly divided radially from the circular hole into a plurality of sectors whose outer ends are connected to each other, and the outer end of each sector is fixed to the top of the circular cover plate by a bolt and a positioning block, and the positioning block is mounted on the bolt and is located between the sheet-like restoring spring and the circular cover plate; the push rod is arranged corresponding to each sector, and the push rod passes through the inner end of each sector respectively.

[0006] Furthermore, a rectangular hole is radially provided at the inner end of the sector; the push rod is T-shaped, the vertical part of the T is rectangular, and the gap of the vertical part passes through the rectangular hole, the gap passes through the circular cover plate, and the horizontal part of the T is pressed against the upper surface of the sector.

[0007] Furthermore, the outer ends of the sectors are each provided with elasticity enhancement holes.

[0008] Furthermore, a clearance groove is provided at a position where the reed groove is opposite to the lower end of the push rod.

[0009] Beneficial effects of the utility model:

[0010] 1. The utility model adopts a sheet-shaped restoring spring, which can provide a more uniform and stable restoring reaction force for the RF relay. Compared with the traditional spring design to provide product restoring reaction force, the sheet-shaped restoring spring can effectively reduce the problem of restoring reaction force changes caused by the physical deformation of the spring after a long-term life test of the relay, making the provided reaction force more stable and uniform;

[0011] 2. By adopting the lamellar restoring spring and the clearance between the push rod and the lamellar restoring spring, the friction area between the two is reduced to the greatest extent, thereby reducing the generation of wear and tear and ensuring the working reliability of the relay after a long-term mechanical life test.

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 is a schematic diagram of the structure of the base;

[0016] Figure 4 It is a schematic diagram of the structure of a sheet-shaped restoring reed.

[0017] Description of reference numerals:

[0018] 1-round base; 2-bolt; 3-round cover plate; 4-flaky restoring spring; 5-push rod; 6-moving spring; 7-connector; 8-travel block; 1-1-reed slot; 1-2-connector hole; 1-3-installation slot; 1-4-give way slot; 4-1-elasticity enhancement hole; 4-2-rectangular hole. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with specific embodiments, but the implementation methods of the present invention are not limited thereto.

[0020] See also Figure 1~Figure 4 The utility model embodiment discloses a radio frequency relay contact system, which specifically includes a circular base 1 and a circular cover plate 3 fixed to the upper end surface of the circular base 1 by bolts 2, the upper end surface of the circular base 1 has six reed grooves 1-1 evenly distributed radially, and the circular base 1 is provided with seven radio frequency connector mounting holes 1-2; the radio frequency connector mounting holes 1-2 are respectively located at the outer ends of the six reed grooves 1-1 and the center of the circular base 1, and the radio frequency connector mounting hole 1-2 located at the center of the circular base 1 is completely connected with the inner ends of the six reed grooves 1-1; a sheet-like recovery reed 4 is arranged above the circular cover plate 3, and the lower ends of six push rods 5 arranged corresponding to the six reed grooves 1-1 pass through the sheet-like recovery reed 4 and the lower end of the circular cover plate 3 The movable spring piece 6 is riveted horizontally, and the middle part of the movable spring piece 6 is fixed to the lower end of the push rod 5 and is respectively located in the corresponding spring piece groove 1-1. Seven RF connectors 7 are coaxially fixed to the bottom of the circular base 1 through the RF connector mounting hole 1-2. The seven RF connectors 7 extend from the mounting groove 1-3 at the lower end of the circular base 1, and are threadedly connected with the mounting groove 1-3 of the circular base 1 through external threads, and the inner conductors at the upper ends are all located in the corresponding RF connector mounting holes 1-2, and the inner ends of the RF connectors 7 are respectively located below the corresponding movable spring piece 6, that is, the inner ends of the six movable spring pieces 6 are all located above the RF connector 7 at the center of the circular base 1, and the outer ends are located above the corresponding RF connector 7. When the push rod 5 moves downward, it drives the sheet-shaped recovery spring piece 4 and the movable spring piece 6 to move downward together until the movable spring piece 6 contacts the inner conductor of the RF connector 7 and has a certain overtravel, thereby realizing reliable conversion of RF signals.

[0021] Preferably, the sheet-like restoring spring 4 is a disc structure with a circular hole in the center, and is evenly divided radially from the circular hole into six sectors whose outer ends are connected to each other, and the outer end of each sector is fixed on the top of the circular cover plate 3 by bolts 2 and positioning blocks 8, and the six sectors are independent of each other and do not interfere with each other during operation. The positioning block 8 is mounted on the bolt 2 and is located between the sheet-like restoring spring 4 and the circular cover plate 3, and is used to confirm the installation height of the sheet-like restoring spring 4, adjust the reaction force of the restoring spring 4, and ensure the radio frequency parameters of the product; the push rod 5 is set corresponding to each sector, and the push rod 5 passes through the inner end of each sector respectively. At the same time, in order to increase the elasticity of the sheet-like restoring spring 4, elasticity enhancement holes 4-1 are set at the outer ends of the six sectors.

[0022] Furthermore, since the movable spring 6 is fixed to the lower end of the push rod 5, in order to avoid that the distance between the movable spring 6 and the bottom surface of the push rod 5 is too far, resulting in the movable spring 6 being unable to contact the inner conductor of the RF connector 7 after the push rod 5 abuts against the bottom surface of the spring slot 1-1, a clearance groove 1-4 is provided at a position relative to the lower end of the push rod 5. By providing the clearance groove 1-4, the movable spring 6 can always be reliably in contact with the inner conductor of the connector.

[0023] Preferably, the push rod 5 is T-shaped, and a rectangular hole 4-2 is radially arranged at the inner end of the sector, and the vertical part of the T is rectangular, and the gap of the vertical part passes through the rectangular hole 4-2, and the gap passes through the circular cover plate 3, and the horizontal part of the T is pressed against the upper surface of the sector. By providing a T-shaped push rod 5 and providing corresponding rectangular holes on the sheet-like reset spring 4 and the circular cover plate 3 to match them, the push rod 5 will not rotate when moving up and down, ensuring reliable contact with the inner conductor of the RF connector 7.

[0024] The contact system adopts a strip line structure enclosed in a cavity, the contact part adopts a bridge structure, and a standard coaxial connector is used at the output end of the product. The restoring reaction force of the RF relay adopting the contact system is provided by a restoring reed with an overall sheet structure, and the stress, modal, and RF performance of the product contact system and the restoring reed are simulated by simulation software. On the premise of ensuring the RF parameters, the restoring reed structure in the embodiment of the utility model is designed to ensure the mechanical parameters of the product, so that the restoring reed can provide the product with a uniform and stable restoring reaction force during operation, thereby ensuring the working reliability of the relay.

[0025] The working principle of the contact system of the utility model is as follows:

[0026] When the RF relay is energized, the coil in the electromagnetic assembly generates electromagnetic force, driving the armature to move, pushing the push rod 5 in the contact system to move downward, thereby driving the moving spring 6 to move downward and contact the inner conductor of the RF connector 7, thereby conducting with the corresponding inner conductor of the RF connector 7 to realize the product function. In this process, the sheet-like recovery spring 4 is deformed along the movement direction of the push rod 5 and generates a corresponding reaction force; when the relay is de-energized, the electromagnetic force generated by the coil in the electromagnetic assembly disappears, and under the reaction force of the sheet-like recovery spring 4, the driving push rod 5 drives the moving spring 6 to disconnect from the corresponding inner conductor of the RF connector 7, and the product returns to its initial state.

[0027] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A radio frequency relay contact system, characterized in that: It comprises a circular base and a circular cover plate fixed on the upper end surface of the circular base, wherein the upper end surface of the circular base is evenly distributed with a plurality of reed grooves in the radial direction, and the circular base is provided with a plurality of RF connector mounting holes, wherein the RF connector mounting holes are respectively located at the outer ends of the plurality of reed grooves and the center of the circular base, and the RF connector mounting hole located at the center of the circular base is fully connected with the inner ends of the plurality of reed grooves; a sheet-like restoring reed is provided above the circular cover plate, and the lower ends of the plurality of push rods corresponding to the plurality of reed grooves are horizontally connected with a moving reed after passing through the sheet-like restoring reed and the circular cover plate, and the middle part of the moving reed is fixed to the lower end of the push rod and is respectively located in the corresponding reed groove, and a RF connector is coaxially fixed to the lower part of the circular base through the RF connector mounting hole, and the inner ends of the RF connector are respectively located below the corresponding moving reed.

2. The radio frequency relay contact system according to claim 1, characterized in that: The sheet-like restoring spring is a circular structure with a circular hole in the center, and is evenly divided radially from the circular hole into a plurality of sectors whose outer ends are connected to each other, and the outer end of each sector is fixed to the top of the circular cover plate by a bolt and a positioning block, and the positioning block is mounted on the bolt and is located between the sheet-like restoring spring and the circular cover plate; the push rod is arranged corresponding to each sector, and the push rod passes through the inner end of each sector respectively.

3. The radio frequency relay contact system according to claim 2, characterized in that: A rectangular hole is radially arranged at the inner end of the sector; the push rod is T-shaped, the vertical part of the T is rectangular, and the gap of the vertical part passes through the rectangular hole, the gap passes through the circular cover plate, and the horizontal part of the T is pressed against the upper surface of the sector.

4. The radio frequency relay contact system according to claim 2 or 3, characterized in that: The outer ends of the sectors are each provided with elasticity enhancement holes.

5. The radio frequency relay contact system according to claim 4, characterized in that: A yielding groove is arranged at a position where the reed groove is opposite to the lower end of the push rod.

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