Subminiature fuzz button radio frequency coaxial load

Abstract

The utility model discloses a subminiature fuzz button radio frequency coaxial load which comprises an inner conductor, an insulator and an outer conductor. The resistor is arranged in a left end hole of the inner conductor, the elastic piece fuzz button and the left end of the probe are arranged in a right end hole of the inner conductor, the inner conductor and the probe are respectively fixed in an inner hole of the insulator through barbs and steps, the left end of the inner conductor and the right end of the probe extend out of the insulator, and the insulator is fixed in an inner hole of the outer conductor through barbs and extends out of the outer conductor; the right end of the resistor is in soldering connection with the outer conductor inner hole. According to the utility model, the right end of the connector is screwed into the antenna mounting plate, and the welding-free reliable connection between the exposed probe and the printed board is realized through the elastic member hair button, so that the defects of complex mounting and dismounting and high processing cost in a welding mode are avoided. The load structure at the left end of the connector can absorb idle power in a system, reflection and interference are avoided, and the height of an insertion part is reduced, so that the height of an antenna array is reduced, and miniaturization, integration and light weight of an antenna product are realized.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency coaxial load technology, and in particular to an ultra-small button radio frequency coaxial load. Background Technology

[0002] Currently, connectors in antenna arrays mostly employ a method where the outer conductor of the connector is soldered or threaded onto the mounting plate, and the inner conductor at the connector's tail end passes through a metallized via on the printed circuit board (PCB) attached to the end face of the metal structure on the mounting plate before being soldered to the PCB. For virtual elements used to enhance antenna array performance, they are often plugged into connectors with RF coaxial loads of the same series to absorb unwanted power and avoid reflection and interference. However, the presence of the connector-load plugging point significantly limits the height of the antenna array, hindering the development of antenna products towards miniaturization, integration, and lightweight design. Furthermore, the connection method of soldering the inner conductor at the connector's tail end to the PCB is complex to install and disassemble, resulting in high manufacturing costs.

[0003] Against this backdrop, there is an urgent need for an ultra-small radio frequency coaxial load that can reliably connect to the printed circuit board. Utility Model Content

[0004] The purpose of this invention is to provide an ultra-small button-shaped radio frequency coaxial load to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An ultra-miniature button-shaped RF coaxial load includes an inner conductor, a resistor, an elastic button, a probe, an insulator, and an outer conductor. The resistor is installed in the hole at the left end of the inner conductor, and the elastic button and the left end of the probe are installed in the hole at the right end. The inner conductor and the probe are fixed in the inner hole of the insulator, and the left end of the inner conductor and the right end of the probe extend out of the insulator. The insulator is fixed in the inner hole of the outer conductor by barbs and extends out of the outer conductor. The right end of the resistor is soldered to the inner hole of the outer conductor.

[0007] Preferably, the inner conductor is a stepped cylindrical shape, with an elastic hole matching the resistance at the left end of the inner conductor extending out of the insulator, a barb for inserting into the insulator in the middle part, and a button and a blind hole for inserting the left end of the probe at the right end.

[0008] Preferably, the probe is cylindrical with a thicker middle and thinner ends. A portion of the left end of the probe extends into the right end hole of the inner conductor, and the left end face of the probe contacts the right end face of the elastic button. The step in the middle of the probe is used for positioning in the step hole of the insulator that it is adapted to. The outer diameter of the probe is clearance-fitted with the inner holes of the insulator and the inner conductor, respectively. The distance between the left end step surface of the probe and the right end face of the inner conductor is greater than the distance of the probe extending out of the right end face of the insulator. This is to ensure that the right end face of the probe can move in the inner hole of the insulator after being subjected to force, and to compress the button until the right end face of the probe is flush with the right end face of the insulator.

[0009] Preferably, the right end of the outer conductor is threaded into the mounting plate, and the left end is a cylinder with an outer diameter smaller than the minor diameter of the thread. A slot for inserting a threaded installation tool is provided along the left end face. The interior of the outer conductor is provided from right to left with a cylindrical hole with barbs in the middle for insulator installation, a cylindrical hole for impedance matching with the inner conductor 1, a conical hole for impedance matching with the resistor, a cylindrical hole for installing the resistor, and a conical solder flow hole for welding the resistor. The two cylindrical holes at the right end of the outer conductor are stepped holes for positioning when the insulator is installed.

[0010] Preferably, the inner conductor and the probe are fixed in the inner hole of the insulator by barbs and steps, respectively.

[0011] Compared with existing technologies, this invention has the following advantages: The right end of the connector is screwed into the antenna mounting plate, and the exposed probe is reliably connected to the printed circuit board without soldering via an elastic button, thus avoiding the disadvantages of complex installation and disassembly and high processing costs associated with soldering methods. The load structure on the left end of the connector can absorb unwanted power in the system, preventing reflection and interference. This invention changes the previous two-part plug-in structure to a one-piece structure, reducing the height of the plug-in part and thus lowering the height of the antenna array, enabling the antenna product to be miniaturized, integrated, and lightweight. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a left view of the present invention;

[0014] Figure 3 This is an installation diagram of this utility model;

[0015] In the diagram: 1-Inner conductor, 2-Resistor, 3-Elastic button, 4-Probe, 5-Insulator, 6-Outer conductor, A-Slot, B-Solder, C-Antenna mounting plate, D-Printed circuit board. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] As shown in the figure, an ultra-miniature button-shaped RF coaxial load includes an inner conductor 1, a resistor 2, an elastic button 3, a probe 4, an insulator 5, and an outer conductor 6. The resistor 2 is installed in the hole at the left end of the inner conductor 1, and the elastic button 3 and a portion of the left end of the probe 4 are installed in the hole at the right end. The inner conductor 1 and the probe 4 are fixed in the inner hole of the insulator 5 by barbs and steps, respectively, and the left end of the inner conductor 1 and the right end of the probe 4 extend out of the insulator 5. The insulator 5 is fixed in the inner hole of the outer conductor 6 by barbs and extends out of the outer conductor 6. The right end of the resistor 2 is soldered to the inner hole of the outer conductor 6.

[0018] The inner conductor 1 is a stepped cylindrical shape. The left end of the inner conductor 1, which extends out of the insulator 5, is provided with an elastic hole that matches the resistor 2. The middle part is provided with barbs that can be inserted into the insulator 5. The right end is provided with a blind hole into which the button 3 and the left end of the probe 4 are inserted.

[0019] The probe 4 is a cylinder that is thicker in the middle and thinner at both ends. A portion of the left end of the probe 4 extends into the right end hole of the inner conductor 1, and the left end face of the probe 4 contacts the right end face of the elastic button 3. The step in the middle of the probe 4 is used for positioning in the stepped hole of the insulator 5 that it is adapted to. The outer diameter of the probe 4 is clearance-fitted with the inner holes of the insulator 5 and the inner conductor 1 respectively. The distance between the stepped surface of the left end of the probe 4 and the right end face of the inner conductor 1 is greater than the distance of the probe 4 extending out of the right end face of the insulator 5, ensuring that the right end face of the probe 4 can move in the inner hole of the insulator 5 after being subjected to force, and compress the button 3 until the right end face of the probe 4 is flush with the right end face of the insulator 5.

[0020] The outer conductor has a threaded connection on the right end for screwing into the mounting plate, and a cylindrical connection on the left end with an outer diameter smaller than the minor diameter of the thread. A slot for inserting a threaded installation tool is provided along the left end face. The outer conductor 6 has, from right to left, a cylindrical hole with barbs in the middle for inserting the insulator 5, a cylindrical hole for impedance matching with the inner conductor 1, a conical hole for impedance matching with the resistor 2, a cylindrical hole for inserting the resistor 2, and a conical solder flow hole for welding the resistor 2. The two cylindrical holes on the right end of the outer conductor 6 are stepped holes for positioning the insulator 5 during insertion.

[0021] When using the product, first insert a special threaded mounting and dismounting jig into the slot A of the outer conductor 6, and then screw it into the mounting hole of the antenna mounting plate C. During the process of screwing the outer conductor 6 into the threaded hole of the mounting plate C, the exposed insulator 5 extends into the right end hole of the mounting plate C. As the screwing depth increases, the right end face of the probe 4 begins to contact the conductive layer of the printed circuit board D. At the same time, the probe 4 is resisted by the printed circuit board D and begins to compress the elastic button 3 to move to the left until the outer conductor 6 is completely screwed into the threaded hole of the mounting plate C, that is, when the right end face of the outer conductor 6 contacts the stepped surface of the mounting plate C, the probe 4 is completely embedded in the inner hole of the insulator 5. That is, the right end face of the probe 4 is completely in contact with the right end face of the insulator 5 and the end face of the antenna end printed circuit board D, realizing a reliable connection between the probe 4 and the printed circuit board D without soldering. This avoids the disadvantages of complicated installation and disassembly and high processing costs of the soldering method.

[0022] In this invention, resistor 2 is inserted into the left end hole of outer conductor 6, approximately 0.2 mm below the end face of the left end hole, forming a solder groove. This groove is filled with solder B after soldering and is in a leveled state. The right end of resistor 2 is inserted into the slotted elastic insertion hole of inner conductor 1. In this way, resistor 2 is fixed axially and radially, thereby integrating the load structure with the antenna printed circuit board structure. The previous two-part insertion structure is changed to a one-piece structure, reducing the height of the insertion part, thereby reducing the height of the antenna array, and enabling the antenna product to achieve miniaturization, integration, and weight reduction.

[0023] The above description is a preferred embodiment of the present utility model. For those skilled in the art, any changes, modifications, substitutions and variations made to the implementation methods without departing from the principles and spirit of the present utility model, based on the teachings of the present utility model, still fall within the protection scope of the present utility model.

Claims

1. An ultra-miniature button-shaped radio frequency coaxial load, characterized in that, The device includes an inner conductor, a resistor, an elastic button, a probe, an insulator, and an outer conductor. The resistor is installed in the hole at the left end of the inner conductor, and the elastic button and the left end of the probe are installed in the hole at the right end. The inner conductor and the probe are fixed in the inner hole of the insulator, and the left end of the inner conductor and the right end of the probe extend out of the insulator. The insulator is fixed in the inner hole of the outer conductor by barbs and extends out of the outer conductor. The right end of the resistor is soldered to the inner hole of the outer conductor.

2. The ultra-miniature button-shaped RF coaxial load as described in claim 1, characterized in that, The inner conductor is a stepped cylinder. The left end of the inner conductor extending out of the insulator has an elastic hole that matches the resistance. The middle part has barbs that can be inserted into the insulator. The right end has a button and a blind hole into which the left end of the probe is inserted.

3. The ultra-miniature button-shaped RF coaxial load as described in claim 1, characterized in that, The probe is cylindrical, thicker in the middle and thinner at both ends. A portion of the left end of the probe extends into the hole at the right end of the inner conductor, and the left end face of the probe contacts the right end face of the elastic button. The step in the middle of the probe is used for positioning in the step hole of the insulator that it is adapted to. The outer diameter of the probe is clearance-fitted with the inner holes of the insulator and the inner conductor, respectively. The distance between the left end step surface of the probe and the right end face of the inner conductor is greater than the distance the probe extends out of the right end face of the insulator. This is to ensure that the right end face of the probe can move in the inner hole of the insulator after being subjected to force, and to compress the button until the right end face of the probe is flush with the right end face of the insulator.

4. The ultra-miniature button-shaped RF coaxial load as described in claim 1, characterized in that, The outer conductor has a threaded connection on the right end for screwing into the mounting plate, and a cylinder with an outer diameter smaller than the minor diameter of the thread on the left end. A slot for inserting a threaded installation tool is provided along the left end face. The outer conductor has, from right to left, a cylindrical hole with barbs in the middle for inserting the insulator, a cylindrical hole matching the impedance of the inner conductor, a conical hole matching the impedance of the resistor, a cylindrical hole for inserting the resistor, and a conical solder flow hole for welding the resistor. The two cylindrical holes on the right end of the outer conductor are stepped holes for positioning when the insulator is inserted.

5. The ultra-miniature button-shaped RF coaxial load as described in claim 1, characterized in that, The inner conductor and the probe are fixed in the inner hole of the insulator by barbs and steps, respectively.

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