Microwave switch coil framework

Abstract

The invention provides a microwave switch coil framework which comprises a framework body, the framework outer wall of the framework body serves as a winding supporting area, the winding supporting area is used for winding filling of an enameled wire, and the enameled wire is connected and fixed through a welding wire to serve as an enameled wire welding leading-out end after being wound. And the enameled wire welding leading-out end is arranged on the end face of the framework body. The welding points of the enameled wire are arranged on the end face of the framework, direct contact between the welding end of the enameled wire and the coil winding is effectively avoided, the welding points are prevented from possibly puncturing a paint layer on the surface of the enameled wire, and insulation of the coil assembly is improved; secondly, welding points are moved to the end face of the framework, the winding space of the framework is not occupied, and the winding capacity of the framework is improved.

Description

Technical Field

[0001] The invention relates to the technical field of microwave switches, and in particular to a microwave switch coil frame. Background Art

[0002] Microwave switch products can be widely used in aerospace, electronic countermeasures, radar, mobile communications, test instruments and other fields. With the miniaturization and high density of communication equipment, the volume of microwave switches is required to be as small as possible. The coil skeleton is an important component of the microwave switch, and its structural design will directly affect the volume design of the microwave switch and the serialization and expansion design of the product.

[0003] The existing microwave switch coil skeleton is generally designed to be cylindrical or rectangular, and most of them are made of non-metallic materials. The enameled wire is directly wound on the outer wall of the skeleton, and then a certain space is left in the enameled wire winding area for welding and fixing the enameled wire and the external control wire. The above-mentioned existing coil skeleton welding and fixing area occupies a part of the enameled wire filling area, reducing the winding capacity of the skeleton. At the same time, the welding point between the enameled wire and the control wire is placed on the outer wall of the enameled wire. If the welding wrapping is not handled properly, the welding point may pierce the paint layer on the surface of the enameled wire, directly affecting the insulation and voltage resistance index design of the electromagnetic component. Summary of the invention

[0004] In order to solve the above problems, the present invention aims to propose a microwave switch coil skeleton. By setting the enameled wire welding point on the end face of the skeleton, the direct contact between the enameled wire welding end and the coil winding is effectively avoided, and the welding point is prevented from piercing the paint layer on the surface of the enameled wire, thereby improving the insulation of the coil assembly; secondly, the welding point is moved to the end face of the skeleton, does not occupy the winding space of the skeleton, and improves the winding capacity of the skeleton.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A microwave switch coil skeleton comprises a skeleton body, wherein the skeleton outer wall of the skeleton body serves as a winding support area, wherein the winding support area is used for winding and filling of enameled wires, and after winding, the enameled wires are connected and fixed by welding wires as enameled wire welding lead-out ends, and the enameled wire welding lead-out ends are arranged on the end surface of the skeleton body.

[0007] Furthermore, the enameled wire welding lead-out end is provided with a boss, the side surface of the boss is provided with an enameled wire guide groove, and the top of the boss is provided with a terminal.

[0008] Furthermore, the terminal is a metal pin.

[0009] Furthermore, the inner hole of the skeleton body is provided with a magnet placement area for installing a permanent magnet.

[0010] Furthermore, the inner hole of the skeleton is a polygonal structure, the inner groove of the polygonal structure is evenly spaced with a plurality of magnet placement areas, the inner groove of the polygonal structure is also provided with a magnet fixing area, and the magnet fixing area is installed with a non-magnetic structure for fixing and isolating adjacent permanent magnets for protection.

[0011] Furthermore, the non-magnetic conductive structure is a polygonal sleeve and a fixing ring.

[0012] Furthermore, the permanent magnet is rectangular or fan-shaped.

[0013] Beneficial effects: The present invention effectively avoids direct contact between the welding end of the enameled wire and the coil winding by arranging the welding point of the enameled wire on the end face of the skeleton, prevents the welding point from piercing the paint layer on the surface of the enameled wire, and improves the insulation of the coil assembly; secondly, the welding point is moved to the end face of the skeleton, does not occupy the winding space of the skeleton, and improves the winding capacity of the skeleton. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 A schematic diagram of the structure of a microwave switch coil skeleton according to an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A magnified view of part A in FIG.

[0017] Figure 3 The figure is a schematic diagram of the inner hole structure of the microwave switch coil skeleton according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] Example 1

[0020] See also Figure 1-3 A microwave switch coil skeleton, comprising a skeleton body 1, the skeleton outer wall of the skeleton body 1 serving as a winding support area 10, the winding support area 10 being used for winding and filling of enameled wire, the enameled wire being connected and fixed by welding wire after winding as an enameled wire welding lead-out end 11, the enameled wire welding lead-out end 11 being arranged on the end face of the skeleton body 1.

[0021] It should be noted that the existing enameled wire welding lead-out terminal occupies a part of the winding support area, reducing the winding capacity of the skeleton. At the same time, the welding point between the enameled wire and the control wire is placed on the outer wall of the enameled wire. If the welding wrapping is not handled properly, the welding point may pierce the paint layer on the surface of the enameled wire, directly affecting the insulation and withstand voltage index design of the electromagnetic component. In this embodiment, the enameled wire welding point (enameled wire welding lead-out terminal) is set on the end face of the skeleton, which effectively avoids direct contact between the enameled wire welding end and the coil winding, prevents the welding point from piercing the paint layer on the surface of the enameled wire, and improves the insulation of the coil assembly; secondly, the welding point is moved to the end face of the skeleton, does not occupy the winding space of the skeleton, and improves the winding capacity of the skeleton.

[0022] In a specific example, the enameled wire welding lead-out terminal 11 is provided with a boss 110 , a side surface of the boss 110 is provided with an enameled wire guiding groove 111 , and a terminal 112 is provided on the top of the boss 110 .

[0023] The boss of this embodiment is used to fix the control terminal terminal, and the function of the enameled wire guide groove is that after the enameled wire is wound, the enameled wire terminal is guided by the guide groove and then wound onto the terminal. The advantages of this design are: first, the enameled wire is wound onto the terminal terminal, which effectively avoids direct contact between the welding end of the enameled wire and the coil winding, prevents the welding point from piercing the paint layer on the surface of the enameled wire, and improves the insulation of the coil assembly; secondly, the welding point is moved to the boss on the end face of the skeleton, which does not occupy the winding space of the skeleton, thereby increasing the winding capacity of the skeleton.

[0024] In a specific example, the terminal 112 is a metal pin.

[0025] In a specific example, the inner hole 12 of the skeleton body 1 is provided with a magnet placement area 120 for installing a permanent magnet.

[0026] It should be noted that when designing the magnetic circuit of a traditional microwave switch, the permanent magnet is generally designed outside the coil assembly. The entire electromagnetic assembly is large in size. At the same time, the magnetic circuit has a large amount of magnetic leakage and there is a certain amount of electromagnetic interference to nearby sensitive electromagnetic products, which limits the use of the product.

[0027] In this embodiment, a magnet placement area is designed in the inner hole of the coil frame, and the magnet is assembled on the inner wall of the coil frame. This design not only reduces the volume of the product's electromagnetic component, but also reduces the magnetic leakage of the electromagnetic component's magnetic circuit, improves the magnetic efficiency and spatial anti-electromagnetic interference capability, and is particularly suitable for use environments that have certain requirements for electromagnetic interference, and is also easy to miniaturize and expand the product's multi-throw design.

[0028] In a specific example, the inner hole 12 of the skeleton is a polygonal structure, and the inner groove of the polygonal structure is evenly spaced with a plurality of magnet placement areas 120, and the inner groove of the polygonal structure is also provided with a magnet fixing area 121, and the magnet fixing area 121 is installed with a non-magnetic structure for fixing and isolating adjacent permanent magnets for protection.

[0029] It should be noted that due to the magnetic nature of the permanent magnet, the inner wall of the polygonal structure assembled in the inner hole of the skeleton will absorb the magnetic part when it encounters a magnetic object if it is small, and move directly to the magnetic object when it is large. Therefore, it is necessary to design a non-magnetic structure around the permanent magnet to fix and isolate it for protection to prevent the magnet from moving or absorbing tiny magnetic excess objects.

[0030] In a specific example, the non-magnetic conductive structure is a polygonal sleeve and a fixing ring.

[0031] The non-magnetic polygonal sleeve and the fixing ring of this embodiment can well fix and isolate the adjacent permanent magnets to prevent the magnets from moving and absorbing unnecessary magnetic objects.

[0032] In a specific example, the permanent magnet is rectangular or fan-shaped.

[0033] In this embodiment, the rectangular or fan-shaped permanent magnets are designed in a certain number and are evenly distributed around the inner hole of the coil frame.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A microwave switch coil skeleton, characterized in that: The invention comprises a skeleton body (1), wherein the outer wall of the skeleton body (1) serves as a winding support area (10), wherein the winding support area (10) is used for winding and filling the enameled wire, and after the enameled wire is wound, it is connected and fixed by welding wire to serve as an enameled wire welding lead-out end (11), and the enameled wire welding lead-out end (11) is arranged on the end face of the skeleton body (1).

2. The microwave switch coil skeleton according to claim 1, characterized in that: The enameled wire welding lead-out end (11) is provided with a boss (110), a side surface of the boss (110) is provided with an enameled wire guide groove (111), and a terminal (112) is provided on the top of the boss (110).

3. The microwave switch coil skeleton according to claim 2, characterized in that: The terminal (112) is a metal pin.

4. The microwave switch coil skeleton according to claim 1, characterized in that: The frame inner hole (12) of the frame body (1) is provided with a magnet placement area (120) for installing a permanent magnet.

5. The microwave switch coil skeleton according to claim 4, characterized in that: The inner hole (12) of the skeleton is a polygonal structure, the inner groove of the polygonal structure is evenly spaced with a plurality of magnet placement areas (120), the inner groove of the polygonal structure is also provided with a magnet fixing area (121), and the magnet fixing area (121) is installed with a non-magnetic conductive structure for fixing and isolating adjacent permanent magnets for protection.

6. The microwave switch coil skeleton according to claim 5, characterized in that: The non-magnetic conductive structure is a polygonal sleeve and a fixing ring.

7. The microwave switch coil skeleton according to claim 5, characterized in that: The permanent magnet is rectangular or fan-shaped.

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