Annular inductor assembly convenient for adjusting inductance value

Abstract

The utility model discloses a ring-shaped inductor component convenient to adjust inductance value, which comprises a ring-shaped inductor, an insulating base, a metal slip ring and a movable metal rod, the ring-shaped inductor comprises a magnetic core and an enameled coil, the ring-shaped inductor and the metal slip ring are respectively arranged on the insulating base, the T-shaped end of the movable metal rod is arranged between the metal slip ring and the ring-shaped inductor, and the movable metal rod is arranged on the insulating base. The two sides of the T-shaped end are in contact with the inner wall of the metal slip ring and the corresponding enameled coil on the annular inductor respectively and can slide in the circumferential direction. According to the utility model, by utilizing the structure that the movable metal rod is in conductive contact with one turn of enameled coil of the annular inductor and is led out through the metal slip ring, the purpose of changing the effective turn number of the enameled coil, namely changing the inductance value, is realized, and the function of adjusting the inductance value can be easily realized on the premise of not disassembling any part of the inductor assembly; operation is easy and convenient, the application cost is reduced, the adjustment number of inductance values is large, and the requirement for adjustment of a large number of inductance values can be met.

Description

Technical Field

[0001] The utility model relates to a toroidal inductor component, in particular to a toroidal inductor component which is convenient for adjusting the inductance value. Background Art

[0002] The toroidal inductor is mainly composed of a circular magnetic core and an enameled coil wound on the magnetic core. It can be used in circuits such as filter circuits. Due to the large volume and mass of the toroidal inductor, specific mounting components are generally provided in the application. These mounting components are assembled together with the toroidal inductor to form a toroidal inductor assembly, which is installed as a whole in the electronic device.

[0003] Traditional toroidal inductor components generally have only two terminals and the inductance value cannot be adjusted. However, in actual applications, there are often situations where the inductance value needs to be adjusted. For example, some inductor and capacitor filter circuits require a tuning function. In this case, the inductance value and the capacitance value need to be adjusted. This traditional toroidal inductor component cannot achieve this function and can only be achieved by replacing different toroidal inductor components. Not only is the operation time-consuming and labor-intensive, but it also requires the configuration of multiple toroidal inductor components, increasing the application cost.

[0004] In order to solve the above problems, some traditional toroidal inductor components use multiple terminals, which are led out from different positions of the enameled coil. In actual applications, different terminals can be selected according to needs to achieve the purpose of changing the inductance value. This structure solves the problem of the inductance value being non-adjustable to a certain extent, but there are still problems such as the fixed adjustment value and the small number, which makes it difficult to meet the needs of adjusting multiple inductance values. In addition, rewiring is required for adjustment, and the operation is cumbersome, resulting in inconvenience in application. Utility Model Content

[0005] The purpose of the utility model is to provide a toroidal inductor component which is easy to adjust the inductance value in order to solve the above problem.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A toroidal inductor component for adjusting inductance value conveniently comprises a toroidal inductor, wherein the toroidal inductor comprises a circular magnetic core and an enameled coil wound on the magnetic core, and the toroidal inductor component for adjusting inductance value conveniently comprises an insulating base, a metal slip ring and a movable metal rod, wherein the toroidal inductor and the circular metal slip ring are respectively mounted on the insulating base, the center line of the metal slip ring and the center line of the toroidal inductor coincide with each other and the metal slip ring is located outside the toroidal inductor, the width of one end of the movable metal rod is increased to form a "T"-shaped end, the "T"-shaped end is located between the metal slip ring and the toroidal inductor, the two sides of the "T"-shaped end are respectively in contact with the inner wall of the metal slip ring and the corresponding enameled coil on the toroidal inductor and can slide circumferentially, the insulating paint on the multi-turn enameled coil on the toroidal inductor corresponding to the "T"-shaped end is removed and can be in conductive contact with the "T"-shaped end, and one end of the enameled coil of the toroidal inductor and the metal slip ring respectively serve as two connection terminals of the toroidal inductor component for adjusting inductance value conveniently.

[0008] Preferably, in order to better limit the annular inductor, the metal slip ring and the movable metal rod so as to better realize the function of adjusting the inductance value by circular sliding and facilitate processing and assembly, the annular inductor component for adjusting the inductance value also includes an insulating ring, an insulating cover and a locking bolt. The insulating base is provided with a circular base inner cavity with an open upper end, and a lower circular boss protruding upward is provided in the middle of the base inner cavity. The lower circular boss is provided with a vertical center through hole. The annular inductor is placed in the base inner cavity and the lower circular boss is placed in the lower part of the center through hole of the annular inductor. The middle and upper cavity walls of the base inner cavity are thinned from the inside to the outside to form an annular groove of the base. The "T"-shaped ends of the lower parts of the vertical metal slip ring and the vertical movable metal rod with a center line are both placed in the lower part of the annular groove of the base. The annular insulating ring is placed in the annular groove of the base and is located above one side of the metal slip ring and the "T"-shaped end. The middle part of the cylindrical insulating cover with an open lower end is provided with an upper circular boss protruding downward, and the upper circular boss is provided with a vertical central through hole. The upper circular boss is placed in the upper part of the central through hole of the annular inductor. The circumferential wall of the insulating cover is placed between the annular inductor and the metal slip ring and is located above the other side of the "T"-shaped end. The upper and middle part of the movable metal rod is located between the insulating cover and the metal slip ring. The upper end of the movable metal rod is higher than the upper end of the insulating base and the upper end of the metal slip ring. The screw of the locking bolt passes through the central through hole of the upper circular boss and the central through hole of the lower circular boss from top to bottom and is connected to the locking nut.

[0009] Preferably, in order to make the circular sliding operation of the movable metal rod smoother, a concave circular groove is provided in the middle of the lower surface of the "T"-shaped end and a ball is provided in the circular groove, and a circular limiting groove is provided on the bottom of the annular groove of the base at a position corresponding to the ball, and the lower part of the ball is placed in the limiting groove.

[0010] Preferably, in order to facilitate processing, assembly and limit the circular sliding of the movable metal rod, a base blocking portion protruding toward the center line direction of the base annular groove is provided on the groove wall of the base, the metal slip ring is an open ring and its two open ends are respectively located on both sides of the base blocking portion and contact each other, the insulating ring is an open ring and its two open ends are respectively located on both sides of the base blocking portion and contact each other, and the end of the base blocking portion close to the center line of the base annular groove can block the movement of the "T" shaped end.

[0011] Preferably, in order to facilitate reliable electrical connection of the annular inductor assembly with other components such as a circuit board, a first lead through-hole penetrating downward is provided in the bottom of the annular groove of the base near the base blocking portion and the metal slip ring, a first bare metal lead post extending downward is provided at the lower portion of one end of the metal slip ring corresponding to the first lead through-hole, an end of the first bare metal lead post passes through the first lead through-hole and is located below the insulating base, a second lead through-hole penetrating downward is provided at the bottom of the inner cavity of the base corresponding to one end of the enameled coil of the annular inductor and near the base blocking portion, a second bare metal lead post extending downward is provided at the corresponding end of the enameled coil of the annular inductor, an end of the second bare metal lead post passes through the second lead through-hole and is located below the insulating base.

[0012] Preferably, in order to embed the nut and locking nut of the locking bolt for ease of application, the upper end of the upper circular boss is provided with a downwardly recessed nut groove and the nut of the locking bolt is placed in the nut groove, and a spring washer and a flat washer mounted on the screw rod of the locking bolt are sequentially provided between the nut of the locking bolt and the bottom of the nut groove, and the lower end of the lower circular boss is provided with an upwardly recessed nut groove and the locking nut is placed in the nut groove.

[0013] Preferably, in order to facilitate processing and assembly, the circumferential outer wall of the insulating ring is provided with a plurality of connecting screw holes evenly distributed along the circumference, and the groove wall of the annular groove of the base is provided with a plurality of connecting through holes evenly distributed along the circumference, and a plurality of connecting screws are respectively passed through the plurality of connecting through holes and connected to the plurality of connecting screw holes.

[0014] Preferably, in order to reliably install the annular inductor assembly in the housing of other components such as a filter, the bottom of the insulating base is provided with a plurality of mounting ears protruding toward the circumference and distributed along the circumference, and the mounting ears are provided with vertical mounting through holes.

[0015] The beneficial effects of the utility model are:

[0016] The utility model designs an annular inductor component which is mainly composed of an insulating base, an insulating ring, an insulating cover, a locking bolt, an annular inductor, a metal slip ring and a movable metal rod, and utilizes a structure in which the movable metal rod is in conductive contact with one turn of the enameled coil of the annular inductor and is led out through the metal slip ring, so that the purpose of changing the effective number of turns of the enameled coil, that is, changing the inductance value, can be achieved by operating the movable metal rod to rotate around the annular inductor, and all components are stably and reliably integrated on the insulating base, and the function of inductance value adjustment can be easily achieved without disassembling any component of the inductor component, the operation is simple and convenient, only one annular inductor component is needed to meet the application requirements, the application cost is reduced, and the number of inductance value adjustments is large, which can meet the requirements of multiple inductance value adjustments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional exploded view of the toroidal inductor component of the utility model that is easy to adjust the inductance value before assembly;

[0018] Figure 2 It is a top view of the insulating base of the toroidal inductor component for facilitating adjustment of inductance value according to the present invention;

[0019] Figure 3 yes Figure 2 AA section view in;

[0020] Figure 4 is a cross-sectional view of the assembled toroidal inductor assembly for adjusting the inductance value according to the present invention, and the viewing angle in the figure is Figure 3 same;

[0021] Figure 5 It is a three-dimensional diagram of a metal slip ring of a toroidal inductor assembly for facilitating adjustment of inductance value according to the present invention. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] like Figure 1-Figure 5As shown, the annular inductor assembly for adjusting the inductance value of the utility model comprises an annular inductor, an insulating base 21, a metal slip ring 11 and a movable metal rod 1, wherein the annular inductor comprises an annular magnetic core 8 and an enameled coil 7 wound on the magnetic core 8, the annular inductor and the annular metal slip ring 11 are respectively mounted on the insulating base 21, the center line of the metal slip ring 11 and the center line of the annular inductor (i.e., the center line of the magnetic core 8) coincide with each other and the metal slip ring 11 is located outside the annular inductor, and the width of one end of the movable metal rod 1 is increased to form a " The "T"-shaped end 27 is located between the metal slip ring 11 and the annular inductor. Both sides of the "T"-shaped end 27 are respectively in contact with the inner wall of the metal slip ring 11 and the corresponding enameled coil 7 on the annular inductor and can slide circumferentially. The insulating paint on the multi-turn enameled coil 7 on the annular inductor corresponding to the "T"-shaped end 27 is removed and can be in conductive contact with the "T"-shaped end 27. One end of the enameled coil 7 of the annular inductor and the metal slip ring 11 respectively serve as two terminal ends of the annular inductor component for adjusting the inductance value.

[0024] like Figure 1-Figure 5 As shown, the utility model also discloses the following more optimized specific structures:

[0025] In order to better limit the annular inductor, the metal slip ring 11 and the movable metal rod 1 so as to better realize the function of adjusting the inductance value by circular sliding and facilitate processing and assembly, the annular inductor component for adjusting the inductance value also includes an insulating ring 9, an insulating cover 5 and a locking bolt 2, the insulating base 21 is provided with a circular base inner cavity 19 with an upper end open, the middle part of the base inner cavity 19 is provided with an upwardly protruding lower circular boss 18, the lower circular boss 18 is provided with a vertical center through hole 17, the annular inductor is placed in the base inner cavity 19 and the lower circular boss 18 is placed in the lower part of the center through hole of the annular inductor, the middle and upper cavity wall of the base inner cavity 19 is thinned from the inside to the outside to form a base annular groove 15, the center line of the vertical metal slip ring 11 and the "T"-shaped end 27 at the lower part of the vertical movable metal rod 1 are both placed in the base annular groove 15 At the lower part, the annular insulating ring 9 is placed in the annular groove 15 of the base and is located above one side of the metal slip ring 11 and the "T"-shaped end 27. The middle part of the cylindrical insulating cover 5 with an open lower end is provided with an upper circular boss 6 protruding downward. The upper circular boss 6 is provided with a vertical central through hole (not marked in the figure). The upper circular boss 6 is placed in the upper part of the central through hole of the annular inductor. The circumferential wall of the insulating cover 5 is placed between the annular inductor and the metal slip ring 11 and is located above the other side of the "T"-shaped end 27. The middle and upper part of the movable metal rod 1 is located between the insulating cover 5 and the metal slip ring 11. The upper end of the movable metal rod 1 is higher than the upper end of the insulating base 21 and the upper end of the metal slip ring 11. The screw of the locking bolt 2 passes through the central through hole of the upper circular boss 6 and the central through hole 17 of the lower circular boss 18 from top to bottom and is connected to the locking nut 23.

[0026] In order to make the circular sliding operation of the movable metal rod 1 smoother, an inwardly concave circular groove is provided in the middle of the lower surface of the "T"-shaped end 27, and a ball 28 is provided in the circular groove. A circular limiting groove 16 is provided on the bottom of the annular groove 15 of the base at a position corresponding to the ball 28, and the lower part of the ball 28 is placed in the limiting groove 16.

[0027] In order to facilitate processing, assembly and limit the circular sliding of the movable metal rod 1, a base blocking portion 14 protruding toward the center line direction is provided on the groove wall of the base annular groove 15, the metal slip ring 11 is an open ring and its two open ends are respectively located on both sides of the base blocking portion 14 and contact each other, the insulating ring 9 is an open ring and its two open ends are respectively located on both sides of the base blocking portion 14 and contact each other, and the end of the base blocking portion 14 close to the center line of the base annular groove 15 can block the movement of the "T"-shaped end 27.

[0028] In order to facilitate reliable electrical connection of the toroidal inductor assembly with other components such as a circuit board, a first lead through hole 24 is provided downwardly in the bottom of the annular groove 15 of the base near the base blocking portion 14 and the metal slip ring 11, and a first bare metal lead column 12 extending downwardly is provided at the lower part of one end of the metal slip ring 11 corresponding to the first lead through hole 24. The end of the first bare metal lead column 12 passes through the first lead through hole 24 and is located below the insulating base 21. A second lead through hole 25 is provided downwardly at the bottom of the base inner cavity 19 corresponding to one end of the enameled coil 7 of the toroidal inductor and near the base blocking portion 14. A second bare metal lead column 13 extending downwardly is provided at the corresponding end of the enameled coil 7 of the toroidal inductor, and the end of the second bare metal lead column 13 passes through the second lead through hole 25 and is located below the insulating base 21.

[0029] In order to embed the nut and locking nut 23 of the locking bolt 2 for ease of use, the upper end of the upper circular boss 6 is provided with a downwardly recessed nut groove (not marked in the figure) and the nut of the locking bolt 2 is placed in the nut groove, and a spring washer 3 and a flat washer 4 mounted on the screw rod of the locking bolt 2 are provided in sequence between the nut of the locking bolt 2 and the bottom of the nut groove, and the lower end of the lower circular boss 18 is provided with an upwardly recessed nut groove 26 and the locking nut 23 is placed in the nut groove 26.

[0030] To facilitate processing and assembly, the circumferential outer wall of the insulating ring 9 is provided with a plurality of connecting screw holes 10 evenly distributed along the circumference, and the groove wall of the base annular groove 15 is provided with a plurality of connecting through holes evenly distributed along the circumference (not marked in the figure), and a plurality of connecting screws 20 are respectively passed through the plurality of connecting through holes and connected to the plurality of connecting screw holes 10.

[0031] In order to reliably install the toroidal inductor assembly in other components such as the housing of the filter, the bottom of the insulating base 21 is provided with a plurality of mounting ears 22 protruding toward the circumference and distributed along the circumference, and the mounting ears 22 are provided with vertical mounting through holes.

[0032] like Figure 1-Figure 5 As shown, when used, the annular inductor assembly of the utility model that is easy to adjust the inductance value is installed on the circuit board of other components such as filters through the mounting ear 22, and the lower end of the first bare metal lead column 12 and the lower end of the second bare metal lead column 13 are respectively connected to the circuit board. According to the actual application situation, the inductance value of the annular inductor assembly of the utility model that is easy to adjust the inductance value is determined, and the active metal rod 1 is driven by the upper part of the hand to slide in the circular ring space between the metal slip ring 11 and the annular inductor to change the effective number of turns of the enameled coil 7 on the magnetic core 8 in the annular inductor, thereby achieving the purpose of changing the inductance value of the annular inductor to meet the application needs. When the inductance value needs to be changed next time, repeat the above process to achieve the corresponding inductance value adjustment function, and the adjustment process can be completed without disassembling any components and connection ends, which is very convenient.

[0033] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.

Claims

1. A toroidal inductor assembly for adjusting inductance value, comprising a toroidal inductor, wherein the toroidal inductor comprises a toroidal magnetic core and an enameled coil wound on the magnetic core, characterized in that: The annular inductor component for adjusting the inductance value also includes an insulating base, a metal slip ring and a movable metal rod. The annular inductor and the annular metal slip ring are respectively mounted on the insulating base. The center line of the metal slip ring and the center line of the annular inductor coincide with each other and the metal slip ring is located outside the annular inductor. The width of one end of the movable metal rod is increased to form a "T"-shaped end. The "T"-shaped end is located between the metal slip ring and the annular inductor. Both sides of the "T"-shaped end are respectively in contact with the inner wall of the metal slip ring and the corresponding enameled coil on the annular inductor and can slide circumferentially. The insulating paint on the multi-turn enameled coil on the annular inductor corresponding to the "T"-shaped end is removed and can be in conductive contact with the "T"-shaped end. One end of the enameled coil of the annular inductor and the metal slip ring are respectively used as two connection terminals of the annular inductor component for adjusting the inductance value.

2. The toroidal inductor component for adjusting inductance according to claim 1, characterized in that: The annular inductor assembly for adjusting the inductance value also includes an insulating ring, an insulating cover and a locking bolt. The insulating base is provided with a circular base cavity with an upper end open, and a lower circular boss protruding upward is provided in the middle of the base cavity. The lower circular boss is provided with a vertical center through hole. The annular inductor is placed in the base cavity and the lower circular boss is placed in the lower part of the center through hole of the annular inductor. The middle and upper cavity walls of the base cavity are thinned from the inside to the outside to form a base annular groove. The metal slip ring with a vertical center line and the "T"-shaped end of the lower part of the vertical movable metal rod are both placed in the lower part of the base annular groove. The annular insulating ring is placed in the base annular groove and is located between the metal slip ring and the Above one side of the "T"-shaped end, the middle part of the cylindrical insulating cover with an open lower end is provided with an upper circular boss protruding downward, the upper circular boss is provided with a vertical central through hole, the upper circular boss is placed in the upper part of the central through hole of the annular inductor, the circumferential wall of the insulating cover is placed between the annular inductor and the metal slip ring and is located above the other side of the "T"-shaped end, the middle and upper part of the movable metal rod is located between the insulating cover and the metal slip ring, the upper end of the movable metal rod is higher than the upper end of the insulating base and the upper end of the metal slip ring, the screw of the locking bolt passes through the central through hole of the upper circular boss and the central through hole of the lower circular boss from top to bottom and is connected to the locking nut.

3. The toroidal inductor component with easy-to-adjust inductance value according to claim 2, characterized in that: A concave circular groove is provided in the middle of the lower surface of the "T"-shaped end, and a ball is provided in the circular groove. A circular limiting groove is provided on the bottom of the annular groove of the base at a position corresponding to the ball, and the lower part of the ball is placed in the limiting groove.

4. The toroidal inductor component with easy-to-adjust inductance value according to claim 2 or 3, characterized in that: A base blocking portion protruding toward the center line of the base annular groove is provided on the groove wall of the base, the metal slip ring is an open ring and its two open ends are respectively located on both sides of the base blocking portion and contact each other, the insulating ring is an open ring and its two open ends are respectively located on both sides of the base blocking portion and contact each other, and one end of the base blocking portion close to the center line of the base annular groove can block the movement of the "T"-shaped end.

5. The toroidal inductor component with easy-to-adjust inductance value according to claim 4, characterized in that: A first lead through hole extending downward is provided in the bottom of the annular groove of the base near the base blocking portion and the metal slip ring, a first bare metal lead column extending downward is provided at the lower part of one end of the metal slip ring corresponding to the first lead through hole, an end of the first bare metal lead column passes through the first lead through hole and is located below the insulating base, a second lead through hole extending downward is provided at the bottom of the inner cavity of the base corresponding to one end of the enameled coil of the toroidal inductor and near the base blocking portion, a second bare metal lead column extending downward is provided at the corresponding end of the enameled coil of the toroidal inductor, an end of the second bare metal lead column passes through the second lead through hole and is located below the insulating base.

6. The toroidal inductor component with easy-to-adjust inductance value according to claim 2 or 3, characterized in that: The upper end of the upper circular boss is provided with a downwardly recessed nut groove and the nut of the locking bolt is placed in the nut groove, and a spring washer and a flat washer mounted on the screw rod of the locking bolt are sequentially provided between the nut of the locking bolt and the bottom of the nut groove, and the lower end of the lower circular boss is provided with an upwardly recessed nut groove and the locking nut is placed in the nut groove.

7. The toroidal inductor component with easy-to-adjust inductance value according to claim 2 or 3, characterized in that: The circumferential outer wall of the insulating ring is provided with a plurality of connecting screw holes evenly distributed along the circumference, and the groove wall of the annular groove of the base is provided with a plurality of connecting through holes evenly distributed along the circumference, and a plurality of connecting screws are respectively passed through the plurality of connecting through holes and connected with the plurality of connecting screw holes.

8. The toroidal inductor component with easy-to-adjust inductance value according to claim 1, 2 or 3, characterized in that: The bottom of the insulating base is provided with a plurality of mounting ears which protrude toward the circumferential direction and are distributed along the circumferential direction, and the mounting ears are provided with vertical mounting through holes.

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