Low-coil-number annular inductor assembly reliable in insulation and convenient to install

Abstract

The low-coil-number annular inductor assembly reliable in insulation and convenient to install comprises an annular magnetic core, two sets of coils and two insulation press-fitting bases, a first through groove and a second through groove are formed in the surface of one side of each press-fitting base, the two ends of each first through groove are communicated, and the penetrating direction of the first through groove is perpendicular to the penetrating direction of the second through groove. The middle of the first through groove and the middle of the second through groove intersect with each other, the depth of the first through groove is larger than that of the second through groove, the two press-fitting bases are in butt joint with each other, the two sides of the annular wall, where no coil is wound, in the annular magnetic core make close contact with the groove bottom of the corresponding second through groove, and the two sets of coils are arranged in the corresponding first through grooves respectively. Lead through holes are formed in the middle of the groove bottom of the first through groove, and leads at the two ends of the two sets of coils penetrate through the corresponding lead through holes respectively. According to the utility model, the purposes of reliably and mechanically positioning the annular inductor and protecting the coil are realized at the same time, and the press-fitting seat only needs to be mounted on other parts during mounting, so that the press-fitting seat is very convenient to mount.

Description

TECHNICAL FIELD

[0001] The utility model relates to a toroidal inductor assembly, especially to a low coil number toroidal inductor assembly which is reliable in insulation and convenient to install. BACKGROUND

[0002] The toroidal inductor is widely used in filter products, and its basic structure comprises a toroidal core and two groups of coils wound on the toroidal core. Generally, the number of coils is directly proportional to the inductance of the toroidal inductor.

[0003] The conventional installation methods of the toroidal inductor mainly include the following:

[0004] First, the toroidal core and the coils are integrally encapsulated in the shell by epoxy glue, and the toroidal core and the coils are completely fixed at one time. This method has the disadvantages of overweight and difficulty in disassembly and assembly. In actual application, the inductor often needs to be repaired and debugged, so this complete encapsulation method is not practical.

[0005] Second, the pressure plate is pressed by screws, the pressure plate indirectly presses the toroidal core through the coils, and the screw is connected with the nut after passing through the center through hole of the pressure plate, the center through hole of the toroidal core and the corresponding through hole on the printed board in sequence. This method is convenient to disassemble and assemble, but the pressure plate does not press the toroidal core, the inductance is easy to loosen in vibration test, and the pressure plate may damage the insulating paint on the surface of the coil after pressing the coil tightly, so this installation method is only suitable for the toroidal inductor with small vibration and small size.

[0006] Third, the above two installation methods are combined, that is, the pressure plate is pressed and assembled, and part of the glue is encapsulated, which is commonly used for fixing and installing large inductors. This method has the advantages of the above two methods, but also has the disadvantages of the above two methods.

[0007] In the application field with small inductance requirement, the number of coils of the toroidal inductor is small, generally only occupies one half of the toroidal core or even less. The above-mentioned second conventional installation method has more serious defects, that is, the effect of pressing the coils with small number of turns is worse, and the insulating paint of the coil is more easily damaged, so it is more unsuitable to use the above-mentioned conventional method for installation. CONTENT OF THE UTILITY MODEL

[0008] The utility model aims at solving the above-mentioned problems and provides a low coil number toroidal inductor assembly which is reliable in insulation and convenient to install.

[0009] The utility model realizes the above-mentioned purpose through the following technical scheme:

[0010] The application relates to an insulated and easy-to-mount low-coil-number annular inductor assembly which comprises an annular magnetic core and two groups of coils wound on the annular magnetic core, the two groups of coils are arranged on opposite two side walls of the annular magnetic core and occupy no more than one-third of the annular interval of one turn respectively, the insulated and easy-to-mount low-coil-number annular inductor assembly further comprises two insulated press-fit bases, one side surface of the press-fit bases is provided with a first through groove and a second through groove which are through at two ends, the through direction of the first through groove is perpendicular to the through direction of the second through groove, the middle part of the first through groove and the middle part of the second through groove are crossed, and the depth of the first through groove is greater than the depth of the second through groove, the two press-fit bases are butted against each other, the two sides of the annular wall of the annular magnetic core without the coils are in close contact with the groove bottoms of the corresponding second through grooves respectively, the two groups of coils are arranged in the corresponding first through grooves respectively, the groove bottoms of the first through grooves are provided with lead-through holes, and the leads at two ends of the two groups of coils pass through the corresponding lead-through holes respectively.

[0011] As preferred, in order to facilitate reliable connection of the two press-fit bases, four convex columns are formed on the rectangular press-fit bases by the first through groove and the second through groove, the four convex columns of the two press-fit bases are butted against each other and are connected through four connecting screws.

[0012] As preferred, in order to facilitate processing and assembly, the four connecting screws pass through the through holes corresponding to the four convex columns on the two press-fit bases respectively and are connected with four nuts, the screw nuts of the four connecting screws and the four nuts are arranged in corresponding counter-sunk holes respectively.

[0013] As preferred, in order to realize the quick and accurate positioning function between the two press-fit bases, the middle part of the suspended end of two convex columns on one press-fit base is provided with an outward convex positioning column, and the through hole on the convex column penetrates the positioning column, the middle part of the suspended end of two convex columns on the other press-fit base is provided with an inward recessed positioning hole, and the through hole on the convex column penetrates the hole bottom of the positioning hole, and the positioning column is arranged in the corresponding positioning hole.

[0014] As preferred, in order to better bind and fix the coil leads to avoid loosening when vibrating, outward convex blocks are arranged on the press-fit base close to two convex columns respectively, and the blocks are provided with a cable tie through hole for the cable tie to pass through.

[0015] As preferred, in order to facilitate mounting of the inductor assembly on a printed board, the other side surface of the press-fit base opposite to the first through groove is provided with an outward convex mounting boss, the mounting boss is provided with a mounting through hole, and a mounting screw passes through the corresponding mounting through hole.

[0016] The inductor assembly has the advantages that:

[0017] The utility model discloses a first through groove and a second through groove which are perpendicular to each other are arranged on two structure same pressure equipment seats, the first through groove is used to accommodate the coil, the two sides of the annular magnetic core are pressed and held by the groove bottom of the second through groove, thereby realizing the function of pressure equipment of the annular magnetic core, avoiding the installation stability shortage and the disadvantage of possible damage to the coil insulating paint caused by the coil compression, realizing reliable mechanical positioning of the annular inductor and the purpose of protecting the coil, and when installing, only need to install the pressure equipment seat on other components, which is very convenient. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the three-dimensional explosion diagram of the low coil number annular inductor assembly before the assembly of the utility model discloses an insulation reliable and convenient installation.

[0019] Figure 2 It is the three-dimensional view of the low coil number annular inductor assembly after the assembly of the utility model discloses an insulation reliable and convenient installation. DETAILED DESCRIPTION

[0020] The utility model will be further described in connection with the drawings:

[0021] As Figure 1 And Figure 2 The utility model discloses an insulation reliable and convenient installation's low coil number annular inductor assembly includes annular magnetic core 11, two groups of coils 12 and two insulation's pressure equipment seat 4 that are wound on annular magnetic core 11, two groups of coils 12 are located on the opposite two sides ring wall of annular magnetic core 11 respectively and respectively occupy not more than one circle's one third (generally about one fourth) annular interval, and one side surface of pressure equipment seat 4 is equipped with two ends through first through groove 3 and second through groove 5, the through direction of first through groove 3 and the through direction of second through groove 5 are perpendicular to each other, the middle part of first through groove 3 and the middle part of second through groove 5 are perpendicular to each other and the depth of first through groove 3 is greater than the depth of second through groove 5, two pressure equipment seats 4 are mutually butted, and the ring wall of annular magnetic core 11 without winding coil 12 is respectively in close contact with the groove bottom of corresponding second through groove 5, two groups of coils 12 are respectively placed in corresponding first through groove 3, the groove bottom middle part of first through groove 3 is equipped with lead hole 13, and the lead 10 of two groups of coils 12 two ends respectively passes through corresponding lead hole 13.

[0022] As Figure 1 And Figure 2 The utility model discloses an insulation reliable and convenient installation's low coil number annular inductor assembly includes annular magnetic core 11, two groups of coils 12 and two insulation's pressure equipment seat 4 that are wound on annular magnetic core 11, two groups of coils 12 are located on the opposite two sides ring wall of annular magnetic core 11 respectively and respectively occupy not more than one circle's one third (generally about one fourth) annular interval, and one side surface of pressure equipment seat 4 is equipped with two ends through first through groove 3 and second through groove 5, the through direction of first through groove 3 and the through direction of second through groove 5 are perpendicular to each other, the middle part of first through groove 3 and the middle part of second through groove 5 are perpendicular to each other and the depth of first through groove 3 is greater than the depth of second through groove 5, two pressure equipment seats 4 are mutually butted, and the ring wall of annular magnetic core 11 without winding coil 12 is respectively in close contact with the groove bottom of corresponding second through groove 5, two groups of coils 12 are respectively placed in corresponding first through groove 3, the groove bottom middle part of first through groove 3 is equipped with lead hole 13, and the lead 10 of two groups of coils 12 two ends respectively passes through corresponding lead hole 13.

[0023] In order to facilitate reliable connection of two press-fitting seats 4, four protruding columns 9 are formed on the oblong press-fitting seat 4 by the first through slot 3 and the second through slot 5, and the four protruding columns 9 of the two press-fitting seats 4 are mutually butted and connected by four connecting screws 1.

[0024] In order to facilitate processing and assembly, the four connecting screws 1 pass through the through holes corresponding to the four protruding columns 9 on the two press-fitting seats 4 and are connected with the four nuts 16, and the screw caps of the four connecting screws 1 and the four nuts 16 are respectively arranged in the corresponding countersunk holes.

[0025] In order to realize the quick and accurate positioning function between the two press-fitting seats 4, the middle part of the suspended end of two protruding columns 9 on one press-fitting seat 4 is provided with an outward protruding positioning column 7, and the through hole on the protruding column 9 penetrates the positioning column 7, and the middle part of the suspended end of two protruding columns 9 on the other press-fitting seat 4 is provided with an inward recessed positioning hole 8, and the through hole on the protruding column 9 penetrates the bottom of the positioning hole 8, and the positioning column 7 is arranged in the corresponding positioning hole 8.

[0026] In order to facilitate better binding and fixing of the lead 10 of the coil 12 to avoid loosening when vibrating, the position close to the two protruding columns 9 on the press-fitting seat 4 is respectively provided with an outward protruding protrusion 6, and the protrusion 6 is provided with a binding hole (not marked in the figure) for the binding tape to pass through.

[0027] In order to facilitate the installation of the inductor assembly on the printed board (not shown in the figure), the surface opposite to the first through slot 3 on the press-fitting seat 4 is provided with an outward protruding mounting boss 14, the mounting boss 14 is provided with a mounting through hole 15, and the mounting screw 2 passes through the corresponding mounting through hole 15.

[0028] As shown in Figure 1 and Figure 2 , during assembly, the leads 10 of the two groups of coils 12 pass through the lead through holes 13 of the two press-fitting seats 4 respectively, the two press-fitting seats 4 are close to each other, until the two sides of the annular wall of the annular magnetic core 11 without winding the coil 12 are in close contact with the groove bottoms of the second through slots 5 of the two press-fitting seats 4, at this time all the positioning columns 7 are arranged in the corresponding positioning holes 8, the two groups of coils 12 are arranged in the corresponding first through slots 3, and then the four connecting screws 1 pass through the through holes corresponding to the four protruding columns 9 on the two press-fitting seats 4 and are connected with the four nuts 16, finally the lead 10 is bound and fixed by passing through the binding hole on the protrusion 6, that is, the assembly of the inductor assembly is completed; then the four mounting screws 2 pass through the corresponding mounting through holes 15 and are connected with the screw holes on the printed board, that is, the inductor assembly is installed on the printed board. During use, the two ends of the two groups of coils 12 are connected with the input end and the output end respectively, so that the related functions such as filtering can be realized.

[0029] The above embodiments are only preferred embodiments of the present application, and are not a limitation on the technical solutions of the present application. Any technical solutions that can be realized on the basis of the above embodiments without creative labor should be considered to fall within the scope of protection of the present application.

Claims

1. A low number of turns toroidal inductor assembly which is reliable in insulation and easy to install, comprising a toroidal core and two sets of coils wound on said toroidal core, the two sets of said coils being located on opposite side walls of said toroidal core and occupying each no more than one third of the toroidal interval, characterized in that: The reliable and easy-to-install low-coil-number toroidal inductor assembly further comprises two insulated press-fit seats, one side surface of the press-fit seat is provided with a first through slot and a second through slot, the through direction of the first through slot is perpendicular to the through direction of the second through slot, the middle part of the first through slot intersects with the middle part of the second through slot, and the depth of the first through slot is greater than the depth of the second through slot, the two press-fit seats are butted against each other, the two sides of the ring wall of the toroidal magnetic core without winding the coil are in close contact with the bottom of the corresponding second through slot, and two groups of coils are arranged in the corresponding first through slot.

2. The reliably insulated and easy to install low number of turns toroidal inductor assembly of claim 1, wherein: Four convex columns are formed on the rectangular press-fit seat by the first through slot and the second through slot, the four convex columns of the two press-fit seats are butted against each other and connected by four connecting screws.

3. The reliably insulated and easy to install low number of turns toroidal inductor assembly of claim 2, wherein: The four connecting screws pass through the through holes corresponding to the four convex columns on the two press-fit seats and are connected with four nuts, the nuts of the four connecting screws and the four nuts are arranged in the corresponding countersunk holes.

4. The reliably insulated and easy to install low number of turns toroidal inductor assembly of claim 3, wherein: The middle part of the overhanging end of two convex columns on one press-fit seat is provided with an outward convex positioning column, and the through hole on the convex column penetrates the positioning column, the middle part of the overhanging end of two convex columns on the other press-fit seat is provided with an inward recessed positioning hole, and the through hole on the convex column penetrates the bottom of the positioning hole, and the positioning column is arranged in the corresponding positioning hole.

5. The reliably isolated and easily installed low-part-count toroidal inductor assembly of any of claims 2-4, wherein: The position close to the two convex columns on the press-fit seat is provided with an outward convex block, and the block is provided with a cable through hole for the cable to pass through.

6. The reliably isolated and easily installed low-part-count toroidal inductor assembly of any one of claims 1-4, wherein: The other side surface of the press-fit seat opposite to the first through slot is provided with an outward convex mounting boss, the mounting boss is provided with a mounting through hole, and a mounting screw passes through the corresponding mounting through hole.

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