Double-coil coupling inductor

Abstract

The double-coil coupling inductor comprises a shell, a supporting column is fixedly connected to the middle of the inner bottom wall of the shell, the bottom of the outer surface of the supporting column is sleeved with a first spring, and one end of the first spring is fixedly connected with a supporting plate. According to the double-coil coupling inductor, the shell, the supporting columns, the first springs, the nuts and the protective sponge are arranged, the supporting plate supports the inductor body through the first springs, the inductor body is limited through the nuts, the structure is more convenient to mount and dismount, the inductor body is preliminarily protected through the shell, and the inductor body is prevented from being damaged. Meanwhile, the influence of the external environment on the inductor body is reduced, a first spring enables the inductor body to be kept in a suspended state through a supporting plate, the phenomenon that the inductor body is damaged due to the fact that the shell makes contact with the outside is prevented, a protective sponge protects the top of the inductor body through a second spring, hard contact is avoided, and the service life of the inductor body is prolonged. The inductor has a good buffer protection function, and the service life of the inductor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of inductors, and particularly relates to a double-coil coupled inductor. Background Art

[0002] An inductor is a component that can convert electrical energy into magnetic energy and store it. The structure of an inductor is similar to that of a transformer. An inductor has a certain inductance, and it only impedes the change of current. If the inductor is in a state without current passing through, when the circuit is turned on, it will try to impede the current from flowing through it; if the inductor is in a state with current passing through, when the circuit is turned off, it will try to maintain the current unchanged. Inductors are also called chokes, reactors, and dynamic reactors.

[0003] After retrieval, Chinese Patent Publication (Announcement) No. CN216119793U discloses a surface-mounted rectangular package structure double-coil molded inductor, which includes a series-connected double winding, a magnetic core plate, a columnar magnetic core, a housing, and metal lead-out terminals. Two columnar magnetic cores are used and symmetrically fixedly connected to the upper part of the magnetic core plate. The double winding is respectively wound around the two columnar magnetic cores to form a magnetic core winding. The two free ends of the double winding are respectively connected to the two metal lead-out terminals, and the two metal lead-out terminals are fixedly connected to the bottom of the magnetic core plate. The housing covers the magnetic core winding and is plastic-sealed, and the magnetic core plate faces the open end of the bottom of the housing. The utility model adopts a series-connected double-coil mode to replace the traditional single-coil mode. Compared with the traditional single-coil mode, the series-connected double-coil mode doubles the number of turns and triples the inductance.

[0004] Although the inductance of the inductor of the above patent has been improved, during the transportation or use of the inductor, when the inductor falls to the ground or directly touches an external object, the magnetic ring and the coil, as the main components of the inductor, are very easy to be damaged due to impact, thus affecting the normal use of the inductor. Therefore, it is necessary to design a double-coil coupled inductor to solve the above problems. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a double-coil coupled inductor, which can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A double - coil coupled inductor, comprising a housing. In the middle of the inner bottom wall of the housing, there is a pillar fixedly connected. At the bottom of the outer surface of the pillar, a first spring is sleeved. One end of the first spring is fixedly connected with a support plate, and the support plate is slidably connected with the pillar; in the middle of the outer surface of the pillar, an inductor body is clamped. At the top of the outer surface of the pillar, a nut is threadedly connected. At the top of the inner side surface of the housing, a top cover is threadedly connected. On one side of the inner top wall of the top cover, a second spring is fixedly connected, and one end of the second spring is fixedly connected with a protective sponge.

[0008] In order to achieve the effect of strengthening the structural strength of the top cover, as a double - coil coupled inductor of the present utility model, in the middle of the inner top wall of the top cover, there is a fixed ring fixedly connected, and on the outer surface of the fixed ring, a first reinforcing rib is fixedly connected.

[0009] In order to achieve the effect of preventing the magnetic ring from rotating, as a double - coil coupled inductor of the present utility model, the inductor body includes a connecting ring slidably connected to the outer surface of the pillar. On the inner side surface of the connecting ring, a clamping groove is opened, and on the outer surface of the pillar, close to one side of the connecting ring, a clamping block is fixedly connected.

[0010] In order to achieve the effect of strengthening the structural strength of the connecting ring, as a double - coil coupled inductor of the present utility model, on both sides of the outer surface of the connecting ring, connecting plates are fixedly connected. One end of the connecting plate is fixedly connected with a magnetic ring, and in the middle of the outer surface of the connecting plate, a second reinforcing rib is fixedly connected.

[0011] In order to achieve the effect of preventing the coil from shifting, as a double - coil coupled inductor of the present utility model, on both the upper surface and the lower surface of the magnetic ring, limiting blocks are fixedly connected, and inside the limiting blocks, a coil is movably connected.

[0012] In order to achieve the effect of facilitating the connection with an external circuit board, as a double - coil coupled inductor of the present utility model, at the bottom of the outer surface of the coil, pins are fixedly connected, and on the outer surface of the housing, close to the side of the pins, through - holes are opened.

[0013] In order to achieve the effect of facilitating heat dissipation, as a double - coil coupled inductor of the present utility model, in the middle of the outer surface of the housing, a groove is opened, and inside the groove, ventilation holes are opened.

[0014] In order to achieve the effect of facilitating welding and installation, as a double - coil coupled inductor of the present utility model, on the lower surface of the housing, welding pads are fixedly connected, and at the four corners of the upper surface of the welding pads, positioning holes are opened.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] 1. In this utility model, through the settings of the housing, struts, first springs, nuts and protective sponges, the support plate supports the inductor body through the first springs, and limits it through the nuts. The top cover is threadedly connected to the outer surface of the housing, making the structure installation and disassembly more convenient. The housing provides preliminary protection for the inductor body and reduces the influence of the external environment on the inductor body at the same time. The first springs keep the inductor body in a suspended state through the support plate, preventing the housing from touching the outside world and causing damage to the inductor body. The protective sponge protects the top of the inductor body through the second springs, avoiding hard contact, having a good buffering and protective function, and improving the service life of the inductor.

[0017] 2. In this utility model, through the settings of the limiting blocks, coils, grooves and ventilation holes, multiple limiting blocks separate the coils, making the arrangement of the coils more uniform, strengthening the overall coordination. Compared with the traditional single-wire mode, the number of turns is doubled, thus increasing the inductance. Multiple grooves make the surface of the housing uneven, having a compressive effect, which can increase the strength of the housing surface, relieve and buffer the external force. Multiple ventilation holes keep the inside of the housing ventilated and dissipate heat, and can better dissipate the heat generated by the operation of the inductor body, avoiding component damage caused by too high temperature, and thus extending the service life. Brief Description of the Drawings

[0018] Figure 1 is the front view structural schematic diagram of the embodiment of this utility model;

[0019] Figure 2 is the sectional view structural schematic diagram of the embodiment of this utility model;

[0020] Figure 3 is the internal structural schematic diagram of the housing of the embodiment of this utility model;

[0021] Figure 4 is the structural schematic diagram of the inductor body of the embodiment of this utility model;

[0022] Figure 5 is the structural schematic diagram of the top cover of the embodiment of this utility model.

[0023] In the figure: 1, housing; 2, strut; 3, first spring; 4, support plate; 5, inductor body; 6, nut; 7, top cover; 8, second spring; 9, protective sponge; 10, fixing ring; 11, first reinforcing rib; 12, connecting ring; 13, card slot; 14, card block; 15, connecting plate; 16, magnetic ring; 17, second reinforcing rib; 18, limiting block; 19, coil; 20, pin; 21, through hole; 22, groove; 23, ventilation hole; 24, welding piece; 25, positioning hole. Detailed Description of the Invention

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment

[0026] As Figures 1-5 shown, a dual-coil coupled inductor includes a housing 1. A pillar 2 is fixedly connected to the middle of the inner bottom wall of the housing 1. A first spring 3 is sleeved on the bottom of the outer surface of the pillar 2. One end of the first spring 3 is fixedly connected to a support plate 4, and the support plate 4 is slidably connected to the pillar 2; An inductor body 5 is clamped on the middle of the outer surface of the pillar 2. A nut 6 is threadedly connected to the top of the outer surface of the pillar 2. A top cover 7 is threadedly connected to the top of the inner side surface of the housing 1. One side of the inner top wall of the top cover 7 is fixedly connected to a second spring 8, and one end of the second spring 8 is fixedly connected to a protective sponge 9.

[0027] During specific use, through the settings of the housing 1, the pillar 2, the first spring 3, the nut 6 and the protective sponge 9, the inductor body 5 is sleeved on the outer surface of the pillar 2, and the support plate 4 supports it through the first spring 3. Then, the nut 6 is threadedly connected to the outer surface of the pillar 2 to install the inductor body 5. The top cover 7 is threadedly connected to the outer surface of the housing 1, making the installation and disassembly of the inductor structural components more convenient, facilitating replacement and maintenance when damaged, and improving the convenience of the device. The housing 1 provides preliminary protection for the inductor body 5 to avoid direct collision damage and reduce the influence of the external environment on the inductor body 5 at the same time. The first spring 3 keeps the inductor body 5 in a suspended state through the support plate 4, with better ventilation and heat dissipation effects, and can prevent the housing 1 from touching the outside world and causing damage to the inductor body 5. The protective sponge 9 protects the top of the inductor body 5 through the second spring 8 to avoid hard contact, has a good buffering and protection function, and improves the service life of the inductor.

[0028] In this embodiment, a fixing ring 10 is fixedly connected to the middle of the inner top wall of the top cover 7, and a first reinforcing rib 11 is fixedly connected to the outer surface of the fixing ring 10.

[0029] During specific use, through the settings of the fixing ring 10 and the first reinforcing rib 11, four groups of first reinforcing ribs 11 are evenly fixed on the outer surface of the fixing ring 10 in a circumferential array, which can strengthen the structural strength of the top cover 7 and enhance the durability.

[0030] In this embodiment, the inductor body 5 includes a connecting ring 12 slidably connected to the outer surface of the support column 2. A clamping groove 13 is formed on the inner side surface of the connecting ring 12, and a clamping block 14 is fixedly connected to the outer surface of the support column 2 near the connecting ring 12.

[0031] During specific use, through the settings of the clamping groove 13 and the clamping block 14, when the inductor body 5 is installed, the connecting ring 12 is sleeved on the outer surface of the support column 2, and the clamping groove 13 and the clamping block 14 are clamped with each other to prevent the inductor body 5 from rotating during use and ensure stability during use.

[0032] In this embodiment, both sides of the outer surface of the connecting ring 12 are fixedly connected with connecting plates 15. One end of the connecting plate 15 is fixedly connected with a magnetic ring 16, and the middle part of the outer surface of the connecting plate 15 is fixedly connected with a second reinforcing rib 17.

[0033] During specific use, through the setting of the connecting plate 15, the connecting ring 12 is connected to the magnetic ring 16 through the connecting plate 15 to play a role in supporting and connecting. The second reinforcing rib 17 is fixed on the outer surface of the connecting plate 15, which can further strengthen the firmness of the connection between the connecting plate 15 and the connecting ring 12.

[0034] In this embodiment, limiting blocks 18 are fixedly connected to both the upper surface and the lower surface of the magnetic ring 16, and a coil 19 is movably connected to the inner side surface of the limiting block 18.

[0035] During specific use, through the setting of the limiting blocks 18, multiple limiting blocks 18 can separate the coil 19, making the arrangement of the coil 19 more uniform, strengthening the overall coordination, and doubling the number of turns compared with the traditional single-wire mode, thereby increasing the inductance.

[0036] In this embodiment, pins 20 are fixedly connected to the bottom of the outer surface of the coil 19, and through holes 21 are formed on the outer surface of the housing 1 near the pins 20.

[0037] During specific use, through the settings of the pins 20 and the through holes 21, the two groups of pins 20 are respectively positive and negative conductor structures, which are convenient for connecting the inductor body 5 to the circuit board, and the through holes 21 are convenient for the pins 20 to pass through.

[0038] In this embodiment, a groove 22 is formed in the middle of the outer surface of the housing 1, and ventilation holes 23 are formed inside the groove 22.

[0039] During specific use, through the settings of the grooves 22 and the ventilation holes 23, multiple grooves 22 are evenly formed in a circumferential array on the outer surface of the housing 1, making the surface of the housing 1 uneven, having a compressive effect, which can increase the strength of the surface of the housing 1, relieve and buffer the external force. Multiple ventilation holes 23 keep the interior of the housing 1 ventilated and dissipate heat, and can better dissipate the heat generated during the operation of the inductor body 5, avoiding component damage caused by excessive temperature, thereby extending the service life.

[0040] In this embodiment, a solder pad 24 is fixedly connected to the lower surface of the housing 1, and positioning holes 25 are formed at the four corners of the upper surface of the solder pad 24.

[0041] During specific use, through the settings of the solder pad 24 and the positioning holes 25, the solder pad 24 facilitates the soldering of the inductor, reducing the phenomenon of explosion during the soldering process, or the solder pad 24 is fixed on the circuit board by the cooperation of the positioning holes 25 and external bolts. These two installation methods ensure the firmness during use.

[0042] Working principle: During use, the inductor body 5 is sleeved on the outer surface of the support column 2, and the support plate 4 supports it through the first spring 3. The card slot 13 is engaged with the card block 14 to prevent the inductor body 5 from rotating during use. The nut 6 is threadedly connected to the outer surface of the support column 2 to limit the top of the inductor body 5. The top cover 7 is threadedly connected to the outer surface of the housing 1, and the housing 1 provides preliminary protection for the inductor body 5. The first spring 3 keeps the inductor body 5 in a suspended state through the support plate 4, preventing the housing 1 from touching the outside world and damaging the inductor body 5. The protective sponge 9 protects the top of the inductor body 5 through the second spring 8 to avoid hard contact. Multiple limiting blocks 18 can separate the coils 19, making the arrangement of the coils 19 more uniform. The two groups of pins 20 are respectively positive and negative conductor structures, facilitating the connection of the inductor body 5 to the circuit board. The ventilation holes 23 keep the interior of the housing 1 ventilated and dissipate heat, and can better dissipate the heat generated during the operation of the inductor body 5. The solder pad 24 facilitates the soldering of the inductor, reducing the phenomenon of explosion during the soldering process, or the solder pad 24 is fixed on the circuit board by the cooperation of the positioning holes 25 and external bolts. These two installation methods ensure the firmness during use.

[0043] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A dual-coil coupled inductor, comprising a housing (1), characterized in that: A support (2) is fixedly connected to the middle of the inner bottom wall of the shell (1); a first spring (3) is sleeved on the bottom of the outer surface of the support (2); one end of the first spring (3) is fixedly connected to a support plate (4); and the support plate (4) is slidably connected to the support plate (2); An inductor body (5) is clamped in the middle of the outer surface of the pillar (2), a nut (6) is threadedly connected to the top of the outer surface of the pillar (2), a top cover (7) is threadedly connected to the top of the inner side of the shell (1), a second spring (8) is fixedly connected to one side of the inner top wall of the top cover (7), and a protective sponge (9) is fixedly connected to one end of the second spring (8).

2. A dual-coil coupled inductor according to claim 1, characterized in that: A fixing ring (10) is fixedly connected to the middle portion of the inner top wall of the top cover (7), and a first reinforcing rib (11) is fixedly connected to the outer surface of the fixing ring (10).

3. The dual-coil coupled inductor according to claim 1, characterized in that: The inductor body (5) comprises a connecting ring (12) slidably connected to the outer surface of the pillar (2), a clamping groove (13) is provided on the inner side surface of the connecting ring (12), and a clamping block (14) is fixedly connected to the outer surface of the pillar (2) on one side close to the connecting ring (12).

4. The double-coil coupled inductor according to claim 3, characterized in that: Connecting plates (15) are fixedly connected to both sides of the outer surface of the connecting ring (12), a magnetic ring (16) is fixedly connected to one end of the connecting plate (15), and a second reinforcing rib (17) is fixedly connected to the middle of the outer surface of the connecting plate (15).

5. A double-coil coupled inductor according to claim 4, characterized in that: The upper surface and the lower surface of the magnetic ring (16) are both fixedly connected to a limit block (18), and the inner side surface of the limit block (18) is movably connected to a coil (19).

6. The double-coil coupled inductor according to claim 5, characterized in that: A pin (20) is fixedly connected to the bottom of the outer surface of the coil (19), and a through hole (21) is provided on a side of the outer surface of the housing (1) close to the pin (20).

7. The dual-coil coupled inductor according to claim 1, characterized in that: A groove (22) is provided in the middle of the outer surface of the shell (1), and a vent hole (23) is provided inside the groove (22).

8. The dual-coil coupled inductor according to claim 1, characterized in that: A welding piece (24) is fixedly connected to the lower surface of the shell (1), and positioning holes (25) are provided at the four corners of the upper surface of the welding piece (24).

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