Combined magnetic core and combined inductor

Abstract

The utility model belongs to the technical field of electromagnetism, and discloses a combined magnetic core and a combined inductor, the combined magnetic core comprises a first magnetic core and a second magnetic core connected with the first magnetic core, the first magnetic core comprises two first clamping pieces and at least one first supporting piece, and the two first clamping pieces are respectively connected with two ends of the first supporting piece. The first supporting piece is used for winding a first coil; the second magnetic core is connected with the first clamping piece and used for winding a second coil. In the using process, the first magnetic core and the first coil form a first inductor, the second magnetic core and the second coil form a second inductor, the area, not wound with the first coil, of the first magnetic core is connected with the area, not wound with the second coil, of the second magnetic core, the first magnetic core and the second magnetic core are connected into a whole, and then the split inductors are connected into a whole. Assembly with the shell is facilitated, and the assembly efficiency is improved; meanwhile, the inductors in the shell are prevented from being tightly attached, heat dissipation is guaranteed, and the service life of the inductors in the shell is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of electromagnetic technology, in particular to a combined magnetic core and a combined inductor. Background Art

[0002] Inductors are often used on circuit boards in various electrical devices. Depending on the circuit board design, the specifications of the inductors vary. For inductors that do not meet standard specifications, two inductors of different specifications need to be connected in series or in parallel to meet the circuit design requirements. An inductor consists of a magnetic core and a coil wound around it. Existing magnetic cores have a split structure, so the two inductors also have a split structure. To assemble the two inductors, they are placed in a housing and then mounted on the circuit board. During assembly, the two inductors need to be placed into the housing one by one, making assembly efficiency between the inductor and the housing low. Furthermore, the housing has limited space, so the two inductors fit tightly together, resulting in poor heat dissipation and affecting the service life of the inductors.

[0003] Therefore, there is an urgent need for a combined magnetic core and a combined inductor to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a combined magnetic core and a combined inductor, which can solve the problem that inductors need to be placed into a shell one by one, resulting in low assembly efficiency, and the magnetic cores of the inductors inside the shell are tightly fitted, resulting in poor heat dissipation of the inductors and affecting the service life of the inductors.

[0005] To achieve this object, one aspect of the present invention provides a composite magnetic core, comprising:

[0006] a first magnetic core, the first magnetic core comprising two first clamping members and at least one first supporting member, the two first clamping members being respectively connected to two ends of the first supporting member; wherein the first supporting member is used for winding a first coil;

[0007] A second magnetic core is connected to the first clamping member and is used for winding a second coil.

[0008] As a preferred technical solution of the combined magnetic core, the first magnetic core includes two first support members, the two first support members are arranged at intervals, and the first coil is wound around the outer circumference of each first support member.

[0009] As a preferred technical solution for the combined magnetic core, the second magnetic core includes two second clamping members and a second support member, the two second clamping members are respectively connected to the two ends of the second support member, and the second coil is wound around the outer circumference of the second support member.

[0010] As a preferred technical solution of the combined magnetic core, the cross-sectional shape of the second magnetic core is "I"-shaped or "C"-shaped.

[0011] As a preferred technical solution of the combined magnetic core, the second clamping member is connected to the first clamping member.

[0012] As a preferred technical solution of the combined magnetic core, the first clamping member includes a first side surface and a second side surface opposite to the first side surface. The second magnetic core is connected to the first side surface, and the distance between the first support member and the first side surface is less than the distance between the first support member and the second side surface.

[0013] As a preferred technical solution of the combined magnetic core, there is one second magnetic core, and the second magnetic core is connected to one of the two first clamping members, and the second magnetic core is connected to the first clamping member along the interval direction of the two first support members; wherein, the width of the first clamping member connected with the second magnetic core is greater than the width of the first clamping member not connected with the second magnetic core.

[0014] As a preferred technical solution of the combined magnetic core, the first support member includes two adhesively bonded parts;

[0015] Moreover, the first magnetic core and the second magnetic core are connected by an adhesive bonding method.

[0016] One aspect of the present invention provides a combined inductor, and the combined inductor includes the combined magnetic core described in any one of the above.

[0017] As a preferred technical solution of the combined inductor, the combined inductor further includes a housing, a first coil wound around the first support member, and a second coil wound around the second magnetic core. The combined magnetic core is placed inside the housing, and both ends of the first coil and both ends of the second coil extend out of the housing.

[0018] The beneficial effects of the present invention are:

[0019] The utility model provides a combined magnetic core comprising: a first magnetic core and a second magnetic core connected to the first magnetic core, wherein the first magnetic core comprises two first clamping members and at least one first support member, the two first clamping members being respectively connected to both ends of the first support member; wherein the first support member is used to wind a first coil; and the second magnetic core is connected to the first clamping member and is used to wind a second coil. The first magnetic core and the first coil can form a first inductor, and the second magnetic core and the second coil can form a second inductor. The second magnetic core is connected to the first clamping member of the first magnetic core, so that the first magnetic core and the second magnetic core are combined into a single structure, thereby eliminating the need for workers to place the first and second inductors one by one into the housing, thereby improving the assembly efficiency of the first and second inductors and the housing. At the same time, the second magnetic core is connected to the first clamping member of the first magnetic core, thereby avoiding the large-area facing relationship between the first and second magnetic cores, thereby preventing the first and second inductors from being tightly fitted inside the housing, ensuring the heat dissipation of the first and second inductors, and thereby ensuring the service life of the first and second inductors.

[0020] The combined inductor provided by the utility model does not require the first inductor and the second inductor to be placed inside the housing one by one, thus improving assembly efficiency. At the same time, the first inductor and the second inductor inside the housing will not be tightly fitted, thus extending service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of the combined inductor provided by the utility model;

[0022] Figure 2 This is a schematic diagram of the assembly of the first magnetic core and the second magnetic core of the combined inductor provided by the utility model from a first perspective;

[0023] Figure 3 This is a side view from a first perspective of the first magnetic core and the second magnetic core of the combined inductor provided by the present invention;

[0024] Figure 4 This is a side view from a second perspective of the first magnetic core and the second magnetic core of the combined inductor provided by the present invention;

[0025] Figure 5 This is a front view of the first magnetic core and the second magnetic core of the combined inductor provided by the utility model;

[0026] Figure 6 This is a rear view of the first magnetic core and the second magnetic core of the combined inductor provided by the utility model;

[0027] Figure 7 This is a top view from a first perspective of the first magnetic core and the second magnetic core of the combined inductor provided by the utility model;

[0028] Figure 8 This is a top view from a second perspective of the first magnetic core and the second magnetic core of the combined inductor provided by the utility model.

[0029] In the picture:

[0030] 1. First inductor; 11. First magnetic core; 111. First clamping member; 112. First support member; 12. First coil;

[0031] 2. Second inductor; 21. Second magnetic core; 211. Second clamping member; 212. Second supporting member; 22. Second coil. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0033] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0036] like Figures 1 to 3 As shown, this embodiment provides a combined magnetic core, including a first magnetic core 11 and a second magnetic core 21, wherein the first magnetic core 11 includes two first clamping members 111 and at least one first support member 112, the two first clamping members 111 being respectively connected to the two ends of the first support member 112, and the first support member 112 being used to wind the first coil 12, thereby forming the first magnetic core 11 and the first coil 12 to form a first inductor 1, and the second magnetic core 21 being connected to the first clamping member 111, and being used to wind the second coil 22 to form the second inductor 2. By connecting the second magnetic core 21 to the first clamping member 111 of the first magnetic core 11, the first magnetic core 11 and the second magnetic core 21 are combined into an integral structure, thereby combining the first inductor 1 and the second inductor 2 to form an integral structure, avoiding the need for workers to place the first inductor 1 and the second inductor 2 one by one into the housing, thereby improving the assembly efficiency of the first inductor 1, the second inductor 2 and the housing. At the same time, the second magnetic core 21 is connected to the first clamping piece 111 of the first magnetic core 11, thereby avoiding the large-area facing relationship between the first magnetic core 11 and the second magnetic core 21, thereby avoiding the problem of close fit between the first inductor 1 and the second inductor 2 inside the shell, thereby ensuring the heat dissipation of the first inductor 1 and the second inductor 2, and thus ensuring the service life of the first inductor 1 and the second inductor 2.

[0037] The first magnetic core 11 and the second magnetic core 21 connected to the first magnetic core 11 are combined to form the combined magnetic core of this embodiment. The combined magnetic core is described in detail below to further introduce the structure of the combined inductor through the description of the combined magnetic core and the relationship between the combined magnetic core and the coil.

[0038] In this embodiment, the first magnetic core 11 and the second magnetic core 21 are both made of powder metallurgy alloy material.

[0039] In this embodiment, the first magnetic core 11 includes two first clamping members 111 and at least a first support member 112. The two first clamping members 111 are respectively connected to the two ends of the first support member 112, which can ensure the stability of the structure of the first magnetic core 11 and the service life of the first inductor 1.

[0040] In some more specific embodiments, the two first clamping members 111 are perpendicularly connected to the ends of the first support member 112. The first coil 12 is wrapped around the outer periphery of the first support member 112 to ensure the rationality of the design of the first inductor 1. In this embodiment, the two first clamping members 111 are plate-like structures, and the first support member 112 is a columnar structure, further improving the overall structural stability of the first magnetic core 11 and ensuring stable placement of the first inductor 1.

[0041] Preferably, the first magnetic core 11 includes two first support members 112, both of the two first support members 112 are connected between the two first clamping members 111, and the two first support members 112 are spaced apart. The arrangement of the two first support members 112 can further improve the structural stability of the first magnetic core 11. Even if the electronic device falls or passes through a bumpy section, the first magnetic core 11 will not break, ensuring the use quality of the first inductor 1. In this embodiment, the first coil 12 is wound around the outer periphery of each first support member 112. It can be understood that at this time, the first inductor 1 is an inverter inductor.

[0042] In this embodiment, the second magnetic core 21 includes two second clamping members 211 and a second support member 212, and the two second clamping members 211 are respectively connected to both ends of the second support member 212. Among them, the second coil 22 is wound around the outer periphery of the second support member 212. It can be understood that at this time, the second inductor 2 is a balance inductor, and the first inductor 1 and the second inductor 2 are different types of inductors. Specifically, the two second clamping members 211 are respectively vertically connected to both ends of the second support member 212.

[0043] In this embodiment, the second clamping member 211 is a columnar shape with a rectangular cross-section, and the second support member 212 is a columnar shape with a circular cross-section to further improve the overall structural stability of the second magnetic core 21. Among them, according to the different placement positions of the second support member 212, the cross-sectional shape of the second magnetic core 21 is different. When the second support member 212 is connected to the central position of the two second clamping members 211, the cross-sectional shape of the second magnetic core 21 is an "I" shape at this time. When the second support member 212 is connected to the edge position of the two second clamping members 211, the cross-sectional shape of the second magnetic core 21 is a "匚" shape at this time. Regarding the structure of the second magnetic core 21, designers can select according to the usage requirements, and no specific restrictions are made here.

[0044] In this embodiment, the second clamping member 211 is connected to the first clamping member 111 so that the first inductor 1 and the second inductor 2 are connected. Specifically, the second clamping member 211 is vertically connected to the first clamping member 111. Regarding the positional relationship between the first inductor 1 and the second inductor 2, on the one hand, both of the two second clamping members 211 in the second magnetic core 21 can be connected to one of the first clamping members 111 in the first magnetic core 11. At this time, the second inductor 2 can be connected to the first clamping member 111 above the first magnetic core 11, or can be connected to the first clamping member 111 below the first magnetic core 11, and no specific restrictions are made. Preferably, it is connected to the first clamping member 111 above the first magnetic core 11.

[0045] In this embodiment, the first clamping member 111 includes a first side surface and a second side surface opposite to the first side surface, the second magnetic core 21 is connected to the first side surface, and the distance between the first support member 112 and the first side surface is smaller than the distance between the first support member 112 and the second side surface. It is understandable that the distance between the first support member 112 and the first side surface can be the distance between the axis of the first support member 112 and the first side surface, or it can be the minimum distance between the first support member 112 and the first side surface. Thus, by reducing the size of the first clamping member 111 on one side of the first support member 112, that is, reducing the size in the width direction, a portion of space is added to accommodate the second magnetic core 21, thereby further reducing the volume of the combination of the first magnetic core 11 and the second magnetic core 21. At the same time, the second clamping member 211 is connected to the side surface of the first clamping member 111 to ensure that the height of the combined inductor occupies a certain space.

[0046] It is understood that the connection between the second magnetic core 21 and the first side surface can be achieved by connecting the second magnetic core 21 to a first clamping member 111, and the second magnetic core 21 to the first side surface of the first clamping member 111. On the other hand, two second clamping members 211 can also be connected to two first clamping members 111 in a one-to-one correspondence. In this case, the force on the connected first inductor 1 and second inductor 2 is stable, ensuring the stability of the combined inductor. Regarding the positional relationship between the first inductor 1 and the second inductor 2, designers can make comprehensive considerations based on the structure of the electrical equipment and the layout of the circuit board, and no specific restrictions are imposed here.

[0047] In this embodiment, there is a single second magnetic core 21, which is connected to one of the two first clamping members 111. The second magnetic core 21 is also connected to the first clamping member 111 along the direction separating the two first support members 112. In some embodiments, the width of the first clamping member 111 to which the second magnetic core 21 is connected is greater than the width of the first clamping member 111 not to which the second magnetic core 21 is connected. It is understood that the direction separating the two first support members 112 is the length direction of the first clamping member 111, and the direction perpendicular to the length direction is the width direction of the first clamping member 111.

[0048] Specifically, when both second clamping members 211 in the second magnetic core 21 are connected to one first clamping member 111 in the first magnetic core 11, for example, the first clamping member 111 located above the first support member 112, the width of the first clamping member 111 located below the first support member 112 is greater than the width of the first clamping member 111 located above the first support member 112. In this case, the first clamping member 111 located below the first support member 112 is symmetrical with respect to the centerline of the first support member 112.

[0049] Depending on circuit design requirements, in some embodiments, there may be multiple second magnetic cores 21, each of which may be connected to a side surface or other surface of a first clamping member 111. Alternatively, some second magnetic cores 21 may be connected to one first clamping member 111, while others may be connected to another first clamping member 111.

[0050] In this embodiment, the first support member 112 comprises two bonded parts, and the first magnetic core 11 and the second magnetic core 21 are connected by bonding, specifically using an epoxy resin adhesive. During bonding, the bonded portion is cured to increase the bonding strength, thereby improving the impact and vibration resistance of the combined inductor and further enhancing the overall structural stability of the combined inductor.

[0051] In this embodiment, a combined inductor is provided. The combined inductor includes the above-mentioned combined magnetic core, a housing, a first coil 12 wound around a first support member 112, and a second coil 22 wound around a second magnetic core 21. The first magnetic core 11 and the first coil 12 form a first inductor 1, and the second magnetic core 21 and the second coil 22 form a second inductor 2. The first inductor 1 and the second inductor 2 are both placed within the housing to protect the first inductor 1 and the second inductor 2 from dust and moisture. The provision of the housing can improve the service life of the combined inductor. At the same time, because the housing protects the first inductor 1 and the second inductor 2, it can prevent scratches on the first magnetic core 11 and the second magnetic core 21, thereby ensuring the performance of the first inductor 1 and the second inductor 2.

[0052] The combined inductor provided in this embodiment does not require the first inductor 1 and the second inductor 2 to be placed inside the housing one by one, thus improving assembly efficiency. Furthermore, the first inductor 1 and the second inductor 2 inside the housing will not be tightly fitted, thus extending service life.

[0053] Furthermore, both ends of the first coil 12 in the first inductor 1 and both ends of the second coil 22 in the second inductor 2 are extended out of the shell, so that designers can connect the first inductor 1 and the second inductor 2 in series or in parallel according to usage requirements, and both ends of the first coil 12 and the second coil 22 are marked so that designers can distinguish between the first inductor 1 and the second inductor 2 to ensure that the first inductor 1 and the second inductor 2 can be accurately connected.

[0054] In this embodiment, the first coil 12 and the second coil 22 are both made of flat enameled copper wire, which not only facilitates the winding of the first coil 12 and the second coil 22 but also ensures the performance of the combined inductor.

[0055] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A composite magnetic core, characterized in that: Comprising: A first magnetic core (11), the first magnetic core (11) includes two first clamping members (111) and at least one first support member (112), and the two first clamping members (111) are respectively connected to both ends of the first support member (112); wherein, the first support member (112) is used for winding a first coil (12); A second magnetic core (21), the second magnetic core (21) is connected to the first clamping member (111), and the second magnetic core (21) is used for winding a second coil (22).

2. The composite magnetic core according to claim 1, characterized in that The first magnetic core (11) includes two first support members (112), the two first support members (112) are arranged at intervals, and the first coil (12) is wound around the outer periphery of each first support member (112).

3. The composite magnetic core according to claim 1, wherein: The second magnetic core (21) includes two second clamping members (211) and a second support member (212), the two second clamping members (211) are respectively connected to both ends of the second support member (212), and the second coil (22) is wound around the outer periphery of the second support member (212).

4. The composite magnetic core according to claim 3, characterized in that: The cross-sectional shape of the second magnetic core (21) is "I"-shaped or "C"-shaped.

5. The composite magnetic core according to claim 3, characterized in that: The second clamping member (211) is connected to the first clamping member (111).

6. The composite magnetic core according to claim 1, characterized in that: The first clamping member (111) includes a first side surface and a second side surface opposite to the first side surface, the second magnetic core (21) is connected to the first side surface, and the distance between the first support member (112) and the first side surface is less than the distance between the first support member (112) and the second side surface.

7. The composite magnetic core according to claim 2, characterized in that: There is one second magnetic core (21), the second magnetic core (21) is connected to one of the two first clamping members (111), and the second magnetic core (21) is connected to the first clamping member (111) along the interval direction of the two first support members (112); wherein, the width of the first clamping member (111) connected with the second magnetic core (21) is greater than the width of the first clamping member (111) not connected with the second magnetic core (21).

8. The combined magnetic core according to any one of claims 1 to 7, characterized in that: The first support member (112) includes two adhesively bonded parts; and, the first magnetic core (11) and the second magnetic core (21) are connected by an adhesive bonding method.

9. A combined inductor, characterized in that: The combined inductor includes the combined magnetic core according to any one of claims 1-8.

10. The combined inductor according to claim 9, characterized in that: The combined inductor further includes a housing, a first coil (12) wound around the first support member (112), and a second coil (22) wound around the second magnetic core (21), the combined magnetic core is placed in the housing, and both ends of the first coil (12) and both ends of the second coil (22) extend out of the housing.

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