Efficient heat dissipation magnetic core

Abstract

The utility model discloses an efficient radiating magnetic core, which belongs to the technical field of magnetic cores and comprises a magnetic core body and a bottom plate, the magnetic core body is fixed on the bottom plate, a radiating mechanism is arranged on the bottom plate and comprises a plurality of radiating fins, a fixing frame, a spring and a slider, the radiating fins are sequentially fixed in the fixing frame, and the spring is arranged in the fixing frame. Limiting holes are formed in the two sides of the fixing frame, the springs are arranged in the limiting holes, one ends of the springs are fixedly connected with the limiting holes, the other ends of the springs are fixedly connected with the sliding blocks, a containing groove and a ventilation groove which are communicated with each other are formed in the bottom plate, and positioning grooves corresponding to the limiting holes are formed in the inner wall of the containing groove. The magnetic core has the advantages that the heat dissipation mechanism is arranged so that when the magnetic core body generates heat, the heat enters the containing groove from the ventilation groove, then the heat generated by the magnetic core is transmitted out through the cooling fins, and therefore the heat dissipation effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic cores, and more specifically, to a magnetic core with high-efficiency heat dissipation. Background Art

[0002] The magnetic core is a sintered magnetic metal oxide composed of a mixture of various iron oxides. Common magnetic core materials include manganese-zinc ferrite and nickel-zinc ferrite. These materials have the characteristics of high magnetic permeability and high magnetic flux density and are often used in coils and transformers of various electronic devices to increase the magnetic induction strength of the electromagnet.

[0003] At present, a Chinese patent application numbered 201020507076.0 on the market discloses a manganese-zinc ferrite core for an ADSL transformer. The core includes a rectangular bottom plate, a central column and a peripheral column. The central column is rectangular in the middle and semicircular at both ends. The peripheral column surrounds the central column into a semicircular groove.

[0004] In the above patent, although the core loss, leakage inductance and core shape distortion factor are reduced, the total harmonic distortion of the transformer made of this core is several dB lower than that of the transformer made of the conventional EP type core, which extends the signal transmission distance, increases the transmission rate and improves the working stability of the transformer. However, the heat dissipation performance of the core is poor. Long-term use of the core is prone to generate a large amount of heat. If it cannot be discharged in time, the core is prone to damage. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a magnetic core with efficient heat dissipation.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A magnetic core with high efficiency in heat dissipation comprises a magnetic core body and a bottom plate, wherein the magnetic core body is fixed on the bottom plate, a heat dissipation mechanism is arranged on the bottom plate, the heat dissipation mechanism comprises a heat sink, a fixing frame, a spring and a slider, a plurality of heat sinks are arranged and are fixed in the fixing frame in sequence, limiting holes are arranged on both sides of the fixing frame, a spring is arranged in the limiting hole and one end of the spring is fixedly connected to the limiting hole, and the other end of the spring is fixedly connected to the slider, a storage groove and a ventilation groove which are interconnected are arranged on the bottom plate, a positioning groove corresponding to the limiting hole is arranged on the inner wall of the storage groove, the fixing frame is arranged in the storage groove and the slider extends into the positioning groove.

[0008] The utility model is further configured that a sliding groove connected to the positioning groove is opened on the inner wall of the storage groove, and the sliding groove corresponds to the sliding block.

[0009] The utility model is further configured that limiting plates are respectively arranged on both sides of the bottom plate, and a plurality of heat dissipation holes are opened on the limiting plates.

[0010] The utility model is further configured such that the height of the magnetic core body is consistent with that of the limiting plate.

[0011] By adopting the above technical solution, the beneficial effects of the utility model are:

[0012] By providing a heat dissipation mechanism, when the magnetic core body generates heat, the heat enters the storage slot from the ventilation slot, and then the heat generated by the magnetic core body is transmitted out through the heat sink, thereby achieving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of a magnetic core with high efficiency heat dissipation.

[0014] Figure 2 This is a cross-sectional view of a magnetic core with high efficiency heat dissipation.

[0015] Figure 3 is a partial enlarged view of A.

[0016] Description of the drawings: 1-magnetic core body, 2-bottom plate, 3-heat dissipation mechanism, 31-heat sink, 32-fixing frame, 33-spring, 34-slider, 4-limiting hole, 5-storage slot, 6-ventilation slot, 7-positioning slot, 8-slide slot, 9-limiting plate, 10-heat dissipation hole. DETAILED DESCRIPTION

[0017] Reference Figures 1 to 3 The embodiments of the utility model are further described.

[0018] A magnetic core with high efficiency in heat dissipation comprises a magnetic core body 1, a bottom plate 2, a heat dissipation mechanism 3 and a limiting plate 9. The bottom plate 2 is fixedly connected to the magnetic core body 1. The limiting plates 9 are arranged at both ends of the bottom plate 2. The height of the magnetic core body 1 is consistent with that of the two limiting plates 9. The heat dissipation mechanism 3 is placed on the bottom plate 2.

[0019] The heat dissipation mechanism 3 includes a heat sink 31, a fixed frame 32, a spring 33 and a slider 34. A plurality of heat sinks 31 are provided and fixed in the fixed frame 32 in sequence. Limiting holes 4 are provided on both sides of the fixed frame 32. The spring 33 is placed in the limiting hole 4 and one end of the spring 33 is fixedly connected to the limiting hole 4. The other end of the spring 33 is fixedly connected to the slider 34. The bottom plate 2 is provided with a storage slot 5 and a ventilation slot 6 that are interconnected. A positioning slot 7 and a slide slot 8 corresponding to the limiting hole 4 are provided on the inner wall of the storage slot 5. The slide slot 8 is connected to the positioning slot 7. The fixed frame 32 is placed in the storage slot 5 and the slider 34 extends into the positioning slot 7.

[0020] By providing the heat dissipation mechanism 3 , when the magnetic core body 1 generates heat, the heat enters the storage slot 5 from the ventilation slot 6 , and then the heat generated by the magnetic core body 1 is transferred out through the heat sink 31 , thereby achieving the heat dissipation effect.

[0021] The limiting plates 9 at both ends of the bottom plate 2 are provided with a plurality of heat dissipation holes 10;

[0022] By opening a plurality of heat dissipation holes 10 , when the magnetic core body 1 generates heat, the heat can be further dissipated through the heat dissipation holes 10 , thereby further improving the heat dissipation effect.

[0023] Working principle: first, squeeze the two sliders 34 on the fixing frame 32 so that the sliders 34 extend into the limiting holes 4, and then extend the fixing frame 32 into the storage slot 5, and at the same time, the two sliders 34 correspond to the slide slots 8 respectively, and at the same time, the elasticity of the spring 33 makes the slider 34 contact the slide slot 8 until the fixing frame 32 contacts the bottom of the storage slot 5 and the limiting holes 4 correspond to the positioning slot 7. At this time, the squeezed spring 33 is reset to extend the slider 34 into the positioning slot 7 for clamping, and then the fixing frame 32 is fixed in the storage slot 5, and then the coil is wound on the magnetic core body 1 to work. At this time, the temperature of the magnetic core body 1 becomes high and generates heat, and then the heat enters the fixing frame 32 in the storage slot 5 through the ventilation slot 6, and the heat is discharged through the heat sink 31, thereby achieving the heat dissipation effect of the magnetic core body 1. At the same time, the heat of the magnetic core body 1 can also be transmitted out from the heat dissipation holes 10 on the limiting plate 9, thereby further accelerating the heat dissipation effect.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any common changes and substitutions made by those skilled in the art within the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic core with high heat dissipation efficiency, comprising a magnetic core body (1) and a bottom plate (2), characterized in that: The magnetic core body (1) is fixed on a base plate (2). A heat dissipation mechanism (3) is provided on the base plate (2). The heat dissipation mechanism (3) comprises a heat sink (31), a fixing frame (32), a spring (33) and a slider (34). A plurality of heat sinks (31) are provided and are fixed in sequence in the fixing frame (32). Limiting holes (4) are provided on both sides of the fixing frame (32). The spring (33) is placed in the limiting hole (4) and one end of the spring (33) is fixedly connected to the limiting hole (4). The other end of the spring (33) is fixedly connected to the slider (34). The base plate (2) is provided with a storage groove (5) and a ventilation groove (6) which are interconnected. A positioning groove (7) corresponding to the limiting hole (4) is provided on the inner wall of the storage groove (5). The fixing frame (32) is placed in the storage groove (5) and the slider (34) extends into the positioning groove (7).

2. A magnetic core with high heat dissipation efficiency according to claim 1, characterized in that: A sliding groove (8) communicating with the positioning groove (7) is also provided on the inner wall of the storage groove (5), and the sliding groove (8) corresponds to the sliding block (34).

3. The magnetic core with high heat dissipation efficiency according to claim 1, characterized in that: Limiting plates (9) are respectively provided on both sides of the bottom plate (2), and a plurality of heat dissipation holes (10) are opened on the limiting plates (9).

4. The magnetic core with high heat dissipation efficiency according to claim 3, characterized in that: The magnetic core body (1) and the limiting plate (9) are at the same height.

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