A high power density inductor pin fixing structure

Abstract

This utility model discloses a high power density inductor pin fixing structure, belonging to the field of inductor technology. It includes a side plate fixedly connected to the side wall of a magnetic core housing; the side plate has a slot extending vertically through it, and the pins are fixed within the slot. This high power density inductor pin fixing structure replaces the bottom plate fixed to the bottom of the magnetic core housing by fixing the side plate to the side wall, thus saving the height space of the bottom plate and promoting the miniaturization and thinning of the inductor. Alternatively, it provides space support for increasing the power density of the inductor within the same volume.

Description

Technical Field

[0001] This utility model relates to the field of inductor technology, and in particular to a high power density inductor pin fixing structure. Background Technology

[0002] Inductors are widely used in various electrical appliances and electric vehicles. In low-power inductors, a bakelite base with terminals is typically used, and the metal conductor of the winding is wound around the metal terminals of the base as the output terminals of the inductor, which are made into plug-in or surface mount types.

[0003] As electrical appliances become increasingly powerful and generate larger currents, the power density requirements for inductors are also increasing, necessitating larger cross-sectional areas of the metal wires used in the windings, some of which already exceed 10 mm². 2 Since it cannot be directly wound onto the pins, high power density inductors typically use Litz wire or flat wire as windings. Because of their large conductor cross-sectional area, these products can be directly used as inductor leads after soldering.

[0004] For these high-power-density inductors, the terminal block positions need to be custom-sized to facilitate customer insertion and installation, while also preventing deformation caused by vibration during transportation. Figure 1 As shown, a base plate is needed to control the distance between the pins and fix the pins. The base plate is fixed to the bottom of the inductor core housing, and the pins pass through the base plate.

[0005] However, this raises a problem: the thickness of the base plate is generally 2.0mm. Smaller products can be thinned to a certain extent, but it is generally not less than 1.0mm. This will occupy the height dimension space, which is a great challenge to the miniaturization and thinning of inductors. The thinner the design is required, the higher the proportion of height space occupied by the base plate. The only way to meet the size requirements is to reduce the core thickness, thereby reducing the power density of the inductor and resulting in waste.

[0006] In view of this, a high power density inductor pin fixing structure is proposed. Utility Model Content

[0007] The purpose of this invention is to solve the problem in the prior art that the base plate occupies the height space of the inductor, which is a great challenge to the miniaturization and thinning of the inductor. The invention proposes a high power density inductor pin fixing structure.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A high power density inductor pin fixing structure includes a side plate, which is fixedly connected to the side wall of the magnetic core housing; the side plate is provided with a slot, which extends through the side plate from top to bottom, and the pin is fixed in the slot.

[0010] Preferably, the card slot is designed in two sets, namely a first card slot and a second card slot.

[0011] Preferably, one side of the side plate has an upward extension; the second slot is located on the extension.

[0012] Preferably, there is a gap between the magnetic core housing and the pin; the side plate is located within the gap.

[0013] Compared with the prior art, this utility model provides a high power density inductor pin fixing structure, which has the following advantages:

[0014] 1. This high power density inductor pin fixing structure fixes the side plate to the side wall of the magnetic core housing, replacing the bottom plate fixed to the bottom of the magnetic core housing to fix the pins. As a result, the inductor saves the height space of the bottom plate, which promotes the miniaturization and thinning of the inductor design. Alternatively, it provides space support for increasing the power density of the inductor within the same volume.

[0015] 2. In contrast to the traditional base plate fixed to the bottom of the magnetic core housing, the high power density inductor pin fixing structure in this case has a side plate attached to the side wall of the magnetic core housing. The contact area between the pin and the side plate is larger, which can further improve the fixing effect of the pin and prevent the pin from shaking or tilting. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of an inductor core housing;

[0017] Figure 2 This is a schematic diagram of a high power density inductor pin fixing structure proposed in this utility model;

[0018] Figure 3 An exploded view of a high power density inductor pin fixing structure proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the side plate of a high power density inductor pin fixing structure proposed in this utility model;

[0020] Figure 5 This is a side view of a high power density inductor pin fixing structure proposed in this utility model.

[0021] In the figure: 1. Magnetic core housing; 101. Base plate; 102. Gap; 2. Coil; 201. Short lead; 202. Long lead; 3. Side plate; 301. First slot; 302. Second slot; 303. Extension. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Example:

[0025] like Figure 1 The conventional inductor pin fixing structure involves fixing the base plate 101 to the bottom of the magnetic core housing 1, and then fixing the pin through the base plate 101. This will occupy the height dimension space of the inductor.

[0026] like Figures 2-5 The high power density inductor pin fixing structure proposed in this embodiment includes a side plate 3, which is fixedly connected to the side wall of the magnetic core housing 1, specifically fixed to the side wall on the side where the pin is located, and the side plate 3 is attached to the side wall of the magnetic core housing 1.

[0027] Side plate 3 is provided with a slot, the pins are fixed in the slot and extend downwards to facilitate insertion with other devices.

[0028] The card slot runs through the top and bottom of the side panel 3.

[0029] The side plate 3 is fixed to the magnetic core housing 1, and the side plate 3 is fixed to the pins by glue.

[0030] The side plate 3 is fixed to the side wall of the magnetic core housing 1 to replace the bottom plate 101 fixed to the bottom of the magnetic core housing 1, and the pins are fixed. In this way, the inductor saves the height space of the bottom plate 101, which promotes the miniaturization and thinning design of the inductor. Alternatively, it provides space support for increasing the power density of the inductor within the same volume.

[0031] Meanwhile, compared to the traditional base plate 101 fixed to the bottom of the magnetic core housing 1, in this case, the side plate 3 is attached to the side wall of the magnetic core housing 1, and the contact area between the pin and the side plate 3 is larger, which can further improve the fixing effect of the pin and prevent the pin from shaking or tilting.

[0032] The width of the card slot is the same as the width of the pin.

[0033] like Figures 2-4 Generally, the coil 2 inside an inductor, especially in high power density inductors, will have two leads, namely... Figure 2 and Figure 3 The short pin 201 and the long pin 202 in the middle.

[0034] The card slots are designed in two sets, namely the first card slot 301 and the second card slot 302.

[0035] The short pin 201 is fixed in the first slot 301, and the long pin 202 is fixed in the second slot 302.

[0036] like Figures 2-4 The side plate 3 has an upward extension 303 on one side, and the extension 303 is integrally formed with the side plate 3; the second slot 302 is located on the extension 303.

[0037] The second slot 302 extends vertically through the upper and lower extension portion 303.

[0038] The second card slot 302 is longer than the first card slot 301.

[0039] Since the long pin 202 is led out from the top of the coil 2, it is relatively long. At this time, the long pin 202 is fixed in the second slot 302, which increases the limiting distance of the long pin 202 and further improves the fixing effect of the pin.

[0040] like Figure 2 and Figure 5 There is a gap 102 between the magnetic core housing 1 and the pin; the side plate 3 is located within the gap 102.

[0041] During the production of this inductor, a gap 102 is reserved between the pins and the magnetic core housing 1 to facilitate the installation and fixing of the side plate 3.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high power density inductor pin fixing structure, comprising a side plate (3), characterized in that: The side plate (3) is fixedly connected to the side wall of the magnetic core housing (1); The side plate (3) is provided with a slot, which extends through the side plate (3) from top to bottom, and the pins are fixed in the slot.

2. The high power density inductor pin fixing structure according to claim 1, characterized in that, The card slots are designed in two sets, namely the first card slot (301) and the second card slot (302).

3. The high power density inductor pin fixing structure according to claim 2, characterized in that, One side of the side plate (3) is provided with an upward extension (303); The second slot (302) is located on the extension (303).

4. The high power density inductor pin fixing structure according to claim 1, characterized in that, There is a gap (102) between the magnetic core housing (1) and the pin; The side plate (3) is located within the gap (102).

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