Compact NR power inductor

Abstract

The utility model discloses a compact design NR power inductor which comprises an inductor body and a reinforcing assembly, connecting pole plates used for being connected with a circuit board are symmetrically arranged at the positive electrode end and the negative electrode end of the inductor body and located at the bottom of the inductor body, and the reinforcing assembly is used for increasing the connecting strength of the tin soldering positions of the connecting pole plates and the circuit board and comprises inserting strips. One end of the insertion strip is inserted and connected to the side of the connecting pole plate, the outer side of the insertion strip is provided with a concave-convex part, and the other end of the insertion strip is provided with a fixing part for locking the position of the insertion strip; according to the utility model, the side of the connecting pole plate at the bottom of the inductor main body is connected with the reinforcing component in a penetrating manner, the insertion strip is locked in the fixing part in the reinforcing component, and the contact welding area of the connecting pole plate is increased by utilizing the concave-convex part arranged on the outer side of the insertion strip, so that the contact area of the connecting pole plate and welding flux at the welding position of a circuit board is increased; therefore, the problem that the binding force at the welding position is limited due to the limited contact area of the polar plate and the welding flux is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to inductance technical field, especially in a kind of compact design NR power inductance. BACKGROUND

[0002] In today's highly developed electronic component field, power inductance as one of the most important components, its performance and reliability degree plays a decisive role in the stable operation of the entire circuit system, with the continuous development of modern electronic equipment towards miniaturization, lightweight, more stringent requirements for the compact design of power inductance are put forward;

[0003] However, in terms of the current technical level, in the process of trying to reduce the size of inductor to meet the compact design requirements, when the inductance connecting plate and the circuit board are welded, due to the limitation of the structure design of the plate, the contact area between the connecting plate and the solder is limited, which affects the bonding force of the existing NR power inductance in welding. In actual use, this problem is easy to cause the fracture of welding point, which affects the stability of the connecting plate welding place;

[0004] In view of the above problems, there is an urgent need for a NR power inductance design that can increase the contact area between the connecting plate and the solder. Therefore, the utility model provides a new compact design NR power inductance. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a compact design NR power inductance to solve the problems raised in the background art.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a compact design NR power inductance, comprising:

[0007] Inductor body, the positive and negative poles of the inductor body and the bottom of the inductor body are symmetrically provided with connecting plate for connecting circuit board;

[0008] Strengthening assembly, the strengthening assembly is used to increase the connection strength of the tin soldering place of the connecting plate and the circuit board, the strengthening assembly comprises a plug strip, one end of the plug strip is connected to the side of the connecting plate, the outer side of the plug strip is provided with concave-convex part for increasing the contact area of the connecting plate and the circuit board, the other end of the plug strip is provided with fixing part for locking the position of the plug strip.

[0009] Preferably, the side of the connecting plate is provided with a movable slot, the movable slot is provided as a convex slot, and the movable slot is used for the insertion of the plug strip.

[0010] Preferably, the concave-convex portion includes a plurality of raised ribs, which are disposed on the outer side of the insert and located at the bottom of the movable groove.

[0011] Preferably, the raised ribs are configured as trapezoidal strips.

[0012] Preferably, the fixing part includes:

[0013] A pick-up post, wherein the pick-up post is disposed at the other end of the insert;

[0014] Solder, which is disposed in the inner cavity of the movable groove, is used to solidify and fix the pick-up column.

[0015] Preferably, the end of the picking post furthest from the insert is configured as a flat nozzle, and the flat nozzle at the end of the picking post is used to assist in pulling the picking post out.

[0016] Preferably, a support pad is provided on the top of the inductor body, and the support pad is used to buffer the impact of external forces on the inductor body.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] This invention features a reinforcing component that is inserted into the side of the connecting plate at the bottom of the inductor body. The reinforcing component has a locking insert in its fixing part. The concave and convex parts on the outside of the insert increase the contact welding area of ​​the connecting plate, thereby increasing the contact area of ​​the solder at the connection plate and the circuit board. This avoids the problem of limited bonding strength at the welding point due to the limited contact area between the plate and the solder. Attached Figure Description

[0019] Figure 1 This is one of the overall structural schematic diagrams of this utility model.

[0020] Figure 2 The second schematic diagram shows the overall structure of this utility model.

[0021] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0022] Figure 4 This is a schematic diagram of the structure of the reinforcing component of this utility model.

[0023] Figure 5 This is a side view of the insert, raised ribs, and pick-up post of this utility model.

[0024] In the diagram: 1. Inductor body; 101. Support pad; 2. Connecting plate; 201. Movable slot; 3. Insert; 301. Protruding rib; 4. Pick-up post; 5. Solder. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides, for example Figures 1-5 As shown:

[0027] Example 1,

[0028] A compact NR power inductor includes: an inductor body 1 and a reinforcement component;

[0029] It should be noted that the positive and negative terminals of the inductor body 1 are symmetrically provided with connecting plates 2 for connecting the circuit board at the bottom of the inductor body 1, and the reinforcing components are used to increase the connection strength between the connecting plates 2 and the solder joint of the circuit board.

[0030] Specifically, the working principle of the inductor body 1 refers to that of the NR3015 inductor. The connecting plate 2 is welded and fixed to the positive and negative terminals of the inductor body 1. The connecting plate 2 and the inductor body 1 are also glued together. A support pad 101 is glued to the top of the inductor body 1. The support pad 101 is used to buffer the impact of external forces on the inductor body 1. The support pad 101 is made of sponge. Sponge has good resilience and tensile strength, and strong toughness. It can play a shockproof and buffering role. When the inductor body 1 is subjected to vibration or impact, the sponge pad can absorb and disperse energy, prevent the inductor body 1 from being damaged by violent vibration, and ensure its stability and reliability.

[0031] It should be noted that the reinforcing component includes a plug 3. One end of the plug 3 is inserted and connected to the side of the connecting electrode plate 2. The outer side of the plug 3 is provided with a concave-convex part to increase the contact area between the connecting electrode plate 2 and the circuit board. The other end of the plug 3 is provided with a fixing part to lock the position of the plug 3.

[0032] Specifically, the insert 3 is made of pure copper, and a movable groove 201 is provided on the side of the connecting plate 2. The movable groove 201 is a convex groove. The movable groove 201 is used for the insertion of the insert 3. The insert 3 is a convex strip. The insert 3 and the movable groove 201 are matched so that the insert 3 is limited to the movable groove 201.

[0033] It should be noted that the concave and convex portion includes multiple raised ribs 301, which are disposed on the outer side of the insert 3 and located at the bottom of the movable groove 201;

[0034] Specifically, the raised rib 301 is set as a trapezoidal strip, and its material is pure copper. It is formed and fixed with the insert strip 3 by an integral casting process. The gap between the raised ribs 301 is used for the solder to enter and solidify.

[0035] Example 2,

[0036] A fixing part is applied to the compact design of the NR power inductor in Embodiment 1;

[0037] Specifically, the fixing part includes: the picking post 4 and the solder 5;

[0038] It should be noted that the pick-up column 4 is welded to the other end of the insert 3, and the solder 5 is placed in the inner cavity of the movable groove 201. The solder 5 solidifies in the movable groove 201. The solder 5 does not contact the insert 3, but only solidifies to fix the position of the pick-up column 4 and the movable groove 201, thereby fixing the position of the pick-up column 4. The end of the pick-up column 4 away from the insert 3 is set as a flat nozzle. The flat nozzle at the end of the pick-up column 4 is used to assist the pull-out of the pick-up column 4.

[0039] Specifically, the flat-mouth structure at the end of the 4-pin makes it easy for workers to use tools to grip the 4-pin and install and remove the insert 3.

[0040] In actual use, a reinforcing component is inserted and connected to the side of the connecting plate 2 at the bottom of the inductor body 1. The fixing part of the reinforcing component locks the insert 3. The concave and convex parts set on the outside of the insert 3 increase the contact welding area of ​​the connecting plate 2, thereby increasing the contact area of ​​the solder at the solder joint between the connecting plate 2 and the circuit board. This avoids the problem of limited bonding force at the solder joint due to the limited contact area between the connecting plate 2 and the solder.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A compactly designed NR power inductor, characterized in that, include: Inductor body (1), with connecting plates (2) for connecting circuit boards symmetrically arranged at the positive and negative ends of the inductor body (1) and at the bottom of the inductor body (1); The reinforcing component is used to increase the connection strength between the connecting electrode plate (2) and the circuit board solder joint. The reinforcing component includes a strip (3). One end of the strip (3) is inserted and connected to the side of the connecting electrode plate (2). The outer side of the strip (3) is provided with a concave-convex part for increasing the contact area between the connecting electrode plate (2) and the circuit board. The other end of the strip (3) is provided with a fixing part for locking the position of the strip (3).

2. The compact NR power inductor according to claim 1, characterized in that, The connecting plate (2) has a movable groove (201) on its side. The movable groove (201) is a convex groove and is used for inserting the insert (3).

3. The compactly designed NR power inductor according to claim 2, characterized in that, The concave and convex portion includes a plurality of raised ribs (301), which are disposed on the outside of the insert (3) and located at the bottom of the movable groove (201).

4. The compact NR power inductor according to claim 3, characterized in that, The raised rib (301) is configured as a trapezoidal strip.

5. The compactly designed NR power inductor according to claim 1, characterized in that, The fixing part includes: Take-up post (4), which is disposed at the other end of insert (3); Solder (5), which is disposed in the inner cavity of the movable groove (201), and is used to solidify and fix the pick-up column (4).

6. The compact NR power inductor according to claim 5, characterized in that, The end of the picking post (4) away from the insert (3) is configured as a flat mouth shape, and the flat mouth shape at the end of the picking post (4) is used to assist the pulling of the picking post (4).

7. The compactly designed NR power inductor according to claim 1, characterized in that, The top of the inductor body (1) is provided with a support pad (101), which is used to buffer the impact of external forces on the inductor body (1).

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