CN220106163U

CN220106163U - Magnetic component

Info

Publication number: CN220106163U
Application number: CN202320707721.0U
Authority: CN
Inventors: 黄家毅; 张志军; 郑祝梢; 李兰甲; 常士鹏; 李奇杰
Original assignee: Miyang Mingpu Electronics Co ltd
Current assignee: Miyang Mingpu Electronics Co ltd
Priority date: 2023-04-03
Filing date: 2023-04-03
Publication date: 2023-11-28
Anticipated expiration: 2033-04-03

Abstract

The utility model provides a magnetic component, which comprises a coil and a bottom cover, wherein a top cover for covering the coil is arranged on the bottom cover, the coil is positioned between the top plate and the bottom cover, the top cover comprises a top plate and a plurality of supporting legs, the plurality of supporting legs are connected with the top plate, the plurality of supporting legs are provided with hooking pieces, the bottom cover is provided with mounting holes corresponding to the hooking pieces, the hooking pieces are hooked and matched with the mounting holes, the coil is fixedly connected with the bottom cover, the bottom cover is provided with a plurality of through holes, end pins of the coil penetrate through the through holes and extend out of the through holes, so that the top cover can be detached, the top cover can be detached after welding is finished, the height of the top cover can be reduced, and the occupied space on a PCB (printed circuit board) is reduced.

Description

Magnetic component

Technical Field

The utility model relates to the technical field of electronic transformers and electronic circuits, in particular to a magnetic component.

Background

PCBA is a short term for printed circuit board assembly, and is obtained by performing surface mount reflow Soldering (SMT) on a Printed Circuit Board (PCB) by using SMT equipment, and possibly performing wave soldering after DIP plug-in. THR is an abbreviation for Through hole reflow, through-hole reflow soldering, is a soldering process.

The difference from the traditional wave soldering is that the through hole reflow soldering is an integration of a plug-in technology and a patch technology, the components adopting the through hole reflow soldering process are suitable for automatic assembly and soldering in a reflow oven, and the whole process only needs one complete process, instead of twice processing of wave soldering and patch device reflow soldering.

The existing magnetic components and parts can not be directly applied to automatic surface mounting equipment, and are required to be taken out through a manipulator, or manual plug-in components are required, so that the requirements of automatic surface mounting loading materials can be met, the top of the magnetic components and parts are required to be identical to those of SMD components, a top plane auxiliary structure which can be adsorbed by the automatic surface mounting equipment is required to be a cover plate, but some printed circuit boards have space size limitation on the magnetic components and parts, the structure is generally fixed on the components and parts and is difficult to detach, and the structure can not be applied to various components, so that the occupied space and the height of products can be increased, and the requirements are difficult to meet. Therefore, a solution to the above-mentioned problems is needed.

Disclosure of Invention

The utility model provides a magnetic component based on at least one of the technical problems.

A magnetic component comprising: coil and bottom, be provided with the top cap that is used for closing the coil on the bottom, the coil is located the top cap with between the bottom, the top cap includes roof and a plurality of root stabilizer blade, a plurality of the stabilizer blade with the roof is connected, a plurality of be provided with on the stabilizer blade and hold the piece, be provided with on the bottom with hold the hole of holding that holds that the hook corresponds, hold the piece with hold the hole of holding that the hook holds to hold the cooperation, the coil with bottom fixed connection, be provided with a plurality of through-hole on the bottom, the tip pin of coil passes the through-hole and stretches out outside the through-hole.

Preferably, the hooking piece is an elastic buckle, an elastic rod is connected between the elastic buckle and the supporting leg, a hooking hole is formed in a hole wall of the mounting hole, the elastic buckle and the elastic rod extend into the mounting hole, and when the elastic buckle is aligned with the hooking hole, the elastic buckle is matched with the hooking hole, and the elastic rod abuts against the hole wall of the mounting hole.

Preferably, the elastic buckle is provided with a guide surface, and the guide surface is obliquely arranged.

Preferably, a groove is formed in the lower side of the bottom cover, a through hole is formed in one side of the groove, and the groove is communicated with the through hole.

Preferably, the hole wall of the through hole is provided with a plurality of arc holes.

Preferably, a heat conducting member is provided between the top plate and the coil.

Preferably, the diameter of the end pin of the coil is not less than 0.8mm.

Preferably, a reinforcing rib is connected between the top plate and the support leg.

Preferably, the end pins of the coil are fixed at the through holes by adhesive bonding.

The beneficial effects are that: the utility model is provided with the top cover, the top cover is in hooking fit with the mounting hole through the hooking piece, so that the top cover can be detached, after the automatic chip mounter adsorbs the top cover, the top cover can be detached, thereby reducing the height, reducing the occupied space of the magnetic components on the PCB, and being applicable to through hole reflow soldering and multiple magnetic components.

Drawings

FIG. 1 shows a schematic diagram of the structure of the present utility model;

FIG. 2 shows a schematic cross-section of the present utility model;

FIG. 3 shows an enlarged view of portion A of FIG. 2;

FIG. 4 shows a second structural schematic of the present utility model;

FIG. 5 shows a third schematic structural view of the present utility model;

FIG. 6 shows an exploded view of the present utility model in the form of a toroidal common mode inductor;

reference numerals:

a coil 1; a bottom cover 2; a top cover 3; a top plate 4; a support leg 5; an end pin 6; a heat conductive member 7; an elastic rod 8; an elastic buckle 9; a mounting hole 10; a perforation 11; a hooking hole 12; a spacer 13; an arcuate aperture 14; a reinforcing rib 15; a groove 16; a through hole 17.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

The magnetic component shown in fig. 1-2 comprises a coil 1 and a bottom cover 2, wherein a top cover 3 is further arranged on the bottom cover 2, the coil 1 is arranged between the top cover 3 and the bottom cover 2, an end pin 6 of the coil 1 is fixedly connected with the bottom cover 2, and the top cover 3 covers the top of the coil 1. In this embodiment, the top cover 3 provides a plane for the adsorption of the patch device, and the bottom cover 2 may be made of LCP material or metal material.

As shown in fig. 2 and 3, the top cover 3 includes a top plate 4 and a plurality of legs 5, and the plurality of legs 5 are connected to the top plate 4. In this embodiment, the number of the legs 5 is two, and the two legs 5 are respectively located at two diagonally opposite ends of the top plate 4. The angle between stabilizer blade 5 and roof 4 is 90 degrees, and each stabilizer blade 5 is kept away from the one end of roof 4 and all is connected with the hook and holds piece 7, and the both ends of the diagonal angle of bottom 2 all are equipped with the mounting hole 10 that corresponds with hook and hold piece 7, and each hook holds piece 7 and mounting hole 10 hook and hold the cooperation.

It should be noted that, when the quantity of stabilizer blade 5 is four, four stabilizer blades 5 connect in the four terminal angles of roof 4 respectively, and the one end that roof 4 was kept away from to four stabilizer blades 5 all is connected with the hook piece 7 this moment, and the quantity of mounting hole 10 this moment is four and opens respectively in four terminal angles of bottom 1, so can strengthen the stability when roof 4 lid closes coil 1, can protect coil 1 to a certain extent. In addition, the reinforcing ribs 15 are integrally formed between each support leg 5 and the top plate 4, so that excessive deformation of the support legs 5 during clamping of the support legs 5 is reduced.

As shown in fig. 2 and 3, the hooking member 7 is an elastic buckle 9, the elastic buckle 9 is disposed at one end of the leg 5 far away from the top plate 4, and an elastic rod 8 is connected between the elastic buckle 9 and the leg 5. The mounting hole 10 includes a through hole 11 and a hooking hole 12, the through hole 11 is disposed along the thickness direction of the bottom cover 2, and the hooking hole 12 is formed on a wall of the through hole 11. When the elastic buckle 9 needs to be in hooking fit with the hooking hole 12, the elastic rod 8 and the elastic buckle 9 only need to extend into the perforation 11 until the elastic buckle 9 is aligned with the hooking hole 12, and the elastic buckle 9 is in hooking fit with the hooking hole 12 because the support leg 5, the elastic rod 8 and the elastic buckle 9 are elastic, and one side surface of the elastic rod 8, which is close to the hooking hole 12, is abutted against the wall of the perforation 11.

In order to facilitate the hooking piece 7 to enter the mounting hole 10, one end of the elastic buckle 9, which is far away from the supporting leg 5, is provided with a round corner, the surface of one side of the elastic buckle 9, which faces the hooking hole 12, is provided with a guide surface, and the guide surface is obliquely arranged from one end, which is far away from the supporting leg 5, to one end, which is close to the supporting leg 5, along the height direction of the elastic buckle 9, toward one end, which is far away from the elastic rod 8.

When the hooking member 7 enters the through hole 11, the guiding surface abuts against the hole 11, and if the hooking member 7 is forced, the hooking member 7 enters the through hole 11 under the guiding action of the guiding surface. In addition, the width of the supporting leg 5 needs to be greater than the width of the elastic rod 8 and smaller than the width of the hooking hole 11, when the elastic buckle 9 is hooked and matched with the hooking hole 12, at this time, one end of the supporting leg connection 6 connected with the hooking piece 7 is abutted against the bottom cover 2, so that the stability of the top plate 4 mounted on the bottom cover 2 is enhanced, and the top cover 3 is not easy to shake and fall off.

It should be noted that, when the device is mounted on the PCB board without a requirement of height limitation, the top cover 3 may be made of a metal material, specifically an aluminum material or an iron material, and meanwhile, a heat conducting member 7 is disposed between the coil 1 and the top plate 4, in this embodiment, the heat conducting member 7 is a heat conducting silica gel sheet, two surfaces of the heat conducting silica gel sheet are respectively contacted with the top plate 4 and the coil 1, and heat of a part of the coil 1 is transferred to the top cover through the heat conducting member 7, thereby increasing a heat dissipation area and a heat dissipation capacity of the coil 1, and improving a rated current of the device. In addition, in order to make the better cooperation paster equipment of roof 4 adsorb, the equal integrated into one piece in roof 4 both sides has sand grip 17, and the area of roof 4 can be increased in the setting of sand grip 17 to better auxiliary paster equipment adsorbs the device.

As shown in fig. 4 and 5, the bottom cover 2 is further provided with a plurality of through holes 17, the through holes 17 are provided to penetrate through the bottom cover 2 in the thickness direction thereof, and the number and positions of the through holes 17 can be set according to the type of the coil 1 and the number of the end pins 6 of the coil 1. The end pins 6 of the coil 1 pass through the through holes 17, so that the end pins 6 are quickly positioned, and the coil 1 is positioned on the bottom cover 2.

A hole wall of each through hole 17 is provided with a plurality of arc holes 14, the arc holes 14 penetrate through the bottom cover 2 along the thickness direction, when the end pins 6 penetrate through the through holes 17, adhesives can be injected into the arc holes 14, and the adhesives can be epoxy glue, so that the end pins 6 can be fixed by dispensing. In addition, the bottom of the bottom cover 2 is provided with a groove 16, one side of the bottom cover 2 is provided with a tin-penetrating opening, the tin-penetrating opening is communicated with the groove 16, and the groove 16 is communicated with the through hole 17 for tin penetration and ventilation. Specifically, the size of the grooves 16 may be set according to the area of tin penetration desired.

In this embodiment, the coil 1 is not directly provided with a metal pin, but a single wire with a diameter not smaller than 0.4mm is directly used as the end pin 6, and in order to be suitable for a high-power magnetic element, the diameter of the single wire is not smaller than 0.8mm, and the single wire can directly pass through the through hole 17.

Through the arrangement, the device is applicable to various magnetic components of through hole reflow soldering technology, and has strong universality, such as high-power annular common-mode inductance, high-power annular inductance, annular winding transformer and the like. As shown in fig. 6, as the toroidal common mode inductance, it is necessary to provide a spacer 13 between coils 1 having different windings for electrical isolation.

The magnetic component is specifically installed as follows:

firstly, winding a magnetic core in a ring shape or spirally winding by using a back-adhesive copper foil to form a required coil 1, and stripping insulating layers at the beginning end and the tail end of a lead in the process; then tin plating is performed at the beginning and the end of the lead, the specific way may be hot dip tin, and the tin plated part is used as an electrical connection part, thereby forming an end pin 6 of the coil 1; the tinned end pins 6 are passed through the through holes 17 while the end pins 6 are fixed by injecting an adhesive into the arcuate holes 14. Finally, the top cover 3 is mounted and covered on the coil 1 through the hooking piece 7 and the mounting hole 10, thereby completing the whole device mounting.

When the device is used, the device can be directly welded on a PCB, when the top cover 3 needs to be removed, only the auxiliary clamp is needed, the supporting legs 5 are clamped and pressed simultaneously to deform until the elastic buckle 9 is separated from the hooking hole 12, and the removal can be completed, so that the device is more convenient.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A magnetic component, comprising: coil and bottom, be provided with the top cap that is used for closing the coil on the bottom, the coil is located the top cap with between the bottom, the top cap includes roof and a plurality of root stabilizer blade, a plurality of the stabilizer blade with the roof is connected, a plurality of be provided with on the stabilizer blade and hold the piece, be provided with on the bottom with hold the mounting hole that corresponds, hold the piece with the mounting hole hook holds the cooperation, the coil with bottom fixed connection, be provided with a plurality of through-hole on the bottom, the tip pin of coil passes the through-hole and stretches out outside the through-hole.

2. The magnetic component of claim 1, wherein the hooking member is an elastic buckle, an elastic rod is connected between the elastic buckle and the supporting leg, a hole wall of the mounting hole is provided with a hooking hole, the elastic buckle and the elastic rod extend into the mounting hole, and when the elastic buckle is aligned with the hooking hole, the elastic buckle is matched with the hooking hole, and the elastic rod abuts against the hole wall of the mounting hole.

3. A magnetic component according to claim 2, wherein the elastic clasp is provided with a guiding surface, and the guiding surface is inclined.

4. The magnetic component of claim 1, wherein a groove is formed in the lower side of the bottom cover, a tin-permeable opening is formed in one side of the groove, and the groove is communicated with the tin-permeable opening.

5. The magnetic component of claim 1, wherein a plurality of arc-shaped holes are formed in the wall of the through hole.

6. A magnetic component as claimed in claim 1, wherein a heat conducting member is provided between the top plate and the coil.

7. A magnetic component according to claim 1, wherein the diameter of the end pins of the coil is not less than 0.8mm.

8. A magnetic component as claimed in claim 1, wherein a reinforcing rib is connected between the top plate and the leg.

9. A magnetic component as claimed in claim 6, wherein the end pins of the coil are secured at the through holes by adhesive bonding.