CN209216712U - Magnet assembly and its power supply unit - Google Patents

Abstract

The utility model discloses a kind of magnet assemblies, it includes two magnetic cores and bobbin winder bracket, the magnetic core includes engaging frame and magnetic core column, and the engaging frame includes bottom wall and bends inwards the side wall extended to form along at least two sidewalls of bottom wall, and the magnetic core column is inwardly convexly equipped in the centre of the bottom wall；The bobbin winder bracket is equipped with the winding slot for wound around coil, offers the interstitial hole of perforation among it；The magnetic core column of two magnetic cores protrudes into the interstitial hole from two sides above and below the bobbin winder bracket and contacts in the interstitial hole, the engaging frame of two magnetic cores is connected together with the bobbin winder bracket respectively and contacts in the centre of the bobbin winder bracket, so as to form the magnetic loop for being located at winding slot periphery between the magnetic core column and side wall；The magnet assembly of the utility model is effectively reduced volume and meets flux demand；In addition, the invention also discloses a kind of power supply units with above-mentioned magnet assembly.

Description

Magnet assembly and its power supply unit

Technical field

Volume can be effectively reduced the utility model relates to a kind of transformer technology field more particularly to one kind but also formed Closed magnetic loop is supplied with magnet assembly that meet flux demand and that power density is high and the power supply with the magnet assembly Device.

Background technique

The raising of requirement with electric utility increasingly to high frequency, high power density, with magnet assembly product by Gradually with miniaturization, therefore the volume of magnet assembly needs become smaller and smaller, to meet the miniature requirement of product.Conventional Magnet assembly includes magnetic core, electric conductor and bobbin winder bracket, and traditional magnetic core, electric conductor and bobbin winder bracket about respectively account for the magnet assembly The one third of overall volume.However, actually make magnet assembly have electric utility electric property part only with magnetic core And the effects of electric conductor is associated, and bobbin winder bracket is only used as a middleware to play support, insulation.

In order to reduce the volume of magnet assembly to meet the needs of miniaturization, existing way is by omitting bobbin winder bracket or flat Graduation bobbin winder bracket is to realize the reduction of magnet assembly volume.However, the magnet assembly for omitting bobbin winder bracket needs to solve coiling and leads The problems such as insulation of electric body and magnetic core, the above problem not can solve yet so far.And it is limited by the prior art, by flat Change the mode of bobbin winder bracket to reduce the volume of magnet assembly, fails that magnetic flux is effectively ensured while solving capacity issue always Size causes the power density of product lower to meet production requirement.

Therefore, a kind of magnet assembly that volume is effectively reduced and meets flux demand and the electricity with the magnet assembly are needed Source power supply unit.

Utility model content

The purpose of the utility model is to provide a kind of magnet assembly that volume is effectively reduced and meets flux demand and have The power supply unit of the magnet assembly.

To achieve the goals above, the utility model discloses a kind of magnet assemblies comprising two magnetic cores and bobbin winder bracket, institute Stating magnetic core includes engaging frame and magnetic core column, and the engaging frame includes bottom wall and bends inwards along at least two sidewalls of bottom wall and extend shape At side wall, the magnetic core column is inwardly convexly equipped in the centre of the bottom wall；The bobbin winder bracket be equipped with for wound around coil around Wire casing offers the interstitial hole of perforation among it；The magnetic core column of two magnetic cores protrudes into described from two sides above and below the bobbin winder bracket Interstitial hole simultaneously contacts in the interstitial hole, and the engaging frame of two magnetic cores is connected together with the bobbin winder bracket respectively and described The intermediate contact of bobbin winder bracket, so as to form the magnetic loop for being located at winding slot periphery between the magnetic core column and side wall.

Compared with prior art, the utility model opens up interstitial hole on bobbin winder bracket, magnetic core protrude into interstitial hole and wrap up around The two sides of coil holder, to form magnetic loop in winding slot periphery, structure is simple, convenient for flattening bobbin winder bracket to reduce magnet assembly Volume, to realize the miniaturization of power supply unit.

Preferably, the bobbin winder bracket length between 36mm between 38.5mm, width between 24.5mm between 34.5mm, Height is between 16mm between 20mm.

Preferably, being additionally provided with several welding columns of connection coiling end on the bobbin winder bracket.

Preferably, the distance of two adjacent welding columns of bobbin winder bracket is between 5mm between 8mm.

Preferably, the two sides up and down of the bobbin winder bracket have extended outward to form flange, the left and right of the lower side flange respectively Two sides are respectively equipped with cylinder manifold, and the welding column is set on the cylinder manifold, and the cylinder manifold offers several vertical along the vertical direction To the conducting wire locating slot of setting, and several conducting wire locating slots are progressively longer from both ends to centre, progressively longer from both ends to centre Conducting wire locating slot facilitate layout of the coiling on cylinder manifold.

Preferably, the two sides up and down of the bobbin winder bracket have extended outward to form flange, the right side point of two flanges respectively Not She You cylinder manifold, the welding column be set to the cylinder manifold on, and if offered on the inside of the cylinder manifold capable person's coiling from around Wire casing guides the conducting wire locating slot to welding column.

Preferably, the slot bottom position that the conducting wire locating slot closes on the winding slot is oblique, facilitate coiling along leading Line locating slot introduces at welding column.

Preferably, the magnetic core bottom wall offers a groove with corresponding position on the left of the flange, convenient for grabbing when assembling Take magnetic core.

Preferably, the sensibility reciprocal of the magnet assembly is between 200uH between 950uH.

Preferably, each bobbin winder bracket includes a winding slot or more than two winding slots being spaced apart from each other, more than two phases The winding slot being mutually spaced is arranged along the bobbin winder bracket up and down direction and the adjacent winding slot is spaced apart by spacer lug.It should Scheme makes can be by setting multiple groups winding slot on a bobbin winder bracket.

Preferably, the bobbin winder bracket includes coiling ontology and around irdome, the winding slot and spacer lug be set to it is described around On line ontology, the adjacent winding slot is spaced apart by the spacer lug that two 1 fixed spacings are arranged, and two spacer lugs Between be formed with card slot, the strip being equipped in irdome with the card slot snap fit, it is described around irdome cover in it is described around Line sheet is external and is connected together by the strip and card slot with the coiling ontology, and the magnetic core engages company around irdome with described It connects, can effectively protect bobbin winder bracket around irdome.

Preferably, accommodation groove is formed between the side wall and the magnetic core column of the engaging frame, above and below the bobbin winder bracket End has extended outward to form flange respectively, and the magnetic core column of two magnetic cores protrudes into the interstitial hole from two sides above and below the bobbin winder bracket When, the flange engaging is installed in the accommodation groove, so that magnetic component structure is stablized.

Preferably, the two sides up and down of the bobbin winder bracket are respectively formed with the engaging across the front and back two opposite sides of the flange Slot, the magnetic core columns of two magnetic cores from when the interstitial hole is protruded into two sides above and below the bobbin winder bracket, the bottom wall of the engaging frame with The engaging slot is connected together, so that magnetic component structure is stablized.

Preferably, the upper and lower ends of the bobbin winder bracket have extended outward to form flange respectively, cross is convexly equipped on the flange Two division walls of across front and back two opposite sides and fixed spacing setting, form engaging slot between two division walls.

Preferably, two division walls are symmetrically disposed on the flange, and each division wall is in certain angle by two The straight flange of degree forms, so as to be gradually increased among the width of the engaging slot to both sides, the program can effectively prevent magnetic core around It is slid back and forth on coil holder.

Preferably, the position that the front and rear sides of the bobbin winder bracket upper flange are located at outside the division wall be convexly equipped with respectively with The division wall connected vertically two reinforces side, and two reinforcement sides on the left of the upper flange connect with the both ends of the division wall And the metallic channel connecting with winding slot is offered on the flange between two reinforcement sides, two on the right side of the upper flange reinforce side Connect respectively with the middle position of two straight flange of division wall, and the outside of reinforcing sides two and two straight flanges in division wall is later half Two lead notches are formed between part.

Correspondingly, the invention also discloses a kind of power supply units including above-mentioned magnet assembly.

Preferably, the output power of the power supply unit is between 150W between 250W.

Detailed description of the invention

Fig. 1 is the schematic diagram of the power supply unit of the utility model.

Fig. 2 is the structural schematic diagram of the magnet assembly of first embodiment.

Fig. 3 is the decomposition diagram of Fig. 2.

Fig. 4 is the decomposition diagram when magnet assembly of first embodiment is overlooked.

Fig. 5 is the front view of the bobbin winder bracket of first embodiment.

Fig. 6 is the top view of Fig. 2.

Fig. 7 is the structural schematic diagram of the magnet assembly of second embodiment.

Fig. 8 is the decomposition diagram of Fig. 7.

Fig. 9 is the decomposition diagram when magnet assembly of second embodiment is looked up.

Figure 10 is the front view of the bobbin winder bracket of second embodiment.

Specific embodiment

For technology contents, the construction feature, the objects and the effects that the utility model is described in detail, below in conjunction with implementation Mode simultaneously cooperates attached drawing to be explained in detail.

Refering to Figure 1, the power supply unit 1000 of the utility model includes magnet assembly 100,200, the magnetism group Part 100,200 is particularly suitable for output power between 150W to the small-power power power supply unit 1000 between 250W, magnet assembly 100,200 small in size and it is able to satisfy flux demand, suitable for being assemblied in miniaturized products.The magnet assembly 100,200 can be with It is used as transformer or inductor, to expand use occasion.Below by the tool of the magnet assembly 100,200 to the utility model Body structure is described in detail.

First embodiment

It please refers to shown in Fig. 2-Fig. 6, the magnet assembly 100 of the present embodiment includes two magnetic cores 110 and bobbin winder bracket 120, magnetic core 110 be to have magnetic magnet, and bobbin winder bracket 120 is made of insulating materials such as plastics.Wherein, magnetic core 110 includes engaging Frame 111 and magnetic core column 112, engaging frame 111 and magnetic core column 112 are integrally formed setting, certainly, engage frame 111 and magnetic core column 112 Can also be linked into an integrated entity formula structure by way of discrete assembling.Frame 111 is engaged including bottom wall 1111 and along bottom wall 1111 At least two sidewalls 1112 bend inwards the side wall 1112 extended to form, and magnetic core column 112 is inwardly convexly equipped in the centre of bottom wall 1111, this The engaging frame 111 of embodiment includes two sidewalls 1112, and two sidewalls 1112 are distributed along the left and right sides of engaging frame 111.Bobbin winder bracket 120 It is equipped with the winding slot 121 for being used for wound around coil (not shown), the interstitial hole 1211 of perforation is offered among it, in this Between hole 1211 protruded into for magnetic core column 112.The magnetic core column 112 of the present embodiment is set as cylindrical body, the interstitial hole 1211 be set as with The round hole of cylinder mates, certainly, magnetic core column 112 and interstitial hole 1211 can be set to such as rectangular, polygon, ellipse The other shapes such as shape, in the case where guaranteeing that magnetic core column 112 can extend into interstitial hole 1211, magnetic core column 112 and interstitial hole 1211 Concrete shape it is unrestricted.The magnetic core column 112 of two magnetic cores 110 from about 120 two sides of bobbin winder bracket protrude into interstitial hole 1211 and Contact in interstitial hole 1211, so that two magnetic core columns 112 are connected in the interstitial hole 1211 of bobbin winder bracket 120, two magnetic cores 110 Engaging frame 111 is connected together with bobbin winder bracket 120 respectively and contacts in the middle position of bobbin winder bracket 120, so that two engaging frames 111 are connected in the middle position of the front and rear sides of bobbin winder bracket 120, since magnetic core column 112 is an integral structure with frame 111 is engaged, Magnetic core column 112 with engage the magnetic collective effect of frame 111 in bobbin winder bracket 120, so as to be formed between magnetic core column 112 and side wall 1112 Positioned at the magnetic loop of 121 periphery of winding slot.

The length of the bobbin winder bracket 120 of the present embodiment is set as between 36mm between 38.5mm, and width is set as between 24.5mm To when between 34.5mm, being highly set as between 16mm between 20mm, capable of guaranteeing to meet maximum limit in the case where flux demand The flattening bobbin winder bracket 120 of degree, to realize the miniaturization of magnet assembly 100 to greatest extent.In order to adapt to the magnetic of miniaturization Property component 100, the type and circle number of coiling are rationally set so that the sensibility reciprocal of magnet assembly 100 between 200uH between 950uH, To most effectively promote magnetic flux under the size of above-mentioned bobbin winder bracket 120.

It please refers to shown in Fig. 3-Fig. 5, several welding columns of connection coiling end is additionally provided on the bobbin winder bracket 120 of the present embodiment 122, between 5mm between 8mm, coiling is wound on winding slot 121 and forms coil the distance of two adjacent welding columns 122, is wound in The coiling end of winding slot 121 connects corresponding welding column 122 after the extraction of winding slot 121, for magnet assembly 100 and external world's electricity Connection.

Further, draw and avoid the coiling after drawing staggeredly miscellaneous from winding slot 121 for the ease of the end of coiling Disorderly, the two sides up and down of the bobbin winder bracket 120 of the present embodiment have extended outward to form flange 123, the left and right two of lower side flange 123 respectively Side is respectively equipped with cylinder manifold 124, and welding column 122 is set on cylinder manifold 124, it is preferred that welding column 122 is perpendicularly fixed at cylinder manifold 124 Outside simultaneously extends outwardly, in order to weld coiling on welding column 122.Cylinder manifold 124 offers several longitudinal directions along the vertical direction and sets The conducting wire locating slot 1241 set, and several conducting wire locating slots 1241 are progressively longer from both ends to centre, coiling end is via conducting wire Locating slot 1241 is oriented to and draws winding slot 121, effectively prevent influencing beauty due to the coiling drawn simultaneously is mixed and disorderly because interlocking, and have Effect avoids leading to magnetic disturbance because interlocking mixed and disorderly coiling, to facilitate layout of the coiling on cylinder manifold 124.Conducting wire positioning Slot 1241 is progressively longer from both ends to centre, so that different coiling ends can have in adjacent conducting wire locating slot 1241 Level is drawn, convenient for the welding and later maintenance of coiling.

Please refer to shown in Fig. 2-Fig. 6, in order to realize being fixed for magnetic core 110 and bobbin winder bracket 120, the present embodiment it is convex It is convexly equipped with two division walls 125 across front and back two opposite sides and fixed spacing setting on edge 123, is formed between two division walls 125 Engaging slot 1251, the engaging area of the engaging slot 1251 is slightly less than the bottom area of bottom wall 1111, so that bottom wall 1111 can It is sticked between two division walls 125.Specifically, two division walls 125 are symmetrically disposed on flange 123, and each division wall 125 by Two straight flanges 1252 at an angle forms, so as to be gradually increased among the width of engaging slot 1251 to both sides, the program can have Effect prevents magnetic core 110 from sliding back and forth on bobbin winder bracket 120.Preferably, the angle of two straight flanges 1252 of the present embodiment is set in obtuse angle It sets, so that two division walls 125 form the engaging slot 1251 with enough contacts area on flange 123, so as to the bottom of by The size of wall 1111 is done greatly, to meet flux demand.When magnetic core column 112 is fully inserted into interstitial hole 1211, the bottom wall of frame 111 is engaged 1111 are fastened between two division walls 125 in the upper surface for being connected to engaging slot 1251 being bonded, bottom wall 1111, thus real Existing magnetic core 110 is fixed with bobbin winder bracket 120.Further, the side wall 1112 and magnetic core column of the engaging frame 111 of the present embodiment The accommodation groove 113 being embedded in for flange 123 is formed between 112, so that magnetic core 110 is in epsilon-type structure, the magnetic core of two magnetic cores 110 When column 112 protrudes into interstitial hole 1211 from about 120 two sides of bobbin winder bracket, flange 123 is embedded in and is fastened in accommodation groove 113, To which further magnetic core 110 is fixed on bobbin winder bracket 120, magnetic core 110 is avoided to damage due to surprisingly falling off.

Further, when bottom wall 1111 is sticked in engaging slot 1251 in order to prevent, division wall 125 is because by bottom wall 1111 Side margins squeeze and damage, the front and rear sides of 120 upper flange 123 of bobbin winder bracket of the present embodiment are located at outside division wall 125 Position be convexly equipped with respectively it is as shown in Figure 2 reinforce side 126 with division wall 125 connected vertically two, to strengthen division wall 125 Hardness.Specifically, the two of 123 left side of upper flange reinforce connecting while 126 with the both ends of division wall 125 and when two reinforce 126 Between flange 123 on offer the metallic channel 127 connecting with winding slot 121, coiling can be convex from upside by metallic channel 127 Edge 123 is drawn outside magnet assembly 100.The two of the right side of upper flange 123 reinforce sides 126 respectively with 125 liang of straight flanges 1252 of division wall Middle position connect, and formed between the outside on two reinforcement sides 126 and the latter half of two straight flanges 1252 in division wall 125 Two lead notches 128 towards lead notch 128 and are inserted into lead notch 128 after winding slot 121 is drawn in coiling end, can incite somebody to action Coiling end is hidden on lead notch 128 to stay standby subsequent patching operations.

Second embodiment

It please refers to shown in Fig. 7-Figure 10, the magnet assembly 200 of the present embodiment includes two magnetic cores 210 and bobbin winder bracket 220, magnetic Core 210 is to have magnetic magnet, and bobbin winder bracket 220 is made of insulating materials such as plastics.Wherein, magnetic core 210 includes card Close frame 211 and magnetic core column 212, the setting that is integrally formed of engaging frame 211 and magnetic core column 212 engages frame 211 and magnetic core column certainly 212 can also be linked into an integrated entity formula structure by way of discrete assembling.Frame 211 is engaged including bottom wall 2111 and along bottom wall 2111 At least two sidewalls 2112 bend inwards the side wall 2112 extended to form, magnetic core column 212 is inwardly convexly equipped in the centre of bottom wall 2111, The engaging frame 211 of the present embodiment includes two sidewalls 2112, and two sidewalls 2112 are distributed along the left and right sides of engaging frame 211.Bobbin winder bracket 220 are equipped at least two winding slots 221 for wound around coil (not shown) being spaced apart from each other, and offer perforation among it Interstitial hole 2211, which protrudes into for magnetic core column 212, sets that there are two winding slots on the bobbin winder bracket 220 of the present embodiment 221, certainly, according to actual needs, the quantity of winding slot 221 can be set to three, four, five or six etc., same Winding multiple groups coil on bobbin winder bracket 220 to adapt to different applications, therefore does not limit the quantity of winding slot 221 herein It is fixed.The magnetic core column 212 of the present embodiment is set as square body, which is set as the square hole with rectangular mates, Certainly, magnetic core column 212 and interstitial hole 2211 can be set to the other shapes such as circle, polygon, ellipse, guarantee magnetic In the case that stem 212 can extend into interstitial hole 2211, the concrete shape of magnetic core column 212 and interstitial hole 2211 is unrestricted.Two The magnetic core column 212 of magnetic core 210 protrudes into interstitial hole 2211 from about 220 two sides of bobbin winder bracket and contacts in interstitial hole 2211, thus So that two magnetic core columns 212 are connected in the interstitial hole 2211 of bobbin winder bracket 220, the engaging frame 211 of two magnetic cores 210 respectively with bobbin winder bracket 220 are connected together and contact in the middle position of bobbin winder bracket 220, so that two engaging frames 211 are in the front and back of bobbin winder bracket 220 two The middle position of side is connected to, since magnetic core column 212 is an integral structure with frame 211 is engaged, magnetic core column 212 with engage frame 211 Magnetic collective effect is in bobbin winder bracket 220, so as to form the magnetic for being located at 221 periphery of winding slot between magnetic core column 212 and side wall 2112 Circuit.

The length of the bobbin winder bracket 220 of the present embodiment is set as between 36mm between 38.5mm, and width is set as between 24.5mm To when between 34.5mm, being highly set as between 16mm between 20mm, capable of guaranteeing to meet maximum limit in the case where flux demand The flattening bobbin winder bracket 220 of degree, to realize the miniaturization of magnet assembly 200 to greatest extent.In order to adapt to small-sized magnetism The type and circle number of coiling is rationally arranged in component 200 so that the sensibility reciprocal of magnet assembly 200 between 200uH between 950uH, from And the most effective promotion magnetic flux under the size of above-mentioned bobbin winder bracket 220.

Please refer to shown in Fig. 8, be additionally provided on the bobbin winder bracket 220 of the present embodiment connection coiling end several welding columns 222, two Between 5mm between 8mm, coiling is wound on winding slot 221 and forms coil the distance of adjacent welding column 222, is wound in winding slot The end of 221 coiling connects corresponding welding column 222 after the extraction of winding slot 221 respectively, for magnet assembly 200 and external world's electricity Connection.

It please refers to shown in Fig. 8-Figure 10, further, draws and avoid from winding slot 221 for the ease of coiling end Coiling after extraction is staggeredly mixed and disorderly, and the two sides up and down of the bobbin winder bracket 220 of the present embodiment have extended outward to form flange 223 respectively, The right side of two flanges 223 is respectively equipped with cylinder manifold 224, and welding column 222 is set on cylinder manifold 224, it is preferred that welding column 222 is vertically solid Due to 224 outside of cylinder manifold and extend outwardly, in order to weld coiling on welding column 222.If the inside of cylinder manifold 224 offers Capable person's coiling is guided from winding slot 221 to the conducting wire locating slot 2241 from welding column 222.Coiling end is via conducting wire locating slot 2241 It is oriented to and is drawn winding slot 221, effectively prevent the coiling drawn simultaneously staggeredly mixed and disorderly and influences beautiful.Further, conducting wire is fixed The slot bottom position that position slot 2241 closes on winding slot 221 is oblique, and coiling is facilitated to introduce welding column 222 along conducting wire locating slot 2241 Place, and prevent coiling when drawing winding slot 221, due to the slot bottom position of coiling fitting winding slot 221 is drawn in smaller angle Overflexing damage.Further, 210 bottom wall 2111 of magnetic core position corresponding with 223 left side of flange offers a groove 21111, coiling draw winding slot 221 after be pierced by groove 21111 with enter conducting wire locating slot 2241, for subsequent welding operate, And the setting of groove 21111 prevents magnetic core 210 from falling off because of skidding convenient for grabbing magnetic core when assembling.

Please continue to refer to shown in Fig. 8-Figure 10, two winding slots 221 of the present embodiment are arranged along 220 up and down direction of bobbin winder bracket Column and adjacent winding slot 221 are realized by spacer lug 225 to be separated, so that bobbin winder bracket 220 being capable of independent two groups of winding Coil.Bobbin winder bracket 220 include coiling ontology 226 and be inverted U shape structure around irdome 227, winding slot 221 and spacer lug 225 On coiling ontology 226, it is preferred that spacer lug 225 is arranged along the front-rear direction of coiling ontology 226 and is located on coiling sheet The medium position of body 226, so that coiling ontology 226 is separated to form the identical winding slot 221 of two sizes by spacer lug 225, Of course, it is possible to according to actual needs setting spacer lug 225 in the position of coiling ontology 226, with formed two it is various sizes of around Wire casing 221, to meet different production needs.Specifically, adjacent winding slot 221 passes through the spacer lug that two 1 fixed spacings are arranged 225 are spaced apart, and are formed with card slot 2251 between two spacer lugs 225, are equipped with to engage with card slot 2251 in irdome 227 and match The strip 2271 of conjunction is covered in around irdome 227 outside coiling ontology 226 and by strip 2271 and card slot 2251 and coiling ontology 226 It is connected together, magnetic core 210 is connected together with around irdome 227, thus by around 227 effective protection bobbin winder bracket 220 of irdome.

Further, it is formed between the side wall 2112 and magnetic core column 212 of the engaging frame 211 of the present embodiment as shown in Figure 9 Accommodation groove 2113 so that magnetic core 210 is in epsilon-type structure, the flange 223 of spacer lug 225 and its up and down direction either side it Between formed winding slot 221.When the magnetic core column 212 of two magnetic cores 210 protrudes into interstitial hole 2211 from about 220 two sides of bobbin winder bracket, flange 223 engagings are installed in accommodation groove 2113.The distance between two sidewalls 2112 of magnetic core 210 are set as being slightly less than around irdome 227 Thickness along the longitudinal direction, is provide with and after the coiling ontology 226 that is connected together around irdome 227, and the magnetic core column 212 of magnetic core 210 is stretched Enter interstitial hole 2211, the two sidewalls 2112 of magnetic core 210 are clamped around irdome 227 jointly, to realize magnetic core 210 and around irdome 227 It is connected together, to realize the assembly of the magnet assembly 200 of the present embodiment.For better fixed magnetic core 210, the present embodiment around The two sides up and down of coil holder 220 are respectively formed with the engaging slot 228 across the front and back two opposite sides of flange 223, the magnetic of two magnetic cores 210 When stem 212 protrudes into interstitial hole 2211 from about 220 two sides of bobbin winder bracket, the bottom wall 2111 of engaging frame 211 engages with engaging slot 228 Connection cooperates the two sidewalls 2112 of magnetic core 210 to clamp jointly around irdome 227, to realize the steady of magnetic core 210 and bobbin winder bracket 220 Fixed connection.

In conjunction with shown in Fig. 1-Figure 10, the magnet assembly 100,200 of the power supply unit 1000 of the utility model includes two magnetic Core 110,210 and bobbin winder bracket 120,220, magnetic core 110,210 include engaging frame 111,211 and magnetic core column 112,212, bobbin winder bracket 120,220 winding slots 121,221 equipped with wound around coil and the intermediate interstitial hole 1211,2211 for offering perforation, two magnetic cores 110,210 magnetic core column 112,212 from bobbin winder bracket 120, about 220 two sides protrudes into interstitial hole 1211,2211 and in interstitial hole 1211, in 2211 when contact, the engaging frame 111,211 of two magnetic cores 110,210 be connected together respectively with bobbin winder bracket 120,220 and The intermediate contact of bobbin winder bracket 120,220, magnetic core 110,210 are attached by way of engaging with bobbin winder bracket 120,220, are convenient for Flattening bobbin winder bracket 120,220 is to reduce the volume of magnet assembly 100,200, to realize the small-sized of power supply unit 1000 Change；After magnetic core 110,210 engages with bobbin winder bracket 120,220, is formed and be located between magnetic core column 112,212 and side wall 1112,2112 The magnetic loop of winding slot 121,221 peripheries, the space in winding slot 121,221 are not influenced by magnetic core, are made it possible to according to reality Production needs flexible setting winding turns, so that the magnetic flux of magnet assembly 100,200 meets production requirement.

It above disclosure is merely preferred embodiments of the utility model, certainly cannot be practical new to limit this with this The interest field of type, therefore equivalent variations made according to the patent scope of the utility model still belong to the utility model and are covered Range.

Claims (17)

1. a kind of magnet assembly, it is characterised in that: include:

Two magnetic cores, including engaging frame and magnetic core column, the engaging frame include bottom wall and bend inwards along at least two sidewalls of bottom wall The side wall extended to form, the magnetic core column are inwardly convexly equipped in the centre of the bottom wall；

Bobbin winder bracket, which is provided with the winding slot for wound around coil, offer the interstitial hole of perforation among it；

The magnetic core column of two magnetic cores protrudes into the interstitial hole from two sides above and below the bobbin winder bracket and contacts in the interstitial hole, The engaging frame of two magnetic cores is connected together with the bobbin winder bracket respectively and contacts in the centre of the bobbin winder bracket, so that the magnetic The magnetic loop for being located at winding slot periphery is formed between stem and side wall；Wherein,

The sensibility reciprocal of the magnet assembly is between 200uH between 950uH.

2. magnet assembly as described in claim 1, it is characterised in that: the bobbin winder bracket length between 36mm to 38.5mm it Between, width between 24.5mm between 34.5mm, highly between 16mm between 20mm.

3. magnet assembly as described in claim 1, it is characterised in that: if being additionally provided with connection coiling end on the bobbin winder bracket Dry welding column.

4. magnet assembly as claimed in claim 3, it is characterised in that: the distance of the adjacent welding column of the two of bobbin winder bracket between 5mm extremely Between 8mm.

5. magnet assembly as claimed in claim 3, it is characterised in that: the two sides up and down of the bobbin winder bracket extend outwardly shape respectively At there is flange, the lower side flange is respectively arranged on the left side and the right side cylinder manifold, and the welding column is set on the cylinder manifold, the remittance Flowing plate offers several longitudinally disposed conducting wire locating slots along the vertical direction, and several conducting wire locating slots from both ends to it is intermediate gradually It is elongated.

6. magnet assembly as claimed in claim 3, it is characterised in that: the two sides up and down of the bobbin winder bracket extend outwardly shape respectively At there is flange, cylinder manifold is respectively equipped on the right side of two flanges, the welding column is set on the cylinder manifold, and the cylinder manifold If inside offer capable person's coiling and guide conducting wire locating slot to from welding column from winding slot.

7. magnet assembly as claimed in claim 6, it is characterised in that: the conducting wire locating slot closes on the slot bottom of the winding slot Position is oblique.

8. magnet assembly as claimed in claim 6, it is characterised in that: magnetic core bottom wall position corresponding with the flange left side It sets and offers a groove.

9. magnet assembly as described in claim 1, it is characterised in that: each bobbin winder bracket includes a winding slot or two or more The winding slot being spaced apart from each other, the winding slots that are spaced apart from each other of two or more arrange along the bobbin winder bracket up and down direction and it is adjacent described in around Wire casing is spaced apart by spacer lug.

10. magnet assembly as claimed in claim 9, it is characterised in that: the bobbin winder bracket includes coiling ontology and around irdome, institute It states winding slot and spacer lug is set on the coiling ontology, the adjacent winding slot is convex by the interval that two 1 fixed spacings are arranged Edge is spaced apart, and card slot is formed between two spacer lugs, described to be equipped with and the card slot snap fit in irdome Strip, it is described that around irdome to cover in the coiling sheet external and engage company with the coiling ontology by the strip and card slot It connects, the magnetic core is connected together with described around irdome.

11. magnet assembly as described in claim 1, it is characterised in that: between the side wall and the magnetic core column of the engaging frame It is formed with accommodation groove, the upper and lower side of the bobbin winder bracket has extended outward to form flange respectively, and the magnetic core columns of two magnetic cores is from institute Stating bobbin winder bracket, when protruding into the interstitial hole, the flange engaging is installed in the accommodation groove for two sides up and down.

12. magnet assembly as claimed in claim 6, it is characterised in that: the two sides up and down of the bobbin winder bracket are respectively formed with cross The magnetic core column of the engaging slot of front and back two opposite sides across the flange, two magnetic cores protrudes into institute from two sides above and below the bobbin winder bracket When stating interstitial hole, the bottom wall of the engaging frame is connected together with the engaging slot.

13. magnet assembly as described in claim 1, it is characterised in that: the upper and lower ends of the bobbin winder bracket extend outwardly respectively It is formed with flange, two division walls across front and back two opposite sides and fixed spacing setting are convexly equipped on the flange, between two is described Engaging slot is formed between partition wall.

14. magnet assembly as claimed in claim 13, it is characterised in that: two division walls are symmetrically disposed on the flange On, and each division wall is made of two straight flanges at an angle so that among the width of the engaging slot to both sides by It is cumulative big.

15. magnet assembly as claimed in claim 14, it is characterised in that: the front and rear sides of the bobbin winder bracket upper flange are located at Position outside the division wall is convexly equipped with respectively reinforces side with the division wall connected vertically two, on the left of the upper flange Two reinforce connecting at the both ends of the division wall and when two reinforce between flange on offer leading of connecting with winding slot Wire casing, two reinforcement sides on the right side of the upper flange connect with the middle position of two straight flange of division wall respectively, and two plus Two lead notches are formed between the latter half of two straight flanges in the outside on strong side and division wall.

16. a kind of power supply unit, it is characterised in that: including magnet assembly, appoint in the magnet assembly such as claim 1-15 One Xiang Suoshu.

17. power supply unit as claimed in claim 16, it is characterised in that: the output power of the power supply unit between 150W is between 250W.