CN205723142U

CN205723142U - A kind of EFD type magnetic core bias blahk structure

Info

Publication number: CN205723142U
Application number: CN201620581106.XU
Authority: CN
Inventors: 颜茂山; 李前军; 陈维兆; 袁翔; 邰阿强; 王晓彬; 蒋柏平; 刘广泽
Original assignee: Taizhou Maoxiang Electronic Equipment & Materials Co Ltd
Current assignee: Taizhou Maoxiang Electronic Equipment & Materials Co Ltd
Priority date: 2016-06-13
Filing date: 2016-06-13
Publication date: 2016-11-23
Anticipated expiration: 2026-06-13

Abstract

This utility model relates to a kind of EFD type magnetic core bias blahk structure, including eccentric blahk structure, eccentric blahk structure includes stem stem, limit lower limb and base, stem stem is located at side, base center, limit lower limb is located at base two ends, the leg section position, limit of base bottom is respectively equipped with groove I and groove II, and base bottom is provided with groove III and groove IV.This utility model compared with prior art has the advantage that the problem on deformation that can effectively solve EFD type magnetic core, and the product qualified rate of EFD type magnetic core is greatly improved.

Description

A kind of EFD type magnetic core bias blahk structure

Technical field

This utility model relates to a kind of EFD type magnetic core bias blahk structure, belongs to technical field of electronic products.

Background technology

EFD type magnetic core has relatively low structure height and higher power transmission density, is current plane electronic transformer The magnetic core of the more selection of device, due to its eccentric structure, is extremely easily deformed that (situation of deformation is as it is shown in figure 1, regard main In figure, the difference of a and a ' is up to more than 0.5mm, there is also in flexural deformation as shown in phantom in Figure 2 and Fig. 3 shown in dotted line Stem stem deformation etc.), the assembling affecting the quality of magnetic core and client uses, so manufacturing process difficulty is relatively big, utilizes conventional Magnetic core design and manufacture technology cannot solve the state of its various deformation, needs to be researched and solved from the structure of blank designs.

Shown in conventional design below figure 4-9 of EFD type blank, wherein the method for designing of conventional 1 (Fig. 4-6) is most basic Design, the bottom of blank is that (see Fig. 5, this kind designs the density domination for each several part during EFD type blank molding in smooth design Requirement the highest, and in practical operation be difficult to controlled well, the product qualified rate of magnetic core is the lowest.Conventional 2 (Fig. 7-9) set Meter is to add a groove bottom blank, and the Fig. 8 in particular location such as conventional 2 show: away from center, stem stem side, length For stem stem length (i.e. C size=A size), width be magnetic core width deduct stem stem width (i.e. D size=B size B ' chi Very little), degree of depth F is about 0.1mm.Stem stem metaboly shown in Fig. 2 is made moderate progress, but cannot improve a's and a ' Difference reaches more than 0.5mm and diastrophic phenomenon.

Therefore, it should provide a kind of new technical scheme to solve the problems referred to above.

Summary of the invention

This utility model provides a kind of EFD type magnetic core bias blahk structure.

For reaching above-mentioned purpose, the technical solution adopted in the utility model is:

A kind of EFD type magnetic core bias blahk structure, including eccentric blahk structure, eccentric blahk structure includes stem stem, limit lower limb And base, stem stem is located at side, base center, and limit lower limb is located at base two ends, and the leg section position, limit of base bottom is respectively equipped with recessed Groove I and groove II, base bottom is provided with groove III and groove IV.

The relevant content of technique scheme is explained as follows:

In technique scheme, groove III and groove IV connect formation T shape.

Further technical scheme, length F of groove I and groove II is equal to limit lower limb width E, groove I and the width of groove II Degree is equal to the width B of eccentric blahk structure, and degree of depth G of groove I and groove II is 0.03-0.06mm.

Preferably, length C of groove III is equal with stem stem length A, and the width D of groove III is eccentric blahk structure width B Deducting stem stem width B ', degree of depth I of groove III is 0.08-0.12mm.

Preferably, length H of groove IV is the half of stem stem length A, the width that width L dimension is stem stem of groove IV B ', the degree of depth of groove IV is 0.17-0.22mm.

Owing to technique scheme is used, this utility model compared with prior art has the advantage that

Can effectively solve the problem on deformation of EFD type magnetic core, the finished product that EFD type magnetic core is greatly improved is qualified Rate.

Accompanying drawing explanation

Accompanying drawing 1 is the schematic diagram of prior art.

Accompanying drawing 2 is the upward view of Fig. 1.

Accompanying drawing 3 is the top view of Fig. 1.

Accompanying drawing 4 is the schematic diagram of prior art routine 1.

Accompanying drawing 5 is the upward view of Fig. 4.

Accompanying drawing 6 is the top view of Fig. 4.

Accompanying drawing 7 is the schematic diagram of prior art routine 2.

Accompanying drawing 8 is the upward view of Fig. 7.

Accompanying drawing 9 is the top view of Fig. 7.

Accompanying drawing 10 is this utility model schematic diagram.

Accompanying drawing 11 is the upward view of Figure 10.

Accompanying drawing 12 is the top view of Figure 10.

In the figures above: 1, stem stem；2, limit lower limb；3, base；4, groove I；5, groove II；6, groove III；7, groove IV.

Detailed description of the invention

Below in conjunction with the accompanying drawings and this utility model is further described by embodiment:

Embodiment one:

As shown in figs. 1-12, a kind of EFD type magnetic core bias blahk structure of the present utility model, including eccentric blahk structure, Eccentric blahk structure includes stem stem 1, limit lower limb 2 and base 3, and stem stem 1 is located at side, base 3 center, and limit lower limb 2 is located at base 3 two ends, Limit lower limb 2 portion bottom base 3 is respectively equipped with groove I 4 and groove II 5, is provided with groove III 6 and groove bottom base 3 IV 7, groove III 6 and groove IV 7 connect formation T shape, and length F of groove I 4 and groove II 5 is equal to limit lower limb 2 width E, groove I 4 With the width B that the width of groove II 5 is equal to eccentric blahk structure, degree of depth G of groove I 4 and groove II 5 is 0.03-0.06mm, recessed Length C of groove III 6 is equal with stem stem 1 length A, and the width D of groove III 6 deducts stem stem 1 width for eccentric blahk structure width B B ', degree of depth I of groove III 6 is 0.08-0.12mm, and length H of groove IV 7 is the half of stem stem 1 length A, the width of groove IV 7 L dimension is the width B ' of stem stem 1, and the degree of depth of groove IV 7 is 0.17-0.22mm, can effectively solve the deformation of EFD type magnetic core Problem, is greatly improved the product qualified rate of EFD type magnetic core.

Above-described embodiment only for technology of the present utility model design and feature are described, its object is to allow and is familiar with technique Personage will appreciate that content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this. All according to this utility model spirit made equivalence change or modify, all should contain protection domain of the present utility model it In.

Claims

1. an EFD type magnetic core bias blahk structure, including eccentric blahk structure, it is characterised in that: described eccentric blahk structure Including stem stem, limit lower limb and base, described stem stem is located at side, base center, and described limit lower limb is located at base two ends, at the bottom of described base The leg section position, limit in portion is respectively equipped with groove I and groove II, and described base bottom is provided with groove III and groove IV.

A kind of EFD type magnetic core bias blahk structure the most according to claim 1, it is characterised in that: described groove III and recessed Groove IV connects formation T shape.

A kind of EFD type magnetic core bias blahk structure the most according to claim 1, it is characterised in that: described groove I and groove Length F of II is equal to limit lower limb width E, and the width of described groove I and groove II is equal to the width B of eccentric blahk structure, described recessed Degree of depth G of groove I and groove II is 0.03-0.06mm.

A kind of EFD type magnetic core bias blahk structure the most according to claim 1, it is characterised in that: the length of described groove III C is equal with stem stem length A for degree, and the width D of described groove III deducts stem stem width B ' for eccentric blahk structure width B, described recessed Degree of depth I of groove III is 0.08-0.12mm.

A kind of EFD type magnetic core bias blahk structure the most according to claim 1, it is characterised in that: the length of described groove IV Degree H is the half of stem stem length A, and the width B ' that width L dimension is stem stem of described groove IV, the degree of depth of described groove IV is 0.17-0.22mm。