CN202615967U

CN202615967U - Magnetic closure type power inductor

Info

Publication number: CN202615967U
Application number: CN 201220309511
Authority: CN
Inventors: 晋家贵; 罗维伦; 郑应华
Original assignee: High-New Jin Da Electronic Science And Technology Co Ltd In Kweiyang
Current assignee: High-New Jin Da Electronic Science And Technology Co Ltd In Kweiyang
Priority date: 2012-06-29
Filing date: 2012-06-29
Publication date: 2012-12-19
Anticipated expiration: 2022-06-29

Abstract

The utility model relates to a magnetic closure type power inductor. The magnetic closure type power inductor comprises a drum type iron core (1); a varnished wire (2) is wound on the drum type iron core (1); an encapsulation casing (3) and a base (4) are arranged outside the drum type iron core (1) and the varnished wire (2); a through-hole (5) is formed on the end face of the encapsulation casing (3); the upper end face of the drum type iron core (1) is located in the through-hole (5) and is level with the upper end face of the encapsulation casing (3); and 3-4 glue positioning points (6) are coated in an adjacent region of the inner wall of the through-hole (5) and the drum type iron core (1). The magnetic closure type power inductor adopts a glue filling manner to connect a gap formed between the encapsulation casing and the drum type iron core, therefore, a purpose of fixing the iron core is obtained, and meanwhile, use level of the glue is saved, and influence of the expanded glue on the inductor is avoided; and in addition, heat dissipation of the inductor is ensured.

Description

The closed magnetic power inductor

Technical field

The utility model relates to a kind of closed magnetic power inductor, belongs to the inductors technique field.

Background technology

Inductor is to be converted into magnetic energy to electric energy and the element that stores.The similar of inductor is in transformer, but has only a winding.Inductor has certain inductance, and it only stops change in current.If there is not electric current to pass through in the inductor, then it stops electric current to flow through it; If there is electric current to flow through it, when then circuit breaks off it will to attempt to keep electric current constant.

Existing inductor is for increasing the magnetic disturbance ability; Outside coil, be equipped with the magnetic screen shell, behind the installation shell, for guaranteeing the volume of inductor; Offer through hole in magnetic screen shell upper surface; The upper surface of inductor iron core is flushed with the magnetic screen shell, and simultaneously for guaranteeing the stability of iron core, between the via regions of magnetic screen shell and iron core slit, injecting has glue; Existing glue injection system is full notes mode (promptly between both slits, being coated with full glue), and there is following problem in this sealing mode: 1, the glue use amount is big; 2 inductor heat-sinking capabilities are relatively poor; 3, inductor very easily expands at work adstante febre fluid sealant, is prone to the original paper in the inductor is caused damage.

Summary of the invention

The technical problem that the utility model will solve is: a kind of Inductive component of preventing electromagnetic interference is provided, can overcomes the deficiency of prior art.

The technical scheme that the utility model adopted is: the closed magnetic power inductor; It comprises the drum type iron core; On the drum type iron core, be wound with enamelled wire; Outside drum type iron core and enamelled wire, be provided with package casing and base, offer through hole, the drum type iron core at the end face of package casing) the upper surface be positioned at through hole and flush with the upper surface of package casing; Inwall and drum type iron core adjacent area at through hole scribble 3-4 place glue anchor point.

The quantity of glue anchor point is 4.

Compare with prior art: the utility model adopts the mode of some glue to be connected the slit between package casing and the drum type iron core, can satisfy the purpose of secured core like this, can practice thrift the glue consumption again, avoid the glue expanded by heating that inductor is brought influence; Can also guarantee simultaneously the thermal diffusivity of inductor.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the vertical view of Fig. 1.

Embodiment

Embodiment 1: as shown in Figure 1; On drum type iron core 1, be wound with enamelled wire 2; The twining amount of enamelled wire 2 accounts for 80% of drum type iron core 1 total twining amount; At outer package casing 3 and the base 4 of being provided with of drum type iron core 1 and enamelled wire 2, offer through hole 5 at the end face of package casing 3, the upper surface of drum type iron core 1 is positioned at through hole 5 and flushes with the upper surface of package casing 3; Inwall and drum type iron core 1 adjacent area at through hole 5 scribble 3-4 place glue anchor point 6, preferred 4 (as shown in Figure 2).

Claims

1. closed magnetic power inductor; It comprises drum type iron core (1); On drum type iron core (1), be wound with enamelled wire (2); Outside drum type iron core (1) and enamelled wire (2), be provided with package casing (3) and base (4), it is characterized in that being: the end face at package casing (3) offers through hole (5), and the upper surface of drum type iron core (1) is positioned at through hole (5) and flushes with the upper surface of package casing (3); Inwall and drum type iron core (1) adjacent area at through hole (5) scribble 3-4 place glue anchor point (6).

2. closed magnetic power inductor according to claim 1 is characterized in that: the quantity of glue anchor point (6) is 4.