CN207834057U - A kind of anticollision high frequency transformer that stability is good - Google Patents

Abstract

The utility model discloses a kind of anticollision high frequency transformer that stability is good comprising shell, lid close the upper cover of shell, the coil windings of the magnetic core set on enclosure interior and winding magnetic core；Iron plate is pasted in the inner walls, and housing sidewall is equipped with multiple thermal vias through setting, and through-hole corresponding with the thermal vias of housing sidewall is offered on iron plate；Anticollision layer is pasted with outside the upper cover, which is made of the fiberboard at least partially or fully covering the dimensionally stable of upper cover.The utility model can realize the effective protection to hull outside, when shell is collided, effective cushioning effect can be achieved in anticollision layer by the way that anticollision layer is arranged.

Description

A kind of anticollision high frequency transformer that stability is good

Technical field

The utility model is related to a kind of high frequency transformers that the efficient stability with anti-collision structure is good.

Background technology

In circuit, high frequency transformer is widely used element, and the function of high frequency transformer in circuit mainly has：Electricity Buckling is changed, impedance transformation, isolation and voltage stabilizing etc..

The shell of common high frequency transformer is mostly plastics or ceramic material on the market now, although these materials have well Insulation performance, but be easy it is damaged due to collision in use, breakage after high frequency transformer not only influence its performance, and And it can also threaten the safety of user.In addition, in high frequency transformer in use, the problem of due to magnetic core and loop construction The problem of will appear leakage field phenomenon, being urgent need to resolve.

Utility model content

Therefore, for above-mentioned problem, the utility model proposes a kind of good anticollision high frequency transformers of stability, existing It is arranged anticollision layer except some transformer cases, while also being become by the way that iron plate is arranged inside housings and improves existing high frequency The canoe of the primary and secondary coil of depressor, to solve the generation of leakage field phenomenon.

Specifically, the anticollision high frequency transformer that a kind of stability of the utility model is good, including shell, lid close shell The coil windings of upper cover, the magnetic core set on enclosure interior and winding magnetic core；Iron plate, and shell are pasted in the inner walls Side wall is equipped with multiple thermal vias through setting, and through-hole corresponding with the thermal vias of housing sidewall is offered on iron plate, To ensure the circulation and heat dissipation effect of heat dissipation channel；In addition, anticollision layer is pasted with outside the upper cover of the shell, the anticollision layer Fiberboard by least partially or fully covering the dimensionally stable of upper cover is constituted.Iron plate be in order to reduce the generation of leakage field phenomenon and Setting, after having pasted iron plate, further can be strapped in inside by stray field, prevent to external diffusion.

Wherein, anticollision layer is pasted onto by layers of two-sided outside upper cover, is smooth plane outside upper cover, layers of two-sided It is attached to outside upper cover on one side, another side pastes anticollision layer.

Further, heat dissipation channel is provided in shell, the heat dissipation channel is horizontally set between two groups of coil windings, And the heat dissipation channel both ends are connected with the thermal vias in housing sidewall, and the heat at coil winding position is distributed by interior To hull outside, internal heat is distributed rapidly, achievees the purpose that fast cooling.

Preferably, magnetic core is equipped with winding section, and coil windings include armature winding and secondary windings, and the armature winding twines The both sides of winding section are around in, secondary winding wound is equipped in the centre position of winding section among armature winding and secondary windings At least 3 layer insulatings.Armature winding is placed on innermost layer, each circle line length of the armature winding of transformer can be made so most Short, to which make entire winding is minimum with line, this effectively reduces the distribution capacity of armature winding itself.Armature winding and At least 3 layer insulatings namely armature winding are equipped among secondary windings around complete then plus secondary further around system around at least 3 layers of insulating layer Grade winding, can reduce the capacitance of distribution capacity between armature winding and secondary windings, also increase between primary and secondary Dielectric strength complies with the requirement of insulation pressure resistance.

Preferably, the insulating layer is realized using insulating tape, such as epoxy glue band.In addition, when setting insulating tape, Both ends exceed the edge of both sides armature winding.

Further, the magnetic core is I-shaped, and winding section is wrapped on the outer wall of magnetic core, and winding section is I-shaped Middle part.Armature winding and secondary windings are arranged at outside winding section, and two groups of coil windings are connected in parallel, the armature winding Directly around the home on winding section, secondary windings is located at outside armature winding and between armature winding and secondary windings by insulating layer Carry out electrical separation.

Preferably, the shell is aluminum shell.Further, there are four suspension columns for the lower part installation of the shell.It is located at Enclosure interior and include that two openings opposite upper frames and lower frame are provided with outside magnetic core, described in upper frame and lower frame surround Simultaneously pairing is connected as one magnetic core, and upper frame and lower frame are U-shaped structure.In addition, being respectively set on the outer wall of the shell There are upper binding post and lower binding post to be connected with coil windings, the upper binding post and lower binding post are located at the difference of housing exterior walls Side.

The utility model can realize the effective protection to hull outside by setting anticollision layer, when shell is collided, Effective anticollision buffering can be achieved in anticollision layer.In addition, in existing high frequency transformer, the leakage inductance of transformer be due to primary coil and Between secondary coil, between layers, between circle and circle magnetic flux do not couple completely and caused by.The utility model passes through in shell Iron plate is arranged in portion, and armature winding is set to the both ends of winding section, and secondary windings is set to the middle part of winding section, to So that entire secondary windings is enclosed in armature winding, coupling effect is enhanced, leakage inductance very little greatly reduces leakage field phenomenon Occur.In addition, the heat dissipation channel between two groups of coil windings is horizontally set on by enclosure interior, at coil winding position Heat is distributed by interior to hull outside, is rapidly distributed internal heat, is achieved the purpose that fast cooling.

Description of the drawings

Fig. 1 is the overall schematic of the anticollision high frequency transformer of the utility model；

Fig. 2 is the schematic diagram of the magnetic core of the utility model.

Specific implementation mode

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model Limitation.

In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot understand For limitations of the present invention.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition The concrete meaning of language in the present invention.

Referring to Fig. 1 and Fig. 2, the good anticollision high frequency transformer of a kind of stability of the utility model, including shell 100, Lid closes upper cover 101, the magnetic core 102 inside shell 100 and the coil windings for winding magnetic core 102 of shell 100；Shell Iron plate 108 is pasted on 100 inner walls, and 100 side wall of shell is equipped with multiple thermal vias through setting, is opened on iron plate 108 Equipped with through-hole corresponding with the thermal vias of 100 side wall of shell.Iron plate 108 is arranged to reduce the generation of leakage field phenomenon, After having pasted iron plate 108, can stray field be further strapped in inside, prevented to external diffusion.Meanwhile the utility model can also be further In conjunction with the operating magnetic field flux density Bm values for reducing the high frequency transformer, and using schemes such as the core materials of high magnetic permeability, to increase Add the beam magnetic energy power of magnetic core, and then further decreases the generation of leakage field phenomenon.

In addition, being pasted with anticollision layer 114 outside the upper cover 101 of shell 100, the anticollision layer 114 is by least partially or fully The fiberboard for covering the dimensionally stable of upper cover 101 is constituted.Anticollision layer 114 is pasted onto by layers of two-sided outside upper cover 101, upper cover 101 outsides are smooth plane, and layers of two-sided is attached on one side outside upper cover 101, and another side pastes anticollision layer 114.

Heat dissipation channel 107 is provided in shell 100, heat dissipation channel 107 is horizontally set between two groups of coil windings, and should 107 both ends of heat dissipation channel are connected with the through-hole of thermal vias and iron plate on 100 side wall of shell, by coil winding position The heat at place is distributed by interior to shell 100, is rapidly distributed internal heat, is achieved the purpose that fast cooling.

Magnetic core 102 is equipped with winding section 103, and coil windings include armature winding 104 and secondary windings 105, armature winding 104 are wound in the both sides of winding section 103, and secondary windings 105 is wound in the centre position of winding section 103, and 104 He of armature winding At least 3 layer insulatings 106 are equipped among secondary windings 105.Armature winding 104 is placed on innermost layer, transformer can be made in this way 104 each circle of armature winding is most short with line length, to make entire winding with line be it is minimum, this effectively reduces primary around 104 distribution capacity of itself of group.At least 3 layer insulatings 106 are equipped among armature winding 104 and secondary windings 105, namely primary Winding 104 is around complete, then adds the insulating layer around at least 3 layers further around secondary windings 105 processed, can reduce armature winding 104 and it is secondary around The capacitance of distribution capacity, also increases the dielectric strength between primary and secondary between group 105, complies with insulation pressure resistance It is required that.

Wherein, insulating layer 106 is realized using insulating tape, such as epoxy glue band.In addition, when setting insulating tape, two End exceeds the edge of both sides armature winding 104, to realize good insulation.

Magnetic core 102 is I-shaped, and winding section 103 is wrapped on the outer wall of magnetic core 102, and winding section 103 is I-shaped Middle part.Armature winding 104 and secondary windings 105 are arranged at outside winding section 103, and two groups of coil windings are connected in parallel, just Directly around the home on winding section 103, secondary windings 105 is located at outside armature winding 104 and in armature winding 104 grade winding 104 Electrical separation is carried out by insulating layer 106 between secondary windings 105.The high frequency transformer of the utility model, armature winding 104 are tight Paste winding section 103（Length is denoted as d）And coiling, the half of first coiling armature winding 104 during coiling, spacing distance w （1/3d<w<2/3d）, continue 104 remaining half of coiling armature winding, then insulating tape be close on armature winding 104 And it is arranged；Then secondary windings 105 is close to insulating tape coiling, and is wound in spacing distance w of two armature windings 104 It sets.Insulating tape plays the role of electric insulation to armature winding 104 and secondary windings 105.

Shell 100 is aluminum shell.There are four suspension columns 109 for the lower part installation of shell 100.Positioned at 100 inside of shell and wrap Containing two openings opposite upper frames 110 and lower frame 111 are provided with outside magnetic core 102, upper frame 110 and lower frame 111 surround Simultaneously pairing is connected as one magnetic core 102, and upper frame 110 and lower frame 111 are U-shaped structure.In addition, on the outer wall of shell 100 It is respectively arranged with binding post 112 and lower binding post 113, upper binding post 112 and lower binding post 113 are located at 100 outer wall of shell Not homonymy, and be connected with coil windings.

The high frequency transformer of the utility model, armature winding is close to winding section and coiling, the length of winding section are denoted as d, The half of first coiling armature winding during coiling, on winding section after spacing distance w, it is remaining to continue coiling armature winding Half, spacing distance w meets：1/3d<w<2/3d；Then insulating tape is close to be arranged on armature winding, and insulate Adhesive tape is at least arranged three layers；Then secondary windings 105 is close to insulating tape coiling, and is wound in the interval of two armature windings At position（Positioned at the position of spacing distance w）.Insulating tape plays the role of electric insulation to armature winding and secondary windings.

Although specifically showing and describing the utility model in conjunction with preferred embodiment, those skilled in the art answers This is understood, in the spirit and scope for not departing from the utility model defined by the appended claims, in form and details On the utility model can be made a variety of changes, be the scope of protection of the utility model.

Claims (9)

1. a kind of good anticollision high frequency transformer of stability, it is characterised in that：The upper cover of shell is closed including shell, lid, is set to The magnetic core of enclosure interior and the coil windings for winding magnetic core；

Iron plate is pasted in the inner walls, and housing sidewall is equipped with multiple thermal vias through setting, is opened on iron plate Equipped with through-hole corresponding with the thermal vias of housing sidewall；

Anticollision layer is pasted with outside the upper cover, the anticollision layer is by least partially or fully covering the fiber of the dimensionally stable of upper cover Plate is constituted.

2. the good anticollision high frequency transformer of stability according to claim 1, it is characterised in that：Setting in the shell There are heat dissipation channel, the heat dissipation channel to be horizontally set between two groups of coil windings, and the heat dissipation channel both ends and housing sidewall On thermal vias be connected.

3. the good anticollision high frequency transformer of stability according to claim 1 or 2, it is characterised in that：On the magnetic core Equipped with winding section, coil windings include armature winding and secondary windings, and the armature winding is wound in the both sides of winding section, secondary Winding is wound in the centre position of winding section, and at least 3 layer insulatings are equipped among armature winding and secondary windings.

4. the good anticollision high frequency transformer of stability according to claim 3, it is characterised in that：The insulating layer uses Epoxy glue band is realized.

5. the good anticollision high frequency transformer of stability according to claim 3, it is characterised in that：The magnetic core is " work " Font, winding section are wrapped on the outer wall of magnetic core, and winding section is the middle part of I-shaped.

6. the good anticollision high frequency transformer of stability according to claim 1 or 2, it is characterised in that：The shell is Aluminum shell.

7. the good anticollision high frequency transformer of stability according to claim 1 or 2, it is characterised in that：The shell There are four suspension columns for lower part installation.

8. the good anticollision high frequency transformer of stability according to claim 1 or 2, it is characterised in that：In the shell It is arranged there are two opening opposite upper frame and lower frame, upper frame and the lower frame encirclement magnetic core and pairing are connected as one Body, upper frame and lower frame are U-shaped structure.

9. the good anticollision high frequency transformer of stability according to claim 1 or 2, it is characterised in that：The shell The upper binding post being connect with coil windings and lower binding post are provided on outer wall, binding post and lower binding post are located at shell on this The not homonymy of external wall.