CN208111256U - The magnetically soft alloy formed iron core of low-frequency transformer - Google Patents

Abstract

The utility model relates to the technical fields of low-frequency transformer,Disclose the magnetically soft alloy formed iron core of low-frequency transformer,It is formed for magnetically soft alloy material by being sintered die casting,The magnetically soft alloy formed iron core of low-frequency transformer is in closed hoop,Form the wrapping post there are three being sequentially arranged side by side and for winding input coil and output winding,And the hollow region of closed form is enclosed between adjacent wrapping post,The magnetically soft alloy formed iron core of low-frequency transformer provided by the utility model,It is formed since iron core is magnetically soft alloy material by being sintered die casting,In this way,Instead of silicon steel sheet in the prior art,After input coil and output winding are wrapped on wrapping post,When iron core is in running order,The magnetic losses of itself can then be reduced,The phenomenon that being not in iron core leakage field,Improve the quality of iron core,Structure is simple,It is practical.

Description

The magnetically soft alloy formed iron core of low-frequency transformer

Technical field

The utility model relates to the integrated moldings of the magnetically soft alloy of the technical field of low-frequency transformer, especially low-frequency transformer Iron core.

Background technique

Low-frequency transformer is used to transmitting signal voltage and signal power, can also be achieved the impedance matching between circuit, to straight Galvanic electricity has buffer action.It is not distinguished on high frequency transformer and low-frequency transformer principle, but not due to the frequency of high and low frequency Together, iron core used in transformer is different, and low-frequency transformer generally uses the silicon steel sheet of high permeability.

Currently, by winding different groups of coil on iron core, it is different by the coil of wound around coil, so that input voltage It is different from output voltage, and then realize the effect of transformation.

In the prior art, the iron core of low-frequency transformer is typically all and is formed by stacking by several silicon steel sheets, in this way, being in When working condition, iron core is then easy to appear leakage field, thus, during iron core use, it is easy to appear serious magnetic flux leakage, Influence the quality of product.

Utility model content

The purpose of this utility model is to provide the magnetically soft alloy formed iron cores of low-frequency transformer, it is intended to solve existing In technology, the iron core of low-frequency transformer is formed by stacking using silicon steel sheet, is easy to appear leakage field, causes soft magnetism stator in use process In, there is the problem of serious leakage field.

The utility model is realized in this way the magnetically soft alloy formed iron core of low-frequency transformer, is magnetically soft alloy material Material is formed by being sintered die casting, and the magnetically soft alloy formed iron core of the low-frequency transformer is in closed hoop, and there are three formation It is sequentially arranged side by side and is used to wind the wrapping post of input coil and output winding, and is enclosed between adjacent wrapping post There is the hollow region of closed form.

Further, the peripheral surface of the wrapping post is formed with the score groove for winding input coil, the indentation Slot spirals along the axial direction of the wrapping post in the peripheral surface of the wrapping post.

Further, the peripheral surface of the wrapping post is covered with the oiliness paper of insulation, and the oiliness paper covers winding Input coil in the score groove.

Further, it is convexly equipped with respectively in two ends of the score groove for the fixed outside being connect with input coil First locating piece of electric wire.

Further, it is convexly equipped on two ends of the peripheral surface of the wrapping post and is connect for fixation with output winding External cable the second locating piece, second locating piece pass through the oiliness paper.

Further, the iron core includes two crossbeams, and two crossbeams are arranged in laterally parallel up and down, described in three Wrapping post is arranged between two crossbeams, is separately arranged in longitudinal；The both ends of the wrapping post are respectively formed with insertion Section, the crossbeam have the inner end towards the wrapping post, and the inner end of the wrapping post is equipped with jack, the wrapping post Two inserting paragraphs, which respectively correspond, to be inserted in the jack of two crossbeams.

Further, the diameter of the inserting paragraph is less than the diameter of the jack, and the periphery of the inserting paragraph is provided with more A spaced apart convex block, multiple convex blocks arrange that the convex block has outwardly disposed around the periphery of the inserting paragraph Bearing surface, the bearing surface of the convex block is connected to the inner sidewall of the jack.

Further, the bearing surface of the inserting paragraph is in arc surfaced.

Further, the opening of the jack is provided with adhesive layer, and the adhesive layer closes the opening of the jack, and At the cooperation for closing the inserting paragraph and the jack；The adhesive layer is looped around the peripheral surface of the wrapping post, and with institute It states and is formed with step between the peripheral surface of wrapping post.

Further, the magnetically soft alloy material is that zinc molybdenum-iron or ferrite or iron metal plate aluminium or iron sial etc. are one or more Nonmetallic materials are mixed.

Compared with prior art, the magnetically soft alloy formed iron core of low-frequency transformer provided by the utility model, due to Iron core is magnetically soft alloy material to be formed by being sintered die casting, in this way, instead of silicon steel sheet in the prior art, when input coil with And after output winding is wrapped on wrapping post, when iron core is in running order, then the magnetic losses of itself can be reduced, will not be gone out The phenomenon that existing iron core leakage field, improve the quality of iron core, of simple structure and strong practicability.

Detailed description of the invention

Fig. 1 is the main view signal of the magnetically soft alloy formed iron core of low-frequency transformer provided by the embodiment of the utility model Figure；

Fig. 2 is the schematic front view of wrapping post provided by the embodiment of the utility model.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

The realization of the utility model is described in detail below in conjunction with specific embodiment.

Referring to Fig.1 shown in -2, preferred embodiment is provided for the utility model.

The magnetically soft alloy formed iron core of low-frequency transformer provided by the utility model can be used in various types of In low-frequency transformer.

The magnetically soft alloy formed iron core of low-frequency transformer is that magnetically soft alloy material is formed by being sintered die casting, in closure Ring-type, there are three the wrapping posts 11 being sequentially arranged side by side for formation, and are enclosed closed form between adjacent wrapping post 11 Hollow region.In actual use, each phase input coil of input terminal is sequentially wound on three wrapping posts 11 respectively, output end Each phase output winding is sequentially wrapped in respectively on three wrapping posts 11, in this way, wound by input coil and output winding The difference for enclosing number, then may be implemented the transformation between input voltage and output voltage.

The magnetically soft alloy formed iron core of the low-frequency transformer of above-mentioned offer, since iron core is that magnetically soft alloy material passes through Sintering die casting forms, in this way, instead of silicon steel sheet in the prior art, when input coil and output winding are wrapped in wrapping post After on 11, when iron core is in running order, then the phenomenon that can reducing the magnetic losses of itself, be not in iron core leakage field, mention The quality of high iron core, of simple structure and strong practicability.

Wherein, magnetically soft alloy material can be zinc molybdenum-iron or ferrite or one or more non-gold such as iron metal plate aluminium or iron sial Belong to material to be mixed.

In the present embodiment, the peripheral surface of wrapping post 11 is formed with score groove, and score groove is wrapped wrapping post 11, along around The axial direction of terminal 11 is spiraled arrangement, and in actual use, input coil is wrapped in score groove, along spiraling for score groove Direction winding, in this way, by setting score groove, then it can be in order to input coil.

It is covered with the oiliness paper of insulation in the peripheral surface of wrapping post 11, which covers the periphery of entire wrapping post 11 Surface, and the input coil being wrapped in score groove is covered, in this way, after covering oiliness paper, then it can be in oiliness paper It is externally wrapped with output winding, in this way, the insulation between input coil and output winding then may be implemented.

In the present embodiment, it is convexly equipped with the first locating piece in two ends of score groove, in this way, input coil is wrapped in quarter After in trace slot, after external electric wire is connect with input coil, position directly can be carried out by the first locating piece and fixed, so that electric Stable connection between line and input coil.

It is convexly equipped with the second locating piece 113 on two ends of the peripheral surface of wrapping post 11, in this way, and the second locating piece 113 pass through oiliness paper, in this way, after output winding is wrapped in the peripheral surface of wrapping post 11, external electric wire and output winding After connection, position directly can be carried out by the second locating piece 113 and fixed, so that stable connection between electric wire and output winding.

In the present embodiment, iron core includes two crossbeams 12, and two crossbeams 12 are arranged in laterally parallel up and down, three wrapping posts 11 are arranged between two crossbeams 12, and in longitudinal separately parallel arrangement.The both ends of wrapping post 11 are respectively formed with inserting paragraph 112, crossbeam 12 has the inner end towards wrapping post 11, and jack is formed in the inner end of crossbeam 12, and 11 liang of wrapping post The inserting paragraph 112 at end, which respectively corresponds, to be inserted in the jack of two crossbeams 12, in this way, two crossbeams 12 and three wrapping posts 11 Combination forms " day of falling shape " shape.In this way, assembled again after iron core is divided into module block manufacture, for large-sized iron core, Convenient for manufacturing and assembling.

In the present embodiment, the diameter of inserting paragraph 112 is less than the diameter of jack, and is convexly equipped in the periphery of inserting paragraph 112 more A spaced apart convex block 111, multiple convex blocks 111 are arranged around the periphery of inserting paragraph 112, and convex block 111 has cloth outwardly The bearing surface set；After the inserting paragraph 112 of wrapping post 11 is inserted in the jack of crossbeam 12, the bearing surface of convex block 111 is connected to On the inner sidewall of jack, in this way, after inserting paragraph 112 is inserted in jack, in the bearing surface and jack by multiple convex blocks 111 It is abutted between side wall, realizes interval point contact, be inserted in jack in this way, facilitating insertion into section 112, and after insertion, pass through interval Point abuts, and avoids stuck state occur in assembling process, furthermore it is possible to which the magnetic line of force of the magnetic circuit in be formed in the core is more To concentrate in wrapping post 11.

As preferred embodiment, the bearing surface of inserting paragraph 112 is in arc surfaced, in this way, make the bearing surface of convex block 111 with Contact area is more extensive between the inner sidewall of jack.

In addition, the opening in the jack of the inner end of crossbeam 12 is provided with adhesive layer, when the inserting paragraph 112 of wrapping post 11 After being inserted into the jack of crossbeam 12, which has covered the opening of jack, will close at inserting paragraph 112 and socket cooperation.

In the present embodiment, after adhesive layer is sealed on the opening of jack, be looped around the peripheral surface of wrapping post 11, and with around It is formed with step between the peripheral surface of terminal 11, is respectively formed with opposite arrangement at the both ends of wrapping post 11 in this way, being equivalent to Step, in this way, can to the winding of input coil and output winding carry out end positioning.

Alternatively, entire iron core can also be integrally formed as other embodiments.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (9)

1. the magnetically soft alloy formed iron core of low-frequency transformer, which is characterized in that pass through sintering die casting for magnetically soft alloy material Form, the magnetically soft alloy formed iron core of the low-frequency transformer is in closed hoop, formed there are three being sequentially arranged side by side and For winding the wrapping post of input coil and output winding, and the hollow of closed form is enclosed between adjacent wrapping post Region.

2. the magnetically soft alloy formed iron core of low-frequency transformer as described in claim 1, which is characterized in that the wrapping post Peripheral surface be formed with the score groove for winding input coil, the score groove is spiraled along the axial direction of the wrapping post The peripheral surface of the wrapping post.

3. the magnetically soft alloy formed iron core of low-frequency transformer as claimed in claim 2, which is characterized in that the wrapping post Peripheral surface be covered with the oiliness paper of insulation, the oiliness paper covers the input coil being wrapped in the score groove.

4. the magnetically soft alloy formed iron core of low-frequency transformer as claimed in claim 3, which is characterized in that the score groove Two ends in be convexly equipped with the first locating piece for the fixed external cable connecting with input coil respectively.

5. the magnetically soft alloy formed iron core of low-frequency transformer as claimed in claim 4, which is characterized in that the wrapping post Peripheral surface two ends on be convexly equipped with the second locating piece for the fixed external cable connecting with output winding, it is described Second locating piece passes through the oiliness paper.

6. such as the magnetically soft alloy formed iron core of low-frequency transformer described in any one of claim 1 to 5, which is characterized in that The iron core includes two crossbeams, and two crossbeams are in laterally parallel arrangement, three wrapping posts are arranged in two up and down Between the crossbeam, separately arranged in longitudinal；The both ends of the wrapping post are respectively formed with inserting paragraph, and the crossbeam has court To the inner end of the wrapping post, the inner end of the wrapping post is equipped with jack, and two inserting paragraphs of the wrapping post are right respectively It should be inserted in the jack of two crossbeams.

7. the magnetically soft alloy formed iron core of low-frequency transformer as claimed in claim 6, which is characterized in that the inserting paragraph Diameter be less than the jack diameter, the periphery of the inserting paragraph is provided with multiple spaced apart convex blocks, multiple described convex Block arranges that the convex block has outwardly disposed bearing surface around the periphery of the inserting paragraph, and the bearing surface of the convex block supports Connect the inner sidewall in the jack.

8. the magnetically soft alloy formed iron core of low-frequency transformer as claimed in claim 7, which is characterized in that the inserting paragraph Bearing surface be in arc surfaced.

9. the magnetically soft alloy formed iron core of low-frequency transformer as claimed in claim 6, which is characterized in that the jack Opening is provided with adhesive layer, and the adhesive layer closes the opening of the jack, and closes the inserting paragraph and the jack At cooperation；The adhesive layer is looped around the peripheral surface of the wrapping post, and is formed between the peripheral surface of the wrapping post There is step.