CN2519987Y - Package structure improvement for transformer or choke coil - Google Patents

Abstract

The utility model relates to an improvement for the sealing structure of transformer or choke coil. The sealing group comprises a shell body and a seat body which are made of plastic. The utility model is characterized in that a sealing part of which the both sides thereof separately provide a relatively symmetrical convex part is arranged on the shell body. A connection hole is arranged on the convex part. An extension part which is corresponding to the seat body is bended at both sides of the seat body. An assembly connection part which is assembled on the convex part of the shell body is formed between the extension part and the seat body. A connection hole which is corresponding to the connection hole on the seat body convex part is arranged on the seat body. The transformer or the choke coil are fixed on the shell by the connection hole to form an insulation state between the transformer or the sealing group of the choke coil and the metal shell body. Therefore, even though the phenomenon of high voltage creepage occurs, the normal operation of the other surrounding parts can not be influenced. The utility model is designed for preventing high voltage creepage phenomenon and ensuring the requirements of high voltage creepage test is coincident.

Description

The encapsulating structure improvement of transformer or choking winding

Technical field:

The utility model is the improvement of the encapsulating structure of relevant a kind of transformer or choking winding, refers to a kind of encapsulating structure that prevents the high pressure leaky and meet the high pressure leakage tests especially.

Background technology:

Known, after transformer or choking winding complete at present, all can on the silicon steel sheet of transformer or choking winding, encapsulate one by the made package group of metal, this package group is made of a housing and a pedestal, after package group is packaged on transformer or choking winding, the encapsulating structure of transformer or choking winding is made on the metal chassis that is installed on each electrical equipment.

Because the metal chassis of electrical equipment is to belong to a kind of ground state in design, and after the package group and casing winding of transformer or choking winding, can form a short-circuit condition.In case in coil groups and package group during in secondary operations dress group, if the assembler is careless, easily allow the adhesive plaster (or insulation belongs to) that is coated on the coil break, form silicon steel sheet and contact with coil.In use,, will have influence on the normal operation of spare part on every side or destroyed, cause electrical equipment to use and dangerous if when transformer or choking winding produce a high pressure leaky.

Summary of the invention:

Main purpose of the present utility model, be to solve above-mentioned shortcoming, avoid shortcoming to exist, when the utility model is installed on the metal chassis of each electrical equipment at transformer or choking winding, allow the package group and the metal chassis of transformer or choking winding form a state of insulation, when the high pressure leaky takes place, can not have influence on the normal operation of spare part on every side, preventing the generation of high pressure leaky, and guarantee to meet the requirement of high pressure leakage tests.

For reaching above-mentioned purpose, package group of the present utility model is made of a housing and a pedestal, and this housing and pedestal are made by plastic cement material, have a sealed portion on the aforesaid housing, have a through hole in this protuberance; In addition, be bent with in the pedestal both sides one with the corresponding extension of pedestal, form the group connecting part of the aforementioned protuberance of a winding between this extension and pedestal, on pedestal, have the through hole of a corresponding above-mentioned through hole again, can pass through through hole for locking part, and transformer or choking winding are fixed on the casing.

Description of drawings:

The 1st figure is the utility model embodiment 1 structural representation.

The 2nd figure is the decomposing schematic representation for the 1st figure.

The 3rd figure is that the 1st figure is in A-A section cross-sectional schematic.

The 4th figure is the user mode schematic diagram of the utility model.

The 5th figure is embodiment 2 structural representations of the present utility model.

Relevant the utility model describes in detail and technology contents, now cooperates graphic being described as follows:

Seeing also Fig. 1 and Fig. 2, is stereoscopic of the present utility model and decomposing schematic representation.As shown in the figure: the encapsulating structure improvement of transformer of the present utility model or choking winding, include: the package group 2 that a coil groups 1 and is coated on coil groups 1 outside constitutes, because aforementioned package group 2 is that a plastic matter is made, when installing and using, can be isolated with the metal chassis (not shown), preventing the high pressure leaky, and guarantee to meet the requirement of high pressure leakage tests.

Above-mentioned mentioned coil groups 1 is made of the coil 12 that a plural groups silicon steel sheet 11 and is wound on this silicon steel sheet 11, in order to produce voltage output;

This package group 2 is made of a housing 21 and a pedestal 22 that is packaged on the above-mentioned silicon steel sheet 11, this housing 21 and pedestal 22 are made by plastic cement material, has a sealed portion 211 on the aforesaid housing 21, respectively be extended with a symmetrical protuberance 212 in sealed portion 211 both sides, respectively have a through hole 213 on this protuberance 212; In addition, be bent with in pedestal 22 both sides one with pedestal 22 corresponding extensions 221,22 group connecting parts 222 that form the aforementioned protuberance 212 of a winding of this extension 221 and pedestal, the through hole 223 that on pedestal 22, has a corresponding above-mentioned through hole 213 again, can pass through through hole 213,223 for the locking part (not shown), and transformer or choking winding are fixed on the casing.Can prevent the high pressure leaky thereby constitute one, and meet the requirement of high pressure leakage tests.

Another architecture advances scheme of the utility model is to be designed to barb type at the protuberance 212 that sealed portion 211 is extended make the group connecting part of pedestal 22 save (seeing embodiment 2 for details) further, the manufacturing of the utility model package group 2, also the coil groups 1 that completes can be put to mould, utilize injection molding method to organize 2 and directly be packaged on the coil groups, make housing 21 and pedestal 22 form one-body molded dress.Embodiment:

Embodiment 1, sees also shown in the 3rd, 4 figure, and Fig. 3,4 is respectively Fig. 1 and analyses and observe and the user mode schematic diagram at A-A position section.As shown in the figure: after the silicon steel sheet 11 of coil groups 1 and coil 12 complete, the sealed portion 211 of housing 21 is packaged on the silicon steel sheet 11, the protuberance 212 that sealed portion 211 is extended then is connected in the group connecting part 222 of pedestal 22, after aforementioned protuberance 212 and group connecting part 222 windings, allow through hole 213 envelopes on the protuberance 212 should be in the through hole on the pedestal 22 223, after utilizing locking part 3 to pass aforementioned two through hole 213,223, can be locked on the metal chassis 4.Because package group 2 is that a plastic material is made, when transformer or choking winding are locked in casing 4, promptly form a state of isolation, to prevent when the high pressure leaky takes place with casing 4, can not have influence on the normal operation of parts on every side, more can meet the standard of high pressure leakage tests simultaneously.

Embodiment 2, as shown in Figure 5: present embodiment and above-mentioned mentioned structure are roughly the same, different being in the protuberance 212 that above-mentioned sealed portion 211 is extended be designed to barb 212 ', and the group connecting part of pedestal 22 can save, can be for another through hole 224 of above-mentioned barb 212 ' snapping and have additional one on pedestal 22.Be packaged on the silicon steel sheet 11 of coil groups 2 at housing 21 after, this barb 212 ' can directly be buckled on the through hole 224, allows the producer when assembling, saves time more, economizes operation.

Claims (2)

1, the improvement of the encapsulating structure of a kind of transformer or choking winding, package group comprise a housing and a pedestal, it is characterized in that:

(1). have a sealed portion (211) on the housing (21), respectively prolong this sealed portion (211) both sides a symmetrical protuberance (212), and a through hole (213) is arranged on the protuberance;

(2). pedestal (22) go up both sides be bent with one with the corresponding extension of pedestal (22) (221), the group connecting part (222) of the protuberance (212) between this extension (221) and pedestal (22) on the formation one winding housing (21);

(3). the through hole (223) having the through hole (213) on the corresponding pedestal protuberance on the pedestal (22) is fixed on transformer or choking winding on the casing by through hole (213), (223).

2, the encapsulating structure of transformer according to claim 1 or choking winding improvement, it is characterized in that: this protuberance (212) is a barb (212 '), and on pedestal (22), have one with the through hole (224) of barb (212 ') snapping.

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