CN210925717U - Small micro-power horizontal encapsulated transformer - Google Patents

Abstract

The utility model belongs to the technical field of the transformer is used, specifically disclose horizontal embedment transformer of miniwatt, including shell, winding skeleton, iron core mounting hole, primary winding, secondary, primary separate keep off, two sets of primary output pin, two sets of secondary pin, two sets of skeletons divide wire casing, transformer core and polyurethane casting glue. The beneficial effects of the utility model reside in that: 1. the mini maximum size of the appearance is 23.5mm 22.5mm 20.5mm, and the device is suitable for occasions with narrow space and low power requirements; 2. compared with the traditional transformer, the primary and secondary windings are separated by the primary and secondary baffles, the voltage resistance of the primary and secondary windings is better, and the voltage resistance can reach more than AC 3700V; 3. the production process of the traditional transformer is complex, the primary and secondary windings of the transformer with the structure can be produced by full-automatic equipment, and the production efficiency is greatly improved under the condition of the same personnel allocation; 4. compared with the E, I type silicon steel sheet, the F type silicon steel sheet is used in the transformer iron core part, so that the assembly is convenient, the quality is stable and the efficiency is improved.

Description

Small micro-power horizontal encapsulated transformer

Technical Field

The utility model belongs to the technical field of the transformer is used, concretely relates to horizontal embedment transformer of miniwatt.

Background

A Transformer (Transformer) is a device for changing an ac voltage by using the principle of electromagnetic induction, and its main components are a primary coil, a secondary coil, and a silicon steel core (magnetic core). The main functions are as follows: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), and the like, and can be classified into: power transformers and special transformers (furnace transformers, rectification transformers, power frequency test transformers, voltage regulators, mining transformers, audio transformers, intermediate frequency transformers, high frequency transformers, impact transformers, instrument transformers, electronic transformers, reactors, mutual inductors, etc.).

The transformer has the primary purpose of ensuring the safety of people, and the main functions of the transformer are voltage reduction and isolation, wherein the voltage reduction is to reduce high voltage (such as 220V commercial power) to be within a safe voltage, and the isolation is also to isolate the voltage to ground of a live wire. The transformers in the market are also divided into a bare type transformer and a sealed type transformer, a silicon steel sheet of the bare type transformer is exposed outside, a coil only wraps two layers of adhesive tapes, insulation between a primary layer and a secondary layer is difficult to guarantee, an outer shell is exposed, and once electric leakage occurs, electric shock accidents are easy to cause.

Epoxy potting the transformer solves this problem very well, the transformer being encased in a plastic housing and impregnated with epoxy. The housing has no charged part at all, and the epoxy resin can penetrate into the gap of the transformer, the dielectric strength of the resin is much higher than that of air, 3000V can puncture 1mm of air, but tens of thousands of volts are needed to puncture 1mm of epoxy resin.

The electrical strength of the encapsulated transformer is higher than that of a bare transformer by one grade, and encapsulation modes are also classified into normal-pressure encapsulation and vacuum encapsulation. Normal pressure embedment is exactly in pouring into the shell with epoxy under normal atmospheric pressure condition, and the vacuum embedment then needs professional equipment to pour into the shell with epoxy under vacuum environment, and relative normal pressure embedment, the inside air can be taken out in the vacuum embedment, and the finished product does not have the bubble.

The transformer of the prior encapsulation transformer has the advantages that the initial and secondary winding start and end ends assembled on the initial stage winding groove and the separation rail are mutually contacted to cause short circuit risk, the safety and the quality stability of the transformer are poor, the transformer of the traditional structure is large in size, and the requirements (the requirement for installing a small-size transformer) on special occasions can not be met.

Therefore, based on the above problems, the utility model provides a horizontal embedment transformer of little micropower.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a horizontal embedment transformer of little micropower, its project organization is reasonable, and two sets of skeleton separated time groove designs that increase between two sets of primary output pins, two sets of secondary pins have improved the security and the quality stability of transformer, and have avoidd that the primary winding begins and the finish end touches the risk of taking place the short circuit each other, more are favorable to the automated production of transformer.

The technical scheme is as follows: the utility model provides a horizontal embedment transformer of miniwatt, which comprises an outer shell, and set up the bobbin in the shell, and set up the iron core mounting hole in bobbin, and set up the primary winding on bobbin, secondary, and set up on bobbin and be located primary, primary between the secondary separates and keeps off, and set up two sets of primary output pin at bobbin both ends, two sets of secondary pin, and set up respectively at two sets of primary output pin, two sets of skeleton branch wire casing between two sets of secondary pins, and through iron core mounting hole installation and respectively with bobbin, primary, secondary, primary separates the transformer core who keeps off the connection, and with bobbin, primary, secondary, primary separates and keeps off, the polyurethane casting glue of transformer core seal in the shell.

According to the technical scheme, the small micro-power horizontal encapsulated transformer further comprises a strip-shaped limiting protrusion arranged on the outer wall of the bottom surface of the shell.

In this embodiment, the housing has a dimension of 23.5mm 22.5mm 20.5 mm.

Compared with the prior art, the utility model discloses a horizontal embedment transformer of little micropower's beneficial effect lies in: 1. the mini maximum size of the external shape is 23.5mm 22.5mm 20.5mm (length, width and height), and the device is suitable for occasions with narrow space and low power requirements; 2. compared with the traditional transformer, the primary and secondary windings are separated by the primary and secondary baffles, the voltage resistance of the primary and secondary windings is better, and the voltage resistance can reach more than AC 3700V; 3. the production process of the traditional transformer is complex, the primary and secondary windings of the transformer with the structure can be produced by full-automatic equipment, and the production efficiency is greatly improved under the condition of the same personnel allocation; 4. compared with the E, I type silicon steel sheet, the F type silicon steel sheet is used in the transformer iron core part, so that the assembly is convenient, the quality is stable and the efficiency is improved.

Drawings

Fig. 1 and 4 are schematic views of an assembly structure of the small micro-power horizontal potting transformer of the present invention;

fig. 2 and fig. 3 are schematic views of the assembly structure of the small micro-power horizontal potting transformer of the present invention;

fig. 5 is a schematic structural diagram of the housing of the horizontal potting transformer with small micropower.

Detailed Description

The invention will be further elucidated with reference to the drawings and the specific embodiments.

The small micro-power horizontal encapsulated transformer shown in figures 1, 2, 3, 4 and 5 comprises a shell 5, a bobbin 1 arranged in the shell 5, iron core mounting holes 1-4 arranged in the bobbin 1, a primary winding 2, a secondary winding 3 arranged on the bobbin 1, primary and secondary baffles 1-5 arranged on the bobbin 1 and positioned between the primary and secondary windings 2, 3, two groups of primary output pins 1-1 and two groups of secondary pins 1-2 arranged at two ends of the bobbin 1, two groups of bobbin distributing grooves 1-3 respectively arranged between the two groups of primary output pins 1-1 and two groups of secondary pins 1-2, and a transformer iron core 4 arranged through the iron core mounting holes 1-4 and respectively connected with the bobbin 1, the primary and secondary windings 2, the secondary winding 3 and the primary baffles 1-5, and the polyurethane pouring sealant 6 is used for sealing the winding framework 1, the primary winding 2, the secondary winding 3, the primary and secondary baffles 1-5 and the transformer iron core 4 in the shell 5.

Preferably, the small micro-power horizontal encapsulated transformer further comprises a strip-shaped limiting bulge 7 arranged on the outer wall of the bottom surface of the shell 5, so that the installation and the positioning are facilitated; and the dimensions of the housing 5 are 23.5mm 22.5mm 20.5 mm.

The small micro-power horizontal encapsulated transformer with the structure has the advantages that 1, the market demand is refined, the transformer is designed in a miniaturized mode, and the power range of the transformer is 0.35W to 0.6W; 2. the winding framework design is optimized, the primary winding 2, the secondary winding 3 and the primary and secondary separating blocks 1-5 are separated, the thickness of the primary and secondary separating blocks 1-5 is 1mm, the primary winding 2 and the secondary winding 3 are wound separately, the initial and ending wire ends of the winding are wound through proper slot positions of the two groups of framework wire dividing slots 1-3 and then led out to the two groups of primary output pins 1-1 and the two groups of secondary pins 1-2, and the framework L-shaped pin design facilitates automatic production; 3. the transformer is integrally arranged on the shell 5, the polyurethane pouring sealant 6 is used for vacuum pouring and sealing, the polyurethane pouring sealant is used for vacuum pouring and sealing of the transformer main body, compared with epoxy resin, the stress of the transformer is small, the product performance is more stable when the transformer works at high and low temperature in a circulating mode, and the risk of short circuit and open circuit is better avoided.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims (1)

1. Horizontal embedment transformer of little micropower, its characterized in that: the winding device comprises a shell (5), a winding frame (1) arranged in the shell (5), iron core mounting holes (1-4) arranged in the winding frame (1), a primary winding (2) and a secondary winding (3) arranged on the winding frame (1), a primary and secondary baffle (1-5) arranged on the winding frame (1) and positioned between the primary winding (2) and the secondary winding (3), two groups of primary output pins (1-1) and two groups of secondary pins (1-2) arranged at two ends of the winding frame (1), and two groups of framework wire distributing grooves (1-3) respectively arranged between the two groups of primary output pins (1-1) and the two groups of secondary pins (1-2), wherein the iron core mounting holes (1-4) are used for mounting and are respectively connected with the winding frame (1) and the primary winding (2), The transformer comprises a secondary winding (3), a transformer iron core (4) connected with a primary and secondary baffle (1-5), and a polyurethane pouring sealant (6) for sealing the winding framework (1), the primary winding (2), the secondary winding (3), the primary and secondary baffle (1-5) and the transformer iron core (4) in a shell (5); the strip-shaped limiting bulge (7) is arranged on the outer wall of the bottom surface of the shell (5); the dimensions of the housing (5) are 23.5mm 22.5mm 20.5 mm.

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