CN218602216U - Switch power supply transformer - Google Patents

Abstract

The utility model discloses a switching power supply transformer belongs to transformer technical field, which comprises a framework, install the magnetic core on the skeleton, the winding of the magnetic core outside has primary and secondary, the skeleton includes sleeve and curb plate, the equal fixedly connected with curb plate in both ends of sleeve end, the magnetic core passes inside the sleeve, primary twines in the sleeve outside, primary keeps away from telescopic one side winding and has the insulating adhesive tape, insulating adhesive tape keeps away from telescopic one side and is provided with the fin, first louvre has been seted up to the position that the curb plate corresponds the fin, the fin is kept away from telescopic one side winding and has secondary, secondary keeps away from telescopic one side winding and has the insulating adhesive tape, install a plurality of pins on the curb plate, primary and secondary are connected with different pin electricity respectively, the skeleton has the insulating adhesive tape with the winding of the magnetic core outside, the utility model has the advantages of reducing the inside heat accumulation of switching power supply transformer, extension switching power supply transformer life.

Description

Switch power supply transformer

Technical Field

The utility model relates to a transformer technical field specifically is a switching power supply transformer.

Background

The switch power supply transformer is a soft magnetic electromagnetic element, has the functions of power transmission, voltage transformation and insulation isolation, and is widely applied to power supply technology and power electronic technology. Due to the airtight structure of the switching power supply transformer, heat is easily accumulated in the switching power supply transformer, so that the temperature inside the switching power supply is far higher than the temperature outside the switching power supply transformer, and the switching power supply transformer is easily damaged and scrapped.

Based on this, the utility model designs a switching power supply transformer to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a switching power supply transformer to solve above-mentioned technical problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a switching power supply transformer, includes the skeleton, install the magnetic core on the skeleton, the winding has primary and secondary, the skeleton includes sleeve and curb plate, the equal fixedly connected with curb plate in both ends of sleeve end, the magnetic core passes inside the sleeve, primary twines in the sleeve outside, primary keeps away from telescopic one side winding and has insulating adhesive tape, insulating adhesive tape keeps away from telescopic one side and is provided with the fin, first louvre has been seted up to the position that the curb plate corresponds the fin, the fin is kept away from telescopic one side winding and has secondary, secondary has insulating adhesive tape far away from telescopic one side winding, install a plurality of pins on the curb plate, primary and secondary are connected with different pin electricity respectively, the winding has insulating adhesive tape outside the skeleton and the magnetic core.

Preferably, the magnetic core includes two magnetic conductors that are butted with each other, the cross-sectional profile of the magnetic conductor is E-shaped, the magnetic conductor includes a substrate, two ends of the substrate are fixedly connected with wing plates, the middle of the substrate is fixedly connected with a magnetic column, and the magnetic column is matched with the sleeve.

Preferably, a plurality of second heat dissipation holes are formed in the wall of the sleeve along the axial direction of the sleeve.

Preferably, an air gap is provided between the magnetic conductors.

Preferably, the cross-sectional shape of the heat sink is wave-shaped.

Preferably, the heat sink is made of flame retardant rubber.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses, the setting of first louvre and second louvre has improved the circulation of air in the switching power supply transformer to in time take away the heat that primary and secondary coil produced, improve the condition of long-pending heat in the switching power supply transformer, prolong switching power supply transformer's life.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the main structure of the present embodiment;

FIG. 2 is a schematic cross-sectional view of the present embodiment;

FIG. 3 is a schematic view of the structure of the salient magnetic core of the present embodiment;

FIG. 4 is a schematic view of the highlighted skeleton structure of the present embodiment.

In the drawings, the reference numbers indicate the following list of parts:

1. an insulating tape; 2. a substrate; 21. a wing plate; 22. a magnetic column; 3. a side plate; 31. a first heat dissipation hole; 32. a second heat dissipation hole; 33. a sleeve; 4. a secondary coil; 5. a heat sink; 6. a primary coil; 7. a pin; 8. an air gap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a switching power supply transformer comprises a framework, a magnetic core is installed on the framework, a primary coil 6 and a secondary coil 4 are wound on the outer side of the magnetic core, the framework comprises a sleeve 33 and side plates 3, the two ends of the end of the sleeve 33 are fixedly connected with the side plates 3, the magnetic core penetrates through the sleeve 33, the primary coil 6 is wound on the outer side of the sleeve 33, an insulating tape 1 is wound on one side, away from the sleeve 33, of the primary coil 6, a radiating fin 5 is arranged on one side, away from the sleeve 33, of the insulating tape 1, a first radiating hole 31 is formed in the position, corresponding to the radiating fin 5, of the side plate 3, a secondary coil 4 is wound on one side, away from the sleeve 33, of the secondary coil 4, the insulating tape 1 is wound on one side, away from the sleeve 33, a plurality of pins 7 are installed on the side plates 3, the primary coil 6 and the secondary coil 4 are respectively electrically connected with different pins 7, and the framework and the insulating tape 1 is wound on the outer side of the magnetic core;

in this embodiment, the heat sink 5 is disposed around the inside of the secondary coil 4, the heat sink 5 is used to guide the heat generated by the primary coil 6 and the secondary coil 4 to be discharged from the first heat dissipation hole 31, the magnetic core is made of ferrite, the magnetic conduction effect is good, and the insulating tape 1 is used to prevent the short circuit between the primary coil 6 and the secondary coil 4; be connected the magnetic core with the skeleton in skeleton and the winding insulating tape 1 in the magnetic core outside for the magnetic core can be fixed on the skeleton.

Preferably, the magnetic core comprises two magnetic conductors which are butted with each other, the cross section of each magnetic conductor is E-shaped, each magnetic conductor comprises a substrate 2, wing plates 21 are fixedly connected to two ends of each substrate 2, a magnetic column 22 is fixedly connected to the middle of each substrate 2, and each magnetic column 22 is matched with the sleeve 33;

in this embodiment, the sleeve 33 is disposed outside the magnetic pillar 22, and the sleeve 33 supports the magnetic core.

Preferably, the wall of the sleeve 33 is provided with a plurality of second heat dissipation holes 32 along the axial direction;

in this embodiment, the sleeve 33 can absorb heat generated by the primary coil 6 and the secondary coil 4 during the use of the switching power supply transformer, and the contact area between the sidewall of the sleeve 33 and the air can be increased by forming the second heat dissipation hole 32, thereby improving the heat dissipation effect.

Preferably, an air gap 8 is provided between the magnetic conductors;

in this embodiment, the setting of air gap 8 can increase the magnetic resistance of magnetic core to the extension magnetic core reaches the time of magnetic saturation, makes the magnetic core can store more energy, and can increase magnetoelectric conversion efficiency, reduces and generates heat.

Preferably, the cross-sectional shape of the heat sink 5 is wave-shaped;

in this embodiment, the heat sink 5 is in a wave shape, so that the two sides of the heat sink 5 can form a channel for air circulation, thereby facilitating heat discharge.

Preferably, the heat sink 5 is made of flame retardant rubber;

in this embodiment, the flame retardant rubber is neoprene or chlorosulfonated polyethylene or polyvinyl chloride or silicone rubber, and the flame retardant rubber is used, so that the overheating and spontaneous combustion of the radiating fins 5 can be prevented, and the fire hazard can be reduced.

One specific application of this embodiment is:

the arrangement of the first heat dissipation holes 31, the second heat dissipation holes 32 and the heat dissipation fins 5 improves the air circulation quantity in the switching power supply transformer, so that heat generated by the primary coil 6 and the secondary coil 4 is taken away in time, the condition of heat accumulation in the switching power supply transformer is improved, and the service life of the switching power supply transformer is prolonged.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted", "disposed", "connected", "fixed", "screwed" and the like are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral body; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a switching power supply transformer, includes the skeleton, install the magnetic core on the skeleton, the winding has primary (6) and secondary (4), its characterized in that in the magnetic core outside: the skeleton includes sleeve (33) and curb plate (3), the equal fixedly connected with curb plate (3) in both ends of sleeve (33) end, the magnetic core passes inside sleeve (33), primary (6) twine in the sleeve (33) outside, one side winding that sleeve (33) were kept away from in primary (6) has insulating tape (1), one side that sleeve (33) were kept away from in insulating tape (1) is provided with fin (5), first louvre (31) have been seted up to the position that curb plate (3) correspond fin (5), one side winding that sleeve (33) were kept away from in fin (5) has secondary (4), one side winding that sleeve (33) were kept away from in secondary (4) has insulating tape (1), install a plurality of pins (7) on curb plate (3), primary (6) and secondary (4) are connected with different pin (7) electricity respectively, the skeleton has insulating tape (1) with the winding outside the magnetic core.

2. A switching power supply transformer according to claim 1, characterized in that: the magnetic core comprises two magnetic conductors which are mutually butted, the cross section profile of each magnetic conductor is E-shaped, each magnetic conductor comprises a base plate (2), wing plates (21) are fixedly connected to two ends of each base plate (2), a magnetic column (22) is fixedly connected to the middle of each base plate (2), and each magnetic column (22) is matched with the corresponding sleeve (33).

3. A switching power transformer as claimed in claim 2, wherein: the wall of the sleeve (33) is provided with a plurality of second heat dissipation holes (32) along the axial direction.

4. A switching power supply transformer according to claim 2, characterized in that: an air gap (8) is arranged between the magnetic conductors.

5. A switching power transformer as claimed in claim 1, wherein: the cross section of the radiating fin (5) is wave-shaped.

6. A switching power supply transformer according to claim 1, characterized in that: the radiating fins (5) are made of flame-retardant rubber.

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