CN211654483U - Small transformer - Google Patents

Abstract

The utility model discloses a miniature transformer, including epitheca, inferior valve, coil and fin, the epitheca with the mutual joint of inferior valve forms the accommodating space that has the effect of acceping, the coil with the fin all sets up in the accommodating space, the fin with the connection can be dismantled to the epitheca, and is located the top of coil, be provided with the intercommunication on the top surface of epitheca accommodating space's louvre, the fin can absorb the heat that the coil during operation produced to pass through absorbed heat the louvre gives off accommodating space's outside can improve miniature transformer's radiating effect.

Description

Small transformer

Technical Field

The utility model relates to a transformer technical field especially relates to a miniature transformer.

Background

A Transformer (Transformer) is a device that changes an alternating-current voltage by using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). Transformers are generally classified into various types according to functions and working scenes, such as some communication transformers disposed on electronic equipment, and such transformers are generally small in size due to limitations of installation environments. The small-sized transformer is generally only provided with the coil and the circuit board and then is electrically connected with other electronic equipment through a lead, and because the small-sized transformer is small in size and is generally not provided with a heat dissipation device, the small-sized transformer is poor in heat dissipation effect and easy to burn out in the working process.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a miniature transformer aims at solving the relatively poor problem of miniature transformer radiating effect.

The utility model discloses a miniature transformer, including epitheca, inferior valve and coil, the coil is fixed in the inferior valve, the epitheca with the mutual joint of inferior valve forms accommodating space, be provided with the fin in the accommodating space, the fin with the connection can be dismantled to the epitheca, and is located the top of coil, be provided with on the roof of epitheca a plurality of with the louvre of accommodating space intercommunication, the fin passes through the louvre is right the transformer dispels the heat.

Furthermore, a dustproof groove is formed in the top surface of the upper shell, a dustproof net is arranged in the dustproof groove, the dustproof net corresponds to the radiating holes in position, and dust is prevented from entering the accommodating space through the radiating holes.

Furthermore, two opposite side edges of the upper shell respectively extend downwards to form a first positioning plate, a first positioning protrusion is arranged on the first positioning plate, first clamping plate grooves corresponding to the first positioning plate are respectively arranged on the two side edges of the lower shell, and a first positioning groove corresponding to the first positioning protrusion is arranged in each first clamping plate groove.

Furthermore, two opposite sides of the lower shell respectively extend upwards to form a second positioning plate, a second positioning protrusion is arranged on the second positioning plate, second clamping plate grooves are respectively arranged on the inner side walls of the two sides of the upper shell, and second positioning grooves corresponding to the second positioning protrusions are arranged in the second clamping plate grooves.

Furthermore, a third positioning groove is formed in the upper surface of the lower shell, and a third positioning protrusion corresponding to the third positioning groove is formed in the bottom surface of the upper shell.

Furthermore, a silica gel pad is arranged in the third positioning groove, and the third positioning bulge extends into the third positioning groove and abuts against the silica gel pad.

Furthermore, a plurality of pins are fixedly connected to the lower shell, the tops of the pins extend into the accommodating space and are electrically connected with the coil, and the bottoms of the pins extend out of the lower shell and are electrically connected with other electrical components.

The utility model discloses a miniature transformer compares with prior art, and beneficial effect is:

the upper casing with the inferior valve is connected and is formed accommodating space, the coil with the fin all sets up in the accommodating space, the fin can absorb the heat that the coil during operation produced to with these heats through the louvre gives off accommodating space's outside has improved small-size transformer's radiating effect.

Drawings

FIG. 1 is a schematic structural diagram of a miniature transformer;

FIG. 2 is a cross-sectional view of FIG. 1 taken in the direction A;

FIG. 3 is an exploded view of a miniature transformer;

FIG. 4 is a schematic structural view of the upper case and the heat sink;

FIG. 5 is a structural view of the lower case;

description of the figures

100. A miniature transformer; 10. an upper shell; 11. an accommodating space; 12. heat dissipation holes; 13. installing a shaft; 14. a dust screen; 15. a dust-proof groove; 16. a first positioning plate; 161. a first positioning projection; 17. a second card slot; 171. a second positioning groove; 18. a third positioning projection; 20. a lower case; 21. a clamping plate groove; 211. a first positioning groove; 22. a second positioning plate; 221. a second positioning projection; 23. a third positioning groove; 24. a silica gel pad; 30. a coil; 40. a heat sink; 41. a through hole; 50. and (7) a pin.

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 should be noted that when one component is considered to be "connected" to another component, it may be directly connected to the other component or intervening components may exist. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; either mechanically or electrically, and may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

It should be further noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 and 2, the utility model discloses a miniature transformer 100, including epitheca 10, inferior valve 20, coil 30 and fin 40, epitheca 10 with inferior valve 20 joint each other forms accommodating space 11 that has the effect of accomodating, coil 30 with fin 40 all sets up in accommodating space 11, fin 40 is used for absorbing the heat that coil 30 during operation produced to with the absorbed heat give off accommodating space 30's outside.

The coil 30 is fixedly connected with the lower shell 20, and a circuit board electrically connected with the coil 30 is further arranged in the lower shell 20. The lower shell 20 is fixedly connected with a plurality of pins 50, and the plurality of pins 50 are respectively and uniformly distributed on two side edges of the lower shell 20. The tops of the pins 50 extend into the accommodating space 11 and are electrically connected with the coil 30, and the bottoms of the pins 50 extend below the bottom 20 and are electrically connected with other electrical components. The coil 30 is electrically connected to other electrical components through the pins 50.

As shown in fig. 3 and 4, the heat sink 40 is detachably coupled to the upper case 10. The heat dissipation structure is characterized in that a plurality of mounting shafts 13 are arranged in the upper shell 10, a plurality of through holes 41 corresponding to the mounting shafts 13 are formed in the edge position of the heat dissipation sheet 40, fastening screws are arranged on the heat dissipation sheet 40, and one ends of the fastening screws penetrate through the through holes 41 to be in threaded connection with the mounting shafts 13, so that the heat dissipation sheet 40 is fixed in the upper shell 10. The heat dissipation plate 40 is located inside the accommodation space 11 and above the coil 30, and is used for absorbing heat generated by the coil 30 during operation, a plurality of heat dissipation holes 12 communicated with the accommodation space 11 are formed in a top plate of the upper case 10, the heat dissipation holes 12 correspond to the heat dissipation plate 40, and the heat absorbed by the heat dissipation plate 40 can be dissipated to the outside of the accommodation space 11 through the heat dissipation holes 12, so that the heat dissipation effect of the miniature transformer can be improved.

The upper case 10 is provided with a dust screen 14, and the dust screen 14 is disposed on the top surface of the upper case 10 and corresponds to the heat dissipation holes 12 in position, so as to prevent dust from entering the accommodating space 11 through the heat dissipation holes 12. Be provided with dust groove 15 on the top surface of epitheca 10, dust screen 14 passes through the screw setting and is in dust groove 15, with epitheca 10 can dismantle the connection.

As shown in fig. 4 and 5, the upper case 10 and the lower case 20 are engaged with each other. Two opposite side edges of the upper shell 10 extend downwards to form a first positioning plate 16, a first positioning protrusion 161 is arranged on the first positioning plate 16, two opposite side edges of the lower shell 20 are respectively provided with a clamping plate groove 21 corresponding to the first positioning plate 16, and a first positioning groove 211 corresponding to the first positioning protrusion 161 is arranged in the clamping plate groove 21; when the upper shell 10 is connected to the lower shell 20, the first positioning plate 16 extends into the first clamping plate groove 21, and the first positioning protrusion 161 extends into the first positioning groove 211, so that the upper shell 10 is clamped to the lower shell 20.

Two opposite side edges of the lower shell 20 extend upwards to form second positioning plates 22 respectively, second positioning protrusions 221 are arranged on the second positioning plates 22, second clamping plate grooves 17 corresponding to the second positioning plates 22 are arranged on the inner side walls of the two opposite side edges of the upper shell 10 respectively, and second positioning grooves 171 corresponding to the second positioning protrusions 221 are arranged in the second clamping plate grooves 17; when the upper shell 10 is connected with the lower shell 20, the second positioning plate 22 extends into the second clamping plate groove 17, and the second positioning protrusion 221 extends into the second positioning groove 171, so that the upper shell 10 is clamped with the lower shell 20.

In this embodiment, the two first positioning plates 16 and the two second clamping plate slots 17 are respectively disposed on different sides of the upper shell 10; the two second positioning plates 22 and the two first clamping plate grooves 21 are respectively arranged on different sides of the lower shell 20.

Further, a third positioning groove 23 is formed on the upper surface of the lower case 20, and a third positioning protrusion 18 corresponding to the third positioning groove 23 is formed on the bottom surface of the upper case 10. When the epitheca 10 with during the mutual joint of inferior valve 20, third location arch 18 stretches into in the third positioning groove 23, be used for right the epitheca 10 with inferior valve 20 is fixed a position, is convenient for the epitheca 10 with inferior valve 20 carries out the joint.

A silicone pad 24 (see fig. 3) is further disposed in the third positioning groove 23, and when the third positioning protrusion 18 extends into the third positioning groove 23, the third positioning protrusion 18 compresses the silicone pad 24, so that the upper case 10 and the lower case 20 are tightly clamped.

The present invention can be designed in various embodiments and modifications without departing from the spirit and scope of the present invention in its broadest sense, and the above-described embodiments are intended to illustrate the present invention, but not to limit the scope of the present invention.

Claims (7)

1. The utility model provides a small-size transformer, includes epitheca, inferior valve and coil, the coil is fixed in the inferior valve, its characterized in that, the epitheca with the mutual joint of inferior valve forms accommodating space, be provided with the fin in the accommodating space, the fin with the connection can be dismantled to the epitheca, and be located the top of coil, be provided with on the roof of epitheca a plurality of with the louvre of accommodating space intercommunication, the fin passes through the louvre is right the transformer dispels the heat.

2. The small transformer according to claim 1, wherein a dust-proof slot is formed on a top surface of the upper housing, a dust-proof net is disposed in the dust-proof slot, and the dust-proof net corresponds to the heat dissipation holes to prevent dust from entering the housing space through the heat dissipation holes.

3. A miniature transformer according to claim 1, wherein opposite sides of said upper housing respectively extend downward to form a first positioning plate, said first positioning plate is provided with a first positioning protrusion, two sides of said lower housing are respectively provided with a first clamping groove corresponding to said first positioning protrusion, and said first clamping groove is provided with a first positioning groove corresponding to said first positioning protrusion.

4. A miniature transformer according to claim 3, wherein said lower case has two opposite sides extending upwardly to form a second positioning plate, said second positioning plate having a second positioning protrusion thereon, said two sides of said upper case having inner sidewalls having a second locking groove thereon, said second locking groove having a second positioning recess therein corresponding to said second positioning protrusion.

5. A small-sized transformer according to claim 4, wherein a third positioning recess is provided on the upper surface of the lower case, and a third positioning projection corresponding to the third positioning recess is provided on the bottom surface of the upper case.

6. A miniature transformer according to claim 5, wherein a silicone pad is disposed in said third positioning groove, and said third positioning protrusion extends into said third positioning groove and abuts against said silicone pad.

7. A miniature transformer according to any of claims 1 to 6, wherein a plurality of pins are fixedly connected to said lower casing, the top of said pins extending into said receiving space and electrically connected to said coil, and the bottom of said pins extending out of said lower casing and electrically connected to an electrical component.

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