TWM479500U - Vertical type front mounted transformer - Google Patents

Description

Vertical surface mount transformer

An upright surface mount transformer.

As an electronic component, a transformer is a device that raises or lowers the voltage by applying Faraday's law of electromagnetic induction. It usually contains two or more sets of coils, and has multiple functions such as adjusting the voltage of the AC power, changing the impedance, and dividing the circuit. Transformers are often used in general electronic circuits. The transformer 7 of the past includes a first side end 71 on the right side of the drawing, a second side end 72 on the left side of the drawing, a magnetic core 73, and a coil 74 wound on the magnetic core 73, and is provided as shown in FIG. A good magnetic circuit, between the first side end 71 and the second side end 72, in addition to the space occupied by the coil 74, is additionally filled with a magnetically conductive glue to provide a complete magnetic circuit.

Since the height of the general component has its limitation, when the transformer 7 is placed on the circuit board 8 in a flat position, and in order to facilitate the suction of the nozzle during the surface mounting process, the top surface of the flat surface is not necessarily required, and a thin flat plate 9 must be additionally added. Further occupy part of the height. Therefore, if you want to provide enough coil turns, you need to rely on the front and rear direction to grow the core. In this way, on the one hand, the limited space of the circuit board is consumed, and on the other hand, when the magnetic core is extended in the left-right direction of the drawing, the ferromagnetic colloid is also bound to increase, and the magnetic permeability of this part is much lower than that of the magnetic core, so that the overall magnetic resistance is greatly increased. .

The present invention seeks to provide an upright surface mount transformer that avoids the influence of ferromagnetic gel on the magnetic permeability of the transformer, while providing a flat surface that can be adsorbed and moved, reducing the time required for installation and increasing the yield of the product. Through the technology of this case, in order to meet the safety of the board The height is limited, and the remaining electronic components of the board are not compressed, which effectively reduces the magnetic resistance and improves the efficiency of the transformer.

One of the purposes of the present invention is to provide a vertical surface mount transformer that replaces the transformer that was originally placed on the erect, thereby eliminating the height limitation of the transformer and extending the structure of the transformer, occupying a limited space of the circuit board.

Another object of the present invention is to provide a vertical surface mount transformer, which can change the iron core in the transformer to an upright position, and can increase the number of turns of the coil in a limited height to reduce the length of the magnetic conductive glue, thereby effectively reducing the magnetic resistance and improving Overall efficiency.

A further object of the present invention is to provide a flat surface directly, simplifying the product structure and using surface adhesion technology to improve manufacturing efficiency.

In order to achieve the above object, the present invention provides a vertical surface mount transformer for being disposed on a circuit board, the transformer comprising: an iron core, at least two coils, and a ferromagnetic gel covering the coil; wherein the core The utility model comprises a top portion, a base portion away from the top portion, and a concave winding portion connecting the top portion and the base portion; the coils respectively have at least two end joints, and each of the coils is respectively wound around the recess a winding portion; the top portion is formed with a flat surface for adsorbing and moving, the base portion is formed with six bottom guiding electrodes; and the two end portions of each of the coils are respectively connected to the bottom guiding Connect the electrodes.

The vertical surface mount transformer disclosed in the present invention changes the transformer disposed on the circuit board into an upright arrangement, and directly designs the upper surface to be flat, so as to use surface mounting without additional structure, thereby simplifying Design to reduce space occupation; In terms of increasing the number of turns of the coil, it is not necessary to increase the length of the core, thereby reducing the length of the magnetic permeability and reducing the magnetic resistance, thereby improving the electrical performance of the product.

1, 1', 7‧ ‧ transformer

2‧‧‧ iron core

21, 21’‧‧‧ top

211, 211'‧‧‧ flat surface

22, 22’ ‧ ‧ base

221, 221'‧‧‧ bottom conducting electrode

23‧‧‧Sag winding department

3‧‧‧Two coils

31‧‧‧End joints

4‧‧‧ Ferromagnetic colloid

5’‧‧‧Shell

6‧‧‧Circuit board

71‧‧‧First side

72‧‧‧second side

73‧‧‧ magnetic core

74‧‧‧ coil

8‧‧‧ boards

9‧‧‧thin flat plate

1 is a side view of a prior art; FIG. 2 is a perspective view of a transformer of a vertical type surface mount, illustrating the mutual relationship of the main structures of the magnetic core, and the outer contour of the concave winding portion is smaller than the top and the base; A side view of a transformer of an upright surface mount is to illustrate the surface mounting of the transformer to the circuit board; FIG. 4 is a perspective view of the bottom surface of the transformer of the vertical surface mount of the first embodiment of the present invention, illustrating the outline of the winding portion of the recess FIG. 5 is a perspective view of a transformer of a vertical surface mount of the second embodiment of the present invention; FIG. 6 is a side view of the transformer of the vertical surface mount of the second embodiment of the present invention.

The foregoing and other technical aspects, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments illustrated in the accompanying drawings. In the embodiments, the same elements will be similar. The label indicates.

The present invention relates to a vertical surface mount transformer. Referring to FIG. 2 to FIG. 4 together, the transformer 1 includes a core 2, which is a side view when the core 2 has a top portion 21, a distance and a relative The base portion 22 of the aforementioned top portion 21 and a recessed winding portion 23. As shown in the perspective view of FIG. 2, the outer contour of the top portion 21 and the base portion 22 are both larger than the outer contour of the recessed winding portion 23, and the top portion 21 forms a flat surface 211 for surface mounting to the circuit board. It is convenient for the suction nozzle of the robot arm to move and move.

Referring to the side view 3 in which the two coils 3 are assembled, the base portion 22 is formed with at least four bottom conducting electrodes 221, and the two coils 3 are wound around the recessed winding portion 23 for conducting current to generate a magnetic field. The two coils 3 have two end contacts 31 extending downwardly to different bottom conductive electrodes 221; respectively, when the surface is mounted, the positive and negative pads on the circuit board 6 are respectively connected.

Subsequently, the recessed winding portion 23 is covered with a layer of ferromagnetic glue 4 and is tangent to the top portion 21 and the outer portion of the base portion 22 to form a closed magnetic circuit. Of course, as will be readily understood by those skilled in the art, the ferromagnetic gel herein can also cover the base of the recessed winding portion, the top portion of the portion, and the portion.

As the structure of the present embodiment, the exposed portion of the top portion 21 forms a flat surface 211, and the bottom portion of the base portion 23 is exposed to expose the bottom conductive electrode 221, thereby forming a surface mountable transformer 1, wherein the ferromagnetic gel 4 is magnetic. The material (iron, cobalt, and nickel) is mixed into the resin glue to make the rubber contain a certain density of ferromagnetic metal powder, or a non-conductive ceramic powder such as oxide or nitride of these metals. Of course, since the resin material is not magnetically conductive, the so-called magnetic resistance of the ferromagnetic colloid only means that it can outperform the air and is still inferior to the core material.

When the two coils 3 are energized to generate a magnetic field, the core 2 is induced to increase the magnetic flux density, and the magnetic lines of force pass through the ferromagnetic gel 4 outside the recessed winding portion 23, so that a smooth magnetic field is formed between the top portion 21 and the base portion 22. The circuit, because the coil is increased in the case, the winding can be directly increased without selecting a longer iron core, which also reduces the length of the ferromagnetic gel corresponding to the length of the core, thereby greatly reducing the magnetic flux on the road. Resistance, further enhance the magnetic permeability. Although the aforementioned ferromagnetic gel 4 can reduce the magnetic resistance, the structure that is elongated by the front case will affect the magnetic permeability of the transformer 1 and then decrease.

With the above structure, the transformer which is required to be manually set in the prior art forms a flat surface for the robot arm to be adsorbed and moved on the top of the iron core in the transformer, and the manufacturing time is accelerated by the surface adhesion technology, and the production yield is also achieved. Rising with automated configuration. When the number of turns of the coil is increased by the vertical arrangement, the length of the iron core can be fixed, and the number of turns of the two coils wound around the iron core can be simply increased. Further, the iron core is formed by die casting to strengthen the overall structural strength of the iron core. This makes the transformer less susceptible to damage.

In the second embodiment of the present invention, please refer to FIG. 5 and FIG. 6. The transformer 1' according to the previous embodiment can directly insert a ferromagnetic material after the two coils (not shown) are wound around the iron core (not shown). In the casing 5', the inner space of the ferromagnetic casing 5' and the outer portion 21' of the core and the outer portion of the base 22' still have a small gap for the iron core to be placed after the winding, and allow iron A magnetic colloid (not shown) is poured into the aforementioned casing 5' to increase the magnetic permeability. In addition, the cover 5' is an upper and lower opening, and the upper opening is provided for the flat surface 211' of the top 21' of the iron core to be exposed, so as to facilitate surface mounting; relatively, the lower opening facilitates the bottom conductive electrode 221' of the base 22'. Connected to the positive and negative pads on the circuit board (not shown), does not affect the operation of electronic components.

It can be easily understood by those skilled in the art that the two coils of any of the foregoing embodiments can be simply inserted into the core, as long as the two coils are covered with a ferromagnetic glue and the top of the core is formed into a flat shape. The surface can be mounted on the board using surface mount technology.

The novel vertical surface mount transformer allows the manufacturer to perform the process more easily, and regardless of the number of turns of the two coils, the length of the core can be kept from being excessively extended to reduce the magnetic circuit. Length, while reducing overall magnetic resistance and improving electrical performance. And by forming a flat surface directly on the top of the iron core, the overall structure is simplified, and the surface mounting technology is required, and the convenience of installation is increased, thereby achieving all of the above purposes.

However, the above is only the preferred embodiment of the present invention, and the scope of the novel implementation cannot be limited thereto. Any simple equivalent changes and modifications made according to the scope of the novel application and the contents of the new specification should be It is still within the scope of this new patent.

21‧‧‧ top

211‧‧‧flat surface

22‧‧‧ base

221‧‧‧ bottom conductive electrode

3‧‧‧Two coils

31‧‧‧End joints

4‧‧‧ Ferromagnetic colloid

6‧‧‧Circuit board

Claims (5)

An upright surface mount transformer for being disposed on a circuit board, the transformer comprising: an iron core, at least two coils, and a ferromagnetic gel covering the coil; wherein the core includes a top and a distance a base portion opposite to the top portion, and a recessed winding portion connecting the top portion and the base portion; the coils respectively have at least two end joints, and each of the coils is respectively wound around the recessed winding portion; The top portion is formed with a flat surface for adsorption transfer, and the base portion is formed with six bottom conductive electrodes; the two end contacts of each of the coils are respectively connected to the bottom conductive electrodes. An upright surface mount transformer as claimed in claim 1 wherein the core is die cast. The upright surface mount transformer of claim 1, wherein the coil is nested in the iron core. A vertical surface mount transformer as claimed in claim 1 further includes a casing. The upright surface mount transformer of claim 1, wherein the ferromagnetic glue covers the recessed winding portion and is tangent to the top portion and the outer portion of the base to form a closed magnetic circuit.