TW201637040A - Surface-mount coil and inductor device - Google Patents

Abstract

The present invention provides a surface-mount coil and an inductor device, particularly a coil or an inductor suitable for emission and reception of wireless charging. The device is mainly composed of a plastic substrate as the flat carrier for picking and placing a copper coil. A flat helical coil is placed in a predetermined groove of the carrier, and an iron sheet is covered thereon as a magnetic shield. This facilitates the picking, placing and assembling processes by machine or manual operation.

Description

Surface-bonded coil and inductive device

The present invention relates to a surface-fitting coil and inductive device, and more particularly to a wirelessly charged transmitting and receiving coil or inductor.

The conventional coil or inductor structure is mainly composed of a hollow casing as a base, and a vertical coil or a metal piece is built in the carrier, and a cylindrical mandrel is inserted into the inner diameter of the vertical coil or the metal piece, and finally The ends are then closed with end plates.

The above-mentioned inductors with carriers, such as vertical coils, metal sheets and mandrels, have been used in many applications, but the inductances made by ordinary carriers, vertical or metal sheets and mandrels make the inductance and processing procedures severely limited. Or in order to meet the inductance required by electrical products, the volume is increased to achieve the required inductance.

Moreover, due to the structural characteristics, the inductance of the conventional structure is too large to be reduced, and it cannot be applied to electronic products requiring small size, especially wireless charging (Tx) and reception (Rx). Coil or Inductor.

Therefore, the coil or inductor made by the surface mount device technology in this case can solve the two main problems of the similar products listed above.

The main technical means of the surface-bonding coil and the inductor device of the present invention mainly comprises a flat plastic substrate as a flat carrier for picking up and placing a copper coil, and a flat spiral coil back cover is placed in the groove of the plastic substrate. The united iron piece acts as a barrier magnetic field.

The above structure is convenient for machine or manual pick-and-place and combination, and its volume is small and small, and its composition is more capable of achieving higher inductance, lower core loss or smaller volume reduction under the same performance.

In the surface-bonding inductor device of the present invention, the input end and the output end of the copper coil exposed to the carrier may be disposed on the same side or both sides of the carrier.

1‧‧‧flat carrier

10‧‧‧ round column

11‧‧‧Underground circular groove

12‧‧‧Upper groove

13‧‧‧ Groove

14‧‧‧Conductor

15‧‧‧Conductor

16‧‧‧ Groove

17‧‧‧ Groove

18‧‧‧Conductor

19‧‧‧Conductor

2‧‧‧flat spiral coil

20‧‧‧ round hole

21‧‧‧ Extension line end

22‧‧‧Extension line end

3‧‧‧ Covered iron pieces

Figure 1 is an exploded perspective view of the apparatus of the present invention.

Fig. 2 is an exploded perspective view showing the assembly of the device of the present invention.

Figure 3 is a perspective view showing the assembled assembly of the device of the present invention.

Figure 4 is an exploded perspective view of another embodiment of the apparatus of the present invention.

Figure 5 is a partially assembled exploded perspective view of another embodiment of the apparatus of the present invention.

Figure 6 is a perspective view showing the assembly of another embodiment of the apparatus of the present invention.

The surface-bonding coil and the inductor device of the present invention comprise two embodiments in which the input end and the output end of the copper coil are disposed on the same side or both sides of the carrier.

The input end and the output end of the copper coil are disposed on the same side of the carrier, as shown in the first, second, and third figures.

As shown in Figures 1 and 2, the surface-bonding coil and the inductor device of the present invention mainly comprise a flat carrier (1) formed of a plastic substrate, and a flat spiral formed of a copper material (Copper). The coil (2) and a metal material (Ferrite) cover the iron piece (3).

The flat carrier (1) is in the form of a figure, a square, a rectangle, a prism or an ellipse. The flat carrier (1) is provided with a lower circular groove (11) and an upper groove (12), and a lower circular groove. (11) The center has a circular column (10), and on the side of the flat carrier (1), a groove (13) extends from the lower circular groove (11) and the upper groove (12), and the flat carrier ( 1) Two conductive sheets (14, 15) are buried in the near groove (13).

As shown in Figures 1 and 2, the flat spiral coil (2) is wound by a copper wire, and the center of the spiral coil (2) has a circular hole (20), and the inner and outer circular ends are folded. After the bend, the two extension ends (21, 22) extend outward from the same direction.

The structure is such that the flat spiral coil (2) is placed in the lower circular groove (11) of the flat carrier (1), and the two extended line ends (21, 22) are extended outward from the groove (13). The conductive sheets (14, 15) respectively connected to the flat carrier (1), and the cover iron sheets (3) are covered by the upper layer grooves (12) of the flat carrier (1) via glue, and the iron sheets are covered (3). In addition to fixing the flat spiral coil (2) and acting as a barrier magnetic field.

The structure of the surface-bonding coil and the inductive device of the invention is convenient for machine or manual pick-and-place and combination.

The input end and the output end of the copper coil are arranged on the same side structure of the carrier, as shown in Figures 4, 5 and 6.

As shown in Figures 4 and 5, the flat carrier (1) has a groove (16, 17) extending from the lower circular groove (11) and the upper groove (12) on both sides, and the flat carrier (1) has two ends. Two conductive sheets (18, 19) are embedded in the upper part.

As shown in Figures 4 and 5, the flat spiral coil (2) is formed by winding a copper wire, and the center of the spiral coil (2) has a circular hole (20), and the inner and outer circular ends are folded. After the bending, the two extended line ends (21, 22) extend outward from different directions, and the center of the spiral coil (2) is hollow in the middle.

As shown in Figures 4 and 5, the structure is such that the flat spiral coil (2) is placed in the lower circular groove (11) of the flat carrier (1), and the two extension ends (21, 22) are respectively The conductive sheets (18, 19) extending outward from the grooves (16, 17) and respectively connected to the two ends of the flat carrier (1), and the cover iron sheets (3) are covered by the glue to the flat carrier (1) The upper layer groove (12), the cover iron piece (3) except the fixed flat spiral coil (2) and acts as a barrier magnetic field.

The above-mentioned examples are only an example provided for the purpose of illustrating the patent, and the present invention is not limited to the examples, and any minor modifications and modifications made with reference to the present invention are within the scope of the patent.

1‧‧‧flat carrier

10‧‧‧ round column

11‧‧‧Underground circular groove

12‧‧‧Upper groove

13‧‧‧ Groove

14‧‧‧Conductor

15‧‧‧Conductor

2‧‧‧flat spiral coil

20‧‧‧ round hole

21‧‧‧ Extension line end

22‧‧‧Extension line end

3‧‧‧ Covered iron pieces

Claims (2)

A surface-bonding coil and an inductor device mainly comprises a flat carrier (1) formed of a plastic substrate, a flat spiral coil (2) formed of a copper material, and a covered iron piece of a metal material (3) The flat carrier (1) is in the form of a figure, a square, a rectangle, a prism or an ellipse. The flat carrier (1) is provided with a lower circular groove (11) and an upper groove (12) in the center. A groove (13) extends from a lower circular groove (11) and an upper groove (12) on one side of the flat carrier (1), and two conductive sheets are embedded in the near groove (13) of the flat carrier (1). 14, 15); the flat spiral coil (2) is formed by winding a copper wire, and the inner and outer round ends are bent outwardly and extend outward from the same direction by two extended line ends (21, 22); The structure is such that the flat spiral coil (2) is placed in the lower circular groove (11) of the flat carrier (1), and the two extended line ends (21, 22) are extended outward from the groove (13) and respectively The conductive sheet (14, 15) connected to the flat carrier (1), the cover iron piece (3) is covered with the upper groove (12) of the flat carrier (1) via glue, and the iron piece (3) is covered. In addition to fixing the flat spiral coil (2) and acting Barrier magnetic field. A surface-bonding coil and an inductor device mainly comprises a flat carrier (1) formed of a plastic substrate, a flat spiral coil (2) formed of a copper material, and a covered iron piece of a metal material (3) The first flat carrier (1) has a groove (16, 17) extending from the lower circular groove (11) and the upper groove (12) on both sides, and two flat bodies (1) are respectively embedded on the two ends. a conductive sheet (18, 19); the flat spiral coil (2) is formed by winding a copper wire, and the inner and outer round ends are bent and extended from different directions to extend the two end ends (21, 22); its structure is to place the flat spiral coil (2) in the lower circular recess of the flat carrier (1) In the groove (11), the two extending end (21, 22) are respectively extended outward from the groove (14, 15) and respectively connected to the conductive sheets (18, 19) at both ends of the flat carrier (1), The cover iron piece (3) is covered by a glue to the upper groove (12) of the flat carrier (1), and the cover iron piece (3) is fixed to the flat spiral coil (2) and serves as a barrier magnetic field.