Delta Electronics, Inc.

Chien-Chia Lin

Ming Yeh

Chen-Feng Wu

Heng Cheng Chou

Allen Chou

Ming-Chih Tsai

Chieh-Cheng Chen

Hui-Hua Teng

A solenoid valve includes a bobbin, a coil, a rod, and at least one ball. The bobbin has a through hole and a multiple-turning-point groove in the inner wall of the bobbin. The coil winds around the bobbin. The rod is disposed in the through hole and is capable of moving inward or outward along the through hole, and has a recess in the outer wall of the rod. Each ball is received in the groove and the recess at the same time.

Solenoid valve

An ignition coil. The ignition coil includes a casing, a bobbin, and a core. The bobbin includes a body, a primary coil surrounding the body, a secondary coil surrounding the body, a plurality of first terminals embedded in the body, and two secondary coils embedded in the body. The bobbin is disposed inside the casing. The primary coil is connected to the second terminal, and the secondary coil is connected to the first terminal. Each first terminal is abutted by the body and the casing respectively so that each first terminal is maintained in a predetermined position on the body. The core is disposed inside the bobbin.

Ignition coil

An ignition coil is provided. The ignition coil comprises a casing, a plurality of pins and a bobbin. The pins are disposed inside the casing. The bobbin, having a plurality of first terminals corresponding to the pins respectively, is disposed inside the casing. Each of the first terminals is provided with a ring-shaped portion in contact with the corresponding pin. Hence, resin, filled in the ignition coil, is prevented from leaking out of the casing.

An embedded transformer embedded in a board is disclosed. The embedded transformer includes a board, a first insulating sheet, a preformed coil, a second insulating sheet, a first core and a second core. Among these, the board includes a conductive pattern formed on an upper surface of the board. A part of said conductive pattern serves as a primary coil of the embedded transformer. The first insulating sheet is formed on the conductive pattern. The preformed coil is formed on the first insulating sheet. The second insulating sheet is formed on the preformed coil. The first core is formed on the second insulating sheet and partially embedded in the board. The second core formed on a lower surface of the board is partially embedded in the board so as to be couple to the first core.

Embedded transformer

A bobbin for a transformer is provided. The bobbin comprises a body, a first partition wall, a second partition wall, at least one third partition wall, and two first pins. The first partition wall, having a first protrusion, is formed on the body. The body is divided into a primary side and a secondary side by the first partition wall. The second partition wall, having a second protrusion with a thinner section, is formed on the secondary side of the body. The third partition wall, having a third protrusion with a notch, is formed on the secondary side of the body so that the third partition wall is close to the second partition wall and away from the first partition wall. The first pins are disposed on the secondary side of the body in a substantially U-shape.

Bobbin for a transformer

Disclosed is an inductor without a gap spacer. The inductor includes a bobbin having at least one round of wire wound thereon to serve as a coil of the inductor, a first magnetic member coupled with the bobbin, and a second magnetic member having a first end and a second end, wherein the second magnetic member is inserted into the bobbin from the second end thereof and the first end has a protrusion for allowing the second magnetic member to be partially inserted into the bobbin, thereby forming a gap between these two magnetic members.

Inductor

Disclosed is a method for adjusting the inductance of an inductor at least including a bobbin, a first magnetic member having a concavity on a side wall thereof, and a second magnetic member having a protrusion at a first end thereof for preventing the second magnetic member from being completely inserted into the bobbin so as to form a gap between the first and second magnetic members. The method includes the steps of selecting a reference piece with a suitable thickness to be disposed between the protrusion of the second magnetic member and the side wall of the first magnetic member with the concavity and closely attached to both of them t as said second magnetic member is inserted into said bobbin, and partially removing the second magnetic member from a second end thereof according to the thickness of the reference piece so as to obtain a predetermined inductance value. This method further includes a step of determining whether the inductance of the inductor is identical to the predetermined inductance value after the reference piece is disposed between the protrusion of the second magnetic member and the side wall of the first magnetic member with the concavity and the second magnetic member is partially inserted into the bobbin. If the inductance of the inductor is not identical to the predetermined inductance value the thickness of the reference piece can be changed to repeat the above-described steps until the predetermined inductance value is obtained.

Growing community of inventors

Taoyuan, Taiwan

Chien-Chia Lin