JPH0726821Y2 - Reel with pin terminal for surface mount type transformer - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to the structure of a bobbin with pin terminals used in a surface-mounted transformer or the like.

[Conventional technology]

5 to 7 show a conventional pin terminal winding frame for a surface mount type transformer.

As shown in FIG. 5, the reels 2 are formed on both ends of the tubular reel 1. A drawer base portion 3 is formed below the winding frame 2. As shown in FIG. 6, the drawer base 3 is provided with a plurality of L-shaped pin terminals 8 in a partially embedded state. The pin terminal 8 has a coloration terminal 4 protruding from the side surface of the drawer base portion 3 and a mounting terminal 5 protruding from the lower surface. A guide groove 9 for guiding the lead wire 6 to the carrage terminal 4 is formed in the drawer base 3.

A transformer using this reel with pin terminals is manufactured by the following procedure. First, as shown in FIG. 7, the winding frame 1 is wound to form a winding portion 10, and its lead wire 6 is connected to the carrage portion 4 of the pin terminal 8 through the guide groove 9, and EE, Terminal processing is performed by abutting the magnetic core 11 of EI type or the like. Then, the mounting terminal 5 of the pin terminal 8 is bent along the terminal positioning groove 7 so as to be parallel to the drawer base 3. As a result,
The pin terminal 8 finally becomes U-shaped.

[Problems to be solved by the invention]

In the conventional reel with pin terminals for surface mounting type transformers, since the carrage terminal 4 and the mounting terminal 5 project from the side surface of the drawer base 3 by the same size, the mounting terminal 5 is positioned after the lead wire 6 is processed. Since there is no choice but to perform processing along the lead-out groove 7, sufficient care must be taken in handling the winding frame with pin terminals before processing the lead wires 6 so that the mounting terminals 5 are not bent. Instead, it was a work problem.

Therefore, an object of the present invention is to provide a surface mounting type winding frame with pin terminals for a surface mounting type transformer which can easily perform a winding work.

[Means for Solving the Problems] According to the present invention, a tubular winding core, a winding frame provided at both ends of the winding core, and a terminal receiving groove are formed below the winding frame. In a winding frame with a pin terminal for a surface mount type transformer, which includes the drawn-out base part and a pin terminal accommodated in the terminal-receiving groove, the terminal-receiving groove is formed on the lower surface of the draw-out base part, and A bottom groove having a depth that allows the pin terminal to be positioned above the lower surface of the drawer base in the housed state, and the pin terminal extends beyond the carrage terminal and the carrage terminal protruding from the lateral surface of the drawer controller. A winding frame with a pin terminal for a surface mounting type transformer, which is present and is bent so as not to protrude from the lower surface and the lateral surface of the drawer base portion and housed in a terminal receiving groove, is obtained.

[Embodiment] An embodiment of the winding frame with pin terminals for a surface mount type transformer according to the present invention will be described below.

1 to 4 show an embodiment of a core with pin terminals for a surface mount type transformer of the present invention. As shown in FIG. 1, a winding frame 2 is formed on both ends of a cylindrical winding core 1 which is positioned horizontally. At the bottom of the reel 2 is a drawer base 3
Are formed. As shown in FIG. 2, the drawer base 3 is provided with a plurality of L-shaped pin terminals 8 in a partially embedded state. The pin terminal 8 is formed of an elongated conductive plate, and integrally has a package terminal 4 projecting from a side surface of the lead portion 3 and a mounting terminal 5 projecting downward. The carrage terminal 4 extends in parallel with the cylinder axis of the winding core 1. The mounting terminal 5 is
It has substantially the same length as the terminal positioning groove 7 formed on the lower surface of the drawer base 3. A guide groove 9 for guiding the lead wire 6 to the carrage terminal 4 is formed in the drawer base 3.

This bobbin with a pin terminal is formed into a bobbin with the mounting terminal 5 protruding vertically below the drawer base 3 as shown in FIG. 2, and the mounting terminal 5 is shown in FIGS. 3 and 4. It is made by bending along with the terminal positioning groove 7 as described above.
As a result, the tip of the mounting terminal 5 is substantially aligned with the side surface of the drawer base 3. Then, a predetermined winding is applied to this winding frame with pin terminals. According to this, the winding work can be easily performed without worrying about the bending of the mounting terminal 5.

Reference numeral 12 is a solder margin portion, and 13 is a terminal bending margin portion. That is, in the case of the winding frame with pin terminals, the terminal positioning groove 7 is provided on the lower surface of the drawer base 3 as a bottom groove for folding and housing the mounting terminal 5 of the pin terminal. 7 has a depth that allows the mounting terminal 5 to be positioned higher than the lower surface of the drawer base 3 when the mounting terminal 5 is folded and stored, so that the mounting terminal 5 should be aligned with the lower surface of the drawer base 3. When accommodated, the terminal bending allowance portion 13 is formed.

[Effect of device]

As described above, according to the winding frame with pin terminals for the surface mount type transformer according to the present invention, the bending process of the mounting terminal can be performed before winding, so that the mounting terminal is bent during the winding work. There is no such thing.

Further, according to the winding frame with pin terminals for a surface mount type transformer according to the present invention, since the pin terminal has a margin for bending, the pin terminals act as a leaf spring at this portion, so that the impact applied to the entire surface mount type transformer is reduced. The effect is that it can be relaxed, can be reliably mounted on the substrate while maintaining a stable state, and the winding work can be easily performed.
Further, since the E-shaped core or the like is mounted on the winding frame with the pin terminals for the surface mount type transformer according to the present invention in the direction along the horizontal plane, it is possible to reduce the overall height and make it thin, and the drawer base portion. Since this is formed, it is possible to prevent short circuit with the mounted E-shaped core or the like due to solder or the like attached to the pin terminals.

[Brief description of drawings]

1 to 4 show an embodiment of a winding frame with pin terminals for a surface mount type transformer according to the present invention. FIG. 1 is a perspective view, FIG. 2 is a sectional view of a terminal portion after bobbin molding, and FIG. The drawing shows a sectional view of the terminal portion after the terminal processing, and FIG. 4 shows a sectional perspective view of the same. Fifth
FIGS. 7 to 7 show an example of a conventional winding frame with a pin terminal for a surface mount type transformer, FIG. 5 is a perspective view, FIG. 6 is a sectional view of a terminal portion of a winding frame alone, and FIG. Fig. 3 is a line, showing a sectional view of the terminal portion after assembly. 1; winding core, 2; winding frame, 3; drawer base part, 4; carrage terminal, 5; mounting terminal, 6; lead wire, 7; terminal positioning groove, 8; pin terminal,
9; guide groove, 10; winding part, 11; magnetic core, 12; solder allowance part, 13; terminal bend allowance part.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Kenji Sugawara Kenji Sugawara 21-1 Taishi-do, Sendai-shi, Miyagi Tohoku Metal Industry Co., Ltd. (72) Naoki Murakami 1-1-6 Uchisaiwai-cho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Creator ▲ Sakaki ▼ Kazuhiko Hara 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (56) References A microfilm (JP, U) of Japanese Patent Application No. Sho 60-66968 (Japanese Utility Model Application No. 61-183510) taken in the specification and drawings. 7316) Microfilm (JP, U) filmed with the contents of the specification and drawings attached to the application

Claims (1)

[Scope of utility model registration request] 1. A tubular winding core, a winding frame provided at both ends of the winding core, a drawer base portion formed below the winding frame and provided with a terminal receiving groove, and the terminal. In a winding frame with a pin terminal for a surface-mounted transformer, which includes a pin terminal housed in a receiving groove, the terminal receiving groove is formed on a lower surface of the drawer base portion, and the pin terminal is housed in the housing frame. A bottom groove having a depth capable of locating the pin terminal above the lower surface of the drawer base is provided, and the pin terminal extends from the carrage terminal protruding from the lateral surface of the drawer base and the carrage terminal. At the same time, a winding frame with a pin terminal for a surface mounting type transformer, which is formed by bending the mounting terminal so as not to protrude from a lower surface and a lateral surface of the drawer base portion and housed in the terminal receiving groove.