JPH0726820Y2 - Reel with pin terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to the structure of a winding frame with pin terminals used in a surface mount transformer or the like.

[Conventional technology]

4 to 7 show a conventional bobbin with a pin terminal, FIG. 4 is a perspective view, FIG. 5 is a sectional view of a terminal part after molding of a bobbin with a pin terminal, and FIG. FIG. 7 is a sectional perspective view of the terminal portion after that, and FIG. In this winding frame with pin terminals, a winding frame 2 is provided at each end of a cylindrical winding core 1 whose cylinder axis is placed horizontally. A drawer base portion 3 is formed in the lateral direction of the reel 2. A pin terminal 8 is embedded and fixed in the drawer base 3. The pin terminal 8 has a carrage part 4 projecting from the lateral surface of the drawer base 3, and a mounting part 5 having a length matching the lateral surface of the drawer base 3 when bent downward in a U shape. is doing. Further, the drawer base portion 3 is formed with a guide groove 9 for guiding the lead wire 6 to the carrage portion 4.

After forming the bobbin, the bobbin with pin terminals is bent into a U shape with the mounting portion 5 along the terminal positioning groove 7 so that the mounting portion 5 does not protrude from the lateral surface of the drawer base portion 3 and becomes parallel. Bend and use. In addition, a terminal bending allowance gap 10 remains between the groove bottom of the terminal positioning groove 7 and the mounting portion 5. A magnetic core 11 is attached to the winding frame with pin terminals. In addition, 12 is a solder margin part.

[Problems to be solved by the invention]

In the conventional bobbin with a pin terminal, the mounting part 5 vertically protruding from the drawer base part 3 is bent into a U-shape along with the terminal positioning groove 7 by post-processing of the bobbin frame molding, and is drawn out. It is necessary to bend the mounting portion 5 so that the mounting portion 5 does not protrude from the lateral surface of the base portion 3 and is parallel to the mounting portion 5. Therefore, there is a problem that a bending defect is likely to occur during the bending process of the pin terminal and the bending process causes an increase in cost.

Therefore, an object of the present invention is to omit the bending process of the pin terminals in this type of winding frame with pin terminals.

[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 including the drawn-out base portion and a pin terminal accommodated in the terminal receiving groove, the terminal receiving groove is formed on the lower surface of the drawer base portion, and the pin terminal is accommodated in the state in which the pin terminal is accommodated. The bottom surface of the drawer base portion includes a bottom groove having a depth for matching the pin terminals, and the pin terminal extends from the side surface of the drawer base portion and the bottom surface of the drawer base portion while extending from the carrage portion. Further, there can be obtained a winding frame with a pin terminal, which is preliminarily bent so as not to protrude from the lateral surface and is mounted in the terminal receiving groove and the bottom groove.

[Embodiment] An embodiment of the winding frame with pin terminals according to the present invention will be described below.

1 to 3 show a bobbin with pin terminals according to the present invention.
The figure is a perspective view, FIG. 2 is a terminal section sectional view, and FIG. 3 is a terminal section sectional perspective view. However, in this reel with pin terminals,
The same parts as those described in FIGS. 4 to 7 are designated by the same reference numerals, and the description of the overlapping parts will be partially omitted.

In this reel with a pin terminal, a reel 2 is attached to both ends of a tubular core 1.
Are integrally provided, and a drawer base portion 3 is formed below each winding frame 2.

These drawer bases 3 are provided in a plurality of terminal receiving grooves 13, and each terminal receiving groove 13 houses a plurality of pin terminals. Each of the plurality of terminal receiving grooves 13 is formed in the lower surface of the drawer base portion 3, and includes a bottom groove having a depth that matches the pin terminals with the lower surface of the drawer base portion 3 in a state where the pin terminals are housed.

The pin terminal used here is a carrage part 4 protruding from the lateral surface of the drawer base 3, and extends from the carrage part 4, and is bent in advance so as not to protrude from the lower surface and the lateral surface of the drawer base 3. And the mounting portion 5 housed in the terminal receiving groove 13 including the bottom groove. That is, the pin terminal is
The mounting portion 5 has a hoop shape and is previously bent into a U-shape or a U-shape.

In the case of this reel with pin terminals, the guide groove 9 of the drawer base 3
It is easily assembled by accommodating a pin terminal having a mounting portion 5 which is bent in advance in a terminal receiving groove 13 provided on a wall surface near the terminal bending margin portion 10 on the lower surface of the drawer base portion 3. Since it does not exist, the mounting portion 5 is in close contact with the lower surface of the drawer base 3 after assembly.

That is, in the case of this winding frame with pin terminals, it is not necessary to manually bend the mounting portion 5 as in the conventional case, and the pin terminals can be mounted on the substrate in a stable state. As a result, damage to the pin terminals is prevented. In addition, the magnetic core 11 is combined from both sides with this winding frame with pin terminals, and can be easily manufactured when used as a surface mount type transformer or the like.

[Effects of the Invention] As described above, according to the bobbin with pin terminals according to the present invention, it is possible to omit the process of bending the terminal in a U-shape, and therefore, the influence of the bending of the terminal and the dimensional defect due to the bending process can be eliminated. Since it is not affected, it is effective for surely mounting the mounting part on the substrate in a stable state, and it is possible to provide a low-cost bobbin with pin terminals.

[Brief description of drawings]

1 to 3 show a bobbin with pin terminals according to the present invention.
The figure is a perspective view, FIG. 2 is a terminal section sectional view, and FIG. 3 is a terminal section sectional perspective view. 4 to 7 show a conventional bobbin with a pin terminal, FIG. 4 is a perspective view, FIG. 5 is a sectional view of a terminal part after molding of a bobbin with a pin terminal, and FIG. FIG. 7 is a sectional perspective view of the terminal portion after that, and FIG. 1; winding core, 2; reel, 3; drawer base part, 4; carrage part, 5; mounting part,
6; Lead wire, 7; Terminal positioning groove, 8; Pin terminal, 9; Guide groove, 1
0; terminal bending allowance, 11; magnetic core, 12; solder allowance, 13; terminal receiving groove.

Front page continuation (72) Inventor Naoki Murakami 1-16 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor ▲ Kazuhiko Sakaki Hara 1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (56) References A microfilm (JP, U) of the contents and drawings attached to the application for Japanese Patent Application No. Sho 61-35427 (No. Sho 62-149805). A micro film (JP, U) of Japanese Patent Application No. 60-66968 (Japanese Utility Model Application No. 61-183510) taken in the specification and drawings. -79612) A microfilm (JP, U) of the contents 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 reel with pin terminal housed in a receiving groove, the terminal receiving groove is formed on a lower surface of the drawer base, and the lower surface of the drawer base is housed with the pin terminal. Includes a bottom groove having a depth for matching the pin terminals, the pin terminals extending from the side surface of the drawer base portion, the bottom terminal of the drawer base portion extending from the carrage portion and A bobbin with a pin terminal, which comprises a mounting part which is bent in advance so as not to protrude from a lateral surface and is housed in the terminal receiving groove and the bottom groove.