JP2534931Y2 - Reel with pin terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a bobbin such as an inductor provided in a power supply device or the like.

[Prior Art] As shown in FIGS. 4 to 6 (but shown upside down), a conventional winding frame with pin terminals has a flange 5 projecting downward at both ends of a cylindrical winding frame. I-shaped pin terminal (mounting terminal) 1 '
Are embedded, and a lump-shaped wire 7 (see FIG. 6) is wound around an I-shaped pin terminal (mounting terminal) 1 '. On both sides of the lower end surface of the flange 5, standoffs 4 are provided for stabilizing the mounting on the board. The winding is
It is wound around a bobbin through a guide groove 6 provided in a flange 5 near the pin terminal 1 '.

With reference to FIG. 1, the winding forms a wound coil 8,
Abutting two U-shaped magnetic cores 9 from both sides of the winding frame,
From above, two cores 9
Are fixed to form an inductor.

[Problem to be Solved by the Invention] However, in the above-described winding frame with a pin terminal, since the I-shaped pin terminal 1 ′ shares the mounting terminal and the carrage terminal, the insertion / extraction force to the substrate is reduced. When the external force in the bending direction (arrow in FIG. 7) is applied to the pin terminal 1 ', the winding often breaks. There was a point.

In view of the above-mentioned point, the technical problem of the present invention is to have a large mechanical strength against the insertion / extraction force applied to the mounting terminal and to protect the winding from external force acting in the bending direction to prevent disconnection. It is an object of the present invention to provide a winding frame with a pin terminal.

[Means for Solving the Problems] According to the present invention, a flange provided to extend downward at both ends of a bobbin, and a stand-off provided to project downward from both sides of a lower end surface of the flange. And a J-shaped bent portion is buried in the flange portion, both ends protrude in the direction in which the standoffs protrude, and protrude from the lower end surface so as to be parallel to a line connecting the standoffs on both sides. A J-shaped pin terminal, wherein the longer one of both ends of the pin terminal protruding from the lower end surface of the flange portion is longer than the protrusion length of the standoff, and the shorter one is the length of the standoff. A winding frame with a pin terminal is obtained, which is shorter than the protruding length and is used as a winding terminal of the winding.

[Embodiment] FIG. 2 shows a terminal section of an embodiment according to the present invention, FIG. 3 shows a sectional view thereof, and FIG. 7 shows an example of mounting. As is apparent from these figures, flanges 5 are provided at both ends of the winding frame so as to extend downward, and standoffs 4 are provided so as to project downward from both sides of the lower end surface of the flange 5.
The entire bent portion of the J-shaped pin terminal 3 is formed so that both ends thereof protrude from the lower end surface of the flange 5 in the direction in which the standoffs 4 protrude, and are arranged in parallel with the line connecting the standoffs 4 on both sides.
Buried in In these protruding portions, the longer one is used as the mounting terminal 1, and the shorter one is used as the carrage terminal 2.
The projecting length of the mounting terminal 1 is longer than the projecting length of the standoff 4, and the projecting length of the carrage terminal 2 is shorter than the projecting length of the standoff 4.

According to such a structure, the J-shaped pin terminal 3 is
Since the entire bent portion in the shape of a letter is buried in the flange 5, it has a large mechanical strength against the insertion / extraction force acting when the inductor is detached from the substrate. On the other hand, as shown in FIG.
The ends of the windings are lumped to the lump terminals 2 and fixed by soldering. Therefore, even if a force in the bending direction acts on the mounting terminal 1, no force acts on the carrage terminal 2.
Disconnection of the winding can be prevented without fixing the lump portion of the luggage terminal 2 with an adhesive. In addition, the flange 5 is formed so as to extend downward at both ends of the bobbin, and the J-shaped pin terminal 3 is parallel to the line connecting the mounting terminal 1 and the carrage terminal 2 to the two standoffs 4. Since they are arranged side by side, the pin terminals 3 can be embedded without extending the flange 5 to the side of the winding frame. This means that the mounting area can be smaller than that of a reel in which the flange 5 is extended to the side of the reel.

[Effects of the Invention] As described above, the winding frame with pin terminals according to the present invention is:
It has a large mechanical strength against the insertion / extraction force acting on the pin terminals, and can prevent the wire breakage of the windings, which has frequently occurred in the past. Since it can be omitted and the pin terminals are oriented in the same direction as the conventional one, soldering can be performed by the same working method as the conventional one. In addition, since the thickness of the flange portion can be reduced by devising the arrangement of the mounting terminal and the carrage terminal protruding from the flange portion, the mounting area of the winding frame with pin terminals can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of an assembled state of a winding frame with a pin terminal, and FIG.
FIG. 3 is a perspective view of a terminal portion of the winding frame with pin terminals according to the embodiment of the present invention, and FIG. 3 is a sectional view of the terminal portion shown in FIG. FIG. 4 is a perspective view of a terminal portion of a conventional winding frame with a pin terminal, FIG. 5 is a cross-sectional view thereof, and FIG. It is the perspective view which showed the state. FIG. 7 is a perspective view showing a state in which a winding is lapped on the terminal portion shown in FIG. In the figure, 1 is a mounting terminal, 2 is a carrage terminal, 3 is a J-shaped pin terminal, 4 is a standoff, and 5 is a collar.

Claims (1)

(57) [Scope of request for utility model registration] 1. A flange provided at both ends of a winding frame so as to extend downward, a standoff provided to project downward from both sides of a lower end surface of the flange, and a J-shaped bent portion. A J-shaped pin terminal buried in the flange portion, both ends protruding in a direction in which the standoff protrudes, and protruding from the lower end surface so as to be arranged in parallel with the side wall surface of the flange portion; A longer terminal end of the pin terminal protruding from the lower end surface of the flange is longer than the protrusion length of the stand-off, and a shorter one is shorter than the protrusion length of the stand-off to be a winding carrage terminal. A winding frame with a pin terminal.