JPH08306555A - Winding frame with pin terminal - Google Patents

Abstract

PURPOSE: To prevent the reduction in an arrangement pitch and a degree of flatness of a pin terminal by a method wherein a mounting part of the pin terminal is formed at a specific width and a connection part bound up with a lead part of a coil is formed at a specific width more than the mounting part. CONSTITUTION: Coil positional or primary and secondary insulating flanges 2 are formed in a winding frame 1 to which a coil is applied, and a pedestal 3 that a pin terminal 4 is embedded in the flange 2 at the both ends is integrally formed. The pin terminal comprises a connection part 4a projected from the pedestal 3 and bound up with a lead of the coil; and a mounting part 4b extending from the connection part 4a and bent. Here, a width of the mounting part 4b is 0.3 to 1.0mm and a width of the connection part 4a is 2 to 10 times the width of the mounting part 4b. Thereby, it is possible to secure the precision of an arrangement pitch of the pin terminal and to prevent the reduction in a degree of flatness.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal-equipped winding frame used for a coil component around which a winding such as a transformer, a choke coil or a noise filter is wound.

[0002]

2. Description of the Related Art FIG. 4 shows an example of a conventional bobbin with pin terminals. In this conventional example, flanges 12 are formed on both ends and an intermediate portion of a cylindrical winding frame 11, and pedestals 13 in which pin terminals 14 are embedded are integrally formed on the flanges 12 on both ends. The pin terminal 14 includes a connecting portion 14 a to which the lead portion of the coil wound around the winding frame 11 is connected, and the connecting portion 14 a.
The mounting portion 14b is formed by bending from a. In addition, the groove portion 15 formed in the pedestal 13
Is for pulling out the lead portion of the coil. A coil is applied to the bobbin with pin terminals, the lead portion of the coil is connected to a predetermined pin terminal 14, and a ferrite core or the like is inserted into the bobbin with pin terminal so that a transformer, a choke coil, a noise filter, etc. It is configured.

[0003]

In recent years, electronic equipment products and the like are required to be highly functional and to be small and thin. For this reason, even in the winding frame with pin terminals, the pin terminals have become thin and the width thereof has become small in order to achieve miniaturization.
Therefore, the mechanical strength of the pin terminals is not always sufficient. Therefore, when the coil lead part is connected to the pin terminal, the pin terminal is deformed by the force that entangles the coil lead part with the pin terminal connection part, and the accuracy and flatness of the arrangement pitch of the pin terminal mounting part and the flatness are improved. Etc. were likely to deteriorate, which adversely affected the implementation. The present invention, in view of the above,
An object of the present invention is to provide a winding frame with pin terminals, which prevents the arrangement pitch and flatness of the pin terminals from decreasing.

[0004]

According to the present invention, a winding frame to which a coil is applied, flanges provided at both ends of the winding frame, a pedestal formed integrally with the flange, and embedded in the pedestal. In the reel with pin terminals, the pin terminals project from the pedestal in a direction parallel to a surface on which the reel is mounted, and the projecting pin terminals are attached to the reel. It is composed of a connecting portion to which the lead portion of the wound coil is connected, and a mounting portion extending from the connecting portion in the projecting direction and bent to have a width of 1.0 to 2.0
mm, and the width of the connection portion is 2 to the width of the mounting portion.
It is five times. Further, the present invention is characterized in that the mounting portion has a width of 0.3 to 1.0 mm and the connecting portion has a width of 2 to 10 times the width of the mounting portion.

[0005]

According to the present invention, the mounting portion of the pin terminal is formed with a predetermined width and thickness, and the connecting portion with which the lead portion of the coil is entangled is formed wider than the mounting portion. It is possible to prevent the problem that the arrangement pitch of the mounting portions is displaced or the flatness is lowered due to the stress when the lead portions are entangled. Further, in the present invention, the width of the mounting portion is 1.
In the case of 0 to 2.0 mm, the width of the connecting portion was set to 2 to 5 times the width, and when the width of the mounting portion was 0.3 to 1.0 mm, the width of the connecting portion was set to 2 to 10 times the width. This becomes impractical when the width of the mounting portion is 1.0 to 2.0 mm and the width of the connecting portion exceeds 5 times the width of the mounting portion. Further, when the width of the mounting portion is 0.3 to 1.0 mm, it becomes impractical if the width of the connecting portion exceeds 10 times the width of the mounting portion. Also, if it is smaller than twice each, the effect is small.

[0006]

1 is a perspective view of an embodiment according to the present invention. An enlarged view of the pin terminal portion of this embodiment is shown in FIG. In this embodiment, a collar 2 for positioning the coil or for primary and secondary insulation is formed on a winding frame 1 to which a coil is applied, and a pedestal 3 having pin terminals 4 embedded in the collars 2 at both ends thereof is integrated. Is formed in. The groove portion 5 formed in the pedestal 3 is for drawing out the lead portion of the coil. The pin terminal 4 projects from the pedestal 3 and has a width different from the width of the connection portion 4a in which the coil lead is entangled and the width of the mounting portion 4b formed by bending and extending from the connection portion 4a. The width of the connecting portion 4a was 3 mm, and the width of the mounting portion was 0.8 mm. At this time, the thickness was 0.25 mm. A coil was applied to this winding frame with pin terminals, and the lead portion of the coil was entwined with the connection portion of the pin terminal 4, but there was no problem in the arrangement pitch deviation of the mounting portion 4b of the pin terminal 4 and in the flatness. At this time, the wire of the coil has a diameter of 0.03 m.
m polyurethane copper wire was used. Next, a perspective view of another embodiment according to the present invention is shown in FIG. In the figure, the same parts as those in the embodiment of FIG. 1 are designated by the same reference numerals. The embodiment shown in FIG. 3 has substantially the same structure as the embodiment shown in FIG. 1, but the structure of the pin terminal 4 is slightly different. In this embodiment, the pin terminal 4 has only one bent portion and is bent substantially at a right angle. In the present invention, the thickness of the pin terminal is suitably 0.2 to 0.4 mm, preferably 0.2 to 0.3 mm. The width of the mounting portion is preferably 0.5 to 1.0 mm, and the connecting portion at that time is preferably 2 to 4 mm. The wire rod used is preferably a polyurethane copper wire having a diameter of 0.03 to 0.15 mm.

[0007]

According to the present invention, in a bobbin with a pin terminal, even if the width of the mounting portion of the pin terminal is narrowed, the width of the connecting portion is widened, so that the accuracy of the arrangement pitch of the pin terminals can be improved. It is possible to secure the above, and to prevent a decrease in flatness.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment according to the present invention.

FIG. 2 is an enlarged view of a pin terminal portion according to an embodiment of the present invention.

FIG. 3 is a perspective view of another embodiment according to the present invention.

FIG. 4 is a perspective view of a conventional example.

[Explanation of symbols]

 1 reel 2 collar 3 pedestal 4 pin terminal 4a connection part 4b mounting part

Claims (2)

[Claims] 1. A winding frame to which a coil is applied, flanges provided at both ends of the winding frame, a pedestal integrally formed with the flange, and a pin terminal embedded in the pedestal. In the winding frame with a pin terminal, the pin terminal projects from the pedestal in a direction parallel to a surface on which the winding frame is mounted, and the projecting pin terminal is a lead portion of a coil wound around the winding frame. And a mounting portion extending from the connecting portion in the protruding direction thereof and formed by being bent, and the width of the mounting portion is 0.3 to 1.0 mm. A winding frame with a pin terminal, wherein the width of the connecting portion is 2 to 10 times the width of the mounting portion. 2. A winding frame to which a coil is applied, flanges provided at both ends of the winding frame, a pedestal integrally formed with the flange, and a pin terminal embedded in the pedestal. In the winding frame with a pin terminal, the pin terminal projects from the pedestal in a direction parallel to a surface on which the winding frame is mounted, and the projecting pin terminal is a lead portion of a coil wound around the winding frame. And a mounting portion extending from the connecting portion in the protruding direction and being bent, and the width of the mounting portion is 1.0 to 2.0 mm, and A winding frame with pin terminals, wherein the width of the connecting portion is 2 to 5 times the width of the mounting portion.