JPH0587914U - Coil with pin terminal - Google Patents

Abstract

(57) [Abstract] [Purpose] The end of the winding frame due to the springback of the winding end that occurs when the winding end of the coil with pin terminals for forming transformers, coils, etc. is tangled to the pin terminals and soldered A coil with pin terminals that prevents soldering failure due to floating from the flange surface. [Structure] A coil with a pin terminal formed by winding a winding wire around a bobbin and soldering a pin terminal 3 planted in the end flange 2 to a barb 10 at the end of the winding. A coil with a pin terminal is provided by implanting a pin terminal 3 provided with a collar 11 at a position lower than the standoff height attached to the lower surface of the bobbin to a pin terminal apart from the surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a coil with a pin terminal that constitutes a coil, a transformer, etc., and particularly relates to the structure of the pin terminal.

[0002]

[Prior Art]

 Figure 4 shows an external view of a common mode choke coil with pin terminals for a noise filter, which is turned upside down. In this type of coil with a pin terminal, the pin terminal 3 is formed by insert-molding the pin terminal 3 in the lower thick portion of the end collar 2 of the winding frame 1 or by press-fitting a bottomed hole in advance. The winding 4 and the winding 5 are wound around the bobbin 1 by using an automatic winding machine, and the winding ends are entwined to the pin terminals 3 and fixed by soldering to connect them to form two U-shapes. The magnetic core 6 was assembled to the bobbin 1 and held by the tightening metal fitting 7. The loose connection portion 8 is formed at the base of the pin terminal 3, and has a height lower than that of the standoff piece 9.

[0003]

[Problems to be solved by the device]

 If the end of the wire is twisted to the pin terminal by applying the same tensile stress as when it is wound, the wire may be broken when the wire is soldered. For that reason, the tensile stress is weakened and pulled. The barb is gradual enough to slide along the pin terminals, so the wire rod that extends to the barb acts as a spring. FIG. 5 is an enlarged side view of the longitudinal section of the A-section shown in FIG. 4 taken along the line BB. As shown in FIG. 5, the barb 10 separated from the face of the end collar 2 is indicated by the one-dot chain line. Since the part of the wire acts as a spring, the barb 10 sometimes lifted from the root as shown by the alternate long and short dash line in FIG. As shown in FIG. 2, when soldering is applied to the raised barb 10, the connection portion with the pin terminal of the soldered barb 10 connected to the pin terminal 3 projects from the standoff height as shown in FIG. The coil is defective because it cannot be mounted properly on the board. Conventionally, all the barbs of the reel 1 are manually inspected, and the floating barbs 10 are pushed down by the tip of a bamboo skewer in the direction of the end collar 2 as shown by the arrow in FIG. After moving to the root of the pin terminal on the end flange surface shown in, the soldering process was started. Both the inspection and the floating correction work are troublesome, and there is a problem that a lot of manpower is required.

[0004]

[Means for Solving the Problems]

 In order to eliminate the loosening correction of entanglement in the pin terminal, install a collar larger than the pin terminal diameter at a position farther from the end flange surface on the pin terminal, and place a winding end between the flange and the end flange surface. Even if the bark floats, the barb will not protrude beyond the tsuba, and the part where the rice barge will be attached will not be higher than the height of the standoffs provided on the end tsuba. The brim is located within the allowable height of the splice connection part because it is dipped in the solder at the same time when soldering the splice. The position of the tsuba must be set slightly lower than the height of the standoff height, usually within 1 mm to 2 mm.

[0005]

[Action]

 Coil with pin terminal that can be twisted even if the winding end that is twisted to the pin terminal floats due to springback due to the elasticity of the winding end, does not protrude beyond the tsuba, and does not have a floating correction work Can be

[0006]

【Example】

 FIG. 1 shows an embodiment in which the pin terminal portion of the coil with a pin terminal according to the present invention is enlarged. A pin having a collar 11 mounted at a position slightly higher than the upper surface of the end collar 2 having the pin terminal implanted therein. Due to the shape of the terminal 3, the barb 10 at the end of the winding is lifted from the surface of the end flange 2, but is locked by the flange 11 and formed so as not to project more than the end flange surface. Therefore, the amount of floating after soldering is small, and as shown in FIG. 1, it is possible to solder the cord at a position lower than the standoff piece height shown by the alternate long and short dash line in the state where the cord is connected. Although the embodiment of the present invention has been described in the case of a coil with a pin terminal using a bobbin with a pin terminal, the present invention arranges a wound toroidal coil on a terminal base plate with a pin terminal, and It can also be applied when connecting the winding ends to the pin terminals.

[0007]

[Effect of the device]

 Inspecting all the barbs on the winding end to the pin terminals by installing the flange on the pin terminal at a position far from the end flange surface of the pin terminal planted in the end collar of the present invention. Since the end of the winding can be soldered to the pin terminal without fail and it can be automated, the pin terminal of the present invention can reduce the production cost by eliminating the inspection and correction manpower, and it is inexpensive. It is possible to provide a coil with a pin terminal.

[Brief description of drawings]

FIG. 1 is an enlarged side sectional view of an essential part showing an embodiment of the present invention.

FIG. 2 is a side sectional view having the same name as FIG. 1 showing a conventional example.

FIG. 3 is a side sectional view having the same name as FIG. 1 showing a conventional example.

FIG. 4 is an external perspective view showing an example of a coil with pin terminals according to the present invention.

FIG. 5 is a side sectional view having the same name as FIG. 3 showing a conventional example.

[Explanation of symbols]

 1 Winding frame 2 End flange 3 Pin terminal 4, 5 Winding 6 U-shaped magnetic core 7 Tightening metal fitting 8 Barging connection part 9 Standoff piece 10 Barbaring 11 Tsuba

Claims (1)

[Scope of utility model registration request] 1. In a coil with a pin terminal in which a winding terminal is wound around a winding frame and the winding terminal is entwined with a pin terminal planted in the end collar and soldered to the tang, the end terminal flange surface is separated. A coil with a pin terminal, characterized in that a pin terminal provided with a collar is provided at a position lower than the height of the standoff attached to the lower surface of the bobbin.