JPH0117824Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Technical field of invention] This invention relates to a plug device.

[Technical background of the invention]

For example, there is a plug device for a television receiver as shown in FIG. This suppresses the inflow of noise signals from the outside into the electronic device via the power cord, and also prevents the power cord from acting like an antenna and emitting unnecessary radio waves. It was developed for this purpose and has a filter built into the plug body 11. The filter is constructed by winding wires 14 and 15 around cylindrical magnetic bodies 12 and 13, respectively. Each winding 14, 15 is connected to the electric wire 1 on the cord 16 side.
One end is connected to electrode blades 7 and 18, respectively, and the other end is connected to corresponding electrode blades 19 and 20.

[Problems with background technology]

According to the conventional plug device described above, there is a problem that the filter function of the filter portion cannot be fully exerted. In other words, since the two coils formed by winding a magnetic material are completely separated, it is difficult to relatively position the coils when molding the plug body 11, and due to mutual induction between the coils, stable capacitance cannot be achieved. is no longer obtained and the filter performance is not stabilized. Furthermore, since the winding coils are arranged approximately parallel to the electrode blades and cords, if external force is applied to the electrode blades or cords, the windings may come undone from the magnetic material or the core wires of the cords may become disconnected from the windings. There is a drawback that the soldered part of the wire may break.

[Purpose of invention]

This idea was made in view of the above circumstances, and it is possible to stabilize the winding condition, improve filter performance and reliability, and also prevent damage to the filter from external tension. The purpose is to provide a plug device.

[Summary of the idea]

In this invention, a ring-shaped magnetic material is used in the filter part, and a hook member is used in the soldered part to the core wire of the power cord.

[Embodiments of the invention] Hereinafter, embodiments of the invention will be described in detail with reference to the drawings.

In FIG. 2, reference numeral 21 represents a plug body, and the portion indicated by the dashed line is molded from synthetic resin (insulating material). The base end portions of two electrode blades are embedded in this plug body 21 portion, and a filter portion 22 is also embedded and fixed. Filter section 2
2 is a ring-shaped magnetic body 23 and a winding 2 wound around it.
It consists of 4,25. One end of each of the windings 25 and 26 is soldered to the base end of the electrode blades 27 and 28, and the other end of each of the windings 25 and 26 is soldered to the core wire 3 of the cord 29.
1 and 32 are soldered.

By the way, to show the filter section 22 in more detail, it is constructed as shown in FIG.
5 and the core wires 31, 32, hook members 33, 34 are used. For example, a ring-shaped metal is used as the hook member, and the core wires 31 and 32 are wound once around the magnetic body 23 through the hook members 33 and 34, respectively. The core wires 31 and 32 are wound while being covered with an insulating tube, and their tips are just connected to each hook member 3.
3 and 34 are fixed to the conductive tips of the windings 24 and 25 by solders 35 and 36. Next, in the magnetic body 23 between the hook members 33 and 34,
A spacer 37 made of insulating material is attached to prevent the hook members 33 and 34 from being molded in close contact when the plug body 21 is molded. As the insulating material spacer 37, for example, a part of a vinyl pipe vertically divided is used.

The hook member is not limited to the above-mentioned embodiment, but may be a member as shown in FIGS. 4 to 7. FIGS. 4 to 7 are explanatory diagrams mainly showing examples of hook members, with solder as a fixing material omitted. In the case of FIG. 4, the core wire 31 and the terminal conductor of the winding 24 are sufficiently wound around the hook member 41. The embodiment shown in FIG. 5 is an example in which the hook member 42 is in the form of a clip, and the conducting wires of the winding input section and output section of the core wire 31 and the terminal conducting wire of the winding 24 are integrally held. In the case of the embodiment shown in FIG. 6, an 8-shaped hook member 43 is used, and when the core wire 31 winds the magnetic material 23, the winding input section and the winding output section are connected to the hook member 43. This is an example of locking in each of the 43 holes. FIG. 7 shows an example using an S-shaped hook member 44. In the embodiments shown in FIGS. 4 to 7 as well, the winding wire, core wire, and hook member are fixed by solder.

Further, FIGS. 8 and 9 show other embodiments of the annular magnetic body, and FIG. 8 shows a rectangular magnetic body 45,
FIG. 9 shows an elliptical magnetic body 46. As shown in FIG.

[Effect of idea]

According to the above-mentioned plug device of this invention, since the first and second windings are wound around opposing parts of the annular magnetic body, the state of each coil changes during molding. In addition, the coil positioning becomes easy, and the filter performance is improved and reliability is improved, as well as the manufacturing cost is reduced. Furthermore, a hook member is used to connect the winding and the core wire of the power cord, and at least one of the core wires is
Since the wire is wrapped around a part of the magnetic material, even if an external force is applied to the cord, it is difficult to apply that external force directly to the soldered part, eliminating wire breakage and solder separation, making it stable and reliable during and after manufacturing. becomes more sexual.

[Brief explanation of drawings]

Fig. 1 is a structural explanatory diagram showing a conventional plug device, Fig. 2 is a structural explanatory drawing showing an embodiment of this invention, Fig. 3 is a partially enlarged view of Fig. 2, and Figs. 6 and 7 are views showing other embodiments of the hook member, and FIGS. 8 and 9 are views showing other examples of the annular magnetic body, respectively. 23,45,46...Annular magnetic body, 24,25
... Winding wire, 29 ... Cord, 31, 32 ... Core wire, 33, 34, 41, 42, 43, 44 ... Hook member.

Claims (1)

[Scope of utility model registration request] In a plug device in which the bases of the first and second electrode blades and the tip of the power cord are molded with an insulating material, an annular magnetic body embedded in the molded part and the magnetic body face each other. first and second windings, each of which is wound with an insulating coating on each section, and whose conductive wires at one end are connected to the bases of the first and second electrode sections; and a first winding that constitutes the power cord. , in order to wind a part of the magnetic material while the second core wire remains insulated, first and second hook members locking each winding input part and output part, and this first . An insertion plug device, characterized in that the second hook member is provided with solder which connects and fixes each of the corresponding windings and the conductive wire of the core wire at each location of the second hook member.