JPH06290974A - Gear choke coil - Google Patents

Abstract

PURPOSE:To connect the begining and end of the coil winding and a pin terminal on a terminal base using a split type cylindrical bobbin with a gear and the pin terminal of a terminal block easily. CONSTITUTION:A split type cylindrical bobbin 2 with a gear incorporated to the central magnetic leg of a 'square'-shaped core 1 has structure, in which rectangular parallelopiped projecting pieces in the same width as the thickness of the core 1 are formed at the two positions of the central symmetry of the outer circumferential surfaces of both end section collars 7 and short-sized conductive rods 11 are protruded integrally to the side faces of the projecting pieces in the same direction as the radial direction. A terminal block 3 has structure, in which sockets 14 are bored in the same array as the conductive rods to a bobbin mounting surface and the other ends are provided droopingly and buried in pin terminals 13 using one ends as the sockets 14. Start ends are bound with the conductive rods 11 and a bobbin 2 is rotated and winding is conducted, and terminals are bound with the conductive rods 11. The conductive rods 11 are inserted and jointed with the sockets 14 and the core 1 and the terminal block 3 are fixed in the coil. Accordingly, automatic binding is performed to the conductive rods 11 before and after winding, windings are manufactured, and the conductive rods 11 and the sockets 14 are joined easily, thus manufacturing the title gear choke coil at low cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board-mounted gear choke, which is used as an electromagnetic noise prevention element and uses a frame-shaped closed magnetic circuit core, a split type cylindrical winding frame with gears and a terminal block with pin terminals. It is about coils.

[0002]

2. Description of the Related Art Usually, it is not easy to make a winding on a closed magnetic circuit core. The split type cylindrical reel (hereinafter referred to as reel) is attached to the magnetic legs of the frame-shaped closed magnetic circuit core, and the winding can be rotated with high efficiency by rotating the reel. It is called a gear choke coil because a gear is integrally formed on the reel to rotate the reel. Since the winding of a split type cylindrical bobbin with windings has an outer shape that cannot be stably installed as it is, it is put into practical use as a board mount type in combination with a frame terminal block with pin terminals.

In a conventional gear choke coil, a core and a winding frame assembly are wound, a winding is temporarily fixed to the terminal block, and the winding is assembled to a terminal block to form a winding start end and a winding end. By assembling the core and winding frame assembly to the terminal block, fixing the core to the terminal block, winding the wire, and then automatically twisting the terminal to the pin terminal. After the connection, the starting end of the winding was twisted to the pin terminal and connected to the terminal.

[0004]

As described above, since there is a step of manually twisting the pin terminals both in the case of assembling the terminal block afterwards and in the case of pre-assembling, the productivity is raised to a high level. The defects that cannot be made and the shape and size of the barb are different,
There was a defect that defects occurred. The barb at the beginning of the winding is
First, it is necessary to loosen the start of the winding from the reel and pull it out, which is also a drawback that automation is difficult.

[0005]

A split type cylindrical reel with a gear is provided with conductive rods at two locations which are symmetrical with respect to a diameter of an outer peripheral portion of at least one of the flanges, a central collar, and the central collar. The terminal block has a structure in which it is integrally projected in the same direction as the radial direction, and the terminal block has a structure in which the embedded end of the vertically extending pin terminal is rolled up and extended to the installation surface, and the terminal block is opened in the same arrangement as the conductive rod. The start-up of the winding and the end of the winding are entwined with a conductive rod, and the conductive rod is inserted into the receiving port of the pin terminal to be joined, and assembled to the terminal block to fix the core to the terminal block.

That is, according to the present invention, a split type cylindrical winding frame with a gear is attached to a magnetic leg of a closed magnetic circuit core such as a J-shaped core, and the split type cylindrical winding frame is rotated to perform winding. In a gear choke coil fixed to a terminal block with a terminal and connecting a winding start end and a winding end to a pin terminal, the diameter of the outer circumference of at least one collar of the split type cylindrical bobbin is 2 symmetrical.
Conductive rods are integrally projected in the same direction in the radial direction, and the pin terminal of the terminal block has a receiving port at the end opposite to the vertical end, which corresponds to the conductive rod on the winding installation surface. With the structure in which the receiving opening is buried in the arrangement, the conductive rod with the winding start and end windings is inserted and joined to the receiving opening provided in the terminal block, and the winding is attached to the magnetic leg of the closed magnetic circuit core. A gear choke coil characterized in that a wire-lined cylindrical winding frame is fixed to a terminal block and combined with the terminal block.

[0007]

[Function] The conductive rod provided on the flange of the reel realizes the start and end barbs before and after winding the reel by winding,
Conducts electrical connection between the winding and the pin terminal in cooperation with the pin terminal receiving port.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 (a) shows the appearance of a common mode gear choke coil, and FIG. 1 (b) is a letter-shaped core (hereinafter referred to as the core) 1 in FIG. FIG. 1C is an external view of the terminal block 3 in which the frame 2 is assembled. The core 1 is a letter-shaped ferrite core, and has a size such that a winding can be attached to the central magnetic leg 4 and rotated. The bobbin 2 is a split type cylindrical bobbin with a gear with a gear 5. The bobbin 2 has thick end flanges 7 at both ends of a cylindrical winding core 6, and a central brim 8 around the center of which the gear 5 is provided in the middle. A partitioning collar 9 is provided inside the winding and is divided into two along the axial direction.

The end flange 7 has a rectangular parallelepiped projecting piece 10 having the same thickness as the end flange 7 and the same width as the thickness of the core 1 integrally formed at the center of the divided outer peripheral surface (semicircular surface). The conductive rod 11 is provided on the side surface of the rectangular parallelepiped projecting piece 10 in the same radial direction.
Are projected integrally.

As shown in FIG. 1B, the winding frame 2 is attached to the central magnetic leg 4 of the core 1 so that the four conductive rods 11 are oriented in the same direction.

The terminal block 3 has a frame shape slightly larger than the outer dimensions of the core 1, and the rectangular central through hole 12 has a size such that one arc portion of the winding frame 2 protruding from the main surface of the core 1 can be loosely fitted. is there. As shown in FIG. 1 (c), four pin terminals 13 are integrally embedded in the terminal block 3, and the pin 14 is formed in the vicinity of the four corners of the rectangular central through hole 12 on the upper surface at a position corresponding to the conductive rod 11, and the receiving port 14
Are provided so as to open, and the bottom surface is hung in a required arrangement.

As shown in the enlarged perspective view of FIG. 2, the pin terminal 13 is a molded conductor having a receiving port 14 with a crack 15 at its upper end. The receiving port 14 is sized so that the conductive rod 11 and a barbed portion (not shown) formed at the base thereof can be fitted therein.

The assembled product of the core 1 and the winding frame 2 is mounted on the winding device in the posture shown in FIG. 1 (b). For example, the conductive rod 11 on the right side of the right front (one) end flange 7 in the figure is entangled with the starting end of the winding of the wire extending from the wire nozzle (not shown), and then the reel 2 is rotated to partition the brim. Windings 16 on both sides of 9 (Fig. 1
(See (a)), and the end of the winding is entangled with the remaining (left side) conductive rod 11 of the same end collar 7 and separated from the line nozzle.

Windings 17 (see FIG. 1A) are formed in the same manner on the end flange 7 and the winding section on the left back (other side) of FIG. 1B. As shown in FIG. 1A, after the solder paste is applied to the wound barbed portion, the conductive rod 11 is placed on the lower side and inserted into the receiving port 14, and the core 1 is placed on the upper surface of the terminal block 3. After fixing with adhesive, reflow soldering is performed. The conductive rod 11 and the receiving port 14 are joined, the windings 16 and 17 and the pin terminal 13 are electrically connected, and a gear choke coil is completed.

[0015]

With the above-mentioned structure,
The work of manually twisting the end of the winding to the pin terminal can be eliminated, making it easy to apply the automation device in the previous process,
A gear choke coil can be manufactured with extremely high efficiency and at low cost.

[Brief description of drawings]

1 shows a gear choke coil of the present invention, FIG.
FIG. 1A is an external perspective view of a gear choke coil of the present invention, and FIG. 1B is an external perspective view showing an assembly of the date-shaped core and the geared split type cylindrical reel in FIG. 1A. , Figure 1
FIG. 1C is an external perspective view showing the terminal block in FIG.

FIG. 2 is an external perspective view showing the structure of a pin terminal implanted in a terminal block.

[Explanation of symbols]

 1 Day-shaped core 2 Split type cylindrical reel with gear 3 Terminal block 4 Central magnetic leg 5 Gear 6 Cylindrical core 7 End flange 8 Central flange 9 Inner winding partition flange 10 Rectangular parallelepiped protrusion 11 Conductive rod 12 Square central through hole 13 pin terminal 14 receptacle 15 split 16 and 17 winding

Claims (1)

[Claims] 1. A split type cylindrical winding frame with a gear is attached to a magnetic leg of a closed magnetic circuit core such as a J-shaped core, and the split type cylindrical winding frame is rotated to perform winding. In a gear choke coil that is fixed to a terminal block and connects the start end and end of the winding to pin terminals, conduct electricity to two locations symmetrical to the diameter of the outer peripheral portion of at least one collar of a split type cylindrical reel with gear. The rods are integrally projected in the same direction in the radial direction, and the pin terminals of the terminal block are provided with receiving ports at the ends opposite to the vertical ends, and the receiving ports are opened in an array corresponding to the conductive rods on the winding installation surface. A split type cylinder with a gear that is embedded by inserting a conductive rod with the winding start and end windings into the receptacle provided in the terminal block, and attaching the winding to the magnetic leg of the closed magnetic circuit core. A gear chain characterized in that the winding frame is fixed to the terminal block and formed in combination with the terminal block. York coil.