JPH0530335Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a coil frame applied to electromagnetic devices such as discharge lamp ballasts.

[Background technology]

FIG. 5 shows a conventional coil frame in which a winding part for winding a coil wire is formed between flange parts, and a terminal is formed on the outer end surface of the flange part. That is, this coil frame includes a coil frame main body 31 having a winding part 30,
A plurality of terminals 33 are arranged in a row in the same direction as the winding direction of the winding part 30 on the outer end surface of the flange part 32 of the coil frame main body 31, and each terminal is formed in the flange part 32 corresponding to the terminal 33. The coil wire guide groove 34 has one end opened on the terminal 33 side and the other end opened on the winding part 30 side. In the terminal 33, the connection terminal 35 for the winding start end of the coil wire 36 is set on the end side, and the winding start of the coil wire 36 is passed through the coil wire guide groove 34 of the connection terminal 35 for the winding start end. Wrap it around 30.

In this case, if the winding start end connection terminal 35 is set at the center of the terminal 33, the coil wire 36 will be supported by the side surface of the coil wire guide groove 34 as shown in FIG. Winding part 30
Since the coil wire 36 is wound around the coil wire 36, the coil wire 36 may move upward along the side surface of the coil wire guide groove 34, and in that case, there is a risk that it will come into contact with the winding wire to be wound later and damage the coating of the coil wire 36. be. Therefore, as described above, the connection terminal 35 for the winding start end is set at the end side of the terminal 33.

However, this coil frame requires a coil wire guide groove 34 for each terminal 33, and the connection terminal 35 for the winding start end is placed on the end side, which limits the terminal arrangement and prevents lead wires from connecting with other electrical components. The disadvantage was that the wiring was complicated.

On the other hand, Utility Model Application No. 59-89510, Utility Model Application No. 59
-89525, the coil wire guide groove was formed diagonally so that the connection terminal for the winding start end could be set at the center, but the coil wire guide groove was diagonally formed. Due to the shape, it is not easy to guide the coil wire into the coil wire guide groove, making it difficult to wind it with a winding machine, and when there are many terminals, the shape becomes complicated, making it difficult to manufacture the coil frame. The drawback was that the molds for this process were expensive.

[Purpose of invention]

The purpose of this invention is to provide a coil frame in which the forming terminal for the winding start end can be set closer to the center, the number of coil wire guide grooves can be reduced, the coil wire can be guided easily, and the coil frame can be easily formed. .

[Disclosure of invention]

The coil frame of this invention includes a coil frame main body having a rectangular cylindrical winding part formed between opposing flange parts, and a winding of the winding part on the outer end surface of the flange part of this coil frame main body. a plurality of terminals arranged in a row in the same direction and with a connecting terminal for the winding start end positioned closer to the center; a coil wire guide groove having a wide opening such that one side of the end is located at a corner of the winding part;
a coil wire guide groove protruding from the surface of the flange portion corresponding to a terminal adjacent to the winding start end connection terminal on the winding direction side of the coil wire passed through the coil wire guide groove; It is something.

According to the configuration of this invention, the opening is formed wide so that one side of the opening on the winding part side of the coil wire guide groove of the formed terminal for the winding start end is located at the corner of the winding part. Even if the connection terminal for the winding start end is set closer to the center of the terminal, the coil wire can be prevented from floating upwards from the side of the groove, and the wide width makes it easy to guide the coil wire. The winding start part easily falls into place and is prevented from intersecting with the coil wire to be wound later. Further, since a coil wire guide portion is provided protruding from the surface of the flange portion corresponding to a terminal adjacent to the connection terminal for the winding start end, which is on the winding direction side of the coil wire passed through the coil wire guide groove, the coil wire There is no contact even if the terminals intersect with each other, and furthermore, the coil wire guide groove for the adjacent terminal can be omitted. Therefore, the connection terminal for the winding start end can be set closer to the center, the number of coil wire guide grooves can be reduced, the coil wire can be guided easily, and the shape is simple, making it easy to mold.

Embodiment A first embodiment of this invention will be described based on FIGS. 1 to 3. That is, this coil frame includes a coil frame main body 4 having a winding part 3 formed between opposing flange parts 1 and 2, and a winding part on the outer end surface of the flange part 1 of this coil frame main body 4. A plurality of terminals 6 are arranged in the same direction as the winding direction of 3 and have a connecting terminal 5 for the winding start end located near the center, and a plurality of terminals 6 are formed on the flange part 1 and one end 7a is for the winding start end. A coil wire guide groove 7 having a narrow opening in the connection terminal 5 and a wide opening so that the other end 7b reaches the corner of the winding part 3, and a coil wire 8 passed through the coil wire guide groove 7. Coil wire guide portions 9 and 10 are provided that protrude from the surface of the flange portion 1 in correspondence with the terminal 6' adjacent to the connection terminal 5 for the winding start end on the winding direction side.

The coil frame main body 4 is applied to a discharge lamp ballast which is an electromagnetic device, particularly a leaky single-turn type ballast of a rapid start type discharge lamp lighting circuit for two lamps in series. For this reason, the winding part 3 of the coil frame body 4 is wound with the secondary coil 16, and the winding part 11 for the primary coil is provided integrally with the winding part 3 in the axial direction, and the winding part 3 for the primary coil is provided on the side opposite to the winding part 3. A plurality of terminals 12 are provided at the end. In addition to the primary coil 13, three filament coils (not shown) for high voltage, low voltage, and common use are wound around the primary coil winding portion 11. Further, the coil frame main body 4 has a rectangular tube shape, and the winding portion 3 and the primary coil winding portion 11 are also formed in a rectangular tube shape. In addition,
14 is a guide groove.

A plurality of the terminals 6 are formed in one row as shown in FIG. 16a and for connecting the coil wires 8' and 15 from the primary coil 13 side.

The wide opening at the other end 7b of the coil wire guide groove 7 is set such that one side thereof is located at a corner of the rectangular cylindrical winding section 3. Therefore,
The winding start portion of the coil wire 8 is easily accommodated in a predetermined position and is supported by the bottom surface of the coil wire guide groove 7, thereby preventing it from intersecting with the coil wire to be wound later.

The coil wire guide parts 9 and 10 are implemented as protrusions.

The winding start end of the coil wire 8 is connected to the winding start end connection terminal 5, passed through the coil wire guide groove 7, and wound around the winding part 3. At this time, the coil wire 8 is
Since the wire begins to be wound in a direction perpendicular to the plane of the paper, the wire is wired along the bottom of the coil wire guide groove 7 and does not move upward from the side surface. Further, the coil wire 8' from the primary coil 13 side to the adjacent terminal 6' is connected through between the coil wire guide portions 9 and 10. In this case, an insulation distance H corresponding to the groove height of the coil wire guide groove 7 is secured between the coil wire 8 and the coil wire 8' (FIG. 2).

According to this embodiment, the connection terminal 5 for the winding start end
Since one side of the opening on the side of the winding part 3 of the coil wire guide groove 7 is formed wide so that the opening is located at the corner of the winding part 3, the connection terminal 5 for the winding start end is connected to the inside of the terminal 6. Even if the coil wire 8 is set closer to the center, the coil wire 8 can be prevented from floating upward from the side surface of the groove, and since it is wide, the coil wire 8 can be easily guided, and the winding start part of the coil wire 8 can be easily wound. Coil wire 8 that fits into a predetermined position and is wound later
intersecting with is obstructed. Further, the coil wire guide portions 9 and 10 are connected to the flange portion 1 in correspondence with the terminal 6' adjacent to the connection terminal 5 for the winding start end, which is on the winding direction side of the coil wire 8 passed through the coil wire guide groove 7. Since the coil wire 8' is protruded from the surface, even if the coil wire 8' crosses the coil wire 8, it will not come into contact with the coil wire 8, and furthermore, the coil wire guide groove 7 for the adjacent terminal 6' can be omitted. Therefore, the winding start end contact terminal 5 can be set closer to the center, the number of coil wire guide grooves 7 can be reduced, the coil wire 8 can be easily guided, and the shape is simple, which facilitates molding.

Therefore, there are no restrictions on the terminal arrangement, and it is possible to arrange the terminals as desired, and the lead wires connected to the terminals 6 and the like can be routed smoothly. Further, automatic winding by a winding machine is possible, and there is no adverse effect such as peeling off of the coating of the coil wire 8.

A second embodiment of this invention is shown in FIG. That is, this coil frame is arranged in the coil wire guide groove 7.
The width of the opening is increased from the central part toward the winding part 3 side, whereas the opening at the other end 7b is gradually increased from the winding start end connection terminal 5 side.

Note that the number of adjacent terminals 6' is not limited to one, but may be two, and in addition to the coil wire of another coil, the terminal 6' may also be the end of the winding of the coil wire 8 wound around the winding section 3. .

[Effect of idea]

According to the coil frame of this invention, the opening is formed wide so that one side of the opening on the winding part side of the coil wire guide groove of the connection terminal for the winding start end is located at the corner of the winding part. Even if the connection terminal for the winding start end is set closer to the center of the terminal, the coil wire can be prevented from floating upwards from the side of the groove, and the wide width makes it easy to guide the coil wire. The beginning of the winding easily falls into place and prevents it from intersecting with the coil wire to be wound later. Further, since a coil wire guide portion is provided protruding from the surface of the flange portion corresponding to a terminal adjacent to the connection terminal for the winding start end, which is on the winding direction side of the coil wire passed through the coil wire guide groove, the coil wire There is no contact even if the terminals intersect with each other, and furthermore, the coil wire guide groove for the adjacent terminal can be omitted. Therefore, the winding start end contact terminal can be set closer to the center, the number of coil wire guide grooves can be reduced, the coil wire can be easily guided, and the shape is simple, making molding easier.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the first embodiment of this invention, Fig. 2 is an enlarged perspective view of the main part, Fig. 3 is a plan view of the state where the coil wire is starting to be wound, and Fig. 4 is the second embodiment. , and FIGS. 5 and 6 are partial perspective views of the conventional example. 1, 2...flange part, 3...winding part, 4...
Coil frame body, 5... Connection terminal for winding start end, 6
...terminal, 6'...adjacent terminal, 7...coil wire guide groove, 7a...one end, 7b...other end, 8...
Coiled wire, 9, 10...Coil wire guide section.

Claims (1)

[Scope of utility model registration request] A coil frame body having a rectangular cylindrical winding part formed between opposing flange parts, and a coil frame body arranged in a row in the same direction as the winding direction of the winding part on the outer end surface of the flange part of the coil frame body. and a plurality of terminals with the connection terminal for the winding start end located closer to the center,
a coil wire guide groove formed in the flange portion, one end of which is narrowly opened to the winding start connection terminal, and the other end of which has a wide opening located on one side of the winding portion; a coil wire guide groove protruding from the surface of the flange portion corresponding to a terminal adjacent to the winding start end connection terminal on the winding direction side of the coil wire passed through the coil wire guide groove; coil frame.