JPS603535Y2 - Bobbin structure - Google Patents

Description

[Detailed description of the invention] The present invention relates to a bobbin structure that facilitates connection of the winding start end and winding end of the coil wound on the bobbin and the lead wire.
It is suitable for bobbins for generators of servo motors, small acoustic transformers, output transformers, etc.

In the conventional bobbin structure, a coil is wound in the annular groove of the bobbin, and the starting and ending ends of the coil are wound around the pull-out lead respectively, and the soldering is fixed, and the coil is fixed in place to prevent the coil from unwinding. Insulating tape is wound and fixed around the outer shell.

Therefore, since the winding start end and winding end are directly connected and fixed to the pull-out lead, the work is difficult, and when connecting the winding start end and winding end to the pull-out lead, a layer short or wire breakage is likely to occur at the connection part. There is.

The present invention has been devised in view of this point, and will be described based on an embodiment in which the invention is applied to a stator of a servo motor generator.

Reference numeral 1 is a resin bobbin, and an annular groove 5 is formed by a central cylinder 2 and flanges 3 and 4 at both ends thereof, and a coil 6 around which a coil wire is wound is formed in the annular groove.

This point is the same as the conventional bobbin, but the feature is that a pair of protrusions 9 and 10 are provided on the side edge of the flange 3 to which the winding start end 7 and winding end 8 of the coil 6 are individually wound and fixed. .

Although the protrusion is provided on the radial side edge of the flange 3 as shown, it may also be provided on the axial side edge, that is, the end surface of the flange 3.

Regarding the winding of the coil 6, it is sufficient to first wind and fix the winding start end 7 around one of the protrusions 9, then wind the coil wire around the annular groove 5, and then wind and fix the winding end 8 around the other protrusion 10. , it is possible to support the winding start end 7 of the coil 6 and also to prevent the coil 6 from unwinding, so that the conventional work of winding an insulating tape can be omitted.

Winding start end 7 of the coil 6 wound and fixed on the protrusion 9° 10
Although the lead-out leads 11 and 12 may be connected directly to the winding end 8, the embodiment includes a terminal plate 15 having a pair of relay terminal members 13 and 14.

The terminal board is formed by a thin printed circuit board on which relay terminal members 13 and 14 are formed by printed wiring, and the holes 16 of the terminal board 15 are connected to the protrusions 17 and 17 of the flange 3.
By fitting into the terminal plate 15, the terminal plate 15 is attached to the flange 3 and positioned.

With this positioning, the proximal end 18 of the relay terminal member 13.14
．． 19 are positioned close to each protrusion 9, 10, respectively.

A winding start end 7 and a winding end 8 are provided on each of the base ends 18 and 19, respectively.
is pulled out and the soldered wire is fixed.

In the embodiment, the base ends 1B and 19 are close to the protrusions 9 and 10, but the base ends 18 and 19 are formed so as to overlap with the protrusions 9 and 10, The winding start end 7 and winding end 8 of the coil 6 may be wound and fixed on the laminated part and soldered.

Further, although the embodiment shows a case in which the relay terminal members 13 and 14 are provided on the terminal plate 15, the relay terminal members may be provided directly on the end face of the flange 3.

Next, 20 and 21 are a pair of yoke members attached to each flange 3 and 4 to enclose the bobbin 1, and a plurality of yoke members meshing with the center hole edge of each yoke member through a gap. teeth 22...23..., and each yoke member 2
At the periphery of 0.21, annular ribs 24 and 25 abut against each other.
has.

As the permanent magnet rotor rotates within the cylindrical space 26 formed by the large number of teeth 22...23..., magnetic flux flows through the pair of yoke members 20, 21, and an induced voltage is generated in the coil 6. occurs, and generator output is obtained.

The yoke members 20, 21 each have a through hole 27, which is connected to each flange 3, 4, . protrusion 17 provided on the outer surface of
. . . from one window 28 provided in one yoke member 20.21 to the pair of protrusions 9, 10 and the proximal end 18.1 of the relay terminal member 13.14.
9 is exposed, and the relay terminal members 13, 1 are exposed from the other window 29.
The tips 30 and 31 of 4 are exposed.

Pull-out leads 11 and 12 are respectively soldered and fixed to the tips.

As described above, according to the configuration of the present invention, a pair of protrusions are provided on the side edges of the flange of the bobbin forming the annular groove for individually winding and fixing the winding start end and the winding end of the fill to be wound in the annular groove. Therefore, when winding the coil, the starting end of the coil can be fixed, making it easier to wind the coil, and the ending end of the coil is also fixed, eliminating the need for unwinding the coil. There is no need to wrap insulating tape around the outer circumference of the cylinder.

Further, in order to provide a terminal board having a pair of relay terminal members individually connected to the winding start end and the winding end that are wound and fixed to each of the protrusions, the existence of the relay terminal members allows the winding start end and the winding end to be connected to the pull-out lead. Since the lead is not directly connected, even when using a thin lead, the lead can be easily connected by connecting the lead to the relay terminal member.

Furthermore, since the hole of the terminal board fits into the protrusion provided on the flange, the terminal board is positioned with respect to the flange, and when pulling the lead connected to the relay terminal member, the tensile force is reduced. It does not apply to the connection between the winding start end or the winding end and the relay terminal member, and this connection is also located away from the coil, so there is no layer short circuit caused by that connection, which has great practical effects. It is.

[Brief explanation of drawings]

The drawing shows one embodiment of the bobbin structure according to the present invention, and the first
The figure is an exploded perspective view, and FIG. 2 is a perspective view after assembly. 5...Annular groove, 1...Bobbin, 3...
...Flange, 6...Coil, 7...
...Start of roll, 8... End of roll, 9,10...
...Protrusion, 13.14...Relay terminal member, 28
, 29...window, 20...yoke member.

Claims (1)

[Scope of utility model registration request] A pair of protrusions are provided on the side edges of the flange of the bobbin forming the annular groove for individually winding and fixing the winding start end and winding end of the coil wound in the annular groove, and the winding start end and winding end of the coil are The bobbin structure includes a terminal plate having a pair of relay terminal members that are individually connected, and a hole that fits into a protrusion provided on the flange is formed in the terminal plate.