JP2540675Y2 - Coil bobbin - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil bobbin used in a consumer transformer.

[0002]

2. Description of the Related Art FIG.
The winding 8a is wound as shown in FIG.

[0003]

In this case, the lead wire 8 at the end of winding is usually located on the side of the flange 3 opposite to the flange 2 on which the pin terminal 4 is implanted, and the lead wire 8 is provided.
In the process (1), it is necessary to temporarily stop the winding operation of the winding 8a, fix it with the tape T while fixing the position of the lead wire 8 so as not to shift, and bring it to the pin terminal 4 side. There was a problem that sex was poor.

[0004] This invention has been proposed in view of the above, and its purpose is to expand the inner diameter to make mounting easier.
A simple, and to provide a coil bobbin having a spacer that facilitate processing of the lead lines of the winding end of the coil.

[0005]

The present invention is directed to a coil bobbin comprising a bobbin with pin terminals 5 and an intermediate bobbin 6 with a margin spacer incorporated on a lower winding wound around the bobbin 5. Has a connecting portion 10 around which the winding 8a is wound, and a pair of spacers 7 integrally formed at both ends of the connecting portion 10 to function as margin spacers. A hook 9 for hooking the end wire 8 at the end of the winding is protruded from the spacer 7 located on the side of the spacer 8 , and the inside of the spacer 7 is partially provided on one side of the spacer 7.
A notch 7a whose diameter can be expanded is formed and
The above object is achieved by forming a hinge 7b which can be bent in a substantially U-shape on the other side .

[0006]

In the present invention, in the coil bobbin 1 comprising the bobbin 5 with the pin terminal and the intermediate bobbin 6 with the margin spacer combined therewith, the intermediate bobbin 6 located on the lead wire 8 side at the end of winding of the winding 8a. Since the lead wire hooking portion 9 is provided on the spacer 7 and the lead wire 8 is hooked by the work and brought to the opposite pin terminal 4 side, workability is good and automation is easy. It is suitable for mass production. In the present invention, the inner diameter of the spacer 7 is
Form a notch 7a for pushing and expanding,
Therefore, it is easy to fit the coil bobbin 1 and the workability is good.
And Further, a hinge 7b is formed on the spacer 7.
Then bend it to make it easier to spread
It can be installed even from

[0007]

FIG. 1 shows a first embodiment of the present invention. This coil bobbin 1 has flanges 2 and 3 formed at both ends, respectively, and a pin terminal 4 is implanted on one flange 2. A bobbin 5 with a terminal and an intermediate bobbin 6 with a margin spacer, which is mounted between the flanges 2 and 3 of the bobbin 5 with a pin terminal and is also commonly called a skeleton,
Spacer 7 for margin of intermediate bobbin 6 with margin spacer located on flange 3 side opposite pin terminal 4 side
Are provided with a plurality of hooks 9 for hooking the end wire 8 at the end of the winding.

After winding the winding 8a around the intermediate bobbin 6, the leading wire 8 at the end of the winding is hooked outside a predetermined hooking section 9 via a work (not shown) of the automatic winding machine. In addition, the pin terminal 4 is routed toward the flange 2 side where the pin terminal 4 is implanted, led out through the extraction groove 2a, and tied to the root of the pin terminal 4 for processing. Therefore, the lead wire 8 at the end of winding can be processed at a stroke in a series of operation steps such as winding the coil 8a around the winding drum using an automatic winding machine.

FIG. 2 is a perspective view showing the relationship between the bobbin 5 with pin terminals of the coil bobbin 1 and the intermediate bobbin 6 with a margin spacer. The intermediate bobbin 6 has a skeletal shape, and a connecting portion 10 around which a coil is wound, and a connecting portion 10
, And a plurality of pin-shaped lead wire hooking portions 9 protruding from a plurality of upper portions of one of the spacers 7, and one side of each of the spacers 7. A notch 7a whose inner diameter can be expanded is formed substantially at the center of the portion, and a hinge 7b which can be bent in a substantially U-shape is formed at the other side opposite to this.

The bobbin with pin terminal 5 comprises a hollow bobbin having flanges 2 and 3 at each end, and a bobbin 11 having
11 consisting of thick portions formed at both ends of the
a, 11b, and a pin terminal 4 implanted in one flange 2 along the longitudinal direction of the winding drum portion 11;
A lower winding (not shown) is wound between a pair of steps 11a and 11b which function as a margin spacer, and an insulating tape is provided on the outer peripheral surface of the steps 11a and 11b or on the outer peripheral surface of the lower winding. (Not shown) is wound.

The intermediate bobbin 6 with a margin spacer is incorporated in the bobbin 5 with a pin terminal. In mounting, the inner diameter of each spacer 7 is widened through the notch 7a and the hinge 7b, and the stepped portions 11a, 11b are arranged in the direction perpendicular to the axial direction of the bobbin 5 with pin terminals, that is, in the lateral direction as indicated by arrows. As shown in FIG. 1, the upper winding 8a is wound between the pair of stepped spacers 7 on the connecting portion 10 on the winding drum portion 11 having FIG. 3 shows a partial cross section thereof. Thus, the transformer can be completed by winding an insulating tape thereon and incorporating an iron core as is well known. It is also possible to fit another intermediate bobbin (not shown) having a larger inner diameter of the spacer portion, and to form a multilayer winding such as a lower winding, a center winding, and an upper winding.

FIG. 4 shows a second embodiment of the present invention. That is, in the above-described first embodiment, when the coil bobbin 5 is viewed from the outside of the flange 3, the hook 9 protrudes, so that the appearance is not good. Therefore, a part of the flange 3 is raised substantially in a U-shape and a protruding part 3a protruding outward is formed. Further, a protruding part 7c housed therein is formed on the spacer 7, and a protruding part 7c is formed on the protruding part 7c. The hook 9 is provided so that the hook 9 is hidden when viewed from outside the flange 3. In this case, the protrusion 3a and the hook 9
Needless to say, a gap g large enough to accommodate the nozzle of the work of the automatic winding machine is secured between the two. Thus, as an incidental effect of this example, it is possible to obtain a sufficient creepage space distance between the iron core (not shown) and the lead wire 8 at the end of the winding hooked on the hooking portion 9 by the protrusion 3a. it can.

[0013]

As described above, in the present invention, the winding 8a wound between the spacers 7 in the bobbin 5 with the pin terminal in which the intermediate bobbin 6 with the margin spacer is incorporated.
Is formed on the spacer 7 located on the side of the flange 3 opposite to the pin terminal 4, so that the processing of the lead wire 8 becomes extremely easy, and the workability is improved. effective. Also, the coil bobbin of the present invention
The spacer 7 of the intermediate bobbin 6 with a margin spacer
On one side, a notch 7a capable of expanding the inner diameter is formed,
On the other side opposite to the side forming the notch 7a,
Because the hinge 7b that can be bent in the shape of a letter is formed,
The inner diameter can be expanded and easily attached to the coil bobbin 1.
Intermediate bobbin 6 can be attached and workability is good.
Has an effect.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a partial sectional view of an assembled state.

FIG. 4 is a perspective view of a second embodiment of the present invention.

FIG. 5 shows a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Coil bobbin 2, 3 ... Flange 2a ... Extraction groove 3a ... Projection part 4 ... Pin terminal 5 ... Bobbin with pin terminal 6 ... Intermediate bobbin 7 ... Spacer 7a ··· Notch 7b ··· Hinge 7c ··· Projecting portion 8 ··· Lead wire 8a ··· Winding 9 ··· Hooking portion 10 ··· Connection portion 11 ··· Winding body portion 11a 11b ・ ・ ・ Stepped

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 52-69520 (JP, U) JP-A 1-107116 (JP, U) JP-A 55-34659 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A coil bobbin (1) comprising a bobbin (5) with a pin terminal and an intermediate bobbin (6) with a margin spacer incorporated on a lower winding wound around the bobbin (5). (6) is a winding (8
a) is wound around the connecting portion (10) and the connecting portion (1).
0), a pair of spacers (7) integrally formed on both ends of the windings (8), functioning as margin spacers, and the windings (8).
A hook (9) for hooking the end wire (8) is projected from the spacer (7) located on the side of the end wire (8) of the end of (a) , and one side of the spacer (7) is provided. Some inside
A notch (7a) capable of expanding the diameter is formed.
Hinge (7b) that can be bent in a substantially U-shape on the other side facing
A coil bobbin characterized by forming: