JPS59182173A - Dividedly winding bobbin - Google Patents

Abstract

PURPOSE:To prevent generation of disconnection of a crossover track on a dividedly winding bobbin by forming a slit for crossover track in the vicinity of a winding drum which has a square section and a curved corner part. CONSTITUTION:After a wire is wound onto the winding drum 1a in the uppermost part, the wire is inserted into a slit 4, using a turn-end part as crossover track 5, and the wire is led-out onto the continuous winding drum 1b side. Then, the crossover track 5 is extended along the surface of the winding drum 1b without being sharply bent, and winding can be started easily. Therefore, generation of disconnection due to the tension acting in the crossover track 5 is prevented, and collapse of winding due to running-over of the wire onto the crossover track is suppressed. As for the slit 4, the part in contact with the winding drum on the turn-end side is opened close to the surface part 6 of the winding drum 1a, and the part in contact with the winding drum on the turn-starting side is positioned oppositely to a corner part 2, and the intermediate part is formed in oblique form, and therefore, even if the apparent width of the slit is made narrow, the crossover track can be inserted favourably.

Description

[Detailed description of the invention] The present invention relates to improvements in split winding bobbins.

In the known bobbin of this type, a slit is formed in the intermediate collar to allow the crossover wire to pass through, and the sleeves 1 to 1 are formed at positions opposite to the surface of the winding drum having a rectangular cross section. Therefore, when winding wire is wound around one winding drum and the wire is inserted through the slit in the intermediate flange and led out to the adjacent winding drum, the wire is bent sharply and the tension acting on the wire causes There is a drawback that the wire may break, or when there are a large number of windings, the crossover wire portion may be pushed up by the windings and breakage, or the winding may ride on the crossover wire and the winding collapses.

The present invention is characterized in that a slit for a crossover wire is provided near the winding drum, which has a rectangular cross section and curved corners.

The details of the invention will be explained below with reference to the illustrated embodiments.

Fig. 1 is a partially sectional/cutaway front view of a split winding bobbin showing two intermediate flanges, and Fig. 2 is a sectional view taken along IT-]IT in Fig. 1. In the figure, 1 is a rectangular cross section. The winding drum has a corner portion 2 having a curved surface, 3 is an intermediate flange, and 4 is a sleeve 1 provided on the intermediate flange 3.

The slit 3 is disposed near the corner portion 2 of the winding drum 1 so as to face each other. Although the figure shows two intermediate flanges 3 and three winding drums, the present invention is not limited to this.
Any number of intermediate flanges can be provided as needed. Further, it goes without saying that end flanges can be provided at both ends of the bobbin as appropriate.

After winding the winding on the uppermost winding drum 19 in Fig. 1,
When the end of the winding is passed through the slit 4 as a connecting wire 5 and led out to the side of the adjacent winding drum 1b, the connecting wire 5 is inserted into the winding drum without being bent sharply, as shown in FIG. 1b
Since it extends along the surface of the winding, winding can be started easily. Therefore, the crossover wire 5 will not break due to the tension acting on the crossover wire 5. In addition, since the winding start part of the winding on the winding drum 1b side is in close contact with the surface of the winding drum 1b, the crossover wire may be wound up and break due to fear of the winding, or the winding may ride on the crossover wire and the winding trunk may break. It never occurs.

In addition, as shown in the figure, in the sulins 1 to 4, the part in contact with the winding drum on the winding end side is opened toward the surface part 6 of the winding drum 1tL, and the part in contact with the winding drum on the winding start side is directly facing the corner part 2. By arranging the slit so that the slit is located at an angle, and forming the intermediate portion obliquely, the crossover wire can be inserted well even if the apparent width of the slit is narrowed.

As detailed above, the present invention uses a split winding bobbin having a winding drum with a square cross section with curved corners, and a slit is formed in the intermediate flange facing the vicinity of the corner.
Breakage of crossover wires and winding warp can be effectively prevented.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a partially sectional/cutaway front view, and FIG. 2 is a sectional view taken along the line 1--2 in FIG. 1... Winding drum 2... Corner portion 3... Intermediate flange 4... Slit Patent applicant Toshiba Electric Materials Co., Ltd. 1 Agent Patent attorney Small No. 1) Hiroo Yoshi 2 Procedures Tadashi Neyama 111 (Voluntary) 1. Indication of the case Showa Zoto patent application No. f-1, 3'i'ρ. 3. Relationship with the case of the person making the amendment Patent applicant: 1-1-13 Shibaura, Minato-ku, Tokyo (375) Former Toshiba Electric Corporation Representative: Inu Roku Sato (and other names) 4. Agent: 210 Kanagawa 72 Horikawa-cho, Saiwai-ku, Kawasaki City, Toshiba Electric Corporation, Horikawa-cho Office

Claims (2)

[Claims] (1) A split winding bobbin characterized by comprising: a winding drum having a rectangular cross section and a curved corner; and an intermediate flange having a sling 1 disposed oppositely in the vicinity of the corner. . (2) In the above-mentioned sleeves 1 to 1, a crossover wire is introduced from a position near one surface of a pair of adjacent winding drums with an intermediate flange Iυ,
A bobbin without division, characterized in that the intermediate collar is formed obliquely in a cross section along a plane parallel to the bobbin axis so as to lead out to the other corner.