JPH0356021Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a coil device that can be used, for example, as an excitation coil of a pulse motor or the like, a detection coil for detecting the rotational state of a motor, or the like.

(b) Prior Art In a coil device in which a coil wire is wound in an annular groove of a coil bobbin, as disclosed in Japanese Utility Model Application Publication No. 60-96962, a lead wire connected to the coil end of the coil wire is Fitting into the coil wire winding direction groove of the lead wire fixing base integrally formed on the flange of the coil bobbin forming the annular groove, a peripheral adhesive tape is applied to the outer surface of the wound coil and on the lead wire fixing base. By winding the lead wire, the tensile force of the lead wire is relieved by the fitting force of the lead wire fixing base and the adhesive force of the tape.

(c) Problems to be solved by the invention In the conventional device described above, the tensile force of the lead wire can be alleviated by the adhesive force of the tape, etc., but for larger tensile forces, the tension of the coil wire A tensile force is applied directly to the connection between the coil end and the lead wire, which may damage the connection. In addition, winding adhesive tape has poor work efficiency, and furthermore, when connecting the coil end to the lead wire without fixing the coil wire, the wound coil wire is unwound in the annular groove, resulting in poor work efficiency. There are drawbacks.

The present invention has been devised in view of this point, and allows the coil end and lead wire to be connected while the wrapped coil wire is fixed.
It is an object of the present invention to provide a coil device in which the tensile force of a lead wire is not easily applied to a connecting portion thereof.

(d) Means for Solving the Problems The coil device of the present invention consists of a bobbin body in which three flanges form two annular grooves in which coil wires are respectively wound, and a bobbin body formed by three flanges on the circumference of the flanges at both ends. a support plate that is formed integrally with the coil wire and is bent so as to bridge each of the central flanges after winding the coil wire, and a holding groove that is provided on each support plate and that inserts and holds the coil end of each coil wire. , a common connector base to which lead wires connected to each of the coil ends are fixed, and a coupling portion provided on a central flange portion for coupling the connector base.

(e) Effect The coil end of the coil wire wound in the annular groove is held in the holding groove of the support plate, so in this holding state, the coil end can be connected to the lead wire of the connector stand. , the already wound coil wire does not become unwound during the connection.

Further, since the connector to which the lead wire is fixed is connected to the joint of the bobbin collar, the tensile force of the lead wire is difficult to be applied to the joint between the lead wire and the coil end.

In addition, the connector base that connects each coil end of the two coil wires is shared, and the connector base is connected to the central flange that is approximately equidistant from each coil wire, so each coil end can be fixed once. In addition, compared to, for example, connecting a connector stand to a flange near the end, it prevents the coil end (lead wire) of one coil wire from extending above the other coil wire.

(f) Examples An embodiment of the present invention will be described based on the drawings.

FIG. 2 is a front view of the bobbin body. Also the third
The figure is a - sectional view of FIG. In these drawings, 1 and 1 are bobbin bodies, and annular grooves 3 and 3 for winding a coil wire 2 are formed with flanges 4 and 5 at both ends, and in the embodiment, two bobbin bodies 1 are provided. , 1 are integrally formed, and a common central flange 5 is formed thicker than the flange 4 located on both end surfaces.

On the circumference of each of the flanges 4, 4 located on the end surface, when the coil wire 2 is wound, the same surface as each of the flanges 4 is formed,
After the coil wire 2 is wound, a support plate 6 is integrally formed to be bent to bridge the central flange 5. As shown in FIG. 4, each of the support plates 6, 6 has a holding groove 8 for individually holding each coil end 7 of the coil wires 2, 2 by penetrating the front and back sides of the support plate. They are set according to the number of books. Further, each support plate 6 is provided with a thin hinge portion 9 at its base end so as to be bent approximately at right angles to the respective flanges 4, 4. Further, each support plate 6, 6 has a central flange portion 5 when bent.
Each of the protruding pieces 10 has a slit 12 that is hooked to a locking pin 11 provided on the central flange 5, respectively.

After winding the coil wire 2 in the annular groove 3,
Insert and hold the coil end 7 of the coil wire 2 into each holding groove 8 of the support plate 6, bend the support plate 6, and fit the slit 12 of the protrusion 10 into the latching pin 11 as shown in FIG. The coil wire 2 is held in a wound state.

Reference numeral 13 designates a connector base in which lead wires 14 corresponding to the number of coil ends 7 are fixed so as not to come off, and the coil ends 7 of the coil wires are connected to the ends of the lead wires protruding from the bottom surface of the connector base to form a connecting portion 15. ,
The connecting portions 15 are press-fitted into recesses 16 provided on both sides of the lower surface of the connector base 13, respectively. A coupling protrusion 17 is provided at the center of the lower surface of the connector base 13, and a recessed hole 18 as a coupling portion provided in the central collar 5 of the bobbin body 1 is provided.
Press fit into the connector base 1 as shown in Figure 1.
3 to the bobbin body 1.

(g) Effects of the invention The present invention provides a support plate that is bent at one end of the flanges forming the annular groove of the bobbin body so as to bridge the other flanges, and a retaining groove provided on this support plate. In order to hold the coil end of the coil wire wound in the annular groove, when connecting the coil end to the lead wire, the coil wire will not be wound back in the annular groove, and the lead wire will not be wrapped around the connector base. Since the connector base is connected to the joint provided on the collar, the assembly workability of the coil device is improved compared to conventional devices, and the tensile force of the lead wire is reduced.
This has great practical effects, such as making it difficult for the lead wire to connect with the coil end and reducing damage to the connection compared to conventional devices.

In addition, the connector base that connects each coil end of the two coil wires is shared, and the connector base is connected to the central flange that is approximately equidistant from each coil wire, so each coil end can be fixed once. In addition, it is possible to prevent the coil end (lead wire) of one coil wire from extending above the other coil wire, compared to, for example, connecting the connector stand to a collar portion near the end.

Therefore, the assembly work can be simplified, and 2
Even though two coil wires are placed adjacent to each other, electrical accidents such as short circuits can be prevented.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view of the coil device, Fig. 2 is a front view of the bobbin body,
3 is a cross-sectional view taken from FIG. 2, FIG. 4 is an enlarged perspective view of the support plate, and FIG. 5 is a front view of the bobbin main body showing a state in which the coil end is connected to the lead wire. DESCRIPTION OF SYMBOLS 1... Bobbin body, 2... Coil wire, 3... Annular groove, 4, 5... Flange part, 6... Support plate, 7... Coil end, 8... Holding groove, 10... Projection piece, 11
... Latching pin, 12 ... Slit, 13 ... Connector stand, 17 ... Protrusion, 18 ... Recessed hole.

Claims (1)

[Scope of utility model registration request] The bobbin body has two annular grooves formed by three flanges, into which the coil wires are respectively wound, and the two annular grooves are integrally formed on the circumference of the flanges at both ends. A support plate bent to form a bridge, a holding groove provided on each support plate for inserting and holding the coil ends of each coil wire, and a common connector base to which lead wires connected to each coil end are fixed. A coil device comprising: a coupling portion provided on a central flange portion and coupling the connector base.