JPS60249303A - Coil bobbin - Google Patents

Abstract

PURPOSE:To simplify and make automatic the connection of a coil winding at the assembly of a coil bobbin by integrally providing a connector which externally connects the wound coil winding with a bobbin. CONSTITUTION:A connector 15 externally connects a coil winding 4 wound around a bobbin 2 and connector pins 16A-16C are provided to connect each end 4a of the coil winding 4. The upper ends of the connector pins 16A-16C are above the connector 15 and the lower ends are in the recessed part 15a provided at the bottom of the connector 15. The connector pins 16A-16C are simultaneously inserted in the part of the connector 15 at the time of assembly of the bobbin 2.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a coil bobbin, and more particularly to a motor,
The present invention relates to a coil bobbin that is widely used in various electromagnetic devices such as solenoids and has an improved connection structure for connecting the coil winding to the outside.

[Prior Art 1] FIG. 1 shows the structure of a coil bobbin used in a pulse motor as an example of a conventional coil bobbin of this type.

The bobbin body 2 of the coil bobbin I is entirely made of an insulating material, and has disc-shaped flanges 2a at both ends.

The collar 2a is formed into a cylindrical shape with a circular hole 2b passing through its center.

A coil winding 4 in which a coil wire 3 is wound is wound 9 on the outer periphery of the cylindrical portion between 2a.

Next, FIG. 2 shows a structure in which the above-mentioned coil bobbin I is mounted on a pulse motor.

In the example shown in the figure, two coil bobbins l are mounted in a stake 5 of a pulse motor that fixes the coil bobbins l.

The terminals (not shown) of the coil windings 4, 4 of both coil pobbins 1, 1 are connected to lead wires 6.6, respectively, and the respective coil windings 4 are connected to each other via these lead wires 6.6.
, 4 are sequentially applied in accordance with the phase excitation order, thereby rotationally driving the rotor 7 which is dividedly magnetized in the circumferential direction.

By the way, in assembling the conventional coil bobbin 1 mentioned above, the winding of the coil winding 4 on the bobbin body 2 and the connection of the terminal and the lead wire 6 are performed as shown in FIGS. 3(a) to (C). ing.

That is, first, as shown in FIG. 3(a), two coil wires 3, 3 are aligned from the supply reels 8, 9, each having a coil wire 3 wound thereon, and wound around the cylindrical portion 2C of the bobbin body 2.

Next, as shown in FIG. 3(b), the coil wire 3 is attached to the cylindrical portion 2C.
. ) as shown in terminal 13, and the remaining terminal 10 above.
．． 11 as terminals 12 and 14, and then the aforementioned lead wires 6 are connected to these terminals 12 to 14, respectively.

However, in the above process, the connection of the terminals 10 and 11 and the connection of the terminals 12 to 14 and the lead wires 6 involve aerial wiring between wires, which is extremely difficult to automate, increases costs, and requires long connections. The disadvantage was that the ratio was poor.

This drawback is common not only to coil bobbins for pulse motors but also to coil bobbins widely used in other electromagnetic devices.

[Purpose] The present invention was made in order to eliminate the above-mentioned conventional drawbacks, and provides a coil bobbin that can automate the process of connecting the terminals of coil windings during assembly, thereby reducing costs and improving reliability. is intended to provide.

[Example] Hereinafter, details of an example in which the present invention is applied to the above-mentioned coil bobbin for a pulse motor will be described with reference to the drawings from FIG. 4 onwards. In each figure, the same or corresponding parts as in FIGS. 1 to 3 are given the same reference numerals, and explanations of the same parts will be omitted.

FIGS. 4(a) to (C) show the coil bobbin 1 according to this embodiment.
This shows the structure of the main parts.

In the case of this embodiment, the entire bobbin body 2 is made of PBT, for example.
It is integrally molded from an insulating material with good moldability, such as PC. Also, as shown in these figures, unlike the conventional case, a connector 15 is provided continuously on the outer periphery of the outer surface of one tail 2a.
Opposed to this, on the outer periphery of the outer surface of the other tail 2a'' is a projection 2d for locking and fixing the connector 15, and a connector 15 locking on both sides of the projection 2d. A guide portion 2e for regulating the movement from both sides.

2e is provided protrudingly.

The connector 15 is a coil winding 4 wound around the bobbin body 2.
For this purpose, connector pins 16A to 16C are implanted to connect each terminal 4a of the coil winding 4. The upper ends of these connector pins 16A to 16c as seen in FIGS. 4(b) and 4(C) face the connector 15, and the lower ends thereof face into the recess 15a formed in the lower side of the connector 15. In addition, connector pin 16A~
16c is the connector 1 at the same time when the bobbin body 2 is integrally molded.
5 is inserted and implanted.

Further, a hinge portion 15b continuous with one tail 2a of the bobbin body 2 is formed at one end of the connector 15, and a hook portion 15b for engaging with the aforementioned protrusion 2d of the other tail 2a' is formed at the other end. 15c is provided protrudingly.

Next, the coil winding 4 is wound onto the bobbin body 2 having the above structure.
The winding, connection of the terminal 4a, fixing of the connector 15, and connection with the outside will be explained with reference to FIGS. 4(a) to 5(c) and FIGS. 5(a) to 5(c).

First, as in the conventional example, the coil wire 4 is wound by winding the coil wire material a predetermined number of times around the cylindrical portion of the bobbin body 2, and then each end of the coil winding 4 is wound as shown in FIG. 4(b). Connect each of the connector pins 16A to 16c of the connector 15 by soldering or the like. In the case of a coil bobbin for a pulse motor, as mentioned earlier, two coil wires are wound at the same time on the bobbin body 2, one of the two terminals on the winding start side and two terminals on the winding end side. The two terminals 4a, 4a are commonly connected to the connector pin 16B.

Here, the connection of each terminal 4a described above is not by aerial wiring between wires as in the conventional example described above, but by connecting the connector pins 4a to each other.
6A-16c, and since the connecting portions of connector pins 16A to 16C are open as shown in Figure 4(b) during connection, the connection work can be easily performed, automated, and has a good connection ratio. can be increased.

Next, after the above connection, the hinge portion 15b of the connector 15 is bent and the connector 15 is rotated in the direction shown in FIG. 4(b). As shown in (b), connect the hook portion 15c of the connector 15 to the bobbin body 2.
Engage with the protrusion 2d of Nobba 2a'. In this case, the hook portion 15c is fitted between the guide portions 2e and 2a and is configured to be regulated in both directions by the guide portions 2e and 2e, and due to this regulation and the above-mentioned engagement, the connector 15 is fitted between the ribs 2a and 2a. It is fixed in a state where it bridges over 2a'.

Next, by fitting the external connector 17 connected to the lead wires 6 shown in FIGS. 5(b) and 5(c) into the four parts 15a of the connector 15, Connector pins 16A to 16G of the connector 15 are connected to the female contact members (not shown), and the coil winding 4 is connected to the external lead wire 6 via the connector pins 16A to 16G and the female contact members.

In the above configuration, the connector 15 is fixed by an engagement structure, but other structures such as a structure in which the bending of the hinge part 15b itself is held by the plasticity of the hinge part 15b of the connector 15 and fixed, or a structure in which the connector 15 is fixed by adhesion may be used. A structure, a structure that is a combination of these structures, etc. may be used.

Furthermore, the configuration of the connector pins 16A to 16c of the connector 15 is not limited to the above-mentioned configuration. For example, as shown in FIGS. The terminal 4a may be made into a common terminal by bifurcating the connection side with the terminal 4a and connecting one terminal 4a to each of the connecting portions 18 and 19. It goes without saying that the number of connector pins may also be limited to three.

Furthermore, the arrangement of the connector pins 16A to 16C is not limited to that shown in F. For example, as in the case of the coil bobbin 1 shown in FIG. They may be placed side by side on top.

Next, a structure for mounting a coil bobbin on a pulse motor according to this embodiment will be explained with reference to FIGS. 8 and 9.

FIG. 8 shows the mounting structure of the coil bobbin according to the detailed one in FIGS. 4 and 5, and FIG. 9 shows the connector pin 16A.
This shows a mounting structure of a modification that combines FIGS. 6(a) and 7(b) and FIG. 7 in the configurations 16G to 16G.

As shown in FIG. 8, FIG. 9, and the above-mentioned FIG.
A groove 15d is formed on both sides of the connector 15 on the side perpendicular to '.
15d is formed.

And as shown in Fig. 8 and Fig. 9, the coil bobbin 1.1
When actually installed in the stator 5 of a pulse motor, the connector 15.15 is fitted into a hole formed in the stator 5,
The connector 15.15 is fixed by fitting the periphery of the hole into the grooves 15d, 15d. Further, as shown in the same figure, by fitting the aforementioned connector 17.17 into the recesses 15a, 15a of the connector 15.15, the ends 4a of the coil windings 4, 4 of the coil bobbin 1.1 are connected to the connector 15.17. ．． It is connected to a control circuit (not shown) via a lead wire 6.

As mentioned above, various modifications of this embodiment can be considered in terms of the fixing structure of the connector, the structure of the connector pins, the mounting structure, etc., but in short, as long as the connecting member for connecting the coil winding to the outside is provided integrally with the bobbin body. The simple and inexpensive structure simplifies and automates the process of connecting the coil winding terminals during assembly, and improves the rate of successful connections.

The structure of the present invention is of course applicable not only to coil bobbins for pulse motors, but also to coil bobbins widely used in electromagnetic devices such as solenoid magnets and synchronous motors.

[Effects] As is clear from the explanation below, the coil bobbin of the present invention has an extremely simple and inexpensive structure in which the connecting member for connecting the wound coil winding to the outside is provided integrally with the bobbin body. This makes it possible to simplify and automate the work of connecting the coil windings during the assembly of the coil bobbin, thereby reducing the cost and improving the reliability of the coil bobbin.

[Brief explanation of the drawing]

Figure 1 is a schematic perspective view of a conventional coil bobbin, Figure 2 is a partially cutaway perspective view showing the mounting structure of a conventional coil bobbin, and Figures 3 (a) to (C) are coil windings according to the conventional structure. 4 (a) to (C
) are partial front views showing the main structure of the coil bobbin. Partial side view and partial front view on the opposite side, Fig. 5(a) ~
(C) is a partial front view, a partial side view, and a partial front view of the opposite side with the connector of the coil bobbin fixed, respectively. Figures 6 (a) and (b) are modified examples of the configuration of the connector bin. A partially cutaway side view and a partially front view to explain the
FIG. 7 is a perspective view for explaining another modification, and FIGS. 8 and 9 are a partially broken perspective view and a partially sectional view for explaining the mounting structure. 1... Coil bobbin 2... Bobbin body 2a,
2a'...Brim 2d...Protrusion 2e...Guiding part 4...Coil winding 6...Lead wire 15.17
... Connector 15b... Hinge part 15 c-° Hook part 16A-16C... Connector pin J: l, ff to PI. Go to -1 (CI) Figure 5 Figure 8 Figure 9

Claims (1)

[Claims] l) A coil bobbin characterized in that a connecting member for connecting the installed coil winding to the outside is integrally provided in the bobbin body. 2) the connecting member has a spigot portion that is continuous with the bobbin body;
The coil bobbin according to claim 1, further comprising an engaging portion that engages with the bobbin body, and the connecting member is fixed onto the bobbin body via the hinge portion and the engaging portion.