JPH0620009B2 - Coil bobbin - Google Patents

Description

TECHNICAL FIELD The present invention relates to a coil bobbin, and more specifically to a motor,
The present invention relates to a coil bobbin having an improved connection structure with the outside of a coil winding wound in a coil bobbin widely used in various electromagnetic devices such as solenoids.

[Prior art]

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 main body 2 of the coil bobbin 1 is entirely formed of an insulating material, has disk-shaped collars 2a, 2a at both ends, and is formed in a cylindrical shape having a circular hole 2b penetrating between the centers thereof. The coil winding 4 around which the coil wire 3 is wound is wound around the outer circumference of the tubular portion between the collars 2a.

Next, FIG. 2 shows a structure in which the coil bobbin 1 is mounted on a pulse motor.

In the case of the example shown in the figure, two coil bobbins 1 are mounted in the stator 5 of the pulse motor that fixes the coil bobbins 1. The terminals (not shown) of the coil windings 4 and 4 of both coil bobbins 1 and 1 are connected to lead wires 6 and 6, respectively.
Each of the coil windings 4, 4 through the lead wires 6, 6.
A motor excitation current is applied to the motor 4 in the phase excitation order, so that the rotor 7 divided and magnetized in the circumferential direction is rotationally driven.

By the way, in the assembly of the conventional coil bobbin 1 described above, the winding of the coil winding 4 around the bobbin main body 2 and the connection of the terminal and the lead wire 6 are performed as shown in FIGS. 3 (a) to 3 (c). There is.

That is, first, as shown in FIG. 3A, two coil wire rods 3, 3 are aligned from the supply reels 8, 9 on which the coil wire rod 3 is wound, and wound around the tubular portion 2c of the bobbin main body 2.

Next, as shown in FIG. 3 (b), the coil wire rod 3,
3 is wound a predetermined number of times to wind the coil winding 4, and then one of the winding start side terminals 10 and 10 and the winding end side terminals 11 and 11 of FIG. The terminals 13 are connected as shown in FIG.
1 as terminals 12 and 14, and then these terminals 1
The above-mentioned lead wires 6 are connected to 2 to 14, respectively.

However, in the above steps, the connection work between the terminals 10 and 11 and the connection work between the terminals 12 to 14 and the lead wire 6 is performed in the air between the wires, so automation is extremely difficult, cost is high, and the connection state is good. There was a drawback that the ratio was bad.

This drawback is not limited to the coil bobbin for the pulse motor, but is common to coil bobbins widely used in other electromagnetic devices.

〔Purpose〕

The present invention has been made to solve the above-mentioned conventional drawbacks, and an object of the present invention is to provide a coil bobbin capable of automating the process of connecting the ends of the coil winding during assembly, reducing costs and improving reliability. I am trying.

〔Example〕

Hereinafter, details of an embodiment in which the present invention is applied to the coil bobbin for the pulse motor described above will be described with reference to the drawings starting from FIG. In each drawing, the same or corresponding parts as in FIGS. 1 to 3 are designated by the same reference numerals, and the description of the same parts will be omitted.

4 (a) and 4 (b) are a partially broken sectional view and a partially front view, respectively, showing the structure of the main part of the coil bobbin 1 according to this embodiment.

As shown in both figures, in the case of the present embodiment, unlike the prior art, a connector 15 for connecting each end 4a of the coil winding 4 to the outside is provided on the collars 2a, 2a of the bobbin main body 2. Then, the connector 16 connected to the external lead wire 6 is connected.

The connector 15 has a brim 2a, which has a fitting structure described below.
It is fitted and fixed on 2b with a touch.

That is, as a fitting structure, the connector 15 has leg portions 15a, 15a at the lower portions on both outer sides in FIG.
15b is formed, and recesses 15c, 15c are formed on the inner side surfaces of the legs 15a, 15a.

On the other hand, the collars 2a, 2a are provided with protrusions 2d, 2d near the outer periphery of the outer peripheral surface and guide portions 2e, 2e on both sides thereof.

As shown in both figures, by fitting the outer peripheral portions of the collars 2a, 2a into the groove portions 15b, 15b of the connector 15, the protrusions 2 of the collars 2a, 2a are inserted into the concave portions 15c, 15c of the connector 15.
d, 2d are engaged with each other, and the play of the connector 15 in the left-right direction in FIG. 4 (b) is restricted by the guide portions 2e, 2e, so that the connector 15 is fitted and fixed on the collars 2a, 2a. .

On the other hand, the connector 15 has three connector bins 17A in this case.
.About.17C are vertically inserted and planted, and each terminal 4a of the coil winding 4 is connected to the lower ends of these connector pins 17A to 17C. Further, the upper ends of the connector pins 17A to 17C are exposed in a recess 15d provided in the upper portion of the connector 15, and the connector 16 is fitted into the recess 15d, so that each of the connectors provided in the connector 16 is provided. It is connected to a female contact member (not shown) connected to the lead wire 6.

According to the structure of the coil bobbin 1 as described above, the coil winding 4 is attached to the connector pins 17A to 17C of the connector 15.
The terminal 4a is connected to the terminal 4a, and this connection is different from the conventional one and does not depend on the aerial wiring between the lines, so that the connection process can be automated.

The coil winding 4 in the coil bobbin 1 of this embodiment will be described below.
An example of the winding process and the connecting process of the terminal 4a of the coil winding 4 will be described with reference to FIGS. 5 (a) to 5 (c).

Before describing the steps, each configuration in these figures will be described. The reference numerals 8 and 9 are supply reels for supplying the same coil wire 3 as described above. Further, reference numerals 18 and 1
Reference numerals 9 respectively denote follower pulleys for guiding the coil wire 3. One follower pulley 18 is supported via a belt 20 by an arm 23 fixed to the shaft of a pulley 22 rotated by a motor 21. Further, reference numeral 24 is an automatic welding machine for connection. The above-described connector 15, which is schematically shown here, is held on a base 25, and the base 25 is supported by an arm 26 rotated by a motor 29 via a pulley 27 and a belt 28. .

In the above configuration, first, as shown in FIG. 5 (a), the coil wire rods 3, 3 guided from the supply reels 8, 9 through the follower pulley 18 are wound around the tubular portion 2c of the bobbin main body 2 to prevent the bobbin main body 2 from being unscrewed. The coil wire rods 3 are wound around the cylindrical portion 2c a predetermined number of times by the drive means shown in the drawing to rotate as indicated by the arrow A, and are wound as the coil winding 4 described above. Thereafter, as shown in the same figure, the winding start ends 3A, 3B of the coil wire rods 3, 3 (that is, the above-mentioned end 4a) are guided onto the connector 15 via the follower pulley 19, and the automatic welding machine 24 is indicated by an arrow B. Then, the terminals 3A and 3B are connected to the connector pins 17A and 17B of the connector 15.

Next, as shown in FIG. 5 (b), the motor 21 is driven to rotate the arm 23 in the direction of arrow C through the belt 20 and the pulley 22 to move the follower pulley 18 to the position shown by the dotted line. Supply reels 8 and 9 and bobbin body 2
The coil wire 3 between them is moved to the position shown by the chain double-dashed line as indicated by the arrow D, and the terminals 3C and 3D on the winding end side are moved onto the connector 15 and then the automatic welding machine 24 is operated to operate the terminals. Connect 3C and 3D to connector pins 17B and 17C.

Next, as shown in FIG. 5 (c), the motor 21 is driven to rotate the arm 26 and the base 25 through the belt 27 and the pulley 26 in the arrow E direction, so that the connector 15 is indicated by the arrow F. The bobbin body 2 as shown by the chain double-dashed line, and the bobbin body 2 is rotated in the direction of arrow G to move the coil wire rod 3 between the bobbin body 2 and the connector 15
3 is wound on the bobbin main body 2.

After that, the collar 2a of the bobbin main body 2 and the connector 15 are fitted to each other at the above-mentioned fitting positions, and the connector 15 is pressed downward by means (not shown). Fixed.

Of course, the structure for winding and connecting as described above is not limited to the above, and for example, the mechanism for moving the follower pulley 18 and the base 25 may be constituted by another mechanism such as a link mechanism. good.

Next, a structure for mounting the coil bobbin 1 of this embodiment on the above-described pulse motor will be described.

In this case, as shown in FIG. 6, the brim 2 of the connector 15
Grooves 15e, 15e for fitting with the stator of the pulse motor are formed on both outer surfaces of the connector 15 on the side orthogonal to a and 2a.

When the coil bobbins 1 and 1 are mounted in the stator 5 of the pulse motor as shown in FIG.
15 is fitted into a hole formed in the stator 5, and the connectors 15 and 15 are fixed by fitting the peripheral edge of the hole into the grooves 15e and 15e. Further, as shown in the figure, in the concave portions 15d, 15d of the connectors 15, 15, the above-mentioned connector 16,
By fitting 16, the ends of the coil windings 4 and 4 of the coil bobbins 1 and 1 are connected to the connectors 15 and 16 and the lead wire 6.
Is connected to a control circuit (not shown) via.

In the configuration of the coil bobbin of the present embodiment described above, the connector 17B of the connector pins 17A to 17C of the connector 15 has two terminals 3B and 3C of the coil wire (two terminals 4a and 4a of the coil winding 4). ) Are connected in common, but the lower end side of the connector pin 17B may be bifurcated as shown in FIG. 8, and one of the terminals 3B and 3C may be connected to the lower ends 30 and 31, respectively. Of course, the number of connector pins is not limited to three according to the configuration of the coil winding 4.

Further, the arrangement of the connector pins 17A to 17C is not limited to the arrangement along the straight line substantially orthogonal to the collars 2a, 2a of the bobbin main body 2 as in the case of the above-mentioned embodiment, and of course, the ninth embodiment can be used, for example. As in the case of the connector 15 of the coil bobbin 1 mounted on the pulse motor shown in the figure, connector pins 17A to 17
C may be arranged along a straight line parallel to the brim 2a of the bobbin main body 2.

Also in this case, the grooves 15e and 15e are formed on the outer surface of the connector 15 as described above, and the connector 15 fitted and fixed to the collar 2a is fitted into the hole a formed in the stator 5 and the groove is formed. It is fixed to the stator 5 by fitting the peripheral edge of the hole 5a into 15e. In addition, connector pins 17A, 17
The connector pin 17B in C has a bifurcated lower end as in the case of FIG. 8, and each connector pin 17A
Terminals 4a of the coil windings 4 are connected to the lower ends of -17C one by one.

In addition to this, as a modified example of the embodiment, the fitting structure of the connector 15 and the bobbin main body 2 is different from that of the embodiment, for example, the structure in which the concave portion and the convex portion are reversed from the embodiment, the fitting structure in the notch, A fitting structure or the like depending on the tightening tolerance may be adopted.

As described above, various modifications of the present embodiment are conceivable. In short, as long as the connecting member (connector 15) for connecting the end of the coil winding to the outside is assembled to the bobbin main body by the fitting structure, the above-mentioned configuration is adopted. Thus, the connection of the terminals of the coil winding 4 can be performed in an automated process.

Of course, the above-described configuration is not limited to the coil bobbin for the pulse motor, but can be widely applied to coil bobbins widely used in other electromagnetic devices.

[Effect]

As is apparent from the above description, according to the coil bobbin of the present invention, the coil bobbin body around which the coil winding is wound, the collar portion formed on the coil bobbin body, and the collar portion are formed in the left-right direction. Is formed separately from the coil bobbin main body, and is fitted to the coil bobbin main body in a state where the guide portion restricts the backlash in the left-right direction, and the coil winding Since the structure of the terminal of (1) and a connecting member for connecting to the outside is adopted, the work of connecting the terminal of the coil winding to the connecting member can be easily and surely performed in a wide space apart from the main body of the coil bobbin. The process of connecting the ends of the coil winding can be automated during assembly. Moreover, the shape and structure of the coil bobbin body and the connecting member are simple,
It can be manufactured at low cost. Further, in the present invention, when the connecting member is fitted to the coil bobbin main body, a guide portion for restricting backlash in the left-right direction is formed in the collar portion of the coil bobbin main body, so that the connecting member and the external connector There is also an effect that the connection process can be performed easily and surely.

[Brief description of drawings]

1 to 3 are views for explaining a conventional coil bobbin, FIG. 1 is a schematic perspective view of the coil bobbin, FIG. 2 is a partially cutaway perspective view showing a mounting structure, and FIG. (c) is an explanatory view sequentially showing the winding process of the coil winding and the connecting process of the terminals, and FIG. 4 and subsequent figures are for explaining the embodiment of the present invention, and FIGS. 4 (a) and 4 (b) are respectively Partially broken side view and partial front view of the main part of the coil bobbin, FIGS. 5 (a) to 5 (c) are explanatory views sequentially showing the winding process of the coil winding and the connection process of the terminals,
FIG. 6 is a perspective view illustrating the groove of the connector, FIG. 7 is a partially cutaway perspective view showing the mounting structure, and FIGS. 8 (a) and 8 (b) are partially cutaway views showing other structural examples of the connector, respectively. A front view and a side view, and FIG. 9 are partial cross-sectional views showing a mounting structure of a coil bobbin according to still another structural example. 1 ... Coil bobbin, 2 ... Bobbin body 2a ... Collar 2d ... Protrusion 2e ... Guide part, 3 ... Coil wire 3A to 3D, 4a ... Terminal, 4 ... Coil winding 6 ... Lead Wires, 15, 16 ...... Connector 15a ...... Legs, 15b ...... Grooves 15c, 15d ...... Recesses, 17A to 17C ...... Connector pins

Claims (1)

[Claims] 1. A coil bobbin main body around which a coil winding is wound, a collar portion formed on the coil bobbin main body, a guide portion formed on the collar portion for restricting play in the left-right direction, The coil bobbin body is formed separately from the coil bobbin body, and is fitted to the coil bobbin body in a state in which play in the left-right direction is restricted by the guide portion, and includes a connecting member that connects the end of the coil winding to the outside. Coil bobbin.