JPS6026438A - Coil bobbin with connector - Google Patents

Abstract

PURPOSE:To facilitate the connecting work of lead wirings by engaging a connector with a flapper having an L-shaped lead pin with an annular coil bobbin with a flange, connecting a coil wire with the pin, and overturning the flapper. CONSTITUTION:A coil wire is wound on an annular coil bobbin body 1 with flanges 22a, 22b, and temporarily clamped by a vinyl tape so as not to entangle. An elastically bendable projection 26 is formed at one of the flanges 22a. The projection 26 is engaged with a slot 16 of a connector body 10. The coil wire is soldered to the end 12a of an L-shaped lead pin 12. Then, the body 10 is bent in a direction of an arrow A together with the projection 26 to bridge over between the flanges 22a and 22b by the bottom of the connector 10, A flapper 14 is further bent to engage the projection 18 with the notch 28 of the flange 22b. An external lead is soldered to the end 12b of the pin 12. Thus, the connection to various external lead wirings can be facilitated to enable an automation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an annular coil bobbin suitable for, for example, but not limited to, an excitation coil for a small motor. The present invention relates to a coil bobbin in which a connector part can be integrally coupled with a coil bobbin part for easy connection.

Coils used for excitation of small motors such as Koyukika's chipper motor are generally made of a synthetic resin bobbin with flanges integrally formed at both ends of a toroidal body, and a magnet wire (usually a small diameter of a few tenths of a millimeter) is attached to the bobbin. It has a structure in which enameled wire, etc.) is wound many times. Since it is necessary to supply power to such a magnet wire to form an excitation field, it is naturally necessary to be able to electrically connect the external circuit and the magnet wire.

However, as mentioned above, the magnet wire used in the annular coil for small motors is extremely thin and cannot be pulled out of the motor casing as is. The structure is such that the lead wire can be drawn out.

In other words, according to the prior art, the end of the magnet wire wound around the bobbin is wound around the tip core of the insulated lead wire, and after the soldering process is completed, each connected part is covered with insulating tape. Further, these connecting portions were arranged along the outermost periphery of the magnet wire winding portion and fixed with adhesive tape. In the case of a stepper motor, it is generally bifilar wound, so three lead wires are drawn out from each coil.

However, it is necessary to tie and solder the end of the magnet 1 to the wire to the core wire at the tip of each lead wire, or to align the three separate lead wires and wire them along the magnet wire winding. The work of setting it up and fixing it with adhesive tape is
When you actually do it, you will understand that it is a very complicated task.

In other words, with such conventional technology, it is difficult to automate the terminal processing section, and even if it is done manually, the workability is very poor, reliability deteriorates accordingly, and it is difficult to automate the terminal processing section. There were drawbacks such as difficulty in responding. In addition, when a tensile force is applied to the lead wire for some reason, the lead wire may be pulled from the side of the adhesive tape (low tensile strength). In order to reduce the work involved in soldering the magnet wires together, a configuration has also been proposed in which the magnet wires and lead wires are connected via a flexible printed wiring board with a parallel l1ffi pattern. However, good results have not always been obtained.

The purpose of the present invention is to eliminate the drawbacks and shortcomings of the prior art as described above, to enable automation of the terminal processing section, to make the work extremely easy, to provide high connection reliability, and to reduce the cost of the type. The object of the present invention is to provide a bobbin with a new structure that can be easily compatible with various external lead wires.

The present invention, which was devised to achieve such an object, is a coil bobbin with a connector that combines a flanged annular coil bobbin portion and a connector portion that is attached to and integrated with the annular coil bobbin portion. In addition to devising the shape and orientation of the lead bin to facilitate the installation process, it also ensures insulation at the winding binding part, and sufficiently increases the bonding strength between the connector part and the bobbin part. Various improvements have been made to this.

Hereinafter, the present invention will be explained based on the drawings.

FIG. 1 is an explanatory diagram of the coil bobbin section 1 in J3 of the present invention, and FIG. 2 is an explanatory diagram of the connector section 2 attached thereto. First, as can be seen from FIG. 2, the connector part 2 includes a U-shaped connector main body 10 made of an insulator (for example, synthetic resin such as nylon 66), and magnets 1 to 1.
Wire connection terminal part 12a and external connection terminal part 12b
three lead pins 12 which are continuously formed into an L-shape and are embedded and held in the center of the connector body 10; and an insulating flap 14 which can be bent freely to cover the magnet wire connection terminal part 12a; It has coil cover engaging portions 16 formed on both sides of the connector body 10. Note that a locking protrusion 18 that is a locking portion to the bobbin flange is formed at the tip of the insulating flap 14.
A groove 20 corresponding to each magnet wire connection terminal part 2a is formed on the surface facing the magnet wire connection terminal part 12a of No. 4 so as to partition each magnet wire connection terminal part 12a to some extent. . In this embodiment, the coil cover engaging portion 16 is a groove shaped like a part of the circumference. Furthermore, a fitting notch 21 into which a JJi bent piece of a coil bobbin, which will be described later, is fitted is formed on one end surface of the connector main body 10.

Next, as shown in FIG. 1, the coil bobbin part 1 is fitted with an annular coil bobbin main body 24 having flanges 22a and 22b, one of which is fitted with the connector part 2 at the flange part 22a, and folded inside the bobbin. Flexible bending piece 26
and a locking notch 28 of the insulating flap 14 formed on the other flange 22b facing the flange 22b. Insulating flap 14 and bent piece 2
The bendable structure of No. 6 is created by reducing the thickness of the resin at the bending part and making use of the flexibility of the resin to make it integral with the connector body 10 and the bobbin body 24. be able to.

Next, the assembly process of this coil bobbin will be explained using FIG. 3. First, the coil bobbin part 1 has two magnet wires 4 (so-called bifilar winding in which two magnet wires 4 (enamel wire, etc. with a wire diameter of about a few millimeters or less) are wound a predetermined number of times), and four magnet wire terminals 4.
Take out. Attach vinyl tape 6 to the outer periphery of the winding section to prevent the magnet wire from touching #J. In this state, the bent piece 26 of the bobbin body 24 is fitted into the fitting notch 21 of the connector section 2. The fitting notch 21 has a stepped shape cut diagonally inward, and the inner end of the bend 26 has a diagonally cut shape corresponding to the break, so by fitting the two, the connector part 2 can be combined with the bobbin part 1. In other words, the lead bin 12 of the connector part 2 is connected to the terminal part 1 for connecting the magnet wire.
2a protrudes outward in the radial direction of the bobbin (see A in the figure).

Then, the magnet wire terminal 4 is wound around the upwardly protruding magnet wire connection terminal portion 12a.
=J, perform the soldering process. As is clear from Figure A, each magnet wire connection terminal part 12a faces outward in the fj'l radiation direction of the hobbin part as described above, so the binding and soldering work is extremely OL. It can be done efficiently and smoothly. Of course, since the connector part 2 is positioned by the bent piece 26,
It is also possible to automate the work of binding and soldering the magnet wire terminals 4. Next, J shown in figure B:
Then, stand up the connector body 10. At this time, the bent piece 26 of the coil bobbin portion 1 is fitted into the connector portion 2 and bent approximately 90 degrees without being bent. As a result, the lead bin 12 is connected to the magnetic screw 1 to the wire connection terminal portion 12a.
is folded down to face the height direction of the coil bobbin part 1, and the external connection terminal part 12b projects outward in the releasing direction of the coil bobbin part 1. Thereafter, as shown in FIG.
8, fit and secure. As mentioned above, the insulating flap 14
A hole is formed on one side of the magnet wire to partition each magnet wire connection terminal part 12a to some extent, so that each magnet wire connection terminal part 12a that has been subjected to the soldering process is covered with insulating tape. The troublesome insulation work such as winding and insulating the wire is completely unnecessary.

Through this process, the J: coil is completed. Thereafter, as shown in FIG. 1, a coil cover 8 is placed over the coil bobbin portion 1. This coil cover 8 may be a motor case or a stator yoke, for example, if this coil is an excitation coil for a motor. Such a coil saw bar 8 is fitted into the ij4-shaped coil cover engaging portion 16 formed on the connector portion 2, thereby firmly holding the connector portion 2. Depending on the structure of the motor,
As shown in figure E, cover the stator yoke like this 1
．． ::] Sometimes a combination of two files is used.

Although we have described a preferred embodiment of the present invention in detail above, it is important to note that the present invention is not limited to such a variety of embodiments, such as the shape of the connector body, the number and shape of lead bins, It goes without saying that the shape of the coil bobbin, the shape of the coil bobbin portion, etc. can be changed in various ways depending on the usage conditions and various requirements. For example, as shown in FIG. 4, the connection with the external lead wire may be twisted and soldered. In this case, the bobbin 1 side may be exactly the same as that in FIG.

Since the basic structure is almost the same as that of the embodiment shown in FIG. 2, corresponding parts are designated by the same reference numerals.
The differences between them will be mainly explained below. First, the lead pin 12 has a plate shape in which the terminal portion 12b for external connection has a hole 30 at the tip, and the tip core wire portion of the external lead wire 31 is inserted into the hole 30 and connected by tying solder (−1 bar). In this embodiment, the magnet wire connecting terminal portion 12a has a rectangular cross section.Such a shape makes winding easy, but it may also have a round cross section as in the previous embodiment. In the embodiment, the connector main body 10 has a shape in which the height at both ends is considerably low.
In the embodiment shown in FIG. 2, an electrical connection is achieved by inserting a plug to which an external lead wire is connected, whereas in the embodiment shown in FIG. Since it is designed to be soldered directly, there is no need to make it taller for mating, etc.; on the other hand, if it is made taller, it will actually cause a problem with the soldering process. IC-9
-It is from.

The process of assembling the coil bobbin using this connector part is the same as that shown in FIG.

Since the present invention is a coil bobbin with a connector part 1 configured as described above, it is possible to use a coil bobbin with a connector part 1 configured as described above.
j' G:1 The work becomes extremely easy, the reliability of the wiring is significantly improved, automation is possible, it is easy to connect with various types of external lead wires, and It has many excellent effects, including the ability to significantly increase mechanical strength.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing an example of a coil bobbin part suitable for use in the present invention, Fig. 2 is an explanatory diagram showing an example of a connector part to be combined with it, and Fig. 3 is an assembling process of a coil using them. Figure 4 shows an example of the connector part.
I is an explanatory diagram. 1... Coil bobbin part, 2... Connector part, 4...
・Magnet wire, 10...Connector body, 12・
...Lead pin, 14...Insulation flap, 16...
- Coil cover engaging portion, 18. ...locking protrusion, 22a
, 22b...flange, 24...4 bobbins, 26...bending piece, 28...locking notch. Patent Applicant: Fuji Electrochemical Co., Ltd. Agent: Ikei Ofutsu, Shigeji Hirama, Jodo Araki, Tomonosuke S 11, Figure 96, Figure 2, Figure 4, Figure 5

Claims (1)

[Claims] 1. A combination of a flanged annular coil bobbin portion and a connector portion attached to it, the connector portion comprising:
A connector body made of an insulator, a magnet wire connection terminal part, and an external connection terminal part are L-shaped, and a plurality of lead pins held in the connector body and a magnet wire connection terminal part are formed in an L shape. an insulating flap that can be bent to cover the insulating flap and has a locking part for bobbin flange at the tip;
and a coil cover engaging part formed on the connector body, and the coil bobbin part is composed of a bobbin body having a flange, and a bending part that fits into the connector part at one of the flange parts and can be bent inside the bobbin. 1. A coil bobbin with a connector, characterized in that the coil bobbin has a structure including a first flange portion and the insulating flap locking portion formed on the other flange portion facing the second flange portion.