JPS6384102A - Coil component - Google Patents

Abstract

PURPOSE:To prevent the insufficient strengths of a plurality of extensions formed by drawing wires out of the coil section and defective insulation of the wire blanks by drawing the extensions separately by means of a plurality of guide grooves. CONSTITUTION:A coil section 13 is formed on a coil bobbin 10, the ends of wire blanks of the section 13 are led out by a predetermined length to form a plurality of extensions 14. A guide 11 which reinforces the extensions 14 when the extensions 14 are led out of the section 13 are projected from the outer peripheral edge of one flange of the bobbin 10, and a plurality of guide grooves 8 for leading out the extensions 14 separately are formed in the guide 11. The ends of the guides 14 are folded several times and twisted to form terminals 16. The end 19 of the terminal 16 is formed as a connecting terminal. Thus, problems of the quality of the extensions 14 due to insufficient strength can be eliminated, and the defective insulation of the wire blank can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to coil parts used in motors, relays, transformers, solenoids, and others.

(Prior Art) Coil parts are used in motors, relays, transformers, solenoids, and other devices and parts that apply electromagnetic force.

In coil parts, processing of the ends of wire rods for energizing the coil portion is a problem. Conventional coil components include a direct lead wire method, a terminal method, etc., depending on the method of processing the ends of the wire.

In the direct lead wire method, a lead wire is soldered to the end of the wire of the coil part made by winding the wire around a bobbin, and it is electrically connected to a predetermined point via this lead wire. It is.

An insulating tube is placed over the soldering section, and an insulating tube is wrapped around the coil section to prevent the soldering section from moving inadvertently.

In the terminal method, the terminal is fixed by protruding from the outer periphery of the bobbin, the end of the wire of the coil part made by winding the wire around the bobbin is soldered to the terminal, and the external lead wire is connected to the terminal. It was designed to connect.

(Problems to be Solved by the Invention) According to the above-mentioned direct lead wire method, it is necessary to manually process the end of the coil after winding, and incorrect wiring, poor insulation, and lead wire removal are difficult to handle. This may cause purchasing problems such as shortages,
Moreover, the cost also increases.

Further, according to the above-mentioned terminal method, quality problems are reduced, but since it is necessary to drive the terminal into the bobbin, there are problems in that the cost is high and it cannot be made compact.

The present invention was made to solve these conventional problems, and it solves quality problems such as incorrect wiring and insufficient strength, and also has a simple configuration, low cost, and compact size. Providing coil parts that can
Furthermore, it is an object of the present invention to provide a coil component in which poor insulation at a portion where a wire is drawn out from a coil portion is eliminated.

(Means for Solving the Problems) The present invention includes a coil portion formed by winding a wire rod, and a plurality of extension portions formed by pulling out a predetermined length of the end portion of the wire rod constituting the coil portion from the coil portion. a connecting end formed at the tips of these extensions; a coil holding member that holds the coil portion; and a plurality of coil holding members provided on the holding member for pulling out the plurality of extensions at a distance from each other. It is characterized by having a guide groove.

(Function) Since the plurality of extensions formed by pulling out the ends of the wire from the coil part are separated from each other by the plurality of guide grooves provided in the coil holding member, the insulation between the plurality of extensions is reduced. The condition is maintained. The connecting end at the tip of each extension can be directly used for connection to the outside.

(Example) Hereinafter, an example of a coil component according to the present invention will be described with reference to the drawings.

1 to 5, a coil portion 13 is formed by winding a wire around a coil bobbin 10, which is a coil holding member and has opposing flanges. Each end is pulled out by a predetermined length to form a plurality of extensions 14. The extension portion 14 is provided on the outer peripheral edge of one flange of the coil bobbin 10.
The guide portion 1 serves as reinforcement when pulling out the coil portion 13 from the coil portion 13.
1 is provided protrudingly, and notches 12 are formed on both sides of the base of this guide portion 110. Further, a plurality of guide grooves 8 are formed in the guide portion 11 to draw out the plurality of extension portions 14 at a distance from each other.

The coil portion 13 is made of two wire rods, and one extension portion formed by joining one end of each wire rod constitutes an intermediate tap. The root portion of the extension portion 14 is fixed to the outer surface of the coil portion 13 with an adhesive 15 such as true melt.

The tip side of each of the extension parts 14 is folded back several times and replaced to form a single reinforced wire, thereby forming a terminal part 16. By folding the wire material, this terminal portion 16 has the same strength and thickness as a general lead wire. A soldering portion 17 is formed at both ends of each of the terminal portions 16, so that the wires of the folded portion are bundled together and electrically conductive. Each of the terminal parts 16 is soldered at both ends using two insulating members 1 between parts I7 and 17.
8.18, and is glued and held in a sandwiched manner. Two insulating members 18 are provided between each terminal portion 16.
18 ensures a predetermined interval, and the coil bobbin 10
By applying a tensile force between the terminal portions 16 and the terminal portions 16, the extension portions 14 become substantially parallel at predetermined intervals without becoming entangled with each other.

Further, the tip portion 19 of each terminal portion 16 is made to protrude from the insulating member 18 by a predetermined length to constitute a connecting terminal portion.

Each terminal portion 16 constructed as described above is further insulated and reinforced as shown in FIGS. 3 to 5.

As shown in FIG. 3, the above-mentioned reinforcing sheet 20 is made of an insulating material and is large enough to cover the guide section 11 of the coil bobbin 10 and the insulating member 18 of the distal end section 16. Guide portion 11 of coil bobbin 10 and insulating member 18
and is carried. Each extension portion 14 is connected to each guide groove 8.
As a result, each extension part 14 is spaced apart from each other and aligned substantially parallel to each other, and a reinforcing sheet 20 similar to the above-mentioned reinforcing sheet 20 is placed over the extension parts 14. The reinforcing sheet 20 thus arranged so as to sandwich each of the extension parts 14 is heat-pressed and bonded at the opposing flat parts of the reinforcing sheets 20, and at the same time is punched out into a predetermined shape.
A coil component as shown in FIGS. 4 and 5 is made.

Note that the outer edges of the upper and lower reinforcing sheets 20 may be ultrasonically welded along dotted lines. By doing this, the upper and lower reinforcing seams 1-2
The extension part 14 of the wire can move relatively freely inside the wire, making it less likely to break.

In this way, the guide portion 11 of the coil bobbin 10 and the insulating member 18
Since the reinforcing sheet 20 adhesively holds the
The tensile strength of the extension part 14 becomes stronger. In particular, by adhering the reinforcing sheets 20 to each other at the notch 12 of the coil bobbin 10, the tensile strength can be further increased.

Further, since the root portions of each extension portion 14 are pulled out while being separated from each other by the plurality of guide grooves 8 formed in the bobbin 10 as a coil support member, it is possible to reliably maintain the insulating state of each extension portion 14. can.

The above-mentioned coil component can be directly connected to the outside by the connecting end 19 of the terminal part 16 protruding from the reinforcing sheet 20 and the insulating member 18, but it can be connected to the outside by using a connector as shown in FIG. You may also connect it. As shown in FIG. 6, a portion of the insulating member 18 and reinforcing sheet 20 near the connecting end of each terminal portion 16 is removed, and a cut is formed between each terminal portion 16 to pin the connector pin. An insertion portion 21 for 22 is formed. The connector pins 22 are connected to the respective terminal portions 16 by caulking the insertion portions 22 a formed by bending the insertion portions 21 onto the connector pins 22 .

A connecting end of each terminal portion 16 is electrically connected to a connector pin 22 . This electrical connection may be made by soldering to the narrow center portion 22b of the connector pin 22, or
A method of caulking a part of the connector pin 22 may also be used.

The tip end of each connector pin 22 is inserted into a hole formed in the connector housing 23. Each connector pin 2
A protrusion to prevent removal is formed at the tip of 1. The removal-stopping protrusions engage with the wall surfaces of the holes in the connector housing 23, thereby preventing each connector pin 22 from being removed from the connector housing 23. The connector housing 23 is a female connector, and by inserting a male connector into the connector housing 23, the coil portion I3 can be connected to the outside.

Next, the embodiments shown in FIGS. 7 and 8 will be described. In this embodiment, the coil set itself is constructed in the same manner as the coil set shown in FIGS. , a connector pin 22 and a connector housing 23 similar to the configuration shown in FIG. 6 are fixed. And coil bobbin 1o
through the center hole 25 of the coil bobbin 10,
A reinforcing sheet 2 arranged in a loop shape so as to sandwich the insulating member 18 and the connector housing 23 from above and below.
4 are adhered from above and below, so that the guide portion 11 of the coil bobbin 10, the insulating members 18, 18, and the connector housing 23 are integrally fixed. The reinforcing sheet 24 is made of an insulating material. The insertion side of the male connector of the connector housing 23 is blocked by adhesively fixing the reinforcing sheet 24, but the reinforcing sheet 24 is broken by the male connector pin when the male connector is inserted into the connector housing 23. By doing so, electrical connections can be easily made and handling becomes easier.

According to the above embodiment, since the connector housing 23 is fixed by the reinforcing sheet 24, the strength is strong. Further, in this embodiment as well, the plurality of extensions 14 are pulled out while being separated from each other by the plurality of guide grooves 8 formed in the guide portion 11 of the bobbin 1o, so that the extensions 14 can be reliably insulated from each other. Can be done.

Next, an embodiment using a linipak member instead of a bobbin as a coil holding member will be described with reference to FIGS. 9 to 13. As shown in FIGS. 9 and 10, multiple locations on the outer surface of the coil portion 26 formed by winding the wire are fixed with an adhesive 28 such as hot melt,
The shape of the coil portion 26 is maintained so as not to collapse.

The coil portion 26 is made of two wire rods, and the end portion of each wire rod is pulled out by a predetermined length to form an extension portion 29. Each extension 2
One of the extensions 9 constitutes an intermediate tap by bringing together one end of each wire. Each extension 29
The root portion of the coil portion 26 is fixed to the outer surface of the coil portion 26 with an adhesive 27 such as Honmelt.

The tip side of each of the extension parts 29 is folded back several times and twisted together to form a terminal part 30.
0 is sandwiched from above and below by an insulating member 31 and is adhesively held at a predetermined distance from each other, and each tip portion 33 of the terminal portion 30 is made to protrude from the insulating member 31 by a predetermined length. The distal end portion 33 of the terminal portion 30 constitutes a connecting terminal portion. Sawtooth-like unevenness 34 is formed on both side edges of the insulating member 31, so that the upper and lower insulating members 31 can be easily and firmly bonded.

The coil part 26 of the coil set configured in this way has the first
It is packaged with a pack member 35 as a coil holding member and a lid 36 as shown in FIGS. 1 to 13. The pack member 35 includes a storage portion for the coil portion, a central protrusion portion on the inner circumferential side of the storage portion, a guide portion 39 formed to protrude from the outer peripheral edge, and a plurality of extension portions of the wire rod. The guide portion 39 includes a plurality of guide grooves 40 formed in the guide portion 39 so as to be pulled out at a distance from each other, and notches 43 formed on both sides of the root portion of the guide portion 39.

The coil portion 26 is stored in the storage portion of the pack member 35, and the extension portion 29 of the wire rod from the coil portion 26 is drawn out along each guide groove 40.

The pack member 35 in which the coil portion 26 is housed in this manner is covered with the lid 36, and the outer periphery of the lid 36 is adhered to the outer periphery of the pack member 35 by means such as heat welding. The center portion of the lid 36 is bonded to the central protrusion 38 , and the lid 36 is bonded to the guide portion 39 of the puncture member 35 .
The protruding portion 41 is adhered to package the coil portion 26.

If the pack member 35 and lid body 36 as described above are used, it will be substantially the same as using a coil bobbin, and the guide groove 40 will firmly and reliably hold the wire rod extension 29, and a plurality of The extension portion 29 has a plurality of guide grooves 40
Since the extension parts 29 are pulled out while being separated from each other, there is an effect that the mutual insulation state of the extension parts 29 is reliably maintained. Furthermore, it is possible to reduce costs compared to using a coil bobbin, and since the puncture member can be made thinner than the coil bobbin, more windings can be wound within the same volume, and the drive It is possible to improve torque.

As shown in FIG. 12, when reinforcing the extended portion of the wire including the guide portion 39 of the puncture member 350 and the protruding portion 41 of the lid body 36 by sandwiching it between the reinforcing sheets 44 from above and below, the upper and lower reinforcing sheets 44 By adhering at the cutout portion 43 of the guide portion 39, the tensile strength can be made stronger. Furthermore, as shown in FIG. 13, the length of the protruding part 41 of the lid body 36 is made shorter than the length of the guide part 39 of the puncture member 35 to create a difference in length L between the two. Therefore, since the bending position of the extended portion of the wire is different between the end of the guide portion 39 and the end of the protrusion 41, there is an effect that the bending strength is increased.

The tip of the terminal portion is connected to the copper foil portion 5 of the printed board Fj, 50 constituting one side of the connector, as shown in FIG.
1 may be soldered. The copper foil portion 51 forms a connection contact, and the coil portion is connected to the outside through the copper foil portion 51 by inserting the printed circuit board Fj, 50 into the mating side of the connector. Reference numeral 52 indicates a terminal portion, and this terminal portion 52 is adhesively held by an insulating member 53. The tip portion 54 of each terminal portion 52 protruding from the insulating member 53 is connected to the printed circuit board 5.
The copper foil portions 51 of 0 are soldered to each other.

If the printed circuit board 50 is used to connect to the outside in this way, the configuration is simpler than when using connector pins, connector housings, etc., and the work for connecting to the outside becomes easier.

(Effects of the Invention) According to the present invention, a connection end is provided at the tip of the extension of the wire pulled out from the coil part, the coil part is held by the coil holding member, and the extension part is separated from each other by the coil holding member. Since a guide groove is provided for pulling out the extension part, quality problems such as insufficient strength of the extension part can be solved, and since the extension part can be directly connected to the outside, the cost is low and A coil component that can be made compact can be obtained. Furthermore, by providing the guide groove in the coil holding member, poor insulation of the wire can be reliably prevented.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway plan view showing one embodiment of the coil component according to the present invention, Fig. 2 is a partial side view of the same as above, and Fig. 3 is a diagram showing the case where a reinforcing sheet is added to the above embodiment. FIG. 4 is a plan view showing a state in which the reinforcing sheet is added, FIG. 5 is a side view of a portion of the same as above, and FIG. 6 is a terminal that can be added to the above embodiment. FIG. 7 is a side view showing another embodiment of the coil component according to the present invention, FIG. 8 is a plan view of the same, and FIG.
The figure is a plan view showing still another embodiment of the coil component according to the present invention, FIG. 10 is a partial side view of the same as the above, and FIG. FIG. 12 is an exploded perspective view showing an example of the bank member, FIG. 12 is a plan view showing how the above bank member is used, FIG. 13 is a cross-sectional side view of the same bank member, and FIG. 14 is a diagram applicable to the coil component of the present invention. FIG. 7 is a plan view showing another example of processing of the terminal portion. 8.40・・・Guide groove, 10.35・・
・Coil holding member, 13.26...Coil part, 1
4.29... Extension part, 19.33... Connection end part. Nnol Shakiichi/mouth maximum σ foot

Claims (1)

[Claims] A coil portion formed by winding a wire rod, a plurality of extension portions formed by pulling out a predetermined length of the ends of the wire rods constituting the coil portion from this coil portion, and connection ends formed at the tips of these extension portions. A coil component comprising: a coil holding member for holding the coil portion; and a plurality of guide grooves provided in the holding member for pulling out the plurality of extension portions at a distance from each other.