JPH0482164B2 - - Google Patents

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 parts 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 portion, and an insulating tube that also serves to prevent the soldering portion from moving unintentionally is wound around the outer periphery of the coil portion.

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 ends of the coil after winding, resulting in incorrect wiring, poor insulation, and insufficient strength to pull out the lead wire. This causes quality problems such as, and also increases costs.

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, poor insulation, and insufficient strength, and has a simple configuration, low cost, and The purpose of this invention is to provide a coil component that can be made compact.

(Means for Solving the Problems) The present invention provides a coil portion in which a wire is wound;
The end of the wire rod is pulled out for a predetermined length from this coil part to form an extension part, and the tip side of this extension part is folded back and brought together to form a terminal part, and this terminal part is adhesively held with an insulating member. The insulating member and the extension starting from the coil part are bonded and held together by a flexible reinforcing material, and the tip of the terminal part is made to protrude from the insulating part by a predetermined length, and the protruding tip part of the terminal part is constitutes the connection terminal portion.

(Function) The terminal portion, which is formed by folding back and matching the tip ends of the wire rod extensions from the coil portion, is adhered and held by an insulating member. The tip portion of the terminal portion protruding from the insulating member can be directly used for connection to the outside. The extension starting from the coil part is adhesively held by a flexible reinforcing material to maintain sufficient mechanical strength, and since it is flexible, it can be used depending on the form of the equipment to which the coil part is attached. Can be placed freely.

(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 having opposing flanges, and from this coil portion 13 each end of the wire is formed. The extension portion 14 is formed by being pulled out by a predetermined length. A guide portion 11 is provided protruding from the outer peripheral edge of one flange of the coil bobbin 10 to provide reinforcement when the extension portion 14 is pulled out from the coil portion 13, and a notch portion 12 is formed at the base of the guide portion 11. has been done.
The coil portion 13 is made of two wire rods, and one extension portion 14 formed by joining one end of each wire rod constitutes an intermediate tap. The root portion of each extension portion 14 is fixed to the outer surface of the coil portion 13 with an adhesive 15 such as hot melt.

The distal end side of each of the extension parts 14 is folded back several times and twisted together to form a single reinforced wire,
The terminal portion 16 is configured. By folding the wire material, this terminal portion 16 has the same strength and thickness as a general lead wire. Soldering portions 17 are formed at both ends of each of the terminal portions 16, so that the wires of the folded portions are bundled together and electrically conductive. Each of the terminal portions 16 is sandwiched between two insulating members 18, 18 between soldered portions 17, 17 at both ends, and is bonded and held. The distance between each terminal part 16 is 2
A predetermined spacing is secured by the two insulating members 18, 18, and by applying a tensile force between the coil bobbin 10 and the terminal portion 16, each extension portion 14 is maintained substantially parallel to each other at a predetermined spacing without getting entangled with each other. becomes.
Further, the tip portion 19 of each terminal portion 16 is connected to an insulating member 18.
This protruding terminal portion 1 is made to protrude by a predetermined length from
The distal end portion 19 of 6 constitutes a connection terminal portion.

Each terminal portion 16 treated 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 made of an insulating material is sized to cover the guide portion 11 of the coil bobbin 10 and the insulating member 18 of the tip portion 16. The guide part 11 and insulating member 18 of the coil bobbin 10 of the coil set which has been wound and the extension parts 14 have been treated as shown in FIG. In this state, a reinforcing sheet 20 similar to the reinforcing sheet 20 described above is placed on the reinforcing sheet 20. The reinforcing sheets 20 thus arranged so as to sandwich the respective extensions 14 are heat-pressed and bonded at the opposing plane parts of the reinforcing sheets 20, and at the same time are punched out into a predetermined shape, as shown in FIGS. 4 and 5.
A coil component as shown in the figure is made.
The two reinforcing sheets 20 constitute a flexible reinforcing material, and by bonding these two reinforcing sheets 20 as described above, an extended contact starting from the insulating member 18 and the coil portion 13 is formed. The portion 14 is adhered and held.

In this way, the guide portion 11 of the coil bobbin 10 and the insulating member 18 are bonded and held by the reinforcing sheet 20, so that the tensile strength of the extension portion 14 is increased. 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.

In the above coil component, the tip end 19 of the terminal part 16 protruding from the reinforcing sheet 20 and the insulating member 18 can be connected to the outside as it is, but a connector as shown in FIGS. 6 and 7 can be used. It may also be possible to connect it to the outside. As shown in FIG. 6, a portion of the insulating member 18 and reinforcing sheet 20 near the tip 19 of each terminal portion 16 is removed, and a notch is formed between each terminal portion 16 to pin the connector pin. An insertion portion 21 for 22 is formed. Each of these insertion portions 21
is inserted into an insertion portion 22a formed by bending the connector pin 22, and the insertion portion 22a is caulked, thereby connecting the connector pin 22 to each terminal portion 16, as shown in FIG.
A tip end 19 of each terminal portion 16 is electrically connected to a connector pin 22 . This electrical connection may be made by soldering to the narrow central portion 22b of the connector pin 22, or by caulking a portion of the connector pin 22. The tip end of each connector pin 22 is inserted into each hole formed in the connector housing 23. A retaining protrusion is formed at the tip of each connector pin 22, and this retaining protrusion engages with the wall surface of the hole in the connector housing 23, thereby preventing each connector pin 22 from coming out of 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 13 can be connected to the outside.

According to the coil component according to the above embodiment, the terminal portion 16 is formed by folding back and twisting the tip side of the extension portion 14 of the wire pulled out from the coil portion 13, and the terminal portion 16 is adhesively held by the insulating member 18. At the same time, the terminal portion 16 protruding from the insulating member 18
Since the tip 19 of the wire is connected to the outside as a connection terminal, quality problems such as incorrect wiring, poor insulation, and insufficient strength that occur with conventional direct lead wire methods and terminal methods can be eliminated. In addition, the configuration is relatively simple, the cost is low, and the device can be made compact.
Further, since the terminal portion 16 is made by folding the wire several times and aligning them together, a predetermined strength and size can be obtained, and the terminal portion 16 can be connected to the connector pin 22 without using a separate member. Other benefits include the fact that it is easier to automate assembly because it has a flatter shape, and that the wire rods are reinforced by folding and twisting the parts that are subject to force when inserted and removed by humans, which prevents wire breakage. There is also.

Next, the embodiments shown in FIGS. 8 and 9 will be described. In this embodiment, the coil set itself is constructed in the same manner as the coil set shown in FIGS. In this case, a connector pin 22 and a connector housing 23 are fixed to each other, similar to the configuration shown in FIGS. 6 and 7. Then, the reinforcing sheet 24 passing through the center hole 25 of the coil bobbin 10 and arranged in a loop so as to sandwich the guide portion 11, the insulating members 18, 18, and the connector housing 23 of the coil bobbin 10 from above and below is adhered from above and below. a guide section 11 of the coil bobbin 10;
Insulating members 18, 18 and connector housing 23
is integrally fixed. The reinforcing sheet 24 constitutes a flexible reinforcing material and 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 leaving it in place, electrical connections can be easily made and handling becomes easier.

According to the above embodiment, the connector housing 23
Since it is fixed by the reinforcing sheet 24, the strength is increased.

Next, Figures 10 to 1 with the coil bobbin omitted
The embodiment shown in FIG. 4 will be described. As shown in FIGS. 10 and 11, a plurality of locations on the outer surface of the coil portion 26 made of wound wire are fixed with an adhesive 28 such as hot melt, and the shape of the coil portion 26 is distorted. It is maintained so that it does not. 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. One extension 29 of each extension 29
An intermediate tap is constructed by bringing together one end of each wire. The base portion of each extension portion 29 is fixed to the outer surface of the coil portion 26 with an adhesive 27 such as hot melt.

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

The entire coil set configured in this way is the 12th coil set.
As shown in the figure, the tip portion 33 of the terminal portion 30
The upper and lower reinforcing sheets 32 are sandwiched from above and below while leaving a
2 and 32 are bonded together and simultaneously formed by press punching into the form shown in FIGS. 13 and 14.

Each of the tips 33 may be connected to the outside as is, or may be connected to the outside using a connector pin and a connector housing as shown in FIGS. 6 and 7.

When a coil bobbin is not used as in the above embodiment, the coil portion may be packaged using a packing member 35 and a lid 36 as shown in FIG. The pack member 35 includes a storage portion for the coil portion, a central protrusion 38 on the inner circumferential side of the storage portion, a protrusion 39 on the outer circumference, and a guide groove for the extension portion of the wire formed in the protrusion 39. 40. A coil portion is stored in the storage portion of the pack member 35, and an extension portion of the wire rod from the coil portion is drawn out along each guide groove 40. The pack member 35 in which the coil portion is housed in this way is covered with a lid 36,
The outer periphery of the lid 36 is adhered to the outer periphery of the pack member 35 by an adhesive means such as thermal welding, the center portion of the lid 36 is adhered to the central protrusion 38 of the pack member 35, and The protruding part 41 of the lid body 36 is adhered to the protruding part 39 of the coil part, and the coil part is packaged, so that the entire coil set is constructed as one component.

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 effect that the extension part of the wire rod will be firmly and reliably held by the guide groove 40 will be obtained. be.

In addition, in the embodiment using the coil bobbin 10 as shown in FIGS. 1 to 9, a guide groove corresponding to the guide groove 40 in FIG. By guiding the extension from the wire rod, the extension of the wire can be firmly and reliably held.

As a reinforcing means between the coil part and the tip of the extension part, as shown in FIG. 16, an insulating member 46 adhesively holds the guide part 45 protruding from the coil bobbin 44 and the extension part 47 of the wire rod. A reinforcing tube 48 may be interposed between. Wire extension 47
When covering the reinforcing tube 48 with the insulating member 46
What is necessary is to roll it up and insert the reinforcing tube 48 therethrough. The guide portion 45 of the coil bobbin 44 and one end of the insulating member 46 are fixed to each end of the reinforcing tube 48 by adhesive. The reinforcing tube 48 constitutes a flexible reinforcement and is made of an insulating material. Further, by being attached as described above, the reinforcing tube 48 adhesively holds a part of the insulating member 46 and the extension part 47 starting from the coil part.

Since the reinforcing tube 48 can be bent in any direction, the wire extension 47 can be bent freely in any direction. In this case, if the extension part 47 is left slack, the reinforcing tube 48 will not break even if it is pulled or bent.

The tip of the terminal portion is attached to a printed circuit board 50 that constitutes one side of the connector, as shown in FIG.
It may also be soldered to the copper foil portion 51 of. Copper foil part 51
forms a connection contact, and by inserting the printed circuit board 50 into the mating side of the connector, the coil portion is connected to the outside through the copper foil portion 51. 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 50.
are soldered to the respective copper foil portions 51 of.

By using the printed circuit board 50 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.

In addition, Figures 3 to 5 and Figures 12 to 1
Instead of using the reinforcing sheets 20 and 32 shown in Figure 4, a reinforcing sheet is used that covers the entire coil assembly including the coil portion and the terminal portion, and the entire coil assembly is packed by vacuum packing, heat welding, etc. You can do it like this.

The adhesive used in the present invention is not limited to hot melt, but may be any other suitable adhesive.

Coil parts according to the present invention include motors, relays,
It can be applied as coil parts for transformers, solenoids, etc.

It is not an essential requirement for the present invention that the intermediate tap be exposed from the coil portion.

In the terminal portion, it is sufficient that the folded portions of the wires are aligned, and the terminal portions do not necessarily need to be twisted together.

As explained with reference to FIG. 10, the insulating members for bonding and holding the terminal portions can be firmly and reliably bonded to each other by forming irregularities on the edge portions. By making holes or using a mesh material, it is possible to improve the adhesion between the entire coil set or the reinforcing sheet covering between the coil bobbin and the terminal portion.

(Effects of the Invention) According to the present invention, the terminal portion is formed by folding back and bringing together the tips of the extension portions of the wire drawn out from the coil portion, and the terminal portion is adhesively held with an insulating member and protrudes from the insulating member. Since the tip of the terminal part used as a connection terminal to connect to the outside,
It is possible to eliminate quality problems such as incorrect wiring, poor insulation, and insufficient strength that occur with conventional direct lead wire methods and terminal methods.
In addition, the configuration is relatively simple, the cost is low, and
It can be made more compact. Furthermore, since the terminal portion is made by folding the wire several times and joining them together, sufficient strength and size can be obtained. The extension starting from the coil part maintains sufficient mechanical strength by being adhesively held by a flexible reinforcing material, and is flexible enough to adapt to the shape of the equipment to which the coil part is attached. Place them freely according to your needs.
Furthermore, the position of the connection part with the device can be freely set.

[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 partially sectional side view of the same, and Fig. 3 is a midway view when a reinforcing sheet is added to the above embodiment. 4 is a plan view showing the state in which the reinforcing sheet is added, FIG. 5 is a partially sectional side view of the same, and FIG. 6 is a plan view of the terminal part that can be added to the above embodiment. FIG. 7 is a plan view showing another process of processing the same terminal portion; FIG. 8 is a side view showing another embodiment of the coil component according to the present invention; FIG. FIG. 9 is a plan view of the same as above, FIG. 10 is a plan view showing still another embodiment of the coil component according to the present invention, FIG. 11 is a partially sectional side view of the same, and FIG. Plan view showing intermediate steps when adding, 1st
3 is a plan view showing a state in which the reinforcing sheet is added, FIG. 14 is a sectional side view of the same, FIG. 15 is an exploded perspective view showing an example of a pack member applicable to the coil component according to the present invention, and FIG. The figure is a plan view showing another example of reinforcing means applicable to the coil component of the present invention.
FIG. 17 is a plan view showing another example of terminal portion processing applicable to the coil component of the present invention. 13, 26... Coil part, 14, 29... Extension part, 16, 30... Terminal part, 18, 31... Insulating member, 19, 33... Tip part.

Claims (1)

[Claims] 1. It has a coil part in which a wire is wound, and an extension part in which the end of the wire is drawn out for a predetermined length from this coil part, and the tip side of this extension part is folded back and brought together to form a terminal part. The terminal portion is adhesively held by an insulating member, the insulating member and an extension starting from the coil portion are adhesively held by a flexible reinforcing material, and the tip of the terminal portion protrudes from the insulating portion by a predetermined length. A coil component characterized in that the tip of the protruding terminal portion constitutes a connecting terminal portion.