JPS6328002A - Coil component - Google Patents

Abstract

PURPOSE:To maintain the state of a coil without using a bobbin thereby to obtain a coil component having high winding rate by bonding a coil itself and the root of an extension from the coil with an adhesive. CONSTITUTION:A plurality of positions on the outer surface of a coil 11 in which a wire blank is wound are bonded by hot-melting with an adhesive 12, and the state of the coil 11 is maintained without collapse. The coil 11 is composed of two wire blanks in such a manner that the ends of the wire blanks are led in predetermined lengths to form extensions 13, 14, 15, and one 14 of the extensions 13, 14, 15 forms an intermediate tap by twisting one end of each wire blank. The roots of the extensions 13, 14, 15 are bonded with an adhesive 16 by hot-melting on the outer surface of the coil 11, and terminals 17, 18, 19 are respectively bonded to the ends. A plurality of positions on the outer surface of the coil 11 are bonded with an adhesive 12 to maintain the state of the coil. Therefore, a bobbin is not necessarily used.

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 landmine magnetic 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.

5 and 6 show an example of the direct lead wire method, in which a lead wire 3 is soldered to the end of the wire of a coil portion 2 formed by winding a wire around a bobbin 1. It is electrically connected to a predetermined location via 3. An insulating tube 4 is placed over the soldering section, and an insulating tube 4 is wound around the outer periphery of the coil section 2 to prevent the soldering section from moving inadvertently.

Figures 7 and 8 show examples of the terminal method, and the bobbin 5
The terminal 6 is projected and fixed on the outer periphery of the bobbin 5.
The end of the wire of the coil portion 7 formed by winding the wire is soldered to the terminal 6, and an external lead wire is connected to the terminal 6.

(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, and incorrect wiring, poor insulation, and lead edge stripping are difficult to achieve. 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, poor insulation, and insufficient strength, and also has a simple configuration and low cost. The present invention also aims to provide a coil component that can be made compact.

(Means for Solving the Problems) The present invention has a coil portion formed by winding a wire, and an extension portion formed by drawing out a predetermined length of the end of the wire from the coil portion, and the coil portion A plurality of locations on the outer surface of the wire are fixed with an adhesive, and a root portion of an extension of the wire from the coil portion is fixed to the outer surface of the coil portion with an adhesive.

(Function) Since the outer surface of the coil portion is fixed with adhesive at multiple locations, the shape of the coil can be maintained even without using a coil bobbin. Since the base of the extension of the wire from the coil part is fixed with adhesive, the extension of the wire can be used as it is as a lead wire to the outside.

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

In FIG. 1, a plurality of locations on the outer surface of a coil portion 11 formed by winding a wire are fixed with an adhesive 12 such as melt, so that the shape of the coil portion 11 is maintained so as not to collapse. The coil portion 11 is composed of two wire rods, and the ends of each wire rod are drawn out by a predetermined length to form extension portions 13, 14, and 15. One of the extensions 13, 14, 15, 14, forms an intermediate tap by twisting one end of each wire. Each of the above extensions 13
．． The root portions 14 and 15 are fixed to the outer surface of the coil portion 11 with an adhesive 16 such as Honmelt. At the tip of each extension 13.14.15 is a terminal 17.18.19.
is fixed.

According to the coil component according to the embodiment described above, a plurality of locations on the outer surface of the coil portion 11 are fixed by the adhesive 12 and the shape of the coil is maintained, so there is no need to use a bobbin. Further, the extension portion 1 of the end of the wire constituting the coil portion 11
3.14.15 has its root part fixed with adhesive 16, so the extension part 13.14.15 can be used directly as a lead wire to the outside without having to be relayed to a fixed terminal etc. .

Next, an example of a method for manufacturing the coil component according to the above embodiment will be described.

As shown in FIG. 2(a), the tsuba 21 and the tsuba 21
A winding part having a mandrel 22 integrally protruding from the center of the winding machine is attached to the winding machine. A plurality of grooves 21a are formed in the radial direction from the outer circumferential side of the collar 21, and a thread is formed at the tip of the mandrel 22. At the top of the above winding section there are 2
There is a book nozzle 23.

A pipe 24 is inserted into the mandrel 22 as shown in FIG. 2(b), and then the center hole of another collar 25 is inserted. The pipe 24 is made of non-magnetic material such as plastic. The collar 25 also has a plurality of grooves 2 in the radial direction from the outer circumferential side.
5a is formed.

As shown in FIG. 2(C), a nut 26 is screwed into the screw at the tip of the mandrel 22, and both flanges 21.2
5, the mandrel 22, and the pipe 24 are integrally combined to form a bobbin-like object, and two wire rods 27 led from the nozzle 23 are wound around the bobbin-like object. In this case, winding can be performed by rotationally driving the bobbin-like member.

Here, each end portion of the two wire rods 27 is folded back and forth an arbitrary number of times at an arbitrary length, and this folded portion is connected to the nozzle 23.
The strength of the extension can be improved by twisting it an appropriate number of times and making it into one extension, which is advantageous when used directly as a current-carrying terminal with the outside.

Each of the above extensions should also be fitted as shown in Figure 2(d) before starting the winding work.
They may be wound around the terminals 30 as shown in FIG. In this case, the terminal 30 is also rotated integrally with the bobbin-shaped member during winding.

When the number of turns of the wire rod 27 reaches a predetermined number of turns, the coil part 11
is formed, next, 121a and 2 of each tsuba 21.25 are formed.
Adhesive such as hot-nodmelt is poured from 5a to fix multiple locations on the outer surface of the coil portion 11. This corresponds to the adhesive 12 shown in FIG. Next, connect the base portions of the extensions from the coil portion 11 at both ends of each wire rod 27 to the coil portion 11.
Adhere to the outer surface of 1 with adhesive. This corresponds to the adhesive 16 shown in FIG.

Next, as shown in FIG. 2(d), the nozzle 23 is moved to pull out the wire 27, and the length setting member 28 is moved up and down to fold back the end of the wire 27 to a predetermined length. After folding the folded portions together to form the extension portions, the tips of the extension portions are wrapped around the terminals 30, respectively. For example, as shown in FIGS. 2(d) and 2(e), three terminals 30 are connected by connecting portions 31, and the extension portions 13.15 at one end of each wire 27 are connected to individual terminals. 30 , and the extension portion 14 formed by twisting the other ends of each wire 27 together is wound around one terminal 30 . The extension portion 14 constitutes an intermediate tap.

When winding is completed, the napht 26 is loosened, the collar 25 is removed, and the mandrel 22 integral with the collar 21 is removed from the pipe 24. As a result, as shown in FIG. 2(e),
The coil portion 11 is wound around the pipe 24, and the outer surface of the coil portion 11 is fixed at multiple points with adhesive 2, and the root portions of the extension portions 13, 14, and 15 from the coil portion 11 are attached to the coil portion 11. It is taken out in a state that it is fixed to the outer surface with adhesive 16. Each extension 13 wrapped around each terminal 30
．． The ends of 14 and 15 are soldered to each terminal 30. Pipe 24 may be left in place as shown, or may be removed. When removing the pipe 24, remove the coil part 11.
The inner circumferential surface side is also fixed with adhesive such as hot melt. The connecting portion 31 that connects each terminal 30 is cut or removed, and each terminal 30 is
make independent. A coil component is thus formed.

The above coil parts can be used as they are in devices and parts that utilize electromagnetic force, but in order to increase versatility and reliability, they should be treated as shown in Figures 3 and 4. Good too. In the example shown in FIG. 3, substantially the entire coil component except the tip of the terminal 30 is wrapped with a sheet 33. For packaging with the sheet 33, for example, vacuum packaging can be used, or the entire sheet 33 may be wrapped by shrinking the heat-shrinkable sheet 33 by heat. By wrapping with the sheet 33 in this manner, the overall strength can be increased, handling becomes easier, and it is less susceptible to external damage, improving reliability.

Moreover, the pipe 24 is left in place and is wrapped almost entirely with the sheet 33, and the length of the pipe 24 is made sufficiently longer than the thickness of the coil part 11 so that the pipe 24 protrudes from both ends of the coil part 11. If you do this, sheet 33
By cutting the protruding part of the pipe 24 together with the sheet 33 after packaging, the sheet 33 is accurately cut along the outer shape of the pipe 24, so that the pole etc. can be inserted correctly into the inner diameter of the pipe 24. .

When packaging with the sheet 33, the tip of the terminal 30 may be wrapped with the tip exposed in advance, or the entire terminal 30 including the tip may be wrapped with the sheet 33 and the tip of the terminal 30 may be wrapped with a pin. When the connector 35 or the connector 36 is inserted, the sheet 33 may be torn to establish an electrical connection. Alternatively, the side to be wrapped may be a female terminal, and the connector side to be connected to this may be a male terminal. In this case, the sheet may be torn when the two are connected as described above, and the electrical connection may be established. good.

In the example shown in FIG. 4, a pin 35 of a commercially available general-purpose connector is connected to the tip of each terminal 30, and a general-purpose connector 36 is connected to this pin 35 in the packaged with the sheet 33 as described above. It is designed to connect with the outside world. In this way, by making it possible to connect the homemade terminal 30 to the commercially available connector 36 via relay, connection with the outside can be made fully automatically.

The adhesive is not limited to Honmelt, and other highly recommended adhesives may be used.

The coil component according to the present invention can be used as a coil component for motors, relays, transformers, solenoids, and the like.

The extension from the coil part does not necessarily need to be folded back and twisted together. Moreover, it is not an essential requirement for the present invention that the intermediate tap be provided from the coil portion.

(Effects of the Invention) According to the present invention, since the coil part itself and the limiting part of the extension part from this coil part are fixed with adhesive, the shape of the coil can be maintained without using a bobbin.
It is possible to provide a coil component that is low in cost and has a high winding ratio by increasing the winding space by the amount of the bobbin.

Furthermore, since the extension from the coil part can be directly connected to the outside, the number of connection parts is reduced, and quality and reliability are improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a coil component according to the present invention, FIG. 2 is a process diagram showing an example of a method for manufacturing a coil component according to the present invention, and FIG. 3 is a perspective view showing an example of a coil component according to the present invention. A cross-sectional view showing another embodiment; FIG. 4 is a plan view showing essential parts of still another embodiment of the coil component according to the present invention; FIG. 5 is a partially sectional plan view showing an example of a conventional coil component. , FIG. 6 is a side view of the same, FIG. 7 is a plan view showing another example of the conventional coil component, and FIG. 8 is a side view of the same. 11... Coil part, 12... Adhesive, 13.1
4.15... Extension part, 16... Adhesive, 27.
··wire. (haη)1 person), UZ illusion

Claims (1)

[Claims] It has a coil part formed by winding a wire, and an extension part formed by drawing out a predetermined length of the end of the wire from this coil part, and fixes multiple places on the outer surface of the coil part with adhesive, A coil component formed by fixing a root portion of an extension of the wire rod from the coil portion to the outer surface of the coil portion with an adhesive.