JPS631005A - Coil component - Google Patents

Abstract

PURPOSE:To cut down a process of operation and to improve the strength, by extending a wire material from a wire material temporarily fitting part of a bobbin to form an extension, and by fitting firmly a reinforcing material from the temporarily fitting part over to the extension of a coil. CONSTITUTION:A coil element 12 is formed by winding a wire material round a bobbin 11. The bobbin 11 is provided with flanges on both sides, and parts 14-16 for fitting the wire material temporarily are formed in the outer peripheral portion of one flange. The end part of the wire material constituting the coil element 12 is folded back with an arbitrary length in arbitrary times forward and backward and further put together in one to form each of coil extensions 18-20. Moreover, the extensions 18-20 are arranged in juxtaposition and held from above and below between sheet materials 31 and 32 as reinforcing materials. According to this construction, a function as a lead wire can be given to the extensions 18-20 themselves. Consequently, an operating process is cut down, and false wiring and imperfections in insulation and continuity can be prevented. Besides, the use of the reinforcing materials enables the increase in strength of the extensions.

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 the wire rod 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.

6 and 7 show an example of the direct lead wire method, in which a lead wire 3 is soldered to the end of the wire of the coil portion 2 formed by winding the dough around the 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 tape is wrapped around the outer periphery of the coil section 2 to prevent the soldering section from moving inadvertently.

Figures 6 and 9 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 or a connector is connected to the terminal 6.

(Problems to be Solved by the Invention) According to the above-mentioned direct lead wire method, the end of the coil must be manually processed after winding, resulting in problems such as incorrect wiring, poor insulation, and disconnection of the lead wire. This causes quality problems such as insufficient strength, and also increases costs.

Further, according to the above terminal method, since it is necessary to drive the terminal into the bobbin, the cost is high, and there is a problem that it is not possible to make the device compact if the lead wire is connected using a connector.

The present invention has been made to solve these conventional problems, and in addition to solving quality problems such as incorrect wiring, poor insulation, and insufficient strength, the present invention has a simple configuration, low cost, and The purpose is to provide a coil component that can be made compact.

(Means for Solving the Problems) The present invention provides a coil portion formed by winding a wire around a bobbin, a wire temporary fixing portion provided on the bobbin, and an extension of the wire from the temporary fixing portion. and a reinforcing member fixed across the temporary fixing part and the extension part.

(Function) Since the extension part is temporarily fixed to the temporary fixing part of the bobbin and has considerable strength, it can be used as it is as a lead wire to the outside, and the coil can be energized through this coil extension part. can.

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

In FIGS. 1 and 2, a coil portion 12 is formed by winding a wire around a bobbin indicated by the reference numeral 11. The bobbin 11 has flanges at both ends, and a pair of protrusions 13 are integrally molded on the outer side of the - side flange, and three wire temporary fixings are attached to the outer periphery of the - side flange. Sections 14, 15, 16 are integrally molded in a projecting manner at regular intervals. Each temporary fixing part 14.15.16 above
The base is narrow. In addition, a stepped portion 17 is provided at the forming portion of each temporary fixing portion 14, 15, and 16 of the - side flange.
is formed and the thickness becomes thinner.

The ends of the wire constituting the coil portion 12 are folded back and forth an arbitrary number of times to an arbitrary length, and are then twisted together to form a coil extension 18, 20. The coil part 12 has an intermediate tap, and the wire material constituting the coil part 12 is folded back and forth an arbitrary number of times at an arbitrary length, and twisted together to form an extension part 19. has been done.

The proximal ends of each of these extensions 18.19.20 are respectively wound around the narrow portions of the temporary fixing parts 14.15.16 of the bobbin 11, and from these temporary fixing parts 14.15.16 each of the above extension parts is wound. 18, 19, and 20 are formed in an extended shape.

Further, the distal end portions of each extension portion 18, 19, 20 are wound around three connecting portions 26, 27, 28, which are electrically integrally formed with the three terminals 21, 22, 23 of the connector 25, respectively. and soldered. Each extension 1
8, 19, and 20 are sandwiched between sheet materials 31 and 32 as reinforcing materials from above and below in a state that they are aligned substantially parallel to each other. As the sheet material 31.32, for example, a thick inner tape with angry heat adhesive properties is used, whereby the sheet material 31.32 is adhered to each other and each extension portion 18.19.20
, and prevents the extensions 18, 19, and 20 from moving inadvertently. Sheet material 3L32 is bobbin 1
1 and the connector 25, and a small hole at one end of the sheet material 31 is fitted into the protrusion 13 of the bobbin 11, thereby reinforcing the sheet material 31 and further reinforcing each extension portion 18, 19. 20 reinforcements have been made. The end of each sheet material 31, 32 on the bobbin ll side is adhered to the bobbin 11 with an adhesive 33, 34 such as Hontomelt, and the end of each of the 25 connectors of each sheet material 31, 32 is also bonded with adhesive such as Hontomelt. 35 and 36 are bonded to the connector 25.

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

First, as shown in FIG.
and a second wire rod 10B, each wire rod 10^, 10B
The end portion of the coil is folded back and forth an arbitrary number of times to an arbitrary length, and the folded portion is twisted together an appropriate number of times using a winding machine to form a single wire, thereby forming an extension to the coil portion. Next, connect the above-mentioned extensions of each wire lO^, 10B to the connector 25.
Wrap around the connecting parts 26 and 27 of. Next, the length setting rod 38 is lowered as shown in FIG.
5 to the bobbin 11 is pushed down with the length setting rod 38 to bypass the extension, and set the length of the extension between the connector 25 and the bobbin 11 to a predetermined length. Set to length. Connector 25 and bobbin 11
The length of the extension between the coil parts is determined by the equipment in which the coil component is used, and is set to a predetermined length by the descending distance of the length setting rod 38.

Next, by moving the nozzle of the winding machine, the other end of each of the extension parts is wound around the narrow part of the temporary fixing part 14, 15 of the bobbin 11, and then the bobbin 11 is rotated and attached to the bobbin 11. The wire 10A and IOB are wound a desired number of turns to form a coil portion. Next, the wire rods 10A and 10B connected to the other end of the coil section are folded back and forth an arbitrary number of times at an arbitrary length, and the folded sections are twisted together to form a coil extension section. Next, by moving the nozzle of the winding machine, each of the wire rods 10A,
The coil extensions of the IOB are wound around the narrow portions of the temporary fixing portions 15 and 16 of the bobbin 11, respectively. Next, length setting rod 3
8 is lowered again to set the length of each of the extensions to a predetermined length, and then the other ends of the extensions of each of the wires 104 and 10B are wound around the connection parts 27 and 28 of the tab cover 25, respectively.

The bobbin 11 and the flap 25 are sequentially transferred in the direction shown by the arrow in FIG. After that, the wires are wound around the connecting portions 26 and 27 of the bobbin 11, respectively, and then the wires are continuously wound on the next bobbin 11 through the same steps as those described above.

Wire 10A spanning between each connector 25, IOB cut between each connector 25, and then each wire 10A wrapped around each connection 26, 27, 28 of connector 25,
The ends of 10B are soldered to the respective connections 26, 27, 28 mentioned above.

Each wire rod 10A, 10B is coated with urethane or the like. Therefore, if the coating of the coil extension' section formed by folding back each of the wire rods 10A and 10B is peeled off in advance and then folded back and twisted together to form an extension section, a part of the folded section in the extension section may be disconnected. It is possible to ensure conduction even when the device is connected, improving safety.

The bobbin 11 with winding completed in this way and this bobbin 11
As shown in FIG. 4, the pair of tongue lids 25 are arranged on a wide sheet material 32 as a reinforcing material,
Further sheets 1 to 1 as another wide reinforcing material are placed thereon and integrated with the sheet material 32 by adhesion or the like. Each bobbin 11 and each connector 25 and the sheet material are integrated using an adhesive such as Honmelt as described above. Further, the bobbin 11 and the sheet material are mechanically connected by fitting the protrusions and holes as described above. In this way, the sheet material reinforcing the gap between the bobbin 11 and the connector 25 is cut between the bobbin 11 and the connector 25 that form a pair.

Note that the sheet material used as the reinforcing material does not necessarily have to be wide, but may be an 8 [1, W tape-shaped material with sufficient width and length to straddle the extension between the pair of bobbins 11 and the connectors 25. A sheet material may also be used.

In the embodiment described above, a recess is formed in place of the protrusion 13 formed on the bobbin 11, and the sheet material is mechanically coupled to the bobbin 11 by fitting the protrusion formed on the sheet material side into the recess. You may also do so.

Next, another embodiment of the coil component according to the present invention shown in FIG. 5 will be described. In FIG. 5, the coil portion 4
1 is formed by winding a wire around a bobbin 42 with a flange on one side, and adhesive portions 43 made of hot-melt or the like are formed at several appropriate locations on the outer periphery of the coil portion 41 to prevent the formation of the coil portion 41. has been done. Extension portions 46 and 47 extend from both ends of the coil portion 410. Each extension part 46,47 is temporarily fixed by being wound around the narrow part of a wire temporary fixing part 48,49 which is integrally molded so as to protrude from the outer peripheral part of the flange of the bobbin 42.
6.47 is formed in a shape extending from the temporary fixing portion 48.49.

Each of the extensions 46, 47 in this embodiment is formed from a single wire without folding back the wire.

There are two pieces near the temporary fixing parts 48 and 49 of the bobbin 41.
A pair of protrusions 50 are integrally molded, and small holes in the ends of a sheet material 51 serving as a reinforcing material are fitted into the protrusions 50. Similarly, a sheet material 52 as a reinforcing material is arranged on the opposite side of each of the extension parts 46, 47. Each sheet material 51.52 is secured over the temporary fixing portion 48.49 and the proximal end of the extension portion 46.47, thereby reinforcing each extension portion 46.47.

Further, each of the extensions 46, 47 is fixed with tape 55 at a position near the tip thereof, thereby reinforcing the extensions 46, 47 and making handling convenient.

The tip of each extension 46, 47 may be left as is and connected directly to the external circuit, or may be connected to a connector and connected to the external circuit through this connector. Furthermore, the contacts may be connected and then fitted into the connector.

According to the above embodiment, the configuration can be simplified compared to the first embodiment described.

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

The sheet material used as the reinforcing material may be adhesive tape, cloth, insulating film, or anything else as long as it maintains a predetermined strength.

(Effects of the Invention) According to the present invention, the wire constituting the coil part is temporarily fixed to the wire temporary fixing part provided on the bobbin, and the wire is extended from this temporary fixing part to form the extension part. This extension itself can have the function of a lead wire, so there is no need to assemble the lead wire, such as stripping the lead wire, crimping the crimp terminal, and press-fitting the terminal into the housing, thereby simplifying the work process. It has the advantage that it is shorter, the production cost is lower, and the lead wire itself is not required. Further, since a lead wire is not required, there is no need to connect the wire material constituting the coil portion with the lead wire, and incorrect wiring, poor insulation, and poor conduction can be prevented.

There is no need for taping or inserting insulation tubes.

Further, since the reinforcing material is fixed across the temporary fixing portion and the extension portion of the coil, the strength of the extension portion can be increased.

Furthermore, it is possible to employ an automatic machine as described with reference to FIG. 3, and by doing so, it is possible to stabilize the quality.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the coil component according to the present invention, FIG. 2 is a front cross-sectional view of the same above, and FIG. 3 is a perspective view showing an example of the method for manufacturing the coil component according to the above embodiment. Figure, 4th
The figure is a plan view showing an example of a method for processing the coil extension of the coil component according to the above embodiment, FIG. 5 is a plan view showing another embodiment of the coil component according to the present invention, and FIG. 6 is a plan view showing a conventional coil A partially sectional plan view showing an example of the parts, FIG. 7 is a side view of the same as above,
FIG. 8 is a plan view showing another example of a conventional coil component;
The figure is a side view of the same as above. 108, 10B...Wire rod, 11...Bobbin, 1
2... Coil part, 14.15.16... Wire temporary fixing part, 18.19.20... Extension part, 31.32... Reinforcement material, 41... Coil part, 42... Bobbin, 46, 47
...Extension part, 48.49...Wire rod temporary fixing part, 51.
52... Reinforcement material. Ichi G

Claims (1)

[Claims] A coil portion formed by winding a wire around a bobbin, a temporary wire fixing portion provided on the bobbin, an extension portion formed by extending the wire from the temporary fixing portion, and fixation across the temporary fixing portion and the extension portion. A coil component comprising a reinforced reinforcing material.