JP3161391U - code - Google Patents

Abstract

An object of the present invention is to realize a cord that can be designed with a high degree of freedom in decoration, can prevent touch noise, has mechanical strength and flexibility, and is difficult to be entangled. A cord 1 includes a plurality of conductors 10-1 to 10-4, an insulator 20 that is colored in a first color and covers the plurality of conductors 10-1 to 10-4, and a first color. And a plurality of openings formed at predetermined intervals in the longitudinal direction of the outer cover member 30, which are colored in a second color different from that of the outer cover member 30 so as to cover the insulator 20. 31. Each of the conductors 10-1 to 10-4 is composed of a plurality of insulated wires 11 such as a polyurethane copper wire. The jacket member 30 is made of a soft synthetic resin. And the 1st color in the insulator 20 becomes a structure which can be visually recognized from each opening part 31 of 30 of the outer skin member. [Selection] Figure 1

Description

  The present invention relates to a cord for connecting a headphone, an earphone, a microphone, an earphone / microphone, and the like to a portable audio device, a cellular phone, or the like.

  For example, the following Patent Document 1 describes a technique of a cord used for stereo headphones.

  In the conventional cord, two conductors each composed of a plurality of copper wires or the like are arranged in parallel at a predetermined interval, and these two conductors are outside of polyvinyl chloride (hereinafter referred to as “PVC”) or the like. Two insulated electric wires having a circular cross section are formed by being covered with the covering members, respectively, and the two insulating wires are joined to each other by the covering member.

Japanese Patent Laid-Open No. 11-252681

  However, the conventional codes have the following problems (a) to (c).

  (A) Since the conventional cord has a structure in which two insulated wires having a circular cross section are joined to each other, a decorative design cannot be applied.

  (B) The two inner conductors are easily cut and entangled by bending.

  (C) For example, when a corded headphone to which the headphone body is attached is worn on the ear, if vibration is applied to the cord due to contact with clothes, this vibration becomes touch noise and propagates to the headphone. The sound quality of the output sound is degraded.

  The cord of the present invention includes a plurality of linear conductors, one or more first colors, an insulator covering the plurality of conductors, and a second color different from the first color. A tubular outer skin member that is colored so as to cover the insulator, and a plurality of openings formed at predetermined intervals in the longitudinal direction of the outer shell member, The first color is visible from the openings.

  The present invention has the following effects (1) to (3).

  (1) Since the openings are formed at predetermined intervals along the longitudinal direction of the tubular jacket member colored in the second color, the first color of the internal insulator is visually recognized from each opening. Can improve the aesthetic decoration effect.

  (2) Since the openings are formed in the jacket member at predetermined intervals along the longitudinal direction, the flexibility is increased. For example, when a headphone with a cord to which the headphone body is attached is attached to the ear. The vibration of the touch noise transmitted from the cord to the ear is reduced, and deterioration of the sound quality can be prevented. Moreover, since the flexibility of the cord is increased, the wearing feeling is improved by adapting to the curved portion of the body during use.

  (3) Since the conductor covered with the insulator is covered with the jacket member, the bending strength is high, and the inner conductor is hard to be cut by bending and is not easily entangled.

  As described in (1) to (3), according to the present invention, a design with a high degree of freedom in decoration is possible, touch noise can be prevented, and there is mechanical strength and flexibility. It is possible to realize a cord that is not easily tangled.

FIG. 1 is a schematic configuration diagram showing a part of a cord in Embodiment 1 of the present invention. FIG. 2 is a schematic manufacturing process diagram showing an example of a manufacturing method in the cord 1 of FIG. FIG. 3 is a schematic plan view showing a part of the cord in the second embodiment of the present invention. FIG. 4 is a schematic enlarged sectional view showing the radial direction of the cord in the third embodiment of the present invention.

  The mode for carrying out the invention will become apparent from the following description of the preferred embodiments when read in light of the accompanying drawings. However, the drawings are for explanation only and do not limit the scope of the present invention.

(Configuration of Example 1)
FIGS. 1A and 1B are schematic configuration diagrams showing a part of a cord in Embodiment 1 of the present invention, where FIG. 1A is a perspective view and FIG. 1B is a plan view. is there.

  The cord 1 of the first embodiment is a 4-channel cord for two channels for connecting headphones, earphones, microphones, earphones / microphones, and the like to a portable audio device, a cellular phone, etc. The cross section in the direction is substantially square (for example, about 4 mm in width and about 2 mm in thickness), and the longitudinal direction has a strip shape.

  The cord 1 includes linear first, second, third, and fourth conductors 10-1, 10-2, 10-3, and 10-4. Each of the conductors 10-1 to 10-4 has an outer diameter of, for example, about 0.8 mm, and is configured by a plurality (for example, a dozen or more) of insulated wires 11. Each insulated wire 11 is composed of a synthetic enameled wire such as a polyurethane copper wire (for example, a core wire diameter of 0.006 mm) whose core wire is insulated with a resin.

  In addition, you may comprise each insulated wire 11 with electric wires other than a synthetic enamel wire. The first, second, third, and fourth conductors 10-1, 10-2, 10-3, and 10-4 have different colors to facilitate separation work (ie, sorting work). (For example, it is desirable to color the first and second conductors 10-1 and 10-2 in a natural transparent color, the third conductor 10-3 in green, and the fourth conductor 10-4 in red). . Any other color can be adopted as the different color.

  Among the first to fourth conductors 10-1 to 10-4, the first and second conductors 10-1 and 10-2 are arranged in parallel and adjacent to each other and have a substantially elliptical cross section. Further, the third and fourth conductors 10-3 and 10-4 are also arranged adjacent to each other in parallel, and the insulator 20- such as PVC having a substantially elliptical cross section. 2, and the two insulators 20-1 and 20-2 are joined together to form one insulator 20.

  The insulator 20 is colored in one or more first colors in consideration of decorativeness. For example, in the radial cross section of the insulator 20 shown in FIG. 1A, the upper half is colored pink and the lower half is colored white. In addition, as a coloring aspect of the first color in the insulator 20, the insulator 20 may be colored by any combination of a plurality of other colors, or may be colored by one arbitrary color.

  A tubular skin member 30 is attached to the insulator 20 covering the first to fourth conductors 10-1 to 10-4 so as to cover this. The outer skin member 30 has a substantially square cylindrical cross section in the radial direction and a thickness of about 0.5 mm. The outer skin member 30 is formed of a soft flexible synthetic resin or the like. It is colored in a second color (for example, black) different from the 20 first colors.

  A plurality of openings 31 are formed at a predetermined interval (for example, an interval of about 10 cm) along the longitudinal direction on the flat surface and the bottom surface that are the upper surface of the outer skin member 30. Each opening 31 is designed to make the color of the internal insulator 20 visible in consideration of decorativeness, and has a substantially rhombus (for example, a length of 4 mm in the cord longitudinal direction and a length of about 3 mm in the cord width direction). ).

(Example of manufacturing the cord of Example 1)
2 (a) and 2 (b) are schematic manufacturing process diagrams showing an example of the manufacturing method in the cord 1 of FIG. 1, and FIG. 2 (a) shows the opening 31 using a tubular outer skin member material. The side view which shows a formation process, and the figure (b) are the perspective views which show the operation | work process which inserts the conductors 10-1 to 10-4 coat | covered with the insulator 20 in the tubular outer skin member 30. FIG.

  When manufacturing the 4-core cord 1 of FIG. 1, although not shown, for example, a plurality of insulated wires 11 are bundled to form first, second, third, and fourth conductors 10-1 to 10-4, respectively. Then, the first, second, third, and fourth conductors 10-1 to 10-4 are wound around the drum, respectively. The first, second, third, and fourth conductors 10-1 to 10-4 wound around the drum are fed out in parallel and covered with an insulator 20 colored in the first color by an extruder. And wind it on a drum.

  Further, as shown in FIG. 2 (a), the tubular outer shell material 30a of the second color wound around the drum 40 is fed out, and a die 41 having an upper die 41a and a lower die 41b is mounted. The jacket member material 30 a is punched out by a press machine or the like, and the openings 31 are formed at predetermined intervals to manufacture the tubular jacket member 30, which is wound around the drum 42.

  Thereafter, as shown in FIG. 2B, for example, a wire (not shown) is attached to the ends of the first, second, third, and fourth conductors 10-1 to 10-4 covered with the insulator 20. The first, second, third, and fourth conductors 10-1 to 10-4 are fed out from the drum 42, and the wires are drawn into the tubular jacket member 30 so that the first, second, and second conductors are drawn. 3. If the 4th conductor 10-1 to 10-4 is inserted in the outer skin member 30, manufacture of the 4-core cord 1 of FIG.

  When using the cord 1 manufactured in this way, for example, it is cut into a predetermined length according to the application. The ends of the insulator 20 and the jacket member 30 in the cut cord 1 are cut using a cutting jig such as a heating wire, and the cut insulator 20 and the jacket member 30 are peeled off to have a predetermined length. If the terminal portions of the first, second, third, and fourth conductors 10-1 to 10-4 are exposed and connected to a headphone body, a plug, or the like, it can be used for audio signal transfer.

(Effect of Example 1)
According to the first embodiment, there are the following effects (a) to (d).

  (A) Since the opening portions 31 are formed at predetermined intervals along the longitudinal direction of the tubular jacket member 30 colored in the second color, the first insulator 20 inside the opening portion 31 is formed from each opening portion 31. The combination of the first color of the insulator 20 and the second color of the outer skin member 30 can improve the aesthetic decoration effect.

  (B) Since the openings 31 are formed at predetermined intervals along the longitudinal direction in the jacket member 30, flexibility is increased. For example, a corded headphone with a headphone main body attached thereto is worn on the ear. When touching, vibration of the touch noise transmitted from the cord 1 to the ear is reduced, and deterioration of sound quality can be prevented. Moreover, since the flexibility of the cord 1 is increased, the wearing feeling is improved by adapting to the curved portion of the body during use.

  (C) Since the conductors 20-1 to 20-4 covered with the insulator 20 are covered with the jacket member 30, the bending strength is high, and the internal conductors 10-1 to 10-4 are cut by bending. Difficult and entangled.

  (D) If the first, second, third, and fourth conductors 10-1 to 10-4 are colored in different colors, the sorting operation is facilitated, and an error in polarity occurs when connecting to the headphone body or the like. Can be prevented.

  As described in (a) to (d), according to the first embodiment, a design with a high degree of freedom in decoration is possible, touch noise can be prevented, and mechanical strength and flexibility are improved. Yes, it is possible to realize the code 1 which is not easily tangled.

  FIGS. 3A and 3B are schematic plan views showing a part of a cord in the second embodiment of the present invention. Elements common to the elements in FIG. The common code | symbol is attached | subjected.

  In the cord 1A of FIG. 3A, an elliptical opening 30A is formed on the flat surface and bottom surface, which are the upper surface of the jacket member 30, with a predetermined interval (for example, an interval of about 10 cm) along the longitudinal direction. Has been.

  In the cord 1B of FIG. 3B, rectangular openings 31B are formed on the flat surface and bottom surface of the jacket member 30 at a predetermined interval (for example, an interval of about 10 cm) along the longitudinal direction.

  Thus, by forming the elliptical opening 31A and the rectangular opening 31B in the outer skin member 30, a decorative effect different from that of the first embodiment can be achieved.

  Note that the shapes of the openings 31, 31A, 31B are decorative by changing to various shapes such as a substantially rhombus, an ellipse, a triangle other than a rectangle, a circle, a heart shape, etc., or by combining different shapes. Diversified design.

  FIG. 4 is a schematic enlarged cross-sectional view showing the radial direction of the cord in the third embodiment of the present invention. Elements common to the elements in FIG. ing.

  The cord 1C of the third embodiment is a four-core cord for two channels like the cord 1 of the first embodiment. However, the overall shape is different from the first embodiment, and the cross section in the radial direction is substantially elliptical (for example, , The major axis is 4 mm and the minor axis is about 2 mm).

  The cord 1C includes first, second, third, and fourth conductors 10-1, 10-2, 10-3, and 10-4 similar to those in the first embodiment, and each of these conductors 10-1 is provided. 10-4 are respectively constituted by a plurality of insulated wires 11. The first to fourth conductors 10-1 to 10-4 are covered with an insulator 20C, such as PVC, which is disposed adjacently in parallel and has a substantially oval cross section. As in the first embodiment, the insulator 20C is colored in one or more first colors in consideration of decorativeness. A tubular skin member 30C is attached to the insulator 20C so as to cover it. The outer skin member 30C has a substantially oval cylindrical cross section in the radial direction and a wall thickness of about 0.5 mm. The outer skin member 30C is formed of a soft flexible synthetic resin or the like. It is colored in a second color (for example, black) different from the first color of 20C.

  A plurality of openings 31C are formed at an upper portion and a lower portion of the outer skin member 30C at a predetermined interval (for example, an interval of about 10 cm) along the longitudinal direction. Each of the openings 31 makes the color of the internal insulator 20C visible in consideration of the decorativeness in the same manner as in the first and second embodiments, and is substantially rhombus, oval, square, triangle, circle, It has a desired shape such as a heart shape.

  When the 4-core cord 1C shown in FIG. 4 is manufactured, for example, a plurality of openings 31C are formed along the longitudinal direction of the outer skin member 30C using a mold having a structure different from the mold 41 shown in FIG. . Furthermore, if the conductors 10-1 to 10-4 are covered with the insulator 20C and inserted into the outer skin member 30C using a wire or the like, the manufacturing is completed.

  According to the cord 1C of the third embodiment, although the radial cross-sectional shape is different from that of the cord 1 of the first embodiment, substantially the same operations and effects as the first embodiment can be achieved.

(Modification)
The present invention is not limited to the first to third embodiments, and various other usage forms and modifications are possible. For example, there are the following forms (i) and (ii) as usage forms and modifications.

  (I) The number of the conductors 10-1 to 10-4 is not limited to 4 cores, but is changed to other core wire numbers such as 2 cores, 3 cores, 5 cores, 6 cores, etc. Different conductors (for example, natural colors such as transparent, green, red, and other colors) may be colored to distinguish each conductor. Moreover, you may change the material of the insulated wire 11 which comprises each conductor 10-1, ..., a diameter, etc. to things other than Examples 1-3.

  (Ii) The cross-sectional shape, cross-sectional structure, dimensions, constituent material, manufacturing method, and the like of the codes 1, 1A, 1B, and 1C are not limited to those of the first to third embodiments, and various changes can be made.

1, 1A, 1B, 1C Code 10-1 to 10-4 Conductor 11 Insulated wire 20, 20-1 to 20-4, 20C Insulator 30, 30C Outer member 31, 31A, 31B, 31C Opening

Claims (4)

A plurality of linear conductors;
An insulator colored in one or more first colors and covering the plurality of conductors;
A tubular skin member colored in a second color different from the first color and mounted to cover the insulator;
A plurality of openings formed at predetermined intervals in the longitudinal direction of the jacket member,
The cord, wherein the first color in the insulator is visible from each opening. Each conductor is
The cord according to claim 1, comprising a plurality of insulated wires.   The cord according to claim 2, wherein the insulated wire is a synthetic enameled wire including a polyurethane copper wire.   The cord according to any one of claims 1 to 3, wherein the jacket member is made of a soft synthetic resin.

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