KR100752074B1 - Seamless Flat-Round Conductive Cable for a Retractable Cord Reel - Google Patents

Abstract

A seamless flat-round conductive cable is suitable for use in the retractable cord having a cable extension chamber in which the flat portion is located and a spool in which the round portion of the cable is woven. The cable has a plurality of unsealed conductive members, each of which may be comprised of an inner conductor and an outer insulating layer. The cable includes a first cable portion of substantially flat shape and a second portion of substantially round shape. The first cable portion includes a plurality of conductive members supported in a substantially flat shape by selectively bonding, jacketing or weaving all of the conductive members. The second cable portion comprises a plurality of conductive members, each member being unsealed, ie integrally connected to each of the conductive members of the first cable portion. The conductive phase member of the second cable portion may be twisted to form a substantially round shape.

Sealless, Conductor, Retractable Cord Reel

Description

Seamless Flat-Round Conductive Cable for a Retractable Cord Reel}

1 is a front view of a reel that is retractable.

FIG. 2 is a side view of the reel shown in FIG. 1 with the cover portion removed.

3 is a cross-sectional view taken along line 3-3 of the reel shown in FIG.

4 is a cross-sectional view taken along the line 4-4 of the reel shown in FIG.

5A-5D illustrate winding and unwinding the flat cable portion of the cable extension compartment in the reel.

6A-6C illustrate a method of converting a round cable into a seamless flat-round cable.

7A-7C illustrate a method of converting a flat ribbon cable into a seamless flat-round cable.

8A and 8B illustrate how to make a continuous flat-round cable.

9 is a plan view showing a cable having a substantially flat central portion and a substantially round portion extending from the central portion.                 

FIG. 10 is a cross-sectional view taken along line 10-10 of the substantially flat cable shown in FIG.

FIG. 11 is a cross-sectional view of the substantially round cable shown in FIG. 9 taken along line 11-11. FIG.

12 is a cross-sectional view of the conductive member of the round cable shown in FIG.

13 is a plan view showing a flat-round cable according to the present invention with a jacket.

14 is a cross-sectional view taken along the line 14-14 of the flat portion of the cable shown in FIG.

FIG. 15 is a cross-sectional view taken along the 15-15 line of the round portion of the cable shown in FIG.

FIG. 16 is a plan view showing a flat-round cable with a woven flat portion.

FIG. 17 is a cross-sectional view taken along line 17-17 of FIG. 16.

Field of invention                         

The present invention relates to a retractable cord reel. More specifically, the present invention relates to a seamless, spliceless electrical cable having a flat portion and a round portion for use in the retractable reel.

Background of the Invention

Retractable cord reels have been applied in a variety of ways to store various types of cables in a retractable state. Cables traditionally wound on the reel have a fixed portion and a portion that can be pulled out or wound into the reel. Generally, the reel includes a spool with a spring, on which the stretchable portion of the cable is wound. The extendable portion of the reel can be pulled out of the reel, in which case the spool rotates in the opposite direction to the spring resilient force. When the cable is released, the spring rotates the spool in the opposite direction to wind the cable back onto the spool. A common problem with the prior art for cord reels is that the rotating extensible portion is in constant electrical contact with the fixed end. In response to these problems, two basic types of code reels have been developed.

The first type of reel generally utilizes a rotating contact located between the rotating reel and the holding frame. The fixed end of the cable is separated from the stretchable part. The fixing cable is connected to the contact by the frame, and the extensible portion is connected to the contact by the reel. As the reel rotates, contact continues substantially between the rotating contacts. However, many kinds of disadvantages are well known for cord reels having mobile contacts. Mobile contacts tend to spark, making such reels not suitable for use in moist or hazardous environments or treatment devices.

To solve this problem, a second type of retractable code reel was developed that eliminated contact. The reel consists of a spool with a stretchable cord portion and an expansion chamber in which a fixed length of cable is spirally wound. The two cable parts are connected in or near the hub of the spool. As the spool rotates, the spirally wound and fixed cable is stretched and shrunk in the stretching chamber. This type of reel is known in Burke's U.S. Patents No. 5,094,396, the disclosure of which is incorporated herein by reference.

It is well known in the art that the reel of the second type functions properly when the fixed portion of the cable in the stretching chamber is flat and the stretchable portion of the cable is rounded and operated for a sufficient period of time. If the stretchable portion of the cable is flat, it cannot be properly retracted on the spool. If the fixed part of the cable is rounded, it tends to be twisted or entangled in the stretching chamber. Therefore, a combination of flat and round cables is required. Typically a flat-round cable, ie a cable with a flat part and a round part, is made by sealing a silver flat cable to the round cable. This is appropriate in many areas but not in all areas. Sealed cables are inappropriate in hazardous and humid environments. In addition, some electrical appliances can distort the electrical signal by the cable by sealing the cable conductors.

Smith's U.S. Patent No. 4,384, 688 discloses a reel assembly comprising a reel in which a telephone cable is wound in and out. A spirally wound spring causes the reel to wind a telephone cable into the reel assembly. The telephone cable is unsealed and has a constant cross section throughout the cable. Although the Smith reel did not use a sealing cable, it did not use the flat-round cable described above, so it would not be optimal.

Although numerous designs have been proposed for retractable cord reels, there has not been a suitable solution for retractable cord reels with a sealed cable that is durable and can be used for a long time in hazardous and wet environments. There has been a great demand for such a reel for a long time.

It is an object of the present invention to provide a seamless flat-round conductive cable for use with the retractable cord reel.

Another object of the present invention is to provide a non-sealed conductive cable formed without sealing the cable of the flat and round shape.

Another object of the present invention is an unsealed, which can be effectively used in a hospital treatment device or wireless communication, in a humid environment such as outdoors and in water, unlike a suture cable that causes sparks or distortion of an electrical signal. To provide a retractable cord reel comprising a flat-round conductive cable.

The above and other objects of the present invention can be achieved by the present invention described in detail below.

Summary of the Invention

The present invention is directed to providing a seamless flat-round electrical cable for use in retractable cord reels of a type comprising a rotating spool and cable extension chamber. The flat-round electrical cable includes a first cable portion that is adapted to be supported or placed in an extension chamber of the reel. The first cable portion includes a plurality of elongate, seamless, non-sealing conductive members, each conductive member comprising a conductive member having a conductor substantially wrapped by an insulating layer. The second cable is adapted to be supported in and out of the spool of the reel. The second cable likewise comprises a plurality of elongate, seamless, non-sealing conductive members, each comprising a conductive member having a conductor substantially wrapped in an insulating layer. The conductive member of the second cable portion is continuous, ie single, unsealed to each of the conductive members of the first cable portion. Several means are used to keep the first cable portion substantially flat and the second cable portion substantially round.

In an embodiment the first or flat cable comprises a plurality of conductive members arranged substantially parallel in parallel. The first cable part is kept in this shape anywhere in several other ways. A means for keeping the first cable portion in a substantially flat shape is to bond the conductors side by side together. In addition to UV fixation, the use of chemical bonding is found to work well. If the insulating layer on the conductor is a thermoplastic resin such as polyvinyl chloride, or rosin, heat or thermal bonding may be used.

A specific example of keeping the first cable portion substantially flat is a jacket. The jacket can be used to knit the nylon that not only keeps the conductor flat, but also protects the conductive member from abrasion, reduces friction in the elongation chamber and provides smoother operation. Unlike the above, the jacket may be composed of a conductive material such as copper. The conductive jacket additionally provides the advantage of functioning as an EMF shield or may be used as an additional conductor such as ground. If the jacket acts as a grounding conductor, one less conductive member is needed, which reduces the size and cost of the cable. The conductive jacket may be knitted or helical.

Another embodiment for keeping the first cable portion in a substantially flat shape includes strands woven between the conductive members of the first cable portion. The strands are woven between conductive members to join the members side by side in parallel parallel form to form a substantially flat cable. Weaving is relatively inexpensive, does not significantly increase the thickness or weight of the cable, and allows the conductive member to make some relative movement between them, providing a smaller and more durable retractable cord reel. There is an advantage.

In the same way, the second rounded part of the cable is formed in several different ways. A substantially round shape can be obtained by twisting the plurality of conductors together. The twisted shape can be maintained without additional support means. Nevertheless, the conductors may be bonded as described above. In an embodiment, a jacket is added onto the conductive member. The jacket may be made of an elastomeric material to protect the conductive member from abrasion and moisture. Instead, the jacket may consist of a knitted fabric such as nylon. As described above, conductive jackets can be used as EMF shielding or as additional conductors. The conductive jacket can be used as a conductor, such as a ground conductor, to reduce one defined conductive member. This substantially reduces the diameter of the round or second portion of the cable. It is thus possible to provide long lengths of retractable cables over spools of the same size. If a conductive jacket is used, it is desirable to apply an insulating cover over the conductive jacket of the cable of the second part.

If a jacket is used to hold the two cable sections in their respective flat and rounded shape, the jacket may be used to weave the two sections of the cable continuously.

Several methods of holding the cable in a flat-round shape are disclosed. The broadly claimed invention is not intended to be limited to this particular means, but should be construed to include all means which provide a result of maintaining a flat-round shape.

The conductive member consists of a conductor and an insulator layer substantially surrounding it. In an embodiment the conductor consists of a plurality of wire strands. Stranded wires are more resistant to fatigue than conducting wires. The first or flat cable portion suffers from severe weakening in the cable stretching chamber as described below. Likewise, the round or retractable cable is subjected to several types of force, including weakening. The larger the number of strands, the longer the lifespan for the drawable cord reel.

The cable also has a substantially round third cable portion with a flat cable located between the two round cable portions. The third cable has a plurality of unsealed conductive members, each of which is connected unsealed to each of the conductive members of the first cable portion.

Thus, the present invention provides an easy solution to a long-standing problem in the field of retractable code reels. Since the cable is continuous, unsealed and the seams and contacts have been removed, the cord reel with the cable according to the present invention has greatly reduced the potential risk of sparking. Therefore, a cord reel having a flat-round cable according to the present invention has the advantage that it can be used in an environment that was previously unsuitable to use an incoming and outgoing cord reel. Newly available fields include hazardous environments (eg chemicals, petroleum, dust), damp environments (eg outdoors, under water), treatments such as hospitals, and industrial environments. Retractable cord reel devices that were not previously available include four season power cord reels for dry / wet vacuum cleaners, charging electric vehicles, engine heater connectors, and electrical repeaters for boats.

Another field of application according to the invention is sensitive electrical devices such as microphone cables. Since the cable according to the invention is not sealed, the electrical distortion caused by the seam is eliminated.

Further commercial applications, features and advantages of the present invention will be apparent to those of ordinary skill in the art in light of the detailed description through the embodiments.

Detailed Description of the Invention

Retractable reel 10 having a seamless flat-round cable therein is shown in FIGS. According to FIGS. 1 to 3, the reel 10 includes a rod-shaped central shaft 12 in which both ends thereof are fitted, which ends are connected to the metal strand 14 by a pair of nuts. It is. The shaft 12 penetrates through a central hole in a hub 20 having a cylindrical bearing sleeve 22, which hub may for example be made of bronze. One end of the spirally wound metal spring 24 is connected to the hub 20 by a screw 28 and the other end 30 of the spring 24 is bent at an appropriate angle to form a spring frame. The end 30 is fixed to 32 so as to penetrate the groove in one side of the spring frame 32. Special means of connecting the spring ends are not critical to the invention and another connection method may be used.

As shown in FIG. 4, the hub 20 includes an integrally formed cog wheel 34, which may be formed of plastic, for example. The gearwheel 34 includes a pair of recesses 38 disposed opposite the plurality of teeth 36. The detent 40 is connected to the inner plate 32a of the spring frame 32 via a pivot pin and the detent 40 is connected to the barb via the spring 44. It is inclined toward the wheel 34.

As shown in FIG. 3, a spool 50 having a pair of side walls 52 and 54 is connected to the hub 20 via a plurality of screws 56, the screw 56 being connected to the side wall ( 54 through the barb gear (34) through. A length of round cable 58 is wound around the spool 50 between the side walls 52 and 54. The shaft 12 penetrates a hole in the central hub 60, which is connected to the hub 20 by means of a plurality of screws 62 threaded into the hub 20.

A cable extension chamber 66, defined by a pair of flat rounded sidewalls 68 and 70, is located adjacent to the spool 50. Hub 72 is located between the side walls 68 and 70. The side walls 68 and 70 and the hub 72 are secured together by the screw 62. A flat cable wound to length is located inside the cable extension chamber 66 around the hub 72. The flat cable 74 is unsealed, ie fully integrally connected to the round cable portion 58 at the junction 76 shown in FIG. 3 as described in detail below. The cover 80 is located above the cable extension chamber 66. The second round cable portion 82 is seamlessly connected to the flat cable portion at the junction point 84.

The cable support 90 is attached to the inner plate 32a of the spring frame 32. The cable support 90 has four plastic rollers that facilitate the passage of the cable 58 passing through the gap and the gap through which the end of the round cable portion 58 passes, as shown in FIG. As shown in FIG. 3, the cable portion 58 passes through a gap 96 in the bottom (horizontal) wall of the spool 50 and mediates a cable support 98 threaded into the side wall 54. To the side wall 54 of the spool. The flat cable portion 74 penetrates a gap in the side wall 70 of the cable extension chamber 66.

Both ends of the round cable portions 58 and 82 have conventional connectors attached thereto (not shown). Where the reel 10 is used in a power supply such as 110V, one of the connectors has two flat prongs or one cylindrical prong and another connects two right angle grooves ( They may go through two flat blades) and one cylindrical groove (with cylindrical blades). As shown in FIG. 1, the round cable 58 has a stopper (not shown) to prevent it from being completely wound into the spool 50, which is located from the end of the connect so that the large cable portion ( 58) is like a ball of cast or plastic with a diameter larger than the gap into which it is wound.

In operation, the user of the reel 10 may exit the cable support 90 from the cable support 90 to pull the round cable 58 of a predetermined length out of the spool 50 and the reel 10. 58). During the withdrawal process, the spool 50, hubs 20, 60, 72, hub bearing 22 and the sidewalls 68, 70 of the elongation chamber all rotate together about the central axis 12 and the shaft 12, the spring mold 32 and the expansion chamber cover 80 are fixed.

During the withdrawal / extension process, the end of the spring 24 attached to the hub 20 is rotated relative to the end 30 of the spring 24 attached to the fixed spring frame 32. Due to the spiral wound inside the spring frame 32, the spring 24 is wound more and more strongly, and as shown in FIG. 4, the spring 24 is rotated in the counterclockwise direction. Send it. If the end of the tooth detent 40 is located in one of the two recesses 38, the cable 58 is not released If not, the combination of the end of the tooth detent and the teeth 36 of the gearwheel prevents the cable 58 from being pulled back into the reel 10 during the pulling process.

As shown in FIGS. 5A-5D (cable extension chamber cover 80 and sidewall 68 are not shown), when the round cable portion is drawn out of the reel 10, the flat cable portion ( 74 undergoes a conventional winding / unwinding process, in which the flat cable 74 is unwound to the extended position from the hub 72 around the outer portion of the elongation chamber 66 and continues to rotate. Rewind around the hub 72.

In order to wind the round cable 58 into the reel 10, the user may move the round cable 58 until the end of the tooth detent 40 is located in one of the two recesses 38. In this case the spring 44 pulls the tooth detent 40 to the left as shown in FIG. 4 and the spirally wound spring 24 shown in FIG. Move 34 (and the spool 50) counterclockwise to cause the round cable 58 to wind into the spool 50.

The foregoing description of the cord reel shown in FIGS. 1 to 5 is an application example of the cable according to the present invention. The cable according to the invention can also be used for other cord reels of the type having a spool and an extension chamber. For example, the cable according to the present invention is Burke's U.S. Patent. No. 4,989,805 and 5,094,396, which illustrate particular applications of the reels and are also referenced below. The seamless flat-round cable integrated into the reel 10 may be formed by a number of different methods. As used herein a seamless "flat-round" cable comprises a first portion having a substantially flat shape or cross section and a second portion having a substantially round shape or cross section. "Flat" shape refers to a cable having substantially parallel and parallel conductors, as shown, for example, in FIGS. 10, 14 and 17, or a cable in the form of a ribbon or substantially the sides of the top and bottom Say a flat shape. “Round” shape refers to a cable having twisted conductors as shown, for example, in FIGS. 11 and 15 or a co-axial cable, or a shape having a cross section of substantially the same length.

A method of forming a flat-round cable having a plurality of sealed conductive members is to convert a conventional round cable having a plurality of twisted conductive members into a flat-round cable as shown in FIGS. 6A-6C. As shown in FIG. 6A, the first step of this method is the exterior of a conventional cable to form a cable having a first elongated portion of a plurality of conductive members 100a-c consisting of a central conductor and an outer insulating layer. To remove the insulation jacket.

Then, as shown in FIG. 6B, the twisted conductive member 100a-c of the elongated portion 100 is released by hand or by machine. As used herein, the term "twisted" refers to a cold or braided or another twisting method. As shown in FIG. 6B, the untwisted conductive members 100a-c of the elongate portion 100 are aligned in a substantially flat shape and arranged in parallel strings to be maintained in such a shape. Suitable adhesive is sprayed onto the respective untwisted conductive members 100a-c to carry out the step and is kept in a substantially flat shape. Alternatively, the conductive members 100a-c may be arranged in a substantially flat shape, and then adhesive may be sprayed on.

Another method of forming a seamless flat-round cable is to convert a conventional ribbon cable having a plurality of conductive members connected to each other into flat-round cables as shown in FIGS. 7A-7C. In FIG. 7A a ribbon cable 100 of length having three conductive members connected to each other is shown. The elongated portion of the ribbon member 110a-c of the ribbon cable 110 is separated by a hand or a machine as shown in FIG. 7B, and then the conductive member (as shown in FIG. 7C). The elongated portions 112 of 110a-c are twisted together in a twisting machine. An insulating cover or jacket is selectively applied over the twisted conductive members 110a-c.

The conductive member at the right end of the conventional ribbon cable is separated and twisted to form a cable having two end portions each having a substantially round shape and a central portion in a substantially flat shape (the middle portion of the ribbon cable is contacted). Left).

A third method of forming a seamless flat-round cable is shown in FIGS. 8A and 8B. This method is performed by a cable forming machine 120 having a rotating carriage 122 on which three spools of insulated wires can be rotated. The machine 120 is an optional actuating / non-acting flat cable guide device, an optional actuating adhesive applicator connected to the adhesive reservoir 132, and an adhesive curing station, such as a radiation generator, such as an oven or infrared light. Has

To form the round portion of the seamless flat-round cable, the round cable guide 126 is actuated (by moving a number of tongs inward to contact the cable) as shown in FIG. The stage 122 rotates while three conductive cables are pulled up through the round cable guide 126. The cables are twisted together to form a twisted cable, which may be provided with an insulating cover in a conventional manner. During the formation of the substantially round portion of the cable, the adhesive applicator 130 and adhesive fixation station 134 need not be operated.

In order to form a flat portion of the cable, as shown in FIG. 8B, the flat cable guide device 128 is operated, and the round cable guide device 126 is stopped, so that the three conductive cables are carried in the carriage 122. ) Is pulled through the flat cable guide device 128 in this state. The adhesive applicator 130 dispenses adhesive to the cable so that the cable maintains a flat shape, and the adhesive securing station 134 operates to fix the adhesive.

Alternately formed flat round cable portions can be formed by alternating the above-described process shown in FIGS. 8A and 8B. The time taken for each of the two processes to be carried out can be automatically adjusted to produce a seamless flat-round cable with alternating flat round portions of a specified length. The flat-round cable is cut by a cutting machine at a predetermined time to produce a cable designed for a particular reel. It should be noted that the number of conductive cables twisted together can be varied by varying the number of cable spools placed on the rotating carriage 122. A continuous jacket can be applied over the flat round portion of the cable. The jacket can be a knitted fabric or a continuous injection molded elastomer.

An unsealed flat-round cable having two substantially round shaped portions 140a and 140c and a substantially flat central portion 140b is shown in FIGS. As shown in FIG. 10, the substantially flat portion 140b surrounds the wire 142 and three inner conductive members consisting of an outer cover 140 such as a nylon knitted cover and a central wire 142. It has an insulating jacket 144. As shown in FIG. 11, the substantially round portion of the cable may have an inner cover 146, such as rubber, unlike the flat portion of the cable. As shown in FIG. 12, the center wire 142 is composed of a plurality of individual wire strands 142a. The strand is 38 diameters or thinner for better stretch durability.

Although the use of an adhesive to bond the conductive member has been described above, other joining methods such as partial melting of the insulating jacket via a hot air balloon, the use of a solvent, the use of an external restraining jacket, or a combination thereof may be employed. Can be used.

Another embodiment of the flat-round cable 150 according to the invention is shown in FIGS. 13-15. The cable consists of a first knitted portion 150a and a second rounded portion. The cable consists of a continuous, seamless, seamless conductive member having an inner conductor 152 and an outer insulating layer 154. The conductive members are each held in a flat shape 150a and a round shape 150b by a continuous jacket 156. Jacket 156 may be conductive or nonconductive, depending on the desired application aspect. Jacket 156 may be constructed of nylon knit fabric. Or it may instead be composed of a knitted conductive jacket such as copper. Conductive jackets can be used as EMI-RFI shields or as ground conductors. When used as a grounding conductor, the jacket replaces one conductive member, thereby reducing the diameter of the round portion of the cable 150b, allowing for longer lengths of the cable being wound over a spool of a given size.

Another embodiment of the flat-round cable 160 according to the invention is shown in FIGS. 16 and 17. The cable consists of a first knitted portion 160a and a second rounded portion 160b. The conductive member is composed of an inner conductor 162 covered with an insulating layer 164. The flat portion of the cable is woven together several strands 162. The process of forming the flat cable by weaving the strands between the conductive members is described in Nasser et al. A.E. Petsch Co. U.S. assigned to Inc. Patent No. 5,735,315 is well known in the art. The second portion of the cable 160b is twisted into a substantially round shape.

The reel 10 and seamless flat-round cable located therein can be used in power supplies, wireless communications, or other devices. When used in a power supply, the reel 10 can be regarded as explosion-proof because it can avoid sparks and high voltages from unsealed cables that are inevitable in seamless power cables. In devices requiring electromagnetic shielding, the seamless flat-round cable may be provided with a sealed electromagnetic shield located under the inner insulation cover.

Although various methods of forming a seamless flat-round cable have been described above, other methods may be used. For example, the cross-sectional shape of the outer insulation coating can be varied in making a seamless flat-round cable. In particular, the ribbon cable portion may be provided with an insulating coating having a round cross section while leaving the remainder uninsulated. Alternatively, the plurality of wound conductors may be provided with an insulating cover which alternately has a flat and round cross section.

The seamless flat-round conductive cable used for the retractable cord reel according to the present invention is formed of a flat cable and a round cable in a state of being unsealed, and includes a cable for sparking or distortion of an electrical signal. Has the effect of providing a retractable cord reel that can be effectively used in a medical treatment device or wireless communication, such as in the open air and in wet environments such as in the water.

Simple modifications and variations of the present invention will become apparent to those skilled in the art based on the above description. This description is to be construed as illustrative only and is for the purpose of presenting the best mode for carrying out the invention for those skilled in the art. The detailed description of the structure may be changed without departing substantially from the spirit of the invention, and exclusive rights to be used that have been modified and used within the claims are reserved.

Claims (31)

Each conductive member has a respective conductor covered by a respective insulating layer, and is composed of a plurality of unsealed, elongated conductive members and a means for holding a flat first portion of the cable, a first cable portion supported in the extension chamber of the reel; And Each conductive member has a respective conductor covered by each insulating layer, and is composed of a plurality of unsealed, elongated, conductive members that are unsealed and continuous with respect to each of the conductive members of the first cable portion, A second cable portion releasably supported on a spool of reel having a round shape; A flat-round conductive cable for use in a retractable cord reel having a spool and an extension chamber. 2. The flat-round conductive cable of claim 1, wherein the plurality of conductive members of the first cable portion have a shape that is parallel and arranged side by side. The flat-round conductive cable of claim 1, wherein the plurality of conductive members of the second cable portion are twisted in a round shape. The flat-round conductive cable of claim 1, further comprising a jacket covering the second cable portion. 5. The flat-round conductive cable of claim 4, wherein the jacket comprises a nylon braid. 5. The flat-round conductive cable of claim 4, wherein the jacket comprises an insulating elastomer. The flat-round conductive cable of claim 1, wherein each of the conductors comprises multiple wire strands. 2. The flat-round conductive cable of claim 1, wherein said means for holding a flat shaped first cable portion of the conductive cable comprises a chemical bond. 2. The flat-round conductivity of claim 1, wherein said means for retaining a flat shaped first cable portion of said conductive cable comprises thermal-bonding of insulating layers of said adjacent conductive members. cable. 2. A flat-round conductive cable according to claim 1, wherein said means for holding a flat shaped first cable portion of said conductive cable comprises a jacket. 11. The flat-round conductive cable of claim 10, wherein the jacket is a conductive material. The flat-round conductive cable of claim 1, wherein the means for retaining the flat cable portion of the conductive cable comprises strands interwoven between the conductive members of the first cable portion. . 2. The flat-round conductive cable of claim 1, wherein the conductive cable further comprises means for retaining a rounded second cable portion. The flat-round conductive cable of claim 1, wherein the conductive cable further comprises a jacket surrounding the second cable portion. 15. The flat-round conductive cable of claim 14, wherein the jacket comprises a braided conductive material. 2. The apparatus of claim 1, wherein the means for maintaining the first cable portion in a flat shape comprises a continuous braided jacket of conductive material, the braided jacket having a first cable portion and a second cable portion of the cable. Flat-round conductive cable characterized by extending to all. One support; One spool rotatably mounted within said support; One expansion chamber adjacent the spool; A first cable portion, each conductive member having respective conductors covered by respective insulating layers, disposed in the elongation chamber of a plurality of non-sealed and elongated conductive members and a flat shape; And Each conductive member has a respective conductor covered by each insulating layer, and is composed of a plurality of unsealed, elongated, conductive members that are unsealed and continuous with respect to each of the conductive members of the first cable portion, A second cable portion releasably supported on a spool having a round shape; Retractable cord reel having an unsealed conductive cable, characterized in that consisting of. 18. The method of claim 17, wherein the conductive cable has respective conductors each conductive member is covered by a respective insulating layer and is unsealed and continuous without sealing against each of the conductive members of the first cable portion. A third cable portion made up of a plurality of elongated conductive members and having a round shape, And the first cable portion is disposed between the second cable portion and the third cable portion. 18. The drawable cord of claim 17, wherein the conductive cable further comprises a continuous braided jacket of conductive material covering the first cable portion and the second cable portion. reel. 20. The retractable cord reel of claim 19, wherein the inner conductor comprises an electrically insulating multiple wire strand. (a) withdrawing a plurality of conductive members arranged in parallel and side by side by a predetermined first length; (b) joining the first lengths of the conductive members together to form a first cable portion in a flat state; (c) continuously drawing the plurality of conductive members by a second length; And (d) twisting the second length of the conductive member to form a second cable portion in a rounded state; Method for producing a flat-round conductive cable, characterized in that consisting of steps. 22. The method of claim 21, wherein the method further comprises applying an insulating jacket to the second cable portion. 22. The method of claim 21, wherein the method further comprises braiding a continuous layer without sealing over both the first cable portion and the second cable portion. Way. 24. The method of claim 23, wherein the braided layer comprises a conductive material. The method of claim 21, wherein the bonding step of the manufacturing method comprises chemical bonding. The method of claim 21. Step (d) comprises: (d1) providing a plurality of reels on each of the rotating carriers, each reel having a length of a conductive member; And (d2) causing the unsealed conductive member to rotate the rotating carriage during step (c); Method for producing a flat-round conductive cable comprising the step. 22. The method of claim 21, wherein the manufacturing method comprises: installing the first cable portion in an extension chamber of the retractable cord reel; And Winding the second cable portion over a spool of retractable cord reel; The method of manufacturing a flat-round conductive cable, further comprising the step. (a) withdrawing a plurality of conductive members arranged side by side parallel to each other to form a first cable portion in a flat state by a predetermined first length; (b) continuously drawing the plurality of conductive members by a second length; (c) twisting said second length of conductive member to form a rounded second cable portion; And (d) braiding a continuous jacket over the first and second cable portions to maintain the first cable portion in a flat shape and the second cable portion in a rounded shape; Method for producing a flat-round conductive cable for use in the cord reel, characterized in that consisting of a step. 29. The method of claim 28, wherein the braided layer comprises a conductive material. 29. The method of claim 28, wherein the manufacturing method comprises: installing the first cable portion in an extension chamber of the retractable cord reel; And Winding the second cable portion over a spool of retractable cord reel; A method of making a flat-round conductive cable for use in a cord reel, further comprising the step. (a) providing a first length of a plurality of conductive members; (b) braiding first lengths of conductive members arranged parallel and side by side to form a first cable portion in a flat state; (c) providing a second length of the plurality of conductive members, the second length being continuous and unsealed with the first length; And (d) twisting said second length of conductor to form a second cable portion in a rounded state; Method for producing a flat-round conductive cable, characterized in that consisting of steps.

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