Code Case
The compact cord case addresses bulkiness and aesthetic issues by storing cords in a thin, adjustable, rod-like form, ensuring neat wiring and easy handling.
Patent Information
- Application Number
- JP2020079863
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2020-04-28
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2040-04-28
AI Technical Summary
Conventional cord cases are bulky, create protrusions in wiring, waste space when storing cords, and require large surface areas, disrupting the aesthetic appearance and efficient organization of cords.
A compact cord case design that stores cords in a thin, rod-like form with adjustable length, allowing flexible bending and easy handling, using a peripheral wall, front and rear walls, and detachable extension covers to manage excess cord length.
The design provides a slim, aesthetically pleasing cord storage solution that maintains straight wiring organization, allows easy cord retrieval, and adjusts to various lengths without disturbing the surrounding environment.
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Abstract
Description
[Technical Field]
[0001] The present invention relates to a cord case for storing electrical cords (hereinafter simply referred to as cords) for power supply, communication, etc. used in electrical appliances and communication devices (hereinafter simply referred to as appliances). This case stores the portion of a single cord that does not include the connecting devices such as plugs and sockets at the end of the cord. This case stores the excess portion that is generated when wiring devices, organizes the wiring, and improves the aesthetic appearance of the surrounding area. [Background technology]
[0002] There are many electrical extension cords on the market, for example, 1m, 2m or 3m long. Cords attached to fixtures that are used in a fixed position are generally given a sufficient length so as not to cause inconvenience in setting up or handling the fixture. When a power socket or similar is located near the installation location of an appliance, the excess cord that is not very long can be wrapped or folded and placed near the appliance. The same process is also used for extension cords that are used when the length is not enough. However, in many cases, the excess cord is simply shoved into a gap in the wall without being wrapped or folded neatly. Disposing of excess cord neatly can be surprisingly troublesome. A proposal to simply fold or wind a cord into a cord case and store it therein is already known in the art, for example, as disclosed in Japanese Utility Model Publication No. 58-120155. The document disclosed in JP 10-310332 A includes a housing 1 having openings 17, 18 through which a cable 100 passes, a plurality of support members 2 arranged in a row inside the housing 1 and on which the cable 100 is hung, a plurality of length adjustment mechanisms 3 that pull in the cable 100 outside the housing 1, and a fixing member 4 that fixes the cable 100 to the housing 1. As a result, by sliding the knob 30 of the length adjustment mechanism 3 and using the slider 31 to hook and pull the cable 100 hung on the support member 2, the protruding cable 100 is pulled into the housing 1 and stored. Japanese Patent Application Laid-Open Publication No. 2007-119164 discloses a cable winding device that adjusts the winding / pulling out of a cable, in which a plurality of fixed winding shafts are provided in a line at intervals on two upper and lower support plates inside a case, and a plurality of movable rotating shafts are supported by the two support plates and positioned between the plurality of fixed winding shafts, and are movable in directions toward and away from the fixed winding shafts; excess cable is hung alternately in a serpentine pattern between the fixed winding shafts and the movable rotating shafts, and winding springs with different spring forces provided between the two support plates move the plurality of movable rotating shafts in directions away from the fixed shafts with different forces, thereby pulling the cable. 15 and 16 of Japanese Patent Laid-Open Publication No. 2017-199889 show an example in which a cord is stored in a folded state. The cord case 1f has a thin, rectangular front view and is divided into a front wall 7f and a rear wall 8f so as to be able to open and close. The front wall 7f is formed with a peripheral wall 6f having a shallow depth and a front-to-rear width that can accommodate a single cord 15f. Excess cord 15f entering through a retraction cord opening 18f in a left side wall 4f of the peripheral wall 6f is wound in a folded state alternately in the left and right directions inside the front wall 7f to form a wound cord portion 16f, which is then led to the outside through an unretraction cord opening 20f in a right side wall 5f. In this example, the wound cord portion 16f is held within the case with its outer surface surrounded by the inner wall of the peripheral wall portion 6f and its front and rear surfaces covered by the inner walls of the front wall portion 7f and the rear wall portion 8f. The entire alternately folded wound cord portion 16f is housed within the front wall portion 7f and the rear wall portion 8f surrounded by the peripheral wall portion 6f. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-310332 [Patent Document 2] Japanese Patent Application Laid-Open No. 2003-264929 [Patent Document 3] Japanese Patent Application Laid-Open No. 2007-119164 [Patent Document 4] Japanese Patent Application Laid-Open No. 2017-199889 Summary of the Invention [Problem to be solved by the invention]
[0004] Conventional cord cases are thick and large, resulting in protruding portions in the flow of cord wiring. As a result, it is difficult to organize adjacent cords. Also, when storing cords as a wound cord inside the case, wasted space is created in the center of the wound cord. In cord cases where the cord is wound one or more times inside the case, overlapping portions of the cord occur depending on the number of turns, which results in a disadvantage in that the case becomes thicker depending on the number of turns. Furthermore, a cord case in which the cord is stored by folding it on one surface can be made thin, but has the drawback of requiring a large surface area. It is desirable that the cord case not create any noticeable ridges or large areas in the flow of the cord wiring and not interfere with the flow of the wiring.
[0005] In order to solve these problems, an object of the present invention is to provide a compact cord case that is thin and fits the thickness of a single cord. SUMMARY OF THE INVENTION An object of the present invention is to provide a cord case that is easy to fit onto narrow, straight cord wiring and blends in well. An object of the present invention is to provide a simple cord case that does not spoil the aesthetic appearance of the room. An object of the present invention is to provide a simple cord case that is easy to handle and can be stored in the shape of a single thin rod. An object of the present invention is to provide a case that makes it easy to store and remove cords and adjust the stored length. An object of the present invention is to provide a cord case that has a simple structure and allows cords to be easily stored. To provide a case that allows a cord to be smoothly pulled out and retracted and allows easy fine adjustment of the storage length. An object of the present invention is to provide a cord case whose storage length can be adjusted as desired according to the required storage length. An object of the present invention is to provide a cord case that can be flexibly bent and is easy to handle. [Means for solving the problem]
[0006] In order to achieve the above object, a cord case according to claim 1 of the present invention comprises a peripheral wall portion whose inner wall has a width in the front-to-rear direction that exceeds the thickness of a single cord and surrounds a bending loop portion of a bendable cord, front wall means on the front side of the peripheral wall portion, rear wall means on the rear side of the peripheral wall portion, a bending loop case having an opening for the bendable cord provided in a wall portion on one side of the peripheral wall portion, and one or more detachable extension portion cover means that cover the periphery of the extension portion of the bendable cord outside the opening for the bendable cord, and the bendable cord is folded in one direction to form one bending loop portion. The two strands form a rod-like extension of a certain length along each other. It is characterized by: Here, the front wall means and the rear wall means may be walls that cover the entire wall side, or may be walls that only cover the peripheral edge portion of a certain height to prevent the cord from protruding, and these are included.
[0007] The cord case according to claim 2 includes a peripheral wall portion whose inner wall has a width in the front-rear direction exceeding the thickness of a single cord and surrounds a bending loop portion on the left side of the bent cord, front wall means on the front side of the peripheral wall portion, rear wall means on the rear side of the peripheral wall portion, an opening on the left side of the bent cord provided in the right wall portion of the peripheral wall portion, and a left bending loop case provided in the left wall portion of the peripheral wall portion with a left-side lead-out outlet for the cord, and a right bending loop for the bent cord formed symmetrically with the left bending loop case. a right-side bending loop case having a peripheral wall portion surrounding a portion of the cord, a front wall means on the front side of the peripheral wall portion, a rear wall means on the rear side of the peripheral wall portion, an opening on the right side of the bending cord provided in the left wall portion of the peripheral wall portion, and a cord outlet on the right side of the cord provided in the right wall portion of the peripheral wall portion, and the bending cord is folded twice to the left and right to form a left bending loop portion and a right bending loop portion, and a portion between the left bending loop portion, the right bending loop portion, and the both bending loop portions The three extensions are aligned along each other to form a single rod-like extension. The left bending ring portion is stored in the left bending ring case, the right bending ring portion is stored in the right bending ring case, the left side of the extension portion is led out from an opening on the left side of the bending cord in the left bending ring case, the right side of the extension portion is led out from an opening on the right side of the bending cord in the right bending ring case, the left side of the one cord is led out to the left from the left cord lead-out port of the left bending ring case, and the right side of the one cord is led out to the right from the right cord lead-out port of the right bending ring case. Here, the front wall means and the rear wall means may be walls that cover the entire wall side, or may be walls that only cover the peripheral edge portion of a certain height to prevent the cord from protruding, and these are included.
[0008] A cord case according to claim 3 is the cord case according to claim 2, wherein the inner wall of the peripheral wall portion has a width in the front-rear direction that allows a plurality of cords to be placed therein, the bending cord is made up of a plurality of stages of bending cords following the bending cord, the left bending ring portion of the plurality of stages is housed in the left bending ring case, the right bending ring portion of the plurality of stages is housed in the right bending ring case, the left side of the extension portion of the plurality of stages is led out from an opening on the left side of the bending cord in the left bending ring case, and the right side of the extension portion of the plurality of stages is led out from an opening on the right side of the bending cord in the right bending ring case.
[0009] The cord case according to claim 4 is the cord case according to claim 2 or 3, wherein the extension portion of the bent cord has To bind the extension It is characterized by having one or more removable extension cover means surrounding it. [Effects of the Invention]
[0010] The present invention is configured as described above and therefore provides the following effects. By storing the cord in a long, narrow case that is bent long in a few times, a narrow cord case that is easy to wear and does not disturb the flow of the straight wiring is obtained. Furthermore, the cord can be stored straight inside the long and narrow case with a small number of folds, so that excess cord can be handled without any disorder, and the cord can be smoothly pulled out and stored. In addition, the thin and slender case makes it easier to organize adjacent wiring cords. In addition, by storing it in a single thin rod, we have created a simple and easy-to-use cord case that does not spoil the aesthetic appearance of the room. Furthermore, the length of the case can be changed to suit the required storage length, providing greater freedom in adjusting the storage length. The extension cover means may be in any form. of The number of such members can be arbitrarily determined and they can be provided at any interval, so that a flexible case can be obtained, allowing the entire case to be bent back and forth and left and right. [Brief explanation of the drawings]
[0011] [Figure 1] FIG. 1 is a partially cutaway front view of a cord case according to an embodiment of the present invention; [Figure 2] An enlarged cross-sectional view of 2-2 in FIG. 1 [Figure 3] FIG. 10 is a front view of a cord case showing another embodiment of the present invention. [Figure 4] An enlarged cross-sectional view of FIG. 3 taken along line 4-4. [Figure 5] FIG. 10 is a front view of a cord case showing another embodiment of the present invention. [Figure 6] Enlarged view of the left bending ring case in Figure 5 [Figure 7] 7-7 cross section in Figure 6 [Figure 8] FIG. 10 is a front view of a cord case showing another embodiment of the present invention. [Figure 9]An enlarged cross-sectional view of FIG. 8 taken along line 10-10. DETAILED DESCRIPTION OF THE INVENTION
[0012] Hereinafter, embodiments of the present invention will be described based on examples. 1 and 2 show an example of a code case. 1 is a view of the case as seen from the rear (back side). The bending ring case 2 of the cord case 1 has a rear wall portion 9 on its rear side. The cord case 1 is made up of a bending ring portion case 2 and an extension portion cover 3. The bending ring portion case 2 is made up of a peripheral wall portion 7 that surrounds a bending ring portion 6 formed on the left side of a bent cord 5 formed by bending a single cord 4, a front wall portion 8 that covers the front side of the peripheral wall portion 7, and a rear wall portion 9 that covers the opening on the rear side of the peripheral wall portion. The peripheral wall portion 7 surrounds the bending ring portion 6, and the front wall portion 8 and rear wall portion 9 cover the front and rear of the bending ring portion 6 to store the bending ring portion 6 inside. The front wall 8 has oblong window openings on the left and right sides. The rear wall 9 is formed as a border of a fixed height along the peripheral wall 7. A folding cord opening 10 is provided in the right wall of the peripheral wall 7, and two extensions 11 of the folding cord 5 are led out straight to the right from the folding cord opening 10. The bent cord 5 can be stored in the bent loop case 2 with the rear wall 9 side in a state where the bent loop 6 is inclined.
[0013] One extension section cover 3 is securely attached to the two extension sections 11 extending straight to the right of the bendable cord opening 10, with a certain distance from the outer end surface 12 of the bendable cord opening 10 to prevent movement. The extension section cover 3 is split at a dividing line 13 and is attached to the extension section 11 by a hook 14 that engages with a notch on the other side of the split. The extension section cover 3 can be easily removed when adjustment of the cord length is required. The extension section cover 3 can be attached so that it is flush with the outer end surface 12 of the bendable cord opening 10, but by leaving a gap, the flexibility of the cord exposed in this gap can be utilized to allow the extension section 11 to bend back and forth and left and right. The dividing line can be located at any position other than that shown here to create a split structure that allows the cord case to be opened and closed.
[0014] The cord case 1 of this embodiment can fully function as a cord case thanks to the bending ring case 2 and extension section cover 3. It is essential that the cord case 1 has two extension sections 11 that extend straight. The length of the extension section 11 from the bending ring case 2 is determined by determining the position of the extension section cover 3, and therefore the storage length of the cord case 1. The cord case 1 is 50 cm long and can store approximately 100 cm (1 m) of excess cord. The length and position of the extension portion cover 3 are optional, and the number and position of the extension portion covers 3 can be adjusted according to the length of the extension portion 11. The extension section cover means can be an openable and closable extension section case, or an extension section case that slides in and expands and contracts, or a flexible elastic tube such as rubber or a bellows-type expandable tube, or a detachable tape such as spiral tape or hook-and-loop fastener. A hole 16 is drilled at the left end of the bending ring case 2, which can be used to hang it vertically on a wall hook near the location of the wiring cord. This simple, single, thin, straight rod-shaped case does not spoil the aesthetic appearance of the room and provides sufficient organization for excess cord. The extension section 10 is thin and long, so it can be folded down along the cord. The size of the bending ring case 2 is determined by the minimum bending radius of the cord and can be determined as desired.
[0015] 3 and 4 show another embodiment of the cord case. In the following description of the embodiments, parts that are the same as those in the previously described embodiments or parts that have the same functions will be indicated by the same reference numerals with the suffixes a, b, c, and their explanations will be omitted as much as possible, and the differences will be mainly described. Here, the cord case 1a is composed of a left bending ring case 2a, a right bending ring case 2b, and an extension cover 3a between these two cases. Figure 3 is a view of the case from the rear (back side). The left bending ring case 2a and the right bending ring case 2b of the cord case 1a each have a rear wall 9a and a rear wall 9b on their rear sides. Figure 3 shows both cases open with the rear wall 9a and the rear wall 9b (not shown) removed.
[0016] The left bending ring case 2a is made up of a peripheral wall 7a whose front-to-back width exceeds that of a single cord and surrounds the left bending ring portion 6a formed on the left side of the bent cord, a front wall 8a that covers the front side of the peripheral wall 7a, and a rear wall 9a that covers the rear side of the peripheral wall 7a. An opening 10a for the left side of the bent cord is provided in the right wall of the peripheral wall 7a, and a left cord outlet 15a for leading out the left side of the cord is provided in the left wall of the peripheral wall 7a. The right bending ring case 2b is disposed symmetrically to the left bending ring case 2a at a fixed distance to the right of the left bending ring case 2a determined by the length of the bending cord, and is provided with a peripheral wall 7b whose height exceeds that of one cord and surrounds the right bending ring portion 6b formed on the right side of the bending cord, a front wall 8b that covers the front side of the peripheral wall 7b, and a rear wall 9b (not shown) that covers the rear side of the peripheral wall 7b. An opening 10b for the right side of the bending cord is provided in the left wall of the peripheral wall 7b, and a right cord outlet 15b for leading out the right side of the cord is provided in the right wall of the peripheral wall 7b.
[0017] The bent cord 5a is a bent cord obtained by bending one cord 4a twice, left and right, to form a left bent loop portion 6a and a right bent loop portion 6b within one plane. That is, one cord 4a enters the case from the left through the left cord outlet 15a of the left bending ring case 2a, passes under the peripheral wall of the case, exits to the right through the opening 10a on the left side of the bending cord, forms a lower extension 11a extending straight to the right, enters the right bending ring case 2b through the opening 10b on the right side of the bending cord of the right bending ring case 2b, passes under the peripheral wall of the case, forms a right bending ring portion 6b upward, bends to the left, exits to the left through the opening 10b on the right side of the bending cord, and extends straight to the left along the upper side of the lower extension 11a. The cord then re-enters the left bending ring case 2a through the left opening 10a of the bending cord in the left bending ring case 2a, where it forms a left bending ring portion 6a upward within the case, bends to the right, exits again to the right through the left opening 10a of the bending cord, forms an upper extension portion 11a extending straight to the right along the upper side of the extension portion 11a between them, and re-enters the right bending ring case 2b through the right opening 10b of the bending cord in the right bending ring case 2b, where it passes between the upper inner wall of the peripheral wall portion 7b and the right bending ring portion 6b within the case, and is led out to the right through the right cord lead-out opening 15b.
[0018] The excess cord portion is folded twice, alternately left and right, and the left bending loop portion 6a is placed inside the left bending loop case 2a, and the right bending loop portion 6b is placed inside the right bending loop case 2b. The rear walls 9a and 9b (not shown) are then closed to store the bending loop portions 6a and 6b inside the respective cases. In this way, the folded cord 5a of one cord 4a is stored inside the cord case 1a. In the cross-sectional view of the left bending loop case 2a in Figure 4, the front wall 8a and the rear wall 9a are separably joined at the joining surface 21 of the peripheral wall 7a.
[0019] The storage length of the cord case 1a is determined by the distance between the left and right bending ring cases, i.e., the length of the extension portion 11a. If the length of the extension portion 11a is short, only the left and right bending ring cases 2a and 2b are required, and extension portion cover 3a or the like is not necessary. Also, in the case of three straight cord extension portions 11a between the left and right bending ring cases, as in this embodiment, an extension portion cover is not necessarily required, and the left and right bending ring cases 2a and 2b alone can fully function as a cord case. This makes it possible to provide a cord case that is easy to attach to a straight cord wiring and that blends in well. As for the thin extension portion 11a formed between the left and right bending ring cases, if necessary to prevent the three cords from separating, the extension portion 11a can be bound into the form of a single cord by covering it with any number of extension portion cover means such as extension portion covers 3a of any length, as in the above-mentioned embodiment.
[0020] Figures 5 to 7 show another embodiment of the code case. This embodiment is basically the same as the code case of the embodiment shown in Figures 3 and 4. The same parts as those in the embodiment shown in Figures 3 and 4 are indicated by the same reference numerals, and a description of those parts will be omitted, and only the different parts will be described. Shaft hole means 22a and 23a are opened in the front wall 8a and rear wall 9a at approximately the center of the bending ring of the left bending ring portion 6a housed in the left bending ring case 2a. A left cord guide roller 26a, which has shafts 24a and 25a at its opposite ends that fit into the shaft hole means 22a and 23a, is rotatably supported between the front wall 8a and the rear wall 9a. The left cord guide roller 26a has a diameter that matches the inner diameter of the left bending loop 6a, and serves to smoothly guide the movement of the cord at the left bending loop 6a when adjusting the stored length of the cord. In this embodiment, the shaft hole means 22a and 23a are elongated in the vertical direction, allowing the cord guide roller 26a to move up and down in small increments. As the cord of the left bending ring portion 6a moves, uneven contact pressure between the cord and the peripheral wall portion 7a is equalized, allowing the cord to move smoothly. The shaft hole means 22a and 23a may be circular holes into which the shaft portions 24a and 25a are rotatably fitted, and include both elongated holes and circular holes. The right bending ring case 2b has the same structure, being completely symmetrical to this, and the right cord guide roller 26b smoothly guides the movement of the cord in the right bending ring portion 6b when adjusting the stored length of the cord.
[0021] Figures 8 and 9 shows another example of the code case. Figure 8 3 is a view of the case as seen from the rear (back side). This embodiment is basically the same as the cord case of the embodiment shown in Figs. 3 and 4 described above. In this embodiment, the width of the peripheral wall portions 7c and 7d from front to back is wide enough to accommodate two cords, and one cord 4c is folded twice to the left and right to form a left bending loop portion 6c and a right bending loop portion 6d within one plane, forming a folded cord portion 5c. Later, Further, the left bending ring portion 6'c and the right bending ring portion 6'd are formed, and the sheet is bent twice to the left and right. rear A folded cord portion 5'c is formed, Front and rear It is stored in the form of a two-tiered folded cord. In this way, the folded cord can be stored in multiple tiers. This allows the storage length of the case to increase as the number of tiers increases, making it possible to shorten the length of the case. In this embodiment, the extension 11c is provided with a ring-shaped plastic extension cover 3 having a shape that matches the cross-sectional shape of the extension 11c at a right angle to the axis. c is fitted in. A ring-shaped cover that molds to fit the shape of the cord bundle3 c When opened, the slit is wide enough to allow one cord to pass through, and its elasticity securely binds the extended section. [Explanation of symbols]
[0022] 1, 1a, 1b----------Code case 2, 2a, 2b, 2c, 2d------Bending ring case 3, 3a, 3c, ------------Extension cover 4, 4a, 4c-------------Code 5, 5a, 5c, 5'c--------Bending cord 6, 6a, 6b, 6c, 6'c, 6d, 6'd---bending ring section 7, 7a, 7b, 7d ---------Peripheral wall part 8, 8a, 8b, 8d, --------front wall 9, 9a---------------- Rear wall 10, 10a, 10c, 10d----Folded cord opening 11, 11a, 11c---------Extension part 12. 12a , 12b, 12c, 12d---outer end surface 13-----------------Dividing line 14.----------------Hook 15a, 15b, 15c, 15d---outlet 16----------------- hole 21------------Joint surface
Claims
1. A bending ring case comprising a peripheral wall portion whose inner wall has a width in the front-to-rear direction that exceeds the thickness of a single cord and surrounds the bending loop portion of a bending cord, front wall means on the front side of the peripheral wall portion, rear wall means on the rear side of the peripheral wall portion, and an opening for the bending cord provided in a wall portion on one side of the peripheral wall portion, and one or more removable extension portion cover means that cover the extension portion of the bending cord outside the opening of the bending cord, wherein the bending cord forms a single bending loop portion and two cords are bent in one direction to form an extension portion of a certain length that extends along each other like a single rod.
2. The left bending ring case has an inner wall having a width in the front-to-rear direction that exceeds the thickness of one cord and that surrounds the bending ring portion on the left side of the bending cord, front wall means on the front side of the peripheral wall, rear wall means on the rear side of the peripheral wall, an opening on the left side of the bending cord provided in the right wall of the peripheral wall, and a left bending ring case that is provided with a left lead-out outlet for the cord provided in the left wall of the peripheral wall, and a right bending ring case that is formed bilaterally symmetrically with the left bending ring case and surrounds the bending ring portion on the right side of the bending cord, front wall means on the front side of the peripheral wall, rear wall means on the rear side of the peripheral wall, an opening on the right side of the bending cord provided in the left wall of the peripheral wall, and a cord lead-out outlet for the right side of the cord provided in the right wall of the peripheral wall, and the bending cord is formed between one cord extending in the left-to-right direction. a left bending ring portion and a right bending ring portion are formed, and the portion is bent twice to the left and right, with three cords running parallel to each other between the left bending ring portion and the right bending ring portion to form an extension portion that extends like a single rod, the left bending ring portion is stored in the left bending ring case, the right bending ring portion is stored in the right bending ring case, the left side of the extension portion is led out from an opening on the left side of the bent cord in the left bending ring case, the right side of the extension portion is led out from an opening on the right side of the bent cord in the right bending ring case, the left side of the one cord is led out leftward from the left cord lead-out outlet of the left bending ring case, and the right side of the one cord is led out rightward from the right cord lead-out outlet of the right bending ring case.
3. A cord case as described in claim 2, characterized in that the inner wall of the peripheral wall portion has a width in the front-to-rear direction that can accommodate multiple cords, the bending cord consists of multiple stages of bending cords that follow the bending cord, the left bending ring portion of the multiple stages is stored in the left bending ring case, the right bending ring portion of the multiple stages is stored in the right bending ring case, the left side of the multiple stage extension portion is led out from the left opening of the bending cord in the left bending ring case, and the right side of the multiple stage extension portion is led out from the right opening of the bending cord in the right bending ring case.
4. 4. The cord case according to claim 2, further comprising one or more detachable extension cover means for covering the extension of said folding cord so as to bind said extension.
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