Bobbin for winding long objects and method for loading long objects

Abstract

To provide a bobbin for winding a long object, which enables a store to easily replace a wound long object, thereby eliminating wasteful transportation and realizing reduction in disposal costs and environmental load. The problem was solved by a bobbin for winding a long object, which has a cylindrical portion, a first flange portion, and a second flange portion, and which winds a long object in a spiral and in layers along a generatrix of the cylindrical portion, wherein a first part forming a portion equal to all or substantially all of the cylindrical portion is fixed to one of the first flange portion and the second flange portion, and a second part insertable into the first part is fixed to the other of the first flange portion and the second flange portion, one of the first part and the second part has a groove, and the other of the first part and the second part has a convex part that enters into the groove, and when the second flange portion is rotated in a predetermined direction relative to the first flange portion with the convex part inserted into a starting end of the groove, insertion of the second part into the first part is completed.

Description

[Technical field]

[0001] The present invention relates to a bobbin for winding a long object, which is used for pulling out a wound long object such as a hose, tube, or signal line cable at a predetermined length, cutting it, and selling it, and to a method for loading a long object. [Background technology]

[0002] Conventionally, when manufacturers deliver long objects such as hoses, tubes, signal cables, etc. to stores such as home improvement centers and hardware stores, the long objects are generally delivered in a fixed length, such as 50 m or 25 m, wound on bobbins made of paper, wood, or plastic. The bobbins are then rotatably displayed on display shelves at the stores, and the required length of the long objects for sale is pulled out and cut for sale according to customer requests (see Patent Document 1). The technology described in Patent Document 1 makes it possible to smoothly install and replace the bobbins when replacing them. Patent Document 2 also describes a display shelf in which a bobbin is placed and supported on a pair of rollers, and the bobbin is rotated to pull out a hose. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-165868 A [Patent Document 2] Patent No. 5348637 Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology described in Patent Document 1, when all the long objects to be sold are pulled out, the empty bobbins are replaced with bobbins loaded with long objects without being re-wound at the retail store, but the empty bobbins must be returned to the manufacturer or discarded. The manufacturer that receives the empty bobbins checks the damage status of the empty bobbins, cleans them, and winds the long objects around them if they can be reused, and delivers them to the retail store again. Returning the empty bobbins to the manufacturer leads to waste of transportation costs, and even if the bobbins are checked for damage, cleaned, or discarded, there are problems such as costs and environmental burdens. This also applies to the technology described in Patent Document 2.

[0005] The present invention has as its object to address such problems, and to provide a bobbin for winding long objects and a method for loading long objects that enable retailers to easily replace wound long objects, thereby eliminating wasteful transportation and reducing the costs of checking for damage, cleaning, or disposal, as well as the environmental impact. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a bobbin having a cylindrical portion, a first flange portion, and a second flange portion, and around which a long object is wound in a spiral and layered manner along a generatrix of the cylindrical portion, a first part constituting a portion equal to the entire or substantially entire cylindrical portion is fixed to one of the first flange portion and the second flange portion, and a second part insertable into the first part is fixed to the other of the first flange portion and the second flange portion, one of the first part and the second part has a groove, and the other of the first part and the second part has a protruding part that enters the groove, and when the second flange portion is rotated in a predetermined direction relative to the first flange portion with the protruding part inserted into a start end of the groove, insertion of the second part into the first part is completed. and the groove has a return portion at its end facing in a direction opposite to the insertion direction. It is characterized by: In order to achieve the above object, the present invention provides a method for producing a bobbin part with a cylindrical portion, a bobbin part without a cylindrical portion, and a long object wound in a spiral and layered manner and bound together, a step of loading the long object into the cylindrical portion of the bobbin part with a cylindrical portion, a step of positioning the bobbin part without a cylindrical portion relative to the bobbin part with a cylindrical portion into which the long object has been loaded such that the grooves and protrusions of both bobbin parts face each other, and a step of rotating the bobbin part without a cylindrical portion in a circumferential direction relative to the bobbin part with a cylindrical portion with the protrusions inserted into the grooves, The protrusion is inserted into a return portion provided at the end of the groove in a direction opposite to the insertion direction, and completing the engagement of both bobbins. [Brief description of the drawings]

[0007] [Figure 1] 1A, 1B, and 1C are explanatory views showing the overall configuration of a bobbin for winding a long material according to an embodiment A of the present invention, in which FIG. 1A is a left side view, FIG. 1B is a front view, and FIG. 1C is a perspective view. [Diagram 2] 2A and 2B are perspective views illustrating a bobbin for winding a long object according to embodiment A of the present invention, in which FIG. 2A shows a bobbin with a hose wound thereon, FIG. 2B shows an empty bobbin, and FIG. 2C shows a hose to be loaded onto the empty bobbin. [Diagram 3] FIG. 2 is an exploded perspective view illustrating a bobbin for winding a long material according to embodiment A of the present invention. [Figure 4] 4A and 4B are diagrams illustrating the components of the long object winding bobbin according to the embodiments A and B of the present invention, in which FIG. 4(a) shows embodiment A and its components, FIG. 4(b) shows embodiment B and its components, and FIG. 4(c) shows each component individually. [Diagram 5] 10A to 10C are diagrams for explaining the mechanism of action when a second part is attached to a first part in the long material winding bobbin according to embodiment A of the present invention. [Figure 6] 10A to 10C are photographs illustrating the flow of work when a hose is loaded onto an empty bobbin for winding a long material according to embodiment A of the present invention. [Figure 7]FIG. 13 is an explanatory diagram showing only the first part for understanding embodiments C and D of the present invention. [Figure 8] 8A and 8B are diagrams illustrating a long-item winding bobbin according to embodiment E of the present invention, together with its constituent parts, in which FIG. 8(a) is a diagram showing the constituent part alone, FIG. 8(b) is a diagram showing the stage before the second part is attached to the first part, and FIG. 8(c) is an enlarged view of portion P in FIG. 8(b). [Figure 9] 9(a) is a diagram showing the state in which the second part is attached to the first part for a long material winding bobbin relating to embodiment E of the present invention, FIG. 9(a) is a diagram showing the completed attachment state, FIG. 9(b) is an enlarged diagram of the R part of FIG. 9(a), and FIG. 9(c) is a cross-sectional diagram looking toward the inner diameter side at the R part of FIG. 9(a). [Figure 10] 10A and 10B are diagrams illustrating the operation for removing the second part from the first part for a long material winding bobbin according to embodiment E of the present invention, in which FIG. 10(a) is a diagram showing the state after the initial operation for removal has been performed, and FIG. 10(b) is an enlarged view of portion T in FIG. 10(a). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, each embodiment of the present invention will be described in detail with reference to the drawings. However, the drawings are created for the purpose of explanation, and in order to make the drawings easier to understand, some members not necessary for the explanation may not be shown intentionally. In addition, some members may be shown intentionally large or small for the purpose of explanation, and the drawings are not drawn to an accurate scale. In particular, in one drawing, even if it is not a partially enlarged view, different scales may be used depending on the parts. <Embodiment A> (Overall bobbin configuration) The long-item winding bobbin of embodiment A of the present invention is a hose bobbin used for pulling out a wound hose at a predetermined length, cutting it, and selling it. When the hose has been pulled out completely and is empty, the bobbin is designed so that a hose can be loaded at a sales store or the like.

[0009] Fig. 1 is an explanatory diagram showing the overall configuration of a long object winding bobbin according to embodiment A of the present invention, with Fig. 1(a) being a left side view, Fig. 1(b) being a front view, and Fig. 1(c) being a perspective view. Fig. 2 is a perspective view explaining a long object winding bobbin according to embodiment A of the present invention, with Fig. 2(a) showing a bobbin with a hose wound thereon, Fig. 2(b) showing an empty bobbin, and Fig. 2(c) showing a hose to be loaded onto the empty bobbin. Fig. 3 is an exploded perspective view explaining a long object winding bobbin according to embodiment A of the present invention.

[0010] A long object winding bobbin 100 according to embodiment A of the present invention is composed of a cylindrical portion and two flanges, as shown in Figs. 1 and 3. As a specific structure, a first part 11 is fixed to a first flange portion 1, and a second part 21 is fixed to a second flange portion 2. The second part 21 can be inserted into the first part 11, and when inserted, the first part 11 and the second part 21 form the cylindrical portion of the bobbin. The first part 11 is assembled with eight parts that are divided into two in the axial direction and four in the circumferential direction. The second part 21 is also assembled with four parts. However, whether or not to divide it and the number of divisions can be set arbitrarily.

[0011] The components of the first flange portion 1 and the second flange portion 2, the first part 11 and the second part 21 can be formed of, for example, polyolefin resin, polyamide resin, polystyrene resin, polyacetal resin, vinyl resin, lightweight metal parts such as aluminum, paper, wood, etc., which are made of thermoplastic resin, but any material can be used as long as it is robust. Since various uneven parts need to be formed on the surface due to the structure, thermoplastic resin is manufactured by injection molding. However, as long as the uneven parts can be processed by casting, pressing, cutting, etc., the use of other materials is not prevented. In addition, the materials may be changed and combined for each part, or may be composited. Specifically, thermoplastic resins are suitable, and polypropylene, polyethylene, polystyrene, nylon, styrene-butadiene-acrylonitrile copolymer (ABS), acrylonitrile-ethylene-styrene copolymer (AES), polyacetal, and rigid polyvinyl chloride are preferable, and polypropylene is more preferable.

[0012] The bobbin 100 loaded with the hose H shown in Fig. 2(a) is pulled out to the required length according to customer demand, cut and sold, and eventually becomes an empty bobbin 100 as shown in Fig. 2(b). After this, in the past, it was replaced with a bobbin with a hose loaded, but as shown in Fig. 3(c), only the hose H is delivered from a manufacturer, wholesaler, etc., and this hose H is configured so that it can be loaded into the empty bobbin 100 at the retailer. The structural features that enable this will be explained.

[0013] The first component 11 has a first component surface 111, a groove 112, and a return portion 113. The second component 21 has an outer surface 211, a protrusion 212, and an insertion side surface 213. When the insertion of the second component 21 into the first component 11 is completed, the first component surface 111 and the outer surface 211 become substantially flush with each other and together serve as the surface of the cylindrical portion of the bobbin 100.

[0014] 3, the first component surface 111 constitutes substantially the entire cylindrical portion, and the insertion side surface 213, which occupies a large area of ​​the second component 21, is covered by the first component 11. However, the outer surface 211 of the second component 21 also constitutes a small portion of the surface of the cylindrical portion. However, the second component 21 may be configured such that the entire second component 21 is inserted into the first component 11, that is, such that the first component surface 111 constitutes the entire surface of the cylindrical portion.

[0015] The grooves 112 of the first component 11 are formed at parallel intervals to allow the projections 212 of the second component 21 to enter. In embodiment A, the grooves 112 are obliquely shaped with a gradient of 14 degrees ±2 degrees with respect to the direction along the surface of the flange, and are set to a length of 25 degrees ±2 degrees in the circumferential direction. For this reason, the second component 21 is rotated in the forward direction (the direction in which the insertion proceeds) while aligning the first component 11 so that the projections 212 enter the grooves 112, so that the insertion of the second component 21 into the first component 11 proceeds naturally and is eventually completed. From the operator's point of view, the operation feels like aligning a flange with a cylindrical portion with a flange without a cylindrical portion. Although the shape of the projections 212 in the figure is cylindrical, the shape is not limited as long as it can enter the grooves 112.

[0016] At the end of the groove 112, a return portion 113 is provided that is turned in a direction opposite to the insertion direction. Therefore, when the second part 21 is rotated 25 degrees relative to the first part 11 and the convex part 212 reaches the end of the groove 112, if a force is generated to open the bobbin 100 in the width direction, the convex part 212 will enter the return portion 113. In this state, even if the bobbin 100 is rotated in the opposite direction (the direction in which the intrusion retreats), the force is prevented from being generated. In the empty bobbin 100 shown in FIG. 1(b) and the like, a force to open the bobbin 100 in the width direction does not naturally occur, but in the state in which the hose H shown in FIG. 2(a) is fully loaded, the force of the hose H to expand acts as a force to open the bobbin 100. Note that the shape of the return portion 113 in the figure is a substantially semicircular groove, but the shape is not limited as long as it has the effect of opening the bobbin 100.

[0017] As mentioned above, the first component 11 is an assembly of eight parts, which will now be described. Fig. 4 is a diagram for explaining the components of the long object winding bobbin 100 according to embodiments A and B of the present invention, with Fig. 4(a) showing embodiment A and its components, Fig. 4(b) showing embodiment B and its components, and Figs. 4(c), 4(d), and 4(e) showing individual components. The parts that make up the first component 11 are easier to understand when using embodiment B, so the description will be given first with reference to embodiment B.

[0018] As can be seen by comparing Fig. 4(a) and Fig. 4(b), the bobbin of embodiment B is half the width of that of embodiment A. The long object winding bobbin 100 of embodiment B is configured with four parts obtained by dividing the first part 11 into four in the circumferential direction. Each part is made of the same material, and as shown in Fig. 4(c), each part is provided with a groove 112. That is, the first part 11 is provided with four grooves 112.

[0019] Similarly to the first component 11, the second component 21 is also configured with four parts that are divided into four in the circumferential direction. Each part is made of the same material, and as shown in Fig. 4(d), each part is provided with a protrusion 212. That is, similar to the first component 11, the second component 21 is provided with four protrusions 212.

[0020] The long object winding bobbin 100 according to the embodiment A has a configuration in which two sets of the first part 11 according to the embodiment B are connected in the generatrix direction of the cylindrical part. However, the two sets are connected in a state shifted by 22.5 degrees in the circumferential direction as shown in FIG. 4(a). That is, as shown in FIG. 4(c), one engagement claw 114 is fitted into the other engagement hole 115 arranged at a position 22.5 degrees away from the engagement claw 114 in the circumferential direction, thereby engaging the first part 11 with the second part 21. In this way, eight grooves 112 are provided in the embodiment A, but only four of them contribute to the engagement with the protrusion 212 of the second part 21. The first part 11 is connected to the first flange portion 1 by fitting one engagement claw 114 of the first part 11 into the engagement hole FH of the first flange portion 1 (see also FIG. 4(e)). In this way, four grooves 112 are provided as shown in FIG. 3. As shown in Fig. 4(d), the second flange portion 2 is connected by fitting one of the engagement claws 214 of the second part 21 into the engagement hole FH of the second flange portion 2, thereby achieving engagement (see also Fig. 4(e)). In this way, four protrusions 212 are provided, as shown in Fig. 3. In this embodiment, the first flange portion 1 and the second flange portion 2 are common parts, the engagement holes FH provided therein are the same shape, and the engagement claws 114 of the first part 11 and the engagement claws 214 of the second part 21 are also the same shape. However, the engagement mode between the first flange portion 1 and the first part 11 and the engagement mode between the second flange portion 2 and the second part 21 may be configured to be different.

[0021] The assembly of the first component 11 and the second component 21 is performed in the order of circumferentially adjacent steps of fitting the engagement claws into the engagement holes, and adjacent components are engaged with each other using a locking means, for example, a method of locking elastic locking claws and hooks, so that they do not easily come off. This engagement means may be any other method such as screws, pins, or adhesives, as long as they can be fixed to each other. The engagement holes FH of the first flange portion 1 and the second flange portion 2 are arranged in a plurality of turns in the outer diameter direction, and by preparing the first component 11 and the second component 21 according to the arrangement diameter of each turn, it is possible to form a cylindrical portion consisting of the first component surface 111 and the outer surface 211 of the second component 21. This is expected to have the effect of preventing or reducing bending or crushing by winding a long object with a large outer diameter or hardness with a large bending radius.

[0022] In this way, since the first part 11 is configured to be divided, and in particular, configured to be repeatedly connectable in the generatrix direction, it is possible to prepare a plurality of types of bobbins with different widths. Hoses vary in size and weight depending on the item, and the standard length also differs. Taking into consideration the winding length (standard length) and weight according to the size of the hose, the width of the bobbin is changed and selected so that the hose fits within the outer diameter of the bobbin flange. There are various kinds of hoses for sale, and some products are not particularly popular but are necessary for some customers. By dividing the first part 11 into parts, it is convenient to prepare bobbins according to the circumstances of each product.

[0023] (How to refill and replace the hose) When the hose is completely pulled out and becomes empty, how to load a hose at a dealer etc. will be described. Before describing the refilling or replacement operation, first, the mechanism of action regarding how the two members constituting the long object winding bobbin 100 according to embodiment A of the present invention are attached will be described.

[0024] 5 is a diagram for explaining the mechanism of action when the second part 21 is attached to the first part 11 in the long material winding bobbin 100 according to embodiment A of the present invention. In FIG. 5(a), the convex part 212 of the second part 21 is abutted against the edge of the first part 11, and the insertion side surface 213 of the second part 21 is visible. In this state, when the second part 21 is slightly rotated to the right in the drawing so that the convex part 212 of the second part 21 faces the entrance of the groove 112 of the first part 11, the convex part 212 can enter the groove 112. In this state, when the second part 21 is slightly pushed in and then rotated to the left in the drawing, the entry of the convex part 212 into the groove 112 progresses, and accordingly, the insertion of the second part 21 into the first part 11 also progresses.

[0025] Fig. 5(b) shows a state in which the protrusion 212 has penetrated into the groove 112 up to its end. In this state, if a force acts to spread the bobbin in the width direction (the generatrix direction of the cylinder), the protrusion 212 will penetrate into the return portion 113. Then, as shown in Fig. 5(c), once the protrusion 212 penetrates into the return portion 113, the second component 21 can no longer be rotated to the right in the drawing.

[0026] It can be seen from Fig. 5 that the insertion of the second part 21 into the first part 11 naturally proceeds as the second part 21 rotates leftward on the page. On the other hand, a force that spreads the bobbin in the width direction does not naturally occur in an empty bobbin as shown in Fig. 5. However, when a hose that is wound in a spiral and in layers is loaded onto the bobbin, a force that spreads the hose itself occurs, and the state of Fig. 5(c) naturally occurs.

[0027] This will be described with reference to Fig. 6. Fig. 6 is a photographic diagram illustrating the flow of work when a hose is loaded onto an empty bobbin 100 for winding a long material according to embodiment A of the present invention.

[0028] First, as shown in A, a hose and a bobbin part with a cylindrical part (a member in which a first part 11 is attached to a first flange part 1) are prepared. The hose is packed in a spiral and layered manner so that the inner diameter is approximately the outer diameter of the cylindrical part of the long material winding bobbin 100 as shown in Fig. 2(c) and the outer diameter is approximately the outer diameter of the flange outer periphery, but in order to prevent the hose from collapsing during transportation or storage, a paper core is fitted into the innermost diameter part, and the hose, including the core, is bound at several points (three points in Fig. 6) with binding bands made of resin or the like.

[0029] Next, as shown in B, the hose is dropped into a bobbin part with a cylindrical portion (a member having a first part 11 attached to a first flange portion 1), and the tie band is cut to release the hose from the tie band (not shown). Also, a bobbin part without a cylindrical portion (a member having a second part 21 attached to a second flange portion 2) is prepared.

[0030] Finally, as shown in C, the bobbin part without a cylindrical part is inserted into the bobbin part with a cylindrical part. As described above, the second flange part 2 is rotated so that the convex part 212 and the groove 112 face each other, and once the convex part 212 enters the groove 112, the second flange part 2 is rotated while applying a small force, and the insertion of the second part 21 into the first part 11 also progresses and is eventually completed. That is, it is possible to complete the insertion operation without visually checking the insertion part, but only by the sense of the hand when operating. After the insertion is completed, the return part 113 acts on the convex part 212, so that it does not rotate in the opposite direction. The action of cutting the wrapper band is the same even after the second flange 2 is assembled in the fixed position. Also, by cutting the wrapper band, the load is released and the force that spreads the hose is applied, which becomes the force that opens the bobbin parts.

[0031] Originally, the hose is measured and sold after being pulled out, so the direction in which the hose is pulled out and the direction in which the protrusion 212 enters the groove 112 are set to be the same. However, a situation may occur in which the hose is rotated in the opposite direction to return the hose that has been pulled out too far. In such a case, the return portion 113 and the protrusion 212 function effectively as a rotation prevention means. If this function is not provided, a special means or operation for preventing the protrusion 212 from falling out of the groove 112 is required. In particular, in a display shelf (Patent No. 5348637, under-roller display) in which the outer peripheries of the first flange 1 and the second flange 2 are placed and supported by a pair of rollers and the bobbin rotates when the hose is pulled out, the effect of preventing the parts from coming off each other due to the rotation of the bobbin is significant. After the hose is completely pulled out and the bobbin is empty, if the bobbin part without a cylindrical portion is pushed into the bobbin part with a cylindrical portion, the protrusion 212 will come off the return part 113. If it is rotated in the opposite direction in this state, the bobbin part without a cylindrical portion can be removed.

[0032] <Embodiment B> The long object winding bobbin 100 according to embodiment B of the present invention is a hose bobbin used for pulling out a wound hose at a predetermined length, cutting it, and selling it, and is a bobbin that allows a hose to be loaded at a store or the like when the hose is completely pulled out and becomes empty, but is a bobbin with half the width of embodiment A. That is, it is the bobbin shown in Fig. 4(b) already described.

[0033] Hoses vary in size and weight depending on the item, and the standard length also differs. The width of the bobbin is changed taking into consideration the wound length (standard length) and weight according to the size of the hose, and is selected so that the hose fits within the outer diameter of the bobbin flange. Half-width bobbins allow more types to be displayed in a set sales space. Also, while there are popular products, there are also products that do not sell frequently. However, even such products may be necessary for some customers. Also, having a wide selection of hoses is desirable from the viewpoint of customer attraction, and it is extremely convenient to load popular products into wide bobbins and less popular products into narrow bobbins, thus securing space and being able to display and sell many types of hoses. In this respect, the present invention, which allows the use of embodiment A and embodiment B in combination, is advantageous over conventional hose bobbins.

[0034] <Embodiments C and D> The long object winding bobbin 100 of embodiments C and D of the present invention is a hose bobbin used for pulling out a wound hose at a predetermined length, cutting it, and selling it. When the hose has been pulled out completely and is empty, the bobbin is designed so that a hose can be loaded at a store or the like. However, the shape of the groove is different from that of embodiments A and B.

[0035] Fig. 7 is an explanatory diagram showing only the first part for understanding embodiments C and D of the present invention, with Fig. 7(a) showing the groove of embodiment C and Fig. 7(b) showing the groove of embodiment D. For reference, Fig. 7(c) shows the groove of embodiment A or B. Note that each drawing is close to a front view or a development view of the part, but it is prepared solely for the purpose of explanation. Therefore, some elements such as the engagement claws and engagement holes are omitted.

[0036] As shown in FIG. 7(a), unlike embodiments A and B, embodiment C has a shape that does not have a gradient that is oblique to the generatrix. Although the advantage of the second part being naturally inserted into the first part by rotation is lost, even with the shape of embodiment C, it is possible to perform the operation by first pushing deeply into the first part and then rotating when it feels abutment. That is, even with embodiment C, the object of enabling the retailer to easily replace the wound long object is fully achieved. Note that embodiment C also has a return portion, and therefore the effect of preventing rotation in the reverse direction is achieved by the cooperation between the return portion and the protruding portion.

[0037] As shown in FIG. 7(b), unlike the embodiments A to C, the embodiment D has a shape that does not have a return portion, and the number of divisions in the circumferential direction is two, not four. Therefore, the length of the groove is long. At first, the second part is inserted into the first part by the rotation operation, but from the middle, the degree of insertion does not change, and only the rotation continues. Although the hose does not have a return portion, the force of the hose trying to expand acts as a force pressing the second member against the first member, so that the friction makes it difficult to rotate in the reverse direction. Even if the reverse rotation is allowed slightly, the length of the groove is long, so even if the hose is rotated in the reverse direction to return the hose that has been pulled out too much, the protrusion does not come out of the groove. Then, if the hose is rotated forward again in the direction of pulling out, the protrusion will again penetrate deeply into the groove. That is, even in the embodiment D, the problem of enabling a dealer to easily replace a long object to be wound is fully achieved.

[0038] <Embodiment E> The long-item winding bobbin 100 according to embodiment E of the present invention is a hose bobbin used for pulling out a wound hose at a predetermined length, cutting it, and selling it, and is a bobbin that allows a hose to be loaded at a store, etc., when the hose is completely pulled out and becomes empty. The embodiments A to C described so far have a turned-back portion, and the cooperation between the turned-back portion and the convex portion prevents rotation in the opposite direction, and is configured to prevent the second part from falling off the first part, but embodiment E takes prevention of falling off even further.

[0039] When a long object is added, if the second part of the second flange part is not completely fitted to the first part of the first flange part, i.e., if the convex part does not fully enter the return part, the second flange part may start to rotate in the opposite direction to the first flange part and may eventually fall off. Even after the second part is completely fitted to the first part, if a pressing force is generated in the generatrix direction inward on the second flange part for some reason, the convex part may leave the return part and enter the oblique part of the groove part as it is, and the second flange part may start to rotate in the opposite direction and may eventually fall off from the first flange part. Therefore, in embodiment E, a design is made to maintain the reliably inserted state of the convex part into the return part and prevent the convex part from accidentally leaving the return part.

[0040] Fig. 8 is a diagram for explaining the long object winding bobbin according to embodiment E of the present invention together with its components, Fig. 8(a) is a diagram showing the components alone, Fig. 8(b) is a diagram showing the stage before the second component is attached to the first component, and Fig. 8(c) is an enlarged view of part P in Fig. 8(b). Fig. 9 is a diagram for explaining the state in which the second component is attached to the first component for the long object winding bobbin according to embodiment E of the present invention, Fig. 9(a) is a diagram showing the state in which the attachment is completed, Fig. 9(b) is an enlarged view of part R in Fig. 9(a), and Fig. 9(c) is a cross-sectional view toward the inner diameter side at part R in Fig. 9(a). Fig. 10 is a diagram for explaining the operation for removing the second component from the first component for the long object winding bobbin according to embodiment E of the present invention, Fig. 10(a) is a diagram showing the state in which the first operation for removal has been performed, and Fig. 10(b) is an enlarged view of part T in Fig. 10(a).

[0041] In embodiment E, the second part 21' of the second flange portion has an outer surface 211, a convex portion 212, and an insertion side surface 213. The configuration up to this point is the same as in embodiments A to C. Embodiment E further has a rib 215. The rib 215 is displaceable toward the inner diameter side, and serves to fix the convex portion 212 to the return portion 113 of the first flange portion.

[0042] 8(a), the rib 215 is provided on the inside along the generatrix of the protrusion 212. Since a cut is provided on both sides where the protrusion 212 and the rib 215 are arranged, as shown in the figure, the rib 215 can be displaced toward the inner diameter side.

[0043] 8(b) and 8(c), even if the protrusion 212 is to be inserted into the groove 112 of the first component, the combined width of the protrusion 212 and the rib 215 is greater than the width of the groove 112, and the rib 215 is higher than the height of the lower end at the depth of the groove 112, so the protrusion 212 cannot enter the groove 212. However, the height of the rib 215 is lower than the protrusion 212, and the rib 215 has a semicircular convex shape and an inclined upper surface. Therefore, if the rib 215 is pushed in with some force, the rib 215 will be displaced and slip under the first component. This allows the protrusion 212 to enter the groove 112.

[0044] When the second component 21' is rotated from this state, the projection 212 advances in the groove 112, and the second component 21' is inserted into the first component 11 accordingly. FIGS. 9(a) and 9(b) show a state in which the projection 212 advances to the end of the groove 112, and then the second flange is pulled up toward the outside in the generatrix direction, so that the projection 212 advances into the return portion 113. The second flange can be easily pulled up because of the force of the displaced rib 215 trying to return to its original position. When the projection 212 advances into the return portion, the displacement of the rib 215 is eliminated, and therefore the projection 212 and the rib 215 are firmly fixed at the position of the return portion 113, as shown in the cross-sectional view of FIG. 9(c).

[0045] After the hose has been completely pulled out and the bobbin is empty, by pushing the second flange portion inward in the generatrix direction, as shown in Figures 10(a) and 10(b), the rib 215 is displaced and slips under the first component again, and the protrusion 212 is released from the return portion 113. By rotating it in the opposite direction in this state, it becomes possible to remove the bobbin part without the cylindrical portion.

[0046] In this way, in embodiment E including the rib 215, the second flange is completely fixed to the first flange by eliminating the displacement of the rib 215 after the bobbin attachment is completed. Also, since the operator can determine that the displacement of the rib 215 is eliminated by a sense of touch such as a click, it is possible to reliably prevent the bobbin for winding a long object from being used without being attached. Furthermore, the fixation by the rib 215 can sufficiently resist the stress that occurs irregularly during use, and does not cause the bobbin to come off inadvertently.

[0047] (Additional Note) As explained above in the section (How to refill / replace a hose), the inventors have also devised an embodiment of a hose to be loaded onto a bobbin for winding a long object according to an embodiment of the present invention that is suitable for transportation and storage. Therefore, below we will also present inventions for hoses (inventions for long objects) and inventions for methods of storing hoses (inventions for methods of storing long objects) that can be conceived from this perspective.

[0048] (Appendix 1) This is a long object that is sold by winding it in a spiral and layered manner along the generating line of the cylindrical portion of the bobbin, and is characterized in that it is wound around a core having the same length as the cylindrical portion of the bobbin, and the long object and the core are bound together by a binding means.

[0049] (Appendix 2) A method for storing long objects, comprising the steps of: preparing a core and a long object; winding the long object around the core; and binding the wound long object together with a binding means.

[0050] The long object winding bobbin according to each embodiment of the present invention has been described above in detail with reference to the drawings, and its structure has been described, but the specific configuration is not limited to these embodiments, and the present invention includes design changes within the scope of the present invention. For example, the first flange portion 1 has a groove 112 to which the first component 11 forming a cylindrical portion is fixed, the second flange portion 2 has a protrusion 212 to which the second component 21 is fixed and which enters the groove 112, and the second flange portion 2 is rotated to complete the insertion of the second component 21 into the first component 11. However, the first flange portion 1 may have a protrusion 212 to which the first component 11 forming a cylindrical portion is fixed, the second flange portion 2 has a groove 112 to which the protrusion 212 enters, and the second flange portion 2 has a groove 112 to which the second component 21 is fixed with a certain width margin, and the second flange portion 2 is rotated to complete the insertion of the second component 21 into the first component 11. In addition, the number of divisions in the circumferential direction of the first part 11 and the second part 21 has been described as four and two, but the number of divisions in the circumferential direction may be three. Also, if the manufacturing difficulty can be overcome, a structure without division may be used. The long object does not have to be a hose or a tube, but may be, for example, a communication cable. In other words, the object is any long object that is held by being wound in a spiral and in layers around the generatrix of the cylindrical part of the bobbin, and is sold by pulling out only the required length. [Explanation of symbols]

[0051] 100 Long-length winding bobbin (bohin) 1 First flange 11 First Part 111 First part surface 112 Groove 113 Return part 2 Second flange 21 Second part 21' Second part 211 Outer surface 212 Convex 213 Insertion surface 214 Engagement Claw 215 Ribs

Claims

1. A bobbin having a cylindrical portion, a first flange portion, and a second flange portion, and around which an elongated object is wound in a spiral and layered manner along a generatrix of the cylindrical portion, a first part forming a portion equal to the entire or substantially entire cylindrical portion is fixed to one of the first flange portion and the second flange portion, and a second part insertable into the first part is fixed to the other of the first flange portion and the second flange portion, one of the first component and the second component has a groove; the other of the first component and the second component has a protrusion that enters the groove, When the second flange portion is rotated in a predetermined direction relative to the first flange portion with the protrusion inserted into the groove at a start end thereof, insertion of the second component into the first component is completed; and The groove has a return portion at its end facing in a direction opposite to the insertion direction. A bobbin for winding a long object.

2. A bobbin having a cylindrical portion, a first flange portion, and a second flange portion, and around which an elongated object is wound in a spiral and layered manner along a generatrix of the cylindrical portion, a first part forming a portion equal to the entire or substantially entire cylindrical portion is fixed to one of the first flange portion and the second flange portion, and a second part insertable into the first part is fixed to the other of the first flange portion and the second flange portion, one of the first component and the second component has a groove; the other of the first component and the second component has a protrusion that enters the groove, The first component is configured such that a width of the bobbin can be varied by repeatedly connecting a plurality of identical members in a generatrix direction, When the second flange portion is rotated in a predetermined direction relative to the first flange portion with the protrusion inserted into the start end of the groove, the insertion of the second component into the first component is completed. A bobbin for winding a long object.

3. A bobbin having a cylindrical portion, a first flange portion, and a second flange portion, and around which an elongated object is wound in a spiral and layered manner along a generatrix of the cylindrical portion, a first part forming a portion equal to the entire or substantially entire cylindrical portion is fixed to one of the first flange portion and the second flange portion, and a second part insertable into the first part is fixed to the other of the first flange portion and the second flange portion, one of the first component and the second component has a groove; the other of the first component and the second component has a protrusion that enters the groove, The first component is composed of a plurality of divided members that are divided in a circumferential direction, When the second flange portion is rotated in a predetermined direction relative to the first flange portion with the protrusion inserted into the start end of the groove, the insertion of the second component into the first component is completed. A bobbin for winding a long object.

4. The groove has a return portion at its end facing in a direction opposite to the insertion direction.

3. The bobbin for winding a long material according to claim 2.

5. The groove has a return portion at its end facing in a direction opposite to the insertion direction.

4. The bobbin for winding a long material according to claim 3.

6. the other of the first component and the second component has a rib on a side of the protrusion in a direction in which the protrusion enters the groove, The rib is displaceable toward an inner diameter side of the other of the first component and the second component, By displacing the rib, the protrusion can enter the groove, and by releasing the displacement of the rib, the protrusion is fixed at the return portion.

6. The bobbin for winding a long material according to claim 1, 4 or 5.

7. The height of the rib is lower than that of the protrusion and is higher than the height of the lower end of the groove at the depth.

7. The bobbin for winding a long material according to claim 6.

8. The rib has a semicircular convex shape and an inclined upper surface.

7. The bobbin for winding a long material according to claim 6.

9. The groove has a gradient that is oblique to the generatrix over substantially the entire length.

4. The bobbin for winding a long material according to claim 1, wherein the bobbin is a bobbin for winding a long material.

10. A step of preparing a bobbin part with a cylindrical portion, a bobbin part without a cylindrical portion, and a long object wound in a spiral and layered manner and bound; loading the elongated object into the cylindrical portion of the bobbin part; a step of positioning the bobbin part without a cylindrical portion relative to the bobbin part with the cylindrical portion in which the long object is loaded, so that the grooves and protrusions of both bobbin parts face each other; a step of rotating the bobbin part without a cylindrical portion in a circumferential direction relative to the bobbin part with a cylindrical portion while the protrusion is inserted into the groove, and inserting the protrusion into a return portion provided at an end of the groove in a direction opposite to the insertion direction, thereby completing the engagement of both bobbins; A method for loading long objects, comprising:

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