JP2010247938A - Reel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve a reel allowing easy and quick assembling and disassembling and having a winding core and side plates that are firmly coupled. <P>SOLUTION: The reel includes a winding core 2 having a plurality of coupling pieces 22 and a pair of side plates 3 having a plurality of coupling slits 31 and a plurality of engagement holes 32. The plurality of coupling pieces 22 are inserted into the coupling slits 31, and engagement pieces 23 are folded and inserted into the engagement holes 32 so that engagement projections 24 are engaged with opening edge portions 34 forming engagement holes having a width smaller than a width between the right and left engagement projections of the engagement pieces from the winding core side, whereby the winding core 2 is coupled with the side plates 3. The engagement holes 32 are large enough in size that after the engagement pieces 23 are put over the engagement holes 32, the engagement pieces 23 are passed through the engagement holes 32 only by pressing it with a finger or a pressing tool without the engagement piece 23, the finger, or the pressing tool being blocked by the opening edges 34 of the engagement holes 32. Thus, the engagement pieces 23 are inserted into the engagement holes 32 easily and quickly. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a reel used for winding a strip-shaped product such as a hose or various cables, a strip-shaped product such as a packaging tape or a continuous terminal.

  A conventional paper reel includes a cylindrical paper tube as a winding core, and a reel is configured by joining side plates to both sides of a cylindrical edge of the winding core with a resin adhesive or the like. In such a reel, the paper tube material of the material has a cylindrical shape or a polygonal shape close to a cylindrical shape, and due to the property that it must be processed by applying an adhesive to the end side surface, it has a thickness that is more than necessary in terms of strength. It was necessary to have it on the side.

  For this reason, a reel has been proposed in which a cylindrical paper tube is made using a flat paper board, and both side edges are folded and glued together. However, one reel process is also required for the reel assembly operation. Furthermore, since it was necessary to wait until the adhesive was fixed, it took time to assemble the reel. Further, when glue is used, in the case of a paper-based material, there is also a drawback that the side plate tends to warp due to its property. Another issue with this type of reel is the need for dedicated tools and specialized skills or skill in reel manufacturing and assembly operations. In addition to the cost of raw materials such as paper tubes and adhesives, equipment costs and processing operations are also required. The problem was that the cost was high. Furthermore, since the paper tube of the material and the assembled finished reel are bulky, a large storage space and a corresponding warehouse fee are required to store them, and the transportation cost is high when transporting to the sales destination. The burden of various expenses other than manufacturing costs is also a problem. Therefore, in addition to countermeasures for providing a reel manufacturing facility in the vicinity of a reel purchaser or use place, various reels that do not use an adhesive have been proposed by technical improvements.

  For example, the carrier tape reel of Patent Document 1 is a reel including a winding core (7) and disk-shaped side plates (1) on both sides thereof, and each side plate (1) includes a plurality of circumferential plates. It has a 1st slit (3) and also has a 2nd slit (4) located in parallel with the inside. The winding core (7) is formed into a cylindrical shape by paperboard, and an insertion piece (9) that can be fitted to the first slit (3) of both side plates on both sides in the axial direction, and each insertion piece (9) A folded piece (10) that can be fitted into the second slit (4) is provided at the tip of the. Each insertion piece (9) is inserted into the first slit (3) of the side plate (1), the folded piece (10) is folded back and inserted into the second slit (4), and the two cores are fitted together. 7) and the side plate (1) are connected (see FIG. 3 of Patent Document 1).

Japanese Patent Laid-Open No. 11-157752

  The reel of Patent Document 1 consists of only an inexpensive paper core and side plate, and does not require adhesive glue or a dedicated tool, so that the cost is improved compared to the conventional reel. However, in order to fit the folded piece into the second slit, the circumferential length (horizontal width) and thickness of the folded piece, and the corresponding circumferential length (lateral width) and radial direction of the second slit. Each dimension of the width (vertical width) must be set almost equal. That is, it is necessary to closely connect without providing a play width in order to prevent removal. Therefore, in some cases, both hands or fingers must be used to insert the folded piece into the second slit. Further, even if the two-hand operation is performed, the folded piece is likely to hit the edge of the slit due to the fitting structure with a small play width, and the insertion into the second slit may not be performed smoothly. In particular, if the return piece hits the slit edge, the leading edge or middle abdomen is bent due to the nature of the paper, and the insertion operation becomes difficult. Therefore, the reel of Patent Document 1 takes time for assembling work, and it takes time to complete the assembly of the reel. The total cost including labor costs and the like is less advantageous than the conventional reel.

  Furthermore, when the width of the winding core is reduced, the folded piece interferes with the folded piece already inserted into the other side plate at the opposed position, and cannot be inserted well. That is, it is difficult to use a long and thick folded piece. Furthermore, since the folded piece is only inserted and fitted into the second slit, when the force is applied in the direction in which the side plate is removed, the folded piece is easily detached from the slit without being locked to the side plate or the like. If the width of the second slit is slightly wider than the thickness, or if the width is widened by repeated insertion failure and repeated insertion, the second slit can be removed and the sufficient strength can be maintained. Absent. On the other hand, in the slit formation stage, punching a narrow slit with respect to the paper thickness, especially corrugated cardboard, due to the characteristics of the corrugated cardboard material that is a flexible structure, the slit shape is deformed by the press at the punching process, etc. Therefore, even if a high-priced and high-precision punching machine is used, the production efficiency of the reel may be reduced due to the occurrence of defective products. Although it is conceivable to form the second slit as an incision, the thickness of the wound core folded piece or the like is limited, so that the required strength may not be obtained depending on the product to be wound.

  An object of the present invention is to provide a reel that can be easily and quickly assembled and disassembled, and that firmly connects a winding core and a side plate. In particular, it reduces the cost of raw materials such as paper tubes and adhesives, and does not require skilled skills and specialized tools in processing and assembly work, making it easy to assemble reels in places where strings or strips are taken up. Can reduce the processing equipment cost, assembly work cost, transportation cost, etc., reduce the storage space of the reel, and can be stored anywhere according to the order recipient, anyone at any time The object is to provide a reel capable of assembling a necessary quantity.

The reel according to claim 1 is:
A cylindrical core (2);
A pair of side plates (3) respectively joined to the cylindrical edges of the core (2) on both sides of the core (2);
The winding core (2) includes a plurality of connecting pieces (22) extending in the width direction of the winding core (2) from the cylindrical edges on both sides of the winding core (2) at a predetermined interval. Each of the plurality of connecting pieces (22) has a locking piece (23) having locking claws (24) protruding along the circumferential direction of the winding core (2) at both ends of the leading end side on both sides of the leading end side. )
Each of the pair of side plates (3) includes a plurality of connecting slits (31) drilled at predetermined intervals in the circumferential direction, and the center of the side plate (3) with respect to the plurality of connecting slits (31). A plurality of locking holes (32) located on the sides,
The plurality of connecting pieces (22) are inserted through the plurality of connecting slits (31), respectively, and the locking pieces (23) are folded back and inserted into the locking holes (32). The pair of side plates (3) are connected to both sides of the core (2) by engaging (24) with the opening edge (34) on the side of the core (2) of the locking hole (32). A reel to be played,
The lateral width of the locking hole (32) is smaller than the width between the left and right locking claws (24) of the locking piece (23) and is inserted through the connecting slit (31) and folded back. The locking piece (23) placed on the stop hole (32) and a finger or pressing jig for pressing the locking piece (23) are integrally penetrated, and the locking claw (24) is moved to the winding core (2). A reel characterized in that the reel is arranged to be able to be engaged with the opening edge (34) on the side.

  The reel according to claim 2 is the reel according to claim 1, wherein the locking piece (23) includes a folding line (25c), and the locking piece (23) covered with the locking hole (32). ) Is pressed and when the locking claw (24) comes into contact with the opening edge (34), the locking piece (23) is temporarily elastically deformed along the fold line and the It is characterized by being inserted into the locking hole (32).

  The reel according to claim 3 is a reel according to claim 1 or 2, wherein the winding core (2) is formed by a paperboard that can be connected in a cylindrical shape by engaging notches (26) provided on both side ends thereof. It is formed.

  The reel according to claim 4 is the reel according to any one of claims 1 to 3, wherein at least one of the plurality of connecting slits (31) confirms the amount of the object wound on the reel. It also serves as a display window (31a).

  According to the first aspect of the present invention, after the plurality of connecting pieces extending from the winding core are inserted into the connecting slits of the side plates, the locking pieces constituting the tip of the connecting pieces are further folded back. , The lateral width is inserted through the locking hole smaller than the width between the left and right locking claws of the locking piece while being bent, and the locking claw of the locking piece engages with the side plate from the winding core side at the opening edge thereof, The winding core and the side plate are connected. For this reason, even if a force is applied in the direction of disconnection, the locking claw is locked at the opening edge of the locking hole, the locking piece is difficult to come out of the locking hole, and the winding core and the side plate are strong. Can maintain connectivity.

  In addition, the locking piece is arranged on the locking hole by arranging the locking piece and the finger or the pressing jig integrally, that is, in a shape and size that can be inserted simultaneously. After covering, simply press the locking piece with a finger or pressing jig, and the locking piece and the finger or pressing jig penetrate the locking hole without being blocked by the opening edge of the locking hole. The locking piece can be easily and quickly inserted into the locking hole.

  That is, after inserting the locking piece of the winding core into the connecting slit of the side plate, the locking claw is easily and quickly engaged with the opening edge on the winding core side, for example, with one hand and one finger. As a result, the reel assembly operation can be performed very easily and quickly. In particular, in the reel, the engaging portion between the locking claw and the opening edge portion is provided in a plurality of places instead of one place, so the effect of shortening the engaging work time in the whole of the plurality of places is remarkable. It can be increased dramatically.

  Even if the cylindrical width of the winding core is narrowed, if the locking piece has already been inserted into the locking hole of the other side plate, the locking piece does not interfere with the other locking piece facing it. The locking piece can be easily and quickly inserted into the locking hole.

  Furthermore, when disassembling the reel into the winding core and the side plate, similarly, insert the locking piece into the opposite side of the insertion direction by inserting a finger or a pressing jig through the locking hole of the opposite side plate. By simply doing this, the locking piece can be easily and quickly detached from the locking hole.

  Therefore, the invention of claim 1 realizes a reel that can be assembled and disassembled easily and quickly and in which the winding core and the side plate are firmly connected. In particular, it reduces the cost of material costs, easily maintains standard quality without requiring specialized skills, skilled skills and specialized tools in processing and assembly work, reduces processing costs, and loads during reel storage and transportation Space can be saved and storage costs and transportation costs can be reduced. In addition, assembly laboratories can be set up anywhere to secure workers according to the order recipient, and the required quantities can be easily assembled at any time. Can be provided.

  According to the second aspect of the present invention, in the locking piece that is temporarily elastically deformed while being in contact with the opening edge of the locking hole and is inserted into the locking hole, a crease is further provided. When the locking piece is pressed with a finger or a pressing jig, the locking piece is more easily bent along the fold line and can be pressed with a lighter force. Therefore, the locking piece can be inserted into the locking hole more easily and quickly without being blocked by the opening edge.

  And although it is bent and deformed temporarily along the fold line, the deformation is restored after insertion, so both locking claws protrude beyond the width of the opening edge of the locking hole on both sides to disconnect the connection. Even if a force is applied in the direction, the locking claw engages with the opening edge, and the locking piece does not come out of the locking hole, and the winding core and the side plate are firmly connected.

  According to the invention described in claim 3, since the core is formed into a cylindrical shape by the paperboard which can be connected by interposing the notches provided on both side ends thereof, the core is manufactured at low cost. And a reel that can be easily assembled or disassembled into a cylindrical shape and can be assembled and disassembled easily and quickly at a lower cost.

  According to the fourth aspect of the present invention, a part of the display window also serves as the connection slit, whereby the structure of the side plate can be simplified and the manufacturing cost can be reduced.

The perspective view of one Embodiment of the reel of this invention. The winding core in the reel of FIG. 1 is shown, (a) is the perspective view, (b) is the front view, (c) is the development view. The front view of the side plate in the reel of FIG. The front view of one Embodiment of the reel of FIG. (A) The cut end view in the AA line of FIG. 4, (b) Sectional drawing in the BB line of FIG. FIGS. 2A and 2B are partial views showing a state in which the locking piece is inserted into the locking hole in the reel of FIG. 1, in which FIG. The figure of the state which the stop piece is pressed and deform | transforming, (c) is the figure of the state which is penetrated by the latching hole and the latching claw is engaging with the opening edge part. (A)-(c) is a series of sectional views showing how the locking pieces are detached from the locking holes. (A) is a figure which shows the example of a change of a locking hole, (b) is a figure which shows the example of a change of a latching claw, (c) is a figure which shows the example of a change of a 3rd crease.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows an embodiment of a reel 1. The reel 1 is used for winding various products such as cables and strip products. The reel 1 includes a winding core 2 and a pair of side plates 3. Hereinafter, each member will be described.

  As shown in FIGS. 2A and 2B, first, the core 2 has a cylindrical portion 21, and a plurality of connecting pieces extending on both sides of the cylindrical portion 21 with a predetermined interval in the circumferential direction thereof. 22. The winding core 2 of FIG. 2 has six connecting pieces 22 on each side of the cylindrical portion 21, and has a total of twelve connecting pieces 22 on both sides. Each connecting piece 22 has a first fold line 25a formed at the root portion thereof. Further, a second fold line 25 b is formed in the vicinity of the tip of the connecting piece 22, and a portion from the second fold line 25 b to the tip portion of the connecting piece 22 is defined as a locking piece 23. . If the second fold line 25b is not provided, the distal end portion of the second fold line 25b comes into contact with the locking hole 32 and bends to the locking piece 23. The locking piece 23 has a pair of locking claws 24 that protrude along the circumferential direction of the cylindrical portion 21 on both sides of the distal end side of the connecting piece 22. The third folding line 25c is formed in an inverted V shape. The size, length, width, thickness, etc. of the cylindrical portion 21, the connecting piece 22, the winding core 2, the locking piece 23, the locking claw 24, and the first to third fold lines (25a, 25b, 25c). May be adopted as appropriate.

  FIG. 2C shows a state in which the winding core 2 is expanded. The paperboard 2a constituting the winding core 2 has a fish bone shape in which a plurality of connecting pieces 22 extend perpendicularly to the longitudinal portion 21a on both sides of the longitudinal portion 21a forming the cylindrical portion 21 in the width direction. Cuts 26 are formed near both ends of the longitudinal portion 21a in the length direction. The winding core 2 having the cylindrical portion 21 is formed by rounding the longitudinal portion 21a into a cylindrical shape and engaging and connecting the cuts 26 at both ends. The fish-bone-shaped paperboard 2a can be obtained by die-cutting or cutting a paperboard material into a predetermined shape. Each crease line can be formed by a line pushing process or the like. The material of the winding core 2 is not particularly limited, and a paperboard is used in the present embodiment. However, a paper material such as cardboard or a flat plate that can be bent, such as plastic, may be used.

Here, as shown in FIG. 2C, in this embodiment, the length from the second fold line 25b of the connecting piece 22 to its tip is defined as the length L of the locking piece 23. When the second fold line 25 b is not provided on the piece 22, the distal end portion of the piece 22 becomes the length L of the locking piece 23 from the portion that is bent in contact with the locking hole 32. The circumferential width (horizontal width) of the connecting piece 22 is defined as D ₁ , and the circumferential width (lateral width) of the locking piece 23 including both locking claws 24 is defined as D ₂ .

  Next, as shown in FIG. 3, the side plate 3 has a disk shape and includes a shaft hole 33 at the center thereof. Further, in the side plate 3, a plurality of connection slits 31 arranged concentrically at equal intervals around the shaft hole 33, and the connection slits 31, so that the above-described plurality of connection pieces 22 can be respectively inserted. An integrally formed display window 31a is formed. In this example, four connection slits 31 and two display windows 31 a that also serve as the connection slits 31 are provided. In addition, a plurality of locking holes 32 (a book) are arranged near the shaft hole 33 from the connection slit 31 and the display window 31 a, coaxially toward the shaft hole 33 and concentrically with the shaft hole 33 as the center. In the example, 6) are drilled.

  The connection slit 31 is formed so that the connection piece 22 can be inserted into the slit. Further, the display window 31a is a hole that is formed so as to extend greatly in the outer peripheral direction compared to the connection slit 31 in order to display the remaining amount of the packaging tape and various cables wound around the winding core 2. . And the edge part by the side of the axial center of the connection slit 31 and the edge part by the side of the axial center of each display window 31a are located on the concentric circle centering on the axial hole 33. FIG. Thereby, the display window 31a is used not only as a window for displaying the remaining amount of tape or the like but also as the connecting slit 31. Furthermore, in the reel 1 after completion, the display window 31a exposes the cylindrical portion 21 to a large extent. Therefore, when attaching the strip-shaped product, it is possible to put in a hand from the display window 31a and perform the attachment work easily. The product can be wound on a reel 1.

  The locking hole 32 has a longitudinal width R and a lateral width that are edged by an opening edge 34 that includes an edge 34R that is parallel to the radial direction of the disk-shaped side plate 3 and an edge 34P that is orthogonal to the circumferential direction. P is a substantially rectangular hole, and the vertical width R and the horizontal width P may have any size, but the locking piece 23 is inserted into the locking hole 32 as described later, and The locking claw 24 of the locking piece 23 and the opening edge 34R are determined so as to engage from the winding core 2 side.

In this embodiment, the locking hole 32 has a vertical width R larger than the length L of the locking piece 23, a horizontal width P larger than the width D _{1 of the} connecting piece 22, and includes both locking claws 24. It is formed in a substantially rectangular shape so as to be smaller than the width D _{2 of the} locking piece 23. In addition, when the vertical width R is smaller than the length L of the locking piece 23, the locking piece 23 abuts on the axial side edge portion of the locking hole 32. As long as a finger or a pressing jig can be inserted integrally, it is included in the present invention.
Further, the aspect ratio (R / P) of the substantially rectangular locking hole 32 in the present embodiment is about 1 / 1.4, but R / P is not limited to this and may be any ratio. .

  When the side plate 3 having an extremely small diameter is used, if the aspect ratio R / P is less than 1/2 in the locking hole 32, the side plate is assumed to have a size that allows the finger to pass through the locking hole 32. Since the ratio of the hole with respect to the side plate meat | flesh part in 3 circumferential directions becomes large, the intensity | strength of a side plate cannot be ensured. On the other hand, the strength can be secured by providing the entire locking hole 32 small, but it becomes impossible to insert the finger, and a bar-like pressing jig thinner than the finger is required. The same applies to the case where the aspect ratio R / P is larger than 3/1. Therefore, if the aspect ratio R / P is set within a range of 1/2 to 3/1, a reel that can secure the strength of the reel and can be assembled only with fingers even when the side plate 3 having a very small diameter is used. Can be provided.

  The material of the side plate 3 is not particularly limited, but corrugated cardboard is used in the present embodiment, and the connecting slit 31, the display window 31a, the locking hole 32, and the shaft hole 33 described above are punched by a press machine or the like. And so on.

  In the present embodiment, the connecting piece 22 is formed on each side of the cylindrical portion 21 at six locations, the connecting slit 31 and the display window 31a of the side plate 3 in total, and the locking holes 32 at six locations. However, the number of locations is not limited at all, and can be increased or decreased according to the size of the reel. Similarly, the width and diameter of the cylindrical portion 21 of the winding core 2 can be freely set according to the width and amount of the tape to be wound.

  By connecting a pair of side plates 3 to the cylindrical edges on both sides of the winding core 2, the reel 1 shown in FIGS. 1 and 4 can be assembled. Hereinafter, a method for assembling the reel 1 will be described in detail.

  In order to join the pair of side plates 3 to the cylindrical edges on both sides of the winding core 2, the connecting pieces 22 extending from the winding core 2, the connecting slits 31 formed on the side plate 3, and the display windows 31 a, Are arranged so that both cylindrical edges of the winding core 2 are sandwiched between the pair of side plates 3 so as to face each other.

  Next, each connecting piece 22 is inserted through each connecting slit 31 and each display window 31a, and both cylindrical edges of the winding core 2 are brought into contact with each side plate 3, and then the connecting piece 22 is moved from the root portion to the first. It folds in the direction of the axial hole 33 along the fold line 25a. As shown in FIG. 5A, which is a cut end view taken along the line AA of FIG. 4, the first fold line 25a portion of the connecting piece 22 is located on the edge of the connecting slit 31 or the display window 31a on the axial core side. It is in contact.

  At this time, as shown in FIG. 6A, the substantially central portion of the locking piece 23 is located above the locking hole 32. By pressing the substantially central portion with a finger or a pressing jig so that the locking piece 23 is folded back into the locking hole 32 along the second fold line 25b, as shown in FIG. The locking piece 23 comes into contact with the opening edge 34R that borders the locking hole 32, and the locking piece 23 and the finger are deformed temporarily along the third fold line 25c by the elastic property of the paperboard. Alternatively, the pressing jig can pass through the locking hole 32 without being blocked by the opening edge 34 of the locking hole 32, and the locking piece 23 can be easily and quickly inserted into the locking hole 32. The pressing jig may be a rod-like one, and for example, a pencil or a screwdriver with a rounded corner at the tip so that the locking piece 23 is not damaged during pressing can be used. Further, in the case of a large-diameter reel in which the locking hole 32 can be provided considerably larger than the thickness of the finger, in addition to pressing with two to four fingers of one hand, for example, swinging smaller than the locking hole 32 A stick-like pressing tool with a simple plate attached to the tip can be used.

  Then, as shown in FIG. 6C, the original shape is restored by the restoring force of the paperboard, and both the locking claws 24 protrude beyond the length P of the locking holes 32 to the both sides. 24 and the opening edge 34R are engaged. The core 2 and the pair of side plates 3 are connected by performing the series of operations described above for all the connecting pieces 22. In addition, the degree of the restoring force or the degree of restoration of the locking piece 23 and the locking claw 24 does not matter. For example, even if it cannot be completely restored to the original flat plate state, such as being in contact with and locked to the side plate on the winding core side in a curved or bent state, any restoration is possible as long as the locking claw 24 is brought into contact with and locked on the side plate. It may be power and restoration degree.

  Further, by making the third fold line substantially V-shaped, when the locking piece 23 is inserted, the locking piece 23 bends and deforms along the V-shaped fold line 25c. Failure caused by direct contact between the opening edge of the locking hole and the locking piece, for example, the pressing part by the finger or the base part of the locking claw is bent and it is difficult to return elastically. It is difficult to cause a problem that the locking strength is lowered, for example, the claw is easily pulled out from the opening edge, and the connection strength between the winding core and the side plate can be ensured more reliably.

  Accordingly, even when a force is applied in a direction in which the side plate 3 is separated from the winding core 2, that is, in a direction in which the side plate 3 is disconnected, each locking claw 24 is locked by the opening edge 34R, and the locking piece 23 is locked. The core 2 does not come out of the hole 32 and is firmly connected to the side plates 3 on both sides thereof.

  5 (a) and 5 (b) show a cut end surface taken along the line AA and a cross section taken along the line BB in FIG. 4, and the pair of locking claws 24 are engaged with the opening edge 34, respectively. It shows how they are doing. Even when the width of the cylindrical portion 21 is reduced as in the reel 1 of the present embodiment, as shown in FIG. 5, the locking piece 23 is arranged so as to be folded over the opposing locking piece 23 </ b> A. At the time of assembly, the locking piece 23 can be easily and quickly inserted into the locking hole 32 without being interfered with the locking piece 23 </ b> A facing the locking piece 23 </ b> A. Therefore, the width of the cylindrical portion 21 can be freely set, and various types of tapes can be handled.

  Further, as shown in FIGS. 7A to 7C, when the reel 1 is disassembled into the winding core 2 and the side plate 3, the finger or the pressing jig is similarly inserted from the locking hole 32 </ b> A of the opposite side plate 3 </ b> A. Is inserted and the locking piece 23 and the finger or the pressing jig penetrate the locking holes 32 and 32A, and the engaging piece 23 is pushed in the direction opposite to the direction in which the substantially central portion of the locking piece 23 is inserted. The stop piece 23 can be easily and quickly detached from the locking hole 32. That is, the reel 1 can be disassembled easily and quickly.

  Accordingly, before assembling, the reel 1 can be easily and quickly disassembled after it has been used as a reel, and can be easily transported and loaded as a flat paper material from the manufacturing location to the assembling location. Further, the winding core 2 can be returned to a paperboard shape simply by unlatching the notches 26. That is, all the members can be made into a flat paper material, and disposal and the like are easy.

  The reel 1 of this embodiment includes a winding core 2 having a plurality of connecting pieces 22 and a pair of side plates 3 having a plurality of connecting slits 31 and locking holes 32, and the plurality of connecting pieces 22 are respectively side plates 3. A pair of latches protruding from the latching piece 23 is inserted into the latching slits 31 by folding back the latching pieces 23 constituting the distal end portions of the coupling pieces 22 and inserting them into the latching holes 32. The claw 24 engages with the side plate 3 from the winding core 2 side at the opening edge 34 forming the locking hole 32, and the winding core 2 and the pair of side plates 3 are connected. And after making the latching hole 32 into the shape and dimension which can insert the latching piece 23 and a finger | toe or a pressing jig, after covering the substantially central part of the latching piece 23 on the said latching hole 32, By simply pressing the locking piece 23 with a finger or pressing jig, the locking piece 23 and the finger or pressing jig penetrate the locking hole 32 without being blocked by the opening edge 34 of the locking hole 32. Thus, the locking piece 23 can be easily and quickly inserted into the locking hole 32.

  Further, when the reel 1 is disassembled into the winding core 2 and the side plate 3, similarly, a finger or a pressing jig is inserted into the substantially central portion of the locking piece 23 from the locking hole 32A of the opposite side plate 3A. The locking piece 23 can be easily and quickly detached from the locking hole 32 simply by pressing in the direction opposite to the inserted direction. Therefore, the reel 1 according to the embodiment of the present invention can be easily and quickly assembled and disassembled, and can maintain the strong connection between the winding core 2 and the side plate 3.

[Example of change]
Although the present invention has been described in detail with the above embodiment, this is merely an example, and does not limit the scope of the claims. The technical scope of the invention described in the claims includes various modifications and changes of the specific examples illustrated above.

  For example, the material of the winding core and the side plate is not limited to paper, and it is also possible to adopt a strong material such as a flexible plastic for the winding core and hard plastic, metal, or wood for the side plate. Furthermore, the winding core is made of paper and the side plate is made of a material such as plastic, or vice versa.

  Further, regarding the installation interval of the plurality of connecting pieces of the winding core, or the respective lengths thereof, for example, the lengths of the adjacent connecting pieces may be alternately formed to be long and short. In this case, the locking piece of the connecting piece and the locking hole are locked and connected by arranging the locking hole of the side plate so as to be close to or far from the axis. Similarly, the connection slits may be arranged at different distances from the axis. These are suitable for increasing the strength of the side plate by shifting the locking portion when a large number of connecting slits and locking holes are provided.

  Further, the shapes of the locking holes and the locking pieces are not limited to the shapes exemplified in the embodiment. For example, the locking hole can be formed in a triangular shape, a trapezoidal shape, an elliptical shape, or the like. The locking piece and the finger or the pressing jig can be easily and quickly inserted into the locking hole without being blocked by the opening edge that borders the locking hole. Any shape that can engage the opening edge from the winding core side is included in the locking hole and the locking piece of the present invention.

  FIG. 8A illustrates a modified example of the shape of the locking hole. The hole E is a hole in which a central portion of one edge (on the connecting slit 31B side) is further cut out in a rectangular hole and the outer contour is formed in a substantially flat T shape. 32B corresponds to the central notch of the one edge (on the connecting slit 31B side) described above. Also in this modified example, the locking piece is similarly disposed on the hole E, and the substantially central portion of the locking piece is pressed. Then, the locking piece is not brought into contact with the opening edge 34B of the hole E, but is folded back into the locking hole 32B with the long side edge of the above-described center notch as a base point and is inserted into the locking hole 32B. Is done. Then, the locking claw is engaged with the opening edge 34B. That is, also in the modified example, the core and the side plate can be easily, quickly and firmly connected.

  FIG.8 (b) illustrates the example of a change about the shape of a latching piece and a latching claw. The locking claw is not limited to the shape illustrated in the embodiment as long as it can be engaged with the opening edge, and as illustrated in FIG. 8B, a trapezoidal locking piece 23B1, a triangular shape, The locking piece 23B2 or a horizontally long oval locking piece 23B3 may be used.

  FIG. 8C illustrates a modification example of the third fold line. Even with the fold line 25cB1, it is possible to provide a reel that can easily, quickly and firmly connect the winding core and the side plate, which are the object of the present invention, but the fold line is substantially inverted V-shaped as in the above embodiment. The reel 1 does not bend at the root, and the reel 1 has further strength. Get.

(Appendix)
In claim 1 according to the present invention,
The locking hole is a substantially rectangular hole having a length R in the radial direction and a length P in the circumferential direction, and the ratio R / P of the length R to the length P is 1 /. The reel according to claim 1, wherein the reel is within a range of 2 to 3/1.

DESCRIPTION OF SYMBOLS 1 Reel 2 Winding core 21 Cylindrical part 22 Connection piece 23 Locking piece 24 Locking claw 25c 3rd creasing line (folding line)
26 Notch 3 Side plate 31 Connecting slit 31a Display window 32 Locking hole 34 Opening edge R Locking hole radial length P Locking hole circumferential length

Claims (4)

A cylindrical core,
A pair of side plates respectively joined to the cylindrical edge of the winding core on both sides of the winding core,
The winding core includes a plurality of connecting pieces extending in the width direction of the winding core at a predetermined interval from the cylindrical edges on both sides of the winding core, and each of the plurality of connecting pieces has a tip thereof It has a locking piece having a locking claw protruding along the circumferential direction of the winding core on both sides.
Each of the pair of side plates includes a plurality of connection slits that are formed at predetermined intervals in the circumferential direction, and a plurality of locking holes that are located closer to the center of the side plate than the plurality of connection slits. Has
The plurality of connecting pieces are inserted through the plurality of connecting slits, respectively, the engaging pieces are folded back and inserted into the engaging holes, and the engaging claws are opened on the winding core side of the engaging holes. A reel in which the pair of side plates are coupled to both sides of the winding core by engaging with a portion;
The locking hole has a lateral width smaller than the width between the left and right locking claws of the locking piece, and is inserted into the connecting slit and folded back so as to cover the locking hole. A reel that is arranged so that a finger or a pressing jig that presses it can be integrally penetrated so that the engaging claw can be engaged with an opening edge on the winding core side. .   The locking piece comprises a fold line, and when the locking piece placed on the locking hole is pressed and the locking claw comes into contact with the opening edge of the locking hole, The reel according to claim 1, wherein the locking piece is temporarily elastically deformed along the fold line and is inserted into the locking hole.   The reel according to claim 1 or 2, wherein the winding core is formed of a paperboard that can be connected in a cylindrical shape by engaging notches provided on both side ends thereof.   The reel according to any one of claims 1 to 3, wherein at least one of the plurality of connecting slits also serves as a display window for confirming an amount of an object wound around the reel. .

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