JP2004307207A - Bobbin of corrugated board collar - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bobbin of a corrugated board collar connectable with collar plates of both ends, and strengthening connecting strength so that a cylindrical shape is not deformed when a winding drum is the cylindrical shape. <P>SOLUTION: This bobbin is composed of a combination of the cylindrical winding drum of rounding cardboard or corrugated board, and a pair of collar plates joined to both ends. A large number of connecting pieces are respectively projected long at equal intervals in the peripheral direction on both ends of the winding drum. A laterally projecting checking claw is formed on the tip of the connecting pieces. On the collar plates, a through hole of the connecting pieces is formed with an allowance width in a position where the winding drums thrust each other on the cylinder edge. A fixing cutout for reversely inserting the checking claw on the tip of the connecting pieces is bored nearer the center than the through hole. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a winding drum for winding a long material and a bobbin of a corrugated cardboard flange in which at least a flange plate is made of corrugated cardboard among flange plates at both ends thereof.

  The bobbin of the corrugated cardboard flange is often constructed by assembling the winding drum with corrugated cardboard or cardboard, and is lightweight, easy to handle, and inexpensive. For example, it winds up various cables, packing ropes, and watertight rubber cords. However, the strength of the corrugated cardboard becomes a problem compared to wood and plastic, and therefore, in particular, in order to provide the strength of the connection between the winding drum and the flange plate, and the strength to maintain the shape of the winding drum. Various innovations have been made.

  Regarding the connection between the take-up drum and the flange plate, the take-up drum generally has a structure in which cardboard or cardboard is rolled into a cylindrical shape, so that cuts are formed at both ends of the cylindrical shape at equal intervals in the circumferential direction. By doing so, it is conceivable to provide a connecting piece that is bent at a right angle to the outer peripheral direction and adhere it to the flange plate. However, since the refraction line for bending the connecting piece at a right angle is not a perfect straight line due to the relationship along the arc, the connecting piece cannot be bent normally. In other words, forcible bending causes deformation of the drum edge.

  Regarding the connection between the winding drum and the flange plates at both ends, in Japanese Utility Model Laid-Open Publication No. 2-4864, projecting pieces in the longitudinal direction of the winding drum are protruded from the end of the winding drum at equal intervals, and Is provided. Further, in the same publication, the winding drum is composed of a number of body plates, is a polygonal cylinder type in which the body plates are sequentially connected in the turning direction, and each body plate has a U-shape having folds at both ends. In this case, the connection is made in the turning direction by fastening the folds of the adjacent body plates because they are bent.

  In such a bobbin of a corrugated cardboard flange, a portion where the folds are joined becomes a rib, and the strength of the winding drum is maintained. However, since the winding drum has a polygonal shape with the number of body plates, the winding of a long material is performed. There is a problem that the picking step is inconvenient, and there is a problem in connection with the flange plate that the protruding piece is easily pulled out from the connecting hole and that the entire assembling state is unstable.

  In view of the above circumstances, the present invention provides a corrugated cardboard flange in which the winding drum is cylindrical and can be connected to the flange plates at both ends so that the cylindrical shape is not deformed, and the connection strength is strong. The aim was to provide a bobbin.

  In order to achieve the above object, a first invention is a combination of a cylindrical winding drum formed by rolling up a cardboard or corrugated cardboard, and a pair of flange plates joined to both ends thereof. A large number of connecting pieces are protruded at equal intervals in the circumferential direction, and a check claw that protrudes laterally is formed at the end of the connecting piece. The through hole of the connecting piece is formed with a sufficient width, and the center of the corrugated cardboard flange is characterized by being provided with a notch near the center for inverting and passing the check nail at the tip of the connecting piece. Provide bobbins.

  In addition, the check claw at the tip of the connecting piece has a square shape protruding on both sides, a shape formed by protruding both sides of the base of an isosceles triangle, or both ends having a nearly circular shape protruding. It is desirable that the shape be easy to insert and hard to be removed, such as those formed by forming. Further, it is also preferable that the locking notch for the check nail formed in the flange plate is formed in a U-shape or a square having a bent end portion through which both the check nails of the connecting piece are bent once.

  Further, the second invention is composed of a combination of a cylindrical winding drum formed by rolling up a cardboard or corrugated cardboard, and a pair of flange plates fitted at both ends thereof. The connecting pieces are protruded at equal intervals in the circumferential direction, and the connecting pieces are formed with a halfway check claw for retaining that protrudes laterally on both sides in the insertion direction. A bent line is formed at the base end, and a bent line is formed in front of the halfway check claw. A corrugated cardboard bobbin is provided, wherein a stopper hole for piercing is provided, and a reverse plate is provided on the flange plate with a reverse through hole in which a connecting piece is hung between the reverse bent lines.

  In addition, it is desirable that the inverted broken line provided before the halfway check claw of the connecting piece is formed as a pair of inverted broken lines that are folded in two. It is also preferable that the inverted through hole provided in the flange plate is formed in a U-shape or a U-shape having bent end portions at both ends so that the halfway check claw once bends and passes through the connecting piece.

  Further, the third invention comprises a cylindrical winding drum formed by rolling up a cardboard or corrugated cardboard, and a pair of flange plates connected to both ends of the winding drum. A bobbin of a corrugated cardboard flange characterized in that a supporting plate is adhered to both sides to maintain a cylindrical shape.

  In the first and second inventions, since the bobbin of the corrugated cardboard flange is configured as described above, when the winding drum is unfolded, it is in the form of a centipede in which connecting pieces project in a foot shape on both sides. When it is rolled up and assembled into a cylindrical shape, the connecting pieces protrude at equal intervals along the circumference at both ends, so when assembling with the flange plate, pass the connecting pieces through each through hole and then hook each connecting piece sequentially. Insert into notches or holes. Since the hooked cut or inverted through hole has bent end portions at both ends, when inserting the connector, bend both check pawls of the connecting piece so that it passes through the bent end portion and then return. Since the check claws protrude on both sides beyond the length of the hole, the connecting piece never comes off, and the combination of the winding drum and the flange plate is firmly held.

  The connecting piece is bent at a right angle toward the center after passing through the through hole, but since the position is a little away from the end of the winding drum, the bending at a right angle becomes the cylindrical shape of the winding drum. It has no effect on deformation. Further, in the third aspect, the strip plate of the winding drum is abutted at both ends, and the state is maintained by bonding of the attachment plate. Therefore, a cylindrical shape having no steps so that the long material can be rolled conveniently and roundly. Will be retained.

  As described above, according to the bobbin of the corrugated cardboard flange of the present invention, since the winding drum is cylindrical and can be connected to the flange plates at both ends so that the cylindrical shape is not deformed, the long material is rounded. It is easy to wind up and can be assembled neatly, and since the connection strength between the winding drum and both flange plates is strong, there is an excellent effect that winding of various long materials can be smoothly performed without any trouble.

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

  FIGS. 1 to 7 show an embodiment of the present invention. The bobbin B of the corrugated cardboard is composed of a take-up drum 1 made of cardboard and corrugated cardboard flange plates 2 and 2 attached to both ends thereof. And a cardboard attachment plate 4 (FIG. 1). Note that corrugated cardboard can be used for the winding drum 1 and the attachment plate 4.

  The winding drum 1 has a belt-like shape formed at the width of the interval between the two flange plates 2 when viewed from the developed view (FIG. 2), and connecting pieces 3, 3,. The supporting plate 4 is applied to the inside so as to extend over both of the butting lines 20 at both ends thereof. Further, the adhesive tape 6 is adhered to the outside that is flush with the outer surface, and the cylindrical shape is held.

  Each connecting piece 3 is formed so as to become slightly narrower as it goes to the front end so that it can be easily inserted. In this case, both side edges of the connecting piece 3 are inclined in a direction approaching each other to make the width narrow. However, the width may be reduced by providing a step.

  As shown in FIG. 7, non-return claws 5 and 5 projecting laterally from the escape stopper protrude from both ends of the connecting piece 3 as shown in FIG. The check pawl 5 has a rounded tip corner so that there is no resistance to insertion, but the rear end has a right-angled locking angle. In addition, each connecting piece 3 is formed with bent lines 7 and 9 inward near the proximal end and near the distal end, respectively.

  The two flange plates 2, 2 are provided with a bearing hole 11 at the center of the circular shape, and through holes 13, 13, ... of the connecting piece 3 are formed at equal intervals along an imaginary circle around the bearing hole 11 ( (FIG. 3), and further provided with notches 15, 15,... That is, the connecting piece 3 is first passed through the through hole 13, and then the tip is passed through the notch 15 together with the two check claws 5, 5 to be first stopped.

  The through hole 13 is a horizontally long rectangle through which the connecting piece 3 can be passed together with the two check pawls 5, 5. However, the through hole 13 has a width with respect to the thickness of the connecting piece 3. Since the broken line 7 of the connecting piece 3 is bent after passing through the through hole 13, the bending of the connecting piece 3 at the broken line 7 hardly deforms the circular shape of the winding drum 1.

  The hook notch 15 is a U-shape or [] -shape having bent end portions 16 and 16 at both ends, and the width W of the tip of the connecting piece 3 is substantially equal to the length of the hook cut 15 (FIG. 4) When the two check pawls 5 and 5 at the front end are bent and passed through the end bent portions 16 and 16 and then returned, they will never come off (FIGS. 5 and 6).

  FIGS. 8 and 9 correspond to FIGS. 7A and 7B and show another form of the check pawls 5 and 5 at the tip of the connecting piece 3, respectively. In the connecting piece 3 of FIG. Are formed, and both sides of the base protrude to form check pawls 5,5. In the connecting piece 3 shown in FIG. 9, a circular piece is formed at the tip, and both sides protrude to form check pawls 5 and 5. However, the shape is not limited to these as long as it is easy to pass through the through-hole 13 and the latching cut 15 and is difficult to remove. For example, it goes without saying that a trapezoidal shape or a semicircular shape may be used.

  10 to 15 show another embodiment. In this case, the bobbin of the corrugated cardboard flange is joined to both the winding drum 1 and both flange plates 2 and 2 at both ends. Inner flanges 2a, 2a.

  When the winding drum 1 is viewed from its development view (FIG. 11), the winding drum 1 is also a centrifugal shape in which a plurality of strip-shaped connecting pieces 3, 3,. 3 has halfway check claws 21 and 21 protruding on both sides, and a protruding piece 22 is formed at the front end in the center of the width. A proximal bent line 23 in the outer peripheral direction is formed near the proximal end of the connecting piece 3, and a pair of inverted bent lines 25, 25 are formed in front of the halfway check claw 5 at approximately the thickness of the flange plate 2. . .. Are formed near the protruding base end of the connecting piece 3. In addition, in assembling the winding drum 1, similarly, the attachment plate 4 and the adhesive tape 6 are stuck together over both butting lines 20.

  The flange plate 2 has a disk shape in the above embodiment, but has a ring shape with an inner diameter to which the winding drum 1 fits. Inverted through holes 29 through which the connecting piece 3 passes are formed.

  Therefore, in order to attach the flange plates 2 and 2 to both ends of the winding drum 1, the winding drum 1 connecting piece 3 fitted inside the flange plate 2 is bent at the base folding line 23 on the outside while passing through the inverted through hole 29. The projecting piece 22 at the tip end of the connecting piece 3 thus folded into the inside of the flange plate 2 is stopped by being inserted into the stop hole 27 of the winding drum 1. Since the hook 21 does not come off, a stable assembled state is maintained.

  In order to allow the halfway check claws 21 and 21 to pass through the inverted through hole 29, the inverted through hole 29 is formed by a U-shaped notch having bent end portions 30 and 30 at both ends. The inner flanges 2a, 2a are inserted into the winding drum 1 before the flange plate 2 is attached, and are applied to the flange plate 2 so that a wire or a cord to be wound does not hang on the connecting piece 3.

FIG. 2 is a partially cutaway front view showing the bobbin of the cardboard flange according to the embodiment of the first invention. It is a development view of the winding drum in the bobbin of the same cardboard flange. It is a front view of the collar board in the bobbin of the same cardboard collar. It is a perspective view which shows the threading | operation operation | movement point of the connection piece for combining a winding drum and a flange plate. FIG. 2 is a sectional view taken along line AA of FIG. 1. It is a perspective view which shows the state which passed the connection piece through the notch. It is a top view which shows the connection piece in the bobbin of the same cardboard flange. It is a top view showing a connection piece by other embodiments. It is a top view which shows the connection piece by other embodiment. It is the front view which carried out the notch which showed the bobbin of the corrugated-cardboard flange which shows one Embodiment of 2nd invention. It is a development view of the winding drum in the bobbin of the same cardboard flange. It is a front view of the collar board in the bobbin of the same cardboard collar. It is a front view of the inner collar in the bobbin of the same cardboard collar. It is a perspective view shown in the middle of stopping one connecting piece in a partial perspective view of the bobbin of the same cardboard flange. It is a top view of the connection piece in the bobbin of the same cardboard flange.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Winding drum 2 Flange plate 3 Connecting piece 4 Attached plate 5 Non-return claw 7, 9 Fold line 13 Through hole 15 Hook cut 16 End bent part 20 Butt line 21 Halfway reverse claw 22 Tip protruding piece 23 Base end bent line 25 Inverted broken line 27 Stop hole 29 Inverted through hole 30 End bent portion

Claims (7)

  It consists of a combination of a cylindrical winding drum made of cardboard or corrugated cardboard, and a pair of flange plates joined to both ends of the winding drum. A number of connecting pieces are provided at both ends of the winding drum at equal intervals in the circumferential direction. Protrusions are formed, and a check claw is formed at both ends of the connecting piece, which protrudes laterally.The flange plate has a through hole for the connecting piece at a position where the winding drum abuts on the cylindrical edge with a sufficient width. A bobbin of a corrugated cardboard flange characterized by having a notch provided near the center thereof for inverting and inserting a check pawl at a tip of a connecting piece.   Non-return claw at the tip of the connecting piece has a square shape protruding on both sides, is formed by protruding both sides of the base of an isosceles triangle, or is formed by protruding both ends of a nearly circular shape The bobbin according to claim 1, wherein the bobbin has a shape that is easy to insert and hard to remove.   The latching notch for the check pawl formed in the flange plate is formed in a U-shape or a U-shape having an end bent portion through which both the check pawls of the connecting piece are bent once and passed therethrough. Item 3. The bobbin of a corrugated cardboard flange according to item 1 or 2.   It consists of a combination of a cylindrical take-up drum made of cardboard or corrugated cardboard and a pair of flange plates fitted to both ends of the take-up drum. Along with protruding at each interval, the connecting piece has a halfway check claw for retaining that protrudes laterally on both sides in the insertion direction, and a protruding base line that folds outside the flange plate at the protruding base end In addition, a reversing broken line is formed in front of the halfway check claw, and further, at both end edges of the winding drum, a stop hole is provided for a tip end where the connecting piece is inverted near the projecting position of the connecting piece, A bobbin for a corrugated cardboard flange, wherein the flange plate is provided with a reverse through hole in which a connecting piece is hung between the reverse broken lines.   5. The bobbin of a corrugated cardboard flange according to claim 4, wherein the inverted broken line provided in front of the halfway check claw of the connecting piece is formed as a pair of inverted broken lines that are folded in two.   5. The inverted through hole formed in the flange plate is formed in a U-shape or a U-shape having bent end portions at both ends so that the halfway check claw of the connecting piece once bends and passes therethrough. Or the bobbin of the corrugated cardboard flange of 5. It consists of a cylindrical take-up drum with cardboard or cardboard rolled up, and a pair of flange plates joined to both ends of the take-up drum. A bobbin of a corrugated cardboard flange, wherein the bobbin has a cylindrical shape.

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