JP2014058395A - Winding core with flanges - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding core with flanges which allows a user to quickly attach/detach flanges to/from both end parts of a core by simple operation, and which does not impair workability and the property of not emitting dust, when an object to be wound is wound around the core.SOLUTION: A winding core 1 with flanges includes: a cylindrical core 2; and a pair of ring shaped flanges 3 to be detachably attached to both end parts of the core. At both end parts of the core, there are provided connection end parts 21 to be fitted to inner peripheral edge parts 31 of the flanges. At the connection end part of the core and the inner peripheral edge part of the flange, there are provided: a bayonet connection mechanism 23, 24, 33 capable of connecting the core and the flange, by operation of relatively rotating the core and the flange in a predetermined direction, with the connection end part of the core and the inner peripheral edge part of the flange fitted to each other; and a latch mechanism 25, 26, 34, 35 for a stopper which is snap engaged when the core and the flange are relatively rotated in the predetermined direction, and of which the engagement is released by relative rotation of the core and the flange in a connection release direction.

Description

  The present invention relates to a core for winding a tape, a film, a thread, and the like, and more particularly to a flanged core in which flanges are provided at both ends of the core.

For example, a cover tape used as a cover material for a carrier tape is stored, transported and used while being wound around a core. Conventionally, a paper tube has been used as the winding core for the cover tape, but the cover tape is liable to collapse during transportation, and dust or the like may adhere to the cover tape.
On the other hand, a core provided with flanges at both ends of the core has also been known for a long time. For example, there is a core in which the flanges are fitted to both ends of the core by joining or bonding. In such a core, the flange cannot be easily removed from the core. However, when the wound object is wound around the core or when the wound object is rewound, the flange may become an obstacle. In addition, when transporting the core after the wound object is used up, there is a problem that the transportation efficiency is impaired because the core is bulky as long as the flange is attached.
Therefore, a winding core having a structure in which flanges are detachably attached to both ends of the core has been proposed. Specifically, for example, a core having internal threads formed at both end portions of the inner peripheral surface and a pair of flanges having a boss portion formed on the outer peripheral surface with external threads to be screwed to the female screws are included. A winding core is disclosed (see Patent Document 1 below).
However, in the case of the above-mentioned flanged core, there is a female screw on the inner peripheral surface of the core, so that the shaft inserted into the core may be caught by the female screw when winding the wound object, Since the flange mounting structure is based on screw joining, there is a risk that scraps are generated along with attachment and detachment and the like and adhere to the wound object.
In addition, there is a flanged core in which a flange is attached to both ends of the core with bolts, nuts, and screws (see Patent Document 2 and Patent Document 3 below). However, in the case of these cores, it takes time to attach and detach the flange, and there is a problem in workability.

Japanese Utility Model Publication No. 61-45090 JP 2006-1717 A JP-A-7-61716

  The object of the present invention is to enable quick attachment and detachment of the flange to and from both ends of the core by a simple operation. Further, the flange attachment structure allows the work to be performed when winding the wound object around the core. An object of the present invention is to provide a flanged core in which the property and non-dusting property are not impaired.

A first flanged core according to the present invention includes a cylindrical core and a pair of ring-shaped flanges that are detachably attached to both ends of the core. A connection end is provided with the outer peripheral portion cut away so as to be fitted to the peripheral edge, and the core and the flange are fitted in the connection end of the core and the inner peripheral edge of the flange. The bayonet coupling mechanism that can connect the two by rotating them relative to each other in a predetermined direction, and snap-engage with the relative rotation of the core and flange in a predetermined direction, while the core and flange are disconnected And a stopper locking mechanism that is disengaged by being relatively rotated in the direction.
According to the first flanged core, the inner peripheral edge of the flange is fitted to the connecting end of the core, and then the core and the flange are rotated relative to each other in a predetermined direction. While being connected and integrated, the connected state is maintained by the stopper locking mechanism. On the other hand, when the connected core and flange are relatively rotated in the connection release direction, the stopper locking mechanism is disengaged, and then the connection by the bayonet connection mechanism is released. It can be removed from the connection end. In the case of the flanged core, the flange mounting structure is composed of a bayonet coupling mechanism and a stopper locking mechanism, so there is no need to form anything on the inner peripheral surface of the core, and screw joining There is no possibility that scraps are generated with the attachment and detachment of the flange as in the mounting structure according to.
Therefore, according to the first flanged core of the present invention, it is possible to quickly attach and detach the flanges to both ends of the core by an extremely simple operation, and to wind the wound object around the core. Since there is no possibility that workability such as time or non-dusting property is impaired, it can be suitably used as a winding core for a cover tape, for example.

In the first flanged core according to the present invention, as a preferred aspect of the bayonet coupling mechanism, a first end formed of any one of the connecting end portions of the core and the inner peripheral edge portion of the flange facing each other in the radial direction. One engaging convex portion or a plurality of circumferentially spaced intervals are formed on the surface, and the inner peripheral edge of the flange is fitted to the connecting end portion of the core on the second surface made of the other. In each case, the recesses for introducing the engagement protrusions and the engagement protrusions are extended in the circumferential direction so that one end thereof leads to the recesses and the core and the flange are relatively rotated in a predetermined direction. There may be a case where an engaging groove to be inserted is formed.
If the bayonet coupling mechanism is configured as described above, when the inner peripheral edge portion of the flange is fitted to the connecting end portion of the core, each engaging convex portion may be introduced into the recess. Simple. Further, the engaging convex portion, the concave portion, and the engaging concave groove constituting the bayonet coupling mechanism are formed on the surfaces of the connecting end portion of the core and the inner peripheral edge portion of the flange that face each other in the radial direction. Since there is no protruding portion, there is no possibility that the work of winding the wound object around the core or the work of unwinding the wound object will be hindered or caught on the wound object.
Preferably, two or more engaging convex portions are formed at equal intervals in the circumferential direction on the first surface (more preferably, a total of four at every 90 °), and the required number is set to correspond to these. The recess and the engagement groove are formed at a required portion of the second surface. Thus, if a bayonet connection mechanism is comprised by several sets of engaging convex parts, a recessed part, and an engaging concave groove, a flange will be more stably attached to a core and attachment / detachment operation will also become smooth.

In the case where the bayonet coupling mechanism of the first flanged core according to the present invention is configured as described above, as the stopper locking mechanism, a location adjacent to the rear end in the insertion direction of at least one engaging convex portion on the first surface The second engaging portion is snap-engaged with each first engaging portion from the circumferential direction when the engaging convex portion is inserted into the engaging concave groove on the second surface. A locking portion may be formed.
When the stopper locking mechanism is in the above-described form, the first locking portion and the second locking portion are formed on the surfaces of the connecting end portion of the core and the inner peripheral edge portion of the flange that face each other in the radial direction. Since there is no portion protruding in the axial direction, there is no possibility of being caught by a wound object or the like.
More preferably, the stopper locking mechanism includes, in addition to the first locking portion and the second locking portion, a concave third locking portion formed in the insertion direction front end portion of the engaging convex portion, A convex fourth locking portion formed at the back of the engaging groove so as to snap-engage with the third locking portion from the circumferential direction when the mating convex portion is inserted into the engaging groove. Consists of. According to the stopper locking mechanism comprising these two sets, a total of four locking portions, it is possible to finely adjust the force required for snap engagement and disengagement, as well as the holding force and operability of snap engagement. It becomes possible.

Next, a second flanged core according to the present invention includes a cylindrical core and a pair of ring-shaped flanges that are detachably attached to both ends of the core. There is provided a connection end portion whose outer peripheral portion is notched so as to be fitted to the inner peripheral edge portion of the flange, and it extends in the axial direction on one of the connection end portion of the core and the inner peripheral edge portion of the flange. One or more locking claw portions having a locking projection at the tip are formed or spaced apart in the circumferential direction. On the other hand, each of the inner peripheral edge portions of the flange is fitted to the connecting end portion of the core. A locking projection that snap-engages with the locking claw is formed, and the locking claw and the locking projection are shifted and engaged in the circumferential direction by relatively rotating the core and the flange in a predetermined direction. So that the connection end of the core A space for escaping the locking projection or the locking claw portion is provided in a portion adjacent to the claw portion or the locking projection, and further, the inner peripheral edge of the flange is provided at the connecting end portion of the core and the inner peripheral edge portion of the flange. By engaging the core and the flange relative to each other in the direction in which the engagement between the locking claw and the locking projection is released while the portion is engaged with the connecting end of the core. A stopper locking mechanism that disengages is provided.
In the second flanged core, when the inner peripheral edge of the flange is fitted to the connecting end of the core, each locking claw and the locking projection are snap-engaged accordingly. The stopper locking mechanism is engaged, and the flange is connected to the core. On the other hand, if the core and the flange are rotated relative to each other in the disengagement direction, the stopper locking mechanism is disengaged, and then the locking projection is released from the locking claw, so the inner peripheral edge of the flange is connected to the core. Can be removed from the end. Further, in the case of the flanged core, the flange mounting structure is constituted by a locking claw, a locking projection, and a stopper locking mechanism. In addition, there is no possibility of generating waste with the attachment / detachment of the flange as in the attachment structure by screw connection.
Therefore, according to the second flanged core of the present invention, it is possible to quickly attach and detach the flange to both ends of the core by an extremely simple operation, and at the time of winding the wound object around the core. Therefore, it can be suitably used as a winding core for a cover tape, for example.

In the second flanged core according to the present invention, as a stopper locking mechanism, on the first surface consisting of either one of the radially connecting surfaces of the connecting end of the core and the inner peripheral edge of the flange, One convex first locking portion or a plurality of circumferentially spaced first locking portions are formed, and the locking claw portion and the locking convex portion are snap-engaged on the second surface made of the other one. A concave groove-like second locking portion extending in the axial direction is formed so that each first locking portion is inserted when the first locking portion is formed, and the first locking portion includes a locking claw portion and a locking convex portion. In some cases, the core and the flange are relatively rotated in a direction in which the engagement with the second engagement portion is disengaged, thereby having a height that can be removed from the second locking portion.
When the stopper locking mechanism is in the above-described form, the structure can be simplified.

In the second flanged core according to the present invention, one or more locking claw portions are formed on the connecting end portion of the core at intervals in the circumferential direction, and each locking claw portion is formed from the edge of the core. A leg body configured to be elastically deformable by a portion between two cut slits, and a locking protrusion formed radially outward at the tip of the leg body; The locking convex part may be formed in the location corresponding to each locking claw part in the end surface of the inner peripheral edge of the flange.
According to said aspect, since the latching nail | claw part is comprised by a part of connection end part of a core, and does not protrude from the part, there is no possibility of being caught by a to-be-wrapped thing.

Further, in the second flanged core according to the present invention, one or more locking claw portions are formed on the inner peripheral edge portion of the flange at intervals in the circumferential direction, and each locking claw portion is formed inside the flange. A leg that is configured to be elastically deformable by a portion between two parallel slits cut from the peripheral edge and bent in a substantially U shape toward the outside in the axial direction, and a diameter at the tip of the leg And a protrusion formed on the outer peripheral surface of the connecting end portion of the core, and a recess is provided at a position corresponding to each engaging claw portion on the outer peripheral surface of the connecting end portion of the core. May be formed.
In the above aspect, the locking claw is formed on the inner peripheral edge of the flange, and the locking projection is also provided in the recess formed on the outer peripheral surface of the connecting end of the core. There is no possibility that these parts will be caught by the wound object or the like.

A third flanged core according to the present invention includes a cylindrical core and a pair of ring-shaped flanges that are detachably attached to both ends of the core. A connection end portion whose outer peripheral portion is notched so as to be fitted to the peripheral edge portion is provided, and extends in the axial direction at either one of the connection end portion of the core and the inner peripheral edge portion of the flange, and is connected to the tip end. One or more locking claw portions having locking protrusions are formed at intervals in the circumferential direction. On the other side, when the inner peripheral edge portion of the flange is fitted to the connecting end portion of the core, A locking projection that snap-engages is formed, and the locking projection and the locking projection of the locking claw have a cross-sectional shape that allows the engagement to be released by pulling the core and the flange in the axial direction. It is what.
In the third flanged core, when the inner peripheral edge of the flange is fitted to the connecting end of the core, the locking claw and the locking projection are snap-engaged accordingly, It will be in the state connected with the core. On the other hand, when the core and the flange are pulled in the axial direction, the locking projection is removed from each locking claw, so that the inner peripheral edge of the flange can be removed from the connecting end of the core. Further, in the case of the above-described winding core, since the flange mounting structure is configured by the locking claw portion and the locking convex portion, it is not necessary to form anything particularly on the inner peripheral surface of the core, and by screw bonding There is no possibility of generating waste with the attachment / detachment of the flange as in the mounting structure.
Therefore, according to the third flanged core of the present invention, it is possible to quickly attach and detach the flanges to both ends of the core by an extremely simple operation even though the flange mounting structure is simple. In addition, since workability and non-dusting properties at the time of winding the wound object around the core are not impaired, it can be suitably used as a core for a cover tape, for example.

In the third flanged core according to the present invention, the cross-sectional shape of the locking projection and the locking projection of the locking claw has, for example, two inclined surfaces inclined in opposite directions with respect to the axial direction. It has a substantially triangular shape or a substantially trapezoidal shape. If the cross-sectional shapes of the locking projections and the locking projections of the locking claw are as described above, the above-described extremely simple snap engagement operation and engagement release operation are reliably performed.
More preferably, the inclination angle of the inclined surface that is in contact with the other of the two inclined surfaces constituting the engaging protrusion and the engaging convex portion of the engaging claw portion is snapped to the other inclined surface. It is made larger than the inclination angle. If the angle of inclination of the two inclined surfaces is set as described above, the force required to snap-engage each locking claw and locking projection will be relatively small, and operability during flange mounting will be reduced. On the other hand, since the force required for disengaging the engagement becomes relatively large, there is less possibility that the flange is inadvertently detached.

In the third flanged core according to the present invention, one or more locking claw portions are formed on the connecting end portion of the core at intervals in the circumferential direction, and each locking claw portion is formed from the end edge of the core. A leg body configured to be elastically deformable by a portion between two cut slits, and a locking protrusion formed radially outward at the tip of the leg body; The locking convex part may be formed in the location corresponding to each engaging claw part in the end surface of the inner peripheral edge of the flange.
According to said aspect, since the latching nail | claw part is comprised by a part of connection end part of a core, and does not protrude from the part, there is no possibility of being caught by a to-be-wrapped thing.

Further, in the third flanged core according to the present invention, one or more locking claw portions are formed on the inner peripheral edge portion of the flange at intervals in the circumferential direction, and each locking claw portion is formed inside the flange. A leg that is configured to be elastically deformable by a portion between two parallel slits cut from the peripheral edge and bent in a substantially U shape toward the outside in the axial direction, and a diameter at the tip of the leg And a protrusion formed on the outer peripheral surface of the connecting end portion of the core, and a recess is formed at a position corresponding to each engaging claw portion on the outer peripheral surface of the connecting end portion of the core. May be formed.
In the above aspect, the locking claw is formed on the inner peripheral edge of the flange, and the locking projection is also provided in the recess formed on the outer peripheral surface of the connecting end of the core. There is no possibility that these parts will be caught by the wound object or the like.

BRIEF DESCRIPTION OF THE DRAWINGS It is the front view which shows 1st Embodiment of this invention and cut off a part of winding core with a flange. It is a side view of the core with a flange of a 1st embodiment. In the core with a flange of 1st Embodiment, it is a perspective view of the state which isolate | separated one flange from the core. It is a perspective view which expands and shows a part of connecting end part of a core in the core with a flange of 1st Embodiment. FIG. 5 is an enlarged perspective view showing another part of the connecting end portion of the core in the flanged core of the first embodiment. It is a perspective view which expands and shows a part of inner peripheral part of a flange in the core with a flange of 1st Embodiment. In the flanged core of the first embodiment, the state of the bayonet connecting mechanism before connection and the stopper locking mechanism before engagement are shown, (a) is a partially enlarged plan view, (b) is a partially enlarged plan view. It is a partial expanded side view. The flanged core of the first embodiment shows the state of the bayonet coupling mechanism at the time of coupling and the stopper locking mechanism at the time of engagement, (a) is a partially enlarged plan view, (b) is It is a partial expanded side view. The 2nd Embodiment of this invention is shown, Comprising: It is a perspective view of the core with a flange of the state which isolate | separated one flange from the core. In the core with a flange of 2nd Embodiment, it is a perspective view which expands and shows a part of connection end part of a core. In the winding core with a flange of 2nd Embodiment, it is a perspective view which expands and shows a part of inner peripheral part of a flange. The flanged core of 2nd Embodiment shows the initial process at the time of attaching a flange to a core, (a) is a partial enlarged plan view, (b) is a partial enlarged side view, (c ) Is a partially enlarged vertical sectional view. The flanged core of 2nd Embodiment shows the state which attached the flange to the core, (a) is a partial enlarged plan view, (b) is a partial enlarged side view, (c) is a partial enlarged view. It is a vertical sectional view. The flanged core of 2nd Embodiment shows the one process at the time of removing a flange from a core, Comprising: (a) is a partial enlarged plan view, (b) is a partial enlarged side view. The 3rd Embodiment of this invention is shown, Comprising: It is a perspective view of the core with a flange of the state which isolate | separated one flange from the core. In the core with a flange of 3rd Embodiment, it is a perspective view which expands and shows a part of connection end part of a core. In the winding core with a flange of 3rd Embodiment, a part of inner peripheral part of a flange is expanded and shown, Comprising: (a) is a perspective view, (b) is a vertical sectional view. The flanged core of the third embodiment shows an initial process when attaching the flange to the core, wherein (a) is a partially enlarged plan view, (b) is a partially enlarged side view, and (c) is a partially enlarged side view. It is a partial expanded vertical sectional view. In the core with a flange of 3rd Embodiment, it shows the state which attached the flange to the core, (a) is a partial enlarged plan view, (b) is a partial enlarged side view, (c) is a partial enlarged view. It is a vertical sectional view. In the core with a flange of 3rd Embodiment, the one process at the time of removing a flange from a core is shown, Comprising: (a) is a partial enlarged plan view, (b) is a partial enlarged side view. FIG. 9 is a perspective view of a flanged core in a state in which one flange is separated from a core according to a fourth embodiment of the present invention. It is a perspective view which expands and shows a part of connecting end part of a core in the core with a flange of 4th Embodiment. In the winding core with a flange of 4th Embodiment, it is a perspective view which expands and shows a part of inner peripheral part of a flange. It is a partial expanded vertical sectional view which shows the initial stage process at the time of attaching a flange to a core in the core with a flange of 4th Embodiment. In the winding core with a flange of 4th Embodiment, it is a partial expansion vertical sectional view which shows the state which attached the flange to the core. 9 shows a fifth embodiment of the present invention, and is a perspective view of a flanged core with one flange separated from a core. FIG. It is a perspective view which expands and shows a part of connecting end part of a core in the core with a flange of 5th Embodiment. In the core with a flange of 5th Embodiment, it is a perspective view which expands and shows a part of inner peripheral part of a flange. It is a partial expanded vertical sectional view which shows the initial stage process at the time of attaching a flange to a core in the core with a flange of 5th Embodiment. It is a partial expanded vertical sectional view which shows the state which attached the flange to the core in the core with a flange of 5th Embodiment.

1 to 8 show a first embodiment of the present invention.
The flanged core (1A) of this embodiment includes a cylindrical core (2) and a pair of ring-shaped flanges (3) that are detachably attached to both ends of the core (2).

The core (2) is made of resin or metal. As the resin material constituting the core (2), for example, ABS resin, polyethylene resin, polypropylene resin or polystyrene resin is used, and as the metal material, for example, aluminum is used.
The inner peripheral surface of the core (2) is a cylindrical surface, and no irregularities are provided.
At both ends of the core (2), there are provided connection end portions (21) whose outer peripheral portions are cut out in a substantially L-shaped cross section so as to be fitted to the inner peripheral edge portion (31) of the flange (3). Yes.
The width in the axial direction of the connection end (21) is substantially equal to the thickness of the inner peripheral edge of the flange (3), and the end surface of the connection edge (21) of the core (2) and the flange ( The axially outer surface of the inner peripheral edge (31) of 3) is substantially flush (see FIG. 1).
The outer diameter of the connecting end (21) of the core is slightly smaller than the inner diameter of the flange (3). In addition, the outer diameter of the intermediate portion (22) of the core between the connection edge portions (21) is slightly larger than the inner diameter of the flange (3), and each of the connection end portions (21) and The axially inner side surface of the inner peripheral edge portion (31) of the flange (3) is received by the step between the intermediate portion (22).

The flange (3) is also formed of the same resin or metal as the core (2).
The inner peripheral contour and the outer peripheral contour of the flange (3) are each circular. However, the outer peripheral contour of the flange (3) may be other than a circle, for example, a polygon.
The axial inner surface of the flange (3) is a flat surface. On the other hand, on the outer side surface in the axial direction of the flange (3), an intermediate portion excluding the inner peripheral edge portion and the outer peripheral edge portion is recessed by a predetermined thickness, and a plurality of reinforcements extending radially in the intermediate portion. Ribs (32) are formed at equal intervals in the circumferential direction.

  The core (2) and the flange (3) are rotated relative to each other in a predetermined direction with these portions (21) and (31) fitted to the connecting end (21) of the core and the inner peripheral edge (31) of the flange. The bayonet coupling mechanism that can couple the two by performing an operation, and the core (2) and the flange (3) are snap-engaged as the core (2) and the flange (3) are relatively rotated in a predetermined direction. A stopper locking mechanism is provided that is disengaged by relatively rotating (3) in the connection release direction.

The bayonet coupling mechanism has the following configuration. That is, the first surface formed by the end face of the inner peripheral edge (31), ie, the face facing the connecting end (21) of the core (2) in the radial direction in the inner peripheral edge (31) of the flange (3). In (31a), four engaging protrusions (33) are formed at equal intervals in the circumferential direction. Further, the flange is formed on the second end surface (21a) formed of the outer peripheral surface of the connection end portion (21), ie, the surface facing the inner peripheral edge portion (31) of the flange at the connection end portion (21) of the core in the radial direction. A recess (23) for introducing each engaging projection (33) when the inner peripheral edge (31) of the core is fitted to the connecting end (21) of the core, and one end in the recess (23) An engaging groove (24) into which each engaging protrusion (33) is inserted as the core (2) and the flange (3) rotate relative to each other in a predetermined direction so as to extend in the circumferential direction. , Four are formed at equal intervals in the circumferential direction.
The engaging convex part (33) is formed in the shape of a bowl having a substantially square cross section extending in the circumferential direction at the axially inner portion of the first surface (31a).
The recess (23) extends over the entire width of the second surface (21a) and has a length sufficiently larger than the length of the engaging projection (33), and one end side of the recess (23) is the second surface. It is inclined gently toward (21a).
The engaging groove (24) is formed on the second surface (21a) so that one end thereof communicates with the axially inner portion on the other end side of the recess (23). The length, width and depth of the engaging groove (24) are substantially equal to the length, width and height of the engaging protrusion (33), respectively. Further, the width of the engaging groove (24) is about half of the width of the second surface (21a).

As the stopper locking mechanism, the first locking portion (34) is formed at a location adjacent to the rear end in the insertion direction of the two engaging convex portions (33) at the diametrically symmetrical positions on the first surface (31a). In addition, when the engaging convex portion (33) is inserted into the engaging concave groove (24) at a required position of the second surface (21a), the first engaging portion (34) and the circumferential direction A second locking portion (25) that is snap-engaged is formed.
The first locking portion (34) includes a hook-shaped base portion (34a) having a substantially rectangular cross section extending in the axial direction over substantially the entire width of the first surface (31a), and the front of the protruding end surface of the hook-shaped base portion (34a) in the insertion direction. It is comprised with the protrusion part (34b) of the cross-sectional substantially semicircle protruded from the edge part.
The 2nd latching | locking part (25) is formed in the location adjacent to the opening end of the engagement ditch | groove (24) in a recess (23), and the hook-shaped base (34a) of a 1st latching | locking part (34). ) On the side of the projecting end face of the base-like base (25a) near the opening end of the engaging groove (24). And a recess (25b) into which the protruding portion (34b) of the first locking portion (34) is fitted.
In this embodiment, as the stopper locking mechanism, in addition to the first locking portion (34) and the second locking portion (25), the front end portion in the insertion direction of each engagement convex portion (33) is further provided. In addition, a concave third locking portion (35) is formed, and when the engaging convex portion (33) is inserted into the engaging concave groove (24), The convex 4th latching | locking part (26) snap-engaged from the direction is formed in the back | inner part of an engagement ditch | groove (24).
The third locking portion (35) has a substantially semicircular cross section, and is formed so as to cross the engaging convex portion (33) in the width direction. The fourth locking part (26) has a substantially semicircular cross-sectional shape that fits with the third locking part (35) and spans the entire width of the engaging groove (24). It extends in the axial direction.

In the flanged core (1A), the flange (3) is attached to both ends of the core (2) as follows.
That is, first, the inner peripheral edge (31) of the flange (3) is fitted to the connection end (21) of the core (2). At this time, as shown in FIG. 7, the four engaging projections (33) of the inner peripheral edge (31) of the flange are respectively introduced into the four recesses (23) of the connecting end (21) of the core. Align both as shown. In the alignment, any combination of the engaging convex portion (33) and the concave portion (23) can be used regardless of the presence or absence of the stopper locking mechanism (34) (25) (35) (26). Good.
Next, when the core (2) and the flange (3) are rotated relative to each other in a predetermined direction, the respective engaging convex portions (33) are inserted into the engaging concave grooves (24), and both (2) (3) Are forced to rotate relative to each other, the first locking portion (34), the second locking portion (25), the third locking portion (35), and the fourth locking portion (26) are respectively moved from the circumferential direction. Snap engagement (see FIG. 8). Thus, the flange (3) is attached to each end of the core (2).
On the other hand, when removing the flange (3) from both ends of the core (2), the operation opposite to the above may be performed. That is, when the core (2) and the flange (3) are forcibly rotated relative to each other in the disconnection direction, the first locking portion (34) and the second locking portion (25) constituting the stopper locking mechanism. And the engagement between the third locking part (35) and the fourth locking part (26) is released, and the engaging convex part (33) comes out of the engaging groove (24) and is recessed (23). In this state, the core (2) and the flange (3) are pulled in the axial direction to remove the inner peripheral edge (31) of the flange from the connecting end (21) of the core.
As described above, according to the flanged core (1A) of this embodiment, it is possible to quickly and surely attach and detach the flange (3) to and from both ends of the core (2) by an extremely simple operation. is there.
Further, in the case of the core (1A) of this embodiment, the flange mounting structure has the above-described bayonet coupling mechanisms (33) (23) (24) and stopper locking mechanisms (34) (25) (35) (26). ), It is not necessary to form a female screw or the like on the inner peripheral surface of the core (2), and there is no portion protruding in the axial direction, so that the wound object is wound around the core (2). There is no possibility of hindering the work, and it will not be caught by the wound object, and there is no possibility of generating debris with the attachment and detachment of the flange (3) as in the mounting structure by screw connection.

9 to 14 show a second embodiment of the present invention.
The flanged core (1B) of this embodiment also includes a cylindrical core (2) and a pair of ring-shaped flanges (3) that are detachably attached to both ends of the core (2). Since the basic configuration of the core (2) and the flange (3) is the same as that of the first embodiment, detailed description thereof is omitted.

  Four engaging claws (27) are formed at equal intervals in the circumferential direction at the connection end (21) of the core (2). Each locking claw portion (27) is configured to be elastically deformable by a portion between two parallel slits cut inward in the axial direction from the end edge of the connection end portion (2). It has a leg (27a) and a locking projection (27b) formed radially outward at the tip of the leg (27a). The locking projection (27b) has an inclined surface extending obliquely from the tip of the leg (27a) radially outward and a vertical surface extending radially inward from the edge of the inclined surface. It is triangular. Further, the locking protrusion (27b) has such a height that it does not protrude radially outward from the connection end (21), and there is no possibility of being caught by a wound object or the like.

  On the other hand, as the same portion (31) is fitted into the connecting end portion (21) of the core, the inner peripheral edge portion (31) of the flange (3) is snap-engaged with each locking claw portion (27). Four locking projections (36) are formed at equal intervals in the circumferential direction. Each locking projection (36) has an inclined surface inclined in the opposite direction so as to be in contact with the inclined surface of the locking protrusion (27b), and a vertical surface extending radially outward from the edge of the inclined surface. The cross section has a substantially triangular shape, and is formed in the axially inner portion of the end face (31a) of the inner peripheral edge (31) of the flange.

Further, by relatively rotating the core (2) and the flange (3) in a predetermined direction, the locking claw portion (27) and the locking projection (36) are displaced in the circumferential direction so that the engagement is released. A space (S) for allowing the locking projection (36) to escape is provided in a portion adjacent to the locking claw (27) in the connecting end (21) of the core (2).
In this embodiment, the space (S) is formed by cutting out a portion of the connecting end portion (21) of the core adjacent to the locking claw portion (27) by a predetermined thickness from the outer peripheral surface. In addition, it is also possible to form a space (S) by excising the said part over the whole thickness.

Further, the core (2) and the flange are engaged with the connecting end (21) of the core and the inner peripheral edge (31) of the flange in the circumferential direction as they are fitted together. There is provided a stopper locking mechanism that is disengaged by relatively rotating (3) in the direction in which the engagement between the locking claw (27) and the locking projection (36) is released.
In this embodiment, the stopper locking mechanism includes a surface facing the connecting end (21) of the core in the inner peripheral edge (31) of the flange in the radial direction, that is, an end edge surface of the inner peripheral edge (31). Four convex first locking portions (37) are formed on the first surface (31a) at equal intervals in the circumferential direction, and the inner peripheral edge portion of the flange at the connecting end portion (21) of the core The locking claw portion (27) and the locking convex portion (36) snap to the surface facing the radial direction (31), that is, the second surface (21a) composed of the outer peripheral surface of the connection end portion (21). A concave groove-like second locking portion (28) extending in the axial direction is formed so that each first locking portion (37) is inserted when engaged.
The first locking portion (37) is formed of a substantially hemispherical projection, and the core (2) and the flange (3) are arranged in a direction in which the engagement between the locking claw portion (27) and the locking projection portion (36) is released. Is forcibly rotated relative to each other to have a height that can be removed from the second locking portion (28).
The second locking portion (28) is a groove having a V-shaped cross section extending in the axial direction over the entire width of the second surface (21a).

In the flanged core (1B), the flange (3) is attached to both ends of the core (2) as follows.
That is, as shown in FIG. 12, the locking claw part (27) and the locking projection part (36), and the first locking part (37) and the second locking part (28) come to corresponding positions, respectively. Thus, the inner peripheral edge (31) of the flange (3) is fitted into the connection end (21) of the core (2).
Then, as shown in FIG. 13, the locking projections (27b) and the locking projections (36) of the locking claws (27) are snap-engaged, and the first locking portions (37) are the first ones. 2 Inserted into the locking portion (28) to engage in the circumferential direction. Thus, the flange (3) is attached to each end of the core (2).
On the other hand, when removing the flange (3) from both ends of the core (2), first, the core (2) and the flange (3) are forcibly rotated relative to each other in the disengagement direction. Then, the first locking portion (37) is disengaged from the second locking portion (28), and then the locking projection (36) is moved to the position of the space (S) in the circumferential direction, The engagement between the claw portion (27) and the locking projection portion (36) is released (see FIG. 14). In this state, the core (2) and the flange (3) are pulled in the axial direction to remove the inner peripheral edge (31) of the flange from the connecting end (21) of the core.
As described above, with the flanged core (1B) of this embodiment, it is possible to quickly and reliably attach and detach the flange (3) to and from both ends of the core (2) by an extremely simple operation. .
Further, in the case of the core (1B) of this embodiment, the flange mounting structure is constituted by the above-described locking claw portion (27), the locking projection (36), and the stopper locking mechanism (37) (28). Therefore, it is not necessary to form a female screw or the like on the inner peripheral surface of the core (2), and there is no portion protruding in the axial direction. Therefore, for the work of winding the wound object around the core (2). There is no risk of hindrance, and it does not get caught on the object to be wound, and there is no possibility of generating dust with the attachment and detachment of the flange (3) as in the mounting structure by screw connection.

15 to 20 show a third embodiment of the present invention.
The flanged core (1C) of this embodiment is substantially the same as the flanged core (1B) of the second embodiment shown in FIGS. 9 to 14 except for the following points.
That is, in the flanged core (1C) of the third embodiment, four locking claws (38) are formed at equal intervals in the circumferential direction on the inner peripheral edge (31) of the flange (3). On the other hand, a recess (29) is provided at a location corresponding to each engaging claw portion (38) on the outer peripheral surface (21a) of the connecting end portion (21) of the core (2). The stop convex part (210) is formed.
Further, by relatively rotating the core (2) and the flange (3) in a predetermined direction, the locking claw portion (38) and the locking projection (210) are displaced in the circumferential direction so that the engagement is released. A space (S) is provided in the connecting end (21) of the core (2) adjacent to the locking projection (210) for releasing the locking claw (38).

  Each locking claw portion (38) is configured to be elastically deformable by a portion between two parallel slits cut from the inner peripheral edge to the outer peripheral edge of the flange (3), and is axially outward. A leg (38a) bent in a substantially U-shape toward the top, and a locking projection (38b) formed radially inward at the tip of the leg (38a). The locking projection (38b) has an inclined surface extending obliquely from the tip of the leg (38a) toward the axially outward direction and a vertical surface extending radially outward from the edge of the inclined surface. It is triangular.

The recess (29) is formed so as to continue to the recess (211) formed in the outer peripheral surface (21a) of the connecting end (21) of the core in order to form a space (S).
The locking projection (210) includes an inclined surface inclined in the opposite direction so as to be in contact with the inclined surface of the locking protrusion (38b), and a vertical surface extending radially inward from the edge of the inclined surface. The cross section has a substantially triangular shape, and is formed on the axially outer side portion of the recess (29).

In the case of the flanged core (1C), the flange (3) is attached to both ends of the core (2) as follows.
That is, as shown in FIG. 18, the locking claw portion (38) and the locking projection portion (210), and the first locking portion (37) and the second locking portion (28) come to corresponding positions. The inner peripheral edge portion (31) of the flange (3) is fitted into the connection end portion (21) of the core (2) while aligning as described above.
Then, as shown in FIG. 19, the locking projections (38b) and the locking projections (210) of the locking claws are snap-engaged, and the first locking portion (37) is the second locking. It is inserted into the part (28) and engaged in the circumferential direction. Thus, the flange (3) is attached to each end of the core (2).
On the other hand, when removing the flange (3) from both ends of the core (2), first, the core (2) and the flange (3) are forcibly rotated relative to each other in the disengagement direction. Then, the first locking portion (37) is disengaged from the second locking portion (28), and then the locking claw portion (38) is moved to the position of the space (S) in the circumferential direction, The engagement between the claw portion (38) and the locking convex portion (210) is released (see FIG. 20). In this state, the core (2) and the flange (3) are pulled in the axial direction to remove the inner peripheral edge (31) of the flange from the connecting end (21) of the core.
As described above, according to the flanged core (1C) of this embodiment, it is possible to quickly and surely attach and detach the flange (3) to both ends of the core (2) by an extremely simple operation. is there.
Further, in the case of the winding core (1C) of this embodiment, the flange mounting structure is constituted by the above-described locking claw portion (38), the locking convex portion (210), and the stopper locking mechanism (37) (28). Therefore, it is not necessary to form a female screw or the like on the inner peripheral surface of the core (2), and there is no portion protruding in the axial direction. Therefore, for the work of winding the wound object around the core (2). There is no risk of hindrance, and it does not get caught on the object to be wound, and there is no possibility of generating dust with the attachment and detachment of the flange (3) as in the mounting structure by screw connection.

21 to 25 show a fourth embodiment of the present invention.
The flanged core (1D) of this embodiment also includes a core (2) and a pair of flanges (3) that are detachably attached to both ends of the core (2). Since the basic configuration of the core (2) and the flange (3) is the same as that of the first embodiment, detailed description thereof is omitted.

  At the connection end (21) of the core (2), four locking claws (212) extending in the axial direction and having locking protrusions (212b) at the tip are formed at equal intervals in the circumferential direction. On the other hand, when the same portion (31) is fitted to the connecting end portion (21) of the core on the inner peripheral edge portion (31) of the flange (3), the latch is snap-engaged with each locking claw portion (212). A convex part (39) is formed. The locking projections (212b) and the locking projections (39) of the locking claw have a cross-sectional shape such that the engagement is released by pulling the core (2) and the flange (3) in the axial direction. Yes.

  Each locking claw portion (212) is a leg (212a) configured to be elastically deformable by a portion between two parallel slits cut inward in the axial direction from the end edge of the core (2). ) And a locking projection (212b) formed radially outward at the tip of the leg (212a). Further, the locking protrusion (212b) has a height that does not protrude from the outer peripheral surface (21a) of the connection end (21), and there is no possibility of being caught by a wound object or the like.

  Each latching convex part (39) is formed in the axial direction inner side part in the end surface (31a) of the inner peripheral part (31) of a flange.

The locking projection (212b) and the locking projection (39) of the locking claw have a substantially triangular cross section having two inclined surfaces (F1) and (F2) inclined in opposite directions with respect to the axial direction. It has been made.
In addition, the inclination angle of the inclined surface (F1) that comes into contact with the other of the two inclined surfaces constituting the engaging protrusion (212b) and the engaging convex portion (39) of the engaging claw portion is snap-engaged. The angle of inclination of the other inclined surface (F2) is larger. Therefore, since the force required to snap-engage the locking claw portion (212) and the locking projection portion (39) is relatively small, the operability when attaching the flange (3) is improved. Since the force required for disengaging the engagement is relatively large, there is little possibility that the flange (3) will be inadvertently detached.

In the case of the flanged core (1D), the flange (3) is attached to both ends of the core (2) as follows.
That is, as shown in FIG. 24, the alignment end portion (21) of the core (2) is aligned while the engagement claw portion (212) and the engagement projection portion (39) are positioned at corresponding positions. The inner peripheral edge portion (31) of the flange (3) is fitted into the flange.
Then, the locking projections (212b) and the locking projections (39) of each locking claw are snap-engaged (see FIG. 25), whereby the flange (3) is attached to the end of the core (2). It is done.
On the other hand, when removing the flange (3) from the end of the core (2), if the two (2) and (3) are pulled in the axial direction away from each other, the locking claw (212) and the locking projection (39) And the inner peripheral edge (31) of the flange may be removed from the connecting end (21) of the core.
As described above, according to the flanged core (1D) of the fourth embodiment, the flange mounting structure is simple and easy to manufacture, and at both ends of the core (2) by an extremely simple operation. The flange (3) can be quickly attached and detached, and further, there is an advantage that workability and non-dusting property at the time of winding the wound object around the core (2) are not impaired.

26 to 30 show a fifth embodiment of the present invention.
The flanged core (1E) of this embodiment is substantially the same as the flanged core (1D) of the fourth embodiment shown in FIGS. 20 to 25 except for the following points.
That is, in the flanged core (1E) of the fifth embodiment, four locking claws (310) are formed at equal intervals in the circumferential direction on the inner peripheral edge (31) of the flange (3). On the other hand, a recess (213) is formed at a location corresponding to each engaging claw portion (310) on the outer peripheral surface (21a) of the connection end portion (21) of the core (2), and the recess (213) A locking projection (214) is formed.

Each locking claw portion (310) is configured to be elastically deformable by a portion between two parallel slits cut from the inner peripheral edge of the flange (3) toward the outer peripheral edge, and is axially outward. A leg (310a) bent in a substantially U-shape toward the top, and a locking projection (310b) formed radially inward at the tip of the leg (310a).
Each latching convex part (214) is formed in the axial direction outer side part of a recess (213).

According to the flanged core (1E), the connecting end of the core (2) is aligned while the locking claw (310) and the locking projection (214) are positioned at corresponding positions. When the inner peripheral edge portion (31) of the flange (3) is fitted into the portion (21) (see FIG. 29), the locking projections (310b) and the locking convex portions (214) of the respective locking claws are formed. Snap engagement (see FIG. 30), thereby attaching the flange (3) to the end of the core (2).
Also, when removing the flange (3) from the end of the core (2), both the (2) and (3) are pulled in the axial direction, and the engagement between the locking claw (310) and the locking projection (214). After removing the connection, the inner peripheral edge (31) of the flange may be removed from the connecting end (21) of the core.
As described above, according to the flanged core (1E) of the fifth embodiment, the flange mounting structure is simple and easy to manufacture, and the flanges are provided at both ends of the core (2) by an extremely simple operation. (3) can be quickly attached and detached, and further, there is an advantage that workability and non-dusting property at the time of winding the wound object around the core (2) are not impaired.

(1A) (1B) (1C) (1D) (1E): Winding core with flange (2): Core (21): Connection end (21a): First surface (23): Recess (Bayonet coupling mechanism) Elements)
(24): engaging groove (element of bayonet coupling mechanism)
(25): Second locking portion (element of stopper locking mechanism)
(26): Fourth locking portion (element of stopper locking mechanism)
(27): Locking claw part (27a): Leg (27b): Locking protrusion (28): Second locking part (element of locking mechanism for stopper)
(29): Recess (210): Locking projection (212): Locking claw (212a): Leg (212b): Locking projection (213): Recess (214): Locking protrusion ( 3): Flange (31): Inner peripheral edge portion (31a): Second surface (33): Engaging convex portion (element of bayonet coupling mechanism)
(34): First locking portion (element of locking mechanism for stopper)
(35): Third locking portion (element of stopper locking mechanism)
(36): Locking convex portion (37): First locking portion (element of locking mechanism for stopper)
(38): Locking claw part (38a): Leg (38b): Locking protrusion (39): Locking protrusion (310): Locking claw part (310a): Leg (310b): Locking protrusion (S): Space (F1) (F2): Inclined surface (of locking projection and locking projection)

Claims (5)

A cylindrical core, and a pair of ring-shaped flanges detachably attached to both ends of the core,
At both ends of the core, there are provided connection end portions in which the outer peripheral portion is cut out so as to be fitted with the inner peripheral edge portion of the flange,
A bayonet coupling mechanism capable of coupling the core and the flange by performing an operation of relatively rotating the core and the flange in a predetermined direction in a state in which these portions are fitted to the connection end of the core and the inner peripheral edge of the flange; And a stopper locking mechanism that is snap-engaged with relative rotation of the flange in a predetermined direction, and is disengaged by relative rotation of the core and flange in the connection release direction. A flanged core with the following features:   As a bayonet coupling mechanism, one engaging convex portion or a circumferential direction spacing is formed on the first surface formed by one of the connecting end portions of the core and the inner peripheral edge portion of the flange facing each other in the radial direction. A plurality of recesses for introducing each engaging protrusion when the inner peripheral edge of the flange is fitted to the connecting end of the core on the second surface formed of the other, An engagement recess groove into which each engagement protrusion is inserted as the core and the flange relatively rotate in a predetermined direction is formed so that one end communicates with the recess. The flanged core according to claim 1.   As a stopper locking mechanism, a first locking portion is formed at a position adjacent to the rear end of the at least one engaging convex portion in the first surface in the insertion direction, and the engaging convex is formed on the second surface. 3. The flanged winding according to claim 2, wherein a second locking portion snap-engaged with each first locking portion from the circumferential direction when the portion is inserted into the engaging groove is formed. core. A cylindrical core, and a pair of ring-shaped flanges detachably attached to both ends of the core,
At both ends of the core, there are provided connection end portions in which the outer peripheral portion is cut out so as to be fitted with the inner peripheral edge portion of the flange,
One of the connecting end portion of the core and the inner peripheral edge portion of the flange is formed with one or more locking claw portions extending in the axial direction and having a locking projection at the tip, and spaced apart in the circumferential direction. On the other hand, as the inner peripheral edge of the flange is fitted to the connecting end of the core, a locking projection is formed that snap-engages with each locking claw.
In addition, by engaging the core and the flange relative to each other in a predetermined direction, the engaging claw portion or the engaging portion at the connecting end of the core is disengaged so that the engaging claw portion and the engaging convex portion are displaced in the circumferential direction. In the portion adjacent to the stop projection, a space for releasing the lock projection or lock pawl is provided,
Further, the inner peripheral edge of the flange is engaged with the connecting end of the core and the inner peripheral edge of the flange as the inner peripheral edge of the flange is fitted to the connecting end of the core. The flanged core is provided with a stopper locking mechanism that is disengaged by relative rotation in a direction in which the engagement with the locking projection is released. A cylindrical core, and a pair of ring-shaped flanges detachably attached to both ends of the core,
At both ends of the core, there are provided connection end portions in which the outer peripheral portion is cut out so as to be fitted with the inner peripheral edge portion of the flange,
One of the connecting end portion of the core and the inner peripheral edge portion of the flange is formed with one or more locking claw portions extending in the axial direction and having a locking projection at the tip, and spaced apart in the circumferential direction. On the other hand, when the inner peripheral edge of the flange is fitted to the connecting end of the core, a locking projection is formed that snap-engages with each locking claw.
The flanged core is characterized in that the locking projection and the locking projection of the locking claw have a cross-sectional shape such that the engagement is released by pulling the core and the flange in the axial direction.

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