JP2015058124A - Covered roller tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a labor and a time when attaching a covering material to a core roller, and lower a manufacturing cost, too.SOLUTION: A core roller 3 is constituted of a core roller 3 made of an expansible/contractible elastic material formed with one splitting part 3a for cutting the continuity in a circumferential direction thereof. A covering material 2 is disposed on an outer peripheral surface 3b of the core roller 3. An excess portion R is stopped to escape by a pinching pressure of both splitting end edges of the covering material 2, generated in the splitting part 3a by an elastic restoring force while drawing the excess portion R becoming the excess out of the covering material in tightly adhered state covering the core roller outer peripheral surface 3b into an inner space I of the core roller 3 through the splitting part 3a accompanying widening of the splitting part 3a in a core roller circumferential direction against the elastic restoring force of the core roller 3.

Description

  The present invention relates to a covering roller device in which a covering material covering the outer peripheral surface of a core roller is attached in close contact with the outer peripheral surface of a cylindrical core roller that is rotatably attached to a holder.

  This type of coating roller tool has various uses such as cleaning, cleaning, painting, stain removal, massage, etc. Also, the coating material covering the outer peripheral surface of the core roller is also used for that purpose. Depending on the type, there are various types such as a brush-like coating material whose surface is made of brushed fibers, a coating material whose surface is convex, or a coating material whose surface is an adhesive surface. Conventionally, in order to attach the covering material in close contact with the outer peripheral surface of the core roller in this type of covering roller device, the following mounting method has been adopted.

  The covering material is processed into a cylindrical body or bag-like body whose inner diameter is substantially the same as the outer diameter of the core roller, and the cylindrical core roller is press-fitted into the cylindrical or bag-shaped processing covering material. By doing so, the coating material is attached in close contact with the outer peripheral surface of the core roller.

  Or, a method of attaching the covering material to the outer peripheral surface of the core roller by adhering it by winding a sheet-shaped coating material around the outer peripheral surface of the core roller to which an adhesive or hook-and-loop fastener is applied. .

  Alternatively, the winding ends of the sheet-like covering material wound around the core roller are connected in a drawn state by a dedicated fastener such as a fastener, or the sheet-like covering material wound around the core roller is wound in a state of being wound by the dedicated fixing tool. A method of attaching the coating material in close contact with the outer peripheral surface of the core roller by fixing it to the roller.

  However, in the mounting method in which the cylindrical core roller is press-fitted into the covering material processed into a cylindrical shape or a bag shape, the press-fitting operation is difficult, and there is a problem that it takes time and effort to attach the covering material.

  On the other hand, an attachment method in which a sticking means is applied to the outer peripheral surface of the core roller, an attachment method in which the winding ends of the sheet-like coating material are connected by a dedicated fastener such as a fastener, or a sheet-like coating material is attached by a dedicated fixing tool. Although the attachment method of fixing in a wound state to the core roller makes it possible to attach the covering material relatively easily, the problem is that the production cost increases due to the need for dedicated incidental means such as sticking means, dedicated fasteners, and dedicated fixing tools. was there.

  In view of such a situation, a main problem of the present invention is to effectively solve the above-described problems by adopting a rational mounting configuration.

A first characteristic configuration of the present invention relates to a covering roller tool,
A covering roller tool in which a covering material that covers the outer peripheral surface of the core roller is attached in close contact with the outer peripheral surface of a cylindrical core roller that is rotatably attached to the holder,
The core roller is constituted by a core roller made of an elastic material capable of expansion / contraction deformation, in which one cleaving portion that cuts the continuity in the circumferential direction is formed,
The covering material is disposed on the outer peripheral surface of the core roller, and the cleaved surplus portion of the covering material that is excessive in the covering in a close contact state with respect to the outer surface of the core roller resists the elastic restoring force of the core roller. With the expansion in the circumferential direction of the core roller, the cleaved edges generated in the cleaved portion of the core roller by the elastic restoring force of the core roller in the state of being drawn into the inner space of the core roller through the cleaved portion The surplus portion is prevented from coming off by the pressure of the covering material.

  That is, according to the above configuration, when the covering material is disposed on the outer peripheral surface of the core roller, the surplus portion that is excessive in the covering in the close contact state with respect to the outer peripheral surface of the core roller is expanded in the cleaved portion. By opening and drawing into the inner space of the core roller through the cleaved portion, the covering material can be tightly adhered to the outer peripheral surface of the core roller, and the surplus portion of the covering material can be attached to the inner space of the core roller. It is possible to prevent the surplus portion of the covering material from hindering the use of the covering roller device.

  Furthermore, in such a state that the covering material is in close contact with the outer peripheral surface of the core roller, the covering material is cleaved at the cleaving portion by the elastic restoring force of the core roller generated by the expansion of the cleaving portion due to the pull-in of the surplus portion. By holding the pressure between the edges, the holding portion prevents the excess portion of the covering material from coming off, so that the covering material is kept in close contact with the outer peripheral surface of the core roller. It can be fixed to the outer peripheral surface.

  That is, according to the above configuration, it is possible to easily and easily attach the covering material to the outer peripheral surface of the core roller by simply pulling the surplus portion of the covering material into the inner space of the core roller through the cleaving portion, Thereby, the effort and time which attachment of a coating | covering material can require can be reduced effectively.

  In addition, according to the above configuration, since only one cleaving portion is provided on the core roller, no dedicated incidental means such as the above-described attaching means, dedicated fasteners, and dedicated fixing tools are required for the attachment of the covering material. The cost can be reduced, and the covering material can be fixed in close contact with the outer peripheral surface of the core roller so that the covering material relative to the core roller is caused by the slack of the covering material in the use of the covering roller tool. Sliding can be effectively prevented and the usability of the covering roller device can be enhanced.

The second feature configuration of the present invention specifies a preferred embodiment of the first feature configuration.
The cleaving edge of the cleaving portion of the core roller is formed in a sawtooth shape.

  In other words, according to the above configuration, when the covering material is sandwiched between the cleaved edges at the cleaved portion generated by the elastic restoring force of the core roller, each blade portion at the saw blade-shaped cleaved edge is pinched by the covering material. Thus, the excess portion of the covering material can be more reliably prevented from coming off at the cleaving portion.

  In addition, the core roller with the expansion of the cleaved portion can be achieved by using a core roller having a small elastic restoring force on the material surface and the structure surface of the core roller, so that the excess portion can be reliably prevented from coming off. The operation of pulling the surplus portion of the covering material into the inner space can be facilitated, whereby the attachment of the covering material to the outer peripheral surface of the core roller can be further facilitated.

The third feature configuration of the present invention specifies a preferred embodiment of the first or second feature configuration, and the feature is:
The covering material is characterized in that the pressed portion is elastically deformed in a constricted manner by the clamping pressure between the cleaved edges in the cleaved portion.

  In other words, according to the above configuration, in the sandwiching pressure of the covering material by the cleaving edges at the cleaving portion generated by the elastic restoring force of the core roller, the to-be-clamped portion in the covering material is elastically deformed in a constricted shape, thereby cleaving. It is possible to make the cleaved edge in the portion bite into the sandwiched pressure portion of the covering material, and thereby, the surplus portion of the covering material can be more reliably prevented from coming off at the cleaved portion.

  In addition, the core roller with the expansion of the cleaved portion can be achieved by using a core roller having a small elastic restoring force on the material surface and the structure surface of the core roller, so that the excess portion can be reliably prevented from coming off. The operation of pulling the surplus portion of the covering material into the inner space can be facilitated, whereby the attachment of the covering material to the outer peripheral surface of the core roller can be further facilitated.

The fourth feature configuration of the present invention specifies a preferred embodiment of the third feature configuration.
The covering material is an elastic body having a laminated structure including a contact functional layer positioned on the outermost side in a covering state on the core roller and a sponge cushion layer positioned on the inner side of the contact functional layer. It is in.

  In other words, according to the above configuration, the contact functional layer positioned on the outermost side in the covering material having a laminated structure is made suitable for the purpose such as a raised fiber layer for removing stains, and the contact functional layer is affected by the properties of the contact functional layer. First, due to the high compressibility of the sponge cushion layer located inside the contact function layer, it is possible to effectively bite the cleaving edge of the cleaving portion into the sandwiched pressure portion of the covering material. Thereby, the effect by the above-mentioned 3rd characteristic structure can be obtained more effectively.

The fifth characteristic configuration of the present invention specifies a preferred embodiment of the first to fourth characteristic configurations,
In the state where the sheet-shaped covering material is wound around the outer peripheral surface of the core roller, both ends of the sheet-shaped covering material are drawn into the inner space of the core roller through the cleaved portion as the surplus portion. is there.

  That is, according to the above configuration, since the covering material may be a simple sheet, the manufacturing cost can be reduced compared to processing the covering material into a cylindrical shape or a bag shape.

The sixth feature configuration of the present invention specifies a preferred embodiment of the first to fifth feature configurations,
A cap member that is rotatably connected to the holder is attached to the end portion of the core roller in a state in which the insertion portion formed therein is inserted into the end opening of the core roller.

  That is, according to the above configuration, the core roller can be supported and retained from the inner side by the fitting portion of the cap member fitted into the end opening of the core roller. It is possible to effectively prevent the core roller from being deformed by distortion.

The seventh feature configuration of the present invention specifies a preferred embodiment of the sixth feature configuration.
The fitting portion of the cap member has a notch for receiving the surplus portion of the covering material drawn into the inner space of the core roller through the cleaving portion in the insertion operation of the insertion portion with respect to the end opening of the core roller. The point is that a part is formed.

  That is, according to the above configuration, the cap member insertion portion can be inserted deeply in the axial direction of the core roller by the receiving length of the covering material surplus portion by the notch portion formed in the cap member insertion portion. The length of the insertion part positioned inside the core roller can be increased to increase the support range of the insertion part with respect to the core roller. This can be more effectively prevented.

The eighth feature configuration of the present invention specifies a preferred embodiment of the seventh feature configuration.
The notch portion in the fitting portion of the cap member is inserted into the end opening of the core roller with the insertion operation of the fitting portion, and both side edges of the notch portion surround the surplus portion of the covering material around the core roller. It is the point which is set as the structure which receives the said surplus part of the said coating | covering material in the state clamped in a direction.

  That is, according to the above configuration, the notch portion of the fitting portion in the cap member presses the surplus portion of the covering material drawn into the inner space of the core roller in the circumferential direction of the core roller, thereby preventing the surplus portion from coming off. It can be made even stronger.

The ninth feature configuration of the present invention specifies a preferred embodiment of the first to eighth feature configurations,
The outer peripheral surface of the core roller is formed with a convex portion that acts to prevent the covering material attached to the outer peripheral surface of the core roller.

  In other words, according to the above-described configuration, by the action of preventing the protrusion from shifting, it is possible to effectively prevent the covering material from partially moving relative to the core roller due to the elastic deformation of the covering material when the covering roller tool is used. Thus, the usability of the covering roller device can be improved.

Use state diagram of covered roller tool Disassembled perspective view of covered roller device Explanatory drawing which shows how to attach the covering material and the cap member to the core roller Side sectional view showing the state of attachment of the covering material and the cap member to the core roller The expanded sectional view which shows the connection state of a cap member and a holder The top view which shows the core roller of the covering roller tool in another embodiment

  FIG. 1 shows a covering roller device 1 used for removing stains such as clothes, and the covering roller device 1 has a rectangular sheet shape provided with a raised fiber layer 2a for removing stains as a contact functional layer as shown in FIG. Covering material 2, cylindrical core roller 3 to which the covering material 2 is attached, a cap member 4 to be attached to the core roller 3, a holder 5 for rotatably supporting the core roller 3 via the cap member 4, the cap member 4 and the holding tool 5 includes a connecting shaft rod 6 used for connection to the shaft 5 and a shaft lid 7 that conceals the connecting shaft rod 6.

  The covering material 2 has a laminated structure of a brushed fiber layer 2a for removing stains and a sponge cushion layer 2b that are positioned on the outermost side in the state of covering the core roller 3, and the raised fiber layer 2a and the cushion layer 2b are Affix with adhesive or heat fusion.

  In addition, the rectangular sheet-shaped covering material 2 has a width dimension substantially equal to the length of the core roller 3 in the central axis direction, and the length in the winding direction of the core roller 3 is longer than the circumferential length of the core roller 3. As a result, a surplus portion R that becomes surplus in the covering in the state of close contact with the outer peripheral surface 3 b of the core roller 3 is generated at both end portions 2 c of the covering material 2.

  As shown in FIG. 2, the core roller 3 formed of a hard elastic material is formed with one cleaved portion 3 a that cuts off the continuity in the circumferential direction, and the core roller 3 in a state in which the cleaved portion 3 a is made flexible. In other words, the cleaving portion 3a can be elastically expanded in the circumferential direction of the core roller against the elastic restoring force of the core roller 3. Note that the cleaving edge 3c of the cleaving portion 3a is linear.

  As shown in FIG. 3, the covering material 2 is attached to the core roller 3 by drawing both ends 2c of the covering material 2 into the internal space I of the core roller 3 through the cleaving portion 3a as the surplus portion R. The material 2 is fixed in close contact with the core roller outer peripheral surface 3b.

  Specifically, the covering material 2 is arranged on the core roller outer peripheral surface 3b so that the cushion layer 2b is on the inner side and the covering material both end portions 2c are located on the outer side of the cleaving portion 3a, and both end portions of the covering material 2 are disposed. By pulling 2c into the internal space I of the core roller 3 through the cleaving portion 3a in a state accompanied by the expansion of the cleaving portion 3a, the coating material 2 is brought into close contact with the outer peripheral surface 3b of the core roller and the coating as the surplus portion R The material end 2 c is stored in the internal space I of the core roller 3.

  Then, by performing this drawing operation, the elasticity of the core roller 3 caused by the expansion of the cleaving portion 3a accompanying the drawing of the both ends 2c of the coating material in a state where the coating material 2 is brought into close contact with the outer peripheral surface 3b of the core roller. The covering material 2 is clamped and held between the cleaved edges 3c of the cleaving portion 3a with a restoring force, and the covering material both ends 2c (the surplus portion R) are prevented from coming off by this clamping pressure holding. The covering material 2 is fixed to the core roller outer peripheral surface 3b in a state in which the both ends 2c are kept from coming into close contact with the core roller outer peripheral surface 3b.

  The covering material 2 is attached to the core roller 3 in this way, but the covering material 2 can be fixed in close contact with the outer peripheral surface 3b of the core roller, so that the covering material 2 can be slackened when the covering roller tool 1 is used. The relative sliding of the covering material 2 with respect to the core roller 3 can be prevented.

  Further, since the covering material 2 includes the sponge cushion layer 2b, as shown in FIG. 4A, in the holding pressure of the covering material 2 by the cleaved edges 3c, the pinched portion 2e of the covering material 2 is held. Is deformed into a constricted shape so that the cleaved edge 3c bites into the pinched portion 2e, and as a result, an excess portion R drawn into the inner space I of the core roller 3 through the cleaved portion 3a. Secures and strengthens the stopper against both ends 2c of the covering material.

  In addition, the opening width of the cleaving portion 3a in a free state where the both ends 2c of the covering material 2 are not drawn in is such that the elastic restoring force is such that the cleaving edge 3c of the cleaving portion 3a can hold the covering material 2 between them. It is set to a width generated in the core roller 3 by the expansion of the cleaving portion 3a accompanying the drawing operation.

  Further, on the outer peripheral surface 3b of the core roller 3, a plurality of ridges 3d extending from one end to the other end in the central axis P direction are arranged at equal intervals in the circumferential direction. By causing the covering material 2 in close contact with 3b to be prevented from slipping, the covering material 2 partially moves relative to the core roller 3 due to elastic deformation of the covering material 2 when the covering roller device 1 is used. To prevent.

  As shown in FIGS. 2 and 3, the cap member 4 is composed of a disc-shaped lid portion 4a and a cylindrical fitting portion 4b fitted into the end opening 3e of the core roller 3, and the cap member 4 has its fitting portion 4b. Is attached to the core roller 3 by fitting it into the end opening 3e of the core roller 3 in the direction of the central axis P.

  Further, along with the attachment of the cap member 4 to the core roller 3, the core roller 3 is shaped by the insertion portion 4b inserted into the end opening 3e of the core roller 3 supporting the core roller 3 from the inner side, This prevents the core roller 3 from being deformed into distortion when the covering roller device 1 is used.

  The peripheral wall of the fitting portion 4b is provided with a notch 4c extending from the tip of the fitting portion 4b to the inner surface of the lid portion 4a, and is drawn into the inner space I of the core roller 3 as shown in FIG. The inner surface of the lid portion 4a of the cap member 4 is the end portion of the core roller 3 by performing the fitting operation of the fitting portion 4b so that the coated covering material front end portion 2c (the surplus portion R) is received by the notch portion 4c. The fitting portion 4b is fitted into the end opening 3e of the core roller 3 until it hits.

  The opening width in the circumferential direction of the notch portion 4c is such that the notch portion 4c receives the covering material tip portion 2c (the surplus portion R) in the fitting operation of the fitting portion 4b except for the tip portion 4d of the fitting portion 4b. Accordingly, both end edges of the notch portion 4c are set to a width that sandwiches the covering material tip 2c (the surplus portion R) in the circumferential direction of the core roller 3, and as shown in FIG. 4B, the covering material tip 2c ( The surplus portion R) is received in the notched portion 4c in a pinched state, thereby further ensuring the prevention of the covering material tip portion 2c from coming off.

  Further, with respect to the tip portion 4d of the fitting portion 4b, the outer peripheral diameter of the fitting portion 4b is made smaller toward the tip side, and the opening width of the notch portion 4c is made larger toward the tip side. In the initial stage of the fitting operation for fitting the fitting portion 4b into the end opening 3e, play is generated between the outer peripheral surface of the tip portion 4c and the inner peripheral surface of the core roller 3 in the fitting portion 4b, and the notch Play is also generated between both end edges of 4c and the coating material front end portion 2c (excess portion R), and fine position adjustment between the fitting portion 4b and the end opening 3e in the core roller 3, and a notch The fitting operation can be performed without requiring fine positional adjustment between 4c and the coating material front end portion 2c (excess portion R).

  In the subsequent insertion operation, the insertion portion 4b is guided to an appropriate position by the outer peripheral surface of the distal end portion 4d of the insertion portion 4b and the opening edge 4e of the distal end portion 4d of the notch portion 4c. The fitting operation of the fitting portion 4b with respect to the end opening 3e can be easily performed.

  Further, as shown in FIG. 5, the projection 4f provided at the center of the inner surface of the lid portion 4a is opened in the axial direction at the center of the outer surface of the lid portion 4a in a state of being drilled from the outer peripheral surface of the lid portion 4a. A shaft hole 4g is provided, and when the cap member 4 and the holder 5 are connected, the connecting shaft rod 6 is attached to the shaft hole 4g.

  As shown in FIG. 1, the holding tool 5 is a symmetrical Y-shaped tool including a columnar handle portion 5a and a mounting portion 5b having a bifurcated tip, and a bottom portion of the handle portion 5a. While making 5c planar, the area of the planar bottom 5c is increased to enable the holder 5 to stand on its own.

  As shown in FIG. 5, a recess 5d for housing the shaft lid 7 is provided at both ends of the mounting portion 5b, and a shaft hole 5e for inserting the connecting shaft rod 6 is provided at the bottom of the recess 5d.

  The cap member 4 and the holder 5 are connected after the covering material 2 and the cap member 4 are attached to the core roller 3, and the connecting shaft 6 is held with the shaft hole 4g of the cap member 4 as shown in FIG. The core roller 3 is rotatably attached to the holder 5 by being inserted into the shaft hole 5d of the tool 5, and then the shaft lid 7 is fitted into the recess 5d of the holder 5 so that the shaft hole 5e of the holder 5 is inserted. Cover.

  The detailed configuration of the covering roller device 1 is as described above. In this covering roller device 1, when attaching the covering material 2 to the core roller outer peripheral surface 3b, both end portions of the covering material 2 through the cleaving portion 3a of the core roller 3 are used. By simply pulling 2c (the surplus portion R) into the inner space I of the core roller 3, the covering material 2 can be attached to the outer peripheral surface 3b of the core roller in a tight contact state. Can be reduced.

[Another embodiment]
In the above-described embodiment, an example in which the brushed fiber layer 2a for removing stains is used as a contact functional layer of the covering material 2 is shown. However, the contact functional layer of the covering material 2 is not limited to this. It can be used for any purpose, such as for painting or massage. Depending on the application, the material and structure can be a contact functional layer with protrusions on the surface, or contact with a sticky surface. Any material such as a functional layer may be used.

  In the above-described embodiment, the covering material 2 has a two-layer structure including the raised fiber layer 2a and the cushion layer 2b. However, the present invention is not limited to this, and the covering material is substantially composed of only one layer of the contact function layer. It may have a single layer structure, or may have a laminated structure of three or more layers.

  In the above-described embodiment, the covering material 2 is in the form of a sheet. However, the covering material 2 is not limited to this, and the covering material 2 is covered with the core roller 3 through the cleaving portion 3a when the covering material 2 is in close contact with the outer peripheral surface 3b of the core roller. As long as the surplus part R that can be drawn into the inner space is generated, it may have any structure such as a cylindrical shape or a bag shape.

  As shown in FIG. 6, the cleaving edge 3 c of the cleaving portion 3 a is formed in a saw blade shape, whereby each of the cleaving edge 3 c in the saw-blade cleaving edge 3 c is sandwiched between the cleaving edges 3 c. The blade portion 3f may be engaged with the sandwiched pressure portion 2e of the covering material 2 so as to further secure the retaining portion 3a with respect to the surplus portion R of the covering material 2.

  The cleaved edge 3c of the cleaved portion 3a is formed in a saw blade shape only at the center of the cleaved edge 3c or only at the end of the cleaved edge 3c. It may be.

  In the above-described embodiment, an example in which a plurality of protruding ridges 3d are arranged side by side on the outer peripheral surface of the core roller as a protruding portion that functions to prevent the covering material 2 from being offset has been described. The structure can be variously changed.

  In addition, in the implementation of the present invention, the detailed shape structure such as the connection structure of the core roller 3 and the holder 5 and the shape structure of the holder 5 is not limited to the shape structure shown in the above-described embodiment, but various It can be changed.

  The covering roller device of the present invention can be applied to covering roller devices for various uses in various fields.

DESCRIPTION OF SYMBOLS 5 Holding tool 3 Core roller 3b Core roller outer peripheral surface 2 Coating material 1 Covering roller tool 3a Cleaving part R Surplus part I Inner space 3c of core roller Cleaving edge 2e Clamping part 2a Raised fiber layer (contact functional layer)
2b Cushion layer 2c Both end portions 4 of covering material Cap member 4b Insertion portion 3e End opening 4c of core roller Notch portion 3d Projection (convex portion)

Claims (9)

A covering roller tool in which a covering material that covers the outer peripheral surface of the core roller is attached in close contact with the outer peripheral surface of a cylindrical core roller that is rotatably attached to the holder,
The core roller is constituted by a core roller made of an elastic material capable of expansion / contraction deformation, in which one cleaving portion that cuts the continuity in the circumferential direction is formed,
The covering material is disposed on the outer peripheral surface of the core roller, and the cleaved surplus portion of the covering material that is excessive in the covering in a close contact state with respect to the outer surface of the core roller resists the elastic restoring force of the core roller. With the expansion in the circumferential direction of the core roller, the cleaved edges generated in the cleaved portion of the core roller by the elastic restoring force of the core roller in the state of being drawn into the inner space of the core roller through the cleaved portion A covering roller device in which the surplus portion is prevented from coming off by the pressure of the covering material.   The covering roller device according to claim 1, wherein the cleaving edge in the cleaving portion of the core roller is formed in a saw blade shape.   3. The covering roller device according to claim 1, wherein the covering material is an elastic body in which the pressed portion is elastically compressed and deformed in a constricted manner by the pressure between the cleaved edges in the cleaved portion.   The said covering material is made into the elastic body of the laminated structure provided with the contact functional layer located in the outermost side in the covering state to the said core roller, and the sponge cushion layer located inside the contact functional layer. Item 4. A coated roller device according to item 3.   The sheet-shaped covering material is wound around the outer peripheral surface of the core roller, and both end portions of the sheet-shaped covering material are drawn into the inner space of the core roller as the surplus portion through the cleaving portion. The covering roller tool of any one of 1-4.   The cap member that is rotatably connected to the holder is attached to the end portion of the core roller in a state where the insertion portion formed in the cap member is inserted into the end opening of the core roller. The covering roller device according to claim 1.   The fitting portion of the cap member has a notch for receiving the surplus portion of the covering material drawn into the inner space of the core roller through the cleaving portion in the insertion operation of the insertion portion with respect to the end opening of the core roller. The covering roller device according to claim 6, wherein a portion is formed.   The notch portion in the fitting portion of the cap member is inserted into the end opening of the core roller with the insertion operation of the fitting portion, and both side edges of the notch portion surround the surplus portion of the covering material around the core roller. 8. The covering roller device according to claim 7, wherein the covering roller device is configured to receive the surplus portion of the covering material in a state of being pinched in a direction.   The covering roller device according to any one of claims 1 to 8, wherein a convex portion is formed on the outer peripheral surface of the core roller so as to prevent the covering material attached to the outer peripheral surface of the core roller. .

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