JP7195528B2 - cap - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a cap fitted to a core tube together with a packaging sheet covering roll goods.

A conventional cap of this type has a cylindrical shape (see, for example, Patent Document 1).

Design Registration No. 1311061 ([Description of the article to the design], [Reference perspective view showing the state of use])

However, in the above-described conventional structure, it is difficult to collect the plurality of caps compactly before use, and they are randomly stored in the box. For this reason, problems such as the bulkiness requiring a large space for storage, etc., and the cap being deformed in the box during storage or transportation, making it difficult to fit into the core tube, do not occur. The development of a cap was required.

The invention of claim 1 made to solve the above problems is a cap that is fitted to the core tube of the roll product together with a packaging sheet that covers the roll product, and when the caps are overlapped, the inside of one of the caps A cap that is in a nesting state in which a part of the other cap is fitted , wherein the annular side wall is reduced in diameter toward the front in the fitting direction with respect to the core tube, and the annular side wall protrudes laterally from a plurality of positions in the circumferential direction of the annular side wall. and a plurality of protrusion receiving portions formed at a plurality of positions in the circumferential direction of the annular side wall and receiving the plurality of side protrusions in the nested state .

The invention of claim 2 is the cap according to claim 1 , wherein the protrusion receiving portion penetrates the annular side wall.

A third aspect of the invention is the second aspect, wherein a plurality of the protrusion receiving portions are arranged between the side protrusions, and the side protrusions penetrate the protrusion receiving portions in the nesting state. is the cap.

According to a fourth aspect of the present invention, the front end of the side protrusion in the fitting direction is provided with an inclined surface that slopes rearward in the fitting direction as the distance from the annular side wall increases. A cap according to any one of claims 1 to 3 .

When the caps of claim 1 are overlapped, one cap is in a nested state in which a part of the other cap is fitted inside the other cap, and the caps can be easily gathered compactly, saving space during storage and transportation, and reducing the number of caps. Deformation prevention is achieved.

In addition, in the cap according to claim 1 , the sheet is pressed against the inner surface of the end portion of the core tube by the plurality of side projections arranged at a plurality of positions in the circumferential direction, so that the sheet can be loosely accommodated between the side projections. Therefore, the operation of fitting the cap to the core tube can be easily performed. In addition, in the nesting state, the side protrusion of one cap is received in the protrusion receiving portion of the other cap between the caps, so that the caps are compactly gathered together.

Here, the protrusion receiving portion does not have to pass through the annular side wall, but if the protrusion receiving portion penetrates the annular side wall (invention of claim 2 ), the side protrusion can be used as the protrusion receiving portion. It can be received deeply and the caps can be packed together more compactly. In that case, the side projection may or may not pass through the projection receiving portion.

Further, if a plurality of protrusion receiving portions are arranged between the side protrusions as in the cap of claim 3 , the plurality of caps can be used even if the side protrusions are large enough to pass through the protrusion receiving portions. By sequentially shifting the phases in one direction and stacking them, a nesting state can be achieved in which the side protrusions are received over a plurality of protrusion receiving portions.

In the cap according to claim 4 , since the front end of the side protrusion in the fitting direction is provided with the inclined surface, the load on the seat when fitting the cap to the core tube is suppressed. In addition, when the side projection penetrates to the outside of the projection receiving portion, the amount of protrusion of the side projection to the outside of the projection receiving portion is suppressed by providing the inclined surface, and the nesting state is reduced. Compact.

The perspective view of the inner surface side of the cap of 1st Embodiment. Perspective view of the outer side of the cap Bottom view of cap top view of cap Partially broken perspective view of the cap in the nesting state Partially broken perspective view of the cap in the nesting state Perspective view of roll product with cap attached Perspective view of multiple caps before nesting Perspective view of multiple caps in a nested state Partially broken perspective view of a plurality of caps in a nested state The top view of the cap of 2nd Embodiment Side sectional view of a cap according to a modification

[First embodiment]
An embodiment of the cap 10 will be described below with reference to FIGS. 1 to 10. FIG. The cap 10 of this embodiment is, for example, an injection-molded product of resin, and has a thin plate structure as a whole as shown in FIG. That is, the cap 10 has a conical (tapered) annular side wall 11 whose small diameter end is closed by a bottom wall 13 and whose large diameter end is provided with an annular flange 12 . there is Also, the bottom wall 13 and the flange 12 are parallel.

As shown in FIG. 3, side projections 15 or projection receiving portions 20 are formed at positions dividing the cap 10 into equal parts M×N in the circumferential direction. Specifically, the side protrusions 15 are formed at N locations that divide the cap 10 into N equal parts (for example, 6 equal parts) in the circumferential direction, and the adjacent side protrusions 15 are divided into M equal parts (M -1) Protrusion receiving portions 20 are formed at ×N locations.

As shown in FIG. 2, the side protrusion 15 protrudes from the outer surface 11G of the annular side wall 11 and has a substantially triangular shape when viewed from the side. Specifically, the pair of boundary lines L3 between the pair of side surfaces 16 of the side projections 15 and the outer surface 11G of the annular side wall 11 is the first circular boundary line L1 between the outer surface 11G of the annular side wall 11 and the flange 12. , and a second circular boundary line L2 between the outer surface 11G of the annular side wall 11 and the bottom wall 13. A pair of side surfaces 16 of the side protrusions 15 has a shape obtained by slightly cutting the corners on the flange 12 side of a triangle with the boundary line L3 as the base, and the diagonal P1 with respect to the base is the flange 12 and the bottom. It is positioned slightly below the center between the walls 13 . In addition, one side other than the base of the triangle of the side surface 16 extends substantially perpendicular to the flange 12 at a position slightly shifted outward from the first circular boundary line L1, and the other side extends substantially perpendicular to the second circular boundary line. It extends obliquely outward from L2. Further, the pair of side surfaces 16 are symmetrically angled toward each other.

A fitting surface 17 is provided between the sides of the pair of side surfaces 16 on the side of the flange 12 from the diagonal P1, and between the sides of the pair of side surfaces 16 on the side of the bottom wall 13 from the diagonal P1. A ramp 18 is provided between them. Also, the diagonal P1 of the pair of side surfaces 16 is chamfered in an arc shape, and the fitting surface 17 and the inclined surface 18 are connected by an arc surface 19 .

As shown in FIG. 6, the side protrusion 15 has a hollow structure having an opening 15K on the inner surface 11N of the annular side wall 11. As shown in FIG. Further, as shown in FIG. 5, the back side inner surfaces 16N of the pair of side surfaces 16 of the side protrusion 15 are trapezoidal, and the upper sides thereof overlap. Furthermore, the rear inner surfaces 17N, 18N of the fitting surface 17 and the inclined surface 18 are triangular.

As shown in FIG. 1, the protrusion receiving portion 20 extends through the annular side wall 11 from inside to outside. The protrusion receiving portion 20 is slightly wider than the side protrusion 15 and extends from the flange 12 to the bottom wall 13 . An inner end surface 20B of the protrusion receiving portion 20 on the bottom wall 13 side is flush with the inner surface 13N of the bottom wall 13 . On the other hand, an inner end surface 20A of the protrusion receiving portion 20 on the flange 12 side is located in the middle of the flange 12 in the radial direction and is orthogonal to both front and back surfaces of the flange 12 . In addition, the interval between the inner end surfaces 20A of the protrusion receiving portions 20 arranged to face each other is wider than the interval between the fitting surfaces 17 of the protrusions 15 on both sides arranged to face each other.

As shown in FIG. 4, spacer projections 21 are provided on the inner surface 11N of the annular side wall 11 at lower portions between the adjacent projection receiving portions 20. As shown in FIG. As shown in FIG. 1, the spacer protrusion 21 has a rib structure orthogonal to the bottom wall 13 and the annular side wall 11, and includes a vertical surface 21A standing substantially vertically from the inner surface 13N of the bottom wall 13, the flange 12 and the bottom. It has a wall 13 and a parallel receiving surface 21B. Further, the receiving surface 21B of the spacer protrusion 21 is located closer to the bottom wall 13 than the diagonal P1 of the side protrusion 15 described above.

The description about the structure of the cap 10 of this embodiment is above. Next, the function and effect of this cap 10 will be described. A roll product 30 is shown in FIG. The roll product 30 has a product body such as a resin film 32 wound around a core tube 31, and is covered with a packaging sheet 33 and packed in a box when shipped from the factory. Specifically, the packaging sheet 33 is wrapped around the outer side of the roll product 30 so as to protrude from both end faces of the roll product 30 in a cylindrical shape. Then, the tubular protruding portions of the packaging sheet 33 are collected in the both end openings 31K inside the core tube 31 . In this state, the packaging sheet 33 and the cap 10 are fitted into the openings 31K on both ends of the core tube 31, and the packaging sheet 33 is sandwiched between the cap 10 and the core tube 31. As shown in FIG.

Here, since the cap 10 has a plurality of side protrusions 15 on the outer peripheral surface, the overlapped portion of the packaging sheet 33 is accommodated in the space between the side protrusions 15, which facilitates the fitting operation. . Also, even if the fitting between the cap 10 and the core tube 31 is tight, the core tube 31 is partially pushed by the side protrusions 15 and deformed. Moreover, since the inclined surface 18 is provided on the tip end side of the side projection 15 in the fitting direction, and the fitting surface 17 and the inclined surface 18 of the side projection 15 are connected by the arc surface 19, It is also possible to prevent the packaging sheet 33 from being caught on the side protrusions 15 and damaged. Also, it is possible to visually confirm whether or not the packaging sheet 33 is normally accommodated between the cap 10 and the inner surface of the core tube 31 through the protrusion receiving portion 20 .

The roll product 30 with the cap 10 attached is housed in a box (not shown). The movement of the cap 10 is restricted by the inner surface of the box or the cushioning material filled in the box, and the cap 10 is held in a state of being fitted to both ends of the roll product 30 .

By the way, in the manufacturing factory of the roll product 30, the packaging work is performed as part of the assembly line in the final process of the production line in which the roll product 30 is mass-produced, for example. For this purpose, a plurality of caps 10 are collectively transported to and stored in a factory for manufacturing roll products 30, and a plurality of fixed quantities of caps 10 are arranged on the production line.

In contrast, according to the structure of the cap 10 of the present embodiment, a plurality of caps 10 can be nested and compactly collected, so that space can be saved during storage and transportation. Specifically, according to the configuration of the cap 10 of the present embodiment, as shown in FIG. 8, the plurality of caps 10 are rotated 360°/(M×N) in the counterclockwise direction (clockwise direction is also possible). 5 and 6, the side protrusions 15 of the upper cap 10 overlap with the lower cap 10 between the caps 10 adjacent to each other in the vertical direction of the same figure. , and a portion of the upper cap 10 is received in the lower cap 10, resulting in a nesting state. As a result, a plurality of caps 10 can be easily assembled compactly as shown in FIG. 9, and space can be saved during storage and transportation as described above. In addition, since a plurality of caps 10 can be stored and transported in a grouped state, it is possible to prevent the deformation that occurs in conventional caps, which cannot be stored and are randomly stored in a box.

Further, since a plurality of protrusion receiving portions 20 are arranged between the side protrusions 15 in each cap 10, even if the side protrusions 15 are large enough to pass through the protrusion receiving portions 20, the above-described By sequentially stacking a plurality of caps 10 with a phase shift in one direction as described above, the side protrusions 15 can be received over the plurality of protrusion receiving portions 20 to achieve a nested state. As a result, the amount of lateral protrusion of the side protrusions 15 from the annular side wall 11 can be increased, the space between the side protrusions 15 can be widened, and the packaging sheet 33 can be easily accommodated therein.

Furthermore, by providing the side protrusion 15 with the inclined surface 18, as shown in FIG. Interference with the side wall 11 is suppressed. Thereby, a plurality of caps 10 can be collected compactly.

Further, as shown in FIG. 5, between the overlapping caps 10, a slight gap is formed between the inner end surface 20A of the protrusion receiving portion 20 and the fitting surface 17 of the side protrusion 15. As shown in FIG. Furthermore, the bottom wall 13 of the other cap 10 abuts against the receiving surface 21B of the spacer protrusion 21 of one cap 10, forming gaps between the flanges 12 and between the bottom walls 13 of both caps 10. be done. As a result, one cap 10 can be easily separated from the nested group of caps 10 . Moreover, since the caps 10 can be oriented in the same direction and separated one by one, the efficiency of the packaging work is improved.

Note that the above packaging operation may be performed by an automatic machine. In that case, according to the cap 10 of the present embodiment, the caps 10 can be arranged in the same direction and supplied to the automatic machine, so that the operation of the automatic machine becomes easier. Stabilize.

[Second embodiment]
The cap 10C of the present embodiment has a structure in which a bottom hole 13K is provided by circularly cutting the inside of the portion of the bottom wall 13 of the cap 10 of the first embodiment where the plurality of spacer projections 21 rise. ing. The cap 10C of this embodiment provides the same working effect as the first embodiment.

[Other embodiments]
(1) As shown in FIG. 7, the cap 10 of the above-described embodiment is fitted to the core tube 31 with such a degree of fitting that it is held in the fitted state. loose fitting (so-called loose fitting). In that case, for example, the cap may be held in a state in which it is fitted to the core tube by being packed in a box.

(2) The caps 10 and 10C of the above embodiments had a plurality of side projections 15 on the outer peripheral surface, but if the cap is fitted to the core tube of the roll product together with the packaging sheet and can be nested, If so, it may not have side protrusions. Specifically, like a cap 10A shown in FIG. 12(A), the cap 10 of the first embodiment may have a configuration in which the plurality of side projections 15 and the projection receiving portion 20 are eliminated.

(3) The annular side wall of the cap may not be tapered. For example, like the cap 10B shown in FIG. While forming the large diameter portion 11A, the bottom wall 13 side may be the small diameter portion 11B. In this case, when the caps 10B are placed on top of each other, the small diameter portion 11B of one cap 10B is fitted into the large diameter portion 11A of the other cap 10B to form a nesting state.

(4) The cap 10 of the above embodiment is fitted to the core tube 31 of the roll product 30 together with the packaging sheet 33. , the cap 10 of the first embodiment may be used. That is, the first embodiment is
"A plug to be fitted into an opening of a mating member, comprising an annular side wall having a reduced diameter forward in the fitting direction with respect to the opening, and lateral projections from a plurality of positions in the circumferential direction of the annular side wall. and a plurality of protrusion receiving portions formed at a plurality of positions in the circumferential direction of the annular side wall and receiving the plurality of side protrusions in the nested state, and the plugs are phased from each other. and the side protrusion of one plug is received in the protrusion receiving portion of the other plug."

Reference Signs List 10, 10A, 10B, 10C Cap 11 Annular side wall 12 Flange 15 Side projection 18 Inclined surface 20 Projection receiver 30 Roll product 31 Core tube 33 Packaging sheet

Claims (4)

A cap that is fitted to the core tube of the roll product together with the packaging sheet that covers the roll product, wherein when the caps are overlapped, a nested state is formed in which a part of the other cap is fitted inside the other cap . ,
an annular side wall decreasing in diameter forward in a fitting direction with respect to the core tube;
a plurality of side protrusions protruding laterally from a plurality of positions in the circumferential direction of the annular side wall;
A cap comprising a plurality of projection receiving portions formed at a plurality of positions in the circumferential direction of the annular side wall and receiving the plurality of side projections in the nested state . 2. The cap of claim 1 , wherein said protrusion receiver extends through said annular side wall . A plurality of the protrusion receiving portions are arranged between the side protrusions,
3. The cap according to claim 2, wherein said side protrusion penetrates said protrusion receiver in said nesting state . 4. The side projection according to any one of claims 1 to 3, wherein a front end in the fitting direction of the side protrusion is provided with an inclined surface that slopes rearward in the fitting direction as the distance from the annular side wall increases. A cap according to claim.

Images