JP3151356U - Paper cover for fiber drum - Google Patents

Abstract

Provided is a paper lid that can be securely attached to an upper opening without easily falling off from the upper opening of a fiber drum. A paper cover 20 is formed by attaching an annular body 23 having a constant neck length T1, which is suspended from the lower surface of a large-diameter disk body made of whole paper, and a small-diameter disk body 22 inside the annular body 23. Formed. Each of the annular body 23 and the small-diameter disk body 22 is attached to the lower surface thereof with its center corresponding to the center of the large-diameter disk body, and includes an outer peripheral side surface portion 24 and an inner peripheral side surface portion 25, respectively. It is said. [Selection] Figure 4

Description

  The present invention is a cylindrical fiber drum made of whole paper that can contain food, medicine, etc. inside, and is attached to the upper opening of the fiber drum so that the opening can be closed. It is related with the paper cover for fiber drums which consists of.

  Recently, a cylindrical container made of whole paper called a fiber drum has been used as a container for containing food, medicine, and the like. In other words, the fiber tram is made entirely of paper, so it can be recycled after use, and it does not require fumigation treatment at the time of import / export like a wooden container. Is considered good.

  There are various types of fiber drums composed of all-paper all-fiber, and one of them is the fiber shown in the following Patent Document 1 which has been conventionally formed and manufactured as shown in FIG. Proposing drums.

JP2002-307579

  As shown in FIG. 5A, the fiber drum 1 is formed by first processing a paper cylinder 4 provided with a ring-shaped portion 3 formed by bending the opening edge of the upper opening 2 outwardly. . Here, the paper cylinder 4 is formed by winding a roll of kraft paper around a cylindrical mold roll, and with respect to the ring-shaped part 3, the opening edge is pressed against the mold and heat-treated by external winding. It is formed.

  Next, a large number of cuts 6 are formed in the lower opening edge 5a of the lower opening 5 of the paper cylinder 4 (see FIG. 5B). And the peripheral piece 7 of the lower opening edge 5a formed by this notch 6 is bent at a substantially right angle to the inside of the paper cylinder 4, and the disc-shaped bottom upper plate is sandwiched between the bent peripheral pieces 7 from above and below. 8 and bottom lower plate 9 (each made of paperboard) are bonded and pressure-bonded (see FIG. 5C).

  Thus, as shown in FIG. 5 (D), a fiber drum 1 having a bottomed cylindrical shape having a ring-shaped portion 3 formed by bending the edge of the upper opening 2 of the paper cylinder 4 outwardly is manufactured. Thus, the upper opening 2 of the fiber drum 1 can be closed with a paper cover 10 for the fiber drum made of a disk made of whole paper.

  The paper cover 10 made of an overall disk shape has a diameter D2 of the upper opening 2 on the lower surface of the large-diameter disk body 11 having a diameter D1 substantially equal to the diameter of the upper opening 2 of the fiber drum 1 including the ring-shaped portion 3. A small-diameter disk body 12 having a diameter D2 substantially equivalent to the above is formed by concentrically sticking in a state where an adhesive is applied (see FIGS. 6 and 7).

  When the paper lid 10 thus formed closes the upper opening 2 of the paper cylinder 4 of the fiber drum 10, the outer peripheral edge of the large-diameter disk 11 is placed on the ring-shaped portion 3 as shown in FIG. The entire upper opening 2 is covered from above so that the small-diameter disk body 12 is fitted to the inner peripheral portion of the upper opening 2.

  In this way, the upper opening 2 is closed and the paper cover 10 is attached to the fiber drum 10, and in order to maintain this attached state, generally a metal tightening ring 13 as shown in FIG. Is going to be used. The diameter of the tightening ring 13 can be reduced by operating the tightening lever 14 in the direction of the arrow. With such a diameter reduction, the paper cover that is superimposed and placed as shown by the solid line from the two-dot chain line in FIG. The outer peripheral edge of the large-diameter disk body 10, the ring-shaped portion 3 of the fiber drum 1, and the outer periphery of the fiber drum 1 are in contact with each other, and these portions are tightened in a state of being surrounded from the outside. . For this reason, the tightening ring 13 positions the outer peripheral edge portion of the superposed large-diameter disk body 11 and the outer peripheral portion of the fiber drum 1 at the upper and lower positions in the reduced diameter state by the operation of the tightening lever 14. A U-shaped section that can be fitted in contact with each other.

  In this way, as shown in FIG. 8, the tightening ring 13 keeps the paper cover 10 attached to the upper opening 2 of the fiber drum 1, and the paper cover 10 keeps the closed state of the opening 2. Further, when the paper cover 10 is opened from the upper opening 2, the tightening lever 14 can be opened reversely to expand the diameter of the tightening ring 13 as shown by a two-dot chain line in FIG. 8. .

  By the way, as shown in FIG. 8, in the state in which the state where the paper cover 10 is attached to the upper opening 2 of the fiber drum 1 by the tightening ring 13 is maintained, even if the fiber drum 1 is being transported or transported. Of course, the paper lid 10 should not be easily detached from the upper opening 2 even when an external force is applied to the whole.

  However, conventionally, as shown in FIG. 9, a drop test was performed in which the fiber drum 1 in which the paper lid 10 was fastened to the upper opening 2 by the fastening ring 13 was dropped from a height of 1 m in a state of being inclined at 45 degrees. In this case, an irregular load in the direction of the arrow B is applied to the side of the drum 1 at the upper opening 2 of the fiber drum 1 due to the impact when it collides with the floor surface in the direction of the arrow A, and the paper lid 10 is tightened by the tightening ring 13. At the same time, a situation where the fiber drum 1 is detached from the upper opening 2 of the fiber drum 1 easily occurs.

  That is, such a phenomenon is based on the fact that an irregular impact load in the direction of arrow B is applied to the fiber drum 1 above the paper cylinder 4 of the fiber drum 1 as shown in FIG. The small-diameter disk body 12 and the inner periphery of the upper opening 2 are disengaged from each other. In particular, the inner peripheral portion of the upper opening 2 of the fiber drum 1 to which the paper lid 10 is fitted is curled outwardly by the ring-shaped portion 3 on the outer peripheral side. The contact area with the outer peripheral portion was small, and a phenomenon that the paper lid 10 was detached from the opening 2 occurred due to a slight impact. The applicant has been based on trial and error to develop a paper lid that does not cause such a phenomenon and that can take advantage of the fiber drum with a lid that is formed entirely of paper.

  Accordingly, an object of the present invention is to provide a paper lid that can be securely attached to the upper opening without easily falling off from the upper opening of the fiber drum.

  In order to achieve the above object, claim 1 of the present invention is a fiber drum having a ring-shaped portion formed by bending an upper opening edge of a paper cylindrical body outwardly wound, The upper opening can be closed, and the fiber drum paper cover is made of a whole paper disk. It has a diameter approximately equal to the diameter of the upper opening of the fiber drum including the ring-shaped part, and the outer periphery is ring-shaped. A large-diameter disk body made of a whole paper that is placed in correspondence with the upper part and covers the entire upper opening of the fiber drum so that the upper opening can be closed, and the center of the large-diameter disk body and its center In a state where the center is matched, it is concentrically attached to the lower surface of the large-diameter disk body, and has a certain neck length that is suspended from the lower surface of the large-diameter disk body to be attached. From the whole paper-made cylindrical shape with the outer peripheral side and inner peripheral side The outer peripheral edge of the large-diameter disk body is placed on the ring-shaped part of the upper opening of the fiber drum, and the entire upper surface of the fiber drum is covered with the large-diameter disk body to close the upper opening. In this state, an annular body that is inserted into the upper opening of the fiber drum and can be brought into contact with the outer peripheral side surface of the inner peripheral portion of the upper opening, and the center of the large-diameter disk body correspond to the center. And a diameter that is concentrically attached to the lower surface of the large-diameter disk body and is approximately the same diameter as the diameter between the inner peripheral side portions passing through the center of the annular body that is attached to the lower surface of the large-diameter disk body. In the state of being attached to the lower surface of the large-diameter disk body, the outer peripheral portion of the annular body attached to the lower surface of the large-diameter disk body can be circumferentially contacted, And a small-diameter disk body made of whole paper for positioning the body on the lower surface of the large-diameter disk body.

  Further, according to a second aspect of the present invention, in the first aspect, the outer peripheral edge portion of the large-diameter disk body is placed in correspondence with the ring-shaped portion of the upper opening of the fiber drum, and the fiber drum is In a state in which the whole is covered from above and the upper opening is closed, the outer peripheral edge of the large-diameter disk mounted on top of each other, the ring-shaped part of the fiber drum, and the cross-section in contact with the outer peripheral part of the fiber drum The closed state is maintained by a tightening ring that tightens these portions in a state of being enclosed from the outside, and the contact position of the tightening ring with respect to the outer periphery of the fiber drum in this state The lower end position of the outer peripheral side surface of the annular body that is in contact with the inner peripheral portion of the upper opening of the fiber drum and hangs down from the lower surface of the large-diameter disk body is equal to or lower than the lower end. As has been the fact that with respect to the lower surface of the large diameter disk member in the deposition conditions, to set the under head length T1 of the annular body to be suspended.

  According to the first aspect of the present invention, the paper cover is attached to the upper opening of the fiber drum, and the outer peripheral edge of the large-diameter disk is placed on the ring-shaped portion of the upper opening of the fiber drum. In the state where the whole fiber drum is covered from above by the large diameter disc body and the upper opening is closed, the portion of the annular body attached to the lower surface of the large diameter disc body is inserted into the upper opening of the fiber drum. Then, the outer peripheral side surface portion of the annular body can be circumferentially contacted with the inner peripheral portion of the upper opening in a surface contact state. In addition, the annular body is similarly attached to the lower surface of the large-diameter disk body, and is positioned by a small-diameter disk body that can contact the inner peripheral side surface portion and the outer peripheral portion of the annular body. Therefore, even when the paper lid is attached to the upper side of the fiber drum and an external force is applied, the paper lid is not easily detached from the fiber drum, and it is possible to maintain a reliable adhesion state.

  In addition, according to the invention of claim 2, the outer peripheral edge of the large-diameter disk body is placed in correspondence with the ring-shaped portion of the upper opening of the fiber drum, and the entire fiber drum is covered by the large-diameter disk body. In a state where the upper opening is covered by covering from above, the outer peripheral edge of the large-diameter disk mounted on top of each other, the ring-shaped portion of the fiber drum, and the U-shaped cross section that contacts the outer periphery of the fiber drum It is assumed that the closed state is maintained by a tightening ring that tightens these portions in a state of being surrounded from the outside, and the lower end of the contact position of the tightening ring with respect to the outer peripheral portion of the fiber drum in this state The lower end position of the outer peripheral side surface of the annular body that is in contact with the inner peripheral portion of the upper opening of the fiber drum and hangs down from the lower surface of the large-diameter disk is positioned below or above the same. Since the lower neck length T1 of the annular body to be hung is set on the lower surface of the large-diameter disk body in the attached state, in a state where the paper lid is attached to the upper opening by the tightening ring, Even when an impact load is applied to the fiber drum, the paper cover does not easily fall off, and a reliable adherence state is maintained.

It is sectional drawing which shows the formation process of the paper cover which concerns on embodiment of this invention. It is a perspective view which shows the decomposition | disassembly state of a paper cover. It is a front view which shows the state which adheres a paper cover to the upper opening of a fiber drum. FIG. 3 is a cross-sectional view showing a state in which a paper lid is attached to an upper opening of a fiber drum and a paper lid and a ring-shaped portion are fastened with a fastening ring. It is a perspective view which shows the shaping | molding process of the fiber drum generally seen conventionally. It is a perspective view which shows the formation process of the conventional paper lid. It is a front view of a paper lid. It is sectional drawing which shows the state which attached the conventional paper cover to the upper opening of the fiber drum, and fastened the paper cover and the ring-shaped part with the fastening ring. FIG. 10 is a perspective view showing a state in which a drop test is performed on the fiber drum in a state where a conventional paper lid is attached to the upper opening of the fiber drum and the paper lid and the ring-shaped portion are fastened with a fastening ring.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The paper lid 20 according to the embodiment is formed and manufactured based on the molding process shown in FIG. 5, and the ring-shaped portion 3 is formed by bending the edge of the upper opening 2 of the paper cylinder 4 to the outer winding. The upper opening of the fiber drum 1 provided with can be closed. In the following description, the configuration of the fiber drum 1 is the same as that of the prior art, so the description thereof will be omitted, and each part will be denoted by the same reference numeral as that of the prior art.

  The paper cover 20 has a disk shape made of paper as in the conventional paper cover 10 shown in FIG. 5D, and is formed in the upper opening 2 of the paper cylinder 4 of the fiber drum 1 as shown in FIG. On the other hand, they are fitted and attached as shown by arrows.

  The paper cover 20 includes a large-diameter disk 21 made of a whole paper having a diameter D1 substantially equal to the diameter of the upper opening 2 of the fiber drum 1 including the ring-shaped portion 3 (see FIG. 4). As shown in FIG. 2, an annular body 23 made of a whole paper cylinder and a small-diameter disk body 22 made of whole paper are attached inside the annular body 23.

  That is, each of the annular body 23 and the small-diameter disk body 22 is attached to the lower surface of the large-diameter disk body 21 as shown in FIG. 4 using an adhesive and forms an overall disk shape in the attached state. It is said. The annular body 23 is formed by cutting a cylindrical material formed by winding a roll paper around a column shape so as to have a predetermined length in the vertical direction.

  Each of the annular body 23 and the small-diameter disk body 22 has a center O corresponding to the center O of the large-diameter disk body 21 with respect to the lower surface of the large-diameter disk body 21 as shown in FIG. It is deposited concentrically. As shown in FIG. 3, the annular body 23, when attached to the lower surface of the large-diameter disk body 21, has a constant neck length T <b> 1 depending on the lower surface of the large-diameter disk body 21. It is supposed to have. That is, as shown in FIG. 2, the annular body 23 has a cylindrical shape including an outer peripheral side surface portion 24 and an inner peripheral side surface portion 25, and the diameter D <b> 2 between the outer peripheral side surface portions 24 passing through the center O is It is made to correspond to the diameter D2 between the inner peripheral parts of the upper opening 2 (refer FIG. 3).

  That is, the paper cover 20 is placed with the outer peripheral edge of the large-diameter disk body 21 corresponding to the ring-shaped part 3 of the upper opening 2 of the fiber drum 1 as shown in FIG. Thus, in a state where the entire fiber drum 1 is covered from above and the upper opening 2 is closed, the annular body 23 is inserted into the upper opening 2 of the fiber drum 1, and the outer peripheral side surface 24 is within the upper opening 2. It will be fitted in a state of circumferential contact with the peripheral surface.

  Further, inside the annular body 23, the small-diameter disk body 22 attached to the lower surface of the large-diameter disk body 21 has a diameter substantially equal to the diameter D3 between the inner peripheral side surface portions 25 passing through the center O of the annular body 23. D3 (see FIG. 1). Thus, as shown in FIGS. 3 and 4, the inner peripheral side surface portion of the annular body 23 that is also attached to the lower surface of the large-diameter disk body 21 in the state of being attached to the lower surface of the large-diameter disk body 21. 25 and the outer periphery thereof can be brought into contact with each other, and the annular body 23 is positioned and supported on the lower surface of the large-diameter disk body 21 by the small-diameter disk body 22 attached to the lower surface of the large-diameter disk body 21. Is possible.

  The paper lid 20 formed and manufactured in this manner is attached to the upper opening 2 of the fiber drum 1 using the conventional tightening ring 13 shown in FIG. It becomes possible to hold. That is, as shown in FIG. 4, the paper cover 20 is placed with the outer peripheral edge of the large-diameter disk body 21 corresponding to the ring-shaped part 3 of the upper opening 2 of the fiber drum 1, and the large-diameter disk body 21 In a state where the entire fiber drum 1 is covered from above and the upper opening 2 is closed, the tightening ring 13 is operated from the expanded diameter state shown by the two-dot chain line in FIG. It is possible to maintain the adherence state to the fiber drum 1.

  Here, in the tightening state by the tightening ring 13 shown by the solid line in FIG. 4, the tightening ring 13 includes the outer peripheral edge portion of the large-diameter disk body 21 that is stacked and placed, the ring-shaped portion 3 of the fiber drum 1, and the ring. The U-shaped cross section is in contact with the outer peripheral portion of the fiber drum 1 below the shaped portion 3. In other words, the tightening ring 13 is reduced in diameter from the state shown by the two-dot chain line to the state shown by the solid line, so that these portions are tightened with the U-shaped section in a state of surrounding from the outside, and the paper cover 20 The closed state of the upper opening 2 can be maintained.

  Here, the lower end of the contact position of the tightening ring 13 that holds the closed state shown by the solid line in FIG. 4 with respect to the outer peripheral portion below the ring-shaped portion 3 of the fiber drum 1 is the inner peripheral portion of the upper opening 2 of the fiber drum 1. The lower end position L1 (see FIG. 4) of the outer peripheral side surface portion of the annular body 23 that is circumferentially contacted and hangs down from the lower surface of the large-diameter disk body 21 is set to be equal or lower. That is, the lower end position of the annular body 23 that hangs down from the lower surface of the large-diameter disk body 21 shown in FIG. 4 is attached to the upper opening 2, and is closed and tightened by the tightening ring 13. In the state of holding, the bottom surface of the large-diameter disk body 21 is equal to or longer than the lower end contact position L1 of the tightening ring 13 with respect to the outer peripheral portion below the ring-shaped portion 3 of the fiber drum 1. It is preferable to set a neck length T1 of the annular body 23 to be suspended.

  That is, by setting the lower neck length T1 of the annular body 23 with respect to the large-diameter disk body 21 in this way, the annular shape in the paper lid 20 that is attached to and fitted to the upper opening 2 of the fiber drum 1 is obtained. The contact area by the surface contact between the outer peripheral side surface 24 of the body 23 and the inner peripheral surface of the upper opening 2 is increased. As a result, when a drop test is performed in which the fiber drum 1 whose paper cover 20 is tightened to the upper opening 2 by the tightening ring 13 is inclined 45 degrees as shown in FIG. It was also confirmed that the paper lid 20 did not easily fall off from the opening 2.

  That is, according to the paper lid 20 for the fiber drum according to the above-described embodiment, the upper portion of the fiber drum 1 is more firmly formed by the annular body 23 having the constant height T1 provided with the outer peripheral side surface portion 24 and the inner peripheral side surface portion 25. It is possible to obtain a state of adherence to the opening 2 and to provide a paper lid that can be reliably attached to the upper opening 2.

  As described above, the paper cover 20 according to the present invention is attached to the upper opening 2 of the fiber drum 1, and does not easily fall out of the opening 2, and contains the contents therein. Thus, even if an external force is applied to this, it is difficult to come off, so that food, medicine, etc. can be safely transported and transported.

DESCRIPTION OF SYMBOLS 1 Fiber drum 2 Upper opening 3 Ring-shaped part 4 Paper cylinder 5 Opening 5a Lower opening edge 6 Notch 7 Perimeter piece 8 Bottom upper board 9 Bottom lower board 10, 20 Paper cover 11, 21 Large diameter disk body 12, 22 Small diameter Disc body 13 Tightening ring 14 Tightening lever 23 Annular body 24 Outer peripheral side face 25 Inner peripheral side face

Claims (2)

A fiber drum having a ring-shaped portion formed by bending an upper opening edge of a paper cylinder into an outer winding, the upper opening of the fiber drum being able to be closed, and from a disk shape made of whole paper In the paper lid for the fiber drum
The diameter of the upper opening of the fiber drum including the ring-shaped part is approximately the same as the diameter of the fiber drum. The outer peripheral edge is placed on the ring-shaped part, and the upper opening of the fiber drum is covered from above. A large-diameter disk made of whole paper that can close the opening;
With the center of the large-diameter disk body corresponding to the center, it is concentrically attached to the lower surface of the large-diameter disk body and is suspended from the lower surface of the large-diameter disk body to be attached. It has a constant neck length and is made of a whole paper cylinder with an outer peripheral side portion and an inner peripheral side portion, respectively. The outer peripheral edge of the large-diameter disk is the ring-shaped portion of the upper opening of the fiber drum. In a state where the entire fiber drum is covered from above by a large-diameter disc body and the upper opening is closed, it is inserted into the upper opening of the fiber drum, and is placed on the inner periphery of the upper opening. An annular body capable of contacting the outer peripheral side surface portion;
The center of the annular body that is concentrically attached to the lower surface of the large-diameter disk body and is attached to the lower surface of the large-diameter disk body with the center of the large-diameter disk body corresponding to the center. In the state where the diameter is approximately the same as the diameter between the inner peripheral side surfaces passing through and is attached to the lower surface of the large-diameter disk body, A small-diameter disk body made of a whole paper that allows the outer peripheral part of the peripheral side surface part to be circumferentially contacted and positions the annular body on the lower surface of the large-diameter disk body;
A paper lid for fiber drums. In Claim 1, the outer peripheral edge part of a large diameter disc body is mounted corresponding to the ring-shaped part of the upper opening of a fiber drum, and the whole fiber drum is coat | covered from upper direction by a large diameter disc body, and it is an upper part. In the state of closing the opening,
The outer peripheral edge of the large-diameter disk body to be stacked and placed, the ring-shaped part of the fiber drum, and the U-shaped cross section that contacts the outer peripheral part of the fiber drum, and these are surrounded by the outside. The tightening ring that tightens the portion of the fiber drum is held in the closed state. In this state, the lower end of the contact position of the tightening ring with the outer peripheral portion of the fiber drum is circumferentially connected to the inner peripheral portion of the upper opening of the fiber drum. The lower end of the outer peripheral side surface of the annular body that is suspended with respect to the lower surface of the large-diameter disk body is positioned below the lower surface of the large-diameter disk body in the attached state so that the lower end position is equal or lower. A paper lid for a fiber drum in which the neck length T1 of the annular body to be hung is set.

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