JP2008150114A - Paper-made buffer body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper-made buffer body which reduces impact to a packaged article by absorbing a dropping impact excellently, even when a heavy packaged article is packaged. <P>SOLUTION: By forming the first buffering faces 2a, 2b to be established so that the bottom face of an inside buffer body 6 of a channel shape in the cross section may come into contact with each face folded from opposite creases mutually in a lower buffer body 1 consisting of a paper-made board material, each face for forming the respective first buffering faces 2a, 2b are formed by two-sheet superposition faces 2a', 2b' and not superposition faces 2a'', 2b'', and the packaged article is mounted on the inside buffer body 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a protective paper shock absorber used when, for example, various parts installed inside a copying machine, a printer, or the like are packed.

  Conventionally, resin shock absorbers made of urethane foam or polystyrene foam have been used as protective shock absorbers for packing various parts installed inside copiers and printers. In view of the above processing problems, ease of recycling, and the like, a paper cushion constituted by folding and assembling a paper material such as cardboard has been proposed (see, for example, Patent Document 1).

  By the way, it is necessary to form the paper cushion in accordance with the parts to be packed. When packing the developing unit of the image forming apparatus such as a copying machine or a printer, for example, FIGS. 8A and 8B are used. A paper shock absorber having a lower shock absorber for packing the developing unit A as a packing article as shown in FIG. As shown in this figure, the lower buffer body 20 has a pair of opposing mounting surfaces 21a and 21b on which the bottom surface of the developing unit A is mounted, and each mounting surface 21a, 21b is bent and provided in each buffer surface 22a, 22b bent in the triangle shape. The tips of the mounting surfaces 21a and 21b are not in contact with each other and a gap is provided.

Even if the paper shock absorber packed so as to place the developing unit A on the lower shock absorber 20 is accidentally dropped at the time of transport or the like, the bottom of each placement surface 21a, 21b is Since it is hollow, it is possible to absorb the impact caused by dropping and reduce the impact on the developing unit A.
Japanese Patent No. 2955534

  By the way, when the developing unit A having a relatively heavy weight (for example, about 1.5 to 3 kg) is mounted on the mounting surfaces 21a and 21b of the lower buffer 20 constituting the lower side of the paper buffer. Has a large impact when dropped during transportation. For this reason, in the configuration of the conventional lower buffer body 20 described above, a large impact cannot be absorbed satisfactorily, a large impact is generated in the developing unit A packed, and the toner contained in the developing unit A leaks. May occur.

  Therefore, the present invention has an object to provide a paper shock absorber that can satisfactorily absorb a shock at the time of dropping even when packing a relatively heavy packed article and reduce the impact on the packed article. And

  In order to achieve the above object, the invention described in claim 1 is a paper cushion having a cushioning function for holding a packaged article and absorbing an impact applied to the packaged article. The buffer body is formed with a first buffer surface on which the bottom surface of the middle buffer body having a U-shaped cross section is installed on each surface folded from the creases facing each other, and each of the surfaces forming the first buffer surface has 2 It is formed by a sheet overlapping surface and a surface not overlapping, and a packaged article is placed on the middle shock absorber.

  According to the present invention, the first buffer surface on which the bottom surface of the middle buffer body having a U-shaped cross section is formed on each surface folded from the folds facing each other on the lower buffer body made of paper board material, Since each of the surfaces forming one buffer surface is formed by a surface that does not overlap with the two overlapping surfaces, it is possible to absorb the impact at the time of a drop impact well, and on the middle buffer The impact on the packaged article to be placed can be greatly reduced.

  Hereinafter, the present invention will be described based on the illustrated embodiments. 1 is a plan view showing a lower shock absorber of a paper shock absorber according to an embodiment of the present invention, FIG. 2 (a) is a cross-sectional view taken along line AA of FIG. 1, and FIG. 2 (b) is FIG. FIG. 3 is a plan view showing a middle shock absorber of the paper shock absorber according to the embodiment of the present invention, and FIG. 4 is an upper shock absorber of the paper shock absorber according to the embodiment of the present invention. It is a top view which shows a body.

  The paper shock absorber according to the embodiment of the present invention is configured by mounting a lower shock absorber 1, a middle shock absorber 6 and an upper shock absorber 7 made of cardboard or the like. The lower shock absorber 1 of the paper shock absorber according to the embodiment of the present invention has an integrated structure in which two paper shock absorbers are attached in some places. In FIG. 1, FIG. 3, and FIG. 4, the part shown with the chain line is a fold. 2A and 2B show a state in which the middle shock absorber 6 is attached to the lower shock absorber 1. In addition, in FIG. 1, the inside buffer body 6 is shown with the dashed-two dotted line.

  As shown in FIGS. 1, 2 (a), (b), a first symmetrically provided with respect to a center line (a one-dot chain line in the vertical direction in FIG. 1) a of the lower shock absorber 1 made of paper board material. The buffer surfaces 2a and 2b are overlapped with the two overlapping surfaces, the surfaces (a thick solid line portion in FIG. 2 (a)) 2a 'and 2b' formed by overlapping two layers on the top and bottom folded from the folds facing each other. 2a ″ and 2b ″, which are not surfaces (portions other than the thick solid line portion in FIG. 2A), and both sides (side surfaces in the vertical direction in FIG. 1) of the first buffer surfaces 2a and 2b are mutually connected. Second buffer surfaces 3a and 3b and second buffer surfaces 3c and 3d, which are folded from opposite folds, are provided, respectively. A gap is provided between the tip portions of the second buffer surfaces 3a and 3b and the second buffer surfaces 3c and 3d facing each other. Further, as shown in FIG. 5, a ruled line 11 is provided at a position where the front end surface of the two-layer overlapping surface 2a ′ of the surface 2a ″ where the first buffer surface 2a is not overlapped is substantially in contact. A ruled line is similarly provided on the buffer surface 2b side.

  The first buffer surface 2a, the second buffer surfaces 3a and 3b, and the first buffer surface 2b and the second buffer surfaces 3c and 3d are the outer wall surfaces 4a and 4b and the outer wall surface 4c having a triangular cross section provided in the lower buffer body 1. , 4d are integrally formed by cutting and crease in the middle part along the longitudinal direction. Furthermore, side wall surfaces 5a and 5b having a trapezoidal cross section are provided along the vicinity of both sides (both sides in the left-right direction in FIG. 1) of the outer wall surfaces 4a and 4d of the lower buffer body 1. Thus, the lower buffer body 1 is formed symmetrically with respect to the center line (the one-dot chain line in the vertical direction in FIG. 1) a.

  The side surfaces 6a and 6b are folded on the upper surfaces of the first buffer surface 2a, the second buffer surfaces 3a and 3b, and the first buffer surface 2b and the second buffer surfaces 3c and 3d of the lower buffer body 1 configured as described above. The middle cushioning body 6 (see FIG. 1, FIG. 2 (b), and FIG. 3) that is bent along is set. Then, a developing unit (not shown) having a weight (for example, about 1.5 to 3 kg) including toner is placed on the buffer body 6.

  Then, after the developing unit (not shown) is placed on the middle buffer body 6, the developing unit (not shown) is included in the upper buffer body 7 (see FIG. 4) whose four side surfaces are bent along the folds. In this way, it is installed on the lower buffer body 1. Inside the upper buffer 7, there are provided projecting buffer parts 7 a and 7 b that are in contact with the upper part of the developing unit (not shown). The shape of the buffer portions 7a and 7b is formed corresponding to the shape of the upper portion of the developing unit (not shown). Further, on both sides of the upper buffer body 7 (both sides in the vertical direction in FIG. 4), notches 7c and 7d are formed for inserting hands when the upper buffer body 7 is removed.

  The width b of the non-overlapping surfaces 2a ", 2b" (see Fig. 1) of the first buffer surfaces 2a, 2b of the lower buffer body 1 is 10 to 20 mm. If the width b is less than 10 mm, the strength of the first buffer surfaces 2a and 2b is increased (it is difficult to break even if the ruled line 11 is provided). The toner may be leaked to the toner contained in the developing unit. Further, when the width b of the non-overlapping surfaces 2a ", 2b" of the first buffer surfaces 2a, 2b exceeds 20 mm, the strength of the first buffer surfaces 2a, 2b becomes weak, and the first buffer surfaces 2a, 2b, The bottom surface of the space formed under 2b is crushed, and an impact is transmitted to the developing unit, causing leakage of the contained toner. In the present embodiment, the width b of the non-overlapping surfaces 2a ″ and 2b ″ of the first buffer surfaces 2a and 2b is 15 mm.

  Further, the interval (gap) c between the tip portions of the second buffer surfaces 3a, 3b, 3c, and 3d of the lower buffer body 1 facing each other is formed to be 20 to 30 mm. If this interval (gap) c is less than 20 mm, the impact is not sufficiently absorbed during a drop impact, and the impact is transmitted to the developing unit (not shown), and the toner contained in the developing unit leaks. Sometimes. In addition, if the distance (gap) c between the tip portions facing each other exceeds 30 mm, the lower surface of the space formed under these will be crushed during a drop impact, and the impact will be transmitted to the developing unit. This may cause leakage of toner contained therein. In the present embodiment, the distance (gap) c between the tip portions of the second buffer surfaces 3a, 3b, 3c, 3d facing each other is set to 25 mm.

  As described above, the second buffer surfaces 3a and 3b and the second buffer surfaces 3c and 3d are provided on both sides of the first buffer surfaces 2a and 2b (both sides in the vertical direction in FIG. 1) to form a two-surface configuration. Thus, for example, the impact when dropping from a height of about 80 cm can be satisfactorily absorbed by the second buffer surfaces 3a, 3b, 3c, 3d provided on both sides of the first buffer surfaces 2a, 2b. Accordingly, it is possible to prevent toner leakage from a developing unit (not shown) having a weight (for example, about 1.5 to 3 kg) including the toner placed on the intermediate buffer 6. Further, by providing a ruled line 11 at a position where the tip surfaces of the two overlapping surfaces 2a 'and 2b' of the surfaces 2a "and 2b" where the first buffer surfaces 2a and 2b are not overlapped, a drop impact is provided. Since the surfaces 2a ″ and 2b ″ that do not sometimes overlap each other are bent along the ruled line 11, the shock at the time of dropping can be effectively absorbed and the buffering effect can be further enhanced.

  In addition, since both side surfaces of the developing unit (not shown) uniformly contact the side surfaces 6a and 6b of the middle buffer body 6, the margin for toner leakage is improved, and the side surfaces 6a and 6b of the middle buffer body 6 further improve the development unit. The bias can be kept small even with respect to the weight bias. Further, since the side wall surfaces 5a and 5b of the lower shock absorber 1 are trapezoidal in cross section, and the lower shock absorber 1 is three-dimensionally symmetrical with respect to the center line (the one-dot chain line in the vertical direction in FIG. 1) a. Similarly, the impact at the time of dropping is absorbed by the entire lower buffer body 1 to prevent toner leakage from the developing unit.

  Further, by making the height of the side surfaces 6a and 6b of the middle buffer body 6 the same as the height of the developing unit to be placed, the side surface of the developing unit uniformly hits the side surfaces 6a and 6b at the time of a drop impact, thereby causing toner leakage. Can be improved.

  In the present embodiment, as shown in FIG. 1, the upper surfaces of the side wall surfaces 5a and 5b of the lower shock absorber 1 are provided with a plurality of cuts 10a, 10b, 10c and 10d along the inner corners 9a and 9b. Is provided. The inner corners 9a and 9b on the upper surfaces of the side wall surfaces 5a and 5b are formed in an R shape (see FIG. 2). Thereby, the margin of shock absorption in the vicinity of the inner corners 9a, 9b of the upper surfaces of the side wall surfaces 5a, 5b, which can easily come into contact with the shape of the developing unit (not shown), can be improved.

  Further, in the present embodiment, as shown in FIG. 6 (a), the side walls 5a and 5b are superimposed on the inner sides of the both end faces (in FIG. 6 (a), one end face 5a 'of the side wall face 5a). By providing each of the surfaces 12, it is possible to suppress a decrease in strength of the both end surfaces of the side wall surfaces 5a and 5b at the time of dropping. The overlapping surface 12 is similarly provided on the other end surface of the side wall surface 5a and on both side surfaces of the side wall surface 5b. Further, as shown in FIG. 6B, the both end surfaces of the side wall surfaces 5a and 5b (in FIG. 6B, one end surface 5a ′ of the side wall surface 5a) are shown in FIG. 6A. The structure which provides the overlapping surface 12a of a shape smaller than the superimposed surface 12 may be sufficient.

  Further, in the present embodiment, by providing notches 8a, 8b, 8c, and 8d (see FIGS. 1 and 6) on both end sides along the longitudinal direction of the upper surfaces of the side wall surfaces 5a and 5b, respectively, The bendability in the vicinity of both ends of the upper surfaces of the wall surfaces 5a and 5b is improved, and the absorption margin at the time of a drop impact can be further improved.

  In the above-described embodiment, the linear cuts 10a, 10b, 10c, and 10d are provided in the vicinity of the inner corners 9a and 9b on the upper surfaces of the side wall surfaces 5a and 5b of the lower shock absorber 1. For example, as shown in FIG. 7A, a notch 10b formed to bend from the upper surface side toward the inner wall surface with the inner corner portion 9a formed in an R shape therebetween, As shown in FIG. 7B, a notch 10b formed so as to spread outward from the upper surface side toward the inner wall surface with the inner corner portion 9a formed in an R shape in between may be used. 7A and 7B, only the notch 10b on one side (end surface 5a 'side) of the side wall surface 5a is shown, but also on the other side of the side wall surface 5a and in the vicinity of both sides of the side wall surface 5b. Similar notches are formed.

  In this way, by forming a cut from the upper surface side toward the inner wall surface with the inner corner portion 9a in between, the inner wall surfaces of the side wall surfaces 5a and 5b (the wall surface on the side where the middle shock absorber 6 is installed). The margin for shock absorption can be improved.

The top view which shows the lower buffer body of the paper buffer body which concerns on embodiment of this invention. (A) is the sectional view on the AA line of FIG. 1, (b) is the sectional view on the BB line of FIG. The top view which shows the inside buffer body of the paper buffer bodies which concern on embodiment of this invention. The top view which shows the upper buffer body of the paper-made buffer bodies which concern on embodiment of this invention. The expansion perspective view which shows the 1st buffer surface of a lower buffer body. (A) is a schematic perspective view which shows an example of the overlapping surface provided in the end surface of the side wall surface of a lower buffer body, (b) is a modification of the overlapping surface provided in the end surface of the side wall surface of a lower buffer body. The schematic perspective view shown. (A) is a schematic perspective view which shows an example of the notch formed near the upper surface corner part of the side wall surface of the lower buffer body, (b) is a deformation | transformation of the notch formed near the upper surface corner part of the side wall surface of the lower buffer body. The schematic perspective view which shows an example. (A) is a top view which shows the lower buffer body of the paper-made buffer bodies in a prior art example, (b) is CC sectional view taken on the line of Fig.8 (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lower buffer body 2a, 2b 1st buffer surface 3a, 3b 2nd buffer surface 4c, 4d Outer wall surface 5a, 5b Side wall surface 6 Middle buffer body 6a, 6b Side surface 7 Upper buffer body 7a, 7b Buffer part 8a, 8b, 8c , 8d Notch 9a, 9b Inner corner 10a, 10b, 10c, 10d Notch 11 Ruled line

Claims (17)

A paper cushion having a cushioning function for holding a packaged article and absorbing an impact applied to the packaged article,
A first buffer surface is formed on a lower buffer body made of paper board material on each surface folded from folds facing each other, and the bottom surface of the middle buffer body having a U-shaped cross section is installed, and the first buffer surface is formed. Each of the surfaces has a surface that is not overlapped with a two-sheet overlapping surface, and a packing article is placed on the intermediate buffer.
A paper cushion characterized by that. The width of the non-overlapping surface of the first buffer surface is 10 to 20 mm.
The paper cushion according to claim 1. Forming a second buffer surface in the vicinity of the first buffer surface of the lower buffer body on each of the surfaces folded from the folds facing each other, and forming the second buffer surface; The front sides of each surface face each other with a predetermined distance from each other,
The paper cushion according to claim 1 or 2, wherein The interval between the tips facing each of the surfaces forming the second buffer surface is 20 to 30 mm.
The paper cushion according to claim 3. The second buffer surface is provided on both sides of the first buffer surface, and the first buffer surface and the second buffer surface are along a longitudinal direction of an outer wall surface having a triangular cross section provided in the lower buffer body. It is integrally formed by making a cut and a crease in the middle part,
The paper shock absorber according to claim 3 or 4, characterized in that At least two of the outer wall surfaces provided with the second buffer surfaces on both sides of the first buffer surface are provided at a predetermined interval;
The paper cushion according to claim 5. A ruled line is provided at a position where the front end surface of the two overlapping surfaces of the first buffer surface is not in contact with the non-overlapping surface,
The paper cushion according to any one of claims 1 to 6, wherein the cushion is made of paper. Side wall surfaces having a trapezoidal cross section are provided on both sides of the lower buffer body so as to be positioned along both sides of the middle buffer body,
The paper shock absorber according to any one of claims 1 to 7. Provided a plurality of cuts in the vicinity of the inner corner along the longitudinal direction of the upper surface of each side wall surface,
The paper cushion according to claim 8. The notch is provided from the upper surface side toward the inner wall surface with the inner corner portion in between,
The paper cushion according to claim 9. The inner corner is formed in an R shape,
The paper cushion according to claim 9 or 10, characterized in that Provided two overlapping surfaces on both end surfaces along the longitudinal direction of each side wall surface,
The paper cushion according to any one of claims 8 to 11, wherein Provided with notches on both ends of the upper surface of each side wall surface,
The paper shock absorber according to any one of claims 8 to 12. The lower buffer body is formed symmetrically with respect to the center line.
The paper cushion according to any one of claims 1 to 13, wherein the cushion is made of paper. The height of the folded side surface of the middle shock absorber having a U-shaped cross section is substantially the same as the height of the package placed on the middle shock absorber.
The paper cushion according to any one of claims 1 to 14, wherein the cushion is made of paper. On the upper surface side of the lower buffer body where the middle buffer body is installed, an upper buffer body made of paper board material is provided,
The paper cushion according to any one of claims 1 to 15, wherein the cushion is made of paper. Inside the upper shock absorber, a shock absorber is provided in accordance with the upper shape of the package,
The paper cushion according to claim 16.

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