JP2006062689A - Packing shock-absorbing material of glass funnel for cathode-ray tube - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packing shock-absorbing material which is usable for a long time, and capable of obtaining the excellent filling efficiency of a glass funnel for a cathode-ray tube, facilitating manufacturing and reducing cost, and facilitating laminating work and removing work. <P>SOLUTION: A covering base 2 which covers the outer surface side of a part from the small opening end 22 of a funnel 20 to a body 25 via a yoke 26 and forms a quadrangular shape corresponding to its outer surface shape, and a shock-absorbing protective part 3 which is arranged on the top of the covering base 2 to cover the small opening end 22 are integrated with each other out of the same material. The material is preferably a corrugated fiberboard, and the shock-absorbing protective part 3 overlaps the top of the covering base 2 by folding the corrugated fiberboard. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a packing cushioning material for a glass funnel for a cathode ray tube, and more particularly to a packaging cushioning material used when placing and packaging a funnel having a large opening end (seal edge surface) facing downward in a plurality of upper and lower stages. .

  As is well known, a cathode ray tube has a glass funnel for a cathode ray tube (hereinafter also simply referred to as a funnel) as one of main glass components. That is, as shown in FIG. 7, the funnel 20 has a rectangular large opening end 21 at one end in the tube axis X direction and a circular small opening end 22 at the other end. An edge surface 23 is formed, and the substantially funnel-shaped side wall portion 24 includes a body portion 25 on the large opening end 21 side and a yoke portion 26 that is integrally connected to the body portion 25. In this case, the straight line indicated by reference sign SA in the figure represents the short axis, the straight line indicated by sign LA represents the long axis, and the straight line indicated by reference sign DA represents the diagonal axis.

  The funnel 20 is an article that is easily damaged, and the thickness of the funnel 20 gradually decreases from the large opening end 21, reaches the small opening end 22, and is ¼ to 1/7 of the large opening end 21. Therefore, especially near the small opening end 22 is easily damaged. For this reason, proper packaging is usually performed during transportation and transportation. As an example of the packaging, the large opening end 21 (seal edge surface 23) is used to effectively use the space for storing the funnel 20. A plurality of funnels 20) are placed in a plurality of upper and lower stages. As a packing form in this case, a form in which the funnels 20 and the packing cushioning material are alternately laminated between the upper and lower adjacent funnels 20 in order to reduce the generation of scratches and cracks due to the contact between the two. Accounted for.

  Specifically, according to Patent Document 1 below, a thick buffering spacing member that abuts the small opening end of the funnel and its peripheral part and covers the part, and a thin intermediate part that covers the periphery of the body part of the funnel. A packaging cushioning material comprising a pad is disclosed. Further, according to Patent Document 2 below, the outer surface of the thin covering base that covers the outer surface of the portion extending from the small opening end of the lower funnel to the body portion is reached, and the small opening end of the upper funnel reaches the body portion. A packaging cushioning material is disclosed in which four ribs that come into contact with the inner surface of a part project radially. Further, according to Patent Document 3 below, a thin frame-shaped frame on which the seal edge surface of the funnel is placed is provided with a thin support portion that covers the outer surface side of the portion from the small opening end to the body portion. A packaging cushioning material made of a fixed synthetic resin is disclosed.

Japanese Utility Model Publication No.59-19033 Japanese Patent Publication No. 7-41933 JP 2000-43943 A

  However, since the packing cushioning material disclosed in the above-mentioned Patent Document 1 is a separate buffer padding member and intermediate pad, two types of packing cushioning materials must be manufactured. The manufacturing work is complicated and the manufacturing cost is high. Moreover, when stacking the funnel and the packing cushioning material at the time of packing, two types of packing cushioning materials must be interposed between each funnel, and the stacking operation is extremely troublesome and complicated. In addition, the work of removing the packing cushioning material in the processing step is also troublesome and complicated.

  In addition, the packing cushion disclosed in the above-mentioned Patent Document 2 is merely a radial projection of four ribs on the outer surface of the covering base portion, and a small opening of the funnel that requires protection in particular. There is a problem that an effective buffering action cannot be performed on the part. More specifically, the packing cushion disclosed in the same document has its top portion in contact with the small opening end of the funnel, and the load of the funnel laminated on the top acts on the top portion. Despite the large wear and deformation at the top compared to other parts, no countermeasures have been taken for such a situation, which makes it difficult to withstand long-term use. have.

  Further, the packing cushion disclosed in Patent Document 3 is a frame-shaped thick frame on which the seal edge surface of the funnel is mounted, and a thin support portion is fixed to the frame. If the frames are abutted and stacked vertically, an unnecessarily large space will be formed between the thin support portions, and the funnel filling efficiency will deteriorate. Therefore, the original purpose of effectively using the storage space is hindered.

  The present invention has been made in view of the above circumstances, and enables long-term use and good funnel filling efficiency, and facilitates production and cost reduction, and simplification of laminating work and removal work. It is a technical problem to provide a packing cushioning material capable of achieving the above.

  The present invention devised to solve the above technical problems has a rectangular large opening end and a circular small opening end at one end and the other end in the tube axis direction, respectively, and the body portion on the large opening end side. When a glass funnel for a cathode ray tube in which the yoke portion on the small opening end side is integrally connected is stacked and packed in a plurality of upper and lower stages with the large opening end facing downward, the glass funnel for the cathode ray tube adjacent to the upper and lower sides is interposed between them. A packaging buffer material that covers the outer surface of the portion extending from the small opening end of the glass funnel for cathode ray tube to the body portion and forms a quadrangular pyramid corresponding to the outer surface shape, and the covering The buffer protection portion disposed on the top of the base and covering the small opening end is integrally formed of the same material. Here, the buffer protection portion has a buffering effect on the small opening end by being disposed on the top of the covering base portion, and protects the small opening end from an impact. In addition, the buffer protection part that covers the small opening end is only required that the buffer protection part covers at least the small opening end, but the area covered by the buffer protection part is narrower than the area covered by the covering base ( For example, 1/5 or less) is essential.

  According to such a configuration, the quadrangular pyramid-shaped covering base that covers the outer surface side of the portion from the small opening end of the funnel to the body portion, and the small opening end of the funnel disposed on the top of the covering base Since the packing cushioning material formed by integrally forming the buffering protection portion with the same material is interposed between the upper and lower adjacent funnels, the top of the packing cushioning material is the small opening end of the funnel Even when the upper funnel load is in contact with the top part, the adverse effects of wear and deformation are reduced by the presence of the buffer protection part, which can withstand long-term use, and the funnel and packing buffer. The stacking operation with the material and the removal operation of the packing cushioning material are simplified, and the work efficiency is improved. In addition, when the packaging cushioning material is manufactured, the covering base and the cushioning protection portion need only be integrally formed of the same material, which simplifies the work required to produce the packaging cushioning material and reduces the production cost. Can also be achieved. Furthermore, since there is no component that forms an unnecessarily large space between the upper and lower adjacent covering bases, there is no situation where the funnel filling efficiency deteriorates, and the funnels are stacked vertically. Therefore, the original purpose of effectively using the storage space can be appropriately achieved.

  In the above configuration, the buffer protection portion is preferably disposed on the inner surface side of the covering base portion.

  In this way, since the small opening end of the funnel can be in direct contact with the buffer protection portion, the load of the upper funnel acts on the small opening end of the lower funnel through the top of the packing cushioning material. In addition, adverse effects due to wear and deformation are more reliably reduced by the presence of the buffer protection portion, which is more advantageous for enduring long-term use.

  Said structure WHEREIN: It is preferable that the buffer protection part is overlapped and comprised by the top part of the covering base part by bending of the said material.

  In this way, the buffer protection part can be disposed on the top of the covering base only by bending the material, so that the production work of the packing cushioning material is further simplified and required for its production. Costs can be greatly reduced.

  Said structure WHEREIN: It is preferable that the covering base part is comprised by overlapping the said material by bending the said material.

  In this way, since the strength of the covering base itself can be improved without complicating the production work of the packaging cushioning material, it is possible to further extend the life of the packaging cushioning material. .

  In the above configuration, it is preferable that the second buffer protection portion that covers a partial region of the body portion of the funnel is integrally formed with the same material as the covering base at the bottom of the covering base. In this case, the partial region of the body portion means, for example, wear or deformation due to contact with the packing cushioning material, such as a region near the large opening end side of the body portion or a region only on the long side. An area that is easily generated.

  In this way, even if the packing cushioning material is in contact with not only the small opening end of the funnel but also a partial region of the body part, adverse effects due to wear and deformation are reduced by the presence of the second cushioning protection part. In addition to being able to withstand long-term use, it is possible to suppress the production work of the packing cushioning material from becoming complicated.

  Said structure WHEREIN: It is preferable that each side surface of a covering base part has a step part which the inclination angle became looser than the other part in the intermediate part of the direction from the said top part to a bottom part, respectively.

  In this way, the packing cushioning material has a shape that accurately follows the shape of the outer surface of the funnel, so it is possible to reduce the distance between the upper and lower adjacent funnels, and reduce the overall height of the packing box, etc. It can be made compact.

  Said structure WHEREIN: It is preferable to arrange | position the said 2nd buffer protection part in the bottom part side part rather than the step part of a covering base.

  In this way, the packaging cushioning material is shaped to accurately follow the outer shape of the funnel, and the area of the funnel body that is prone to wear or deformation due to contact with the packaging cushioning material is protected. Done appropriately.

  In the above configuration, the packaging cushioning material is preferably cardboard. In this case, the cardboard may be made of resin, but is more preferably made of paper. The thickness of one cardboard is preferably 3 to 8 mm.

  In this way, by examining an appropriate development view as a packing cushioning material, it is possible to produce a packaging cushioning material having a buffer protection part by folding one cardboard and Significant simplification and significant reduction in production cost can be achieved. Furthermore, if the corrugated cardboard is made of paper, it can be recycled as used paper when wear and deformation become significant, and paper recycling has been established as one of the recycling-oriented societies, especially from the environmental aspect. So it will be useful.

  As described above, according to the packaging buffer material for the glass funnel for a cathode ray tube according to the present invention, the quadrangular pyramid-shaped covering base and the buffer protection section disposed on the top of the covering base are made of the same material. Since they are integrally formed, the stacking work of the funnel and the packing cushioning material and the removal work of the packing cushioning material are simplified, and further, the work required for manufacturing the packing cushioning material is simplified and the production cost is reduced. At the same time, even when the top of the packing cushioning material is in contact with the small opening end of the funnel and the load of the upper funnel is applied to the top of the funnel, adverse effects due to wear and deformation are reduced by the presence of the buffer protection part. It becomes possible to endure use.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a longitudinal sectional view showing a use state of a funnel packing cushioning material according to a first embodiment of the present invention, FIG. 2 is a perspective view of the packing cushioning material, and FIG. 3 is an exploded view of the packaging cushioning material. It is. In addition, about each component of a funnel, the same code | symbol as the funnel shown in FIG. 7 mentioned above is used, and the description is abbreviate | omitted (this is the same also about 2nd Embodiment mentioned later).

  As shown in FIGS. 1 and 2, the packing cushioning material 1 according to the first embodiment includes a covering base 2 formed in a quadrangular pyramid shape and a buffer protection disposed on the top of the covering base 2. Part 3. The covering base portion 2 covers the outer surface side of the portion from the small opening end 22 of the funnel 20 through the yoke portion 26 to the body portion 25, and the buffer protection portion 3 includes the small opening end 22 of the funnel 20 (in detail) The small opening end 22 and a predetermined area around the small opening end 22 are covered. The packing cushioning material 1 is formed by folding a single paper cardboard.

  Referring to a development view of FIG. 3 (a mountain broken line is indicated by a one-dot chain line and a valley broken line is indicated by a two-dot chain line), the covering base 2 of the packing cushioning material 1 includes outer wall parts 2a, 2b, 2c, and 2d, The inner wall portions 2e, 2f, 2g, 2i, and 2j are formed of two layers, and each of these wall portions has a triangular shape. More specifically, the inner wall 2e is inside the outer wall 2a, the inner wall 2f is inside the outer wall 2b, the inner walls 2i and 2j are inside the outer wall 2c, and the inner wall 2g is inside the outer wall 2d. Each is overlaid.

  Further, the buffer protection portion 3 of the packing cushioning material 1 is composed of single wall portions 3a, 3b, 3c, and 3d that are further overlapped with the outer wall portion and the inner wall portion of the covering base portion 2, and each of these one wall portions is also triangular. It is said that. More specifically, the single wall portion 3a is inside the outer inner wall portions 2a and 2e, the single wall portion 3b is inside the outer inner wall portions 2d and 2g, and the single wall portions 3c and 3d are inside the outer inner wall portions 2c, 2i and 2j. , Respectively.

  Further, an insertion piece 4 is formed on the outer wall portion 2a of the covering base portion 2, and a notch 5 is formed on a mountain fold line between the inner wall portion 2e located on the inner side and the inner wall portion 2d adjacent thereto. By inserting the insertion piece 4 into the notch 5, the covering base portion 2 is stopped in a quadrangular pyramid shape and the buffer protection portion 3 is held in a state of being attached to the covering base portion 2.

  As described above, when the packaging cushioning material 1 is assembled by folding and corrugating paper corrugated cardboard, and the funnels 20 are stacked as shown in FIG. The packing cushioning material 1 is placed above the funnel 20 so that the bottom portion of the covering base 2 is in contact with the body portion 25 of the funnel 20 and the next funnel 20 is stacked thereon. It will be. Thus, since the covering base 2 and the buffer protection part 3 which are the components of the packing cushioning material 1 are integrally formed of corrugated cardboard, compared to the case where the two are constituted by separate members. Packing work becomes easy, and further, since the packing cushioning material 1 is assembled in a fold and a valley, it can be recovered without being bulky by flattening after unpacking.

  Further, if the buffer protection part 3 of the packing cushioning material 1 is brought into direct contact with the small opening end 22 of the funnel 20, the buffer protection part 3 is deformed so as to contact the small opening end 22 (that is, the contact area). Therefore, it becomes possible to disperse the load of the funnel 20 stacked in the upper stage, and it is possible to suppress damage around the small opening end 22.

  Next, the packing cushioning material 6 according to the second embodiment of the present invention will be described. 4 is a longitudinal sectional view showing a use state of the funnel packing cushioning material according to the second embodiment of the present invention, FIG. 5 is a perspective view of the packing cushioning material, and FIG. 6 is a development view of the packing cushioning material. It is.

  As shown in FIGS. 4 and 5, the packing cushioning material 6 according to the second embodiment is disposed on the inner surface side of the top portion of the covering base portion 7 and the covering base portion 7 that are formed in a substantially quadrangular pyramid shape. The buffer protection portion 8, the step portion 7 c formed in the intermediate portion in the direction from the top portion 7 a to the bottom portion 7 b of the covering base portion 7, and the second surface disposed on the inner surface side of the bottom portion 7 b of the covering base portion 7. And a buffer protection unit 9. The packing cushioning material 6 is also formed of a single sheet of cardboard.

  The covering base portion 7 is composed of a single layer wall portion at most, and the step portion 7c, which is a component of the covering base portion 7, has a slanting angle that is gentler than other portions. Therefore, the shape of the covering base 7 and the packing cushioning material 6 is close to the outer surface shape of the funnel 20. Further, the top portion 7a of the covering base portion 7 has a quadrangular pyramid shape, whereas the step portion 7c has a triangular space portion 10 between adjacent wall portions, and the bottom side of the step portion 7c. The bottom portion 7b adjacent to each other has a wall portion 7x constituting a minute short side shorter than the short side between the pair of wall portions constituting the long side and the pair of wall portions constituting the short side. It has an octagonal pyramid shape. Thus, even when the bottom portion 7 b of the covering base portion 7 has an octagonal pyramid shape, the shape of the covering base portion 7 and thus the packing cushioning material 6 is close to the outer surface shape of the funnel 20. In this embodiment, the second buffer protection portion 9 is disposed only inside the pair of wall portions constituting the long side of the bottom portion 7 b of the covering base portion 7.

  With reference to a development view of FIG. 6 (a mountain broken line is indicated by a one-dot chain line, a valley broken line is indicated by a two-dot chain line, and a cut line is indicated by a solid line), the top portion 7a of the covering base portion 7 of the packing cushioning material 6 is , Six triangular wall portions 7e are formed by overlapping two wall portions, step portion 7c is formed by four trapezoidal wall portions 7f, and bottom portion 7b is formed by eight trapezoidal wall portions. 7g. Furthermore, the buffer protection unit 8 is configured by four triangular wall portions 8e, and the second buffer protection unit 9 is configured by six trapezoidal wall portions 9e. The packing cushioning material 6 is formed with a notch 11 and an insertion piece 12 for retaining the shape after valley folding and mountain folding.

  According to the packing cushioning material 6 according to the second embodiment, the buffer protection portion 8 and the second buffer protection portion 9 are applied to the small opening end 22 of the funnel 20 and the portion of the body portion 25 on the large opening end 21 side. Therefore, the durability of the portion where the packing cushioning material 6 is likely to be worn or deformed is increased, and the package cushioning material 6 can endure long-term use. In addition, since the packing cushioning material 6 has a quadrangular pyramid shape at the top portion 7a and an octagonal pyramid shape at the bottom portion 7b, and a step portion 7c having a gentle inclination angle is provided between them, the packaging cushioning material 6 is provided with a funnel. It becomes a shape close to the shape of 20, and more funnels 20 can be stacked, or compact packaging becomes possible.

It is a longitudinal cross-sectional view which shows the use condition of the packing cushioning material of the funnel which concerns on 1st Embodiment of this invention. It is a perspective view of the packing cushioning material of the funnel which concerns on 1st Embodiment of this invention. It is an expanded view of the packing cushioning material of the funnel which concerns on 1st Embodiment of this invention. It is a longitudinal cross-sectional view which shows the use condition of the packing cushioning material of the funnel which concerns on 2nd Embodiment of this invention. It is a perspective view of the packing cushioning material of the funnel which concerns on 2nd Embodiment of this invention. It is an expanded view of the packing cushioning material of the funnel which concerns on 2nd Embodiment of this invention. It is a perspective view of a general funnel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 6 Packing cushioning material 2, 7 Covering base part 3, 8 Buffer protection part 7a Top part of covering base part 7b Bottom part of covering base part 7c Step part 9 Second buffer protection part 20 Funnel (glass funnel for cathode ray tube)
21 Large opening end 22 Small opening end 25 Body 26 Yoke

Claims (8)

A glass funnel for a cathode ray tube, which has a rectangular large opening end and a circular small opening end at one end and the other end in the tube axis direction, respectively, and a yoke portion on the small opening end side is integrally connected to the body portion on the large opening end side. A packing cushioning material interposed between the upper and lower adjacent glass funnels when packing with the large opening end being stacked in a plurality of upper and lower stages in a downward state,
A covering base portion that covers the outer surface side of the portion extending from the small opening end of the glass funnel for the cathode ray tube to the body portion and has a quadrangular pyramid shape corresponding to the outer surface shape; and a top portion of the covering base portion and the small portion A packaging cushioning material for a glass funnel for a cathode ray tube, wherein the cushioning protection portion covering the open end is integrally formed of the same material.   The packing buffer material for a glass funnel for a cathode ray tube according to claim 1, wherein the buffer protection portion is disposed on an inner surface side of the covering base portion.   The packaging buffer material for a glass funnel for a cathode ray tube according to claim 1, wherein the buffer protection portion is configured to overlap the top portion of the covering base portion by bending the material.   The packaging buffer material for a glass funnel for a cathode ray tube according to any one of claims 1 to 3, wherein the covering base portion is formed by overlapping the material by bending the material.   5. The first buffer protection portion for covering a partial region of the body portion is integrally formed of the same material as the covering base portion at the bottom portion of the covering base portion. A packaging cushioning material for a glass funnel for a cathode ray tube according to claim 1.   Each of the side surfaces of the covering base portion has a step portion whose inclination angle is looser than other portions at an intermediate portion in a direction from the top portion to the bottom portion. A packaging cushioning material for a glass funnel for a cathode ray tube according to claim 1.   The packaging cushioning material for a glass funnel for a cathode ray tube according to claim 6, wherein the second buffering protection portion is disposed on the bottom side portion of the covering base portion with respect to the step portion.   The packaging cushioning material for a glass funnel for a cathode ray tube according to any one of claims 1 to 7, wherein the material is cardboard.

Images