JP2005162287A - Lid hooking device for extremely thin plastic container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable the engagement of a lid body with a container body three-dimensionally to exhibit hardness or rigidity even when a plastic material is thin in a plastic container formed by vacuum molding. <P>SOLUTION: An extremely thin plastic container with a lid connected by a hinge part 3 is provided with a truncated chevron-shaped guiding part 6 to expand outwardly continuously from a constricted part 5 in a flat peripheral edge 4 of the container body 1, two hollow trapezoidal protrusions A7 having respective inclined surfaces 8 at the peripheral edge 4 near the guiding part, and a step part 14 to be a constricted part 13 through a folding line 12 from a peripheral edge 9 corresponding to the truncated chevron-shaped guiding part of the container body 1 in the lid body 2. A planar overlock part 15 is disposed at the peripheral edge continuously from the step part, and a hollow trapezoidal protrusion B10 having an inclined surface 11 is formed, and a space part 16 to release the two trapezoidal protrusions A of the container body 1 is made at both sides of the trapezoidal protrusion B so as to form the lid hooking device for extremely thin plastic container. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a lid for an extremely thin plastic container of about 0.3 mm by vacuum molding, and relates to a container for packaging vegetables, confectionery and other relatively light items as a packed product.

  For thin-walled plastic containers, the flat part at the periphery of the container body and lid is used as a packed product containing the goods, and the flat parts are fixed with adhesive tape or stapled metal fixing pieces. The container body and the lid are fastened with a rubber ring or a band for each pack.

In the case of a relatively thick plastic product made of synthetic resin, a method is also employed in which a concave and convex fitting portion is provided on the peripheral portion of the container and the lid, and the fitting is performed.
Published utility model application No. 64-9113 A plastic container with a single-open lid Japanese Utility Model Application Publication No. 60-4411 Closing mechanism of packaging container Patent No. 3053811 Patent gazette Plastic container closure device

  In the case of a vacuum-formed plastic container, if the plastic material is thin, there is no hardness or rigidity, so that the engaging force is weak, and it is not possible to adopt a form that provides a concave-convex fitting portion and fits them like a thick plastic product. In addition, if the concavo-convex shape is complicated, there is a risk of breakage because the plastic is thin.

  In the present invention, the above-mentioned problems are addressed, and even if the plastic material is thin, a hollow trapezoidal protrusion having an inclined surface is provided by vacuum forming, and a bending line, a constricted portion, a stepped portion, etc. are provided from the peripheral portion. It is provided to provide rigidity to realize a three-dimensional mooring that is not uneven fitting, and the lid can be smoothly and easily engaged with the main body using the inclined surface of the trapezoidal protrusion.

  After mooring, the lid can be stably moored without shifting up, down, left and right, and back and forth, and when removing the lid, it can be easily separated using the trapezoidal protrusion on the lid To do.

  Furthermore, even if a trapezoidal protrusion is provided, it is intended to prevent a bulky case when a plurality of containers are stacked with the lid open.

  In order to solve the above-mentioned problem, in the first invention, in a very thin plastic container with a lid connected by a hinge part, a C-shaped introduction part that spreads outward following the constriction part at the planar peripheral edge part of the container body Two hollow trapezoidal projections A each having an inclined surface are provided in the peripheral portion adjacent to the introduction portion, and the lid body is bent from the peripheral portion corresponding to the square-shaped introduction portion of the container body. A stepped portion is provided as a constricted portion via a line, a hollow trapezoidal protrusion B having a flat overlock portion on the periphery and a downward inclined surface is provided following the stepped portion, and both sides of the trapezoidal protrusion B are provided. An extremely thin plastic container lid closing device is formed by forming a space into which the two trapezoidal protrusions A of the container body are fitted and inserted.

  In the second aspect of the invention, the hollow trapezoidal protrusion B provided on the lid body is reinforced by a stepped portion with a straight bent line as a base portion, and the planar overlock portion is a planar C-shaped introduction of the container body. An ultra-thin plastic container lid device that was easy to moor at the part.

  In the third aspect of the invention, when the lid is closed, when the inclined surface of the trapezoidal protrusion B of the lid slides along the inclined surface of the trapezoidal protrusion A of the container body and exceeds the C-shaped introduction portion, the overlock portion Engaged with the back surface of the C-shaped introduction part to moor the lid.

  In the fourth invention, when the lid is closed, a thumb is placed on the recessed portion of the hollow trapezoidal protrusion B that is turned upside down, and the trapezoidal protrusion B is pinched by placing an index finger on the back side, so The overlock part is moored to the back of the C-shaped introduction part on the trapezoidal protrusion A on both sides.

  In the fifth invention, when the lid is anchored to the container main body, the constricted portion of the stepped portion and the constricted portion of the main body are engaged, the lower part of the bending line is engaged with the locking edge of the container main body, A lid device for an ultra-thin plastic container was obtained in which the trapezoidal protrusion A and the space of the lid were engaged to form a three-dimensional mooring.

  In the sixth invention, when the lid is moored with the container body, the constricted portion of the stepped portion and the constricted portion of the main body are three-dimensionally engaged, and the overlock portion of the trapezoidal protrusion B upside down by the stepped portion is It entered into the back side of the C-shaped introduction part, and was anchored so that the two trapezoidal protrusions A of the container main body abut on the locking part provided in the space part of the lid.

  In the seventh invention, when a plurality of containers are stacked while the lids connected at the hinges are opened, the next two trapezoidal protrusions A and B are respectively formed into the hollow trapezoidal protrusions A and B at the previous stage. It was inserted and slid using an inclined surface so that it could be stacked closely.

  The device of the present invention is a thin plastic container of about 0.3 mm or less and can be vacuum-formed with ultra-thin plastic that has almost no material strength, and it is lightweight and easy to three-dimensionally anchor the lid to the container body. A lid that can be easily opened with a trapezoidal protrusion on the lid when the lid is separated from the main body with a strong engagement force when the lid is closed with little deviation in the front / rear, left / right or up / down directions. A fastening device could be provided.

  Two trapezoidal protrusions A having an inclined surface with a trapezoidal lead-in part provided from the constricted part of the peripheral edge of the container body, the trapezoidal protrusion B of the lid being inserted upside down, abutting against the locking edge of the main body Is inserted and inserted into the space of the lid and the two are engaged in a three-dimensional manner, so that the mooring is strengthened with little deviation. In addition, the pair of trapezoidal protrusions A having inclined surfaces also has an effect of reinforcing the C-shaped introduction portion.

  In the lid body, the bent line is linear, and an overlock portion following the constricted portion is provided so that the back surface of the introduction portion and the overlock portion are more securely anchored.

  Since the trapezoidal protrusions A and B are hollow, the container main bodies are stacked and stored in a plurality of stages with the lid open, and are not in close contact with each other and transported in a large amount when transported.

  In the present invention, a planar C-shaped introduction part is provided from the pair of constricted parts at the peripheral part of the container body, and each of the hollow trapezoidal protrusions A is formed to reinforce the C-shaped introduction part.

  The lid is provided with a trapezoidal protrusion B that can be inserted into the C-shaped introduction part of the container body, and a flat overlock part is formed on the periphery, so that the C-shaped introduction part and the overlock part are closed when the lid is closed. Are anchored, reinforced by a pair of trapezoidal protrusions A and engaged with the lower part of the bending line of the lid body, and the pair of trapezoidal protrusions A enter the space of the lid body, and are three-dimensionally engaged with each other. The lid is realized and realized.

  Since the trapezoidal protrusion A and the trapezoidal protrusion B each have an inclined surface, the inclined surface can be easily engaged with each other when the lid is closed.

  The trapezoidal protrusion B is reinforced by a straight bend line from the peripheral edge of the container body, and is easy to bend and has an inverted trapezoidal shape, so it can be pinched with the thumb and index finger and engaged with the C-shaped introduction part of the container body And can be used for withdrawal. Further, it has a constricted portion and a stepped portion to reinforce the peripheral overlock portion together with the trapezoidal protrusion B.

  1, 2, and 3, 1 is a container body, 2 is a lid, and 3 is a hinge portion. Reference numeral 4 denotes a planar peripheral portion of the container body 1, which is provided with a C-shaped introduction portion 6 that extends outward after the constricted portion 5.

  Reference numeral 7 denotes a hollow trapezoidal protrusion A, which is provided on the peripheral edge portion 4 in the vicinity of the C-shaped introduction portion 6, and the trapezoidal protrusion A 7 has an inclined surface 8. The hollow trapezoidal protrusions 7 are paired with the C-shaped introduction part 6 in the middle.

  Reference numeral 9 denotes a peripheral portion of the lid body 2 which is flat so as to be in close contact with the peripheral portion 4 of the container body 1. Reference numeral 10 denotes a hollow trapezoidal protrusion B which is provided at the peripheral edge portion 9 of the lid body 2 corresponding to the C-shaped introduction portion 6 of the container body 1 and has an inclined surface 11.

Reinforcing grid-like irregularities may be provided on the tops of the trapezoidal protrusions A and B.
The trapezoidal protrusion B10 is provided with a stepped portion 14 as a constricted portion 13 from the peripheral portion 9 through the bending line 12, and has a planar overlock portion 15 on the peripheral edge following the stepped portion 14. The bending line 12 is straight and is a base portion of B10, and has a reinforcing effect together with the step portion 14 while facilitating bending from the peripheral portion 9.

  Reference numeral 16 denotes a space, which is provided on both sides of the trapezoidal protrusion B10 so that the trapezoidal protrusions A7 and 7 of the container main body 1 are missed when the lid is closed. Reference numeral 18 denotes a locking portion.

  When the lid is closed, the trapezoidal protrusion B10 is inserted on the inclined surface 11 so as to slide on the inclined surfaces 8 of the trapezoidal protrusions 7 and 7 on both sides of the container main body 1, and the overlock portion 15 is the C-shaped introduction portion 6 of the container main body 1. , 6 can be closed by engaging the back side. Reference numeral 19 denotes a locking edge that serves to fix the lid together with the bending line of the lid.

  Since the trapezoidal protrusion B10 is sandwiched between the constricted part and the trapezoidal protrusions A7 and 7 on both sides, there is little deviation in the vertical and horizontal directions, and the mooring state of the lid is stable.

  Furthermore, when closing the lid, place the thumb on the concave part of the inverted hollow trapezoidal protrusion B, hook the index finger on the back side and pinch the trapezoidal protrusion B, and lead it to the C-shaped introduction part of the container body, over The lock part is moored to the back of the C-shaped introduction part on the trapezoidal protrusion A on both sides.

Also, when the lid is moored with the container body, the constricted portion of the stepped portion and the constricted portion of the main body are engaged, the lower part of the bending line is engaged with the locking edge of the container main body, and the trapezoidal protrusion A of the container main body The space portion of the lid was engaged to form a three-dimensional mooring. And the constriction part of the step part and the constriction part of the main body are three-dimensionally engaged, and the overlock part of the trapezoidal protrusion B upside down is inserted into the back side of the C-shaped introduction part of the container main body by the step part, The two trapezoidal protrusions A of the container main body were tethered so as to come into contact with the engaging portion provided in the space portion of the lid.
Accordingly, since the lid body is three-dimensionally engaged in the up-down direction, the front-rear direction, and the left-right direction, the lid body is firmly anchored and does not come off carelessly.

  If you want to remove the lid, put your thumb on the concave part of the inverted hollow trapezoidal protrusion B, and pull the trapezoidal protrusion B by pulling the trapezoidal protrusion B with the index finger on the back side. The lid can be opened.

  When stacking a plurality of containers with the lid open, each trapezoidal protrusion A and trapezoidal protrusion B enter the upper and lower protrusions, respectively, and each peripheral edge can also be stacked closely. They can be stored, transported, etc.

  FIGS. 8A, 8B and 8C are explanatory views showing the engagement state of the trapezoidal protrusions A and B. FIG.

  The pair of trapezoidal protrusions A provided on the container body and the corresponding trapezoidal protrusion B are provided at one place on the peripheral edge in the drawing, but may be provided at a plurality of places when the peripheral edge is long.

  The trapezoidal protrusion A provided on the container body can be further reinforced by the rib 17 from the peripheral edge. A step or a rib can be provided on the peripheral edge itself.

  When the lattice-shaped reinforcing portions are formed on the flat portions of the trapezoidal protrusions A and B, the trapezoidal protrusions are further reinforced.

  The effect of increasing the demand for packed products of vegetables, confectionery and other relatively light items in containers made of ultra-thin plastic materials is recognized.

The top view of this invention apparatus which made the cover body an open state. The same side view. The principal part expansion perspective view which shows the state which inserts the trapezoid protrusion of a cover body in order to cover. The enlarged plan view of the trapezoid protrusion A of a container main body. The expanded sectional view by the AA line. FIG. 3 is an enlarged plan view when a trapezoidal protrusion B of the lid is brought close to the main body side. The expanded sectional view by the BB line. (A), (B), and (C) are explanatory views showing the engagement state of trapezoidal protrusions A and B. FIG. The principal part enlarged plan view of the state where it lidded on the container main body.

Explanation of symbols

1 Container body 2 Lid 3 Hinge part 4 Peripheral part 5 Neck part 6 C-shaped introduction part 7 Trapezoid protrusion A
8 Inclined surface 9 Perimeter 10 Trapezoidal protrusion B
11 Inclined surface 12 Bending line 13 Constricted portion 14 Stepped portion 15 Overlock portion 16 Space portion 18 Locking portion 19 Locking edge

Claims (7)

In an ultra-thin plastic container with a lid connected at the hinge,
In the flat peripheral edge of the container body, a C-shaped introduction part that extends outward is provided following the constriction, and two hollow trapezoidal protrusions A each having an inclined surface are provided in the vicinity of the introduction part. ,
The lid is provided with a stepped portion that is a constricted portion through a bending line from the peripheral portion corresponding to the C-shaped introduction portion of the container main body, and a flat overlock portion is provided on the peripheral edge following the stepped portion. An ultra-thin plastic container lidding device having a hollow trapezoidal protrusion B having an inclined surface and a space for escaping the two trapezoidal protrusions A of the container body on both sides of the trapezoidal protrusion B.   A hollow trapezoidal protrusion B provided on the lid is reinforced by a stepped portion with a straight bent line as the root, and an overlock portion at the flat peripheral edge is moored at the flat C-shaped introduction portion of the container body. 2. The cap apparatus for an ultra-thin plastic container according to claim 1, which is made easier.   When closing the lid, when the inclined surface of the trapezoidal protrusion B of the lid slides along the inclined surface of the trapezoidal protrusion of the container body and exceeds the C-shaped introduction part, the overlock part introduces the C-shaped The lid device for an ultra-thin plastic container according to claim 1, wherein the lid body is moored by engaging with the back surface of the portion.   When closing the lid, place your thumb in the concave part of the inverted trapezoidal protrusion B, pull it out with your index finger on the back side, pull it out, and overlock to the C-shaped introduction part of the container body 2. The cap apparatus for an ultrathin plastic container according to claim 1, wherein the portion is moored.   When the lid is moored with the container main body, the constricted portion of the stepped portion and the constricted portion of the main body are engaged, the lower part of the bending line is engaged with the locking edge of the container main body, the trapezoidal protrusion A of the container main body and the lid A device for closing an ultra-thin plastic container in which a body space is engaged to form a three-dimensional mooring.   When the lid is moored with the container body, the constricted part of the step part and the constricted part of the main body are three-dimensionally engaged, and the overlock part of the trapezoidal protrusion B upside down is introduced by the step part. The lid of the ultra-thin plastic container according to claim 1, wherein the lid is inserted into the back surface side of the container, and the two trapezoidal protrusions A of the container body are moored so as to come into contact with the engaging portion provided in the space of the lid. Fastening device.   When multiple containers are stacked with the lids connected at the hinges open, the two trapezoidal protrusions A and B in the next stage are inserted into the hollow trapezoidal protrusions at the previous stage, and the inclined surface is used. 2. The cap apparatus for an ultra-thin plastic container according to claim 1, wherein the apparatus is slid and closely stacked.

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