JP5647341B2 - Insulated container - Google Patents

Description

  INDUSTRIAL APPLICABILITY The present invention relates to a cup-shaped container, more specifically an instant food that can be heated and eaten, and in particular, an insulated container suitable for a cup-shaped container that wraps instant food that can be consumed by pouring hot water or heating in a microwave oven. About.

  Conventionally, it has a container body having a body wall and a bottom wall, and a sleeve fitted to the outer peripheral surface of the body wall of the container body, and the sleeve has a plurality of vertical directions within a certain range in the height direction. A plurality of slits for forming strip pieces are provided, and by sliding above or below the strip pieces of the sleeve, the plurality of strip pieces are bent or curved and protruded to the outer peripheral portion to form a heat insulating grip portion. As a container, the applicant of the present application has disclosed a patent No. 4294579 (Patent Document 1) and a patent No. 4391908 as a structure in which a strip piece is deformed into a heat-insulating gripping part by pushing up or down the sleeve using human force or the like. No. (Patent Document 2) has been proposed, and corresponding results have been achieved.

These insulated containers have a plurality of strips bent or curved, and projecting to the outer peripheral part to form a heat-insulating gripping part, so that the projecting part is separated from the container body, so that the projecting part is gripped from the outside. Even so, it is important that heat is not transmitted to the hand that is held, and it is required that a plurality of strips do not return to their original shapes.
Therefore, simply maintaining the sliding state of the sleeve by friction or gravity may cause the plurality of strips to return to their original shape when strongly gripped, which may reduce the heat insulation effect. Further, there is a risk that the protruding portion of the strip will be slipped off from the hand when gripped.
For this reason, in these known heat insulating containers, the strips are formed long in the height direction so that they can be folded irreversibly when sliding, or the protrusions are maintained as much as possible when gripped as a complicated fold shape. The above-mentioned problem has been reduced by adopting a configuration in which a separate member that is fixed to maintain the protrusion of the strip piece is added.

Japanese Patent No. 4294579 (all pages, all figures) Japanese Patent No. 4391908 (all pages, all figures)

However, in these known heat insulating containers, the structure and mechanism as described above makes it easy to heat and hold the sleeve by pushing up and down the sleeve and requiring extra movement. There was a problem that the part could not be formed.
Further, the provision of the structure and mechanism as described above has a problem that labor and cost for manufacturing and assembly are required.

  Therefore, the present invention solves the problems of the well-known heat insulating container as described above, and is easy to manufacture and assemble, the cost is reduced, and the heat insulating grip portion can be formed with a simple operation. The object of the present invention is to provide a heat-insulating container that can maintain a heat insulating effect reliably even if it is gripped from the top, maintains the heat insulating effect, and can be securely gripped without being deformed.

  The invention according to claim 1 includes a container body having a body wall and a bottom wall, and a sleeve fitted to the outer peripheral surface of the body wall of the container body, and the sleeve has a constant height direction. A plurality of slits forming a plurality of strips are provided in the vertical direction of the range, and by sliding above or below the strips of the sleeve, the plurality of strips bends or curves and protrudes to the outer peripheral portion. A heat insulating container formed with a heat insulating gripping part, wherein the plurality of strips have a first strip with an upper valley fold line at an upper end and an upper mountain fold line at an upper side, and a lower valley fold line at a lower end. And second strips having a lower mountain fold line in the vicinity of the lower part are alternately adjacent to each other, and at least one of the plurality of slits is a convex portion at an intermediate portion between the upper mountain fold line and the lower mountain fold line of the strips on both sides. And a bent portion forming a recess, and the bent portion By having a straight portion extending below is intended to solve the above problems.

  In the invention according to claim 2, in addition to the structure of the heat insulating container described in claim 1, the upper valley fold line and the lower valley fold line have an angle with respect to the horizontal. It is a solution.

  In the invention according to claim 3, in addition to the configuration of the heat insulating container described in claim 1 or 2, the straight portions of the plurality of slits have an angle with respect to the vertical, The problem is solved.

  In the invention according to claim 4, in addition to the structure of the heat insulating container described in claim 3, the straight portions of the plurality of slits are refracted at the positions of the upper mountain fold line and the lower mountain fold line. The problem is solved.

  In addition to the structure of the heat insulating container described in claim 1, the invention according to claim 5 is characterized in that two or more convex portions and concave portions of the strip piece are provided continuously in the vertical direction. The above-mentioned problem is solved.

  In addition to the structure of the heat insulating container described in claim 1, the invention according to claim 6 is a cut portion in which a strip on at least one side of the slit having the bent portion extends horizontally from the recess. By solving this problem, the above-mentioned problems are solved.

  The invention according to claim 7 solves the above-mentioned problem by the fact that the convex part and the concave part of the strip piece are formed in a sawtooth shape in addition to the configuration of the heat insulating container described in claim 1. It is.

  The heat insulating container according to the first aspect of the present invention includes a bent portion in which at least one of the plurality of slits forms a convex portion and a concave portion at an intermediate portion between the upper mountain fold line and the lower mountain fold line of the strips on both sides, and the bent When the strip is bent or curved and protrudes to the outer peripheral portion to form a heat-insulating gripping portion, the opposing convex portions of the strips on both sides are vertically Since it slides in the direction and is locked in the state of overcoming, the shape in which multiple strips protrude even when gripped from the outside is maintained, and the heat insulation effect is reliably maintained, and gripping is ensured without deformation. Is possible.

Further, since it is only necessary to provide the slit with a bent portion that forms a convex portion and a concave portion in the middle portion between the upper and lower fold lines of the strips on both sides, manufacturing and assembly are easy and cost is reduced. When the strip is bent or curved and protrudes to the outer peripheral portion to form the heat insulating grip portion, the opposing convex portion of the strip strip slides up and down without any other operation. Since it is locked, the heat-insulating gripping part can be easily formed only by the operation of sliding above or below the strip of the sleeve.

According to the configuration of the present invention, when the upper valley fold line and the lower valley fold line have an angle with respect to the horizontal, when the strip is bent or curved and protrudes to the outer peripheral portion, The height of the mountain fold line protrudes differently in the width direction, and the entire strip is tilted in the direction of the adjacent strip, so the convex portion approaches by setting it to tilt to the side where the convex portion and concave portion of the strip are formed In addition, when the strips are inclined, the opposing convex portions are locked with a larger angle.
As a result, the locking force is further increased, and even if the sleeve is thin, the protruding shape of the strip is surely maintained, the heat insulation effect is reliably maintained, and it is possible to securely grip without deformation. Become.
Further, since the thickness of the sleeve can be reduced, the cost is further reduced, and the operation of sliding the sleeve to bend or curve the strip piece and project it to the outer peripheral portion becomes easier.

According to the configuration of the third aspect, the straight portions of the plurality of slits have an angle with respect to the vertical, so that the strip pieces are adjacent to each other when the strip pieces are bent or curved and project to the outer peripheral portion. The side surfaces of the strips will approach or separate.
For this reason, by arrange | positioning the slit which has a bending part in the side which a strip piece approaches, the convex part which opposes approaches more, and a latching force becomes larger.
Also, by sliding in the rotational direction when sliding above or below the strips of the sleeve, the deformation stress when the strips protrude so as to tilt can be dispersed throughout without being concentrated locally. Therefore, the sliding operation of the sleeve becomes light, and the heat insulating grip portion can be easily formed.
In addition, since the strength of the sleeve can be reduced by dispersing the deformation stress, this also reduces the sliding operation of the sleeve and further reduces the manufacturing cost.

  According to the configuration of the fourth aspect of the present invention, since the straight portions of the plurality of slits are refracted at the positions of the upper mountain fold line and the lower mountain fold line, Since the amount of the adjacent strips approaching or separating can be adjusted more precisely by the refraction angle, the sleeve material and thickness, strips can be adjusted according to the required container form and application. The degree of freedom of design such as the shape of the material increases.

  According to the configuration of the fifth aspect of the present invention, two or more convex portions and concave portions of the strip pieces are provided continuously in the vertical direction, so that the opposing convex portions to be engaged are the strip pieces. Even when the strips are tilted or the side surfaces of adjacent strips are approached when they reach the engagement position while being overlapped in the thickness direction of the sleeve from the start of protrusion, the next recess Since the overlap is released by the convex portion on the side or becomes extremely small, the end edge of the convex portion can be easily locked.

According to the configuration of the sixth aspect of the invention, the strips on at least one side of the slit having the bent portion have the cut portions extending in the horizontal direction from the concave portions, so that the sleeves are formed above and below the cut portions. Since it can be easily deformed in the thickness direction, the convex and concave portions of the opposing strip pieces are deformed and displaced in the thickness direction, so that it can be easily moved in the vertical direction, and the projecting start of the strip pieces is smooth. Become.
In addition, when the side surfaces of adjacent strip pieces approach each other and the slide is completed, the cut portion is deformed even if the convex portions of the strip pieces remain overlapped with the concave portions of the opposing strip pieces in the thickness direction of the sleeve. It becomes possible to pass through and the opposing convex parts can be reliably locked.
For this reason, the degree of freedom of design such as the angle of the valley fold line, the angle with respect to the vertical direction of the slit, and the shape of the bent portion is further increased, and the position and angle at which the convex portions of the opposing strip pieces are locked can be optimized.

  According to the configuration of the seventh aspect of the present invention, since the convex portions and the concave portions of the strip pieces are formed in a sawtooth shape, the edge on the side where the convex portions of the strip pieces are locked is made horizontal, and the protrusion starts. By inclining the edges in the direction of relative movement sometimes, the strips start to project smoothly, and the locking force of the opposing convex portions when the projection is completed increases.

The side view of the heat insulation container which is 1st Example of this invention. FIG. 2 is a development view of the sleeve of FIG. 1. FIG. 3 is a partially enlarged view of FIG. 2. The side view in the slide of the heat insulation container of FIG. FIG. 5 is a partially enlarged view of FIG. 4. The side view at the time of the completion of a slide of the heat insulation container of FIG. FIG. 7 is a partially enlarged view of FIG. 6. The side view of the heat insulation container which is 2nd Example of this invention. FIG. 9 is a development view of the sleeve of FIG. 8. FIG. 10 is a partially enlarged view of FIG. 9. The side view in the slide of the heat insulation container of FIG. FIG. 12 is a partially enlarged view of FIG. 11. The side view at the time of the slide completion of the heat insulation container of FIG. FIG. 14 is a partially enlarged view of FIG. 13. The partially expanded view of the sleeve of the heat insulation container which is 3rd Example of this invention.

100, 200 ... heat insulating containers 110, 210 ... container main bodies 111, 211 ... trunk wall 113, 213 ... openings 112, 212 ... bottom walls 120, 220 ... sleeve 121, 221, 321 ... 1st strip piece 122, 222, 322 ... 2nd strip piece 123, 223, 323 ... upper valley fold line 124, 224, 324 ... upper mountain fold line 125, 225, 325 ..Lower valley fold line 126, 226, 326... Lower mountain fold line 127, 227, 327... Convex part 128, 228, 328... Concave part 129, 229, 329. ... Slits 131, 231 and 331 ... Bending parts 132, 232 and 332 ... Linear parts 233, 333 ... Notches
334 ・ ・ ・ Vertical portion

Below, the structure and operation | movement of the heat insulation container 100 which is 1st Example of this invention are demonstrated based on drawing.
FIG. 1 shows a schematic side view of a heat insulating container 100 according to a first embodiment of the present invention before use, a container body 110 having a body wall 111 and a bottom wall 112, and a body wall 111 of the container body 110. And a sleeve 120 fitted to the outer peripheral surface.
The sleeve 120 is fixed to the outer peripheral surface of the body wall 111 of the container body 110 only on the opening 113 side above the container, and a plurality of strips 121 and 122 are formed in the vertical direction within a certain range in the height direction. The slit 130 is provided.
The lowermost end of the sleeve 120 protrudes by a height H relative to the lowermost end of the container body 110, and is configured to be slidable upward while bending or curving the strip pieces 121 and 122 by this height. .

FIG. 2 shows a developed view of the sleeve 120, and FIG. 3 shows a partially enlarged view of the strips 121 and 122. As shown in these drawings, the plurality of strips 121 and 122 has a lower valley fold line at the lower end. The first strip 121 having the lower mountain fold line 126 near the lower part and the second strip piece 122 having the upper valley fold line 123 at the upper end and the upper mountain fold line 124 near the upper part are alternately adjacent to each other. .
Further, no folding line is provided at the uppermost part of the first strip 121 and the lowermost part of the second strip 122, and the upper folding line 124 above the lower mountain fold line 126 of the first strip 121 and the upper mountain fold line 124 of the second strip 122. By providing a center fold line 129 in the vertical direction further downward, the strength at the time of bending is increased.

The plurality of slits 130 are alternately arranged with a bent portion 131 and a straight portion 132 extending up and down the bent portion 131 and a slit made of only a straight line.
The bent portion 131 of the slit 130 forms a convex portion 127 and a concave portion 128 at an intermediate portion between the upper mountain fold line 124 and the lower mountain fold line 126 of the strip pieces 121 and 122 on both sides.
In the present embodiment, the slit 130 sandwiched between the left side of the first strip 121 and the right side of the second strip 122 as viewed from the front when the container is formed is used as the slit 130 having the bent portion 131.

As shown in FIG. 3, the convex portion 127 and the concave portion 128 formed by the bent portion 131 are, from above the second strip piece 122, the convex portion 127 (the concave portion 128 of the first strip piece 121) and the concave portion 128 (first portion). The convex pieces 127 of the strip pieces 121), the convex portions 127 (the concave portions 128 of the first strip pieces 121), and the concave portions 128 (the convex portions 127 of the first strip pieces 121) are alternately formed in the top and bottom portions.
The two convex portions 127 and the concave portion 128 are set to have the same height and depth from the line connecting the straight portions 132 extending vertically above the slit 130, and the height of the convex portion 127 of the second strip 122. The depth (depth of the recess 128 of the first strip 121) T is about 1.5 times the depth S of the recess 128 of the second strip 122 (height of the projection 127 of the first strip 121) S. Is set.

The operation | movement at the time of use of the heat insulation container 100 comprised as mentioned above is demonstrated.
The state in which the sleeve 120 is slid upward from the state before use shown in FIG. 1 is shown in FIGS. 4, 5, and 6. FIG. 6 is an enlarged view of FIG. 6, and FIG.
In the actual sliding operation, the lower end of the sleeve 120 may be placed on a horizontal plane, and the sleeve 120 may be slid above the strips 121 and 122 or pushed down the container body 110.
First, when the sleeve 120 is slid upward from the initial state, as shown in FIGS. 4 and 5, the first strip 121 is bent at the lower valley fold line 125 and the lower mountain fold line 126, and the upper end is curved and the outer periphery is bent. Further, the second strip 122 protrudes slightly in the outer circumferential direction with the upper valley fold line 123 and the upper mountain fold line 124 being bent and the lower end portion being curved.

At this time, the lower side of the upper mountain fold line 124 of the second strip 122 protrudes in the outer peripheral direction while sliding upward together with the sleeve 120 sliding upward.
Further, the upper side of the first strip 121 from the lower mountain fold line 126 protrudes in the outer peripheral direction without sliding.
At this time, as shown in FIGS. 4 and 5, the convex portions 127L1 and 127L2 on the left side of the first strip 121 and the convex portions 127R1 and 127R2 on the right side of the second strip 122 are the sleeve 120 They move relative to each other up and down while overlapping with the strips facing each other in the thickness direction.

The first strip 121 has a first recess 128L1, a first projection 127L1, a second recess 128L2, and a second projection 127L2 from above, and the second strip 122 has a first projection 127R1 from above. The first concave portion 128R1, the second convex portion 127R2, and the second concave portion 128R2 are provided.
These are formed by the bent portion 131 of one slit 130, and the first concave portion 128L1 and the first convex portion 127R1, the first convex portion 127L1 and the first concave portion 128R1, the second concave portion 128L2 and the second convex portion. The portion 127R2, and the second convex portion 127L2 and the second concave portion 128R2 have completely the same outer shape in the width direction.

By sliding the sleeve 120 upward from the initial state, the first convex portion 127R1 of the second strip 122 and the upper straight portion 132 of the slit 130 of the first strip 121 and the second strip in the thickness direction of the sleeve 120. The second convex portion 127R2 of the piece 122 and the first convex portion 127L1 of the first strip piece 121, the second convex portion 127L2 of the first strip piece 121 and the lower straight portion 132 of the slit 130 of the second strip piece 122, respectively. Move relative to each other in the vertical direction.
In addition, as shown in the figure, the convex portions 127 and the concave portions 128 of both strips 121 and 122 have a sawtooth shape in which the direction of sliding and overlapping has an angle with respect to the horizontal line, and the opposite direction is substantially horizontal. Since it is formed, each convex portion 127 can easily move and slide smoothly at the start of sliding.
In the drawing, the components of the second strip 122 are described so as to be all over, but are determined by various conditions such as the degree of application of force, and are not necessarily as illustrated.

When the slide is almost completed, as shown in FIGS. 6 and 7, the first convex portion 127 </ b> L <b> 1 of the first strip piece 121 becomes the second concave portion 128 </ b> R <b> 2 of the second strip piece 122 and the second convex portion of the second strip piece 122. 127R2 reaches the first concave portion 128L1 of the first strip piece 121, the overlapping of the sleeve in the thickness direction is released, and the first convex portion 127L1 of the first strip piece 121 and the second convex portion 127R2 of the second strip piece 122, The substantially horizontal end is locked.
At this time, since there is a slight gap in the adjacent portion between the first strip piece 121 and the second strip piece 122 protruding in the outer peripheral direction, the first convex portion 127L1 of the first strip piece 121 as shown in FIG. And the second convex portion 127R2 of the second strip piece 122 is overlapped with the second concave portion 128R2 of the second strip piece 122 and the first concave portion 128L1 of the first strip piece 121 with a slight margin in the horizontal direction. Thus, the first convex portion 127L1 of the first strip piece 121 and the second convex portion 127R2 of the second strip piece 122 are smoothly locked.
In the present embodiment, 12 pieces of the first strip piece 121 and 12 pieces of the second strip piece 122 are provided, so the first convex portion 127L1 of the first strip piece 121 and the second convex piece of the second strip piece 122 are provided. The portion 127R2 intersects at an angle of about 15 ° and is securely locked.

In this way, as shown in FIG. 6, the first convex portion 127L1 of the first strip piece 121 and the second convex portion 127R2 of the second strip piece 122 are locked, so that the sleeve 120 slides upward. Thus, the first strip piece 121 and the second strip piece 122 can be maintained in a state of protruding outward with the respective mountain fold lines 124 and 126 as vertices.
In this embodiment, every other slit 130 having the bent portions 131 is provided in the circumferential direction. However, the sleeve 120 slides upward so that the first strip piece 121 and the second strip piece 122 are outward. If it is possible to keep the protruding state, it is possible to provide a smaller number such as every other two, and all may be the slits 130 having the bent portions 131.

Next, the structure and operation | movement of the heat insulation container 200 which is 2nd Example of this invention are demonstrated based on drawing.
FIGS. 8 to 14 are drawings corresponding to FIGS. 1 to 7 relating to the first embodiment of the present invention, and the reference numerals of the respective components are set to 2 in the hundreds of the corresponding components of the first embodiment. It has become a thing.
As shown in FIG. 8, a heat insulating container 200 according to the second embodiment of the present invention includes a container body 210 having a body wall 211 and a bottom wall 212, and a body of the container body 210, as in the first embodiment. And a sleeve 220 fitted to the outer peripheral surface of the part wall 211.
The sleeve 220 is fixed to the outer peripheral surface of the body wall 211 of the container main body 210 only on the opening 213 side above the container, and a plurality of sleeves 221 and 222 are formed in the vertical direction within a certain range in the height direction. Slit 230 is provided.
The lowermost end of the sleeve 220 protrudes by a height H with respect to the lowermost end of the container body 210, and is configured to be slidable upward while bending or curving the strip pieces 221 and 222 by this height. .

As shown in FIGS. 9 and 10, the plurality of strip pieces 221 and 222 include a first strip piece 221 having a lower valley fold line 225 at the lower end and a lower mountain fold line 226 near the lower side, and an upper valley fold line 223 at the upper end. And second strips 222 having upper mountain fold lines 224 in the vicinity of the upper part are alternately adjacent to each other.
In addition, no folding line is provided at the uppermost part of the first strip piece 221 and the lowermost part of the second strip piece 222, but above the lower mountain fold line 226 of the first strip piece 221 and the upper mountain fold line 224 of the second strip piece 222. By providing a center fold line 229 in the vertical direction further downward, the strength at the time of bending is increased.
The upper valley fold line 223, the upper mountain fold line 224, the lower valley fold line 225, and the lower mountain fold line 226 are provided with an inclination of α ° with respect to the horizontal.

The plurality of slits 230 are alternately arranged with a bent portion 231 and a straight portion 232 extending above and below the bent portion 231, and a slit made of only a straight line. The pieces 221 and 222 are provided to be inclined so as to be shifted by one pitch P.
The bent portion 231 of the slit 230 forms a convex portion 227 and a concave portion 228 at an intermediate portion between the upper mountain fold line 224 and the lower mountain fold line 226 of the strip pieces 221 and 222 on both sides.
In the present embodiment, the slit 230 sandwiched between the left side of the first strip 221 and the right side of the second strip 222 as viewed from the front when the container is formed is a slit 230 having a bent portion 231.
Since the upper valley fold line 223, the upper mountain fold line 224, the lower valley fold line 225, and the lower mountain fold line 226 are similarly inclined by α ° with respect to the horizontal, the slit 230 having the bent portion 231 is short and consists of only a straight line. It will be alternately arranged so that things may become long.

As shown in FIG. 10, the convex portion 227 and the concave portion 228 formed by the bent portion 231 are, from above the second strip piece 222, the convex portion 227 (the concave portion 228 of the first strip piece 221) and the concave portion 228 (first portion). Convex portions 227 of the strip pieces 221), convex portions 227 (the concave portions 228 of the first strip pieces 221), and concave portions 228 (the convex portions 227 of the first strip pieces 221) are formed alternately two each in the vertical direction.
The two convex portions 227 and the concave portions 228 on the second strip piece 222 side are set so that the dimensions from the line connecting the straight portions 232 extending up and down of the slit 230 are the same height and depth T, respectively. The two convex portions 227 and the concave portions 228 on the first strip 221 side are set so that the dimension from the line connecting the straight portions 232 extending up and down of the slit 230 is S and the lower is S2 larger than that. Has been.
In this embodiment, T and S are equal, and S2 is set to 2.5 times S.

Furthermore, a notch 233 that extends horizontally from the apex of the convex portion 227 (the recess 228 of the first strip 221) above the second strip 222 to the first strip 221 side is provided, and the tip that further extends horizontally It is formed in an L shape extending upward.
In the present embodiment, the cut portion 233 extends horizontally from the line connecting the straight portions 232 extending above and below the slit 230 to a distance of K, and K is set to be approximately twice T.
The dimensional relationship between T, S, S2, and K is that the upper valley fold line 223, the upper mountain fold line 224, the lower valley fold line 225, and the lower mountain fold line 226 are inclined with respect to the horizontal, and the first strip 221 and the The two strips 222 are appropriately set appropriately in consideration of the relative approach amount.

The operation | movement at the time of use of the heat insulation container 200 comprised as mentioned above is demonstrated.
First, when the sleeve 220 is slid upward from the initial state, as shown in FIG. 11 and FIG. 12, the first strip 221 is bent at the lower valley fold line 225 and the lower mountain fold line 226 and curved at the upper end. Further, the second strip piece 222 projects slightly in the outer peripheral direction with the lower valley portion being bent and the upper valley fold line 223 and the upper mountain fold line 224 being bent.

At this time, the lower side of the upper mountain fold line 224 of the second strip piece 222 protrudes in the outer circumferential direction while sliding upward with the sleeve 220 sliding upward.
In addition, the upper side of the lower mountain fold line 226 of the first strip 221 protrudes in the outer peripheral direction without sliding.
As shown in FIGS. 11 and 12, the convex portions 227L1 and 227L2 on the left side of the first strip 221 and the convex portions 227R1 and 227R2 on the right side of the second strip 222 are the thickness of the sleeve 220. They move relative to each other up and down while overlapping with opposite strips that are offset in the direction.
Since the upper valley fold line 223, the upper mountain fold line 224, the lower valley fold line 225, and the lower mountain fold line 226 are provided with an inclination of α ° with respect to the horizontal, the bent portion 231 side of the upper mountain fold line 224 and the lower mountain fold line 226 It protrudes higher and tilts towards the side closer to each other.
Further, the slit 230 is provided so that the lower end thereof is inclined with respect to the upper end so as to be shifted by one pitch P of the strip pieces 221, 222. Therefore, the convex portion and the concave portion of the first strip piece 221 and the second strip piece 222 are provided. The side on which is formed approaches relatively as it slides.

The first strip 221 has a first recess 228L1, a first projection 227L1, a second recess 228L2, and a second projection 227L2 from above, and the second strip 222 has a first projection 227R1 from above. The first concave portion 228R1, the second convex portion 227R2, and the second concave portion 228R2 are provided.
These are formed by the bent portion 231 of one slit 230, and the first concave portion 228L1, the first convex portion 227R1, the first convex portion 227L1, the first concave portion 228R1, the second concave portion 228L2, and the second convex portion. The portion 227R2, and the second convex portion 227L2 and the second concave portion 228R2 have the same outer shape in the width direction.

By sliding the sleeve 220 upward from the initial state, in the thickness direction of the sleeve 220, the first convex portion 227R1 of the second strip 222 is placed on the upper straight portion 232 of the slit 230 of the first strip 221. The second convex portion 227R2 of the second strip piece 222 is below the first convex portion 227L1 of the first strip piece 221, and the second convex portion 227L2 of the first strip piece 221 is the lower straight line of the slit 230 of the second strip piece 222. Overlapping the part 232 moves relative to each other.
In addition, as shown in the figure, the convex portions 227 and the concave portions 228 of both strips 221 and 222 have a sawtooth shape in which the direction of sliding and overlapping has an angle with respect to the horizontal line, and the opposite direction is substantially horizontal. Since it is formed, each convex portion 227 can easily move and slide smoothly at the start of sliding.

When the slide is almost completed, as shown in FIG. 13 and FIG. 14, the first convex portion 227L1 of the first strip piece 221 enters the second concave portion 128R2 of the second strip piece 222 and the second convex portion of the second strip piece 222. 227R2 reaches the first concave portion 228L1 of the first strip piece 221 and the overlap in the thickness direction is released, and the first convex portion 227L1 of the first strip piece 221 and the second convex portion 227R2 of the second strip piece 222 are substantially horizontal. The end of is locked.
At this time, the adjacent portion of the first strip 221 and the second strip 222 protruding in the outer peripheral direction approaches due to the inclination of the upper mountain fold line 224, the lower valley fold line 225, and the lower mountain fold line 226 with respect to the horizontal, or the inclination of the slit 230. Therefore, the first convex portion 227L1 of the first strip piece 221 and the second convex portion 227R2 of the second strip piece 222 are the same as the second concave portion 228R2 and the first strip piece of the second strip piece 222. There is a possibility that the overlap with the first recess 228L1 of 221 is not released.
However, by appropriately setting the dimension of S2 and the length K of the notch 233 described above, the overlap is smoothly released, and the first convex portion 227L1 of the first strip 221 and the second strip 222 are The second convex portion 227R2 is smoothly locked.
In this embodiment, 12 pieces of the first strip piece 221 and the second strip piece 222 are provided, so that the first convex portion 227L1 of the first strip piece 221 and the second convex piece of the second strip piece 222 are provided. The portion 227R2 intersects at an angle of about 15 ° in a flat state, and the sides of the first strip piece 221 and the second strip piece 222 on which the convex portion 227 and the concave portion 228 are formed protrude higher. By adding the angle by, it is locked more reliably.

In this way, as shown in FIG. 13, the first convex portion 227L1 of the first strip piece 221 and the second convex portion 227R2 of the second strip piece 222 are locked, so that the sleeve 220 slides upward. Thus, the first strip piece 221 and the second strip piece 222 can be held in a state of protruding outward with the respective mountain fold lines 224 and 226 as apexes.
In this embodiment, every other slit 230 having the bent portion 231 is provided in the circumferential direction, but the sleeve 220 slides upward so that the first strip 221 and the second strip 222 are outward. As long as it is possible to maintain the protruding state, it is possible to provide a smaller number such as every other two.

Next, the structure of the heat insulation container 300 which is 3rd Example of this invention is demonstrated.
FIG. 15 is a drawing corresponding to FIG. 10 relating to the second embodiment of the present invention, and the reference numerals of the respective components are set to 3 in the hundreds of the corresponding components of the second embodiment.
Since the heat insulation container which is 3rd Example of this invention is the same as that of 2nd Example except the shape of the slit 330 shown in FIG. 15, description except the part which is different from 2nd Example is abbreviate | omitted.
As shown in FIG. 15, the plurality of strip pieces 321 and 322 have a first strip piece 321 having a lower valley fold line 325 at the lower end and a lower mountain fold line 326 near the lower side, and an upper valley fold line 323 at the upper end. The second strips 322 having the upper mountain fold lines 324 are alternately adjacent to the upper part.
Further, no folding line is provided at the uppermost part of the first strip piece 321 and the lowermost part of the second strip piece 322, but above the lower mountain fold line 326 of the first strip piece 321 and the upper mountain fold line 324 of the second strip piece 322. By providing a center fold line 329 in the vertical direction further downward, the strength at the time of bending is increased.
The upper valley fold line 323, the upper mountain fold line 324, the lower valley fold line 325, and the lower mountain fold line 326 are provided with an inclination of α ° with respect to the horizontal.

The plurality of slits 330 include a bent portion 331, a straight portion 332 extending up and down the bent portion 331 and inclined with respect to the vertical, and a vertical portion 334 extending above the upper mountain fold line 324 and below the lower valley fold line 325. And those composed only of a straight line inclined between the upper and lower vertical portions 334 are alternately arranged.
That is, the slit 330 of the present embodiment is different from the slit 230 of the second embodiment in that the straight portion is refracted at the position of the upper mountain fold line 324 and the lower mountain fold line 326.
By this refraction, the amount of inclination when the strips 321 and 322 protrude so as to tilt and the amount when the side surfaces of the adjacent strips 321 and 322 approach or separate from each other can be further finely adjusted by the refraction angle. Therefore, the degree of freedom in design such as the material and thickness of the sleeve, the shape of the strip, and the like increase in accordance with the required form and application of the container.

  The heat insulating container of the present invention is easy to manufacture and assemble, reduces cost, can form the heat insulating gripping part with a simple operation, and maintains the protrusion of the strip piece even when gripped from the outside. Since it can be reliably held and securely gripped without being deformed, it can be suitably used as a cup-shaped container for packaging instant foods that are poured into hot water or heated in a microwave oven. In addition, since the appearance can be changed to a design characteristic by a simple operation, the present invention is not limited to the original use of heat insulation, and can be used for various cup-shaped containers.

Claims (7)

A container body having a body wall and a bottom wall; and a sleeve fitted to the outer peripheral surface of the body wall of the container body;
The sleeve is provided with a plurality of slits that form a plurality of strips in the vertical direction within a certain range in the height direction,
By sliding an upper part or a lower part from the strip pieces of the sleeve, the plurality of strip pieces are bent or curved, and projecting to the outer peripheral part to form a heat insulating grip part,
A plurality of strip pieces, a first strip piece having an upper valley fold line at the upper end and an upper mountain fold line in the upper vicinity; a second strip piece having a lower valley fold line at the lower end and a lower mountain fold line in the lower vicinity; Are alternately adjacent,
At least one of the plurality of slits has a bent portion that forms a convex portion and a concave portion in an intermediate portion between the upper mountain fold line and the lower mountain fold line of the strips on both sides, and a linear portion that extends above and below the bent portion. Insulated container characterized by that.   The heat insulation container according to claim 1, wherein the upper valley fold line and the lower valley fold line have an angle with respect to the horizontal.   The heat insulating container according to claim 1, wherein the straight portions of the plurality of slits have an angle with respect to the vertical.   The heat insulating container according to claim 3, wherein straight portions of the plurality of slits are refracted at positions of an upper mountain fold line and a lower mountain fold line.   The heat insulation container according to claim 1, wherein two or more convex portions and concave portions of the strip pieces are provided continuously in the vertical direction.   The heat insulating container according to claim 1, wherein the strip on at least one side of the slit having the bent portion has a cut portion extending in the horizontal direction from the recess.   The heat insulation container according to claim 1, wherein the convex portions and the concave portions of the strip pieces are formed in a sawtooth shape.

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