JP3961208B2 - Plastic bottle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a crushable plastic bottle.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 11-321835 discloses that a large-bore plastic bottle having a handle is crushed and flattened, and the flattened waste bottle is rounded to obtain a rounded waste bottle having a very small capacity. It is known from the past.
Further, it is in accordance with the application of the present applicant that a locking piece protrudes from the peripheral wall of the bottom of the bottle, and the locking piece is locked to the locking portion of the cap fastened to the bottle mouth. This is proposed in Japanese Patent Application No. 11-288588.
[0003]
[Problems to be solved by the invention]
However, when the locking piece is provided on the bottom peripheral wall, the locking piece protrudes from the bottom peripheral wall. The problem was that the pieces were caught.
In addition, since bottles are lined up and sold in stores without being sealed and wrapped, there is a possibility that during the display of goods, the act of falsifying the locking piece intentionally or accidentally and folding it with force is performed. there were.
In addition, when the bottle is carried or used, if the bottom of the bottle is struck against the corner, the locking piece may break.
[0004]
In view of these problems, the present invention provides a crushable plastic bottle in which a counterbored portion is provided on the bottom peripheral wall so that the locking piece does not protrude from the bottle surface, and the locking piece is reinforced. Objective.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is provided with a mouth portion, a trunk portion, and a bottom portion as a plastic bottle that can be crushed and rolled into a waste disposal bottle. A bottle with a hinged cap attached and a bending rib provided at a required part of the barrel so that the barrel can be crushed and deformed. The bottom of the bottle is the bottom of the bottom of the bottle The bottom peripheral wall, which is the opposite side of the hinge of the hinged cap attached to the bottle, is provided with a counterbore from the middle of the bottom peripheral wall to the bottom end wall. The locking piece provided with the flange at the tip that engages with the arc-shaped locking member connected via the connecting piece near both sides of the hinge of the cap base is disposed so as to be positioned in the bore portion. Adopt a featured configuration.
[0006]
In the bottle provided with the handle, the bottle is provided with a handle, and a bending portion is formed on the handle so that the handle can be bent. The structure is characterized in that the locking piece is formed in a cross-section H steel shape in which a concave portion is formed in the center and the peripheral portion is surrounded by a reinforcing portion having a certain width.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, a first embodiment of the present invention will be described with reference to the drawings.
1 and 2, A is a bottle having a mouth portion 1 and a body portion 2, a bottom portion 3 and a handle 4 formed so as to cut out the body portion 2, B is a hinged cap, and B1 is a cap. The base body B2 is an opening / closing lid attached to the cap base body B1 by a hinge B3 of a three-point hinge type.
For the bottle A and the cap B, a polyolefin-based resin or other synthetic resin is used, and the bottle A is blow-molded as a single layer or a laminate.
[0008]
On the outer periphery of the mouth portion 1, a fitting ring 5 for attaching the cap B and a pair of holding protrusions 6 arranged to face each other with a certain distance are provided.
[0009]
The torso 2 is composed of an upper torso 7 having a handle 4 and a circular lower torso 8, and the upper torso 7 has a spherical shoulder wall 9 following the mouth 1, and the shoulder wall 9. The following cross section consists of a substantially square body peripheral wall 10 and a circular bulging peripheral wall 11.
[0010]
As shown in FIGS. 1, 3, and 4, the trunk peripheral wall 10 has a cross-sectional shape obtained by removing the handle forming hole 12 from a regular octagonal cross section, and between the shoulder wall 9 and the bulging peripheral wall 11. Five side walls 13 a, b, c, d, and e and a curved wall 14 are provided continuously.
Each wall surface of the side wall 13 is formed by a curved surface slightly curved in the vertical direction, and is connected to the adjacent side wall by a connection edge 15.
[0011]
The side walls 13 d and e adjacent to the curved wall 14 are connected to the curved wall 14 by the arc edge 16.
The center of the curved wall 14 is a curved surface that is slightly curved in the vertical direction at a predetermined interval from the axis of the bottle, and is formed by a curved surface having an arc extending in the front-rear direction around the curved shape. ing.
[0012]
A lateral rib 17 is disposed substantially in the middle of the curved wall 14 and extends to the front and rear walls 13d, e adjacent to the curved wall 14 with a central portion therebetween.
Below the curved wall 14 is a wall surface 18 that extends to the lower surface of the handle forming hole 12, is connected to the bulging peripheral wall 11, and covers the right portion of the lower body portion 8.
[0013]
As shown in FIGS. 1, 2, and 4, the handle 4 faces the curved wall 14, separates the handle forming hole 12, and extends from the upper end of the shoulder wall 9 and the curved wall 14 to the wall surface 18 around the bulging peripheral wall 11. The cross section is formed in the shape of a crescent moon having a cross section in which the inner side and the outer side are circular arcs having different diameters throughout.
[0014]
An intermediate bulging portion 19 that is curved and bulged on both sides of the handle is formed in the middle portion of the handle 4 in the longitudinal direction, and a step is formed between the upper side and the lower side on the front side of the intermediate bulging portion 19. A crescent-shaped step wall 20 is formed.
On the inner side of the upper end of the handle 4, an arc-shaped lower rib 21 is disposed along the connecting portion with the curved wall 14.
[0015]
As shown in FIGS. 1 and 2, the lower body portion 8 includes a circular barrel wall 22 continuing to the bulging circumferential wall 11 with a step, and a bottom circumferential wall 23 formed so as to bulge from the barrel wall 22. It has become.
In the center of the front and rear surfaces of the barrel tube wall 22, vertical ribs 24 are arranged to extend downward from the upper end of the barrel tube wall 22, and the inclined ribs 25 a and b extend from the lower end to the left and right from a position spaced apart from the lower end. Is disposed and extends to an intermediate portion of the bottom peripheral wall 23.
[0016]
On the handle side peripheral surface 22b of the barrel wall 22, an arcuate rib 26 having an arcuate point connecting the upper end of the vertical rib 24 and having the center point on the handle side peripheral surface as the lowest point is disposed. Horizontal ribs 27 are disposed in the horizontal direction at a certain interval from the lower end of 24.
In the barrel wall 22, wide concave grooves 28 are arranged at equal intervals in the vertical direction across the center of the front and rear surfaces.
[0017]
The transverse ribs 17 and 27, the lower rib 21, the longitudinal ribs 24, the inclined ribs 25a and 25b, and the arc-shaped ribs 26 are arc-shaped crushing deformation bending ribs. Is deformed, the connecting portion with the wall surface is bent, and the wall surfaces on both sides are easily bent inward or outward with the bending rib as an axis.
When the bending angle increases, plastic deformation occurs beyond the elastic limit at the connecting portion of the bending rib or the arc portion, and the deformed shape can be maintained.
[0018]
As shown in FIGS. 5, 6, and 7, the bottom portion 3 includes a bottom wall 30 and a bottom end wall 31 that is formed on the periphery of the bottom wall 30 and continues to the bottom peripheral wall 23 of the trunk portion 2.
On the left side surface of the bottom peripheral wall 23, there is a counterbored portion 32 extending from the middle portion to the bottom end wall 31, and the bottom end portion 33 of the counterbored portion 32 is located inside the ground end of the bottom end wall 31, A locking piece 35 having a flange 34 as a distal end extending in a substantially horizontal direction outward from the bottom end 33 along the parting line is provided.
As shown in FIG. 8, the base portion of the locking piece 35 is located in contact with the bottom end portion 33, and the flange portion 34 is disposed so as to be located inside the peripheral surface of the bottom peripheral wall 23 and protrudes upward. It is formed as follows.
[0019]
Concave portions 36a and 36b are formed in the central portion of the locking piece 35, and the peripheral edge portion is surrounded by a reinforcing portion having a constant width.
As shown in FIG. 8B, the cross-sectional shape of the locking piece 35 is an H steel shape throughout.
[0020]
Next, the cap B will be described.
In FIG. 9, B is a hinge-type cap, B1 is a cap base, and B2 is an open / close lid attached to the cap base B1 by a hinge B3 of a three-point hinge type.
The cap base B <b> 1 includes a fitting portion including an outer cylinder 40, an inner cylinder 41, and an upper wall 42, and a dispensing cylinder 43 erected on the upper wall 42 so as to extend above the inner cylinder 41.
A partition wall 44 extending inward from the upper wall 42 is provided below the dispensing cylinder 43, and an engagement ring 45 is erected near the periphery of the upper wall 42.
[0021]
Like the known cap, a tear groove 47 is formed on the lower surface of the partition wall 44, and a finger ring 48 is erected on the upper surface of the partition wall 44 inside the tear groove 47. By pulling up the finger ring 48, the tear groove 47 can be torn and the extraction hole 46 can be formed in the partition wall 44.
[0022]
An engagement protrusion 49 that engages with the fitting ring 5 of the bottle mouth portion 1 is formed on the inner periphery of the outer cylinder 40, and an arc-shaped locking member 50 is formed on the outer peripheral upper end edge of the outer cylinder 40. The outer cylinder 40 is continuous with a connecting portion 51 that acts as a rotating shaft and a severable connecting piece 52.
As shown in FIG. 10, the connecting portion 51 is disposed at a predetermined interval from the hinge B <b> 3, and a plurality of connecting pieces 52 are provided at a predetermined interval from the connecting portion 51.
[0023]
The connecting piece 52a adjacent to the connecting portion 51 connects the locking member 50 to the outer cylinder 40 from the upper end edge to the lower end edge of the locking member 50. The other connecting pieces 52 are shown in FIG. As shown in FIG. 4, the connection is made partially along the upper edge.
The connecting member 52 supports the locking member 50 along the periphery of the outer cylinder 40 before opening the lid.
[0024]
On the opposite side of the hinge B3, the arc of the locking member 50 is expanded and a latching portion 53 is provided.
The hooking portion 53 extends upward from the upper end of the outer cylinder, and a hooking piece 54 having an upper end protruding inward and an inclined surface is formed at the center.
[0025]
The open / close lid B <b> 2 includes a side cylinder wall 55 that fits into the engagement ring 45, and a top wall 57 that is provided with a sealing ring 56 that seals the extraction cylinder 43.
A knob 58 is provided on the edge of the side cylinder wall 55 opposite to the hinge B3.
[0026]
When capping after filling the content liquid, the lid is closed so that the hinge is on the right side of the bottle.
At that time, the knob 58 of the opening / closing lid B2 is moved over the inclined surface of the hook 54 of the cap base B1 and closed.
Then, when trying to open the lid, the pick piece 58 pulls the hook piece 54 and the connecting piece 52 is cut.
For this reason, when the bottles filled with the content liquid are lined up at the storefront or opened intentionally or accidentally, the connecting piece 52 is cut and the latching portion 53 is raised, so that an illegal act is not performed. It is possible to easily identify whether or not this has been done.
[0027]
When the bottle is used, when the open / close lid B2 is opened and the finger ring 48 is pulled up, the pouring hole 46 is opened and the content liquid can be poured out.
Simultaneously with the opening of the lid, the engaging member 50 is rotated about the connecting portion 51 as a rotating shaft, with the connecting piece 52 cut off.
[0028]
Next, when the locking member 50 is rotated with the latching portion 53 in the closed state, the inner diameter of the locking member 50 is larger than the outer diameter of the opening / closing lid B1, and the locking member 50 is Due to the elasticity, the latching portion 53 moves toward the outside, and the locking member 50 can be rotated around the connecting portion 51 to the outside of the opening / closing lid B2.
Next, when the latching portion 53 is picked and the front and back are reversed, as shown in FIG. 11, the locking member 50 is folded at the connecting piece 52a and reversed, and thereafter, the opening / closing lid B2 is opened and closed. The state can be maintained.
[0029]
Next, the crushing method of a bottle is demonstrated easily with reference to drawings.
When discarding the bottle after use, the bottle is flattened with the opening / closing lid B2 of the cap B open, and then the flattened bottle is used as a rounded waste bottle.
In crushing the bottle, as described in Japanese Patent Application Laid-Open No. 11-321835, first, the intermediate portion of the handle 4 is pressed to bend the handle 4 and to deform the trunk peripheral wall 10.
[0030]
Next, when a portion above the barrel tube wall 22 is pressed and then a portion below the barrel tube wall 22 is pressed, the handle side peripheral surface 22b is bent with the arc-shaped ribs 26 as folds, and the handle side portion of the bulging peripheral wall 11 Is bent with the lateral rib 27 as a fold, and the bottom peripheral wall 23 is inclined accordingly.
Then, the left peripheral surface 22a and the handle side peripheral surface 22b of the barrel tube wall 22 are bent with the vertical rib 24 as an axis so that the barrel tube wall 22 is flattened, and the vertical rib 24 protrudes forward and backward accordingly. become.
[0031]
The flattening of the trunk cylinder wall 22 affects the trunk peripheral wall 10 of the upper trunk portion 7, and the trunk peripheral wall 10 is bent at the connecting edge 15 between the side wall 13 b (c) and the side wall 13 d (e). Bulge out.
[0032]
Next, when the bottom portion 3 is bent upward, the bottom portion 3 is bent by the lateral ribs 27 of the handle side peripheral surface 22b, and the bottom wall 30 is further inclined.
Thus, the body part 2 becomes a flat body part 2a, and a flat bottle as shown in FIG. 12 can be obtained.
At that time, plastic deformation is caused in other portions as well as the bent and bulged portions, the flat state is maintained, and it can be discarded in this state.
[0033]
Next, holding the mouth part 1 and the bottom part 3, bending the whole bottle and applying a moment between the mouth part 1 and the bottom part 3, the bottom part 3 is further pressed and flattened, The horizontal rib 17 is bent as an axis, and the handle 4 is bent accordingly.
The handle 4 is further bent at the portions of the lower rib 21 and the step wall 20, and the lower end portion of the step wall 20 widens the intermediate bulging portion 19 in the width direction to cause plastic deformation. Is flattened and the back surface of the stepped wall 20 is brought into contact with the curved wall 14 of the trunk peripheral wall 10.
[0034]
Next, when a moment is further applied to round the mouth portion 1 and the bottom peripheral wall 23, the upper and lower portions of the flat barrel portion 2a are further bent so that the bottom portion 3 is brought close to the opening / closing lid B2 and When the stopper piece 35 is inserted into the locking member 50, the locking piece 35 pulls the hooking portion 53 by the restoring force of the flat body portion 2a, and the arc-shaped locking member 50 becomes a triangular shape. And the engaged state between the bottle bottom 3 and the cap B is maintained, and a rounded waste bottle can be obtained as shown in FIG.
[0035]
In flat crushing, the flat barrel portion 2a is plastically deformed and is not restored unless an external force is applied. However, the curvature of the flat barrel portion 2a may not lead to plastic deformation. By locking, the flat body 2a that is curved and rounded at the time of disposal is prevented from being restored.
Thus, the flat bottle as shown in FIG. 12 can be a waste bottle rounded to a very small capacity as shown in FIG.
[0036]
Next, a second embodiment will be described.
The above embodiment relates to a plastic bottle with a handle. Next, a large-bore plastic bottle without a handle will be described.
In FIG. 14, Aa is a bottle and B is a cap described in the above embodiment.
The main points will be described below, focusing on the differences.
[0037]
As shown in FIGS. 14 and 15, the bottle Aa includes a mouth portion 60, a shoulder portion 61, a trunk portion 62, and a bottom portion 63, and the trunk portion 62 includes a trunk peripheral wall 64 and a bottom peripheral wall 65 having a circular cross section. Is formed.
Longitudinal ribs 66 are disposed on the center line on the front and rear surfaces of the trunk peripheral wall 64, and the lower ends of the longitudinal ribs 66 are obliquely downward with a certain distance from the lower rib ends as in the previous embodiment. An inclined rib 67 extending to the bottom peripheral wall 65 and a lower horizontal rib 68 extending in the lateral direction on the right side surface of the trunk peripheral wall 64 are disposed.
[0038]
An upper horizontal rib 69 and a middle horizontal rib 70 extending in the horizontal direction of the trunk peripheral wall 64 are disposed on the trunk peripheral wall 64 with a certain distance from the vertical rib 66.
Each said rib is corresponded to the bending rib in previous embodiment, and has the same effect.
A concave groove 71 similar to the concave groove 28 of the first embodiment is disposed between the ribs.
[0039]
The bottom portion 63 has the same configuration as that of the previous embodiment, and includes a bottom wall 72 and a bottom end wall 73, and a bottom peripheral wall 65 on the front side is formed with a counterbore portion 74 extending from the middle to the bottom end wall 73. Yes.
The bottom end portion 75 of the bore portion 74 is located on the inner side of the ground end of the bottom end wall 73, and the bottom end portion 75 is provided with a hook portion 76 provided at the tip that extends outward along the parting line. A piece 77 is provided.
[0040]
The locking piece 77 is disposed so that its root portion is in contact with the bottom end portion 75, and the flange portion 76 is disposed inside the peripheral surface of the bottom peripheral wall 65, and is formed to protrude upward.
The shape of the locking piece 77 is the same as the locking piece 35 of the previous embodiment, and as shown in FIG. 8, the cross-sectional shape is an H steel shape.
[0041]
In crushing the bottle after use, first, when the upper portion of the barrel peripheral wall 64 is pressed from the left and right, the barrel peripheral wall 64 is expanded in the front-rear direction by the upper horizontal rib 69 and bent around the vertical rib 66.
Next, when the middle part of the trunk circumferential wall 64 is pressed from the left and right, the middle part of the trunk 62 is pushed and expanded in the front-rear direction by the middle lateral rib 70 and bent about the longitudinal rib 66, and accordingly above the trunk circumferential wall 64. The part is also deformed and flattened.
[0042]
Next, when the lower portion of the trunk peripheral wall 64 is pressed from the left and right, the trunk peripheral wall 64 is pushed and expanded in the front-rear direction by the lower lateral rib 68, and the left and right trunk walls of the trunk portion 62 are deformed with the vertical rib 66 as a boundary. As shown in FIG. 4, the entire body portion is a flat body portion 62a.
At the same time, the bottom peripheral wall 65 is widened back and forth by the inclined rib 67, and the left and right peripheral walls are connected to the body peripheral wall 64 and inclined with the lower lateral rib 68 as an axis.
Next, when the right side surface of the bottom 63 is rotated upward, a flattened waste bottle can be obtained as in the above embodiment.
[0043]
Next, when the whole bottle is bent with the mouth portion 60 and the bottom portion 63 and a moment is applied between the mouth portion 60 and the bottom portion 63, the flat body portion 62 a is bent by the upper lateral rib 69 and the middle lateral rib 70. A rounded waste bottle as shown in FIG. 17 is obtained by engaging a locking piece 77 having a flange 76 that is deformed and finally provided on the bore 74 with the locking member 50 of the opening / closing lid B2. Can do.
[0044]
In the above embodiment, the locking member is disposed on the cap base body, but may be provided on the opening / closing lid.
In each of the above embodiments, the locking piece at the bottom is engaged with the locking portion provided on the cap. However, when the material resin of the bottle and the material resin of the cap are different, a cap base is known. It removes from a container mouth part by a method, and makes a latching piece engage with a container mouth inner periphery.
[0045]
In each of the above embodiments, a circular bottle has been described as a plastic bottle. However, as long as the barrel can be crushed, the cross-sectional shape of the bottle may be elliptical, rectangular, or other shapes.
[0046]
【The invention's effect】
Since this invention is comprised as mentioned above, there exists the following effect.
By crushing the body part to obtain a flat waste bottle, and engaging the locking piece provided on the bottom of the bottle with the locking member of the cap fitted to the bottle mouth, Obtainable.
Since the locking piece is disposed so as to be located in the bore portion of the bottom peripheral wall, it does not engage with the locking piece of other bottles, and the locking piece has an H-steel shape. Even if the strength is improved and the locking piece may break from the root due to negligence, the content liquid will not leak because the root is solid.
[Brief description of the drawings]
FIG. 1 is a front view of a bottle and a cap according to a first embodiment of the present invention.
FIG. 2 is a side view of the bottle.
FIG. 3 is a top view of the bottle.
4 is a cross-sectional view of the bottle taken along the line AA in FIG. 2. FIG.
FIG. 5 is a bottom view of the bottle.
FIG. 6 is a left side view of the bottom of the bottle.
FIG. 7 is a longitudinal sectional view of the bottom of the bottle.
8A and 8B are explanatory diagrams of the locking piece, where FIG. 8A is an elevation view of the locking piece, and FIG. 8B is a cross-sectional view taken along line AA in FIG.
9A and 9B are explanatory diagrams of the cap, in which FIG. 9A is a front view when the lid is closed, and FIG. 9B is a longitudinal sectional view when the lid is opened.
10A and 10B are explanatory views of the cap, wherein FIG. 10A is a plan view when the lid is opened, and FIG. 10B is a partial cross-sectional left side view of the cap base body.
11A and 11B are explanatory views of the cap locking member when deformed, where FIG. 11A is a front view and FIG. 11B is a top view.
FIG. 12 is an explanatory diagram of a flat bottle.
FIG. 13 is an explanatory diagram of a discarded waste bottle.
FIG. 14 is a front view of a bottle according to a second embodiment.
FIG. 15 is a side view of the bottle.
FIG. 16 is an explanatory diagram of a flat bottle.
FIG. 17 is an explanatory diagram of a discarded waste bottle.
[Explanation of symbols]
A, Aa Bottle B Cap B1 Cap base B2 Open / close lid B3 Hinge 1, 60 Mouth part 2, 62 Body part 2a, 62a Flat body part 3, 63 Bottom part 4 Handle 30, 72 Bottom wall 31, 73 Bottom end wall 32, 74 Punching parts 33, 75 Bottom end parts 34, 76 Ling parts 35, 77 Locking piece 50 Locking member 51 Connecting part 52 Connecting piece 53 Latching part 59 Picking piece

Claims (3)

Attach a hinged cap with a mouth part, body part, and bottom part, with a locking member on the cap base to the mouth part, and place a bending rib at the required part of the body part to crush the body part. A deformable bottle,
The bottom of the bottle comprises a bottom end wall and a bottom wall that follow the bottom peripheral wall at the bottom of the body of the bottle,
On the bottom peripheral wall on the opposite side of the hinge of the hinged cap attached to the bottle, there is a bore section from the middle part of the bottom peripheral wall to the bottom end wall,
A locking piece provided with a flange at the tip that engages with an arc-shaped locking member connected via a connecting piece near both sides of the hinge of the cap base is disposed so as to be positioned in the bore portion. A plastic bottle that can be made into a rounded waste bottle.   The plastic bottle with a handle that can be used as the rounding waste bottle according to claim 1, wherein the bottle includes a handle, and the handle has a bent portion so that the handle can be bent.   3. The plastic bottle according to claim 1, wherein the locking piece is formed in a cross-section H steel shape in which a concave portion is formed in the center and the peripheral portion is surrounded by a reinforcing portion having a constant width.

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