JP2008296926A - Synthetic resin bottle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve rigidity of a grip provided on an upper body part divided by a constriction going around the body part. <P>SOLUTION: A bottle 1 has a domed upper body part 4 connected to an lower body part 2 equipped with a bottom part through the constriction 3, a shoulder 5 going round on the upper end of the upper body part 4, and a cylindrical part 6 connected to the shoulder 5. On the back side of the upper body part 4, two opposing recesses 4a are provided along the circumference, and the site formed between them each other is made to be gripping part G. On the back face of this grip G, a plurality of lateral channels D are provided, and furthermore, the back face shape of the grip G is curved along the axial line O, and is composed of a recessed face C recessed toward the inner part of the bottle 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is a synthetic resin bottle having a body portion having a bottom portion, and the body portion is divided into an upper body portion and a lower body portion by a constricted portion, and a grip portion is provided on the upper body portion. In this regard, the present invention relates to a technique for ensuring high rigidity.

Some conventional synthetic resin bottles have a body portion having a bottom and a circular cross section, and this body portion is divided into an upper body portion and a lower body portion by a constricted portion. As an example, for example, there is one in which a plurality of constricted portions are formed on the upper body portion (see, for example, Patent Document 1).
International Publication WO2002 / 081313 Pamphlet

  Further, the conventional bottle is provided with two concave portions facing each other along the circumferential direction on the rear side of the lower body portion, and the portion formed between them is used as a grip portion, so that the carrying and contents of the bottle are Things can be poured out. That is, the conventional bottle has good transportability and operability without separately providing a handle or the like.

  On the other hand, it is possible to provide the grip part on the upper body part. However, if the rigidity of the grip part is not reliably increased, for example, when the bottle has a large capacity or the bottle is thinned. In this case, it is considered that when the user grips, deformation occurs and the transportability and operability are impaired.

  An object of the present invention is to increase the rigidity of the grip portion when the grip portion is provided on the upper body section defined by the constricted portion.

  The present invention is a synthetic resin bottle having a body portion having a bottom portion, and the body portion is divided into an upper body portion and a lower body portion by a constricted portion, on the rear side of the upper body portion, Two concave portions facing each other in the circumferential direction are provided, and a portion formed between the concave portions is used as a grip portion, and at least one horizontal groove or horizontal rib is provided on the back surface of the grip portion. is there.

  In the present invention, when at least one lateral groove or lateral rib is provided on the back surface of the grip portion, the arrangement is not only arranged with a gap along the axis of the bottle, but also with a gap along the circumferential direction. It arrange | positions, arrange | positions combining these, or arrange | positions at random.

  In general, the term “groove” or “rib” is associated with a thick or cut-out shape, but a synthetic resin bottle is basically blow-molded. Therefore, in the present invention, the term “groove” or “rib” includes, of course, what is configured as a substantially uniform thick shape.

  In addition, according to the present invention, it is preferable that the back surface shape of the grip portion is configured by a concave surface that is curved along the axis of the bottle and is recessed toward the inside of the bottle. According to the present invention, when the concave surface is formed, the radius of curvature may be constant or variable so as to be a suitable curved surface considering the user layer and the like.

  Further, the upper body portion according to the present invention has a diameter that is circulated along the upper end of the constricted portion and reduced in diameter with a certain gradient, or that is circulated along the upper end of the constricted portion and reduced in diameter into a dome shape. However, it is preferable to use a dome-shaped and reduced diameter around the upper end of the constricted portion.

  According to the present invention, the rigidity of the grip portion is increased by providing at least one lateral groove or lateral rib on the back surface of the grip portion. For this reason, even if a user holds a grip part firmly, a deformation | transformation does not arise in a grip part.

  Therefore, if a lateral groove is provided on the back surface of the grip portion, the transportability and operability of the bottle can be further improved. For this reason, even if the internal capacity of the bottle is increased or the bottle is thinned, it is easy to use without impairing the transportability and operability of the bottle.

  Moreover, according to this invention, the back surface shape of a grip part curves along the axis line of a bottle, and it can further improve the rigidity of a grip part by comprising the concave surface dented toward the inside of a bottle. In addition, when the back surface shape of the grip portion is configured as a concave surface, the user's palm fits the concave surface when the grip portion is gripped.

  Therefore, if the back surface shape of the grip portion is configured to be a concave surface, the transportability and operability of the bottle can be further improved.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

  1 and 2 are a front view and a rear view, respectively, showing a PET bottle (hereinafter referred to as “bottle”) 1 according to the first embodiment of the present invention. FIG. 3 is a right side view showing the bottle 1. 4 and 5 are a plan view and a bottom view showing the bottle 1, respectively. FIG. 6 is a perspective view showing the bottle 1 from the back.

  The bottle 1 is an integrally molded product that is biaxially stretch blow-molded using a preform (not shown) made of a PET resin, and a reference numeral 2 is a lower body portion that is integrally provided with a bottom portion. As shown in FIGS. 4 and 5, the lower body portion 2 has an octagonal prism shape whose cross section is almost a rectangle having a short side 2 a and a long side 2 b.

  Reference numeral 3 denotes a constricted portion that circulates along the upper end of the lower body 2 and is connected to the lower body 2 as shown in FIG.

  Reference numeral 4 denotes an upper body portion that circulates along the upper end of the constricted portion 3 and is connected to the constricted portion 3 as shown in FIG. The upper body 4 has a reduced diameter in a substantially dome shape. As shown in FIG. 1 and the like, the upper body 4 has an outermost diameter shorter than the outer diameter of the lower body 2.

  On the rear side of the upper body 4, as shown in FIGS. 2, 3, etc., two recesses 4 a that are opposed along the circumferential direction are provided. Thus, by providing the recessed portion 4a at a position shifted to the rear side of the upper body portion 4, a step surface f1 is formed on the front side of the recessed portion 4a.

  Each step surface f1 is provided with one vertical rib 4r. The number of the longitudinal ribs 4r according to this embodiment may be one or more for each step surface f1.

  Moreover, although the recessed part 4a which concerns on this form reaches from the upper trunk | drum 4 to the narrow part 3, it should just be provided in the area | region of the upper trunk | drum 4 at least.

  On the other hand, as shown in FIG. 1 and the like, a concave surface portion f2 extending in the circumferential direction to connect the two concave portions 4a and recessed toward the inside of the bottle 1 is formed on the front side of the upper body portion 4. ing.

  The concave surface portion f2 is provided with a plurality of dimples (recessed portions) 4d. The dimples 4d according to this embodiment are arranged at equal intervals along the circumferential direction, and are provided in three stages at equal intervals in the direction along the axis O. The dimples 4d at each stage are alternately arranged so as not to overlap with the dimples 4d at other stages.

  Further, the dimple 4d according to the present embodiment has a substantially elliptical shape extending in the circumferential direction, and both ends thereof are linearly separated by the vertical line L2.

  In addition, in the dimple 4d according to the present embodiment, the horizontal width of the dimple 4d arranged in the upper stage is shorter than the horizontal width of the dimple 4d arranged in the lower stage. The width dimension is the shortest.

  In the drawing, the reference numeral 4d is exemplarily shown for each stage, and the others are omitted.

  Reference numeral 5 denotes a shoulder that circulates along the upper end of the upper trunk 4 and is connected to the upper trunk 4. The shoulder 5 is reduced in diameter so that the gradient is reduced.

  Reference numeral 6 denotes a cylindrical portion connected to the shoulder portion 5 and having a spout A (see FIG. 6).

  In the bottle 1, the part formed between the recesses 4a functions as a grip part G for a user to hold and carry and pour out contents.

  On the back surface of the grip portion G, a plurality of lateral grooves D are formed at equal intervals in the direction along the axis O as shown in FIG. The lateral groove D according to the present embodiment extends from the upper body portion 4 to the constricted portion 3, but may be provided at least in the region of the upper body portion 4.

  Further, as shown in FIG. 2, the shape of the lateral groove D according to the present embodiment is a substantially elliptical shape extending in the circumferential direction, and both ends thereof are linearly separated by the vertical line L1.

  In addition, the lateral groove D according to the present embodiment has a lateral width dimension of the lateral groove D disposed on the lower side longer than that on the upper side, and the lateral dimension of the lateral groove D disposed on the lowermost side is the longest. It has become.

  When the lateral groove D is provided on the back surface of the grip part G, the rigidity of the entire grip part G is increased, so that even if the user firmly holds the grip part G, the grip part G is not deformed.

  Therefore, if the lateral groove D is provided on the back surface of the grip portion G, the transportability and operability of the bottle 1 can be further improved. For this reason, even if the internal capacity of the bottle 1 is increased or the bottle 1 is thinned, it is easy to use without impairing the transportability and operability of the bottle 1.

  In the drawings, one symbol D is exemplarily described, and the others are omitted. Further, the lateral groove D can be replaced with a lateral rib. In general, the term “groove” or “rib” is associated with a thick or notched shape, but PET bottles are basically blow-molded. Therefore, according to the present invention, the term “groove” or “rib” includes, of course, a raised portion or a recessed portion configured as a substantially uniform thick shape.

  Furthermore, the back surface shape of the grip portion G is formed along a concave surface C that is curved along the axis O and recessed toward the inside of the bottle 1 as shown in FIG.

  Thus, even if the back surface shape of the grip portion G is configured by the concave surface C, the rigidity of the entire grip portion G can be further increased. In addition, when the back surface shape of the grip part G is configured by the concave surface C, the user's palm fits the concave surface C when the grip part G is gripped.

  Therefore, the transportability and operability of the bottle 1 can be further improved by configuring the back surface of the grip portion G to be a concave surface C.

  In addition, although the concave surface C which concerns on this form reaches the narrow part 3 from the upper side trunk | drum 4, it should just be provided in the area | region of the upper side trunk | drum 4 at least. In addition, the concave surface C according to the present embodiment has a constant radius of curvature, but may be variable so as to be a suitable curved surface considering a user layer or the like.

  Further, the grip part G plays a role of a beam with respect to the upper body part 4 (including the constricted part 3 in this embodiment). The vertical rib 4r provided on the step surface f1 of the recess 4a also serves as a beam for the grip portion G, that is, as a beam for the upper body portion 4.

  That is, according to the bottle 1, when a large compressive stress acts along the axis O direction of the bottle, it is possible to improve the strength of the entire upper body portion 4 that easily buckles.

  Furthermore, according to the bottle 1, since the lower body part 2 has a prismatic shape, each of the corner parts 2c connecting the short side 2a and the long side 2b serves as a beam for the lower body part 2. That is, according to the bottle 1, the strength of the lower body 2 is also ensured.

  Therefore, the bottle 1 is also a PET bottle having a high strength against buckling while having good transportability and operability without separately providing a handle or the like.

  In the bottle 1, the vertical rib 4r is provided on the step surface f1, but according to the present invention, the vertical rib 4r may be replaced with a vertical groove.

  Further, in the bottle 1, a concave surface portion f2 that connects the two concave portions 4a is formed on the front side of the upper body portion 4, and a plurality of dimples 4d are provided on the concave surface portion f2, so that the concave surface portion f2 and the dimple 4d are provided. Since it plays a role of dispersing compressive stress, the strength against buckling can be further increased.

  In the bottle 1, a plurality of dimples 4d are provided on the concave surface portion f2, but according to the present invention, at least one dimple 4d may be provided. Further, according to the present invention, the shape and arrangement of the dimples 4d can be variously changed.

  Furthermore, according to the present invention, the dimple 4d can be replaced with a raised portion that bulges outward with respect to the bottle 1. In addition, as described above, since the PET bottle is basically blow-molded, when it is referred to as a “dent” or a “protrusion”, it is configured as a substantially uniform thick shape. Although it is associated, when referring to a “dent” or “bump” according to the present invention, it should be understood that it includes a groove or a rib that is formed into a thick or notched shape.

  The above is a preferred embodiment of the present invention, but various modifications can be made within the scope of the claims.

  The present invention can be used as a bottle for filling liquid contents such as medicines and beverages.

It is a front view which shows the PET bottle which is the 1st form of this invention. It is a rear view of the same form. It is a right view of the same form. It is a top view of the same form. It is a bottom view of the same form. It is a perspective view which shows the form from the back.

Explanation of symbols

1 PET bottle 2 Lower body
2a Short side (front, back)
2b Long side (side)
2c Corner (corner)
3 Constricted part 4 Upper body part
4a recess
4d dimple (dent)
4r Vertical rib 5 Shoulder 6 Tubular part D Horizontal groove
f1 Stepped surface formed on the front side of the recess
f2 Concave surface of upper trunk G Grip

Claims (3)

A synthetic resin bottle having a body portion having a bottom portion, the body portion being partitioned into an upper body portion and a lower body portion by a constricted portion;
On the rear side of the upper body portion, two concave portions facing each other along the circumferential direction are provided, and a portion formed between the concave portions is used as a grip portion.
A synthetic resin bottle characterized in that at least one lateral groove or lateral rib is provided on the back surface of the grip portion.   The synthetic resin bottle according to claim 1, wherein the rear surface shape of the grip portion is formed by a concave surface that is curved along the axis of the bottle and is recessed toward the inside of the bottle.   3. The synthetic resin bottle according to claim 1, wherein the upper body portion circulates along the upper end of the constricted portion and is reduced in diameter to a dome shape.

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