JPS644662Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a cylindrical synthetic resin bottle made by blow molding. The purpose of this is to reduce the local concentration of deformation and ensure ease of holding when pouring out liquid, etc.

Nowadays, from the perspective of emphasizing the aesthetic appearance,
For example, square prism-shaped synthetic resin bottles are now widely manufactured, and by providing a concave part in the peripheral wall of the body, it is possible to provide a more aesthetically pleasing appearance as well as to make the bottle easier to hold. Improvements have been made in this area.

FIG. 1 is a cross-sectional view showing an example of such a conventional synthetic resin bottle. When negative pressure is generated due to a change in volume due to cooling of the liquid stored inside the bottle, Here, the bottom wall of the recess provided in the generally planar, wide peripheral wall portion of the rectangular prism-shaped bottle body is the same as the bottom wall of the recess provided in the approximately planar, narrow peripheral wall portion. It was extremely unsightly, as the inward deformation was significant compared to the bottom wall.

In particular, as shown by the imaginary line in FIG. 1, the bottom wall of the wide recess was deformed to a much greater degree than the bottom wall of the narrow recess, and there was even a risk that the entire bottle would become distorted and difficult to hold.

In addition, when holding the bottle when extracting the contents, you must grasp the upper part of the body with the label around it, but if this upper part is flat, it will be difficult to touch the label surface with your hands. Another drawback was that the grip was unstable because finger pressure was applied to the bottom wall of the recess, which easily deformed inward.

The present invention was devised to eliminate the drawbacks and inconveniences of the synthetic resin bottle described above, and in particular, by providing reinforcing grooves and reinforcing protrusions around the wide recess, the amount of deformation is minimized. It is designed to be held small and furthermore, a horizontal protrusion is provided on the upper part of the body to make it easier to hold.An example of this will be described below with reference to the drawings.

As shown in FIGS. 2 and 3, in the body 2 of the bottle body 1 made of synthetic resin by blow molding, the widths of the front wall 3 and the rear wall 4, which are the peripheral walls, are larger than the width of the side wall 5. It has a rectangular prism shape with each wall surface being substantially planar.

In addition, in the front wall 3 and rear wall 4 portions, two approximately square-shaped recesses 6 having a wide width are formed vertically adjacent to each other in accordance with the width thereof, and in the side wall 5 portion, Two elongated substantially rectangular recesses 7 with a small width are formed vertically adjacent to each other in accordance with the width,
The bottom walls 6a, 7a of each of the recesses 6, 7 are planar, occupying almost the entire width and length of the front wall 3, rear wall 4, and side wall 5, respectively.

A reinforcing ridge 8 is provided along the outer shape of the recess 6 on the peripheral edge of the bottom wall 6a in the wide recess 6 provided in the front wall 3 and rear wall 4.
is the front wall 3, which is the peripheral wall portion, through the reinforcing groove 10.
and continues to the rear wall 4.

Furthermore, among the recesses 6, a protrusion 9 of an appropriate length is provided on the bottom wall 6a of the recess 6 provided in the upper part of the body 2, crossing the center.

In addition, when the cross-sectional shape of the body section 2 is approximately elliptical and is composed of a front wall 3 and a rear wall 4, each of which is gently curved, and when forming the recess 6 as described above, each bottom wall 6a is The above-mentioned protrusion 8 may be provided.

The bottle according to the present invention has the structure as described above.

Therefore, even if negative pressure is generated within the bottle body 1 having a rectangular prism-shaped body, the bottom wall 6a in the wide recess 6, which is most susceptible to the negative pressure, is reinforced around the periphery along the contour of the recess 6. Since the protrusions 8 and reinforcing grooves 10 are provided to increase the rigidity, the deformation width of the bottom wall 6a is small as shown by the imaginary line in FIG. 3, and therefore the bottom wall of the narrow recess 7 The amount of deformation is almost the same as that of 7a.

In addition, since the bottom wall 6a of the recess 6 on the upper part of the body 2 is further provided with a protrusion 9 extending across the center, not only reinforcement of the bottom wall 6a is ensured, but also
When gripping the bottle body 1, the fingers are easily caught, and even if the bottom wall 6a is held from above the label, it does not slip, making operations such as extraction of the internal solution extremely easy.

That is, since the reinforcing protrusions 8 and the reinforcing grooves 10 are formed by bending and deforming the peripheral wall of the bottle, they increase the rigidity of each recess 6 and make it difficult to deform the peripheral edge and the bottom wall 6a itself. Therefore, each recess 6 deforms in such a way that the entire bottom wall 6a sinks into the bottle while maintaining the shape of its bottom wall 6a. This results in deformation occurring over a wide range without being noticeable.

Therefore, the deformation in the recess 6 is not concentrated in a localized area, and this deformation does not cause a large change in the appearance of the bottle when viewed from the perspective of the bottle as a whole.

Furthermore, since the protrusion 9 is provided, the entire bottom wall 6a, which is originally curved and deformed into the inside of the bottle, can be kept almost flat, so when the bottle is gripped and lifted, the gripping force is applied. This has the advantage that the concave portion 6 is not significantly deformed, and that the fingertip can easily be attracted to or held by the protrusion 9.

Therefore, according to the present invention, even if a wide recess is provided in the peripheral wall of a synthetic resin bottle, the bottom wall of the recess will be significantly deformed inward due to the negative pressure generated inside. The bottle has a good appearance and is easy to hold, and the present invention is excellent and effective.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a conventional bottle, FIG. 2 is a perspective view of a bottle according to the present invention, and FIG. 3 is a cross-sectional view of the same. 1...Main body, 6...Wide recess, 6a...Bottom wall,
8...Reinforcement protrusion, 9...Protrusion, 10...Reinforcement groove.

Claims (1)

[Scope of utility model registration request] The trunk has a rectangular columnar body, and at least two recesses each having a planar bottom wall are formed in a wide peripheral wall portion and a narrow peripheral wall portion of the trunk so as to occupy almost the entire area of the peripheral wall portion. A reinforcing protrusion and a reinforcing groove are provided along the outline of the recess on the bottom wall peripheral edge of the recess in the wide peripheral wall portion, and the reinforcing protrusion is a reinforcing groove. The synthetic resin bottle is connected to the peripheral wall portion through the recess, and further includes a protrusion extending across the center of the bottom wall of the upper recess.