JP5177389B2 - Pinch grip type bottle container - Google Patents

Description

  The present invention relates to a pinch grip type bottle-shaped container in which a grip function part is integrally formed by forming recesses oppositely on both side wall portions of a body part of a large synthetic resin bottle-type container with a grip function part. .

  As a conventional technology for large plastic bottles with grip function, a vertically long recess is opposed to both side wall parts of the body, apart from a bottle-type container that has a separately molded handle attached to the container body. There is a pinch grip type bottle-type container that is formed and integrally formed with a grip function part constituted by both the recesses and a back wall portion located between the recesses.

In the conventional technology of this pinch grip type bottle-shaped container, both the recesses are formed in a size that allows the fingertips to enter substantially the first joint, and in the form of crossing the recesses on the bottom surfaces of the recesses, A reinforcing rib is provided to reinforce the concave portion and facilitate gripping by the fingertip.
JP 2003-165518 A

  Compared with the bottle-type container in which a separately formed handle is attached to the container body, the conventional technology of the pinch grip type bottle-type container described above reduces the manufacturing cost, simplifies the manufacturing process, and further consumes resin. From the viewpoint of resource saving, there are not only many advantages, but there is also an advantage that even if the bottle type container has a size of several liters, the grip property is stably exhibited.

  However, in the conventional technology of the pinch grip bottle type container described above, when the bottle type container falls while the contents are hermetically stored, the contents liquid moves suddenly due to the impact of the drop, and the bottle type container The internal pressure of the inner wall of the grip function part is suddenly increased, and the concave part, which is the main component of the grip function part formed with a relatively large depression, is partially reversed and deformed, so-called buckling is generated. There was a problem.

  Further, in order to prevent the occurrence of buckling in the above-mentioned recess, a means for sufficiently increasing the rising height of the reinforcing rib can be considered. However, if the rising height of the reinforcing rib is simply increased, the bottle which is a blow molded product There was a problem that the required shapeability of the grip function part of the mold container could not be ensured and molding defects were likely to occur.

  Therefore, the present invention was devised to solve the above-described problems in the prior art, and the occurrence of buckling in the concave portion constituting the grip function portion of the pinch grip type bottle-type container that is a blow molded product made of synthetic resin. It is a technical problem to suppress this.

Among the means of the present invention for solving the above technical problem, the configuration of the first invention is:
A pinch grip, which is a synthetic resin blow-molded product, that is formed by concaving a vertically long concave portion on each side wall portion of the body portion and forming a grip portion by this concave portion and a back wall portion between both concave portions. In the bottle type container,
Forming a depression in each upper region of both recesses with a finger contact recess for finger contact facing each other;
Protruding from the bottom of the recess of the finger rest recess, reinforcing the recess and providing a reinforcing rib in the finger rest recess (12) in a transverse manner to facilitate gripping by the fingertips,
In the recess, a flat wall region consisting of a gently sloping surface with a deepened depression is formed from the lower end edge of the recess to the lower end edge of the finger rest recess, and a reinforcing step is formed transversely in the flat wall region. To do,
Furthermore, the lower end edge of the concave portion is curved in a convex shape downward, and the shape of the reinforcing step portion is curved downward so as to match the curved shape of the lower end edge of the concave portion,
It is in.

  In the first aspect of the invention, the concave portions are formed to be opposed to each of the both side wall portions of the body portion, and the finger contact concave portions are formed to be recessed in the concave portions. A grip portion is formed with the back wall portion in between. Then, the hand holding the grip part causes the fingertip of the thumb to enter one finger contact recess, and the fingertip of a finger other than the thumb to enter the other finger contact recess.

  In the gripping state of the grip portion, the thumb that has entered the finger rest recess and the fingertips of fingers other than the thumb are either the upper side of the finger rest recess or the reinforcing rib that divides the inside of the finger rest vertically. By abutting, in the finger contact recess, a stable state is obtained that is substantially immovable up and down, thereby making it easier to grip the grip portion by hand.

  In addition, the reinforcing ribs that are formed in a transverse shape within the finger rests suppress the deformation of the finger rests that accompanies gripping, and also suppress the inverted bulging deformation of the finger rests when buckling occurs. Demonstrate the function to do.

  In addition, the flat wall region located in the portion from the lower end edge of the concave portion to the lower end edge of the finger rest concave portion becomes a relatively wide region in consideration of the formability at the time of biaxial stretch blow molding, and is relatively easy to bulge and deform. In addition, it can absorb some increase in internal pressure when buckling occurs, and a larger elastic restoring force acts on this region to form a reinforcing step in a transverse manner. The reverse deformation of the entire recess including the finger contact recess can be recovered, and buckling can be effectively suppressed in combination with the effect of the reinforcing rib formed in a transverse manner in the finger contact recess.

Further, by making the flat wall region a gentle inclined surface, it becomes possible to achieve shaping more smoothly during biaxial stretch blow molding.

In addition, by making the shape of the reinforcing step part curved downward so as to match the curved shape of the lower edge of the concave part, the inverted bulging deformation of the flat wall region at the time of buckling occurs more smoothly. Can be restored. Moreover, it can be made from a sense of incongruity also from the point of the design property regarding an external appearance.

According to the second aspect of the invention, the peripheral step portion is continuously formed from the upper end edge of the finger contact recess to the front side edge, and the reinforcing step portion is formed so as to be connected to the peripheral step portion. It is said that the finger contact recess is surrounded from three sides by the portion and the reinforcing step portion.

According to the second aspect of the invention, by enclosing the finger contact recess from three sides by the circumferential step portion and the reinforcing step portion, the inverted bulge deformation of the finger contact recess when buckling occurs is effectively prevented. Can be suppressed.

According to a third aspect of the present invention, three reinforcing ribs are provided in parallel, and the inside of the finger rest recess is divided into four substantially equal parts.

According to the third aspect , the fingertip of each finger of the hand holding the grip portion can be positioned in any one of the four sections in the recess, It is possible to provide a more stable grip and a stable gripping position.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the first invention, the buckling is effectively suppressed by the combined effect of the reinforcing rib formed in the finger-passing recess in the transverse shape and the reinforcing step portion formed in the transverse shape in the flat wall region. Can do.

In addition, by forming the flat wall region as a gently inclined surface, shaping during biaxial stretch blow molding can be achieved more smoothly.

Furthermore , by making the shape of the reinforcing step portion curved downward so as to match the curved shape of the lower edge of the concave portion, the reverse bulging deformation of the flat wall region when buckling occurs can be smoothed. Can be restored.

In the second invention, the finger contact recesses can be effectively suppressed in an inverted form by surrounding the finger contact recesses from the three sides by the peripheral step part and the reinforcing step part.

In the third invention, the fingertip of each finger of the hand holding the grip portion is necessarily located in one of the four sections in the recess, so that the fingertip recess in each finger The position is constant and stable, and it is possible to provide more secure and secure gripping properties.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below along the examples with reference to the drawings.
1 to 5 show an embodiment of a pinch grip type bottle-type container of the present invention. FIG. 1 is an overall front view, FIG. 2 is an overall side view, and FIG. 3 is an overall rear view partially broken. FIG. 4 and 5 are plan sectional views taken along lines AA and BB in FIG. 2, respectively.

  This synthetic resin biaxially stretched blow molded product is a pinch grip type bottle-type container 1 having an overall height of 395 mm, a maximum diameter of 137 mm, an internal volume of 4 liters, and a bottom portion 8 that provides a seat function at the lower end. A cylindrical mouth tube portion 2 in which a thread is engraved on the outer peripheral surface is connected to the upper end of the bottomed cylindrical body portion 4 through a tapered tubular shoulder portion 3 whose diameter is reduced upward. It has a structure.

A body 4 having reinforcing circumferential ribs 7 provided at both upper and lower ends, which are the boundary between the bottom 8 and the shoulder 3, is a pair of vertically long, opposed postures slightly above the rear side of both side wall portions 5. The recessed portion 11 is formed as a depression.
Furthermore, a finger contact recess 12 for finger contact is formed to be depressed in each upper region of both recesses 11.

The concave portion 11 of the present embodiment as a whole is a vertically long ellipse and has a height that is approximately ½ of the height of the body portion 4. In the finger rest recess 12 as a whole vertically long rectangular shape and it is formed by a total of 4 Ke inclined surface and the recess bottom surface 12b of the recess side surface 12s of the left and right recess upper surface 12ea and a recess bottom surface 12Eb. Further, a circumferential step portion 19 is continuously formed from the upper end edge of the finger contact recess 12 to the front side edge.

  In each finger contact recess 12, three reinforcing ribs 13 (see FIG. 2) are provided so as to cross an arch (see FIG. 5). The reinforcing ribs 13 have a function of increasing the mechanical strength of the finger resting recesses 12. The three reinforcing ribs 13 divide the finger resting recesses 12 into four sections vertically and approximately equally. By this section, the fingertip of one finger can be stably positioned in any of the sections in the finger rest recess 12.

  In addition, a small protrusion 15 is formed on the bottom surface 12b of each section of the finger contact recess 12 defined by the reinforcing ribs 13 in order to enhance the releasability of the blown bottle-type container 1 from the blow mold. doing.

A grip portion G is formed by the both finger contact recesses 12 and the back wall portion 6 located between the recesses 11 (see the white arrow in FIG. 5). The circumferential length along the direction needs to allow gripping (see FIG. 6) with the thumb positioned in one finger rest recess 12 and the other finger positioned in the other finger rest recess 12. The value is set to be substantially constant according to the size of the palm. In addition, it is advantageous that the grip portion G is positioned as close to the center of the body portion 4 as possible so that the bottle-shaped container 1 can be handled well while holding the grip portion G.

  In consideration of the above points, the shape and dimensions of the grip portion G are designed. In this embodiment, the back wall portion 6 of the body portion 4 is made flat by taking the diameter size of the body portion 4 into consideration. 4 is located in a depressed state in the central axis direction. (See Figure 5)

  Next, a large number (five) of lateral ribs 22 are provided in the back wall portion 6 and in the height range corresponding to the finger rest recess 12 constituting the grip portion G, and the grip portion G is firmly gripped by hand. Suppresses bending deformation at the time of delivery, realizing a firm grip.

  Moreover, the area | region in which the shallow horizontal groove 23 of the lower half of the back wall part 6 is formed, and each panel wall 3a which forms the shoulder part 3 are formed easily to be depressed and deformed at the time of decompression, and function as a decompression absorption panel. Demonstrate.

Next, in the lower part of the finger contact recess 12 in the vertically long oval recess 11, a gently inclined flat wall region 17 extends from the lower end edge of the semicircular recess 11 to the lower end edge of the finger contact recess 12. It is said. (See Figure 3)
The inclined flat wall region 17 can provide a sense of stability when the bottle-type container 1 is installed upright, and can smoothly achieve shaping at the time of biaxial stretch blow molding.

Here, the flat wall region 17 is relatively easily bulged and deformed due to an increase in internal pressure, and has a shape that can be restored. However, since it can absorb the increase in internal pressure to some extent and then can easily be restored to its original shape,
Furthermore, in order to enhance this buckling suppression effect, in the bottle-type container 1 of the present embodiment, so as to match the semicircular curved shape of the lower end edge of the recess 11 at the substantially central height position of the flat wall region 17, The reinforcing step 18 is formed in a crescent shape.
The reinforcing step portion 18 is formed so as to be connected to the peripheral step portion 19 so as to surround the finger contact recess 12 from three directions.

[Drop test]
In order to confirm the buckling suppression effect of the reinforcing step 18, the bottle-shaped container 1 of the present embodiment and the bottle-shaped container 1 of the present embodiment except that the reinforcing step 18 is not formed as a comparative example. A drop test was performed on bottle-shaped containers having the same shape.
(1) Test method With 4 liters of water filled in a bottle-type container and sealed with a cap, in a standing posture, the drop height was dropped from the bottom 8 at intervals of 10 cm onto a concrete floor. The height level at which the recess 11 is greatly deformed (buckling occurs) is measured.
(2) Test results Bottle type container 1 of this example 1 60 cm
Comparative example bottle type container 30cm

  As apparent from the test results, the buckling suppressing effect of the reinforcing step portion 18 was confirmed. The suppression effect is that a large elastic restoring force by the reinforcing step 18 acts on the flat wall region 17 that has been bulged and deformed at one end, and the entire recess 11 including the finger resting recess 12 by the restoring force of the reinforcing step 18. This is probably because the reversible deformation of can be recovered.

As mentioned above, although embodiment and the effect of the pinch grip type bottle-type container of this invention were described along the Example, embodiment of this invention is not limited to the said Example.
For example, in this embodiment, the reinforcing step 18 is formed in a crescent shape so as to match the semicircular curved shape of the lower end edge of the recess 11 and is connected to the peripheral step 19. In consideration of the size, shape, inclination angle, and elastic restoring force of the wall region 17, it can be formed in a transverse shape in various manners.

  As described above, the pinch grip type bottle container of the present invention has a firm gripping property, and further suppresses buckling at the time of dropping, and is widely used as a large bottle type container of about several liters. Expansion is expected.

1 is an overall front view showing an embodiment of the present invention. It is a whole side view of the embodiment shown in FIG. FIG. 2 is an overall rear view of the exemplary embodiment shown in FIG. It is the plane sectional view shown along the AA line in FIG. It is the plane sectional view shown along the BB line in FIG. It is explanatory drawing which showed the holding | grip state by a hand in the plane sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1; Bottle type container 2; Mouth part 3; Shoulder part 3a; Panel wall 4; Body part 5; Side wall part 6; Back wall part 7; Reinforcement peripheral rib 8; Side surface 12b; Recess bottom surface 12ea; Recess upper end surface 12eb; Recess bottom surface 13; Reinforcement rib 15; Small protrusion 17; Flat wall region 18; Reinforcement step portion 19;

Claims (3)

Each of the side wall portions (5) of the trunk portion (4) is formed with a vertically recessed portion (11) facing each other, and the recessed portion (11) and a back wall portion between the both recessed portions (11) ( In the pinch grip type bottle type container which is a synthetic resin blow-molded product that forms the grip part (G) in 6),
In the upper regions of the two concave portions (11), a finger contact concave portion (12) for finger contact is further formed to be opposed and formed so as to rise from the bottom surface (12b) of the concave portion of the finger contact concave portion (12). Reinforcing ribs (13) that reinforce the recesses (11) and that are easy to grip with the fingertips are provided transversely in the finger rest recesses (12), and the recesses (11) in the recesses (11) ) From the lower edge of the finger contact recess (12) to form a flat wall region (17) consisting of a gently inclined surface with a deepened depression , and a reinforcing step ( 18) is formed in a transverse shape, and the lower end edge of the concave portion (11) is curved in a convex shape facing downward, and the shape of the reinforcing step portion (18) is formed on the lower end edge of the concave portion (11). A pinch grip type bottle-shaped container characterized by having a shape curved downward so as to match the curved shape . From the upper end edge of the finger rest recess (12) to the front side edge, it continuously forms a circumferential step portion (19), and a reinforcing step portion (18) is formed so as to be connected to the circumferential step portion (19), these peripheral step portion (19) and the reinforcing step portion (18) by a pinch-grip bottle-shaped container of claim 1, wherein the finger rest recess (12) so as to surround the three sides. The pinch grip type bottle-type container according to claim 1 or 2 , wherein three reinforcing ribs (13) are provided in parallel, and the inside of the finger contact recess (12) is divided into four substantially equal parts.

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