JP4045541B2 - Synthetic resin housing with handle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In particular, the present invention relates to a synthetic resin casing with a handle, in which a handle is assembled and fixed to a recess recessed in a rear portion of a trunk portion of the casing main body.
[0002]
[Prior art]
As a manufacturing method of the case with handle, there is a method in which a handle made by injection molding in a fixed shape in advance is used as an insert material, and a biaxial stretch blow molding is performed on the synthetic resin cage main body. However, from the viewpoint of convenience in transportation, storage, display, and use, there are many cases in which a concave part is formed in the rear part of the main body of the saddle so that a handle is accommodated in the concave part. Yes.
[0003]
For example, Patent Document 1 discloses a handle having a pair of assembled beam pieces integrally formed so as to spread the arms on the left and right sides of the handle plate, and Patent Document 2 includes protrusions provided above and below the handle plate. There is a description of a housing with a handle using a handle as an insert portion.
[0004]
In addition, in order to facilitate the pouring operation of the case-equipped case with the handle described above, a case in which dimples (dents) are formed at the upper center of the handle plate, directly above the recesses, and at the center of the back side of the main body is also used. It has become like this. By supporting the dimple with the tip of the thumb of the hand holding the handle, the heavy body filled with the content liquid can be stably held in an inclined posture.
[0005]
[Patent Document 1]
JP 2001-328636 A [Patent Document 2]
Japanese Patent Laid-Open No. 2000-335584
[Problems to be solved by the invention]
However, in recent years, in the fields of liquor, juice and other soft drinks, there has been a growing need for larger containers that have a capacity of several liters. It becomes necessary to hold the casing which is several kilograms including the content liquid with one hand.
[0007]
As described above, when the weight is increased, it is difficult to maintain the posture of the casing when the content liquid is poured out, and the function of the dimple described above is indispensable. The peripheral wall tends to be thin overall, and the wall surface is closer to a flat plate shape, so that the surface rigidity is low, and as a result, the wall surface in the vicinity of the left and right peripheral edge portions of the dimple is particularly likely to be inverted and deformed.
[0008]
When such a wall reversal occurs, there is a problem that the posture of the housing is abruptly shaken and the content liquid is scattered outside the container such as a cup, and the reversal part often does not return, This is also a problem from the standpoint of merchantability, and in particular, in the case of a large casing, the creation of a dimple shape having sufficient rigidity without reversal deformation has been an issue.
[0009]
Therefore, the present invention has been devised to solve the above-described problems in the prior art, and it is a technical problem to suppress the deformation of the dimple formed in the upper portion of the recess of the heel body, particularly the reversal deformation in the vicinity of the right and left peripheral edge portions. Accordingly, an object of the present invention is to provide a synthetic resin casing with a handle that is excellent in safety, handling, and particularly in dispensing operation even for a large container having a capacity of several liters.
[0010]
[Means for Solving the Problems]
Among the present invention for solving the above technical problems, the means of the invention according to claim 1 is:
The handle is a synthetic resin case with a handle for assembling and fixing the handle in a standing posture at the center of the back side of the recess main body recessed in the rear part of the trunk,
Forming a dimple for supporting the housing by abutting the tip of the thumb of the hand gripping the handle plate, which is the grip gripping portion, at the center of the back surface of the heel body immediately above the recess ;
Forming a circumferential groove extending from one end of the left and right base ends to the other end through the front of the heel body, with the right and left base ends of the outer sides of the left and right peripheral edges of the dimple.
Forming the peripheral rib with the peripheral wall having a vertical ridge shape on the left and right peripheral edge portions of the dimple, by the recesses on the left and right proximal end portions of the peripheral groove
It is in.
[0011]
In particular, in the case of a large housing with a handle, the handle plate is held by four fingers other than the thumb, and the belly side of the tip of the thumb is applied to the dimple so that the housing is held in an inclined and fixed posture. The content liquid can be stably poured into a container such as a cup, but fine adjustment of the posture with the thumb is particularly important, and the shape stability of the dimples during the pouring operation is required.
[0012]
The larger the chassis, the greater the weight, so a considerable force acts between the tip of the thumb and the wall surface of the dimple, and the peripheral wall of the body of the body of the collar body tends to be thin overall, and the wall surface is flat. Since the surface rigidity becomes lower due to the shape, the concave curved surface of the dimple is pushed to the inner side of the heel body, the concave curved surface portion is deformed so as to expand in all directions, and this deformation further develops. In particular, a phenomenon occurs in which the wall surface is inverted in the vicinity of the left and right peripheral edges.
[0013]
The configuration according to claim 1 was devised in consideration of the deformation mode in the vicinity of the dimple as described above, and by forming peripheral ribs having a peripheral wall with a vertical ridge shape on the left and right peripheral portions of the dimple, Enlarged deformation of the concave curved surface of the dimple can be suppressed, and further, the inversion of the wall surface at the right and left peripheral edge portions of the dimple can be suppressed, and the stable dispensing operation of the content liquid can be maintained.
[0015]
In addition, peripheral ribs can be formed by the peripheral grooves, and the peripheral grooves formed over the entire circumference excluding the dimples can function as peripheral ribs to improve the rigidity of the entire housing. In addition, the appearance can be improved.
[0016]
Means of the invention of claim 2, wherein, in the invention of claim 1 Symbol placement,
The main body has a shape in which a vertical protrusion protrudes from the center of the bottom surface of the recess,
A handle plate is integrally provided between the upper and lower ends of a pair of assembled beam pieces arranged in parallel in a standing posture, and the pair of assembled beam pieces are firmly attached to the bottom surface of the concave portion of the heel body. To have a shape with a protruding protruding protrusion that will be an assembly part,
A part of the assembled beam piece and the fitting protrusion constitute an insert part to the bottom surface of the recess near the vertical protrusion side of the main body,
It is in.
[0017]
In the housing according to claim 2, the pair of assembled beam pieces integrally provided on the handle plate has a fitting projection as a strong assembly with an undercut shape at the center of the recess bottom of the recess of the collar body. Since the protruding vertical protrusions are assembled and fixed so as to be sandwiched from both sides, a handle-attached casing having high handle assembly strength and easy insert molding is obtained.
[0018]
According to a third aspect of the invention, in the invention of the second aspect, the fitting protrusion is formed at a right angle in the vicinity of a corner portion formed by the opposing side surface and the tip surface of the pair of assembled beam pieces. In this configuration, a fitting protrusion having a substantially right-angled triangular cross section is provided so that the side of the projection protrudes substantially perpendicularly from the opposite side surface and the other side protrudes substantially perpendicularly from the tip surface.
[0019]
The configuration of the fitting protrusion according to claim 3 is such that when the handle is set in the blow split mold, the tip of the fitting protrusion is arranged closer to the outer peripheral surface of the preform, and the entire fitting protrusion It was created with the goal of achieving deformation along the outer periphery of the mating protrusion at the initial stage of preform deformation by forming a simple shape, and the resin wraps around the undercut. Can be achieved at a high level, and a high strength of assembly can be obtained which can sufficiently cope with a larger container.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings (FIGS. 1 to 7).
The casing according to this embodiment is a biaxial stretch blow-molded product made of polyethylene terephthalate resin (hereinafter referred to as PET) having a capacity of 4 liters, and is composed of a mouth portion 7, a shoulder portion 8, a trunk portion 2 and a bottom portion 9. A handle 10, which is a synthetic resin injection-molded product, is assembled and fixed by insert molding means to a main body 1 and a recess 3 that is recessed in the rear portion of the body 2 that has a substantially cylindrical shape with a bottom of the main body 1. It consists of and.
[0021]
The recess 3 of the heel body 1 has a ridge-shaped vertical protrusion 5 that is relatively wide along the vertical direction at the center of the bottom surface 4 of the recess that has an upright flat surface at the center excluding the upper and lower ends. A substantially constant height is formed so as to protrude in the form of a bulge over the entire height range of the recess 3.
[0022]
5 to 7 show the handle 10. A pair of beam pieces 12 with a straight bar shape are connected between upper and lower ends of a vertical plate-like handle plate 11 via a curved bar-shaped connecting leg piece 12a. In the form of a fitting protrusion K having a substantially right-angled triangular cross section in the vicinity of a corner portion formed by the opposed side surface 14a and the tip end surface 13 of the pair of assembled beam pieces 12 provided in a parallel manner. One fitting ridge 17 is provided so that one side forming a right angle protrudes substantially perpendicularly from the opposing side surface 14a and the other side protrudes substantially perpendicularly from the distal end surface 13 of the assembled beam piece 12. . (See Figure 7)
[0023]
In this embodiment, the fitting ridge 17 is formed in a two-ridge shape, and in order to improve the slidability with the preform P, the lateral ridge 25 is formed in the fitting ridge 17. (See Figure 6)
[0024]
The assembly of the handle 10 to the heel body 1 is achieved by biaxial stretching blow molding of the heel body 1 using the handle 10 as an insert material, but the PET preform P expanded by air blowing is in the initial stage of stretching. First, it abuts on the end surface 19 of the ridge which is gently formed in an arc shape, covers the end surface 19 of the ridge, and the PET is formed on the outer peripheral surface of the fitting ridge 17 whose sectional shape is a simple substantially right triangle. It goes around without gaps. (See Figs. 3 and 7)
[0025]
A pair of assembled beam pieces 12 integrally provided on the handle plate 11 project from the center portion of the recess bottom surface 4 of the recess 3 of the rod body 1 by using the fitting protrusion 17 as an undercut strong assembly portion. The handle 10 is assembled and fixed to the bag main body 1 so as to sandwich the vertical protrusion 5 from both sides, and sufficient assembly strength is exhibited even in a large container of 4 liters. (See Figure 3)
[0026]
As shown in FIGS. 1 and 2, the shape of the shoulder portion 8 of the heel body 1 of this embodiment is a truncated cone shape at the top, and the lower peripheral wall is formed from nine substantially trapezoidal shaped panels 31. Forming,
The buckling strength and surface rigidity of this part are increased.
[0027]
Further, as shown in FIG. 2, the abdomen at the tip of the thumb is brought into contact with the grip plate 11 with four fingers other than the thumb at a position just above the recess 3 of the heel body 1 and in the center of the back surface. Dimples 21 are formed to support the posture of the housing.
[0028]
A circumferential groove 23 is formed over the entire circumference of the heel body 1 excluding the dimple 21 portion, with the base end portion 24 being immediately next to the left and right peripheral edge portions 22 of the dimple 21, and a recess in the base end portion 24. As a result, the left and right peripheral edge portions 22 of the dimple 21 are used as vertical rib-shaped peripheral ribs 22a.
[0029]
In order to give the dimple 21 a sense of rigidity, the dimple depth De is set to be as deep as 4.5 mm, and in order to make the peripheral rib 22a fully function as a vertical ridge-shaped rib, the end radius is R is set as small as 5 mm. (See Figure 4)
[0030]
8 and 9 are comparative examples of a synthetic resin casing with a handle for confirming the effect of the present invention. The dimple 21 is formed with a relatively small size and a circumferential groove in order to suppress deformation. Except for the fact that 23 is not formed, the shape is the same as that of the embodiment.
[0031]
After filling the contents liquid of the case of the embodiment and the case of the comparative example, the handle plate was gripped, and the pouring test was conducted while the tip of the thumb was in contact with the dimple 21. In the case, the enlarged deformation of the concave curved surface 21a of the dimple 21 was small and the pouring operation could be performed stably. However, in the comparative example of the case, the enlarged deformation of the concave curved surface 21a greatly progressed. Finally, inversion of the wall surface occurred in the vicinity of the left and right peripheral edge portions 22, and a stable dispensing operation was difficult.
[0032]
In the above embodiment, the method of forming the peripheral rib 22a by the base end portion 24 of the peripheral groove 23 has been described. However, the means of the present invention is not limited to the peripheral groove 23, and By forming a certain dent immediately on the side, the function as the peripheral rib 22a can be exhibited, and the formation range, shape, and the like can be appropriately determined in consideration of the effect as a rib, appearance, and the like.
[0033]
Further, the shape of the dimple 21 itself, the installation height position, and the like can be appropriately determined depending on the capacity, shape, handle shape, and the like of the heel body.
[0034]
Furthermore, the operational effects of the present invention are not limited to the shape of the heel body 1 or the handle 10 shown in the above-described embodiment, and the ridge formed with a recess for attaching the handle 10 behind the heel body 1. It is generally exhibited in the body, and a stable pouring operation can be achieved even in a large-sized housing.
[0035]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
According to the first aspect of the present invention, by forming peripheral ribs with the peripheral wall having a vertical ridge shape on the left and right peripheral edge portions of the dimple, the peripheral ribs can suppress expansion of the concave curved surface of the dimple. Thus, it is possible to suppress the reversal of the wall surface at the left and right peripheral edge portions of the dimple, and the stable dispensing operation of the content liquid can be maintained.
[0036]
Also, the peripheral rib can be formed by the peripheral groove, and the peripheral groove formed over the entire circumference excluding the dimple portion exhibits the function as a rib to improve the rigidity of the entire casing. In addition, the appearance can be improved.
[0037]
In the invention of claim 2, the pair of assembled beam pieces integrally provided on the handle plate has the fitting protrusion as a strong undercut-shaped assembling portion, and the center of the concave bottom surface of the concave portion of the collar body. Since the vertical projecting portion protruding from the portion is assembled and fixed so as to be sandwiched from both sides, the handle has a strong strength with which the handle is easily assembled and the insert is easily molded.
[0038]
In the invention of claim 3, the fitting protrusion having a substantially right triangle shape in cross section can achieve a high degree of resin wrapping around the undercut portion, which is sufficient for larger containers. It is possible to provide a handle-equipped housing having a high assembly strength that can be handled.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of a synthetic resin casing with a handle according to the present invention.
FIG. 2 is a rear view of the embodiment shown in FIG.
FIG. 3 is a cross-sectional plan view taken along the line AA in FIG.
4 is a cross-sectional plan view of the main part, taken along the line DD in FIG. 2 and indicated by an outer contour line. FIG.
5 is a front view of the handle used in the embodiment shown in FIG. 1. FIG.
6 is a longitudinal side view of the handle used in the embodiment shown in FIG. 1, as viewed along the line BB in FIG.
7 is a cross-sectional plan view of the main part, taken along the line CC in FIG.
FIG. 8 is a main part rear view showing a comparative example of a synthetic resin casing with a handle.
FIG. 9 is a cross-sectional plan view of the main part, taken along the line EE in FIG.
[Explanation of symbols]
1; 壜 main body 2; trunk 3; recess 4; recess bottom 5; vertical protrusion 7; mouth 8; shoulder 9; bottom 10; handle 11; handle plate 12; End surface 14a; opposing side surface 17; fitting ridge 19; ridge tip surface 21; dimple 21a; concave curved surface 22; peripheral portion 22a; peripheral rib 23; peripheral groove 24; base end portion 25; Panel K; fitting protrusion P; preform De; dimple depth R;

Claims (3)

A handle for assembling and fixing the handle (10) in a standing position at the center of the back surface of the heel body (1) of the recess (3) recessed in the rear part of the body (2) of the heel body (1). Synthetic resin enclosure with
At the center position of the back surface of the heel body (1) immediately above the recess (3), the tip of the thumb holding the grip plate (11), which is the grip portion of the grip (10), is brought into contact with the heel body. Forming dimples (21) for support;
The left and right peripheral edge portions (22) of the dimple (21) are set to the right and left base end portions (24), and the other end of the left and right base end portions (24) from one end of the left and right base end portions (24) to the other end A circumferential groove (23) is formed, and the circumferential wall is formed in a vertical ridge shape on the left and right peripheral edge (22) of the dimple (21) by the depression of the left and right base ends (24) of the circumferential groove (23). A synthetic resin casing with a handle, on which the peripheral rib (22a) is formed. A pair of sets in which the main body (1) has a shape in which a vertical protrusion (5) protrudes from the center of the bottom surface (4) of the recess (3) and the handle (10) is arranged in parallel in an upright position A handle plate (11) is integrally provided between the upper and lower ends of the attached beam piece (12), and the pair of attached beam pieces (12) are undercut to the concave bottom surface (4) of the rod main body (1). The fitting protrusion (K), which is a strong assembling part, is formed in a projecting shape, and the vertical part of the rod main body (1) is formed by a part of the assembled beam piece (12) and the fitting protrusion (K). projection (5) were constructed the insert portion into the recess bottom (4) portion of the inner circle, claim 1 Symbol placement of the handle with a synthetic resin the bottle. One side forming a right angle is opposed to the fitting protrusion (K) in the vicinity of the corner formed by the opposing side surface (14a) and the tip end surface (13) of the pair of beam pieces (12). A fitting protrusion (17) having a substantially right-angled triangular cross section is provided so as to protrude substantially perpendicularly from the side surface (14a) and the other side substantially perpendicularly from the tip surface (13). A synthetic resin casing with a handle according to claim 2 .

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