CN1027057C

CN1027057C - Pot shaped container made of synthetic resin

Info

Publication number: CN1027057C
Application number: CN90104501A
Authority: CN
Inventors: 太田显穗
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 1989-07-07
Filing date: 1990-07-07
Publication date: 1994-12-21
Anticipated expiration: 2005-07-07
Also published as: EP0441966A4; JP2524264Y2; MY109492A; KR0172957B1; CN1049005A; AU647744B2; AU5936890A; DE69014589T2; WO1991000832A1; EP0441966B1; EP0441966A1; ATE114586T1; CA2035902A1; ES2066211T3; KR920701006A; JPH0319848U; DE69014589D1; CA2035902C

Abstract

A bottle made of synthetic resin is composed of a body and a stand to keep the bottle upright stably. The bottle body (1) is made of synthetic resin by biaxial stretching blow moulding, inwardly recessed at the bottom central part (6), and provided with a wide engagement groove (4) formed around the outer periphery. The stand (7) is a short cylinder nearly equal to the trunk (2) of the body (1) in outer dia. and the upper half is an engagement cylinder (9) to be engaged with the groove (4) of the bottle body (1). The lower half is a cylindrical leg (8) positioned below the lowermost end of the bottom (3) of the bottle body when engaged with the bottle.

Description

Pot shaped container made of synthetic resin

The present invention relates to a kind of relatively large pot shaped container made of synthetic resin.

The acrylonitrile resin of twin shaft stretching blow moulding or the tan-shaped container of polyethylene terephthalate system are utilized in a large number owing to its good mechanical strength and the transparency are former.

The pot shaped container made of synthetic resin of this twin shaft stretching blow moulding has substantially: it is outstanding to improve its compressive resistance, to load onto the tan-shaped container that end cover that foot is provided forms in the bottom to make the bottom be the hemisphere arcuation; And do not adorn middle body that end cover makes the bottom and cave inward and form the tan-shaped container that foot forms from being at the tan-shaped container body.

Form the tan-shaped container that foot forms at tan-shaped container body self, compare with the tan-shaped container that end cover is housed, clean, the sterilization treatment moulding and assembling is handled and the overall appearance style aspect be good.

But, when tan-shaped container body self formation foot forms tan-shaped container, compare with the cylindrical shell of tan-shaped container body part, play and realize keeping the floor space of the upright essence that acts on of tan-shaped container on the contrary little, thereby the problem that can't obtain to keep the stable tan-shaped container of self erecting that exists.

That is to say, in the crooked flip portion that forms that the bottom is caved inward during as foot, because this foot is that blow molding forms, so nadir of crooked flip portion, be positioned at that more the inside is a little than tan-shaped container cylindrical shell outer circumference surface, therefore for the tan-shaped container required floor space of posture of being kept upright is also diminished with regard to corresponding.

Moreover, make when tan-shaped container body self forms foot and forms tan-shaped container, in case when producing high interior pressure, owing to produce bigger dilatational strain at the place, bottom that forms foot, thereby have therefore distortion and reduce the capability problems of being kept upright significantly, and also this sometimes dilatational strain might develop into irregular deformation.

In addition, in order to make tan-shaped container have stable self-support function, and cover at the end that the tan-shaped container body is installed, because becoming the bottom of the tan-shaped container body of mounting object is hemispherical outstanding structure, so it highly has to become bigger, thereby end cover accounts for tan-shaped container single-piece aspect ratio and becomes big, and existence can not be given full play to the shortcoming of the good profile effect that tan-shaped container should have; And, there is not ability to prevent the bottom expansion irregular deformation that causes because of interior pressure yet.

In addition, with the large-sized double-shaft stretching blow moulding tan-shaped container of acrylonitrile resin moulding, the problem of existence is because the Dent resistance of bottom is abundant inadequately, slips out of the hand for this reason and is easy to just make the bottom to produce be full of cracks when falling down.

Therefore, the present invention is to provide inwardly overturn depression and forming in the tan-shaped container of foot of bottom center for solving the variety of issue of above-mentioned existence, its objective is, forms stable foot on this tan-shaped container; Simultaneously, prevent the expansion irregular deformation of the bottom that produces because of interior pressure, and then improve the impact strength of the bottom of tan-shaped container.

Be the pot shaped container made of synthetic resin of the present invention that achieves the above object, the cylindrical shell that comprises the tan-shaped container body, the assembled portion that the assembling chase constitutes that forms outer week Monday along the spherical bottom of cylindrical shell is carried out stack-mounted pin cylindrical shell on above-mentioned cylindrical shell, above-mentioned assembled portion has the assembling chase, above-mentioned pin cylindrical shell is by the assembling sphere that contacts with above-mentioned chase, have following ora terminalis at above-mentioned sphere and form the tip shape and be connected and fixed the pin cylindrical shell first half of bar and make its lower end be positioned at the following bottom pin cylindrical shell lower part composition of the spherical bottom of above-mentioned cylindrical shell, above-mentioned pin cylindrical shell is to have and the external diameter of the above-mentioned cylindrical shell cylindric pin cylindrical shell of external diameter about equally.

Assembling chase forming on the outer peripheral face of the bottom of tan-shaped container body makes the more down dark more structure of trench depth.

Owing to be formed on the outside of the bottom that is dome shape with will assembling the chase recess, therefore, forming on the assembling cylindrical shell of the pin cylindrical shell that contacts at the ditch bottom surface formation face that assembles chase therewith, assembling sphere as Internal Spherical Surface, form the upwards structure of expansion, thereby as long as be pressed into the pin cylindrical shell from the top the bottom of tan-shaped container body, the inner peripheral surface side of the assembling cylindrical shell of pin cylindrical shell part just is entrenched in the assembling chase, has just finished the assembling of pin cylindrical shell to the tan-shaped container body.

With the pin cylindrical shell is chimeric when being assemblied in this tan-shaped container body, the assembling chase more toward below, the degree of depth of its ditch is just dark more, if the costa colpi place below the assembling chase, form the bigger bulge of bulging, then corresponding to the assembling chase that deepens, and form the bar that is connected and fixed of projection in the assembling sphere lower end of the assembling cylindrical shell of pin cylindrical shell, can be securely fixed in this bulge place, by being connected and fixed bar fixing to this bulge, make the pin cylindrical shell become very firm to the chimeric assembling of tan-shaped container body.

Because the pin cylindrical shell is to finish outside stack-mounted by being embedded on the outer circumference surface that is the dome shape bottom, so, big even the interior pressure of tan-shaped container body becomes, because the big interior pressure of this change of pin cylinder bearing, thereby the bottom can not produce dilatational strain because of interior pressure.

And, since the lower edge of pin cylindrical shell be positioned at always the bottom lower edge below, so, the lower edge of this pin cylindrical shell becomes the foot of the tan-shaped container of formation, and is by the foot that this pin cylindrical shell constitutes, irrelevant with the dilatational strain of bottom, can often keep certain form, bring into play upright function.

Moreover, because this tan-shaped container forms the pin cylindrical shell by other object and constitutes foot, therefore when dropping, impact the bottom that can not directly act on the tan-shaped container body, the pin cylindrical shell often plays the effect of buffer body, thereby, even the occasion of this body and function of tan-shaped container acrylonitrile resin moulding, the good tan-shaped container of Dent resistance bottom obtaining.

Fig. 1 represent one embodiment of the invention only to the front view of the semi-section longitudinally of pin cylindrical shell;

Fig. 2 is the amplification longitudinal diagram of Fig. 1 circle circumferential portion.

The contrast accompanying drawing is illustrated one embodiment of the invention below.

In Fig. 1, the 1st, the pot shaped container made of synthetic resin body of twin shaft stretching blow moulding, the bottom 3 of moulding that fuses, cylindrical shell 2 lower ends of tan-shaped container body 1 therewith, the recess 6 that forms by its middle body is caved inward forms the part of playing over as foot's function around it.

Below, with reference to Fig. 2, on the outer peripheral face of the bottom 3 that is dome shape, the part of promptly contiguous and barrel 2 junctions hollowly is provided with the assembling chase 4 of vertical broad around it, and downward more its trench depth of this device chase 4 increases more.Therefore, on the downside furrow rim of assembling chase 4, form the bigger bulge 5 of bulging.

For this tan-shaped container body 1, with pin cylindrical shell 7, integral body is made the short cylinder shape, the inner peripheral surface that its first half is promptly assembled cylindrical shell 9 promptly assembles sphere 10, become sphere with the ditch bottom surface same curvature radius that assembles chase 4, at the inner peripheral surface lower end of the assembling cylindrical shell 9 that forms this assembling sphere 10, what the projection setting was fastened on assembling chase 4 lower edge places is connected and fixed bar 11.

Therefore, the inner peripheral surface of pin cylindrical shell 7 becomes the step shape part that forms on the boundary part of assembling cylindrical shell 9 and pin cylindrical shell 8, and when being assemblied in 7 embeddings of pin cylindrical shell on the bottom 3, bulge 5 does not hinder assembling.

Owing to will be connected and fixed bar 11 is to form to be the outstanding cross-section structure of tip shape, be relatively to be easy to generate elastic deformation, and, make assembling sphere 10 be upwards expansion, at bottom pin cylindrical shell 7 chimeric being assemblied in 3 o'clock, this assembling sphere 10 becomes spigot surface, tan-shaped container body 1 and pin body 7 correct guidances are arrived the position of assembling mutually, then, rely on the strong power of being pressed into, be connected and fixed bar 11 and flexibly cross bulge 5, finished the chimeric assembling of 7 pairs of tan-shaped container bodies 1 of pin cylindrical shell.

Be assemblied in the pin cylindrical shell 7 of bottom 3, rely on this fixation that is connected and fixed 11 pairs of bulges 5 of bar, can firmly keep assembling tan-shaped container 1.

Because even the synthetic resin forming materials that these pin cylindrical shell 7 usefulness Dent resistance are good in the occasion with acrylonitrile resin moulding urceolus vessel 1, to the bottom 3 of the tan-shaped container body 1 that also can adequately protect from exterior impact.

The present invention is because above-mentioned structure has following positive effect.

Since with the pin cylindrical shell because to make with tan-shaped container body maximum outside diameter partly be the short cylinder shape of the roughly the same external diameter of the external diameter of cylindrical shell, the lower surface below this short cylinder as instep, be used in the upright floor space of maintenance tan-shaped container and become big, thereby can stablize the orthostatism that keeps tan-shaped container.

Make the height of pin cylindrical shell, only a little big than the bottom that middle body is caved inward, so compare with the height of the tan-shaped container body of lengthwise, it highly can be fully little, thereby can reduce the impact that the pin cylindrical shell brings tan-shaped container integral body.

The pin cylindrical shell is chimeric being assemblied on the outer peripheral face of bottom, so can prevent from occurring in because of the intrinsic interior pressure of tan-shaped container the big irregular dilatancy of bottom, can fully improve thus this internal pressure-resistant degree that the bottom center part inwardly is the tan-shaped container body of the overturn structure that caves in.

The assembling of the relative tan-shaped container body of pin cylindrical shell, because by simple chimeric the realization, so the assembly manipulation of tan-shaped container and pin cylindrical shell is simple, and both assemblings are that the mutual guiding by both opposed parts realizes, thereby can correctly finish.

The pin cylindrical shell is by with the molding synthetic resin with resistance to impact good cushioning effect, so can keep the bottom of tan-shaped container body not to be subjected to the impact of external impact, even thereby with the material of the poor impact resistance occasion of acrylonitrile resin moulding urceolus vessel for example, also can make the strong tan-shaped containers such as anti-drop impact.

Claims

1, pot shaped container made of synthetic resin, the cylindrical shell (2) that comprises tan-shaped container body (1), on cylindrical shell (2), carry out stack-mounted pin cylindrical shell (7) along going up the assembled portion that the assembling chase that forms constitutes a week on the outer peripheral face of the spherical bottom of cylindrical shell (2), it is characterized in that, above-mentioned assembled portion has assembling chase (4), above-mentioned pin cylindrical shell is by the assembling sphere (10) that contacts with above-mentioned assembling chase (4), have tip shape that the following ora terminalis at above-mentioned sphere (10) forms and be connected and fixed the pin cylindrical shell first half (9) of bar (11) and make its lower end be positioned at following bottom pin cylindrical shell lower part (8) composition of the spherical bottom (3) of above-mentioned cylindrical shell (2), above-mentioned pin cylindrical shell (7) is to have and the external diameter of above-mentioned cylindrical shell (2) the cylindric pin cylindrical shell of external diameter about equally.

2, container according to claim 1 is characterized in that the degree of depth of the past more hyposulculus of described assembling chase (4) formation dark more.