ES2330677T3 - CLOSURE PLUG WITH SPRING CHANNEL AND SUPPORT RING. - Google Patents

Abstract

The present invention concerns a closure (10) consisting of a cap portion (1), a retaining ring (3), a tear strip and a snap hinge (20), the snap hinge connecting the cap portion and the retaining ring in a single piece along a first circumferential section, wherein the cap portion (1) has a top plate (14) and the closure having overall a substantially cylindrical or slightly tapered closure skirt which, inter alia, comprises a substantially cylindrical cap skirt and the retaining ring (3), wherein the snap hinge (20) is integrated into the skirt and wherein the retaining ring (3) and the cap portion (1), in addition to being connected via the snap hinge (20), are also connected together along a second circumferential section (30) via the tear strip (4) which is also integrated into the skirt. To produce such a closure but at low cost and preferably using only a little material, and in particular to provide improved protection of the inside of the closure against environmental influences, the invention proposes that the cap skirt, tear strip, snap hinge and retaining ring together define an essentially closed closure skirt wherein the tear strip and the ends of the snap hinge (20) in the circumferential direction are connected with the cap skirt and/or the retaining ring and optionally with one another via film-like, easily tearable lines of weakness.

Description

Closing cap with spring hinge and ring of support.

The present invention relates to a plug, composed of a cap piece, a support ring, a band starter and a spring hinge, which joins each other in a piece the hood piece and the clamping ring along a first contour section, presenting the hood piece a front plate and presenting the plug, together, a body of approximately cylindrical or slightly conical plug, which composes, among others, of a hood body approximately cylindrical and a support ring, the hinge being integrated spring in the body, and the ring of support and the hood piece in addition to the spring hinge also by the starter band, also integrated in the body, and precisely along a second contour section outside the sector required by the spring hinge.

An analogous plastic plug is known from the WO 03/057585. It is understood by spring hinge a hinge that, next to the closed position of the hood of the stopper, also presents a stable open position. Similar spring hinge has been configured, in the present case, of a piece with the hood and the support ring. The peculiarity of a spring hinge, from which the present invention comes, is that the spring hinge is integrated into a wall approximately cylindrical side of the cap cap, it is that is, a part of it forms the side wall approximately cylindrical This side wall can also be configured slightly conical or spherical and may present especially hollow spaces and fine structures, for example, in the form of weakening fillets, which define the limits or the flapper films between the various components (hood, starter band, hinge, support ring) of the cap.

The previous spring hinges are they also set closed and out of a first wall of the plug so that the plugs were effectively double wall in the region of the spring hinge, while the plug, from which the present invention proceeds, the hinge is integrated in the wall formed by the body of the hood and the support ring. This makes possible the manufacture of the hood of a piece in the closed state, applicable or ready for use. The plugs earlier with spring hinge should, on the contrary, be manufactured in an open state, spoiled, what it does virtually impossible integral manufacturing with a band bootable

The body of the hood and support ring not necessarily section circular transverse, but may have rather a section Discretionary, circular, elliptical or polygonal cross section. The effect of the spring hinge is achieved by at least one or also several thin, flexible wall sections and approximately linear, which basically run in the direction peripheral, of said hinge, to which sections of more solid and more stable wall shape. By configuration adequate is also able to provide the hinge of a property of "deadlock", that is, when opening the hood, the hinge opposes a certain resistance to the opening movement and the broken, but where, after overcoming a deadlock, it changes to a state, in which the elastic forces, which act within and in the hinge, drag the cap cap to an open position, spoiled. This "neutral property", that is, at minus an unstable cap position between at least two stable positions, which preferably define the closed state or a completely open state, where the hood, starting  from a stable first position, "jump" to a second stable position when exceeding the neutral, is the property characteristic of each spring hinge, as manifested also in the concept of "spring hinge".

The support ring fastens at the same time, the entire cap to the neck of a corresponding container, for Example, a bottle. The neck of the bottle presents, for this, in general an annular circumferential support flange. In the closed, initial position, the support ring attacks from behind the support flange of the neck of the bottle and thereby holds the cap to the neck of the bottle. The support ring has, for this, preferably a circumferential inner bull, that attacks behind the support flange. The guarantee band, which unites the cap cap and support ring, also has a function of security or guarantee, since it joins the hood mutually of the cap and the support ring, fixed to the neck of the bottle, to along an outside contour sector to the spring hinge so that the cap cap can only be opened after remove the safety band, that is, after undoing the union of the safety band with the cap and the support ring. After remove or start this starter band is the only union between the support ring and the cap cap the hinge of spring and the hood can be opened, as long as it tilts towards up and out with respect to the support ring around of the spring hinge, which extends for a certain small plug body sector.

An inner cap can be additionally provided or circular shutter bridge, whose outer diameter is insignificantly larger than the inside diameter of the neck of the bottle, with the cap closed fit inside the container neck and thus take care of a tightness of the inside of the container with respect to the outside.

In the well-known plug, the spring hinge runs through a first sector of the contour of the hood and the support ring, and the starter band runs for the most part of the remaining sector, and precisely on a plane respectively parallel inclined less than 90º respectively parallel to an axis of the cap, and at the same time maintains a certain distance to the sector of the spring hinge so that, between the ends of the starter band (peripheral view) and the ends of the spring hinge are holes in the body of the cap. This requires, on the one hand, a certain axial length of the plug, and the open areas between the starter band and the hinge can lead to the penetration of dirt, dust, germs and small animals, for example, insects, under the cap cap, of so that the mouth of the corresponding bottleneck is also exposed, if possible, to certain impurities or even germs, although the cap is completely closed and the safety band be intact

In addition, this well-known plug has, because of the inclination of the safety band with respect to a perpendicular to the axis of the plug, an axial length, which is greater than the sum of the minimum (axial) widths of the hood body, of the safety band and support ring.

Against this state of the art, you will be poses to the invention the problem of creating a plug with the features mentioned at the beginning, but which, however, it must be able to be manufactured with small cost and that preferably requires little material, and, above all, better protect the interior of the cap of the environmental agents.

This problem is solved by which body of hood, tear-off tape, spring flap and support ring jointly define a substantially closed cap body, where the starter band and the ends of the spring hinge, that point in the peripheral direction, be united by means of film type weakening fillets, easily tear-off with the hood body and / or the support ring and, given the case, mutually.

The body of the hood, the spring hinge and the support ring therefore form in the cap according to the I invent a closed cap body along the entire contour, provided that these parts all together are mutually united by medium thin films, set in one piece with the cap, that are at least partially easily torn. In addition, about the entire bootable band is joined on all sides only by easily tear films or weakening fillets plug material with the adjacent plug elements. In so much so that the starter band only extends over a part of the body sector, which is outside the spring hinge, they are also mutually attached to the hood or more exactly the hood body and the support ring directly by a thin film of material, which defines a break line. Also the ends of the spring hinge, oriented in peripheral direction of the plug, are connected with the parts adjoining, that is, with the starter band or eventually (also) with the cap body or with the support ring by an easily tear film or by a line of weakening Instead, the spring hinge is attached fixedly, in axial direction, with the cap piece and the ring of support, although with tilting movement.

The tear-off band has been configured in the cap of the present invention such that, starting from one end of the spring hinge, it extends fully peripherally along the remaining sector of the contour to the opposite end of the spring hinge and with it, there are no holes or intermediate spaces between the ends of the tear strip and the ends of the spring hinge. This makes it possible to manufacture a fully closed cap body, whose interior is better protected by environmental influences.
such.

In the preferred embodiment, the band Starter runs along the contour of the cap body basically parallel to the bottom edge of the support ring and of the front plate of the hood, with the exception of axial widening especially in the direction of the bottom of the hood to along minor contour sectors, for example, in the regions adjacent to the ends of the spring hinge and eventually also on the side, which is diametrically opposed to the spring hinge. This configuration allows a plug built axially short and saves space and material in Cap manufacturing. A plug constructed so too axially short also makes possible, in particular, a neck of very short bottle and therefore built with savings of material, being able to be the saving of material in the neck of the bottle much larger than in the cap itself.

According to claim 1, the starter band it comes from both sides to the spring hinge, being so wide its adjoining ends with the spring hinge as to that extend over the entire axial height of the hinge of spring, joining a break line formed by a film thin material the ends of the starter band and the spring hinge. Since the starter band is, so overall, narrower (has a lower axial height) than the Spring hinge, presents, for convenience, at its ends adjoining the spring flap respective extensions.

According to claim 1, the recesses or well the lines of weakening adjacent to the hinge of spring, which run axially, and the hinge extend within axial zones, which are otherwise caught by the Cap body, which must have a sufficient axial height for lace again for insertion into a bottleneck by means of at least a part of the contour. This axial height smallest possible of the cap piece should not fall below 2 mm and preferably has at least 3 mm, better yet at least 4 mm, mediated from the outer face of the faceplate. When it is, therefore, a "reach almost to the front plate" of the recesses and the spring hinge, means that the corresponding parts replace or save a part of the Hood body.

According to claim 1, the starter band it is joined with the two ends of the spring hinge, it is say, preferably by a thin film of material or by a tear line so that the tear-off band can or should be separated not only from the support ring and the hood of the stopper, but also of the two ends of the hinge of spring.

To separate the starter band, it is planned preferably a grip tab that, starting from a terminal section of the starter band, extends radially by outside the body of the cap and in the peripheral direction on the spring hinge and that is held near the body of the cap by medium of easily torn nerves, preferably in the area of the spring hinge.

Such a grip tongue is convenient, because otherwise it would take a tool to release The starter band. This pull tab of the starter band it can be joined, for example, by easy fracture nerves, with the cap or with the outer face of the spring hinge of the plug.

The configuration of the cap, according to the invention, ensures that the inside of the cap is fully encapsulated with respect to the outer space before the first use. Ok this in special, because the starter band is attached to the ring of support and cap of the cap, as well as its front faces, with the front faces of the support flap preferably by means of a thin film of easily tear-off material, instead of, as it is known in principle from the state current technique in other application cases, by a multiplicity of easily breakable junction nerves, among the that, however, there is a gap of separation, which would represent an opening between the outer face and the inner face  of the cap. Of course, which, if necessary, could also replace a part of the material films, which join the different elements of the cap, by a gap of separation, that it is bridged by easily tear junction ribs, to know, for example, at the junction between the support ring and the band bootable, when the bootable band is closely in contact with a container neck or cap neck, or eventually also with the front faces of the hinge of spring, where you could even give up the junction nerve, and, especially, then if the elements adjacent to the slit of separation remain in very close contact and preferably if They are in mutual contact.

At the same time, such a plug can be manufactured economically, because at least in its simple variants it can be manufactured by means of two relatively simple tools, only axially approximate by thrust, even when more complex configurations and corresponding tools are provided in some application cases . The hood body, the tear strip and the support ring form a continuous cylindrical or slightly conical wall or slightly expandable stepwise from the hood body to the support ring. For example, the body of the cap may have an outer diameter of about 36.5 mm, while the support ring has a slightly larger outside diameter of, for example, 39.5 mm, forming the tear strip and also the hinge jointly spring a conical transition from the hood body to the support ring. Insignificant notches, for example, on the inner bottom edge of the hood body, on the inner bottom edge of the support ring and also to configure weakening lines or film flaps in the spring hinge, can also be made without molds interiors of many pieces and can be practiced directly on the male of the inner mold, provided that these structures only have a small radial depth of, for example, less than 1 mm. The cap is then manufactured, for example, by injection into a two-piece mold, which is composed of an outer mold and an inner male, where the outer face has no noteworthy structures and, therefore, the outer mold can be Easily remove the subject plug due to simple notches in the inner male. After the outer mold has been separated, the inner plug can also be easily released, with the axially areas below the notches experiencing a slight widening during demolding which, however, is reversible due to the elasticity of the materials of the cap used
habitually.

When the starter band additionally has a gripping tongue, which extends parallel to the outer body or to the spring hinge of the plug, obviously the mold must be completed with the appropriate forming elements that, however, do not require expense additional exaggerated some and, if necessary, always allow the use of a tool of injection molding of two pieces, relatively
simple.

In the configuration according to the invention, configured the bootable band so that its zones adjoining the spring hinge extend simultaneously to the hood body or the proximity of the faceplate, and that they therefore form part of the body of the hood in this zone, as long as the starter band has not yet been removed. The starter band has widened, for convenience, simply at its two ends adjacent to the hinge of spring in axial direction to the front plate, for example, to along a length of 2 to 6 mm in peripheral direction, while the upper axial limitation of the starter band, that is, the weakening line formed between the band bootable and the hood body then runs again away from the faceplate and in the remaining area of the second remote sector, for example, 1 to 5 mm parallel to the front plate in peripheral direction. This distance from the line Folding between the starter band and the hood to the front plate corresponds then to the remaining axial length of the body of the hood. In short, the body of the hood is separated, by therefore, in the two areas adjacent to the peripheral ends of the spring hinge up to near the faceplate and is replaced by the extensions of the starter band. This is then especially advantageous if the spring hinge is extends substantially to the front plate.

They are essential parts of a hinge of spring, for example, two film-type joining lines, easily flexible of somewhat thinner material, which are indicated also as "movie hints" and that join each other relatively rigid adjoining material sections and more thick of the hinge and running basically in the direction peripheral, although they also have axial components so that are approximately in the center of the spring hinge relatively together with each other and then diverge in their journey further peripherally towards the ends of the hinge spring (in axial direction). The (three) thicker sections and rigid of the spring hinge are between the two hinges of movie or get together over the movie hinge upper and below the lower.

The layout of the top film hinge corresponds, for example, to the cutting of a lateral surface cylindrical with an inclined plane relative to the axis of the cylinder and runs, therefore, along a circular arc or said with greater elliptical accuracy in an inclined plane with respect to the faceplate with an arc center above the plate frontal, since the two ends of said film hinge arched approach to the faceplate. Movie hinge lower then describes, for example, an elliptical arc also, which also runs on an inclined plane with respect to the front plate, although with a center clearly below the front plate and, for example, also below the ring support such that the ends of the film hinge lower extend out of the faceplate and in the proximity of the support ring. The entire axial height of the hinge of spring is basically defined by the distance of the hinges of mutually divergent film to the ends of the hinge of spring. Obviously, this distance also depends on the entire measured width (in peripheral direction) of the film hinge and the diameter of the plug, but amounts to about 5mm in the case of a Typical plug with a diameter of 35 to 40 mm.

The measures described above, such as spring hinge that extends to near the faceplate and the starter band, which extend into partial sectors also close to the front plate, they make possible the manufacture of a suitable plug of very small axial dimensions of, for example, less than 15 mm, especially less than 12 mm, with a diameter of, for example, 35 to 40 mm. Thanks to that, it it can save a considerable amount of material for the plug and, especially, also for the corresponding neck of the container, where the cap in unopened state, that is, with the starter band intact, it is with all a tight, very stable plug, when, according to the preferred configuration, the hood body, the band Starter, the spring hinge and the support ring define a continuous cylindrical or conical cap body or partially conical without holes or interruption.

The operating mode of the spring hinge is You can describe as follows. The spring hinge is composes from top to bottom of a section bordering the plate frontal, which is approximately the shape of a section circular. The outer edge of this section is defined by the top film hinge, which runs in an arc. TO she attached a somewhat more stable flap section again, which is limited down again by a movie hinge Arc-shaped with opposite curvature. This more stable part of the spring hinge is therefore approximately in the form of an "X" lying with curved side lines in sight side.

At the same time, the spring hinge like this described in a plan view from above is also curved in a radial plane, that is, it forms the part of a cylindrical body (or also slightly tapered) of the cap.

This means that by lifting the hood of the cap, that is, when the cap is opened, after it has been removed the starter band, the effective initial axis of rotation, around the which tilts the cap of the cap, runs approximately in the Tangent zone in the central section of the hinge specifically inside the top film hinge and in the central area of it. The faceplate and body part of the hood in the form of a circular segment, bordering on the hinge of film of the body of the hood move so basically rigid as a unit around said axis. This gives rise necessarily to the two ends of the film hinge, that are at a distance from the initial axis of rotation cash, expand, while the flap rather store compressed in the central area, that is, where the two Movie hinge approaches each other to the fullest.

At the same time, it moves radially towards in the rigid union of the front plate with the shaped part of circular segment of the hood body of the central area of the hinge, while the ends of the hinge move radially out. The elastic expansion of the ends of the hinge as well as the compression of the central hinge area they cause at the same time an elastic recoil force in the sense of closure

However, as soon as the central part of the hinge, due to its radial movement inward, and the ends of the hinge, due to its outward radial movement, stay on a plane, the hinge is in a stalemate, and causes an additional tilt of the hood, so that the outer ends of the hinge are on the other side, it is that is, radially out of the course of the tilt axis effective, which always runs basically through the hinge of film in the central area of the spring hinge and parallel to a tangent to the body of the hood in this area. The elastic tensile forces, which act at the ends of the hinge, then cause a strengthening of the movement of opening.

It is understood that for a function in rule of a similar spring hinge, the ends of the hinge should be free in the area of the two film hints, which means for the purpose of the present invention that the ends of the starter band, which are joined in one piece with the ends of the spring hinge should also extend throughout the entire width of the spring hinge so that, after removing the band bootable, these ends are completely free. Further, It is especially economical in material that, as it has already been mentioned, the spring hinge extends to near the front plate and, accordingly, the starter band should extend for its part in the configuration described above, near the faceplate, in any case, in the vicinity of the hinge spring

In the remaining areas, it is appropriate that the Bootable band keep a sufficient distance from the plate front so that a corresponding body of the hood of the cap, which, on the one hand, stabilizes the hood and, on the other, has also fastening properties, and, for example, may present a small radial shoulder on its lower inner edge to attack from behind a radially domed edge out of a mouth of container and hold the hood solidly to it.

In a special embodiment of the invention, however, is provided that the starter band also approach the faceplate again in an opposite area diametrically to the spring hinge so that also in that area is a small section of the body of the hood a length of, for example, from 10 to 15 mm in peripheral direction. This recess in the body of the hood, which arrives preferably until the faceplate effectively forms a kind of grip tongue, on which you can hook easily with the fingertip to open the hood, that is, release it from the edge of the container hole.

For the rest, the bootable band has preferably a constant axial width of, for example, 2 to 3 mm, which only doubles approximately in the area near the ends of the spring hinge and in the area opposite the spring hinge, because the starter band extends there to or near the faceplate to, on the one hand, guarantee a smooth operation of the spring hinge, provided that its extremes have been released, and, on the other, to form a grip tab on the cap cap.

In addition, the bootable band must not extend necessarily in the mentioned areas until exactly the plate frontal, but, if necessary, can also be added a small section of the hood body in those areas, although the axial height of the cap body should be reduced in the half in the aforementioned widened areas of the starter band, in the case of a cap body of only a few mm (for example, 3 to 6) axial height, so that the functions mentioned above.

However, it can be formed alternately in the hood body or in the extension of the plate front a short grip tab on the face of the body of the hood opposite the spring hinge. In this case, I don't know obviously needs any recess in the body of the hood to form a grip tongue. This form of realization together with an internal holding bull in the body of the hood still to be described below.

Where the hood body has its maximum full height, that is, basically outside the hinge of spring and of the adjacent recesses of the body of the hood, the body of the hood has a bull projected inwards or a groove in the vicinity of its lower edge, which or the which can snag behind a corresponding highlight in the mouth of a bottleneck or similar.

A similar bull only preferably has the area opposite the hinge, where it is also found, if necessary, the grip tongue, its full radial thickness. The contour section, along which the bull has its maximum radial thickness, preferably comprises no more than 120 °, even more preferably not more than 90º and, especially, 60º maximum, the center of said section being diametrically opposed to the center of the spring hinge. The bull has with special preference, starting from a maximum value in a small section or well center point, a continuously decreasing thickness and runs as far back as possible in about 90º on both sides of the center point completely or even a minimum bull thickness.

This configuration has the advantage of a improved and safer sealing of the cap when closed again.  The user, who has taken and opened the cap, on the opposite side of the hinge, if necessary by a grip tab, and you want close the cap again, typically take it also when closing again only the part of the cap of the cap, which opposes diametrically close to the grip tab or to the hinge and press that side of the cap cap from above on the respective bottle or container neck, in the that the cap has been applied. As already mentioned, the edge top of said bottleneck, which has been sized for the application of a corresponding plug, has a support bull outgoing. By means of the pressure below the cap cap, slide the provided bull into the body of the hood, projected inwards, on the bull projected towards out on the edge of the bottleneck and snag it by behind. When, however, the bull projected inward is extend all the way around the body of the hood or, in in any case, along a sector of the contour of more than 180º, starting from the central point opposite the spring hinge, it would be exercised, however, only in the area of said central point or well in the area of the grip tongue a pressure from above on the front plate or the grip tongue, this can happen that, although the bull of the hood body slides away in the area of the grip tongue on the holding bull of the edge of the neck of the bottle, would rest, however, on the remaining areas, especially in those displaced approximately 90º with respect to the central point of the grip tongue, on the bull holding the edge of the neck of the bottle, without sliding moving away on him. In addition, the plug would bulge somewhat together in the center between the hinge and the grip tongue, no guaranteeing a new waterproof seal, mainly due to this deformation of the cap cap. However, because, according to preferred embodiment of the invention, the bull highlighted towards inside the body of the cap cap only has its maximum full thickness at one point or in a section in the vicinity of the grip tongue, that is, diametrically opposite to the hinge, which with increasing distance from this central area always decreases continuously and preferably at a distance of 90º of the central zone has reached a minimum value and, given the case, also disappears completely, the hood of the cap with the bottom of the hood over its total contour in the edge of the bottleneck, even if pressure is exerted from above the hood piece only in the tongue tab area grab At the same time, a radially prominent bull rests inward, given the minor case, which is at a distance of the grip tab, a slide over the bull from the edge of the bottleneck only against such low resistance so that it does not lead to a bulge of the cap cap on the central area between the hinge and the handle tongue.

It is also planned, for convenience, a Circumferential annular obturator nerve over the frontal plate, the which has been sized so that it fits inside a bottleneck or a container hole and, by consequently, act as a closure plug, and have, for convenience, an toric highlight along its outer contour, serving as a seal on the inside surface of a corresponding bottleneck, and that therefore has to have a outer diameter, which is insignificantly larger than the inside diameter of a bottleneck or opening tube correspondent.

In a specific embodiment, it has been manufactured the cap for a 33 mm diameter bottleneck inside and 35 mm outside diameter, where, as already mentioned, the outer diameter of the inner sealing nerve in the region of the bull is, according to it, somewhat larger than 33 mm, for example, 33.5 mm, and the inner edge of the hood body (not fully circumferential) has an inside diameter of, for example, 35.5 mm

For purposes of the original disclosure, it is done emphasize that all features, such as this description, drawings and dependent claims put manifest to a specialist, even if they were described specifically in relation to certain characteristics additional, can be combined both individually and also in discretionary combination with other features or groups of features revealed here, provided that it had not expressly excluded or what technical particularities of such combinations make it impossible or meaningless. Here you give up the broad, explicit representation of all combinations of characteristics imaginable only for the sake of brevity and readability of the description.

Other advantages, features and possibilities of use of the present invention will be understandable due to the following description of a preferred embodiment and of the corresponding figures. The following figures show it:

Figure 1 a side elevation of a form of realization of a cap applied to a bottleneck,

Figure 2 a side elevation of the cap according to the Figure 1, seen from the side of the spring hinge and without grip tab for the starter band,

Figure 2a a section through the cap of the Figure 1 according to the D-D plane of cut of the figure 4,

Figure 3 a side elevation according to Figure 2, although with the pull tab of the starter band, which covers partially the spring hinge, having represented the left part of the plug in section,

Figure 4 an axial section view according to the C-C plane of Figure 1,

Figure 5 an axial view from above on the plug,

Figure 6 a sectional view through the cap applied to a bottleneck,

Figure 7 a detail of the sectional view of figure 6,

Figure 8 one more detail of the sectional view according to figure 6, and

Figure 9 one more detail according to circle E of Figure 2a.

The plug is distinguished in figures 1 to 6 indicated in conjunction with reference 10, which is composed of a cap 1, a support ring 3 and a band 4 removable, arranged between the cap 1 of the cap and the ring 3 of support. The starter band 4 mutually joins the ring 3 of support and cap 1 of the cap by means of a line of weakening, in each case, indicated by reference 15 or 19. The weakening lines 15, 19 are made up of sections of the body of the cap in a way that goes from the fillet to the strip, tuned as a movie. As noted, the plug is widen something stepwise from top to bottom, especially in the region of the starter band 4, the body 2 being the hood, the starter band 4 and the support ring 3 basically cylindrical by themselves. The support ring 3, which has a inner diameter somewhat smaller than a clamping flange 32 protruding radially outward from bottle neck 30 (see Figures 3, 6, 7 and 8), attack underneath said flange 32 and fasten, thereby, the plug 10 together on the flange 32 or shoulder protruding out of a bottleneck 30 or a tube of mouth.

From the front plate 14 also extends a partition 18 circumferential annular shutter (see figures 2a and 3), which presents a small bull for its external environment circumferential, which fits as a shutter bull inside a corresponding bottle neck 30, when the cap has seated on the bottleneck and the cap 1 is closed.

Also the body 2 of the hood has in its lower edge a small shoulder 12 (see figure 7) directed inward, which can attack below an edge 33 of ratchet domed out of the neck 30 of the bottle for securely hold the hood 1 in a closed state over a mouth container, even when the removable band 4 has been removed and the hood is attached to the support ring 3 only by the 20 hinge spring.

Figure 3 shows an exterior view of the cap in the area of the spring hinge, partially covered in the Figure 3 by the tongue 13 of the pull-out band 4, where two lines of weakening or hinges 6, 7 of film, which form the spring hinge 20 with section 8, which is in between, and sections 16, 17 adjoining above and below, and that have been indicated with arc dashed lines. As can be seen, said film hinges 6, 7 run from arched shape so that they have a reduced mutual distance approximately in the center of the hinge 20, and diverge towards outside at the ends of the hinge. Between these two hinges 6, 7 film is a nerve 8 somewhat more solid than, for consequently, it narrows in the center and widens towards its two extremes while movie hinge are limited on the other hand, on the one hand, by a section 17 widened in arc shape of the support ring 3 and, on the other hand, by a arched part 16 of the body 2 of the hood, additionally reinforced by an approximately rectangular 9 socket, which hinge also cooperate in the hinge spring action 20, while forming a relatively rigid joint of the hinge with support ring 3. The ends 21, 22 right e left of the spring hinge 20 are defined by joints thin, film-shaped and easily tear-resistant the adjoining sections of the starter band 4, which presents axial widening in its sections adjacent to the ends 21, 22, which fill corresponding recesses 25 of the Hood body. To prevent a start of the hinges 6, 7 of film, also of relatively thin walls of the Spring hinge, from ends 21, 22, are provided in the two sides of the spring hinge 20 directly in front of the ends 21, 22 a 23 terminal reinforcements, which separate the ends of the hinges 6, 7 of film of the ends 21, 22

This type of hinge has the property that, by raising or by folding up the cap 1 of the cap, elastic recoil forces first have the tendency in the hinge to move the hood back back to the state closed, although transforming the elastic forces, after overcome a stalemate, in an active force towards the hole so that the cap 1 is then held in the uncovered state

As you can easily imagine with the observation of figures 1, 2, 6 and 8, the side elevations and the axial cuts, which run through the hinge 5, show through the cap, the front plate 1 and the body 2 of the cap, which is formed in the hinge zone 20 by section 16 arc delimited, they form a relatively rigid unit in the case of an upward rotation of the hood 1 in the direction of arrow A of figure 8. The axis of rotation of the cap is, at first, in the vicinity of nerve narrowing 8. As recognized from Figure 8, the central section of the hinge 20 or nerve 8 moves radially inward, by tilting the hood 1 upwards, and it is compressed by it, while moving the outer marginal sections or the ends 21, 22 of the hinge 20 radially outward and are widened at the same time, which causes elastic forces back. The neutral is defined by the nerve 8 of the center of the hinge pass the plan drawn in radial direction between the two ends 21, 22 of the hinge and then jump radially inward while the ends 21, 22 of the hinge 20 move radially outward so that the nerve 8 and ends 21, 22 are on top of each other in view according to Figures 6 and 8 and finally pass along next to each other, and exert an elastic force beyond the neutral point, which drags the hood towards the position of the mouth.

This should ensure that it cannot be spilled. liquid from a bottle without having to keep the hood of the evacuation mouth, so that the effluent liquid does not run against the hood and deviate uncontrollably and spill So.

In plan view from above from outside according to figures 1, 2 and 3, exactly the traced or the contours of the strip 4. Band 4 bootable is widened in the area bordering on the ends 21, 22 of the spring hinge 20 in axial direction in the width of the body 2 of the hood and penetrates with its extensions 5 in said area to the front plate 14 and leave completely free, with it, the ends 21, 22 of the spring hinge 20, after removal of the plug.

It is understood that in a hinge and a band bootable with a greater distance to the faceplate, the body of the hood must not present any kind of recesses 25 respective.

A particularity of the cap represented in the figures is that, before the first use, that is, in the state represented in figures 1 to 8, is completely closed all over. As recognized, hood 1, band 4 starter and support ring 3 are mutually joined by break lines 15, 19, which are formed by sections of the cap material refined as a film in the form of fillets or girdles. Another break line, which is also formed by a thin, film-like material, runs along the ends 21, 22 of the spring hinge 20. When removing the band tear-off, the grip tongue 13 is taken first, being torn bridges or nerves (not shown here) easily folding, joining the tongue 13 with the outer face of the spring hinge 20. By sufficiently strong traction of the gripping tongue 13, the material of the stopper along line 22, which defines one end of the spring hinge, with which the widened end of the grip band 4 provided with the grip tab 13. By traction of the grip tongue 13, then tear considerably the lines 15, 19 of rupture until the widening 5 of the starter band 4, which is attached to the end 21 of the hinge 20 spring. Finally, the break line is torn along from end 21. After this, band 4 is completely removed removable from the cap and also considerably separate one of another the cap 1 and the support ring 3 and are attached only by the spring hinge 20.

However, in the unopened form, represented in figures 1 to 3, the cap is closed everywhere and also the support ring 3 preferably rests, when attacks underneath the protrusion 32 of the neck of the bottle, in said shoulder 32 and rest, in addition, preferably on edge 31 of the flange, which is below, so that the inside of the cap, at least above the support of the support ring 3 with the flange or shoulder 32, is closed out at least dustproof mode.

Also the starter band 4 is stuck closely to the flange 32 of the neck 30 of the bottle so that the thin film of material from line 19 of rupture, if necessary, also by a separating groove, which it is only bridged by separate nerves, easily torn between the tear-off tape and the support ring without, therefore, the dust tightness is affected from the flange 32 Exterior.

In an embodiment not shown here, the starter band has widened again in the direction axial on the side opposite the spring hinge 20 in an amount equal to the height of the body 2 of the hood and arrives here too up to the front plate 14 so that the body 2 of the hood, After removing the starter band, it also has a recess in this area, which effectively leaves a grip edge free, since in this area the front plate 14 is free and can be take by its free edge. This facilitates the manipulation of the cap, since cap 1, as already mentioned, presents in the part inside of body 2 of the hood one or more highlights 12 toric, which attack behind the edge of the neck of the bottle arched out and thus oppose some resistance to hood opening 1.

However, in the embodiment preferred represented in the figures, a tongue has been formed  11 grip outside on the body 2 of the hood.

As recognized in Figure 6 and, in special in detail according to figure 7, the body 2 of the hood  has a shoulder or a pawl edge 12 on its lower edge highlighted radially inwards, to which it attacks from behind a shoulder or leading edge 33 of corresponding ratchet highlighted towards outside on the upper edge of the bottleneck 30. Said highlight 12 extends, as can be recognized in Figure 4, by a relatively small contour sector of less than 60º, whose center diametrically opposes the center of the hinge 20 of spring. However, the contour sector, by which it extends ratchet edge 12 may also be significantly larger and have, for example, 160º or even 270º, where then the radial thickness of the ratchet edge, especially in areas displaced approximately 90º from the center of the Spring hinge should be clearly smaller than in the area diametrically opposed to the spring hinge. This edge of ratchet or bull 12 has, in particular, its radial thickness greater in the central area diametrically opposed to the spring hinge 20. In the contour sections furthest from this central area, in especially in contour sections that are approximately 90 to 120º from the central zone, bull 12 has a radial thickness noticeably smaller and, if necessary, also disappears completely. This is clearly shown in the sectional representation of the embodiment shown here in figures 2a and 9, respectively showing a section and a corresponding E detail along a plane D-D, which is displaced 90º from the center of the spring hinge. As noted, it has not been planned in this ratchet edge zone some in body 2 of the hood.

It has been shown as convenient that the thickness bull 12 radial narrows either continuously or stepwise from the center opposite the spring hinge 20. For example, him outline of the radial thickness contour of shoulder 12 could have a sickle-shaped path, adapted in dimensions but similar to the axial view according to figure 2 that the grip shoulder 11, really extending this shoulder or bull 12 radially towards inside unlike the tongue 11.

Obviously, others are imaginable too traces and shapes of the ratchet edge or of bull 12 as, for example, it can be recognized in figure 4, where the ends of a bull 12 decrease from a previously constant thickness to along an oblique step, rounded and transformed into the Hood body wall.

In unopened state, that is, as long as the band 4 bootable is still intact and is connected with ring 3 of support and cap 1, the cap is completely closed by its outer face, and there is no genre of open spaces, holes or indentations between the grommet band 4, on the one hand, and the support ring or the body 2 of the hood, on the other, in those who could penetrate any kind of impurities.

Accordingly, it cannot penetrate any type of impurities inside the plug, which is formed, together, by the support ring 3, the starter band 4 and the hood 4 of the cap. After removing the starter band 4, it is also guaranteed a good seal for the inside of the container because the circumferential annular shutter wall 18 has a bull corresponding exterior, which fits tightly with the inner surface of the bottleneck while the body 2 of the hood fastens securely, with its shoulder 12 projected inward, the cap 1 of the cap by its edge Inner bottom in the mouth of the container.

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The cap according to the invention is characterized by a relatively simple structure and for its ability to manufacture it and can be manufactured closed, in particular, in the form represented in Figures 1 to 9. In addition, it only requires little material, being able to perform the essential parts support ring, starter band and hood or hood body, very short in axial direction so that the plug with a diameter of 38 mm does not exceed, in total, a height of, for example, 12 mm, missing respectively 4.5 mm of the height of the support ring and the hood body (including the faceplate), and being claimed the remaining part by the starter band, which I could configure, no doubt, even narrower in principle, though also requiring, on the other hand, the spring hinge one certain axial height, so that it would no longer have any influence noteworthy in the total height of the cap a reduction additional width or axial band height bootable This axially short construction form acts even more advantageously in saving material with a container neck short, correspondingly adapted.

Claims (15)

1. Cap (10) composed of a cap piece (1), a support ring (3), a tear-off band (4) and a spring hinge (20), which joins together forming a piece of the cap piece and the support ring along a first contour section, the cap part (1) presenting a front plate (14) and the cap together presenting an approximately cylindrical or slightly conical cap body, which is composed, among others, of an approximately cylindrical cap body (2) and the support ring (3), the spring hinge (20) being integrated in the body, and the support ring (3) and the piece (3) being mutually joined 1) of the hood together with the spring hinge (20) along a second contour section (30) by means of the tear-off band (4) also integrated in the body, characterized in that the hood body, tear-off band, hinge spring and support ring together define a basic plug body closed entity, where the starter band and the ends of the spring hinge (20), oriented in the peripheral direction, are joined by means of easily tear-off weakening fillets of film type with the cap body, and / or with the ring of support, and if necessary mutually, joining the starter band with the two ends (21, 22) of the spring hinge (20) and extending over the entire section of the remaining contour except with the spring hinge of the plug body; the spring hinge or a flap (6) of the hinge film (20) spring less than 2 mm, preferably less than 1 mm, from the front plate (14); extending the starter band, with its terminal sections adjacent to the spring hinge, substantially up to the upper edge of the spring hinge and all its axial height and having a recess in the case of the hood, in each case (25 ), which reaches up to the front plate on both sides of the spring hinge, which is filled with the terminal sections (5) of the starter strip. 2. Cap according to claim 1, characterized in that the starter strip, with the exception of its terminal sections adjacent to the spring hinge, has an axial height less than the spring hinge. 3. Cap according to one of claims 1 or 2, characterized in that a pull tab of the tear strip extends, starting from a terminal section of the tear strip, radially out of the body of the plug and in the perimetral direction by the hinge of spring and is held by easily tear strips, preferably in the area of the spring hinge, near the body of the cap. 4. Cap according to one of claims 1 to 3, characterized in that the starter strip runs in its opposite area to the spring hinge with its upper edge in the vicinity of the front plate (14). 5. Cap according to one of claims 1 to 4, characterized in that the spring hinge or the film hinge (6) of the spring hinge (20) reaches less than 1 mm from the front plate (14). 6. Cap according to one of claims 1 to 5, characterized in that a recess is provided, which reaches up to near the front plate, in the body of the cap diametrically opposed to the spring hinge, which is filled by the tear-off strip in the case of intact plug. 7. Cap according to claim 6, characterized in that the recess diametrically opposed to the spring hinge extends through an angular sector between 20 ° and 60 °, preferably between 30 ° and 40 °. 8. Cap according to one of the preceding claims, characterized in that the height of the body (1) of the cap, measured in axial direction, in the region of at least one of the recesses (25) has been reduced by at least half, preferably at least 75% of the height in the areas located outside the recesses and, especially, up to a distance of less than 1 mm from the inner surface of the front plate. 9. Cap according to one of the preceding claims, characterized in that the structures provided in the cap body and between the body sections have a small radial depth of less than 2 mm, preferably less than 1 mm. 10. Cap according to one of the preceding claims, characterized in that the tear-off band (4) maintains, in most of the second remaining contour sector next to the spring hinge (20), a distance to the front plate, which ascends by at least twice the distance in the sector sections, which reach the proximity of the faceplate. 11. Cap according to one of the preceding claims, characterized in that the distance of the tear-off strip from the front plate (14) in the sectors, which reach the proximity of the front plate, amounts to a maximum of 1 mm and outside those sectors amounts to at least 2 mm. 12. Cap according to one of claims 1 to 11, characterized in that the axial height of the cap amounts to a total of less than 15 mm and preferably a maximum of 12 mm, of which, outside the recesses, slightly more than one third corresponds in the support ring and the hood body and slightly less than a third, in the starter band, respectively. 13. Cap according to one of claims 1 to 12, characterized in that the body of the cap has a recessed support bull (12) in the outer area thereof. 14. Cap according to claim 13, characterized in that the support bull (12) has, in the areas located as far as possible from the spring hinge, a radial thickness greater than in an area of approximately 180 ° contour in whose center it is the spring hinge. 15. Cap according to one of claims 1 to 14, characterized in that the support ring (3) in its inner part and in the vicinity of its lower edge has a support bull (9) protruding inwards or that conically narrows towards down.