DE102010055303A1 - dispenser bottle - Google Patents

Abstract

In the case of a dispenser bottle (1), locking elements (21) and support areas (27) are provided alternately on a bottle neck (4) in the circumferential direction (23) and locking receptacles (22) corresponding to the locking elements (21) for manufacture are provided on a closure cap (2) to form a snap connection between the closure cap (2) and bottle neck (4) and the support areas (27) corresponding material-weakened peripheral sections (24), the material-weakened peripheral sections (24) lying flat on the corresponding support areas (27) in the assembled position.

Description

The invention relates to a dispenser bottle, in particular in overhead construction, with a cap sealingly arranged on a bottle neck of a bottle body.

Such dispenser bottles are known and enjoy great popularity because of their ease of use.

Just by the overhead construction, that is, by an embodiment of the dispenser bottle, which allows a use position in which the cap is positioned at the lower end of the dispenser bottle, there is the problem of creating a seal between the cap and the bottle neck, which in the long term stays tight. For this purpose, it is known to provide the bottleneck and the cap with mutually corresponding threads, which cause a sufficient contact pressure between the cap and bottle neck in the screwed state. However, threads always have the disadvantage that liquids can creep out of the dispenser bottle along the required slopes.

As an alternative to screw caps snap closures are known in other bottle shapes, which often realize by the snap connection and a sealing. Experiments have shown that such snap closures are often unable to ensure the extreme requirements of overhead installation to the tightness.

The invention has for its object to provide a dispenser bottle with a suitable for overhead mounting closure.

To achieve this object is inventively provided in a dispenser bottle described above, that at least one latching element is formed on the bottle neck, which engages in the use position in a corresponding locking receptacle on the cap and a close concern of the cap on the bottle neck causes the cap in the circumferential direction offset to the locking receptacle in a peripheral portion of a material weakening is formed and that at the corresponding in use position to the material weakening circumferential position on the bottleneck a support area is formed such that the material-weakened peripheral portion of the cap rests in the use position on the support area. By forming a material weakening of the cap, it is possible to give the cap sufficient elasticity to snap the locking receptacle over the locking element, and at the same time to provide the cap in the locking receptacle sufficient stability, so that the connection between locking element and locking receptacle permanently remains stable and does not or only slightly gives way. Due to the design of the support region, it is achieved that the closure cap also remains substantially dimensionally stable in the area of material weakening over a relatively long period of time. In simple terms, therefore, the material weakening is replenished by the support area as soon as the locking element is positioned in the locking receptacle. As a result, the elasticity of the closure cap in the weakening of the material is neutralized, at least for deformation efforts directed inwards towards the bottleneck. In the use position, therefore, the cap is placed on the neck of the bottle and absorbs it in itself, and a shrinkage of the cap in the weakening of the material is prevented by resting on the support area. Thus, it is easily achieved that the cap can not or only slightly deform over time, so that the closure remains tight over a longer period of time, which makes the dispenser bottle suitable for overhead use.

For a simple assembly is provided that the locking element and the corresponding locking receptacle form a snap connection. The cap is thus no longer nondestructive detachable from the bottleneck after snapping. Thus it can be ensured that the bottle is not refillable. This is remarkable, for example with regard to product liability.

The cap can thus be permanently connected to the bottle body in the mounted position. An insoluble compound is understood to mean a non-destructively releasable connection.

It can be provided that the latching element is designed as a ring segment. Preferably, this ring segment is axially aligned to ensure a uniform distance from an edge of an opening of the bottle neck.

The use of ring segments offers the advantage that a uniform hold of the closure cap can be ensured over a peripheral region of the bottle neck.

For uniform recording of the locking element can be provided that the locking receptacle is formed as a groove segment. Preferably, the groove segment is axially aligned, whereby a constant in the circumferential direction in the use position Distance to the edge of the opening of the bottle neck can be respected.

For a uniform development of the contact pressure between the closure cap and the neck of the bottle, it can be provided that at least two detent elements, which are spaced apart in the circumferential direction, are formed on the bottle neck and at least two corresponding detent receptacles on the closure cap.

It is particularly advantageous if these locking elements are formed on opposite sides of the bottle neck.

In order to achieve a favorable elasticity of the closure cap in the region of the material weakening, it can be provided that the material-weakened circumferential section is formed in the circumferential direction between two detent receptacles.

Alternatively or additionally, it may be provided that the locking receptacle is formed in the circumferential direction between two material-weakened peripheral portions.

It can thus be achieved that alternate material weakenings and locking receptacles on the closure cap in the circumferential direction. For example, it can be provided that two material-weakened circumferential sections are formed on diametrically opposite circumferential positions on the closure cap.

Overall, a rotationally symmetrical arrangement of latching receptacles and material weakenings on the closure cap or latching elements and support areas on the bottleneck is particularly favorable.

An embodiment of the invention can provide that the support area is designed as a survey. This can be achieved, for example, by forming the support region as material thickening, in particular relative to the regions adjacent in the circumferential direction. A material thickening represents a simple means of forming the support area required according to the invention.

Accordingly, the material-weakened peripheral portion may be formed by material withdrawal. This material withdrawal can preferably be formed on the inside of the closure cap facing the bottleneck. A material withdrawal provides the material weakening required according to the invention in a simple manner.

For a secure positioning of the closure cap on the bottle neck can be provided that the bottle neck has an outer surface and the closure cap has an inner surface, wherein the inner surface in the position of use rests flat on the outer surface. This flat contact can be carried out by direct contact or play. The formation of a game offers space for desired or even tolerable deformations of the closure cap due to aging processes.

The outer surface of the bottle neck and the inner surface of the closure cap may describe corresponding cylindrical shapes in which the radii are matched or identical. These cylinder shapes can be interrupted or broken through by latching receivers, latching elements, support areas or material-weakened peripheral sections or the like.

The outer surface of the bottle neck and the inner surface of the closure cap can also describe corresponding other symmetrical, in particular non-circular, shapes.

The outer surface may also be designed conical, wherein the cone tapers in the insertion direction such that a contact pressure between the closure cap and bottle neck is established during the insertion process. Alternatively or additionally, the inner surface of the closure cap can be made conical. In this case, the cone can widen in the insertion direction such that during the insertion process, a contact pressure between the cap and bottle neck is established.

Closure cap or bottleneck can deviate from this cone shape, for example, due to the latching receptacles and material-weakened circumferential sections or the latching elements and support region.

It can be provided, for example, that the cap rests directly on the bottleneck due to their dimensions in the region of the support areas, while in the region of the latching elements a clearance is formed between the closure cap and the bottle neck.

For easy production of the bottle body can be provided that the locking elements or the locking elements is designed as a survey (s) on the outer surface / are.

For easy production of the cap can be provided that the locking receptacle (s) is introduced as a recess (s) in the inner surface / are.

For a simple support of the closure cap in the material-weakened peripheral region, provision can be made for the support region (s) to be / is formed as a protrusion (s) on the outer surface. For easy accommodation of the support region, provision can be made for the material-weakened circumferential region (s) to be introduced into the inner surface as a recess (s).

In order to achieve as complete a support of the material weakening in the position of use, it can be provided that the material-weakened peripheral region is formed congruent to the corresponding support region.

For a secure hold of the closure cap, the locking element can be formed congruent to the corresponding locking receptacle. The advantage here is that the available for the locking or snap connection peripheral area can be used optimally.

In order to achieve a connection between the closure cap and the bottleneck with the least possible expenditure of force and the lowest possible material stress, provision can be made for the closure cap, at its open end in the direction of insertion, to have an expansion slope upstream of the catch receptacle. The advantage here is that the expansion bevel can be aligned so that it allows expansion of the closure cap for overcutting the locking element during the insertion process.

In addition thereto or alternatively, it can be provided that an expansion bevel is formed on the front end of the latching element in the insertion direction. These expansion slope can form a flank, which facilitate expansion of the cap during the insertion process.

For a secure hold of the cap on the bottle neck can be provided that at the rear end in the insertion direction of the locking element is formed a snap shoulder. The advantage here is that a snap connection is formed in a simple manner.

In order to facilitate plugging the closure cap in the correct orientation, it can be provided that the support region has at least one threading edge, which is aligned obliquely with respect to the plugging direction. Preferably, the support region has two converging threading edges, whereby an approximately correctly positioned cap is brought into the exact position during the insertion process.

As favorable materials for a long-term dimensional stability of the cap and the bottle body, for example, PET has been found. Accordingly, it can be provided that the closure cap and / or the bottle body is / are made of PET or other materials. It is also conceivable, two different materials such. B. soft on hard (LDPE or HDPE) use.

In order to achieve an exact positioning of the closure cap, in particular during the engagement of the locking receptacle, it can be provided that the support region has a slip-on guide. This slip-on guide is preferably aligned parallel to the insertion direction.

For a tight closure between the bottle body and the closure cap, a circumferential or sealing surface aligned radially or with respect to the closure cap can be formed on the neck of the bottle, which surface area rests on a corresponding sealing surface of the closure cap.

Alternatively or additionally, it may be provided that on the inside of the cap a circumferential sealing collar engaging in an opening of the bottle neck is formed with a peripheral sealing wall facing the bottle neck, wherein the sealing wall forms an encircling seal with an inner wall of the bottle neck. In combination of the sealing wall and the sealing surface, there is even a further increase in tightness. If the sealing wall is conical, wherein the cone tapers in the insertion direction such that a contact pressure between sealing collar and bottleneck is established during the insertion process, this results in a particularly long-term stable sealing.

It may be provided that the bottleneck and / or the closure cap is / are formed with a non-circular cross section, in particular with an oval or polygonal cross section. The cross section can be arranged transversely to the direction of insertion of the closure cap and the neck of the bottle. This is an advantage over the known screw caps, which necessarily have to have a round cross-section.

The invention will now be described in detail with reference to an embodiment, but is not limited to this embodiment. Further embodiments result by combining one or more features of Claims among each other and / or with one or more features of the embodiment.

It shows:.

1 an inventive dispenser bottle in an exploded view with the valve element removed and in overhead arrangement,

2 an axial section through the cap, the neck and the valve element of the dispenser bottle according to 1 .

3 another, opposite 2 offset by 90 ° axial section of the components according to 2 .

4 a section of the dispenser bottle according to 1 in oblique view,

5 an enlarged section 2 .

6 an enlarged section 3 .

7 an axial section through the cap according to 1 without bottleneck and valve element and

8th an axial view into the interior of the cap according to 7 ,

1 shows a whole with 1 designated dispenser bottle in three-dimensional exploded view.

The dispenser bottle 1 has a cap 2 and a bottle body 3 on. On the bottle body 3 is a bottleneck 4 formed, on which the cap 2 to close the opening 5 of the bottleneck 4 is plugged.

Before plugging into the opening 5 a in 2 and 3 apparent valve element 6 used.

The dispenser bottle 1 is shown in overhead position, which shows the position of use of the dispenser bottle 1 represents and in which the cap 2 below the bottle body 3 is arranged and positioned.

The cap 2 points in its lid surface 7 a downwardly directed outlet opening 8th for those in the dispenser bottle 1 contained liquid.

The outlet opening 8th will be with a in 2 and 3 visible valve tappet 9 of the valve element 6 closed to leakage of the liquid from the outlet opening 8th to prevent.

The valve lifter 9 is about elastic spring elements 10 on actuating wings 11 suspended.

The actuating wings 11 are over jetties 12 on a retaining ring 13 established.

At the radially inner ends of the webs 12 is a the valve lifter 9 circumferential guide ring 14 intended.

The retaining ring 13 is with the actuating wings 11 and the valve lifter 9 ahead in the opening 5 of the bottleneck 4 inserted and by support projections 15 held.

Spring-trained securing projections 20 on the actuating wings 11 prevent falling out of the valve element 6 out of the opening 5 ,

A positioning projection 16 at the bottleneck 4 and a corresponding positioning recess 17 ( 5 ) fix the valve element 6 in a position about the axis of the valve lifter 9 , in which position the actuating wings 11 the side walls 18 of the bottle body 3 touch from the inside. The bottle body 3 has for this purpose an elongated-oval base and two opposing side walls 18 on.

In this way, the outlet opening 8th be released by the outside on the side walls 18 is pressed, causing the actuating wings 11 be moved towards each other. This movement turns the valve lifter 9 from the outlet 8th pulled out. Once the pressurization of the sidewalls 18 stops, the valve tappet 9 by the spring action of the spring elements 10 returned to its closed position.

By the described constant pressure load of the side surfaces 18 for emptying the dispenser bottle 1 and the overhead assembly attaches to the seal between the closure cap 2 and the bottleneck 4 particularly high demands that must be met over a long period of time.

The pot-shaped or designed as any other symmetrical shape cap 2 this is on the bottleneck 4 in the direction of insertion 19 pressed, with the circumferential side wall 18 in the final position of the insertion with the bottleneck 4 form a tight conclusion.

To the cap 2 to hold in this end position, are on the bottle neck locking elements 21 formed, which in corresponding locking receptacles 22 engage and so slipping off the cap 2 prevent. As in 4 and 6 it can be seen, are the locking elements 21 as ring segments on diametrically overlying sides of the bottle neck 4 educated.

Each of the ring segments extends in the circumferential direction 23 of the bottleneck 4 over more than a quarter circle.

The rest shots 22 are in the cap 2 designed as Nutsegmente. Each of the snap shots 22 has the same length in the circumferential direction, as the corresponding locking element 21 so that every locking element 21 the associated locking receptacle 22 in the circumferential direction 23 over the full length fills.

Accordingly, on the cap 2 Nutsegmentförmige locking receptacles 22 formed on diametrically opposite sides, as in 8th and by comparing the 90 ° about the axis of the valve stem 9 rotated axial sections according to 5 and 6 is apparent.

In the circumferential direction 23 to the rest shots 22 offset and thus between two locking receptacles 22 is each in a peripheral section 24 a material weakening 25 educated. Thus, in each case between two locking receptacles 22 a peripheral portion 24 formed and the peripheral portions 24 and the detent receptacle 22 alternate in the circumferential direction 23 from.

At the circumferential position 26 which in use position to the material-weakened peripheral portion 24 corresponds, is in each case a support area 27 formed, on which the material-weakened peripheral portion 24 in the use position, ie with mounted cap 2 , rests on. It is thus at the bottleneck 4 a total of two support areas 27 on opposite sides of the bottle neck 4 educated.

As in 5 is shown, the material weakening 25 by a material withdrawal 28 opposite the material thickness in the area of the locking receptacles 22 reached. This will be a recess 36 formed, in which the respective support area 27 engages and which of these support area 27 at least in the radial direction and circumferential direction 23 fills.

This is the scope of support 27 as a survey of the outer surface 29 of the bottleneck 4 educated. The survey is formed by a material thickening.

The material withdrawal 28 is corresponding to the bottleneck 4 facing inside 30 the cap 2 brought in.

To achieve a tight conclusion, the outer surface 29 and the inside 30 Describe a cylindrical shape or any other symmetrical shape whose respective radii are coordinated so that there is an interference fit or a clearance fit.

It can also be provided that the outer surface 29 conically tapered towards the opening 9 is executed and that the inner surface 30 describes a corresponding cone, which is in the direction of insertion 19 opens.

How out 6 can be seen, can also between the outer surface 29 and the inside 30 at least in the cap edge 31 adjacent areas may be provided with a match with play, so that the inside 30 in this area flat, but with play, on the outer surface 29 rests.

The locking elements 21 are opposite the outer surface 29 also formed as surveys.

Accordingly, the Rastaufnahmen 22 as recesses in the inner surface 30 the cap 2 brought in.

In the direction of insertion the locking receptacles 22 is upstream of the by the cap edge 31 described open end one in 8th apparent strain angle 32 formed, which with a on in the direction of insertion 19 front end of the locking element 22 trained strain angle 33 cooperates such that the closure cap 22 is widened in its scope when plugging, until the locking element 22 engages or snaps into the associated locking receptacle. Here is the plug-in direction 19 so defined that in plug-in direction 19 upstream elements with the bottleneck 4 first come into contact with the insertion process. The same applies to the plug-in direction 19 the cap 2 ,

At the back and in the plug-in direction 19 rear end of the locking element 21 is one to the direction of insertion 19 essentially perpendicular snap shoulder 34 formed, which prevents snapping back and release the snap connection. Because the support areas 27 and the associated material-weakened peripheral sections 24 when mating must be brought into cover - and also the locking elements 21 and the associated snap-in receptacles 22 - are at the support areas 27 two threading edges each 35 formed by chamfers. The through the material weakenings 25 formed recesses 36 have corresponding bevels 37 on.

As by comparing the 5 and 6 , which each show 90 ° rotated axial sections, can be seen, the side wall 18 the cap 2 through the material withdrawal 28 in the peripheral portion 24 a lower material thickness than in the peripheral portion 38 which is the detent 22 contains.

The desired elasticity when mating the snap connection on the one hand and the desired dimensional stability during use of the dispenser bottle on the other hand are best achieved by the geometry described when the cap 2 and the bottle body 3 made of PET or another material.

To manage the support area 27 into the recess 36 and according to the locking elements 21 in the associated locking receptacles 22 are at the support area 27 - and at the identical support area 27 on the opposite side of the bottle neck 4 - Two each parallel to the direction of insertion 19 aligned slip-on guides 39 formed, which with appropriate slip-on guides 40 on the cap 2 cooperate and a precise axial guidance, in particular in the portion of the plug-in operation, in which the locking elements 21 in the snap-in receptacle 22 be pressed.

At the bottleneck 4 is an annular peripheral sealing surface 41 formed, which radially and thus to the cap 2 is aligned.

At the cap 2 is an annular peripheral sealing surface 42 formed, which radially and thus in the use position the bottleneck 4 oriented facing. In latched position of the cap 2 on the bottleneck 4 lies the sealing surface 42 flat and annular circumferential and thus close to the sealing surface 41 on. Thus, the dispenser bottle 1 at the connection between cap 2 and bottle body 3 tightly closed.

The cap 2 also has on the inside a sealing collar 43 on, which in the circumferential direction 23 also rotates and which in use position in the opening 5 intervenes.

Radially on the outside of the sealing collar 43 is a cylindrical or plug-in direction 19 tapered conical sealing wall 44 intended. This sealing wall 44 lies with attached cap 2 on an inner wall 45 in the circumferential direction 23 circumferential and flat, so one in the circumferential direction 23 circumferential seal is formed.

Thus, along the creepage distance from the inside of the dispenser bottle 1 outwards, which between bottleneck 4 and cap 2 runs, successively formed two annular seals.

At the dispenser bottle 1 is provided on a bottleneck 4 in the circumferential direction 23 alternately locking elements 21 and support areas 27 provided and on a cap 2 the locking elements 21 corresponding locking recordings 22 for producing a snap connection between the closure cap 2 and bottleneck 4 and the support areas 27 corresponding material-weakened peripheral sections 24 form, wherein in the mounted position, the material-weakened peripheral portions 24 flat on the respective support areas 27 rest.

Claims (13)

Dispenser bottle ( 1 ), in particular in overhead construction, with one on a bottleneck ( 4 ) of a bottle body ( 3 ) sealingly arranged closure cap ( 2 ), characterized in that at the bottleneck ( 4 ) at least one latching element ( 21 ), which in the position of use in a corresponding locking receptacle ( 22 ) on the cap ( 2 ) engages and a tight fit of the cap ( 2 ) at the bottleneck ( 4 ) causes on the cap ( 2 ) in the circumferential direction ( 23 ) offset to the latching receptacle ( 22 ) in a peripheral section ( 24 ) a material weakening ( 25 ) and that at the position of use in the material weakening ( 25 ) corresponding circumferential position ( 26 ) at the bottleneck ( 4 ) a support area ( 27 ) is formed such that the material-weakened peripheral portion ( 24 ) of the cap ( 2 ) in the position of use on the support area ( 27 ) rests. Dispenser bottle ( 1 ) according to claim 1, characterized in that the latching element ( 21 ) and the corresponding snap-in receptacle ( 22 ) form a snap connection and / or that the closure cap ( 2 ) in the mounted position insoluble with the bottle body ( 3 ) connected is. Dispenser bottle ( 1 ) according to claim 1 or 2, characterized in that the latching element ( 21 ) is formed as a preferably axially aligned ring segment and / or that the locking receptacle ( 22 ) is designed as a preferably axially aligned groove segment. Dispenser bottle ( 1 ) according to one of claims 1 to 3, characterized in that at least two in the circumferential direction ( 23 ) spaced locking elements ( 21 ) at the bottleneck ( 4 ) and at least two corresponding latching receptacles ( 22 ) on the cap ( 2 ) are formed. Dispenser bottle ( 1 ) according to one of claims 1 to 4, characterized in that the material-weakened peripheral portion ( 24 ) in the circumferential direction ( 23 ) between two locking receptacles ( 22 ) is formed and / or that the locking receptacle ( 22 ) in the circumferential direction ( 23 ) between two material-weakened peripheral sections ( 24 ) is formed and / or that two material-weakened peripheral sections ( 24 ) at diametrically opposite circumferential positions on the closure cap ( 2 ) are formed. Dispenser bottle ( 1 ) according to one of claims 1 to 5, characterized in that the support area ( 27 ) is formed as a survey, in particular material thickening, and / or that the material-weakened peripheral portion ( 24 ) by material withdrawal ( 28 ), preferably on the bottleneck ( 4 ) facing inner surface ( 30 ) of the cap ( 2 ) is formed. Dispenser bottle ( 1 ) according to one of claims 1 to 6, characterized in that the bottleneck ( 4 ) a preferably a cylindrical shape or another symmetrical shape descriptive or conical outer surface ( 29 ) and the closure cap has a preferably cylindrical shape or another symmetrical shape descriptive or conical inner surface ( 30 ) and / or that the inner surface ( 30 ) in the position of use flat, in particular directly or with play, on the outer surface ( 29 ) rests. Dispenser bottle ( 1 ) according to one of claims 1 to 7, characterized in that the latching element ( 21 ) or the locking elements ( 21 ) as a survey (s) on the outer surface ( 29 ) is / are formed and / or that the latching receptacle (s) ( 22 ) as a recess (s) in the inner surface ( 30 ) and / or that the support area (s) (s) 27 ) as a survey (s) on the outer surface ( 29 ) is / are formed and / or that the (the) material-weakened) peripheral region (s) ( 24 ) as a recess (s) ( 36 ) in the inner surface ( 30 ) is / are introduced. Dispenser bottle ( 1 ) according to one of claims 1 to 8, characterized in that the material-weakened peripheral region ( 24 ) at least in the circumferential direction ( 23 ) coincide with the corresponding area of support ( 27 ) is formed and / or that the locking element ( 21 ) congruent to the corresponding locking receptacle ( 22 ) is trained. Dispenser bottle ( 1 ) according to one of claims 1 to 9, characterized in that the closure cap ( 2 ) at its open end ( 31 ) in the plugging direction ( 19 ) in front of the locking receptacle ( 22 ) an expansion slope ( 32 ) and / or that at the plug-in direction ( 19 ) front end of the locking element ( 21 ) an expansion slope ( 33 ) is formed and / or that in the direction of insertion ( 19 ) rear end of the locking element ( 21 ) a snap shoulder ( 34 ) and / or that the support area ( 27 ) at least one threading edge ( 35 ), which opposite the plug-in direction ( 19 ) is oriented obliquely. Dispenser bottle ( 1 ) according to one of claims 1 to 10, characterized in that the closure cap ( 2 ) and / or the bottle body ( 3 ) is made of PET / are. Dispenser bottle ( 1 ) according to one of claims 1 to 11, characterized in that the support area ( 27 ) one preferably parallel to the plug-in direction ( 19 ) aligned slip-on guide ( 39 ) and / or that at the bottleneck ( 4 ) a radial or to the cap ( 2 ) aligned, circumferential sealing surface ( 41 ) is formed which flat on a corresponding sealing surface ( 42 ) of the cap ( 2 ) rests, and / or that on the cap ( 2 ) inside into an opening ( 5 ) of the bottle neck ( 4 ) engaging circumferential sealing collar ( 43 ) with a bottleneck ( 4 ) facing circumferential sealing wall ( 44 ), wherein the sealing wall ( 44 ) with an inner wall ( 45 ) of the bottle neck ( 4 ) forms a circumferential seal, and / or that the sealing wall ( 44 ) is conical. Dispenser bottle ( 1 ) according to one of claims 1 to 12, characterized in that the bottleneck ( 4 ) and / or the cap ( 2 ) is formed with a non-circular cross-section, in particular with an oval or polygonal cross-section, is / are.

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