DE102010018889A1 - Container for use as hand-portable fire extinguisher for storing e.g. pasty substance, has connecting ring with radial inner and outer circumference surfaces, where predominant part of material-fitting connection to inner surface is made - Google Patents

Abstract

The container (10) has a resilient tensile filling material receiving body (28) with an opening neck (40) defining a charging hole for a filling material. An annular connecting ring (42) is connected with the neck in a material-fitting manner, and made of rigid material when compared with the body. The ring comprises ring axles, a radial inner circumference surface and a radial outer circumference surface, where a predominant part of the material-fitting connection to the inner surface is made. The ring is made of polybutylene terephthalate, polyethylene terephthalate or polyamide.

Description

The invention relates to a container for a filling material, comprising an elastically stretchable Füllgutaufnahmekörper with a filling opening for the filling opening neck limiting and connected to the opening neck of the Füllgutaufnahmekörpers with this by material connection, in particular annular connecting ring of a stiffer compared to the Füllgutaufnahmekörper material, wherein the Connecting ring has a ring axis, a radially inner side located inner peripheral surface and a radially outer side located outer peripheral surface.

When filling the Füllgutaufnahmekörpers this expands. The resulting in the Füllgutaufnahmekörper strain is usable to produce a force acting on the filling application force. In a preferred embodiment, the total application force acting on the filling material alone results from the expansion stress of the filling material receiving body, d. H. The container comes without additional force generating means in the form of a propellant gas or separate spring elements. Of course, it goes without saying that part of the total application force acting on the filling material can possibly be generated by a propellant gas or an additional spring element, although at least the predominant part of the total application force results from the expansion stress of the product receiving body.

Exemplary containers with an elastically stretchable filling material receiving body for receiving a metered fillable material are in WO 2007/009651 A2 . DE 103 10 079 A1 . US 3,672,543 . DE 43 33 627 C2 . DE 201 20 143 U1 . DE 201 20 142 U1 . DE 10 2004 005 881 A1 . EP 0 361 091 A1 . CH 591 901 A5 and EP 0 276 097 A2 shown.

In the mentioned WO 2007/009651 A2 a spray can is presented with a product made of silicone rubber Füllgutaufnahmekörper presented, which is molded onto the outside of a tubular housing connected to a valve adapter.

In contrast, it is provided according to the invention in a container of the type described above, that at least a predominant part of the material connection is made on the inner peripheral surface of the connecting ring. Such a configuration is favorable in view of the voltages arising at the connection point between connecting ring and Füllgutaufnahmekörper upon expansion of the latter. On the inner circumference, comparatively lower tensile stresses are to be feared in the connection region, which may adversely affect the fatigue strength of the connection.

Preferably, the material connection is made substantially completely on the inner peripheral surface of the connecting ring. It also advantageously extends over at least a predominant part of the axial length of the inner circumferential surface, in particular substantially over the entire axial length. The outer peripheral surface of the connecting ring may be substantially completely free of the material of the product receiving body, d. H. the material connection can be made substantially exclusively on the inner peripheral surface of the connecting ring. A one-sided realization of the material connection, d. H. only on the inner peripheral surface of the connecting ring, is advantageous in that in the connecting region, the material of the Füllgutaufnahmekörpers is then only on one radial side of the connecting ring. It has been found that an important factor for the strength of the connection is the material thickness of the product receiving body in the connection region. By concentrating the material of the product receiving body on a radial side of the connecting ring, a particularly high strength of the connection can be achieved for a given wall thickness.

The filling material may be, for example, a liquid, pasty or gelatinous substance, which is to be dispensed in a metered manner by means of the container. For dosing the dispensed amount, the container may be provided with valve means having a suitable actuator for operation by a user.

The Füllgutaufnahmekörper is preferably produced in an injection molding process. To realize the material connection, the Füllgutaufnahmekörper may be molded onto the connecting ring, wherein the connecting ring may be a prefabricated, einzulülendes in the mold component. Alternatively, it is conceivable to realize the fabric bond as an adhesive bond.

The Füllgutaufnahmekörper may have an elongated shape with a filling opening at one longitudinal end and a closed, rounded other longitudinal end in the unfilled state, its closed longitudinal end is advantageously determined by the injection mold and it is thus formed in the course of injection molding.

The connecting ring can be made of a plastic material, with polybutylene terephthalate (PBT), polyethylene terephthalate (PET) and polyamides (PA) being preferred because of their good adhesion to silicone rubber, in particular liquid silicone rubber. This material choice for the Connecting ring is also considered independent of the localization of the Anspritzbereiche the Füllgutaufnahmekörpers on the connecting ring as independently protectable. It goes without saying, however, that other plastic materials are by no means excluded. It is also conceivable to use a metal material or a ceramic material for the production of the connecting ring.

By contrast, the product receptacle body is preferably made of an addition-crosslinking silicone rubber, in particular a liquid silicone rubber. Again, of course, other rubber-elastic materials are conceivable, such as a polyurethane-based plastic.

In a preferred embodiment, the connecting ring has connection formations for the separate connection of the connecting ring with two different components of the container which are separate from the filling goods receiving body. At least one of the two components can be a housing component of the container, and it is even conceivable that both components are each formed by a housing component of the container.

As far as one of the components is formed by a housing base body of the container, a preferred embodiment provides that the connecting ring is inserted into a housing opening of the housing base body and is connected to a first connection formation with the housing base body. The other component may be in this embodiment, serving as a carrier of a valve assembly cover part, with which the connecting ring is connected to a second connection formation. Because of the possibility to dispense with a propellant gas, it is not necessary to design the housing body pressure-resistant. A production of the housing base of a plastic material is therefore readily possible, and depending on the application, other materials are conceivable, in particular a production of a sufficiently strong paper or cardboard material. By contrast, the cover part can be made, for example, from a metal material, such as aluminum or tinplate.

For the connection of the connecting ring with the housing base, a bond is conceivable, although other forms of connection are readily possible, such as a snap connection or a clamp connection. By contrast, the connecting ring can be connected to the cover part, for example by crimping.

In one embodiment, the container has a housing with a housing interior, wherein the Füllgutaufnahmekörper protrudes into the housing interior and expands when filled in the housing interior. The connecting ring can form part of the (visible) outer surface of the container. In order to allow for filling of the product container, an outflow of air from a limited space between the housing and the Füllgutaufnahmekörper (and to allow corresponding upon emptying of the Füllgutaufnahmekörpers a backflow of air), the container may comprise at least one ventilation duct, which in a space between the Housing and the Füllgutaufnahmekörper opens and is connected to the container exterior, wherein the ventilation duct is at least partially bounded by the connecting ring. The ventilation duct may be delimited at least over part of its length between the connecting ring and an adjacent housing component of the housing. Alternatively or additionally, it may be bounded on at least part of its length all around by the connecting ring.

In a preferred embodiment, the ventilation duct opens in a direction away from the Füllgutaufnahmekörper in the space between the housing and the Füllgutaufnahmekörper. This makes it difficult to damage the product receiving body by an elongate, pointed object (eg a needle) introduced from outside through the ventilation duct.

According to a further development, the connecting ring has an approximately T-shaped cross-section annular main section with an axially extending main leg and a radially extending transverse limb, wherein the material connection substantially over the entire axial length of the main leg and substantially the entire radial length of that part of the Querschenkels is made to this projecting radially on the inside over the main leg. The wall thickness of the Füllgutaufnahmekörpers can correspond in the axial region of the main leg at least the inside radial projection of the transverse leg over the main leg.

The invention will be further explained with reference to the accompanying drawings. They show:

1 a Axiallängsschnitt through a designed as a fire extinguisher container according to an embodiment,

2 a spray head of the container 1 in an enlarged view,

3a to 3e Axial longitudinal sections of the container 1 (omitting a valve assembly) at various stages of filling an elastically stretchable Füllgutaufnahmekörpers the container.

It will be initially on the 1 and 2 directed. The one shown there, generally with 10 designated container is exemplified as hand-portable fire extinguisher and has a bottle-like ausgestaltetes, approximately cylindrical housing 12 with a housing axis 14 , The housing is formed by a housing base body 16 and a lid part 18 , The housing body 16 For example, is made of a plastic material and forms the axis 14 enclosing housing jacket 20 and a housing bottom axially closing the housing bottom 22 , In the region of its axially upper end of the housing body runs 16 radially inwardly and forms a housing opening 24 enclosing bottleneck 26 ,

In the area of the bottleneck 26 is a rubber-elastic, in an injection molding preferably made of a liquid silicone rubber Füllgutaufnahmekörper 28 hung, which in the with 30 designated interior of the housing 12 protrudes. The Füllgutaufnahmekörper 28 forms a filling space with its hollow interior 32 for receiving one in the container 10 to be stored, dosed auszubringenden contents. The filling material may be a liquid, pasty or gelatinous filling material and is in the case of using the container 10 As a fire extinguisher a suitable sprayable extinguishing agent. The Füllgutaufnahmekörper 28 is preferably produced in one layer, but may be provided on the inside and / or outside with a suitable coating, for example, to make him resistant to aggressive substances in the medium or to ensure in the case of a filled food a required neutrality to the food.

In the unfilled state is the Füllgutaufnahmekörper 28 elongated in the manner of a condom and has a longitudinal axis 34 , He is with the housing axis 14 parallel, in particular equiaxed longitudinal axis 34 in the case 12 suspended. He has a closed axially lower end 36 on. In the region of its axially upper end it has a filling opening 38 through an opening neck 40 is enclosed.

The Füllgutaufnahmekörper 28 is in the area of his opening neck 40 to a made of plastic, preferably made of PBT, PET or polyamide, annular connecting ring 42 molded, which has a cross-sectionally approximately T-shaped main ring section 44 with a substantially axially extending main leg 46 and a substantially radially extending transverse leg 48 having. With his T-main thigh 46 is the connecting ring 42 in the bottleneck 26 of the housing 12 used, to the extent that he with the radially outer part of his transverse leg 48 axially on the bottleneck 26 seated. In the example shown, the transverse leg protrudes 48 radially outward over the bottleneck 26 out and surrounds this radially with a projecting axially down the first extension 50 ,

In the region of its radially inner end closes on the transverse leg 58 of the main ring section 44 a second extension extending axially upward 52 on, with which the housing cover 18 connected by crimping. To seal the junction is between the second extension 52 and the housing cover 18 in the example case in cross section approximated sickle-shaped sealing ring 54 inserted. The housing cover 18 consists of a plastically deformable, but as inelastic material, preferably tinplate or aluminum.

The housing cover 18 carries a general with 56 designated valve assembly, which has a central opening of the housing cover 18 (unspecified in the drawings) interspersed and with the housing cover 18 for example, jammed, glued or otherwise attached thereto. Part of the valve assembly 56 is an actuator head to be depressed by the user in the axial direction 58 , which is also an exit channel 60 forms for the extinguishing agent to be sprayed. Depending on the configuration, in particular viscosity of the extinguishing agent, the geometry of the outlet channel 60 be different.

By injecting the Füllgutaufnahmekörpers 28 to the relatively stiffer connecting ring 42 there is a cohesive connection between these two components. It can be seen that the Füllgutaufnahmekörper 28 only radially on the inside to the connecting ring 42 is injected, ie only on the inner peripheral surface. On the radially outer side, ie on the outer peripheral surface, of the connecting ring 42 There is no material of the Füllgutaufnahmekörpers 28 , In the concrete example, the Anspritzbereich extends substantially over the entire axial length of the connecting ring 42 , ie from the axially lower end of the main leg 46 over the underside of the radially inner part of the transverse leg 48 to substantially the upper end of the second extension 52 , It can be seen that the wall thickness of the Füllgutaufnahmekörpers 28 in the area of the main thigh 46 continuous at least as large as the measure to that of the transverse leg 48 radially inward over the main leg 46 survives. In other words, the entire area is below the radially inner part of the transverse leg 48 up to the axially lower end of the main leg 46 with material of the product receiving body 28 filled.

At the bottleneck 26 can the connecting ring 42 be attached for example by an adhesive bond. Other connection methods are of course not excluded, such as a snap connection, a clamp connection or a connection by means of thread or bayonet lock.

It will now be added to the 3a to 3e directed. 3a shows the unfilled state of the Füllgutaufnahmekörpers 28 , It can be seen that the Füllgutaufnahmekörper 28 axial distance from the housing bottom 22 has. He also has axially below the main leg 46 of the connecting ring 42 around radial distance from the housing shell 20 ,

When the product receiving body 28 with extinguishing agent (or in general: contents) is filled, it expands. The 3b . 3c . 3d and 3e , show expansion states of the product receiving body 28 at different degrees of filling up to a maximum filling ( 3e ). This until the final filling state according to 3e to be filled volume will usually be greater than one for the container 10 specified nominal filling volume. The nominal filling volume (nominal filling quantity) can be, for example, outside the housing 12 printed or otherwise legibly attached. It primarily represents information directed to the buyer or user. The initial volume of air in the still empty filling space 32 (Dead volume of the Füllgutaufnahmekörpers 28 ) as well as any losses due to a restoring capacity of the stretched product receiving body which diminishes over time 28 or / and by diffusion-related fading liquid components of the filled product through the wall of the Füllgutaufnahmekörpers 28 may make it necessary to fill more than the specified nominal filling volume in order to ultimately be able to deliver an amount which corresponds to the nominal filling volume, possibly reduced by a predetermined permissible deduction. The dead volume of the Füllgutaufnahmekörpers 28 can be kept small by providence of a volume displacer (not shown in detail).

The extension of the filling material receiving body 28 takes place both in the radial direction and in the axial direction, and to the greatest extent simultaneously. It can be seen that the radial extent approximately in an axial central region of the product receiving body 28 (centered on its respective axial length) is greatest. At sufficient filling level, but definitely before reaching the nominal filling volume, z. B. at a filling level of at most 50% or even only at most 40%, for example, only at most 35% of the nominal filling volume, sets the Füllgutaufnahmekörper 28 finally to the housing shell 16 all around ( 3c ). As a result, axially above and below the contact area, in which the Füllgutaufnahmekörper 28 on the housing shell 20 is present, two subspaces 62 . 64 between the case 12 and the product receiving body 28 separated. The contact area of the product receiving body 28 on the housing shell 20 is with 66 designated. It can be seen that the axial length of this contact area 66 upon further filling of the product receiving body 28 increases, in both axial directions, ie axially downwards and axially above. This means that the volumes of both subspaces 62 . 64 with continued filling of the product receiving body 28 become smaller, in the example shown, both the absolute volume change and the rate of change of the lower subspace 64 are larger than those of the upper subspace 62 ,

In the final filling state, the Füllgutaufnahmekörper 28 axially to at least close to the ground 22 of the housing 12 extended and lies there preferably in an approximately spherical soil trough 68 (named only in 3d ) flat on. In this state, the investment area extends 66 over a predominant part, in particular a majority of the axial length of the - stretched Füllgutaufnahmekörpers 28 , The abutment of the Füllgutaufnahmekörpers 28 at the bottom of the case 22 preferably only shortly before reaching the final filling state, for example after filling of at least 85%, better at least 90% and even better at least 95% depending on the nominal filling quantity of the container 10 specified total filling quantity. An invagination of the Füllgutaufnahmekörpers 28 in the area of the housing bottom 22 can with such expansion behavior of the Füllgutaufnahmekörpers 28 be avoided, at least as long as the filled extinguishing agent does not freeze, thereby increasing its volume.

The in the Füllgutaufnahmekörper 28 Stored tension causes a force acting on the filled product force, by which upon actuation of the valve assembly 56 the contents of the container 10 is driven out. Other force generating means are in the container shown 10 unavailable. The application force is completely absorbed by the force-generating body 28 applied.

So when filling the Füllgutaufnahmekörpers 28 Air from the decreasing subspaces 62 . 64 can escape and equally when emptying the Füllgutaufnahmekörpers 28 Air in the two subspaces 62 . 64 flow back can, are at the container 10 several ventilation points provided for the inflow and outflow of air. The ventilation of the axially lower subspace 64 takes place via one or more near the ground of the housing shell 20 and / or in the case back 22 provided ventilation holes (not shown). For ventilation of the axial upper compartment 62 is on the connecting ring 42 at least one ventilation duct 70 provided, which in the example shown, on a part of its length between the connecting ring 42 and the bottleneck 26 runs and axially below the neck of the bottle in the subspace 62 opens. The ventilation duct 70 is of an axially extending groove-like depression 72 in the outer peripheral surface of the main portion 46 formed, with this groove-like depression 72 in the transverse leg 48 extends into it and passes through it in the manner of a hole. The mouth of the ventilation duct 70 outward lies at a point of the transverse leg 48 , which is freely accessible from the outside. To any damage to the Füllgutaufnahmekörpers 28 through one in the ventilation duct 70 From the outside introduced to avoid sharp object, the ventilation duct opens 70 inside with a radially outward direction of the mouth in the subspace 62 one. A through the ventilation duct 70 inserted sharpener object can thus not on the Füllgutaufnahmekörper 28 bump. In the example shown, this is realized by the groove-like depression 72 not to the axially lower end of the main leg 46 goes through, but in front of the axially lower end of the main leg 46 ends.

For even ventilation of the ring-like subspace 62 can be distributed in the circumferential direction several (at least two) ventilation ducts 70 be provided.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2007/009651 A2 [0003, 0004]
• DE 10310079 A1 [0003]
• US 3672543 [0003]
• DE 4333627 C2 [0003]
• DE 20120143 U1 [0003]
• DE 20120142 U1 [0003]
• DE 102004005881 A1 [0003]
• EP 0361091 A1 [0003]
• CH 591901 A5 [0003]
• EP 0276097 A2 [0003]

Claims (21)

Container for a filling material, comprising - an elastically stretchable product receiving body ( 28 ) with a filling opening ( 38 ) for the product opening limiting neck ( 40 ), - a at the opening neck of the Füllgutaufnahmekörpers with this connected by material connection, in particular annular connecting ring ( 42 ) made of a material which is stiffer in comparison to the product receptacle body, wherein the connecting ring has a ring axis, an inner peripheral surface located radially inside and an outer peripheral surface located radially outside, characterized in that at least a predominant part of the material connection on the inner peripheral surface of the connecting ring ( 42 ) is made. Container according to claim 1, characterized in that the adhesive connection substantially completely on the inner peripheral surface of the connecting ring ( 42 ) is made. Container according to claim 1 or 2, characterized in that the material connection connection extends over at least a major part of the axial length of the inner peripheral surface, in particular substantially over the entire axial length. Container according to one of the preceding claims, characterized in that the outer peripheral surface of the connecting ring ( 42 ) substantially completely free of the material of the product receiving body ( 28 ). Container according to one of the preceding claims, characterized in that the filling material receiving body ( 28 ) is produced by injection molding and molded onto the connecting ring. Container according to one of the preceding claims, characterized in that the connecting ring ( 42 ) is made of polybutylene terephthalate, polyethylene terephthalate or a polyamide. Container according to one of the preceding claims, characterized in that the filling material receiving body ( 28 ) is made of an addition-crosslinking silicone rubber, in particular a liquid silicone rubber. Container according to one of the preceding claims, characterized in that the connecting ring ( 42 ) Connection formations ( 46 . 50 . 52 ) for the separate connection of the connecting ring with two different, from the Füllgutaufnahmekörper ( 28 ) separate components ( 16 . 18 ) of the container. Container according to claim 8, characterized in that at least one of the two components ( 16 . 18 ) is a housing component of the container. Container according to claim 9, characterized in that both components ( 16 . 18 ) are each formed by a housing component of the container. Container according to one of claims 8 to 10, characterized in that one of the components of a housing base body ( 16 ) of the container is formed, that the connecting ring ( 42 ) in a housing opening ( 24 ) of the housing base body is inserted and at a first connection formation ( 46 . 50 ) is connected to the Gehäusegrundkorper and that the other component as a support of a valve assembly ( 56 ) serving lid part ( 18 ), with which the connecting ring at a second connection formation ( 52 ) connected is. Container according to claim 11, characterized in that the housing base body ( 16 ) made of a plastic material and the cover part ( 18 ) are made of a metal material. Container according to claim 11 or 12, characterized in that the connecting ring ( 42 ) with the housing base body ( 16 ) is glued and with the cover part ( 18 ) is connected by a crimp connection. Container according to one of the preceding claims, characterized by a housing ( 12 ) with a housing interior ( 30 ) wherein the product receiving body ( 28 ) protrudes into the housing interior and expands when filled in the housing interior, wherein the connecting ring ( 42 ) forms part of the outer surface of the container. Container according to claim 14, characterized by at least one in a space between the housing ( 12 ) and the product receiving body ( 28 ) opening, with the outside of the container connected ventilation duct ( 70 ) which is at least partially separated from the connecting ring ( 42 ) is limited. Container according to claim 15, characterized in that the ventilation duct ( 70 ) at least over part of its length between the connecting ring ( 42 ) and an adjacent housing component ( 16 ) of the housing ( 12 ) is limited. Container according to claim 15 or 16, characterized in that the ventilation channel ( 70 ) in a direction radially away from the product receiving body ( 28 ) in the room ( 62 ) between the housing ( 12 ) and the Füllgutaufnahmekörper opens. Container according to one of claims 15 to 17, characterized in that the ventilation duct ( 70 ) at least over part of its length all around the connecting ring ( 42 ) is limited. Container according to one of the preceding claims, characterized in that the connecting ring ( 42 ) has a cross-sectionally approximately T-shaped annular main portion ( 44 ) with an axially extending main leg ( 46 ) and a radially extending transverse leg ( 48 ) and that the material connection is made substantially on the entire axial length of the main leg and substantially the entire radial length of that part of the transverse leg, by which it projects radially inwardly beyond the main leg. Container according to claim 19, characterized in that the wall thickness of the product receiving body ( 28 ) in the axial region of the main leg ( 46 ) at least the inside radial projection of the transverse leg ( 48 ) over the main leg. Container for a filling material, in particular according to one of the preceding claims, comprising - an elastically stretchable, filling material receiving body produced by injection molding ( 28 ) with a filling opening ( 38 ) for the product opening limiting neck ( 40 ), - in the region of the opening neck of the Füllgutaufnahmekörpers with this connected by injection molding, in particular annular connecting ring ( 42 ) made of a material which is stiffer compared to the product receiving body, characterized in that the connecting ring ( 42 ) is made of polybutylene terephthalate, polyethylene terephthalate or a polyamide.

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