WO1994027882A1

WO1994027882A1 - Self-sealing closure

Info

Publication number: WO1994027882A1
Application number: PCT/EP1993/001342
Authority: WO
Inventors: Fritz Meckenstock
Original assignee: Frimec Fritz Meckenstock Gmbh & Co.
Priority date: 1992-04-29
Filing date: 1993-05-28
Publication date: 1994-12-08
Also published as: DE4214153A1

Abstract

The invention concerns a self-sealing closure (1), in particular a closure for a container or tube (12), preferably for a paste or liquid preparation. The closure (1) has a lid (5) with an outlet (5'), the closure also having an obturator (4), located inside the closure, which seals the outlet (5') from the inside. In the event of an increase in pressure in the closure (1), the obturator (4) liberates the closure aperture (6), making use of the elasticity inherent in the closure (1). The invention proposes that the lid (5) is joined to an elastic panel located opposite it and which preferably forms the floor (14) of a hollow chamber (17), so that the lid (5), making use of the elasticity of the closure wall, can flex relative to the obturator (4) to liberate the closure aperture (6).

Description

00001 self-closing closure

00002

00003 The invention relates to a self-closing lock

00004 closure for a container or a tube, in particular

00005 for pasty or fluid masses, with a closure

00006 ke, which has an outlet opening, and one in the

00007 closure arranged locking pin which

00008 closing opening from the inside, due to

00009 a pressure increase in the closure of the locking pin

00010 releases the shutter opening, using one

00011 the elasticity inherent in the closure. 00012

Such a closure is for example from the

00014 DE-PS 25 15 095 known. In the known closure

The graduated closure cover of the

00016 Take off the locking pin to release the locking opening.

00017 ben. However, this result appears due

00018 whose conical outer area

00019 ches the blanket doubtful. At least appears

00020 a dead center effect possible, which is an elastic

00021 Retraction of the cover after removal of the over-

00022 pressure does not appear possible. 00023

00024 Furthermore, DE-OS 30 38 917 describes a self-closing

Known closure, in which the closure pin

00026 fen is resiliently connected to the closure wall. The

00027 resilient connection is through a membrane-like wall

00028 realized in the overpressure in the closure

Dodges while driving the locking pin. The sales

00030 end plug releases the outlet opening. 00031

A comparable embodiment is also from EP-Bl

00033 0 282 791 known. Here the tubular hollow design is

00034 dete locking pin telescopically in one of the

00035 cover blanket protruding down piece added.

REPLACEMENT LEAF Based on a prior art according to DE-OS 30

00037 38 917, the invention provides a self-closing

00038 closure available, with reliable function

00039 is simple. 00040

The closure of the invention has above all one

00042 closure wall, which preferably forms a bottom of a 00043 closure chamber, which faces the closure ceiling.

00044 is arranged lying. One regarding a mass print

00045 kes (hydraulically) effective inner surface of the elastic 00046 closure wall is smaller than

00047 an effective inner surface of the blanket. The Ver-

00048 closing blanket is connected to the closing wall in such a way that the closing blanket using the elastic

00050 did the sealing wall relatively with an increase in pressure

00051 to the locking pin to release the locking opening

00052 is resilient. It is preferred here that the

00053 end cover is essentially rigid. Also

It is preferred that the locking pin - at least in

00055 essential - is stationary. An elastic

00056 see movability of the closure wall is preferred

00057 from a corresponding design of the closure wall

Won 00058. This closure wall is in thickness for this

00059 in particular reduced compared to the blanket.

00060 This makes it possible, for example, the closure cover

00061 and the closure wall or the closure base

00062 the same material, such as polypropylene. at

00063 formation of a lock chamber is the lock bottom

00064 preferably penetrated by the locking pin. in this connection

00065 the locking pin can be hollow and also

00066 the only flow connection in the lock chamber

Represent 00067. The closure bottom is preferably essentially

00068 Chen formed flat. The bottom can

00069 but also funnel-shaped to the outlet opening

00070 designed to be opening,

REPLACEMENT LEAF 00071 In detail, the closure base is still

00072 designed like a pot. The top cover can be used as the 00073 bottom of an oppositely arranged pot-like cover

Be formed 00074 final element. Here is the top

00075 pot-like closure elements containing the cover blanket

00076 ment connected to the lower, the bottom of the closure

00077 forming closure element. In the upper, pot-like closure element containing the closure blanket

00079 the outlet opening is formed approximately in the middle,

00080 the lower pot-like closure element centrally the

00081 surrounds the locking pin, be it at a distance or immediately

00082 bar applied. The blanket and bottom

00083 can thus be two substantially parallel spaced

00084 form wall elements, which are separated by a cylindrical

00085 ment are connected. Regarding the locking pin can

00086 the closure bottom in more detail on his

00087 total length spaced from the locking pin

00088 fen. However, it is preferred that the closure bottom of

00089 one on the locking pin in its foot area

00090 wall is designed starting. In the area of

00091 locking pin foot the locking base goes into an

00092 essential or compared to the closure bottom

00093 rigid closure plate, which in a further design

00094 tion, for example, forms a threaded connector for

00095 screw connection with a bottle neck or the like

00096 chen. It is also preferred that the plug,

00097 in particular if the closure bottom in the area of

00098 locking pin foot in plant or directly one-piece

Is formed with the locking pin, via a

00100 part of its length is tubular, for

00101 line from ground to the lock chamber. Further recommended

00102 it is also the case that a side wall of the pot

00103 upper closure element as a the closure bottom

00104 outer covering wall is formed.

00105 Since such a self-closing closure on the

REPLACEMENT LEAF 00106 internal pressure in the closure chamber or the container

00107 generally speaking, it may be advisable to

00108 re for a transport and storage period, one

00109 locking device to be provided. This is in particular

00110 provided that the cover blanket by a locking

00111 tion is fixable. This lock must be opposite

00112 a fixed part. For example

00113 this can be part of the container. It is preferred

00114 that the closure cover on the closure itself

00115 is fixed. For this it is advisable to

00116 ceiling on a closure bracket, for which

00117 the locking plate mentioned above counts to lock

00118 apply. This locking occurs under the control of

00119 elastic closure wall or the elastic closure

00120 floor. For example, the closure

00121 cover relative to the closure plate or the closure

00122 bracket can be rotated so that a with the closure

00123 ke connected locking arm in positive engagement with a

00124 locking section on the bracket, for example

00125 integrally formed with the closure plate, kick

00126 can. To secure transport and especially Origi-

00127 quality assurance it is alternatively or in combination with

00128 of the above-mentioned requirement possible, the closure opening

00129 externally to be provided with a removable masking tape

00130 hen. 00131

00132 An essential concept of the registered object

00133 is also seen in the fact that the self-closing lock

00134 Conclusion, the closure cover and one in the closure

00135 finally arranged locking pin, the one

00136 Closes the outlet opening from the inside and at which

00137 closure a pressure increase in the closure for release

00138 leads at the outlet opening through the locking pin,

00139 forms a lock chamber which is the fixed one

00140 sealing pin interspersed. Here is a flow

REPLACEMENT LEAF 00141 connection in the closure box preferably at the foot

Given 00142 of the closure pin, either under flow

00143 of the locking pin or by passing the mass

00144 through the locking pin. The bottom is

00145 expanding towards the outlet opening, preferably 00146 expanding funnel-shaped, which is also a

00147 includes pot-like design of the closure bottom.

00148 In the latter version it is preferred to use the actual one

00149 to form the closure base essentially flat,

00150 then on its outer edge into a cylindrical

00151 wall merges. In more general terms, it will

00152 an essential concept also seen in that

00153 a self-closing closure which has a closure

00154 has a pin that has an outlet opening from the inside

00155 closes and being due to a pressure increase in

00156 the closure of the closure pin the outlet opening

00157 releases a cover blanket essentially flat,

00158 is elastic, however, so that the release

00159 the closure opening from the elasticity of the closure

00160 blanket results. The last mentioned concepts

00161 of an annexes appropriate closure can in another

00162 detail with one or more of the above in

00163 With regard to the above described in detail

00164 concept highlighted features can be combined. 00165

00166 Further details of the invention result from the

00167 below description of exemplary embodiments in

00168 with reference to the accompanying drawing, in which shows: 00169

00170 FIG. 1 shows a cross-sectional illustration of an

00171 closing closure, attached to

00172 a bottle or tube mouth, in one

00173 first embodiment; 00174

REPLACEMENT LEAF 00175 Fig. 2 is a self-closing closure according to

00176 Fig. 1 in a second embodiment? 00177

00178 Fig. 3 a closure corresponding to Fig. 1 or

00179 Figure 2 in a third embodiment. 00180

4 shows a section through the object according to FIG.

00182 3 along the line IV-IV; 00183

5 shows a section through the object according to FIG.

00185 3 along the line V-V. 00186

00187 The total in all embodiments in the plastic

00188 spraying process, for example made of polypropylene or

00189 made of polyethylene, closure 1 has as

00190 essential elements an upper closure element 2 and

00191 a lower locking element 3 and a locking pin

00192 open 4. 00193

00194 In the embodiment of FIG. 1, as in

00195 the further exemplary embodiments, the upper

00196 closing element 2 pot-like with an essentially

00197 flat closure blanket 5 and an essentially cylindrical

00198 drischer closure wall 6 formed. 00199

00200 In the cover blanket 5 there is an outlet opening 5 '

00201 formed, which by a closure tip 7 of

00202 locking pin 4 in the illustrated rest position

00203 stand is locked. The locking pin 4 has

00204 in detail a frustoconical tip. A

00205 conical surface 7 'of the frustoconical tip acts

00206 sealing with a correspondingly shaped surface 6 '

00207 blanket 5 together. 00208

REPLACEMENT LEAF 00209 In the exemplary embodiment according to FIG. 1, the bottom

00210 right closure element 3 one with an internal thread

00211 formed connection piece 8. The connector 8

00212 merges into a closure plate 9, which has a recess

00213 tion 10 forms in which a locking pin base 11

00214 is included. The recess 10 is provided

00215 hen that in one on a bottle mouth 12

00216 screwed condition above a bottle neck

00217 13 in cooperation with the recess 10 an approximately

00218 gives cylindrical space of low height, in which

00219 the locking pin base 11 can be positively retained. 00220

00221 The closure plate 9 is also beginning with the recess

00222 tion 10 radially inward in its cross section

00223 reduces to such a thickness as for the

00224 closure base 14 is required so that the elastic

00225 did the necessary deformation. One in wide

00226 rer detail bottle or tube, not shown

00227 forms a bulk storage room. The closure 1 can

00228 also, for example, as or in the area of an exit

00229 nozzle of a trigger pump can be provided. 00230

00231 The connecting piece, possibly together with the

00232 closure plate 9 can also be used as a closure

00233 tion. 00234

00235 Next is in the embodiment of FIG

00236 locking pin 4 starting from the locking pin foot

00237 11 is initially tubular in the area 15. in the

00238 connection to the tubular region 15 are radial

00239 outlet openings 16 formed in the locking pin 4

00240 det, which is in flow connection to the tubular

00241 area 15 stand. In the embodiment is one

00242 radial outlet opening 16 is shown. For example, three such can be distributed over the circumference

REPLACEMENT LEAF 00244 outlet openings 16 may be provided. About the pipe art

00245 gen area 15 and the outlet openings 16 can be mass

00246 from the inside of the tube 12 into the closure chamber 17th

00247 be routed. 00248

00249 The section of the lower part which forms the closure base 14

00250 closure part 3 closes with funnel-shaped expansion

00251 tion to a pipe part 18, which in the execution

00252 example according to FIG. 1 is designed such that it

00253 bar on the outer wall of the locking pin 4, in which

00254 sen tubular region 15, abuts. For example one

00255 such design does not necessarily require that the

00256 area of the flexible closure base 14 is smaller than

00257 the opposite surface of the blanket 5, there

00258 also a spreading of the closure base from the foot

00259 rich of the locking pin 4 lead to stretching

00260, the lifting of the cover 5 from the

00261 locking pin tip and thus a release of the

00262 step opening allows. 00263

00264 The closure base 14 continues in an approximately cylindrical

00265 over section 19, which is connected to the upper

00266 closing element 2 is connected by clips. This is in the

00267 upper closure element 2 an inner circumferential school

00268 ter 20 formed. Furthermore, the upper locking element

00269 ment 2 extending down from the ceiling, one

00270 sealing lip 21, between which sealing lip 21 and one

00271 inner wall 6 'of the closure element 2 an end face 22nd

00272 of the cylindrical wall 19 is sealingly received. 00273

00274 The - with pasty mass - hydraulically effective extension

00275 ung a (with respect to a radial in cross section) the

00276 closure wall or in the specific embodiment

00277 of the closure base 14, which opposes the closure cover 5

00278 overlying stretches is smaller than the effective one

REPLACEMENT LEAF 00279 (inner) surface b of the blanket 5. This is

00280 to lift the ceiling 5 when the pressure increases in

00281 inside the closure chamber 17 leading pressure setting

00282 bar. 00283

00284 As can also be seen from FIGS. 1 to 3, is preferred

00285 the interaction between the closure tip 5 and

00286 of the outlet opening 5 'created so that a small

00287 surface 6 'or in the extreme an edge 6' 'on the surface

00288 7 'of the closure tip 7 rests. So is a high one

00289 Surface pressure and thus tightness achieved. 00290

00291 The cylindrical wall 6 of the upper closure element

00292 2 is further formed with such an extension,

00293 that an overlap of the closure base 14 and also the

00294 tubular section 18 up to the area of the

00295 end plate 9 is given. Between an inner wall

00296 of an upper closure element 2 and an outer edge

00297 of the closure plate 9 basically remains a gap

00298 S, the axial mobility of the parts to each other

00299 enables. 00300

00301 As can be seen in particular from FIGS. 3 and 5,

00302 is between the closure plate 9 and the closure cover.

00303 ke 5 - mediates via the cylindrical wall 6 - one

00304 Lockability given by locking arms 28

00305 of the cylindrical wall 6, which in the closed state

00306 engage under locking sections 26 which are firmly connected

00307 the or integrally formed with the closure plate 9

00308 det. The locking arms 25 are preferably one

00309 in one piece with the cylindrical wall 6,

00310 inwardly projecting to the closure plate 9. Since that

00311 upper closure element 2 relative to the lower closure

00312 closing element 3 is rotatable, an outer wall of the

00313 section 19 and an inner wall section 6 '' 'of the wall

REPLACEMENT LEAF 00314 fertilizer 6 slide against each other, the lock at

00315 need be made and canceled. 00316

00317

00318 The cylindrical wall 6 is so individually designed

00319 tet that it in its upper, on the blanket 5th

00320 adjoining the inner wall section 6 '' '

00321 area outside and inside essentially cylindrical (with

00322 Exception, for example, due to the shape of the taper),

00323 before the cylindrical shape continues on the outside,

00324 but with the inner surface starting from the shoulder

00325 20, widens conically towards a lower edge. 00326

00327 In addition or even alone, the delivery

00328 was also the outlet opening 5 'covering an outlet

00329 adhesive 27 may be provided. The masking tape 27 is preferred

00330 so procure that they are residue-free from the

00331 closure 1 is removable to accommodate use.

00332 The cover 27 also provides tamper evidence

00333. 00334

00335 To dispense mass is in the container or

00336 Tube 12 exerts pressure, for example a tube

00337 squeezed so that the pressure in the sealing chamber

00338 17 increased. This pressure increase leads to a take off

00339 the blanket 5 from the locking pin tip 7, there

00340 the closure bottom can deform elastically. The

00341 dispensing opening 5 'is released. In the course of afterwards

00342 enables pressure equalization

00343 bottom 14 in its original shape and the closure

00344 1 is closed again. The movement of the breech

In absolute terms, 00345 dens 14 is negligible here. Fracture-

00346 parts of a millimeter are sufficient. 00347

REPLACEMENT LEAF 00348 In the area of the lower one, with an internal thread

00349 Deten connector 8 is still a cylindrical, with

00350 distance to the connecting piece 8 extending wall 23

00351 provided. For example, this can be

00352 final geometries may be advantageous. 00353

00354 The embodiment according to FIG. 2 corresponds to the embodiment

1 with the exception of the following differences.

00356 de. 00357

00358 The locking pin 4 is in the embodiment according to

00359 Fig. 2 massive. It has a locking zipper

00360 fenfuß 11, the different, for example three

00361 spokes 24 on an inner surface of the closure plate 9

00362 supports and there otherwise in the same way as in

00363 of the embodiment of FIG. 1 is held in a form-fitting manner

00364 is screwed onto a bottle or tube 12 in a

00365 th condition. 00366

00367 The mass can pass between the spokes 24 in the

00368 closing chamber 17 flow. 00369

00370 In the same way as in the previously described embodiment

00371 ungsform has the lower closure member 3 a

00372 closure base 14, which extends approximately funnel-shaped

00373 tert. This closure bottom is also so elastic

00374 makes that a necessary stretch stock for a

00375 Lifting the cover blanket 5 from the locking pin tip

00376 ze 7 can be obtained. 00377

00378 In the embodiment according to FIG. 3, the locking pin is

00379 fen 4 again hollow or tubular in its lower region

00380 well trained. Furthermore, the closure

00381 plate 9 as well as the closure base 14 in one piece

00382 the locking pin 4, in the lower area thereof,

REPLACEMENT LEAF 00383 forms. It is another essential simplification

00384 of the closure 1 achieved in total. It only consists of

00385 two parts. 00386

00387 It is essential that the closure base 14, when

00388 example according to FIG. 3, by height-related tierarti-

00389 ge spacing to the closure plate 9, due to its

00390 ner design has an expansion reserve that a

00391 Lifting the blanket 5 from the locking pin tip

00392 ze 7 enables. 00393

00394 The cross-sectional view according to FIG.

00395 loaned that the locking pin 4 in the embodiment

3 according to FIG. 3 three distributed in a star shape over the circumference

00397 has radial outlet slots 25. 00398

00399 The in the above description, the drawing and

Features of the invention disclosed in the claims can

00401 both individually and in any combination for

00402 the realization of the invention may be of importance.

00403 All disclosed features are essential to the invention. In

00404 the disclosure of the application is hereby also the 00405 disclosure content of the associated / attached priority documents 00407 (copy of the prior application) 00407 included.

REPLACEMENT LEAF

Claims

00408 CLAIMS 00409

00410 1. Self-closing closure (1), especially for

00411 a container or a tube (12), preferably for

00412 pasty or fluid masses, with a sealing blanket

00413 (5), which has an outlet opening (5 '), and one

00414 in the closure (1) arranged locking pin (4),

00415 which closes the outlet opening (5 ') from the inside,

00416 whereby due to an increase in pressure in the closure (1)

00417 the locking pin (4) clears the locking opening (6)

00418, using one of the closures (1)

00419 nenden elasticity, characterized in that the

00420 closure blanket (5) with an opposite, preferred

00421 as a closure bottom (14) of a closure chamber

00422 (17) forming elastic closure wall

00423, so that the closure cover (5) using the ela

00424 stity of the closure wall relative to the closure

00425 pin (4) to release the closure opening (6) spring

00426 bar. 00427

00428 2. Self-closing closure according to claim 1 or

00429 in particular afterwards, characterized in that a

00430 inner surface effective with respect to a mass pressure (a)

00431 the closure wall is smaller than an effective interior

00432 surface (b) of the closure cover (5). 00433

00434 3. Self-closing closure after one or more

00435 of the preceding claims or in particular according thereto,

00436 characterized in that the closure cover (5) in

00437 is essentially rigid. 00438

00439 4. Self-closing closure according to one or more 00440 of the preceding claims or in particular according thereto,

00441 characterized in that the closure cover (5) through

00442 a lock can be fixed.

REPLACEMENT LEAF 00443 5. Self-closing closure after one or more

00444 of the preceding claims or in particular according thereto,

00445 characterized in that the locking on a

00446 Locking bracket, overlapping the elastic

00447 closure wall is realized. 00448

00449 6. Self-closing closure after one or more

00450 of the preceding claims or in particular according thereto,

00451 characterized in that the locking pin (4)

00452 is fixed. 00453

00454 7. Self-closing closure after one or more

00455 of the preceding claims or in particular according thereto,

00456 characterized in that the outlet opening (5 ')

00457 externally with a removable masking tape (27)

00458 covers. 00459

00460 8. Self-closing closure after one or more

00461 of the preceding claims or in particular according thereto,

00462 characterized in that the closure chamber (17) from

00463 the locking pin (4) is penetrated. 00464

00465 9. Self-closing closure after one or more

00466 of the preceding claims or in particular according thereto,

00467 characterized in that the locking pin (4) over

00468 part of its length is tubular (loading

00469 rich 15), for the passage of mass into the locking

00470 chamber (17th 00471

00472 10. Self-closing closure after one or more

00473 ren of the preceding claims or in particular

00474 according to, characterized in that the closure cover (5)

00475 on a pot-like, overall to the locking pin

00476 (4) opening upper closure element (2)

00477 det.

REPLACEMENT LEAF 00478 11. Self-closing closure after one or more

00479 ren of the preceding claims or in particular 00480 according to, characterized in that the closure cover (5) 00481 is clip-retained on the closure base (14).

00482

00483 12. Self-closing closure after one or more

00484 ren of the preceding claims or in particular 00485 according to, characterized in that a pot wall (6)

00486 of the upper closure element (2) as one of the closure

00487 floor (14) covering outer covering wall

00488 forms. 00489

00490 13. Self-closing closure after one or more

00491 ren of the preceding claims or in particular

00492 according to, characterized in that the locking pin

00493 (4) in one piece with a central area of the locking plate

00494 dens (14) is formed. 00495

00496 14. Self-closing closure after one or more

00497 ren of the preceding claims or in particular

00498 according to, characterized in that the locking pin

00499 (4) below the closure base (14) with a fastening

00500 range of the closure (1) connected in one

00501 such a fastening area is positively supported or

00502 with such a fastening area in one piece

00503 forms. 00504

00505 15. Self-closing closure after one or honorary

00506 ren of the preceding claims or in particular

00507 according to, characterized in that the closure bottom

00508 (14) above a locking pin foot (11) on the

00509 end pin (4) is connected. 00510

00511 16. Self-closing closure (1), in particular for

00512 a container or a tube (12), preferably for

REPLACEMENT LEAF 00513 pasty or fluid masses, with a sealing blanket

00514 (5), and a lock arranged in the closure (1)

00515 end pin (4) of an outlet opening (5 ') of

00516 closes inside, due to a pressure increase in

00517 the closure (1) the locking pin (4) the outlet

00518 opening (5 ') releases, using one of the

00519 conclusion (1) inherent elasticity, thereby

00520 shows that the fixed locking pin (4)

00521 with one opening towards the outlet opening (5 ')

00522 closure bottom (14) formed closure chamber 17 through

00523 sets. 00524

00525 17. Self-closing closure (1), in particular for

00526 a container or a tube (12), preferably for

00527 pasty or fluid masses, with a sealing blanket

00528 (5), which has an outlet opening (5 '), and a

00529 locking pins (4) arranged in the lock (1),

00530 which closes the outlet opening (5 '),

00531 due to an increase in pressure in the closure (1) of the

00532 end pin (4) releases the closure opening (6),

00533 using one of the lock (1) inside

00534 elasticity, characterized in that the fixed

00535 en locking pin (4) partially tubular

00536 and as the sole line connection between one

00537 bulk storage space and a lock chamber (17) is used. 00538

00539 18. Self-closing closure (1), in particular for

00540 a container or a tube (12), preferably for

00541 pasty or fluid masses, with a sealing blanket

00542 (5), which has an outlet opening (5 '), and a closure pin (4) arranged in the closure (1),

00544 which closes the outlet opening (5 '),

00545 due to an increase in pressure in the closure (1) of the

00546 end pin (4) releases the closure opening (6),

00547 using one of the lock (1)

REPLACEMENT LEAF 00548 elasticity, characterized in that the closure

00549 (1) from two oppositely oriented and with each other

00550 snap-connected pot-like closure elements (2, 3)

00551, one with an inflow opening and one

00552 outlet opening (5 ') provided closure chamber (17)

00553 form.

REPLACEMENT LEAF