DE2115720A1 - Safety lock - Google Patents

Description

DR-R ₁ POSCHENRIEDEr

DR. P. ΓιO'ITTNER F 0155

DIPL-Γ. . - · ..}. MÜLLER As / K

I'-r.U:. ; ·. .,old

8 MONKS 80

Lucile-Graha-Strasse 38

Telephone 443755

Eyelet Specialty Company, PO Box 10, Wallingford , Connecticut 06492 (V.St.A.)

Security lock

The invention relates to a secured against unauthorized intervention, but to be opened when necessary Closure, for example a closure for bottles, which could be dangerous in unauthorized hands solid substance, for example in the form of tablets, may contain.

With the recent increase in the use of drugs, tablets ο «the like, each for a specific and prescribed one Intended use and for use by a certain household member has also increased the risk of that unauthorized persons, especially small children, gain access to the contents of such containers. It has also become increasingly difficult, if not impossible at all, to adequately monitor children, to safely deny them access to materials and substances that may be dangerous to them could be.

The invention is accordingly based on the object of providing containers for materials and substances of the appropriate

109085/0203

given kind a precaution to protect against unauthorized persons To create access »

This is intended according to the invention by a construction be achieved in which a correct sequence of independent movements of fastenable closure parts the The prerequisite for this is that the contents of the container can be made accessible.

The solution to the problem should be through a simple construction happen, which can be produced by injection molding or transfer molding.

In particular, a container and an associated closure cap are to be created that are integrally formed with Formations are provided that secure the closure of the container against unauthorized access without any other means To do something.

The invention provides an improved screw cap construction that attaches to an externally threaded Neck of a glass, metal or plastic bottle of conventional design can be screwed on and said Backup effected.

The object on which the invention is based is to be achieved by a construction that has a full Automation, namely when filling and closing as well as when assembling with the locking device made possible.

The invention thus creates a lock which is secured against unauthorized access and which is cost-saving from the ground up and is dependable on liquid or storage

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dry filling goods are suitable and the automatic production of security against unauthorized access as necessary The result of attaching the closure and propelling it into the closed position on the container is made possible.

In the drawing, preferred embodiments of the invention are shown, for example.

Fig. 1 is a perspective view illustrating a container with one thereon attached closure device according to the invention;

Fig. 2 is an exploded view of the two parts of the latch structure of Fig. 1 in larger scale and partly broken away and longitudinally sectioned for illustration of internal training;

FIG. 3 is a partial illustration of attached and fastened parts according to FIG. 1 in partially broken away and a sectional view taken along the line 3-3 in FIG. 1;

FIG. K is a view similar to FIG. 3 to illustrate the initial axial displacement which is a precondition for unscrewing the safety lock according to the invention;

Fig. 5 is a section, substantially along the radial plane 5-5 iti Fig. 1 to illustrate a modified embodiment;

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Fig. 6 is a perspective view of the inner part of the closure according to FIGS. 5 »and

Figure 7 is a partially broken away perspective view of the outer portion of the closure according to FIG. 5.

In short, the invention is based on the idea of creating an optionally openable locking device, which is secured against unauthorized interference in the sense that a correct sequence of two is on purpose to be brought about and independent movements of lockable closure elements is required to the content of the bottle secured by the closure or the like. to make accessible.

The special construction according to the present description consists essentially of a bottle part with a threaded neck and a closure cap. The latter consists of plug-in parts that can be rotated relative to one another, the inside of which can be screwed onto the neck and the outside of which is used for manual operation. The parts of the cap are connected to each other with a restricted backlash in the axial direction, and a deformable device on one of the tubular parts stands with during the relative movement of the parts over the distance of the dead corridor a corresponding active part of the other tubular Member in cam engagement. * In this way, the shift be brought about the distance of the dead corridor before the cap is removed from the bottle can.

109885/0203

As shown in Fig. 1, a cap 10 is provided according to the invention for closing a bottle 11 in such a way that the arrangement is indistinguishable from any conventional screw cap closure. In the illustrated embodiment 11, the bottle having a bottle body 12, is starting, substantially broadened from the neck 13 of the, and the neck 13 has, as shown in FIG. 3 ersichblich, a reduced diameter discharge opening ^ k and an external thread 15 'Therein, however, Any correspondence of the closure according to the invention with conventional constructions is exhausted.

According to the invention, the closure cap 10 has nested parts, namely an inner 16 and an outer 17 "which are shown separately in FIG. 2 and in the assembled state in FIG. 3." The outer part 17 is used only for handling, and the inner part 16 is used solely to close the bottle opening 14. To remove the cap 10 from the bottle 11, an intended relative movement of these two mutually inserted parts in the axial direction is required in order to move these two parts sufficiently deep i;
to enable.

push them deep enough into one another to unscrew them

The parts 16, 17 can be generally tubular and the cylindrical surfaces 18, 19 are adjacent to one another. beard and enable a relative rotation of the parts with good mutual guidance «The game 18. (Fig. 3 and 4) between these surfaces is of course in the interest of the The rest of these figures are shown greatly exaggerated for clarity. The closure parts 16, 17 have interacting elements that cover the distance of the relative

+ and to connect under frictional connection

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determine the movement of these parts with dead gait. As shown, the outer part 17 surrounds the inner part 16 complete, and radially inwardly directed formations on the part 17 prevent falling out of the inner one Part. The closed end wall 20 forms a limitation of the freedom of movement of the inner part in FIG axial direction, and a flange or bead 21 defines the other limit at the open end of the outer part 17. The part 17 is shown as a part made of plastic by injection molding or transfer molding, and suitable materials are, for example, polyethylene, polypropylene or polystyrene of medium impact resistance (medium-impact polystirene), with polypropylene being preferred. The part 17 is therefore elastic to a limited extent deformable. The inner radial dimension of the opening on the bead 21 in the de-energized state is preferably somewhat less than that of the outer surface 18 of the inner part 16, so that when pushed over a slight mutual Obstruction occurs and a certain amount of force is required to assemble the parts a locking of the bead 21 follows behind the front edge of the inner part, so that the parts 16 and are kept in the assembled state.

The inner part 16 can also be made of plastic. It is relatively rigid and can be made of polystyrene by injection molding or transfer molding or pressed from a urea product. Its open end is provided with a normal thread 22 corresponding to the bottle neck thread 15. Its other end is closed for a function to be described by a wall of special design. This end wall has an outer radial shoulder section 23 and a central one

109885/0203

Area zh in a common radial plane for the suitable mounting of a sealing washer 25 », for example made of cork or the like covered with foil. When the part 16 is attached to the bottle at 15, 22, the seal can be liquid-tight, and the protruding axial edge of the neck 13 presses the sealing washer 25 against the shoulder 23. The skin friction which accompanies this compression deformation and which over several turns Sufficient friction of the thread engagement is of course sufficient to keep the bottle upright when it is closed *

As already mentioned, a dead gear connection is used to couple and decouple the inner and outer parts 16, 17, and the condition illustrated in FIG the lower end of the inner part 16 is located substantially on the collar and is shown at a slight axial distance DJ therefrom. At this one boundary of the dead corridor, the parts 16, 17 are uncoupled; they are therefore then freely rotatable with respect to one another, and this means that it is not possible to cancel the frictional connection between 15 and 22 and between 13, 25 and 23 by rotating the outer part 17 of the cap. Preferably, the parts 16, 17 are normally loaded by an elastic device which urges them into this one limit position (FIG. 3), so that the outer cap 17 is normally freely rotatable with respect to the inner cap 16. In the event of a relative displacement of the two parts in the axial direction from this first or normal limit position, which is brought about, for example, by depressing the outer cap 17, this elastic preload becomes

109885/0203

overcome, .and the parts 16, 17 are coupled. The extent of such. Relative shift is indicated in FIG. K at p_g.

In the embodiment shown, this coupling effect is based on a worn on the outer cap 17, deformable toothing or driver element 26, which is in the course of the movement within the limits of the dead passage over the distance Dg with a conically flared formation 27 on the inner cap 16 in cam engagement is located. An axial, nozzle-shaped extension 28, with the closed end of the part 16 in one piece is connected, has toothed or driver formations 29 on the inside, with which the toothed or driver formations 30 of the part 26 for engagement arrive when they are deformed radially outward by the cam flank engagement (Fig. 4).

The deformable member 26 is shown in four parts and all of these parts are integrally molded with the end wall 20 of the outer cap and are spaced about the central axis. Basically, these elements 26 are formed within a generally frustoconical, tubular, axial projection within the cap 17; the outer wall of this projection converges with an inward taper and the toothed or driver formations 30 are molded therein. The Xnnenwand this projection may be a cylindrical hole 31 having a substantial, outward extension or chamfer 32 in the vicinity of the projecting end \ the inclination of the slope 32 is preferably adapted essentially to the area of the 27th In the circumferential direction at a distance from each other,

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radial slots 33 in this projection separate the elements 26 and complete their delimitation. As can be seen, thanks to this construction, the elements 26 are formed to freely downwardly directed ends, the weakened and therefore corresponding to the radially outwardly directed The cam flank effect is deformed from the intersection of the axial path with the conically flared flank 27 and the mutual hindrance results in an axial relative movement. The available dead aisle travel distance D2 is such that one radial locking at 29 »30 is ensured when the outer cap 17 is pressed firmly against the bottle will. This strong pressure must be maintained while the torque in the sense of unscrewing is brought into effect, and when this pressure is removed, the elastic effect of the parts 26 exerts on the Slope or the flank 27 a reaction force from, under which returns the outer cap 17 to its normal position of unimpeded rotation as shown in FIG. For reclosing of the bottle it is also necessary to press the outer cap 17 into the position shown in FIG. in order to then bring the torque for tightening and sealing to effect «

In the modified embodiment according to FIGS. 5 to 7, the parts are practically the same, and the same reference numerals have therefore been used wherever possible. The only significant difference is the creation of a ratchet effect with torque transmission only in the Anschraubrichtung (one-way clutch) "By this action, the parts 16, 17 is coupled in the engagement direction, so that no force for Ni vile during attachment of the closure rdrücken the outer cap 17 needs to be expended * As best seen in Figure "ό ersiehtIieh _s ./rls* i ^ r

upper part of the circumference of the inner, tubular part 16 'has a plurality of ratchet teeth 35 on the lateral surface. For the illustrated case of a right-hand thread the teeth 35 for the torque transmission in clockwise rotation and for a free mutual skipping formed in the opposite direction of rotation. Each tooth 35 thus has a short radial flat surface 36 between the outer radial limit of a large inclined surface and the inner radial limit of the initially adjacent large inclined flat surface. The radial flat surfaces 36 are open to attack one or more pawl members 37 for clockwise drive (Fig. 6).

At least three of these pawl members 37 are preferably provided, which are arranged at equal intervals over the circumference and which ensure a symmetrical torque transmission in the ratchet drive as well as a relatively free jumping over of the pawls when rotating in the opposite direction of rotation Projections or tabs shown extending from their integral connection with spaced apart portions of the hole of the outer tubular member 17 '(Fig. 7) both circumferentially and radially inward. To simplify the mold construction, the foot or the Root of each latch nose 37 ^ n of one side wall 38 of an axial groove 39 arranged in the bore of part I7 ¹ , the protruding end kO of each nose 39 abuts for the rotation in the sense of attaching the cap to the next-lying flat surface 36 of a ratchet tooth on «When turning in de In the opposite direction, the noses 37 are naeli outside, in which the bsGT'affeiKie Ntii; 39 educated! free at ^ i h :. ' J.ijoite-gosciiv / enlct _s so that they have the Ra.i'selift «.2-iihne about—

«: F _? ^ Q & f.i ^ »■. ;: -ν

manner described above, except that a relative rotation of the part 16 within the part 17 in the counterclockwise direction It is desirable to ensure that the pawls 37 are inserted between the ratchet teeth 35 without damage to enable.

In the above description, there has been an improved latch construction described, through which the outlined «task is solved and which can be used in is characterized by a wide range of applications, regardless of whether the container content is a liquid, is a powder or a substance in other solid form. The bottle can be quite conventional, and nevertheless, a security is given in a reliable manner by the possibility of a sealing hold under static To create friction and by applying the correct combination of an axial displacement of a torque in the Sense of unscrewing to remove the closure. In the case of the lock with ratchet action according to FIGS. 5 to 7 the lock is not affected in any way by skipping the ratchet teeth. That when skipping the Ratcheting noises occurring can even serve as a warning signal for a person who is half asleep or in the dark in the medicine cabinet for an aspirin (a relatively harmless tablet, which is why is not secured by a safety lock) and accidentally engages a narcotic or another Wise dangerous prescription drug (contained in a container with a ratchet safety lock) is) .

Although the invention has only been described on the basis of preferred embodiments, modifications are possible without departing

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- 12 possible from the idea of the invention

Claims

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109885/0203

Claims (1)

- 13 claims Optionally openable lock, secured against unauthorized access, consisting of a container including an externally threaded neck and an optionally openable and closable opening on the End of its axial expansion and a closure cap, characterized in that the closure cap consists of an inner and an outer, rotatable relative to this, tubular member that the inner member has one closed end and one for engagement with the Having threads on the neck suitably formed soffit that interlocking on the tubular members Devices (such as stops) are provided, which have a dead gear (a relative movement of the parts against each other in the axial direction) limit that the tubular members free at one end of the dead passage are mutually rotatable that deformable devices on one of the tubular members with a associated part of the other of the tubular members in the course of the displacement in the sense of the dead passage can be guided out of one limit position for engagement, so that when the closure cap is attached to the neck rotation of the outer tubular member to unscrew the cap will result in threaded engagement Can only loosen after the tubular Links are shifted against each other over at least part of the movement path of the dead corridor * 2. Closure according to claim 1, characterized in that the tubular members adjacent and overlapping, substantially cylindrical Have surfaces which guide the tubular members essentially concentrically * 3 "Closure according to claim 1 or 2, characterized in that the tubular members have interlocking ratchet elements with operative engagement in the direction of rotation of the screwing of the cap onto the neck in such a way that a free rotatability of the parts against each other only when the outer tubular member is rotated in relation to is given on the neck in the sense of unscrewing the cap. 4, closure according to one of claims 1 to 3 »characterized characterized in that the verfortnbaren device is elastically deformable. 5 · Closure according to claim k _f, characterized in that the deformable device has a radially deformable element which is carried on one of the tubular members and has an elastically deflectable section, which in the course of the relative movement over the distance of the dead passage of one End off with part of the other tubular member in a mutual overlapping relationship " 6, closure according to claim 5 »characterized in that that the relationship of overlap at essentially consists of all relative positions of the tubular members along their axis » 7. Closure according to claim 5 or 6, characterized in that that the degree of mutual overlap towards the axial relative movement progressively increases from the one limit a Closure according to claim 5 or 6, characterized in that the deformable element and the other tubular Member has formations which can be brought into engagement in the manner of a driver, which in the absence of deformation of the deformable Link are disengaged and the tubular members in a relative movement over the Lock section of the dead gear away from one limit in the axial direction against relative rotation. Optionally openable lock secured against unauthorized access, consisting of a container with a neck with an external thread and with a selectively openable and closable opening in the end of it Axial expansion and a closure cap, characterized in that the closure cap has an inner and has an outer tubular member which is rotatable with respect to the latter, of which the inner member is a closed one End and has a bore which is designed such that it engages the threads of the neck that the outer jacket of the inner tubular member is substantially cylindrical and has a tubular extension which projects axially away from the open end of the inner tubular member, that cooperating holding devices on the tubular members a relative mobility of the two Limits limbs in the axial direction in the sense of a dead gear that the tubular limbs at one limit the distance of the dead gear are relatively freely rotatable that on the outer tubular member projecting means are worn, which are relatively axially displaced in a relative to the one limitation of the distance of the dead gear Positioning the tubular members in a relative rotation preventing engagement with a tubular extension are, however, essentially at the boundary relatively free of anything that hinders the relative rotation Are engaged so that the relative movement 109885/0203 ~ ^Ui ~ of the tubular members from the one boundary the precondition for the transmission of drive to the inner tubular member in the sense of unscrewing the Cap / when grasping the outer tubular member forms. 10. A closure according to claim 9 »characterized in that an elastic device which acts between the two tubular members, the tubular members Limbs in the direction against said one limitation burdened. 11. Closure according to claim 9 or 10, characterized in that that the outer tubular member has a closed end which is the closed end of the inner tubular Member overlaps and that the projecting means includes an element from the closed End of the outer tubular member is carried. 12. Closure according to one of claims 9 to 11, characterized characterized in that the holding device for limiting the relative axial movement of the tubular members inwardly directed axially spaced from one another on the outer tubular member Elements, so that the inner tubular member is at all times completely within the outer tubular Member is included. ' 13 · Closure according to claim 11 or 12, characterized in that that the projecting member is generally longitudinally within the appendix on one with respect to the axis of the tubular member offset point extends and elastically deformable radially outward is, and that a cone-like widened cam surface .radial 109885/0203 - 17 - forms part of the closed end of the inner tubular member and is configured such that that it is in the course of the relative movement of the tubular members over the distance of the dead passage of their a boundary from which the path of the projecting element intersects 14. Closure according to claim 13 »characterized in that that the protruding element is one of several such elements which are arranged around the axis at intervals along the circumference and which all are in a similar relationship of the intersection with the conically flared surface 15 · Closure according to claim 13 or 14, characterized in that the projecting element and the nozzle-like extension cooperating teeth for the have a relative rotation inhibiting engagement * Λ6 » closure according to claim 15, characterized in that the teeth on the extension are generally cylindrical around the axis and that the teeth on the protruding element are arranged around the axis in a conically tapered surface, the ± m course of the relative displacement over the distance of the dead gear from the one limit continues to be deformable in terms of adaptation to the cylindrically arranged formations on the stutscen-like extension. 17 · The lock can be opened to prevent unauthorized access and consists of a container with a neck with an opening that can be optionally opened and closed at the end of its axial expansion and from a closure cap, characterized in that - 18 - 109885/0203 the closure cap has an inner and an outer tubular member rotatable with respect to it, that the outside of the neck is designed in such a way that it passes through it after the cap is put on Application of a measure can be closed, the at least one component of which a rotation in a first The direction for closing or in the opposite direction of rotation for opening includes the inner link has a closed end and a bore which is adapted to be attached to the outer formations of the neck in the aforementioned measure engages that between the tubular members a device is provided in the manner of a one-way clutch, which when rotating the outer tubular Member located in a first direction of rotation in drive-transmitting «engagement and when rotating of the outer tubular member out of drive transmitting engagement in the opposite direction of rotation and that means including a deformable member on one of the tubular members is provided for selectively connecting the tubular members together for rotation in the said opposite direction of rotation with a corresponding active part of the other of the tubular Members can be guided for engagement, so that the container can be closed without deforming the deformable element is, however, such a deformation is a prerequisite for opening the container by removing it the cap forms. 109885/0203