DE2320956C3 - Screw cap - Google Patents

Description

The application relates to screw closure covers for containers or pipe sockets with a cylinder lock to secure against unauthorized opening according to the preamble of claim 1.

No torque limiters for screw key covers of this type is in the locking seal of the lid as well as the cylinder lock stored for security it is known (DK-OS 2014 130 / SlD-Wefk GmbH ...), using one between the two lids resiliently effective coupling ring this on its radially inner circumferential surface with perpendicular-axial To provide grooves into which the bolt parts of the centrally guided cylinder lock are axially guided intervention. Furthermore, this coupling ring has underlying radial recesses and is by means of axially acting compression spring held pressed against the bottom of the inner threaded cover part, in such a way that that lugs protruding like a cam from the floor in these coupling ring recesses for prevention both cover parts engage in the vertical direction under the action of spring pressure or when they are reached counter to the predetermined tightening torque / ■ read the spring pressure effect disengaging the coupling ring to freak out. To secure against unauthorized opening of the cover, however, are means Turning the key in the cylinder lock moves the bolt parts radially inward and out of engagement opposite brought the axial longitudinal grooves of the coupling ring, which acts as a spring between the two cover parts, so that there is accordingly a freely rotatable outer cap.

It can be disadvantageous for such a design of the closure cap with torque limitation be that for the engagement of the bolt parts from the cylinder lock in the "vängsnuten on the inner peripheral surface of the coupling ring distributed at equal intervals, these arranged in a corresponding Adjustment to the grooves must stand / weeks of radial insertion movement.

The object of the invention is now to provide a latch actuation from the cylinder lock for such screw cap with torque limitation / u facilitate. The aim is also to work on the safety claw coupling part Between the two parts of the cover, the force of vlinderschloli keep yourself away.

This problem is solved according to the characteristics of the license plate of claim I.

The progress of the invention ::> t then / u see that now a threaded cover part that is open to the inside is used, which with the upper end by means of a radial wall part inwardly with a concentric lying '■ «paw-like drawn-in part designed in one piece is in which a sleeve-shaped safety claw coupling part held under compression spring force as loading to the outer rotating cap part is mounted axially movably guided in grooves within Jieser pot wall. Inside this safety claw coupling part is in a central hollow / ylinder part of this to protrude inwards further coupling part arranged axially movable, which is outwardly connected to the also embedded therein / cylinder lock from the outer rotating cap part which is positively connected via into a recess of the coupling part engaging pin from the cylinder lock Both coupling parts are then by means of Mutually acting ribs or curved surfaces within the central hollow / cylindrical bearing part of the safety claw coupling part by turning the key in the cylinder lock against each other rotatable and at the same time telescopically axially displaceable with respect to one another, whereby the underneath the safety claw coupling acting compression spring force at least not on the centrally mounted cylinder lock can affect, rather only on the further coupling part held separately from this

Lock part down.

The invention is described in more detail below using an exemplary embodiment. It shows

Fig. 1 shows a central cross-section through the closure cover with different attitudes, mimlieh on the right in the locked state or on the left in the open cylinder lock setting for the cover parts, as

Fig. 2 a sectional drawing along line AB of the left half of the section in Fig. I,

Fig. 3 a development of the run-up curves for the according to the invention interlocking cams or ribs of the coupling parts between cylinder locks and inner threaded cap.

In Figs. 1 and 2, an outer rotating cap part 4 is shown with a handle rib 4 'hollowed out in the middle and an externally pulled down overlapping edge 4 "with rotatably incorporated flange edge 7 ^{IV of} the inner threaded cover part 7. Both cover parts 4, 7 are shown in FIG Axialrk'litung resiliently tensioned, while the flange edge 8 'of a protective jacket 8 enveloping the oswin cover part 7 can be temporarily stored in the cover edge 4 ″. The threaded ^{cover flange 7 IV} is rotatably guided within the rotary cap edge 4 "against tilting in a bead bearing, in which both a bead 9 arranged in the radial direction and an axially downward bead 9 'below the flange 7 ^IV against the radial aligned lying flange 8 'is rotatably mounted. Inside the pot-like narrow-drawn wall part T of the threaded cover part 7, a safety claw coupling part 3 is loosely guided in grooves 7 ″ on both sides by means of engaging ^{lugs 3 V} in a snug fit, and in the axial direction to the outer rotating cap part 4, 4 'acted upon by a compression spring 5 reaching under. Axially outwardly directed cams 3 '"of the safety claw coupling part 3 engage as a connection in the hollow handle part 4' in such a way that when the outer cap part 4 is turned clockwise in the closing direction, the inner threaded cover part 7 over the surface parts of the engaging cams 3 'which are beveled on one side. "is taken until a predetermined lid tightening torque is reached in response to the mutual thread compression pressure between the threaded lid 7 and the container or screw socket (not shown), whereupon the cams 3 '" automatically counter the force of the compression spring 5 Notch out of the handle rib 4 ', and if you turn the outer cap part 4 further, only audibly click over the edges of the hollow rib 4' so that the screw cap can no longer be tightened, but on the other hand can be opened again at any time in the opposite direction of rotation, since then the opposite vertically sloping flanks of the Nu Immediately couple the cken 3 '"into the hollow rib 4', as can be seen in Fig. 2.

The one from below against the bridge-like safety claw coupling part 3 acting compression spring 5 is supported on the one hand against this, on the other hand against a two parts 2 "and 2 with rib extensions 2 'existing, acting upwards towards the lock cylinder 1 Coupling part, for which at the lower flange end 2 '"still a loosely seated plate 6 as a support bearing for for the compression spring 5 uvjschenleger can be placed.

As a result, the safety claw coupling part 3 and the lock cylinder coupling part 2, 2 ″ stand via a mutually supporting compression spring 5 and via mutually engaging ribs 2 'on the coupling part 2 or overrun curves 3 ^IV within the

ι central sleeve-shaped part 3 ^{VI of} the safety claw coupling part 3 on its radially inwardly lying lower edge part 3 'mutually relatively rotatable and at the same time axially displaceable telescopically to one another supported with one another. The lock coupling part 2, 2 'is ^{mounted in an axially movable manner within the sleeve-shaped part 3 VI of} the safety claw coupling 3 and engages through this at its lower edge part 3' in order to correspondingly protrude with a widened end part 2 '" at a distance from the bottom T" of the threaded cover part 7 to be held loosely guided in the center, while it receives the pin 1 'of the lock cylinder 1 upwards in a rectangular central recess in the axial direction.

ι The operation of the verschÜP ⁿ cash SchraubdeckeKmit Drehmnmentbegrenzungist now as follows: In Fig. 1 in the left half of the section of the Schraubverschlußdeckel in the open state of the lock 1 is shown, wherein the SicherheitskLuenkupplungsteil 3 under the action of the compression spring 5 with its cam 3 '' in engagement with the hollow handle rib 4 '. In this position, when the outer cap 4 is turned clockwise, the inner threaded lid part 7 is carried along over the inclined surfaces visible in Fig. 2 until a limited lid tightening torque is reached. After this tightening torque has been reached, the slip clutch 3, 3'" automatically from the handle rib 4 'of the outer rotating cap part 4 or the inclined surfaces of the cams 3''' snap over the lower edges of the handle rib 4 ' Turned closed position, whereby 1'd over the axial pin The lock coupling part 2 is also rotated and its side ribs 2 'with their ends rounded at the bottom run against the curved surfaces 3 ^1V on the edge 3' within the sleeve-shaped part 3 ^{VI of} the safety claw coupling 3. In Fig. 3 a development of these run-up curves is illustrated. As the ribs 2 'run onto the curved surfaces 3 ^IV , the safety claw coupling 3.3''is inevitably pushed in telescopically downward within the threaded cover pot wall T in the axial direction relative to the lock coupling part 2, i.e. with the cams 3'"from the upper one Handle rib 4 'completely withdrawn, as shown in the right half of the section in Fig. 1. By using an ^{inclined surface guide 3 IV with} increasing winding within the hollow cylindrical sleeve-shaped part 3 ^{VI of} the safety claw coupling 3, uniform torque transmission is achieved due to the optionally longer run-up path in the winding oblique surface guide 3 ^IV , the respective dimensioning of the angle of incline also allows the transmission of possibly larger torques with relatively low torque.

The outer cap part 4, 4 'is thus free in the locked state of the cylinder lock 1 rotatable, so the lid is secured against unauthorized use. Can only be done with a key by turning the lock cylinder in its open po- ^ position the coupling part 2 back accordingly

5 6

be rotated, with its side ribs 2 'from the clutch 3 on the one hand, or on the other hand to the ge

Overrun curves 3 ^{IV are} pulled down again, compared to the lock cylinder 1 held axially movable.

As shown in Fig. 2, so that the safety coupling part 2, so that the couplings 2, 2 "

Claw coupling 3, 3 '"to the outer rotary cap and 3 as a unit against each other resiliently supported

(eil 4, 4 'comes into effect again. The force -. interact, while the lock cylinder 1 of

the compression spring S only acts on the safety claws; such force remains unaffected.

For this purpose I sheet drawings

Claims (2)

Patent claims: 1. Screw cap with cylinder lock, consisting of an outer Dn-cap part and an inner cup-like threaded cover part, which mutually interlock over their circumference rotatable and via a safety claw coupling part that limits the thread tightening torque are positively connected to each other, which is under compression spring force by means of beveled Coupling surfaces in a pressed out of the outer rotating cap part to the outside hollow handle rib engages cushioned so that it is when reaching a predetermined Tightening torque automatically disengages, whereby in the closed position of the cylinder lock the outer Rotary cap part is freely rotatable relative to the threaded cover part, thereby characterizing t, that ι a) the cup-shaped section [T) of the threaded cover part (7) at its open end a radially extending wall (7 ^1V ) with a tubular, inwardly open threaded cover that runs concentrically to the cup wall! owns, b) in the cup-shaped section (7 ') the sleeve-shaped Safety claw coupling part (3) in a known manner in grooves (7 ") is guided movably in the axial direction, c) in the safety claw coupling part (3) a split one protruding inwards from this part Coupling part (2) between the one in the safety claw coupling part centrally arranged lock cylinder (1) un. the safety claw coupling part (3) is arranged to be axially movable, with a pin (1 ') of the cylinder lock engages positively in a recess of the coupling part (2), between the safety claw coupling part (3) and the coupling part (2 ") the compression spring (5) is provided, e) both clutches via opposing ribs (T) on the lock coupling part (2.2 ") or curved ^{surface (3 IV} ) within the sleeve-shaped part (3 ^VI ) of the safety claw coupling part (3) when the key is turned in the cylinder lock (1) are mutually rotatable and at the same time telescopic to one another. 2. Screw cap according to claim 1, characterized in that the coupling part (2 ', 2 ") is centered with its inner end (2'") at a distance from the bottom (7 '") of the cup-like retracted cover part (7'). d)