DE7023321U - Two-part screw cap with mutually engaging ratchet-like effective coupling parts. Aττni: Blau KG factory for motor vehicle parts, 4018 Langenfeld - Google Patents

Description

Dr. Werner Bierreth 8 monks 1 / Postfecb 884

Applicant: BLAU - limited partnership

Designation: composed of two parts

Screw cap with mutually engaging ratchet-like effective coupling parts.

The registration concerns one of two parts composite screw cap for Container or as a pipe socket closure with interposed, ratchet-like effective coupling parts, which in the case of Srreichenfeines accordingly automatically disengage the specified cover tightening torque, in response to the thread pressing pressure; outgoing forces.

In the case of screw-thread lids, it is disadvantageous that they are attached to a thread by tightening them too tightly and can only be loosened again with difficulty to open, i.e. they can often only be unscrewed by hand with considerable physical effort, or can only be loosened using mechanical aids ^ especially if there is heavy soiling on the threaded parts. Accordingly, there is a need for such a cover 702332 i2Mt »

To be welcomed in such a way that they can only ever be tightened to a predetermined torque so that they can be easily turned back again. For this purpose, it is known to provide an upper cap part with a freely rotatable, lower actual threaded cover part embedded therein, and to store coupling parts in the form of spring elements with a predetermined clamping force, which then automatically disengage ratchet-like when the corresponding lid tightening torque is reached in the closing direction, so that this The upper part of the rotating cap can only be rotated freely because the coupling parts underneath lock like a ratchet, which means that the lower threaded cover part does not rotate with it and cannot be tightened can be easily opened again at any time, as the cover could not be tightened too tight a handle part pushed out of the upper rotary cap part, or an interposed disc part provided with cams or worked-in helical teeth, engages ¹ also in the axial direction of the lid upwards or downwards under compression spring action in corresponding recesses in the respective other lid part, in order then to be fixed when it is reached Lid tightening torque automatically disengages like a ratchet, so mutual locking of the two lid parts takes place via intermediate suspension elements, and the upper rotating cap part can only be rotated freely, and the tightened lower threaded lid part cannot

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is to be tightened more firmly on a threaded connector, "or in the reverse direction of rotation again easily solvable.

The object of the invention is now for such a two-part composite, from the upper rotary cap part and lower threaded cover part existing screw cap with interposed ratchet-like acting Pederungs coupling parts, a simplified To create design form and at the same time a more appropriate coupling form for both cover parts to each other to mutual engagement on the one hand, respectively. automatic notching on the other hand in a technically practical manner.

The invention is characterized for this in that between the two mutually freely rotatably mounted cover parts outside in the inner circumference of the one Cover part coupling parts are held, which are provided with groove-like recesses in the radial Direction with under pressure spring action, engaging the other cover part like a ratchet, respectively when reaching a predetermined torque tightening force for the screw cap part automatically disengaging coupling elements cooperate ·?

The essence of the invention is described with the aid of exemplary embodiments in the figures. Here show:

Fig. 1 a screw cap in the

Center section with coupling part incorporated according to the invention in a disc shape, or as a bridge part, as well as

Fig. 2 in section mach line II - II in Abbel.

Fig. 3 shows a modified embodiment of the ratchet coupling according to the invention in a center section, and

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Fig. 4 is a sectional drawing after the Line IV - Iv in Fig ^.

In Figures 1 and 2, an upper rotating cap part is denoted by 1 and engages with ^{edge I 1} pulled down from sen over the lower viewing cover part 2, the upper flange edge 2 * is held within the cap edge part 1 "to be crimped downwards, in the usual way still under the flange edge 2 * a container or ear socket edge that is to be closed against the lower edge of the washer ring

* ' seal inserted, resp. according to the picture

sealing ring 3 inserted in a groove below the flange edge 2 * must be used, which at the same time pressed something over the edge of the container or the nozzle, or between them and the screwed-in cover part 2 is pressed in air.

Between these two mutually freely rotatable leakage parts 1, 1 ″ and 2 , 2 ″, a special mkmxmmämm. Part 4 serving to couple the two cover parts is now mounted over the inner circumference of the upper rotary cap part 1, 1 *. For this purpose Both the form of a clutch 3 disc 4 can be used, the nose projections distributed over its outer circumference / for holding within; usually a wave shape 1 '''on the outside

• Has, or can, pulled down cap edge 1 *

s also just a web-like bridge part-dashed-b

shown denoted by 14 are used,

"Which is then diametrically opposite with rabbits"

1 "protrusions 11 into this? Cap edge corrugation l ^nt against

f: rotation is held. Further according to the invention

* ■ grip through recesses M- * coupling elements 5

protruding upwards, which diametrically opposite by means of temporarily stored

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spring 6 pressed radially outward in a grooves pot-like yet ■ · '.. ·. .efuüg 7 of the lower threaded cover g Part 2 as a co-worker, or within of the coupling part 4 above (bet. 14) in groove-like recesses 4 "under the action of a compression spring intervene. These coupling elements 5 will now be when turning the upper cap part 1.1 "via the coupling part embedded in its inner circumference (Disk 4, or bridge part 14) taken along, with which at the same time the lower threaded cover part 2.2 'is rotated accordingly

When turning the lid 1 into its closed position on a container or pipe socket, the lower screw cap part 2 is also clockwise via these coupling parts described above rotated and tightened on a threaded connector with an interposed sealing ring 3, wherein the coupling elements 5 according to each activated compression spring force 6 within the Groove recesses 4 "by counter-bearing to the paraJ · ^ tIeI lying groove edge 41 * each taken along Now occurs in response to the thread pressure that occurs when the lock is pulled a force exceeding the torque tightening force determined in advance for the cover, so will still Turn the upper cap part 1, 1 'with the clutch disc 4 (or bridge part 14) embedded in it and the coupling elements 5 are taken along by the disk part 4 (14) with their on the other side in the closing direction of the lid beveled surface parts 5 * then against the other groove edges 4b (opposite 4a) run up, and in overcoming the corresponding predetermined compression spring force 6 click out of their "sing handle to the grooves 4", so that when you turn the now free

continuously upper cover part 1 these coupling elements 5

only over-

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lock in the manner of a ratchet. However, depending on the respective dimensioned compression spring force 6, the screw cap can only be unscrewed up to a predetermined tightening torque, and when a certain tightening force is reached, the pressure between the upper rotary cap part 1, 1 ^f and the lower screw cap part 2, 2 'latches in response to the corresponding prevailing thread pressure Coupling via parts 4 (14) respectively. 5 automatically off

To open the cover in the opposite direction of rotation, on the other hand, the coupling elements 5 will again automatically latch against the other hat edges 4 & in parallel guidance under the action of the compression spring 6 _{> to} take the lower threaded cover part 2 counter-clockwise to loosen the mutually tightened threads. Since the Sehraubverschlußdeekel could definitely not be tightened too tight in advance, it can be easily loosened or removed again at any time. turn back, whereby the ends of the coupling elements 5 protruding upwards into the cap part 1 are rotated by resting against the edge of the cover "A" until they latch into the key grooves 4 "distributed around the circumference of the clutch disc 4 *

In d * .n Figs. 3 and 4 another modified one simplified design for the invention reproduced where coupling elements 15 go up in one pressed out diametrically in the upper part of the rotating cap Handle part 8 protrude, respectively. after down directly in grooves 9 on the circumference within

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a pot-like retracted part arranged distributed intervene, respectively. reX ^ Siner compression spring inside this pot part Io are pressed diametrically outwards into the driver grooves 9

Turning the upper part of the rotating cap using the handle is ^ JUj ₁ uniÄM threaded lid parti

fU43d £ i231 £ 70

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links 15 by adding to the flat card "B" taken away, and again "to / a predetermined Tightening torque screwed against a threaded connector, up to The reaction force emanating from the thread pressure is the force that overcomes the compression spring 6, and the coupling elements 15 counter to this compression spring force Disengage from their groove engagement 9, the inclined surfaces 15 'of the coupling elements being the outer edges of the driver grooves 9 latch like a ratchet, or in the opposite direction of rotation to loosen the Closing cover, the non-beveled edges of the coupling elements 15 are in turn opposite one another in parallel guidance the other edges of the driving grooves, whereby our threaded cover part 12 can be unscrewed again from its sealing seat.

Expectations

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Claims (5)

I k · r ι * * 'claims 1. Two-part screw cap for containers or as a pipe socket closure with coupling parts that are in mutual engagement and act like ratchets for automatic notching when a specified lid tightening torque is reached, thereby characterized in that mutually freely rotatably mounted between the two Cover parts to the outside au in the inner circumference of a cover part coupling parts are held, v 3lche provided with groove-like Auaparungen in the radial direction with under Compression spring action standing in the other cover part ratchet-like engaging, respectively. when achieved a predetermined torque tightening force cooperate for the screw cap part automatically disengaging coupling elements. 2. Screw cap according to claim 1, characterized in that as a coupling part a disc (4) with a central hole and over its circumference radially outwardly directed recesses (4 ") for groove-like engagement of diametrically opposite coupling elements (5) under compression spring force (6), in the edge circumference of the upper rotating cap part (1, I ¹ ) is held 3. screw cap according to claim 1, characterized in that as a coupling part a bridge part (14) inserted diametrically opposite in the upper rotating cap part (1,1) ± at, which with holes (4 *) through- engaging, on the lower Svhraubdeckelteil (2) attacking Dome glisden (5) radially after interacts externally under compression spring force (6) in grooves (4 *) latching 4, screw cap according to claim 1 or a? following, characterized in that a disk respectively. bridge-like coupling part (4j 14) with parts (11) protruding in a nose-like manner on the outer circumference, corrugation (1 ^BI ) of a lid edge (I ¹ ), which is known per se, engaging against rotation, is held securely. 5. Screw cap according to claim 1 or one of the following, characterized in that within a pot-like AuseparufiglabdQBaae distributed over their Tfcnfang _Ύ r. "\ Ch outwardly directed grooves (9) in the upper lisuischteil a screw cap part (12),> mter radial Peder pressure action standing coupling elements (15) directly embedded, engage with their parts protruding upwards in the axial direction towards the rotary cap part in a diametrically pushed-out handle part (8). 702332123.ItTO