JPS62146162A - Origin sealing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention relates to an original sealing device for a threaded mouth of a container, particularly a pin, which has adhesive properties for sealing the mouth. A screw cap made of material is provided with a ring surrounding the mouth in the closed 1F state via a tearing element, and stop elements are arranged on the mouth and the ring, these stop elements being able to be screwed. The present invention relates to an original sealing device that allows the ring to rotate relative to the mouth when tightening the screw, but prohibits this rotation when releasing the screw tightening.

[Prior art] At the applicant's company! ! According to a known original device of this type manufactured by A.
screwed into the part. The ring paste-frying element snaps into engagement with the mouth of the pin via a corresponding stop element.

The spring element of the ring is oriented obliquely backwards in the direction of screwing in and acts like a pawl, allowing screwing in, but unscrewing by grasping the rear of the stop element at the mouth. Prevents reverse rotation of the ring. Further counter-rotation of the cap causes the tearing element to be torn from the cap.

In this case, the ring remains on the mouth, which is not preferable. Therefore, in the closed state of the ring, it is not sufficiently clear that the cap has already been unscrewed. Furthermore, when emptying the container or the pin, there is a risk that the ring may fall off and fall, for example, into the filling liquid that is being poured out.

[Problem to be Solved by the Invention] It is an object of the invention to improve an original sealing device of the type mentioned at the outset in such a way that the ring is separated into separate parts when the cap is first opened. be. On the other hand, however, the ring should remain strongly integral so as not to be damaged during screw tightening.

[Means for solving the problem] This problem is solved by the configuration shown in the characteristic part of claim 1.

That is, the ring has at least one opening that engages at least one entraining portion of the screw cap.

The entraining portion of the cap that engages the opening in the ring according to this configuration should be of stable construction so as to break the ring, in which case the ring should not be made of a material that will tolerate tearing or breaking. It won't happen.

The ring breaks and falls out of the spout upon first opening, thus marking the opening clearly and preventing it from falling into the filling liquid upon dispensing.

According to claim 2, the ring can be provided with a break point that facilitates its breakage. This is particularly important if the ring and the entire cap are made of elastic synthetic resin, which is advantageous for the backing element and the elastic stop element.

According to claim 3, the intended rupture point is arranged in the vicinity of the opening for the entraining part.

The tensile action caused in the circumferential direction by the entraining part therefore acts directly on the intended rupture point.

According to claim 6, the opening surrounds the entraining part with play. This is especially important in the circumferential direction, as it ensures the effect that the driving part does not transmit any forces to the ring during screw tightening and therefore cannot destroy the ring. When unscrewing the cap, the stop element first acts and prevents rotation of the ring. A tearing element is then torn between the ring and the gap. Therefore, the entraining piece moves freely inside the opening and, after the circumferential play has disappeared, hits the ring and breaks it at a predetermined break point.

According to claim 7, the entraining part has a shape that makes it possible to easily produce the string by injection molding.

Next, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

[Example] Figure 4.5 shows the mouth l of the glass pin.

Mouth 1 is equipped with a thread for a 1M static cap.
The mouth 1 has four stop elements 3 of increased thickness in the form of cams below the thread 2, each tightening element 3 having:
a curved surface 5 with a slope extending radially outward in a clockwise direction and a stop surface 7 extending in the radial plane;
It is equipped with

In FIG. 1.2, the IO is a screw cap with a ring 12 to prove original sealing (already installed by the manufacturer). Cap 10 and ring 12 may be injection molded from polyethylene or polypropylene, for example. The cap 10 has a female thread 1
4, a backing ring 16 and an alignment protrusion 17 are provided.

Camp 10 is connected to ring 12 by four tearing elements 18. The tearing element 18 has approximately the shape of a truncated pyramid, the bottom surface of which is integral with the ring 12 and the top surface integral with the cap 10.

The ring 12 consists of two sectors (approximately half of a full circle), the left and right sides of which are connected to each other only by two thin connecting strips 20. As a result, a planned rupture point 21 is formed between the two fan-shaped portions. The sector comprises one ring outer fi 22 and one inner flange 24. By making the inner flange 24 of each sector section shorter than the outer shell 22 in the circumferential direction, one opening 26 is formed at the connection point of the two sector sections adjacent to the intended rupture point 21. be done. Each inner flange 24 has a downwardly projecting rib 27 at one end.

The cap mantle 28 is provided with in each case one entrainment part 30 in the form of an approximately axis-parallel extension at points facing each other, which entrainment part 30 also extends in the circumferential direction relative to the inner flange 24. Also in the radial direction with respect to the mantle 22, i
n is fitted. The role of the entrainment part 30 is the cap 10
The objective is to destroy the ring 12 when it is twisted in the direction of loosening it.

Seated on the ring shell 22 are four correcting elements 33 extending diagonally inward. These stop elements extend at an angle of approximately 45° to the radial plane and cooperate with the stop elements 3 of the mouth 1. The entire cap 10, including the ring 12 and the stop element 33, is made of a single elastic material.

[Operation] Next, the operation will be explained. When screwed into the mouth 1, the stop element 33 of the ring 12 enters the area of the stop element 3 of the mouth 1. The stop elements 33 perform a ratchet-like movement, moving outwards at the landing surface 5 and inwardly once over the respective stop element. The connecting strip 20 is dimensioned sufficiently large so that the ring 12 can withstand this load during screwing.

When unscrewing, the cap 10 is removed from the stop element 3
3 first rotates in the opposite direction until it hits the stop surface 7. This prevents further rotation of the ring 12. Further rotation of the cap IO causes the tear element 18 to tear.

Further rotation of the cap 10 causes the entraining portion 30 of the cap 10 to move circumferentially within the opening 26 of the ring 12 and abut against the rib 27 of the inner flange 24 . During this time, the ring 12 remains stationary. If the cap 10 is rotated further with the necessary force applied, the connecting strips 20 will break at the locations facing each other. ring 1
2 is then divided into two halves and each of these halves falls.

Various modifications may be made to the invention. The ring 12 may be divided into more than two sectors at the intended break point. For that purpose, I11!1 part 30
It is necessary to set the number of . The planned breakage location may have a shape other than that shown. For example, it is sufficient to embrittle the ring shell 22. Further, it is also possible to provide a larger number of expected rupture points than two, or to provide only I1y4 expected rupture points. The mouth 1 should have at least two stop elements 3 and the ring 12 should each have at least two stop elements 33. But ring 1
2 may have four or more first elements 33.

[Brief explanation of drawings]

FIG. 1 shows four screw caps with a ring according to the invention, the left half in axial section and the right half in side view; FIG. 2 shows the ring, tearing element,
A cross-sectional view showing the stop element and the entraining part, taken along the line II--II in FIG. 1; FIG. FIG. 4 is a radial cross-sectional view showing the opening of the container, and a side view showing only the upper left portion as an axial cross-section; FIG.
Δ is a partial, I-view of the mouth of the container according to FIG.
FIG. 6 is a detailed view seen in the direction of the arrow ■ in FIG. Explanation of the symbol - 1... Mouth part, 3.33... Stopping element. 10...Screw cap, 12...Ring. 26... Opening, 30... Entrainment part. Applicant Zener Plastake Kane. Grebner Land Co.

Claims (1)

Claims: 1) An original sealing device for a threaded mouth of a container, in particular a pin, comprising: a) a screw cap made of an elastic material for sealing said mouth; a ring that surrounds the opening via a tearing element in the state, b) allowing rotation of the ring relative to the opening when tightening the screw, but preventing this rotation when releasing the screw tightening; c) a stop element adapted to be arranged on the mouth and on the ring, c) the ring has at least one entraining part (30) of the screw cap (10); An original sealing device characterized in that it has one opening (26). 2) The original sealing device according to claim 1, characterized in that the ring has a planned breakage point (21). 3) The original sealing device according to claim 2, characterized in that the expected breakage point is arranged near the opening (26). 4) In order to form a planned breakage point, the ring (12) is divided into a plurality of fan-shaped parts, and connecting strips (20) are interposed between the fan-shaped parts, and the cross-sectional area of these connecting strips is equal to that of the ring ( 12) The original sealing device according to claim 2, characterized in that the cross-sectional area is smaller than that of item 12). 5) a) The ring has an outer shell (
b) a connecting strip (20) is interposed between the sectors; c) each sector has a generally radially extending inner flange (24); d) ) A patent characterized in that the circumferential length of the inner flange (24) is shorter than that of the outer shell (22) so that a plurality of openings (26) are formed between the inner flanges. The original sealing device according to claim 4. 6) Original sealing device according to claim 1, characterized in that each opening surrounds the associated entrained part (30) of the cap with a play that is present at least in the circumferential direction. 7) An original sealing device according to claim 1, characterized in that the entraining portion is formed as a substantially axial extension of the mantle of the cap.