EP1266370B1 - Security seal to be pulled through - Google Patents

Abstract

A pull-through security includes a base body and a tongue that protrudes therefrom and can be inserted through a pull-through opening that is arranged in a housing component connected to the base body. A restraint inset is arranged in the housing component. The tongue is provided with toes which protrude towards the outside in a rectangular-shaped manner when seen in the cross section. The toes engage with hooks in a toothed manner, whereby the hooks are arranged in the restraint inset. The housing component is provided with an outlet. The cross section of the outlet matches the cross section of the tongue having the toes. The form practically prevents the hooks from being manipulated by simple, flat tools. Influence or manipulation of the toothing between the toes and the hooks can practically be excluded.

Description

The present invention relates to a security seal according to the preamble of claim 1.

Security seals in which a band or strip provided with latching means is pushed through a receiving opening which is arranged at one end of the band or strip and prevented from being pulled out by means of retaining means mounted in the receiving opening, are for example out WO 95/27968 known. There, inter alia, a seal is shown, which has a flat body with a perpendicular to the surface piercing opening. A wrap body in the form of a flat tongue or flag is formed directly on the body perpendicular to the piercing direction wegführend. The end of this tongue can now be inserted in one direction in the penetration opening and pushed through. In this case, a loop is formed whose size, ie the diameter of which can be influenced by the extent of the penetration length. As the penetration length increases, this loop becomes smaller. Since the retaining means in the pierce hole prevent retraction of the tongue, the loop can only be separated by severing or tearing off the tongue.

Furthermore, such pull-through safety seals are also known, in which the tongue is formed from a side with a substantially round cross-section, which at regular intervals spherical or conical nubs, which can engage with arranged in the passage opening of the seal, resilient retaining means engage , Thus, a reliable locking of the tongue can be achieved in one direction and the loop accordingly the distances of the pimples in discrete intervals according to the needs reduced resp. be drawn.

The problem of such security seals is now to prevent manipulation of the locking function, i. To prevent that can be opened by invisible manipulation, the closure of closed seals and subsequently closed again.

Thus, in conventional safety seals with flat tongues have the disadvantage that with thin platelets after closing the seal from the insertion side, the retaining means can be blocked. This makes it possible to pull the tongues without visible damage from the penetration opening and thus to open the loop. Subsequently, the seal can again close as intended and a manipulation is not apparent.

In EP 0 676 736 A1 Such a security seal is disclosed with a base body and tongue projecting therefrom and a housing part with retention means for the tongue arranged on the base body and having a pull-through opening. The tongue has a flat, beam-shaped cross-section and has radially outwardly projecting tooth-shaped cams, wherein in each case four cams are arranged at the same position along the tongue.

Out FR 1 288 128 is a pull-through seal known with a base body and protruding tongue and arranged on the body, a pull-through having housing part with retaining means for the tongue. The tongue has a flat, beam-shaped cross-section and has radially outwardly projecting cams, wherein four cams are arranged at the same position along the tongue.

The same problem also occurs with pull-through seals whose tongues have a circular cross-section and also have a round cross-section having toothing elements. In addition, in such seals has the problem that with simple tools, such as a simple-to-produce, thin-walled sleeve in the right dimensions, from the outlet side of the puncture opening forth the locking mechanism also to block resp. out of function. Thus, the tongue can also, as already described above, pull out of the push-through opening and open the loop and then close unnoticeable again.

The mentioned tools for both known types of plugs can be produced by simple means without great effort due to their simple geometric structure.

The object of the present invention was to find a pull-through security seal of the type mentioned, which has a high security against manipulation during closure.

This object is achieved according to the invention with a pull-through security seal with the features of claim 1. Preferred embodiments will be apparent from the dependent claims 2 to 11.

The fact that the tongue does not have a geometrically simple cross-section, but has an edge cross-sectional shape, a high degree of manipulation security is achieved. By this form, the production of a suitably trained and effective manipulation tool is much more difficult and virtually impossible without special machine tools and a high effort with great expertise.

Nevertheless, the embodiment according to the invention, like the round cross-section of the tongues of conventional pull-through seals, can absorb large tractive forces via the multiple toothing.

In order to simplify the threading of the tongue into the pull-through opening of the base body, guide elements are preferably arranged in the region of the tongue tip in front of the tooth-like cams, which guide the tongue.

The number of cylindrically arranged in cross section cam can basically depending on the application and size the seals resp. the dimension of the tongue can be chosen differently. It has been found that, on the one hand, the symmetrical arrangement of four cams in cross-form is proven both in production and in operation.

The preferred shaping of the cams in the form of rectangular triangles with a flattened tip can of course also be adapted to the retaining means and modified accordingly.

Thus, the pull-through seal can be removed after use again in a simple manner without the aid of tools, it is preferably provided that the tongue is guided from the front side of an edge of the body of the seal along and connected to this via webs. These webs serve as a predetermined breaking point and thus allow easy tearing of the sealed seal.

Preferably, the base body-side end of the tongue is not guided to the rear end of the base body, but ends at a formed at this point flag of the body. Thus, the seal, which are usually made of a plastic, easily in metering tools in large quantities produced by the meter, the seals advantageously only respectively via webs which only directly with the body resp. the flag are connected, connect. These webs are now also designed as predetermined breaking points, so that the individual seals can be easily separated from the meter goods. These connecting webs are dimensioned such that the lower tear force resp. Have breaking strength, as the predetermined breaking points between the tongue and the body. This prevents that when separating the seals are mistakenly destroyed by a tearing of the tongue.

The outlet opening of the retaining means containing housing part is designed according to the cross-section of the tongue, so that at this point no conventional, simply designed tubular manipulation means can be introduced to the teeth between the tongue resp. to prevent the cam and the retaining means.

The inlet opening likewise preferably has guide ribs formed in accordance with the cross-sectional shape of the tongue, which are arranged parallel to the pull-through direction in the interior of the housing part, preferably in front of the retaining means themselves.

• Fig. 1 die Aufsicht auf eine erfindungsgemässe Durchzieh-Sicherheitsplombe;
• Fig. 2 den schematischen Längsschnitt durch die Durchzieh-Sicherheitsplombe von Figur 1;
• Fig. 3 die Frontansicht einer erfindungsgemäss ausgebildeten Zunge mit jeweils vier zahnförmigen Nocken;
• Fig. 4 die Frontansicht einer alternativen Ausführung einer erfindungsgemässen Zunge mit jeweils drei zahnförmigen Nocken;
• Fig. 5 schematisch den Längsschnitt durch das im Grundkörper angeordnete Rückhaltemittel;
• Fig. 6 schematisch die Ansicht einer Zungenspitze mit zusätzlichen Führungselementen;
• Fig. 7 schematisch die Ansicht einer weiteren Zungenspitze mit ringförmigen Wulsten; und
• Fig. 8 die Ansicht eines erfindungsgemässen Satzes von Durchzieh-Sicherheitsplomben.

Embodiments of the present invention will be explained below with reference to drawings. Show it

• Fig. 1 the supervision of an inventive pull-through security seal;
• Fig. 2 the schematic longitudinal section through the pull-through security seal of FIG. 1 ;
• Fig. 3 the front view of a tongue formed according to the invention, each with four tooth-shaped cam;
• Fig. 4 the front view of an alternative embodiment of an inventive tongue, each with three tooth-shaped cam;
• Fig. 5 schematically shows the longitudinal section through the arranged in the main body retaining means;
• Fig. 6 schematically the view of a tongue tip with additional guide elements;
• Fig. 7 schematically the view of another tongue tip with annular beads; and
• Fig. 8 the view of a novel set of pull-through security seals.

FIG. 1 shows the schematic plan view of an inventively designed pull-through security seal with a flat, substantially rectangular base body 1 and projecting therefrom tongue 2. On the base body 1, a cone-shaped housing part 3 is formed, in the interior of the retaining means 4 are arranged.

These retaining means 4 are constructed in a conventionally known manner with radially resilient hooks 5, which engage in the tooth-like cam 6 of the tongue 2 when it is inserted through the pull-through opening 7 of the housing part 3. This is based on the schematic representation of the longitudinal section of this seal FIG. 2 out.

The retaining means 4 are firmly and permanently connected, for example by a weld with the base body 2.

The tongue has, for example, a round base cross-section and has cams 6 arranged successively on one or possibly several sections along its longitudinal axis. These cams 6 are preferably designed as triangles projecting radially outward from the tongue body with flat side cheeks 6 'and a flattened tip.

FIG. 3 shows a preferred cross-sectional shape of the tongue 2 with four cam rows 6 in the front view. The cams 6 essentially have a rectangular cross-section, ie the side cheeks 6 'are designed to extend flat along the longitudinal axis of the tongue 2. The cams 6 are cross-shaped in cross section and are preferably each arranged directly successively on the tongue 2.

FIG. 4 shows a further, alternative cross-sectional shape of a tongue 2 according to the invention, in which the rows of cams 6 are arranged triangular in cross section. This arrangement can either symmetrical with equal intervals resp. Angles to each other or as in the FIG. 4 be formed irregularly formed.

A manipulation tool would now have to be manufactured as an extremely thin-walled sleeve with the corresponding cross-section in order, if necessary, the retaining means 4 resp. to be able to influence the hooks 5. This can be done very easily in conventional pull-through seals with completely symmetrical, circular cross-section or simple, flat cross-sections, the illustrated cross-sectional shapes, however, if anything, produce only with great effort, whereby the risk of manipulation can be largely avoided.

FIG. 5 now shows schematically the longitudinal section through the housing part 3 of the base body 1 with inserted and welded retaining means 4. The radially resiliently arranged hooks 5 are spread when inserting the tongue 2 in the pull-through 7 in the direction of arrow through the oblique nasal edges of the cam 6 and rest against the perpendicular to the direction of pulling back edges the cam 6 when the tongue is retracted. By this known retaining structure is effectively avoided that the tongue 2 can be pulled out again against the pull-through direction of the housing part 3 of the body 1. The outlet opening 8 of the housing part 3 now advantageously also has a corresponding cross-sectional shape of the tongue 2, as in the FIGS. 3 and 4 shown. This prevents a manipulation attempt from the outlet opening 8 forth with only simple tools virtually completely.

In the region of the pull-through opening 7, guide ribs 9 arranged preferably parallel to the pull-through direction are formed in the interior of the retaining means 4. These guide ribs 9 again give an approximately the cross-sectional shape of the tongue 2 corresponding open cross-section and rotate in particular the tongue 2 in the corresponding correct position that the cams 6 each centrally with the corresponding hooks 5 come into contact and thus a reliable locking of the tongue 2 with allow the body 1.

In order to further simplify the insertion of the tongue 2, guide elements 10 are preferably formed in the region of the tip of the tongue, advantageously directly in front of the foremost cams 6, as shown in FIG FIG. 6 is shown. These guide elements 10 have, for example, a substantially rectangular basic shape with wedge-shaped, straight front edge 10 '. Advantageously, the cross section of these guide elements 10 corresponds to the cross section of the corresponding cams 6 and the guide elements 10 are arranged in alignment with the respective row of cams on the tongue 2.

The tongue tip before the cam rows resp. The guide elements 10 may further be a number of circular Have beads 11. These beads 11 have a smaller diameter compared to the diameter of the cams 6, as is apparent FIG. 7 is apparent.

In FIG. 8 Finally, a set of pull-through seals is shown, as this is usually produced by the meter. The tongue 2 is as already in FIG. 1 4, the rear end 2 'leads along the front edge 1' a little way along the side edge 1 "to the rear, and immediately behind the end 2 'of the tongue 2 is a lug 12 formed in the base body 1, whose side edge 12 'is formed at a distance at least at the height of the extended outer edge of the tongue end 2'.

The tongue 2 resp. the tongue end 2 'is preferably connected to the main body 1 via the two webs 13. These webs 13 are advantageously used as predetermined breaking points, over which the tongue 2 can be easily demolished after use of the main body 1, without the need for special tools or cutting devices would be necessary.

The individual pull-through seals themselves are now preferably also connected to one another via webs 14 by the meter, these webs being formed directly between the side edges and lugs 12 of adjacent pull-through seals directly during the injection process. These webs 14 are now advantageously dimensioned such that they serve as predetermined breaking points for separating the pull-through seals. At the same time, the strength of these webs 14 is dimensioned such that the tear force resp. Breaking load is less than for the webs 13 between the base body 1 and tongue 2. This can be advantageously prevented that instead of Detaching individual pull-through seals from the sold by the meter unintentionally tears off the tongues 2 from the main body 1 and thus destroys the seals prior to use.

Claims (10)

1. Security seal to be pulled through with a basic body (1) and thereof protruding tongue (2) and a housing part (3) arranged on the basic body (1) having an opening to be pulled through (7) and with retention means (4;5) for the tongue (2), the tongue (2) having at least along at least one section teeth-shaped cams (6) protruding outwards in radial manner, whereas at least three cams (6) are each arranged at the same position along the tongue (2) and forming edged grooves in the cross-section, characterized in that the tongue (2) has a round basic cross-section.
2. Security seal to be pulled through according to claim 1, characterized in that the cams (6) are arranged along one single section of the tongue (2) in uninterrupted manner.
3. Security seal to be pulled through according to one of the claims 1 to 2, characterized in that each of four cams (6) are arranged symmetrically to the longitudinal axis of the tongue (2) at the same position and the cams (6) lying each one after another along the longitudinal axis of the tongue (2) are arranged in a straight row.
4. Security seal to be pulled through according to claim 3, characterized in that the cams (6) are formed in form of a slim, rectangular triangle with flattened point and have flat side cheeks (6') at constant wall thickness.
5. Security seal to be pulled through according to one of the claims 1 to 4, characterized in that wedge-shaped guiding elements (10) are formed in front of the first section with the cams (6), which preferably have the same thickness and height like the cams (6) and each are arranged in the same row in parallel manner to the longitudinal axis of the tongue (2) like the cams (6) are aligned.
6. Security seal to be pulled through according to one of the claims 1 to 5, characterized in that the point of the tongue is provided with several bulges (11), preferably regularly spaced to each other, whose outer diameter is lesser than the outer diameter of the section or the sections, respectively, of the tongue (2) provided with the cams (6).
7. Security seal to be pulled through according to one of the claims 1 to 6, characterized in that guiding ribs (9) are formed in the area of the entering opening of the opening to be pushed through (7) of the housing part (3) inwards in radial manner.
8. Security seal to be pulled through according to claim 7, characterized in that the guiding ribs (9) are formed rounded at its side facing the entering opening (7).
9. Security seal to be pulled through according to one of the claims 1 to 8, characterized in that the tongue (2) is arranged recumbent in the plane of the basic body (1) around the front (1') of the basic body (1) along the respective lateral edge (1") and is connected to this via at least two connecting bars (13), the end of the tongue (2') not being entirely conducted till the rear edge of the basic body (1), and that subsequent at that a lateral protruding rim (12) is formed lying in the plane of the basic body, whose lateral edge (12') reaches to the continued outer contour of the section (2') of the tongue (2) connected to the basic body (1).
10. Set of security seals to be pulled through according to claim 9, characterized in that the individual basic bodies (1) are connected to each other each via at least one bar (14), which runs from the lateral edge (12') of the rim (12) of a basic body (1) to the lateral edge of the subsequent basic body (1), the strength of the bar (14) being measured such that it serves as predetermined breaking point and has a lower breaking strength or tear strength, respectively, than the rest of the connections (13) of the individual security seals to be pulled through.

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