KR20120042741A - Metal cover with stiffening moldings for a container body - Google Patents

Abstract

The present invention relates to a metal cover (1) for a container body, in particular a metal cover for a container of a metal can type, which cover (1) forms a central hermetic panel, defined by a break start line (3), Traction force is applied to break the breaking start line 3 along the total traction line 9 defined on the center panel 4 between the zones 3 c ) and the original position 3 b 2). 4) a central portion 4 which is provided with a gripping member 6 for application on it.
The central panel 4 of the present invention is also formed by molding sections 10 a , 10 b , arranged one or more of which is arranged to enhance bending resistance along at least the lines across the total traction line 9. It includes the above inner moldings (10).
At least two of the inner molding sections 10b are each provided on one side of the total traction line 9 and diverge from each other and from the total traction line 9 to exert a so-called saddle or tile effect. Is extended to.

Description

Metal Cover with Stiffening Moldings for a Container Body}

The present invention relates to metal covers for containers, in particular metal cans. This is more particularly of the type comprising a central pad equipped with at least one reinforcing mold and equipped with a "pulling-ring" holding member and a peripheral annular element connected via a breakage starting line. It is about a cover.

Certain metal containers, primarily cans for food packages, have a "easy" opening system to avoid using can-opener type tools.

A particularly valuable solution is a one-piece comprising a central panel, often equipped with a gripping and pulling member, called a "pull-ring" and a one-piece element comprising a peripheral annular element connected via a gripping start line. (one piece) consists of a cover.

  A gripping member of this type typically comprises two parts over its length: a peripheral part supporting a "nose" attached to the center panel of the cover proximate the break start line, and-hand to open. An inner part that forms a gripping loop that is flattened against the upper surface of the central panel joined before handling.

To open the container, the user grasps the free portion of the loop of the gripping member and then separates the gripping member from the joined central panel. The gripping member then forms a kind of lever that is rotated by the user at the peripheral end in the shape of a bearing nose, which causes the break start line to break. It is sufficient for the user to make an appropriate pull to continue the opening motion at the break start line and to separate the center panel from the joined peripheral elements.

Indeed, during the opening operation, the center panel usually maintains folding along a line arranged transversely to the normal traction line (in other words, the tearing portion of the panel tends to bend back towards the un teared portion yet). These phenomena have the effect of reducing the efficiency of the traction energy, thus increasing the effort required by the consumer to tear off the break.

In order to limit this problem, it is currently a trend to make reinforcing molds in a central panel designed to improve the resistance of this panel to this undesirable fold or bend phenomenon. The traction energy exerted by the consumer to open the cover is thus reduced.

In practice, however, all reinforcement molds are not as effective as each other to optimize the traction energy used by the consumer.

For this reason, the applicant has developed a new lid structure with a pull-ring designed to optimize and reduce the traction energy required for opening.

The metal cover according to the invention comprises (i) a peripheral portion for assembling it to the container body and (ii) a central portion which forms a central hermetic panel confined to and connected to the peripheral portion by a break initiation line, the central portion Is equipped with a gripping member consisting of two parts on one side through which the longitudinal axis of symmetry passes: a first part attached to said central part and a second part of the gripping member; The gripping member makes it possible to pull the breaking start line on the center panel from a proximal region adjacent to the gripping member to a distal region at an opposite end to the gripping member; It is designed to run at least approximately in length while facing a general traction line defined on the central panel between the near and in-situ zones during this towing; The central panel also includes one or more inner moldings formed into sections, arranged to reinforce resistance to bending along at least a line transverse to the general traction line, wherein at least two of the inner moldings each represent one of the general traction lines It is arranged on the side.

According to the invention, the lid is characterized in that the inner molding sections form two side molding parts, each arranged on one side of the general traction line, each side molding portion being (i) on the side of the general traction line. An inner molding side, and an outer molding section extending in a space separating the inner breaking line from the inner section; The inner and / or outer sections of the two molding portions extend in a divergent manner (advantageously over at least part of their length) with respect to the general traction line and or with respect to one another. To form.

The value of this covering structure is that it reduces the phenomenon of lateral folding (or bending) and therefore reduces the traction energy required for opening. This point arises in particular from the creation of a "saddle" or "tile" effect, ie the curvature of the panels arranged transversely with respect to the general line of towing on the gripping member.

Other features that can be obtained in combination or independently of one another are specified below:

The inner sections of the two side molding parts extend in a divergent manner (advantageously over at least their length) and the outer sides of the two side molding parts diverge with respect to the total traction line and also with respect to each other. In a method (advantageously extending over at least a portion of their length, wherein the inner and outer sections of the two side molding portions form diverging molding sections;

The inner and / or outer sections of the two side molding parts extend in a way (advantageously over at least a portion thereof) with respect to the total traction line and also with respect to each other in the original position area of the break start line;

The diverging molding sections extend in a straight line or at least substantially straight over at least a portion of their length;

The diverging molding section extends symmetrically, or at least substantially symmetrically with respect to the total traction line;

The inner sections of the two side molding parts are advantageously connected to an adjacent first end via a first junction section extending from the total traction line, each two sections of the side molding part being a total traction line Connected via a second joining section at a second end located apart from and near the break start line;

Two molding sections of one and the same side molding part advantageously diverge against each other from the end proximal to said total traction line from their total traction line towards their ends in their original position;

The total traction line consists of at least two parts: (i) a near position portion on the side of the region of the near position of the break start line, oriented coaxially or substantially coaxially with the longitudinal axis of the gripping member, and (ii) an original location portion on the side of the original location zone of the failure start line and arranged coaxially or at least substantially coaxially with the intermediate axis of the central panel passing through the original location zone; In this case, the diverging molding section is arranged on the original position portion of the total traction line; Still in this case, at least two different molding sections are each advantageously arranged on the side of the proximal position of the total traction line, which proximate and extend along a portion of the break start line; In the case of the inner molding with two side parts, the near position molding sections are each connected to the first end of one outer section of the side molding part, respectively;

The two diverging molding sections are separated in the direction of the total near-to-one pull line; In this case, the central panel has a generally non-circular shape, bounded by the break start line, advantageously comprising two longitudinal sections connected by two transverse sections; A gripping member is attached to the corner of the breaking start line corresponding to the engagement between the first transverse section and the first longitudinal section of the breaking start line to form a near position breaking zone, and the two diverging molding sections are connected to the total traction line. Apart toward the second transverse section to form an in situ break zone;

Alternatively, the two diverging molding sections can be separated in a direction opposite to the direction of the total traction line (ie they diverge in the direction from the original position to the near position);

The central panel also includes a molding section called a “peripheral” section extending along and close to at least a portion of the length of the breaking start line such that the distance between the peripheral molding section and the breaking start line is between 0.5 and 5 mm;

The inner and peripheral molding sections of the central panel are connected together to form a single continuous molding together;

An inner molding section, and optionally a peripheral molding section, is positioned on a line extending transverse to the longitudinal axis of the gripping member to facilitate folding of the central panel in the transverse line during the lifting operation of the gripping member. A proximal location end.

The invention is also illustrated without being limited in any way by the following description in connection with the accompanying drawings. From here,
1 is a plan view of a lid in which the central panel comprises a continuous reinforcement molding according to the invention;
2 is a cross-sectional view along plane II-II of the lid of FIG. 1.

As shown in FIG. 1, the lid 1 is designed to engage the upper edge of a metal container body (not shown).

This container body usually consists of a bottom element coupled with the lower edge of the waistband (circular, square, rectangular, etc. cross section) of the side wall.

The connection between the lid 1 and the container body is usually made by a crimping technique.

The lid 1 is usually composed of a part 2 which forms a peripheral annular element which is joined by a part 4 which forms a central removable closure panel by means of the break start line 3.

It is advantageously made of a single part by stamping techniques based on sheets made of metals such as aluminum, steel, etc.

The lid 1 has a generally non-circular shape, in this case a rectangular shape when viewed from the top.

Therefore, the annular element 2 is rectangular. It is suitable that the lid 1 is also crimped to the container side wall of the rectangular section (as shown above, this general shape may be different).

The break start line 3 (also called "break line" hereafter) is generally rectangular when viewed from the top (Fig. 1). It comprises two longitudinal sections 3a1 and 3a2 connected by two transverse sections 3b1 and 3b2.

This break line 3 is made by thinning of the metal which is achieved by the use of a suitable tool when the cover is made.

The break line 3 was in this case closed / completely (which extends over the entire periphery of the closure panel 4); In the alternative, it may be partial.

On the other hand, the central closure panel 4 is also generally rectangular in shape with a longitudinal axis of symmetry 4 '.

The panel 4 is designed to fit snugly with the gripping member 6 at its upper surface, and the manipulation of the gripping member allows the user to easily open the lid 1 (ie the break line 3). By means of total or partial separation of the central panel 4 from the surrounding annular element 2).

The towing ring 6 is shown in dashed lines in FIG. 1, only in an indicative and graphical manner.

In this case, it is attached to the corner of the break line 3 formed by the coupling between the first transverse section 3b1 and the first longitudinal section 3a1 of the break line 3; This corner of the break line 3 corresponds to the break zone 3c called the near position or upward zone.

The ring 6 comprises two parts arranged along a line bisecting the proximal location region 3c and along an axis of symmetry 6 'arranged coaxially:

A peripheral portion 7 attached to the panel 4 in proximity to the break line 3 comprising the nose (not shown), and

An inner part 8 forming a gripping loop which is pressed against the upper face of the center panel 4.

Indeed, this annular element 6 is in the original or downward zone located on the side facing the ring 6 from the aforementioned near or upward zone 3c (adjacent to the gripping member 6). This allows the user to pull from the center panel 4 in order to break the breaking start line 3. In this case, this original position zone corresponds to the second transverse direction 3b2 of the break line 3 located opposite to the aforementioned first transverse section 3b1.

During this towing operation, the ring 6 proceeds at least approximately in length, towards the total traction line 9 defined in the central panel between the near position region 3c and the original position region 3b2.

This total traction line 9 is shown in dashed lines in FIG. 1. It consists of two parts, usually rectangular in this case:

A near-position portion 9a located on the side of the near-position region 3c of the breaking start line 3 and coaxially or at least substantially coaxial with the longitudinal axis 6 'of the gripping member 6, and

-Coaxially or at least substantially coaxial with the central axis 4 'of the central panel 4, which is located on the side of the in situ region 3b2 of the break line 3 and passes through the in situ region 3b2 In-place portion 9b (this central axis 4 'extends between and parallel to two longitudinal sections 3a of break line 3).

In this case the two parts 9a and 9b of the traction line 9 are angled with respect to each other because of the position of the ring 6 in the angle of the break line 3. These are connected by a joining portion 9c of the general shape of the arc of the circle: the ring normally passes gradually from the near position portion 3a to the original position portion 3b.

The center panel 4 also comprises molding or stamping as hollows (or otherwise bosses) suitable for reinforcing the center panel 4 in this case.

In the present case, the center panel 4 is called a "center" or "inner" molding, surrounded by a second molding 11 called "periphery" extending along and near the length of the break line 3. And a first molding 10.

These "inner" moldings 10 and "peripheral" moldings 11 are here continuous; They may also be discontinuous with respect to each other and / or by themselves.

These moldings are limited by a simple molding section (only change in height); They may also be defined, for example, by double molding sections forming hollow or hollow single ribs.

According to the invention, at least a part of the molding section defining the central molding 10 is arranged to create a “saddle” or “tile” in the central panel 4 when opened (ie total towing). Bend of the panel 4 transverse to the line 9 or in other words the bend starting from two longitudinal sections 3a of the breaking line 3 with a high point on the central axis 4 ′.

To this end and as will be explained below, at least two of the sections of the inner molding 10 are each arranged on one side of the total traction line 9, respectively, in relation to the traction line 9 and also to each other. Extend in a divergent manner.

More precisely, the inner molding 10 is a "must position" or "upward" 10a extending on and above either side of the near position portion 9a and the original position portion 9b of the pull line 9, respectively. Moldings called and other ones called "home position" or "downward" 10b.

The in situ section 10b of the inner molding 10 is generally a lug-shaped or U-shaped, each arranged on one side of the in situ portion 9b of the total traction line 99.

These side molding portions 13 are each (i) a space separating the inner molding section 10b1 on the side of the total traction line 9, (ii) the inner section 10b1 and the breaking start line 3 facing it. Outer molding section 10b2 extending at, and (iii) two molding sections 10b1 and 10b2 located away from the total traction line 9 and proximate to the in situ region 3b2 of the break initiation line 3. And a coupling section 10b3 connecting them at their downward ends.

In this case, they are the inner section 10b1 and also the outer section 10b2 which form a diverging molding section that can produce the saddle tile tile effect that is desired.

These inner sections 10b1 and outer sections 10b2 extend symmetrically or at least substantially symmetrically with respect to the total traction line 9 and in particular from its original position portion 9b.

They face and extend virtually the total length of this original positional portion 9 b , thus here over about half of the length of the panel 4.

The inner sections 10 b 1 extend in a straight line or at least substantially straight.

The inner sections are close to the total traction line 9 by means of a joining section 10 b 4 (in the general shape of the arc of the circle) extending from the total traction line 9 and through the total traction line 9. Are connected together at the upstream end of the sections.

These inner sections 10 b 1 therefore, together in the direction of the in-situ break zone 3 b 2, together form a kind of V, the axis of symmetry of the inner sections being the central axis 4 ′ of the panel 4. Corresponds to).

These inner sections 10 b 1 diverge in an upstream-to-downstream direction (ie in the direction of the in-situ break zone. 3 b 2).

The inner sections 10 b 2 consist of two parts that extend in a straight line or at least substantially straight:-opposite the upstream portion 10b2 'which diverges with respect to the traction line 9-the longitudinal breaking section 3 a 1 A downstream portion 10 b 2 ″ that is parallel to or at least substantially parallel to.

The upstream portions 10 b 2 ′ also diverge with respect to one another (ie in the direction of the in situ breaking zone 3 b 2) in an upstream-to-downstream direction.

Similarly, two molding segments 10 b 1 and 10 b 2 of one and the same side molding part 13 (particularly in the upstream part 10 b 2 ′) upstream close to the total traction line 9 relative to each other. the divergence in (at the downstream side of the home position (9 b)) from the end (the home position portion (9 b of the upstream side of)) total tow line to the downstream end in the original position from the (9).

This unique structure also enhances the desired tile or saddle effect.

In addition, as also shown in FIG. 1, the proximal molding sections 10 a also have their proximal portions 9 a and engaging portions 9 c respectively on one side of the total traction line, respectively. Arranged in.

The function of these sections 10 a is to reinforce the panel 4 to optimize the onset of tearing of the break line 3.

Two of these near position molding sections 10 a 1 extend close to and along a portion of the break start line 3. These have the same or similar shape as the part of both breaking start lines 3.

For example, one of the sections 10 a 1 ′ (right side of FIG. 1, opposite the portion of the first longitudinal breaking section 3 a 1) has a simple straight shape and the other (left side of FIG. 1, Facing the part of the first transverse section 3 b 1 and the second longitudinal breaking section 3 a 2 as a whole are L-shaped.

These two proximal molding sections 10 a 1 are connected in this example to the upstream end of the outer section 10 b 2 of one of the side molding parts 13 via a curved coupling with each other.

This combination is, in this example, or as an at least substantially straight in the molding section of the straight line (10 a 2), is made by a molding section (10 a 2) which converge with respect to each other in the direction of the home position in a near position value.

These converging sections 10 a 2 are used in particular to reinforce the divergence of the sections 10 b 1 and 10 b 2 of the lateral positional portions 13.

In addition, and as described above, the central panel 4 also consists of peripheral molding sections 11 extending along the break line 3.

As an indication, the width separating the peripheral molding sections 11 and the breaking start line 3 is preferably between 0.5 and 5 mm 2.

These peripheral molding sections 11 are connected to an upstream end of the near position inner sections 10 a together to form a single continuous molding.

The two connections 14 (at the proximal ends) between the inner sections 10 and the peripheral sections 11 are located on either side of the traction line 9 at a distance from each other; Both connectors also lie outside the space requirement of the ring 6 and away from the near location break zone 3 c .

These two connections 14 are connected to the longitudinal axis 6 ′ of the gripping member 6 to increase the folding of the central panel 4 in the lateral line 15 during the operation of lifting the gripping member 6. It is located on the line 15 extending laterally.

1 also shows the zone of circular molding 16 located between the near position molding sections 10 a and on the traveling axis 9 of the ring 6.

This molding 16 is also located in the loop 8 of the ring 6 to facilitate gripping when the consumer opens the can.

In practice, the lid is opened in a conventional manner by pulling on the dedicated ring 6 in the near-in-situ direction.

During this pull operation, the ring 6 moves substantially along the total traction line 9 as described in detail above.

These two side molding parts 13 will exert the desired saddle or tile effect in the original position part 9 b of this traction line 9.

With regard to the tearing of the break line, the efficiency of the traction energy is particularly improved for a cover with moldings in which the sections extend parallel to the traction line.

According to a variant (not shown), the ring 6 may be arranged with the transverse section 3 b 1 of the break in the middle or at least substantially in the middle. The ring 6 is thus oriented such that its axis 6 ′ is coaxial with the central axis 4 ′ of the panel 4.

In this case, the moving line 9 of the ring 6 is straight or at least virtually straight. And, the internal reinforcement mold 10 can be formed by two side portions 13 that virtually extend over the total length of the panel 4 to obtain an optimum "saddle" effect.

Claims (13)

Metal cover for container body, especially metal cover for container of metal can type,
The lid 1 forms (i) a peripheral portion 2 and a central closure panel for assembling the lid to the container body, and (ii) Consists of a central portion (4) defined by the break start line (3) and connected to the peripheral portion (2),
The center panel 4 has, on one of its surfaces, a gripping member 6 consisting of two parts through which the longitudinal axis 6 'of symmetry passes, one of which is one of the centers. The first part 7 and the other attached to the panel 4 are the second part 8 for proper gripping,
The gripping member 6 breaks the breaking start line 3 from the near position region 3 c adjacent to the gripping member 6 to the original position region 3 b 2 at the opposite end of the gripping member 6. To make it easier to pull on the center panel 4,
The gripping member 6 proceeds at least approximately over the length during this pull and is defined by the total traction line defined on the center panel 4 between the near position region 3 c and the win position region 3 b 2. Face to face (9),
The center panel 4 is formed of one or more inner moldings 10 consisting of molding sections 10 a , 10 b , arranged to enhance bending resistance along the lines across the total traction line 9. In a metal cover for a container body, wherein at least two of the inner molding sections 10 b 1, 10 b 2 are each arranged on one side of the total traction line 9.
The inner molding sections 10b form two side molding portions 13 arranged on one side of the total traction line 9, respectively, and the side molding portions 13 each of the total traction line 9. (Ii) an outer molding section 10 b extending to one side (i) an inner molding section 10 b 1 and the inner section 10 b 1 and a space separating the opposing break start line 3. 2), wherein the inner sections 10 b 1 and / or outer sections 10 b 2 of the two side molding parts 13 diverge, with respect to the total traction line 9 and to each other. Extending in a manner to form diverging molding sections. 2. The inner sections 10 b 1 of the two side molding parts 13 extend in a divergent manner with respect to the total traction line 9 and with respect to each other, and furthermore The outer sections 10 b 2 of 13 extend in a diverging manner with respect to the total traction line 9 and with respect to each other, and with the inner sections 10 b 1 and outer sections of the two side moldings 13. The cover (10 b 2), characterized in that it forms diverging molding sections. 3. The inner sections 10 b 1 and outer sections 10 b 2 of the two side moldings 13 are according to claim 1 and also relative to each other. A cover, characterized in that it extends toward the original position zone (3 b 2) of the breaking start line (3) in a diverging manner. 4. The total traction line 9 according to claim 1, wherein the inner sections 10 b 1 of the two side moldings 13 are at a first end close to the total traction line 9. Is connected via first coupling sections 10 b 4 extending on), and furthermore, each of the two sections 10 b 1, 10 b 2 of the side molding portions 13 is connected to a second coupling section. A cover, which is connected via a rod (10 b 3) to a second end which is at a position away from the total traction line (9) and close to the break start line (3). 5. The two molding sections 10 b 1, 10 b 2 of one and the same side molding part 13 are close to the total traction line 9 with respect to each other. A cover, characterized in that at their ends diverges to their ends away from the total traction line 9. 6. The diverging molding sections 10 b 1, 10 b 2 extend in a straight line or at least substantially straight line over at least a portion of their length. 7. cover. 7. The diverging molding sections 10 b 1, 10 b 2 extend in a symmetrical or at least substantially symmetrical manner with respect to the total traction line 9. 7. Featured cover. The method according to any one of the preceding claims, made of a total tow line (9) comprises at least two portions positioned near portion (9 a) and the home position value part (9 b),
- near the location value part (9 a) is the side where the near zone (3 c) of the rupture start line (3) is oriented in the longitudinal axis (6 ') and coaxial with, or at least substantially coaxially of the grip member, and
The original positional part 9 b is on the side of the win position 3 c 2 of the straight line 3, the central axis 4 ′ of the central panel 4 passing through the win position 3 c 2; ) Is coaxially or at least substantially coaxially with
The diverging molding sections (10 b 1, 10 b 2) are arranged in the original position portion (9 b ) of the total traction line (9). 10. The method according to claim 8, wherein at least two different molding sections 10 a are each arranged on the proximal portion 9 a side of the total traction line 9, with the proximal molding sections 9 a being the break start line. A cover, characterized in that it is close to and extends along a portion of (3). 10. The lid according to claim 1, wherein the near position molding sections 10 a are each connected to the first end of the outer section 10 b 2 of one of the side molding parts 13. . The divergent molding sections 10 b 1, 10 b 2 are separated in the direction of their original position at the proximal position of the total traction line 9. cover. 12. The center panel 4 according to claim 11 is of a generally non-circular shape, defined by a break start line 3 consisting of two longitudinal sections 3 a connected by two transverse sections 3 b . The gripping member 6 has a first transverse section 3 b 1 and a first type sections 3 a 1 of the breaking start line 3, in order to form its near position breaking zone 3 c . Is attached to the corner of the break start line (3) corresponding to the coupling between,
In addition, the two diverging molding sections 10 b 1, 10 b 2 leave the total traction line 9 and form a second transverse section 3 b 2 of the breaking start line 3 which forms an in situ distal zone. The cover, characterized in that to be separated while performing toward). 13. The central panel (4) according to any one of the preceding claims, wherein the central panel (4) consists of molding sections (11) extending along and at least close to a portion of the length of the break start line (3). A lid characterized in that the inner molding sections (10) and the peripheral molding sections (11) of the center panel (4) are connected to each other to form a single continuous molding together.

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