CN101715415A

CN101715415A - Container in the form of a sheet-metal can with sheet-metal lid

Info

Publication number: CN101715415A
Application number: CN200880019344A
Authority: CN
Inventors: 理查德·约翰逊; 托马斯·亚尔马松
Original assignee: EMBALLATOR ULRICEHAMNS BLECK AB
Current assignee: EMBALLATOR ULRICEHAMNS BLECK AB
Priority date: 2007-06-20
Filing date: 2008-06-18
Publication date: 2010-05-26
Anticipated expiration: 2028-06-18
Also published as: WO2008156420A1; SE0701528L; EP2155578B1; HK1143788A1; EP2155578A4; PL2155578T3; SE531312C2; RU2010101669A; EP2155578A1; CN101715415B; RU2465184C2

Abstract

A container in the form of a sheet-metal can with removable sheet-metal lid for the closure and exposure of a storage space for a goods item. The lid is secured against accidental opening by means of an elastic plastics locking ring (24), which is constructed as an annularly closed profile having a substantially U-shaped portion forming a downwardly open annular channel that encloses the circumferential edge portion of the lid and the opening edge portion of the can and secures the lid and with an annular bead (29) engages below a radially projecting portion (12) of the opening edge portion (6) of the can. The locking ring (24) has a weakening point (34), which can be broken open for opening of the container when the weakening point (34) is exposed to breaking forces exceeding a fixed maximum load in the handling of the container, and the locking ring has a point of engagement (37), situated in the proximity of the weakening point, for a breaking tool (38) so as to be able with a rocking motion to break open the locking ring at the weakening point, which normally is not visible to the eye. The point of engagement (37) for a breaking tool (38) is constituted by a protrusion of the locking ring (24), situated on the outer side of the ring below the engagement bead of the ring. The protrusion extends close to the lower edge of the skirt (27) and has an opening which is open at least in the downward direction.

Description

The container that has the sheet metal jar form of sheet metal lid

Technical field

The present invention relates to a kind of container that has the sheet metal jar form of sheet metal lid as described in the preamble of as appended Patent right requirement 1.

Background technology

In order to store and the peril of transportation product, have the solution on the multiple container, for example have the container of the locking ring of some form, though wherein under overvoltage and mechanical action locking ring also can and jar keep together lid.Yet, thereby the solution that does not find as yet can easily be sealed this container and can easily be removed locking ring so that open jar wittingly.

Summary of the invention

The object of the present invention is to provide a solution, wherein can seal or open the container of the sheet metal jar form that has sheet metal lid and locking ring apace by simple device.

Described purpose realizes that by container according to the present invention the characteristic of this container is found in appended Patent right requirement 1.

Description of drawings

Hereinafter with reference to accompanying drawing the present invention is described in further detail by illustrated embodiment, in the accompanying drawings:

Fig. 1 illustrates the lateral plan according to container of the present invention;

Fig. 2 illustrates the local open circuited part of the sheet metal jar that has lid with larger proportion;

Fig. 3 illustrates just the block diagram that disconnects the container behind the locking ring by the instrument that splits off; And

Fig. 4 illustrates the scheme drawing of the flow direction when the locking ring of the part of injection-molded formation container.

The specific embodiment

Container 1 according to the present invention mainly is intended to be used for store and the peril of transportation product, and very high requirement is wherein arranged on the packaging, so that container can accident not opened under the situation of improper power being subjected to.As shown in Figure 1, container is made of the sheet metal jar 2 that has sheet metal lid 3.So, container 1, promptly jar make by the relative plate that approaches of the wall that is generally sheet tin with lid, this plate has homogeneous thickness and is processed by sheet billets flat or rolling such as for example steel plates, is zinc-plated surface and may spraying paint on the outside at least on wherein at least one side.Also can spray paint on the inboard of plate to strengthen Corrosion Protection.The thickness of plate for example is 0.1 to 1.0 millimeter, is generally 0.1 to 0.5 millimeter.Thereby for example, select the relative materials with smaller of thickness, and then in shaping operation, particularly in the shaping operation to the marginal portion, obtain dimensional stability relatively preferably in order to reduce material consumption cost-cutting and the weight that is used to spray paint.

Jars 2 bottom has substrate 4, this substrate normally flat and be connected to circumferential shell wall 5, this circumferential shell wall extends upward and is conical usually slightly or may be cylindrical from substrate.For example be implemented to being connected of substrate in a conventional manner with welding, connect thereby obtain leakproof by edge sealing.Shell wall 5 seals by panel splice.In example, be fixed with handle 7 in the shell wall 5 of jar 2.

As in the cross section of Fig. 2 as seen, shell wall is advanced at the top and is become around usually by covering the circumferential circular open edge part 6 of 3 osed top jar mouths.The jar mouth has peripheral edge portion 8 equally, and this circumferential edge portions 8 specially is sealably coupled to the edge of opening 10 of jar and is intended to the closed state fastening cover.

Can see the edge of opening portion 6 of jar among Fig. 2 best, this edge of opening portion 6 is formed by the extension of shell wall 5.This means that cutting into certain size also has extension with the same panel that forms shell wall 5 except having the straight cutting part that forms shell wall, this extension at first forms edge of opening portion itself, next forms other part, and the function of this part will be described in more detail below.

Jar edge of opening portion 6 outwardly-bent at top place the dome 9 of arc forms for example to form by shell wall 5, and from the peripheral portion 11 of advancing radially outwardly downwards angledly herein away from bizet, the cross-sectional plane of this peripheral portion is straight and it forms the shape of frusta-conical surface on the whole in the example that illustrates, and promptly roughly is conical.

This conical portion 11 is advanced at the place, bottom and is circularized shoulder edge 12, and towards surface of shell 13 extensions of the jar that is positioned at edge of opening subordinate side and near this surface of shell, thereby turnup forms hidden edge closure 14 then, so that strengthen integral structure.

To be described in the clear lid that illustrates 3 in the cross section of Fig. 2 now in further detail.This lid has peripheral edge portion 15, and the outside of this circumferential edge portions has rim flange 16, and this rim flange presses the bizet of jar in the leak free mode by intermediate seal ring 17.The advance substantial cylindrical portion 19 of inside portion 18 of the shell wall that becomes to be connected in jar of the rim flange 16 of lid, in example, this cylindrical portion 19 is provided with muscle rib 20, this muscle rib 20 with jar surface of shell in cooresponding muscle rib 21 positive lockings (positive-locking) engage, thereby lid is remained on closure state.Having under the situation of cylindrical portion, the edge part of lid forms U-lag 22, so that make the volumetric loss in the container the least possible, promptly so that locate the cover part of covering 23 in the highland as far as possible with respect to the edge of opening portion of jar.

In order to ensure lid 3 sealings on jar 2 and fastening, so container 1 according to the present invention is provided with locking ring 24, this locking ring around jar edge of opening portion 6 and the peripheral edge portion 15 of lid.Locking ring is made by the elastic plastic material that has good dimensional stability and intensity such as thermoplastic plastic of injection-molded etc.The unit constitutes locking ring 24---being circular in the example---by complete closure, and it is designed under latched position as shown in Figure 1, by cover 3 machine riveting to the circumferential edge of jar and lid and 3 modes with tightening seal of will covering are firmly held on the jar 2.

As shown in drawings, locking ring 24 is configured to annular closed profiles, and it has the part 25 that roughly takes the shape of the letter U, and this U-shaped portion forms the cannelure 26 that opens wide downwards, and the circumferential edge of lid and jar is enclosed in this cannelure.In the outside of container 1, U-shaped portion 25 advances and circularizes shirt rim 27, and this annular shirt rim extends and has locking muscle rib 29 on the sidepiece 28 within it around jar always.By with downwards and outwards directed shoulder edge 12 or boss mutual action, in latched position as illustrated in fig. 1 and 2, this muscle rib 29 is with locking ring 24 and then will cover 3 and lock onto on the jar 2.More properly, U-shaped portion 25 has the flange 30 that stretches out downwards on the inboard of lid, this flange closely presses the cylindrical portion 19 of lid and advances into top 31 at the place, top, this top is pressed and is covered 3 rim flange 16 and advantageously lobed edge muscle rib 32, and this edge muscle rib helps piling up of a plurality of containers.On the outside of container, the outward flange 33 of U-shaped portion 25 stretch out downwards and cover the lid and jar between bond sites on.Extend around jar equidistantly apart from the shell wall 5 of jar shirt rim 27.

According to the present invention, locking ring 24 has weakened location 34, this weakened location is designed to disconnect even as big as opening under the effect of container with the power that splits off of obtaining the content in its inner space, and will not disconnect under the effect of the sort of power of otherwise disposing jar and must bearing according to the general standard jar during content, when container is in osed top lock-out state shown in Fig. 1 and 2.Be used for dangerous material for example container the types such as for example stress that must be able to deal with the standard that need after test, be defined as and announce for example being called the UN authentication.

Schematically indicated weakened location 34 among Fig. 1, but it is that naked eyes are sightless usually in other words substantially.Therefore weakened location 34 is horizontal on locking ring 24, oblique or extend along non-rectilinear.Be not in all embodiments weakened location all must extend to its down inward flange 36 fully from the following outward flange 35 of locking ring always, but depend on the technology that forms weakened location and the intensity of weakened location, that is to say that the intensity of weakened location can be regulated by the length of line of weakness.

See Fig. 3,,, be provided with the junction 37 that is used for such as the instrument that splits off 38 of screwdriver according to the present invention in order to produce the necessary power that splits off to disconnect the weakened location 34 of locking ring 24.Junction 37 is embodied as from the projection of shirt rim 27 transversal orientations of locking ring 24, and in example, be embodied as the pars arcuata 39 or the bridge shape portion of the edge equal opening of direction up and down, alternately, be embodied as recess under shed, its on one on the outside of shirt rim 27 is combined in the outside near the locking ring of the following outer rim 35 of locking ring 24, thereby be formed for the little space 40 of the blade 41 of the instrument that inserts, instrument can be shelved on the pars arcuata against the outside of outward flange 33.The junction be arranged in the weakened location place zone next door or should the zone, make by the outside of instrument 38 and the upwards swing of---seeing the direction of arrow 42---, produce the enough big power that splits off, make locking ring break and open at weakened location 34 places, thereby can tear off locking ring, and can dismantle lid in a conventional manner by for example inserting the proper implements between lid and the jar.The edge is flattened in some position, uncap so that rise thereby make it possible to that instrument is inserted active position.Projection is orientated as and made it not reach below the lower edge of shirt rim, and is therefore unshowy.

According to favourable embodiment, weakened location 34 forms by adopting injection-molded to make locking ring 24 in the mould of base closed, wherein mould has annular chamber, and annular chamber has the single input position that is used for for this reason being heated to form the heat of liquid thermoplastic plastic of liquid form, i.e. inlet.Schematically show as Fig. 4, it is relative along diameter by inlet is chosen to the position of the weakened location 34 of expecting, see arrow 43, the air at the weakened location of emptying simultaneously place, ring mould will be filled by two strands of heat of liquid thermoplastic plastic streams of going forward side by side, see

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44,45, these two strands of heat of liquid thermoplastic plastic streams flow with identical speed, and finally form two roughly semi-round annular halfbodies, wherein meet at the weakened location place of expection and converge herein in two of the thermoplastic plastic mass flow front portions.Therefore, it is sightless that weakened location is actually, but shown in Fig. 1 and 4 so that understand.Because the temperature on mass flow surface is a little less than the mass flow temperature inside, so can not produce the fusion of the intensity complete homogeneous identical with all the other thermoplastic plastics, therefore when the time delay of the necessity that is used for by reduction temperature and shortening fully solidifying makes thermoplastic solidifies, just produced reduction place of formation weakened location.Mold structure has passage aisle to form arciform junction.

Weakened location 34 is unshowy and in fact invisible, and projection is unshowy yet, and need instrument to disconnect locking ring 24, these factors for example help to reduce significantly children or other unwarranted people disconnects the risk of container voluntarily, thereby have realized the safety of higher degree.

The present invention is not limited to the example shown in above-mentioned and the accompanying drawing, but can change in the scope of appended Patent right requirement.For example, jar and cover and can have different shapes, for example avette or have---for example four---shapes of radiused corners a plurality of.The assembling of locking ring can realize and can realize by the trochoidal surface 11 of jar 2 and the surface interaction of locking muscle rib 29 belows by a plurality of steps.Locking ring can also the described position of injection-molded.For example combine with the whole one of lid and during near the edge of opening portion injection-molded of lid, that is to say as long as the locking ring that do not rupture just is placed in securely cover when locking ring, is favourable, because ring must be easy to dismounting like this.In principle, be not self evident although the quantity of weakened location and junction will equate this point, can conceive two or more weakened location and two or more junction that is used to the instrument of splitting off.If two or more inputs position for example is set in mould symmetrically, will form two or more weakened location so, formed the stream of plastic of respective amount in this case, these stream of plastic are met midway and are formed two or more weakened location together.

Claims

1. the container of a sheet metal jar (2) form, described sheet metal jar (2) have the detouchable sheet metal lid (3) that is used to seal and expose the storage area of article, wherein,

Described container is about diad (1) rotation symmetry and have substrate (4) that is positioned at the place, bottom and the shell wall (5) that is connected in described substrate, described shell wall (5) has the circumferential openings edge part (6) of vessel port defined (7) at the place, top, when described lid assembles, described vessel port (7) by described lid peripheral edge portion (15) and the mutual action between described jar the described edge of opening portion seal;

Described lid is guaranteed not opened by accident by elastoplast locking ring (24), described locking ring (24) is constructed with the closed profile of annular of the part (25) that roughly takes the shape of the letter U, described U-shaped portion (25) forms the cannelure (26) under shed, described cannelure (26) is sealed the peripheral edge portion of described lid and described jar described edge of opening portion and fastening described lid, and annular muscle rib (29) is bonded on the below of radially salient (12) of described jar described edge of opening portion (6);

Described edge of opening portion is formed by the extension of described shell wall (5), thereby described extension back bending forms described radially salient;

Described locking ring (24) has at least one weakened location (34), described weakened location is designed to: when described weakened location (34) be subjected to surpass disposing described container fixing maximum load split off power the time, thereby disconnecting, described weakened location opens described container, and described locking ring has near the junction that is used to the instrument of splitting off (38) (37) that is positioned at the described weakened location, so that can disconnect the described weakened location of described locking ring by swing, it is characterized in that, described weakened location (34) is that naked eyes are sightless basically, and the described junction (37) that is used to the instrument of splitting off (38) by on the outside that is positioned at described ring of described locking ring (24) and the projection of transversal orientation that is positioned at described joint muscle rib (29) below of described ring constitute, and described projection is extended near the lower edge of shirt rim (27) and is had an opening that opens wide at least in a downward direction.

2. container as claimed in claim 1 is characterized in that, described weakened location (34) forms by adopting injection-molded to make described locking ring (24) in the mould of ring seal, and described mould has the input position that is used for each weakened location.

3. container as claimed in claim 1 is characterized in that, described locking ring (24) is independent element, and under lock-out state, described element has around the profile of upper edge (25) the positive locking described circumferential portion (6) to described lid by means of it.

4. container as claimed in claim 1 is characterized in that, is furnished with the gap between the salient of the inboard of described locking ring and described edge of opening portion (15), so that described locking ring can be pressed into during splitting off action.

5. container as claimed in claim 1 is characterized in that, described projection is embodied as up and down all pars arcuatas (39) of opening.

6. container as claimed in claim 1 is characterized in that, the complete transversal orientation of described projection and not reaching downwards below the lower edge (35) of described shirt rim.