DE102007060743A1 - Shoe, preferably ski boot or hiking boots, safety boot, sports shoe, bicycle shoe comprises construction elements made of magnesium sheet or extruded magnesium sheath, where the construction elements are joining elements - Google Patents

Abstract

Shoe comprises one or more construction elements made of magnesium sheet or extruded magnesium sheath. An independent claim is included for a procedure for the production of the shoe comprising processing magnesium sheet or extruded magnesium sheath.

Description

The The invention relates to a shoe comprising one or more construction elements from magnesium sheet or magnesium extruded profile, as well as Process for its preparation.

State of the art

Shoes should have the highest possible comfort and partially fulfill additional functions. Shoes with especially high wearing comfort can be a combination of non-deformable and deformable elements, wherein the deformable elements ensure freedom of movement and suspension of the foot and the non-deformable elements uniform distribution of forces over the foot or parts of the foot cause. The wearing comfort results from the combination of freedom of movement, Suspension and the appropriate distribution of forces. In addition, a particularly low weight of the shoe is usually considered as a criterion for high wearing comfort. Furthermore a shoe can be characterized by other functions, such as a protection against injuries of the foot, as for example with ski boots or safety shoes is the case, or by the dissipation of static electricity over the Shoe brine, what the electrostatic charge of the wearer can prevent.

• – unnötig hohe Wandstärke, dadurch bedingt, daß die Herstellung der Elemente durch Guß erfolgt, wobei dieser nur mit gewissen Mindestwandstärken fehlerfrei verläuft
• – Korrosionsempfindlichkeit, insbesondere bei Magnesiumgußteilen
• – Kriechempfindlichkeit, insbesondere bei Magnesiumgußteilen

An important task in the manufacture of a shoe consists of the proper combination of non-deformable and deformable elements and in a suitable connection thereof. In particular, the non-deformable plastic elements often have the disadvantage of low strength based on the weight or the volume of the element. The use of metal parts to overcome this disadvantage. Metal parts that are used as part of shoes are, for example, stiffening elements, closure elements, shell elements, tension elements, tensioning elements and locking elements. As a rule, zinc and aluminum castings are used; In addition, magnesium castings have also been widely used. If these metal castings are used, they are predominantly of high strength but have various other disadvantages with respect to their service properties:

• - unnecessarily high wall thickness, due to the fact that the production of the elements takes place by casting, which runs error-free only with certain minimum wall thicknesses
• - Corrosion sensitivity, especially in Magnesiumgußteilen
• - Creep sensitivity, especially in Magnesiumgußteilen

• – arbeitsaufwendiges und energieintensives Herstellverfahren des Metallelements, beispielsweise das Gießen von Zink, Aluminium und Magnesium in eigens dafür hergestellten Gießformen
• – Bruchempfindlichkeit, die für einen gewissen Anteil einer Produktionsserie von Gußstücken immer kennzeichnend ist
• – besonders aufwendiges Gußverfahren für Magnesium, weil hier infolge der von Magnesium ausgehenden Brandgefahr unter Schutzgas gearbeitet werden muß

Furthermore, in the manufacture of metal castings, various disadvantages arise which make the manufacturing process expensive

• - labor-intensive and energy-intensive production process of the metal element, for example, the casting of zinc, aluminum and magnesium in specially prepared molds
• Fracture sensitivity, which is always characteristic of a certain proportion of a series of castings
• - Particularly complex casting process for magnesium, because it must be worked here as a result of the fire risk of magnesium under inert gas

While magnesium castings obviously have the advantage of extremely low specific gravity over zinc and aluminum, the above-described disadvantages have prevented a varied use of magnesium castings. In US 6499235 a shoe is described, the sole elements are connected by a bar, which may be made of aluminum, magnesium or other material. It is not carried out how the bar is made, and there are no comments on how to avoid the disadvantages described above.

It was therefore the task of metal construction elements for To find shoes, on the one hand, a very low specific Have weight and on the other hand in terms of the manufacturing process of a shoe and not in terms of its functional properties have the disadvantages described above. It was also the task of a To find a manufacturing process for shoes in which the above described disadvantages are avoided.

Description of the invention

These Task is solved by a shoe, one or more Construction elements made of magnesium sheet or magnesium extruded profile having.

By design elements are meant the parts that make up the shoe. Different construction elements are joined together by suitable connection techniques to the shoe and can consist of different materials. By magnesium sheet is meant a sheet of magnesium made by rolling or casting rolls of magnesium. Magnesium extrusion profile is understood to mean a body which is produced from magnesium by extrusion. The rolls, casting rolls and extruders are familiar to the person skilled in the art. The magnesium sheet or magnesium extruded profile used for the invention is to be distinguished from parts of cast magnesium, the already obtained during the casting their final, determined by the intended use for the production of construction parts for shoes shape. One particular advantage of magnesium sheet is, inter alia, that it can be rolled during manufacture and thereby has a strength that can not be achieved with castings.

With Magnesium is pure magnesium and alloys meant to more than 50% by weight, preferably more than 80% by weight, of magnesium consist. Very particularly preferred are alloys with a generalized Composition according to one of the groups 1 below to 4, used for the production of rolled sheets or extruded sheets Profiles are particularly suitable:

Group 1

• Aluminum 1.9 to 3.3% by weight
• Rare earths 0.2 to 0.8% by weight
• Manganese 0.1 to 0.5% by weight
• Rest of magnesium

Group 2

• Aluminum 1.9 to 9.3% by weight
• Zinc 0.1 to 1.3% by weight
• Rare earths 0.1 to 0.8% by weight
• Manganese 0.05 to 0.6% by weight
• Strontium 0 to 1%
• Calcium 0 to 0.8%
• Rest of magnesium

Group 3

• Zinc 0.4 to 5% by weight
• Rare earth 0 to 2% by weight
• Manganese <0.2 Wt.%
• Zircon 0 to 0.8% by weight
• Rest of magnesium

Group 4

• Manganese 0.5 to 1.6% by weight
• Strontium 0 to 1.5% by weight
• Rest of magnesium

By "residual magnesium" it is meant that the remainder of the alloy consists predominantly of magnesium, which does not indicate traces of other elements in a concentration of up to 500 ppm per element and up to 10,000 ppm in total, preferably up to 2000 ppm in total excludes. Very particular preference is given to the following magnesium alloys familiar to the person skilled in the art, for which detailed information is available in US Pat DE 10 2006 057 719 A1 and Kirk-Othmer, Encyclopedia of Chemical Technology, John Wiley & Sons 2005, chapters Magnesium and Magnesium Alloys: AE20, AE21, AE31, AZ21, AZE210, AZE211, AZE311, AZ.1311, AZE310 + Ca, AZE311 + Ca, AZE802, Z1, ZK10, ZE10, ZE41, ZEK100, ZEK410, ME10, ME11.

• a) 10 bis 20 Gew.% Aluminium
• b) 2,5 bis 10 Gew.% Zink
• c) 0,3 bis 2 Gew.% Kupfer oder bis zu 2 Gew.% Nickel

aufweisen. Der Vorteil der zuletzt genannten Legierungen besteht darin, daß diese trotz eines hohen Kupfer und Nickelgehalts korrosionsunempfindlich sind, und daher auch aus Magnesiumrecyclat, das gewöhnlich mit Kupfer und Nickel verunreinigt ist, hergestellt werden können. Näheres dazu ist in WO 2007/009435 A1 erläutert.Since the construction elements of the shoe may be exposed to the effects of the weather, a shoe is also preferred which comprises at least one corrosion-resistant magnesium construction element. By "non-corrosive magnesium" is meant pure magnesium and magnesium alloys containing less than 250 ppm copper, less than 10 ppm nickel, and less than 50 ppm iron. Furthermore, these are magnesium alloys, the

• a) 10 to 20 wt.% Aluminum
• b) 2.5 to 10% by weight of zinc
• c) 0.3 to 2 wt.% Copper or up to 2 wt.% Nickel

exhibit. The advantage of the latter alloys is that they are resistant to corrosion despite a high copper and nickel content, and therefore can also be made from magnesium recyclate, which is usually contaminated with copper and nickel. More details are in WO 2007/009435 A1 explained.

• – Konstruktionselemente (L) und (M) weisen mechanische Eigenschaften auf, die eine reversible mechanische Deformation über einen deutlich weiteren Deformationsbereich erlauben, als dies bei vergleichbaren gegossenen Konstruktionselementen (K) der Fall ist. Somit ist eine federnde Wirkung mit Konstruktionselementen (L) und (M) leichter zu realisieren als mit Konstruktionselementen (K). Eine federnde Wirkung ist insbesondere bei Konstruktionselementen, die in der Sohle des Schuhs zum Einsatz kommen, erwünscht.
• – Die Festigkeit von Konstruktionselementen (L) kann durch Umbiegen des Randes ("bördeln") erhöht werden, was gegenüber Konstruktionselementen (K) gleicher Größe ein niedrigeres Gewicht bei gleicher Steifigkeit erlaubt. Dieser Effekt wird insbesondere bei Schalen- und Verbindungselementen ausgenutzt.
• – Die Konstruktionselemente (L) und (M) können mit maßgeschneiderter Anisotropie der mechnanischen Eigenschaften hergestellt werden, während dies bei Konstruktionselementen (K) nicht möglich ist. Insbesondere Konstruktionselemente (L) können mit besonders hoher Anisotropie hergestellt werden. Anisotropie bedeutet hier, daß das Konstruktionselement unterschiedliche mechanische Eigenschaften aufweist, je nachdem ob diese längs oder quer zur ursprünglichen Walz- oder Preßrichtung betrachtet werden. Beim Herstellprozeß der Konstruktionselemente (L) und (M) kann also gezielt eine Anisotropie des Materials ausgenutzt werden, indem das verwendete Magnesiumblech oder Magnesiumstrangpressprofil erst nach Ausrichten in eine bestimmte Orientierung geschnitten, gestanzt oder gebogen wird.
• – Konstruktionselemente (L) können durch Vernieten von mehreren einzelnen Blechen hergestellt werden, was bei Gußteilen in der Regel zu Problemen führt, die sich in einem hohen Ausschuß an schadhaften Teilen manifestieren.
• – Ferner weisen Konstruktionselemente (L) und (M) ein geringeres Gewicht auf, als Konstruktionselemente aus Aluminium und verstärkten Kunststoffen, die mit vergleichbarer Festigkeit ausgelegt sind.

As tests have shown, the use of magnesium sheet (L) and magnesium extruded section (M) construction elements has the following advantages over the use of magnesium structural elements (K):

• - Construction elements (L) and (M) have mechanical properties that allow a reversible mechanical deformation over a much wider range of deformation than is the case with comparable cast construction elements (K). Thus, a resilient effect with construction elements (L) and (M) is easier to implement than with construction elements (K). A resilient effect is particularly desirable in structural elements used in the sole of the shoe.
• - The strength of structural elements (L) can be increased by bending the edge ("crimping"), which compared to construction elements (K) of the same size allows a lower weight with the same stiffness. This effect is used in particular in shell and fasteners.
• The structural elements (L) and (M) can be made with tailored anisotropy of the mechanical properties, whereas this is not possible with structural elements (K). In particular, structural elements (L) can be produced with particularly high anisotropy. Anisotropy here means that the construction element different me has chanical properties, depending on whether they are considered longitudinally or transversely to the original rolling or pressing direction. In the production process of the structural elements (L) and (M), an anisotropy of the material can thus be exploited in a targeted manner by cutting, punching or bending the magnesium sheet or magnesium extruded profile used only after alignment in a specific orientation.
• - Construction elements (L) can be prepared by riveting several individual sheets, which usually leads to problems in castings, which manifest themselves in a high proportion of defective parts.
• - Furthermore, construction elements (L) and (M) have a lower weight than structural elements of aluminum and reinforced plastics, which are designed with comparable strength.

All these advantages are desired in the manufacture of a shoe, because it is here on the best possible interpretation of the mechanical Properties with the lowest possible design effort and As low as possible weight arrives. So can the mechanical Anisotropy may be desirable because it is the manufacture of Shoes with finely tuned wearing properties allowed. Spring Construction elements for shoes made by molding Magnesium are produced, are not yet known. Here creates the use of design elements remedy that rolled out or cast-rolled magnesium sheet, in particular by hot-forming and Deep drawing can be made.

It can also be a structural element used by Laminating of two or more magnesium sheets is obtained. Especially preferred are laminates formed by laminating two to five Magnesium sheets are obtained. The lamination is done by flat Bonding, for example with adhesives or with hotmelt adhesives, the latter being processed at elevated temperature. A laminated construction element of magnesium sheets has a particularly high strength with good damping on. At the same time, by laminating, depending on the orientation the sheets to be laminated to each other, the anisotropy of the material be specifically reduced.

Especially preferred is a shoe in which the construction elements a high Have aspect ratio. With aspect ratio is the ratio of the largest measurable Length of the construction element based on its smallest meant measurable wall thickness. A high aspect ratio is an aspect ratio> 10. Structural elements of magnesium sheet are very particularly preferred Wall thickness 0.5 to 3 mm, the lateral extent more than ten times its wall thickness.

All Design elements made of magnesium extruded profile are also particularly preferred the wall thickness 0.5 to 3 mm, whose length is ten times their lowest wall thickness is. If it is about magnesium extruded profiles with different wall thicknesses are those which are preferred, whose length is ten times their lowest wall thickness is. With wall thickness Here, the material thickness is meant to be perpendicular to a plane is measured from the edges of the profile become independent not considered as planes by their geometric form. The construction element may be in a preferred embodiment of the invention have a profile corresponding to the letters I, V, L, T, R or O is similar. An O-shaped profile can be Be a pipe or a rod. Further, also double T-shaped Magnesium extrusions possible.

• – Verformbare Konstruktionselemente weisen eine reversible oder nicht reversible Deformation von mehr als 1% auf wenn sie einer statischen Last von 1 kg/cm² ausgesetzt werden.
• – Nicht verformbare Konstruktionselemente weisen eine Deformation von weniger als 1% auf wenn sie einer statischen Last von 10 kg/cm² ausgesetzt werden, wobei der nicht-reversible Anteil der Deformation weniger als 0,1% beträgt.

Particularly preferred is a shoe, which in addition to deformable construction elements non-deformable construction elements, the latter being made of magnesium. It is to be distinguished here between deformable and non-deformable elements in the following manner:

• - Deformable structural elements have a reversible or irreversible deformation of more than 1% when subjected to a static load of 1 kg / cm ² .
• - Non-deformable construction elements have a deformation of less than 1% when subjected to a static load of 10 kg / cm ² , the non-reversible part of the deformation being less than 0.1%.

With Deformation is a change in the external dimensions of the structural element in the direction of an externally acting Meant power; the percentages refer to the extent of these Deformation compared to the unloaded state. The static Last is the weight over the area projection of the construction element in a plane perpendicular to the acting Power lies. In a preferred embodiment exist the deformable construction elements and other construction elements, which the shoe is made of, fabric, fibers, paper, Leather and plastic, whereby the term plastic also plastic foam and Rubber covers.

In a preferred embodiment, the structural elements made of magnesium are shell elements, support elements or connecting elements. Shell elements are construction elements that simulate the contour of the foot in the sole region or in the upper shoe. By way of example, the following embodiments of the inven A shoe consisting of an upper shoe ( 1 ) and sole element ( 2 ) comprises a shell element ( 3 ), which serves as impact protection for the forefoot ( 1 ). A shoe consisting of upper shoe ( 1 ) and sole element ( 2 ) comprises a shell element ( 4 ), which serves to distribute the pressure under the heel ( 2 ). A shoe consisting of upper shoe ( 1 ) and sole element ( 2 ) comprises in the stub a support element ( 5 ) with crimped edges, which serves as suspension under the heel ( 3 ) and by riveting ( 7 ) with a shell element ( 6 ) is connected to the heel ( 4 ). A ski boot consisting of upper shoe ( 1 ) and sole element ( 2 ) comprises tension elements ( 9 . 9 ' ), with the upper shoe ( 2 ) by riveting ( 10 . 10 ' ) and the power of tensioning devices ( 8th . 8th' ) transferred to the upper shoe ( 5 ). The Elements 3 . 4 . 5 . 6 . 9 and are 9 ' are made of magnesium sheet.

Shell elements are curved flat elements. Magnesium shell elements as construction elements for shoes are new. According to the invention shoes with shell elements made of magnesium sheet whose wall thickness is 0.1 to 30 mm. Particularly preferred are shoes with shell elements made of magnesium sheet, whose wall thickness is 0.5 to 3 mm. Shoes with shell elements are very particularly preferred, the shell elements being produced by deformation from magnesium sheet. With a wall thickness of 0.5 to 3 mm, the contour length is very particularly preferred shell elements 1 cm or more. The contour length ( 11 ) is an area projection of a connecting line between any two points on the surface of the shell element, characterized in that the tangents of these points intersect at an angle of 90 ° and the surface projection is on one of the two tangents ( 6 ). Support elements are elements that hold shell elements in a certain position. According to the invention, support elements made of magnesium sheet or Magnesiumstrangpreßprofil. These are preferably support elements that are used in the sole region of the shoe. Fasteners are magnesium sheets or magnesium extrusions that are used to connect construction elements of the shoe.

In a preferred embodiment, the construction elements from magnesium holes on. In the processes for the preparation of Shoe according to the invention are such methods preferred in which bores introduced into the magnesium sheet before this - for example, shell elements - deformed becomes. The job of the holes is to make an opening for riveting, screwing and sewing form, or therein, during encapsulation mechanical hold for the Plastic, which is used for overmolding to offer. The holes can also be used to save weight.

Prefers is also a shoe in which a structural element of magnesium with at least one other construction element, in particular with a non-metallic structural element frictionally, connected is. Under frictional is understood that a Force that acts on the one structural element, with a Friction or damping loss of less than 50% that the other construction element is transmitted. In A particularly preferred embodiment is a construction element magnesium with at least one non-metallic construction element connected, wherein the compound by thermal action or by using an adhesive or by a combination of the two or by molding the magnesium construction element with plastic he follows.

Prefers is also a shoe in which a structural element of magnesium with at least one other structural element of magnesium connected is.

Especially preferred is a ski boot or a hiking boot, the reinforcements in the area of the upper shoe or the sole consisting of bands or Having shell elements, wherein bands or shell elements are made of magnesium sheet. Very particularly preferred Furthermore, a ski boot or a hiking boot, the closure elements - such as For example, buckles - which, on tension elements are attached from magnesium sheet, wherein the magnesium sheet a Thickness of 0.5 to 3 mm and a width of 8 to 40 mm and wherein the closure elements of magnesium or may be made of a different material.

Especially preferred is a roller skate, wherein the holder of the rollers at least Partly made of magnesium sheet or Magnesiumstrangpreßprofil. Under roller skate is also understood here as a so-called "inliner", by which is meant a skate in which 2 to 6, preferably 3 to 4 rollers are arranged one behind the other and wherein the rollers are preferred lie in one plane.

Especially preferred is a skate, wherein the holder of the skid at least partly from magnesium sheet or magnesium extruded section consists.

Especially preferred is a sports shoe, the shell elements of magnesium sheet in the sole area and a sports shoe, the fasteners made of magnesium sheet or magnesium extruded profile in the sole area having.

Particularly preferred is a security shoe, which has shell elements of magnesium sheet in the region of the upper shoe, which serve in particular to protect the forefoot from injury - for example, by impact, by falling loads or by crushing. Especially preferred in this case is a safety shoe, which has a bent cap of magnesium sheet of wall thickness 0.5 to 12 mm in the area of the forefoot. The safety shoe can be, for example, a shoe or boot for riding a motorcycle.

Especially preferred is a safety shoe, which is static dissipative Electricity is designed and in the sole area at least a construction element of magnesium sheet or magnesium extruded having. If it is magnesium sheet, closes this so-called expanded metal, that of sheet metal for example, by introducing a regular pattern and subsequent stretching is available.

According to the invention Furthermore, a shoe in which a provided with holes plate Magnesium sheet is attached to the sole of the shoe, taking plate for attaching the shoe to bicycle pedals, ice skates or inline rollers.

The apply above erfindungemäßen advantages analogously also for bowl-shaped elements, as an impact protection for elbow, hand, knee, head or back serve. According to the invention therefore also an impact protection for elbows, hands, knees, Head or back comprising one or more construction elements Made of magnesium sheet or magnesium extruded profile. Most notably preferred is an impact protection for elbows, knees or Spine comprising at least one shell element Magnesium sheet, wherein the shell element in use by straps held in the desired position. Most notably also preferred is an impact protection for elbows, Knee or spine comprising at least one shell element made of magnesium sheet, wherein the shell element as firmly anchored Component of sportswear when used in the desired position under sportswear, especially trousers, jackets, Sweaters and overalls are understood, for example for Use in Biking, Hockey, Cricket, Baseball, American Football, Boxing, Ice Hockey, Inline Riding, Motorcycling, Parachuting, Skiing, snowboarding and kiteboarding are produced.

• (A) Magnesiumblech oder Magnesiumstrangpreßprofil wird durch Stanzen oder Schneiden zugeschnitten und gegebenenfalls mit einem Profil versehen, wobei durch diesen Produktionsschritt ein Konstruktionselement für einen Schuh erhalten wird.
• (B) Zwei oder mehr Konstruktionselemente aus Magnesium werden verbunden, so daß ein komplexes Konstruktionselement entsteht.
• (C) Wenigstens ein Konstruktionselement aus Schritt (A) oder (B) wird mit wenigstens einem anderen Konstruktionselement eines Schuhs verbunden.

According to the invention, a process for the production of shoes, comprising the following sequence of production steps:

• (A) Magnesium sheet or magnesium extruded section is cut by punching or cutting and optionally provided with a profile, whereby a construction element for a shoe is obtained by this production step.
• (B) Two or more magnesium structural elements are bonded to form a complex structural element.
• (C) At least one construction element of step (A) or (B) is joined to at least one other construction element of a shoe.

All preferred is a method in which in production step (A) a Magnesium sheet cut by punching simultaneously and with a profile is provided. Under profile is a vault of the Magnesium sheet understood in one or more directions. The vault can, for example, the outer shape of a part imitate a foot. The process in which a sheet is profiled. The Profiling can be done by pressing, hammering, rolling and deep drawing take place, whereby forms can be used, which determine the shape of the profile. Particularly preferred is a Method in which in production step (A) a magnesium sheet is present the punching in a certain direction relative to the punching tool is oriented, so that after punching a construction element with desired anisotropy of the mechanical properties is obtained. Particular preference is further given to a method the magnesium sheet before being provided with a profile, if necessary even before cutting, is provided with holes. The drilling of unshaped magnesium sheet before punching and cutting less costly than drilling or re-drilling castings, used in prior art methods. Step (B) is optional and is omitted in a particularly preferred Execution of the procedure completely. Step (B) can by Welding, gluing or riveting done.

Prefers is a method in which production step (C) by riveting, Welding, hooking, screwing, sewing or is performed by molding with plastic

Prefers is also a method in which production step (C) thereby is carried out that the structural elements to be connected at least partially superimposed and then by Punching or embossing a firm connection between them is created, through this process also openings can arise at the junction that leads to a Entangle the structural elements.

Also preferred is a method in which Production step (C) takes place in that the construction element from production step (A) or (B) is loosely inserted into a shoe. This can serve, for example, the stiffening of the shoe.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - US 6499235 [0005]
• - DE 102006057719 A1 [0010]
• WO 2007/009435 A1 [0011]

Claims (26)

Shoe comprising one or more construction elements Made of magnesium sheet or magnesium extruded profile. Shoe according to claim 1, characterized in that at least a structural element is used that consists of each other consists of laminated magnesium sheets. Shoe according to claim 1, characterized in that the Design elements have a high aspect ratio. Shoe according to claim 1, characterized in that at least a construction element of magnesium sheet of thickness 0.5 to 3 mm exists. Shoe according to claim 1, characterized in that at least a construction element of magnesium extruded with the Wall thickness 0.5 to 3 mm. Shoe according to claim 1, characterized in that at least a construction element of I, V, L, T, R, O or double T-shaped Magnesium extruded profile exists. Shoe according to claim 1, characterized in that the Construction elements are at least partially bent. Shoe according to claim 1, characterized in that the Construction elements have holes. Shoe according to claim 1, characterized in that the Construction elements shell elements, support elements or Connecting elements are. Shoe according to claim 1, characterized in that parts of the shoe made of plastic. Shoe according to the preceding claim, characterized that at least one structural element of magnesium with at least one structural element made of plastic non-positively connected is. Shoe according to claim 1, characterized in that the Magnesium sheet or magnesium extruded profile made of corrosion-resistant magnesium consists of or selected from at least one magnesium alloys consists of the following groups 1 to 4. Group 1 aluminum 1.9 to 3.3% by weight Rare earths 0.2 to 0.8% by weight manganese 0.1 to 0.5% by weight Rest of magnesium Group 2 aluminum 1.9 to 9.3% by weight Zinc 0.1 to 1.3% by weight Rare earth 0.1 to 0.8% by weight Manganese 0.05 to 0.6% by weight strontium 0 to 1% Calcium 0 to 0.8% Rest of magnesium group 3 Zinc 0.4 to 5% by weight Rare earth 0 to 2% by weight Manganese <0.2% by weight zircon 0 to 0.8% by weight Rest of magnesium Group 4 Manganese 0.5 up to 1.6% by weight Strontium 0 to 1.5% by weight Rest of magnesium Shoe according to claim 1, in addition to deformable construction elements having non-deformable construction elements, the latter Made of magnesium. Ski boot or hiking boot according to claims 1 to 13. Safety shoe according to claims 1 to 13. Sports shoe according to claims 1 to 13. Bicycle shoe, roller skate or skate according to claim 1 to 13. Safety shoe according to claim 1 to 13, a Magnesium shell element for toe protection. Safety shoe according to claim 1 to 13, which is in Sole area has a construction element made of magnesium. Impact protection for elbow, hand, knee, head or spine, comprising one or more construction elements Made of magnesium sheet or magnesium extruded profile. Process for making a shoe after a of claims 1 to 19, characterized in that magnesium sheet or magnesium extruded profile is processed. A method of manufacturing a shoe according to claim 21, comprising the steps of (A) cutting and optionally profiling magnesium sheet or magnesium extruded profile, wherein a structural member for a shoe is he (B) welding, gluing or riveting two or more magnesium structural elements to form a complex structural element, (C) joining a structural element of step (A) or (B) to at least one other structural element of the shoe; Step (B) is optional and wherein optionally before or after step (A) the magnesium sheet or magnesium extrusion is provided with at least one bore. Method according to claim 22, characterized in that that step (C) is done by gluing. Method according to claim 22, characterized in that that step (C) takes place by injection molding with plastic. Method according to claim 22, characterized in that that step (C) by welding, hooking, screwing, Sewing or punching done. Method according to claim 22, characterized in that that step (C) is done by inserting.