Protective boot

Abstract

The protective shoe comprises an upper for accommodating the foot of a person wearing the shoe, a sole structure connected to the upper, a toe cap (2), and at least one connecting and indicating portion (26, 27) which indicates the integrity of the protective shoe in an original, integrated state and which indicates the disassembly of the protective shoe when the protective shoe is at least partially disassembled.

Description

[Technical field]

[0001] This patent application claims priority from German patent application DE 10 2022 202 833.3, the content of which is incorporated herein by reference.

[0002] The present invention relates to protective footwear, for example in the form of protective work or safety shoes. [Background technology]

[0003] Protective shoes are generally known from the prior art through conventional public use. In many cases, these shoes have the drawback that their components cannot be recycled or can only be recycled to a very limited extent. Protective shoes generally consist of a wide variety of materials or components, which are also connected to one another in various ways. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention is based on the object of overcoming the drawbacks of the prior art. In particular, it is intended to provide a protective shoe that can be recycled to a very high extent, preferably completely, in a sustainable manner. The integrity of the protective shoe should also be discernible, in particular from the outside (appearance). [Means for solving the problem]

[0005] This object is achieved in an unobvious way by the features defined in independent claim 1. According to the invention, it has been found that by means of at least one connection and indicator, it is possible to indicate the integrity of the protective footwear. Thus, for example, it is possible to identify that the protective footwear is in its original state, i.e. undamaged or unaltered. The protective footwear can be disassembled or dismantled, in particular for the purpose of recycling.

[0006] At least one of the connections and the indicators may be manufactured mechanically or manually.

[0007] The protective footwear is, for example, in the form of a high-leg shoe or a boot. Alternatively, for example, it is in the form of a low shoe. Advantageously, the protective footwear in the assembled state complies with safety classes S1, S1P, S2, S3, S4 or S5. It is, for example, at least partially waterproof. Advantageously, or alternatively, the protective footwear is, for example, at least partially breathable.

[0008] The upper preferably forms the upper part of the protective shoe. It has a height corresponding to the configuration of the protective shoe as a high-leg shoe / boot or a low shoe. The upper preferably comprises a front cap, a tongue and / or a rear cap. It is advantageous if the upper has or supports at least one fastener for fastening the shoe to the wearer or for facilitating putting on and / or taking off the protective shoe. For example, the inside of the upper is at least partially lined or padded. It is advantageous for the upper to have an exterior that is completely closed or at least partially open.

[0009] The sole structure preferably forms the bottom of the protective shoe. It may, for example, include an innersole, a topsole, an insole and / or an outsole in addition to a midsole. The sole structure may, for example, be multi-layered or multi-part.

[0010] Further advantageous configurations are defined in the dependent claims.

[0011] The at least one connection and indicator according to dependent claim 2 is produced, for example, under pressure and / or heat. It preferably forms a welded connection or a welded seam. The at least one connection and indicator can be produced quickly and economically, in particular by machine. Alternatively, it can be produced, for example, by sewing.

[0012] At least one connection and indicator according to dependent claim 3 allows an easily, clearly identifiable and functionally reliable indication of at least partial disassembly of the protective shoe, which indication is preferably irreversible.

[0013] An easily, clearly identifiable and functionally reliable indication of at least partial disassembly of the protective shoe is furthermore made possible by the at least one connection and indicator as claimed in dependent claim 4. The connection established by the at least one connection and indicator is functionally reliable and can withstand loads.

[0014] When dismantling the protective footwear, it is preferable that the inner shoe must be dismantled first. Only after that can further components of the protective footwear be dismantled. At least one connection and indicator preferably indicates dismantling of the protective footwear at the same time that the inner shoe is dismantled.

[0015] The at least one first connection and indicator part according to dependent claims 8 to 10 can be easily identified from the outside, for example by the wearer of the shoe or by other people, as well as the at least one second connection and indicator part according to dependent claims 11 and 12.

[0016] The protective shoe according to dependent claim 13 can be of various designs. It preferably has the same sole structure as a base. This allows a particularly economical production and is convenient to use.

[0017] The sealing means according to dependent claim 14 may for example be continuous or discontinuous. It may for example comprise a single sealing element or individual sealing elements, for example spaced apart from one another. The individual sealing elements may for example be identical or different. The sealing means is preferably spatially separated.

[0018] The sealing means may for example comprise at least one logo or embroidery as a sealing element. The sealing element may at least partially cover or overlap a specific area of ​​at least one seam of the protective shoe. The sealing element may for example be formed by at least partially sewing over the respective seam.

[0019] Alternatively or additionally, the sealing means may include, for example, at least one seal joint, seal, seal patch, seal stud, seal rivet, seal label, seal cord, seal lace, seal shoelace, seal holder, or the like.

[0020] According to dependent claim 15, at least one connection and indication is in the form of a sealing seam. For example, the sealing seam may be formed by at least one thread or seam, which thread or seam can be clearly, e.g. uniquely or specifically / specially identified. For example, at least one thread or at least one seam has at least one special mark. This thread or seam has, e.g., a specific charge or color. For example, it is magnetized and / or carries specific information. For example, it can be read electrically / electronically. Alternatively or additionally, the sealing seam has a unique or specific / special form or shape. It includes, e.g., a logo, a trademark, etc.

[0021] The sealing means or sealing seam indicates the integrity of the protective footwear, in particular in its original or undamaged state, and in particular indicates that the protective footwear has not been at least partially disassembled. In particular it can be designed to indicate whether the protective footwear has been manipulated, in particular whether it has been at least partially disassembled or damaged. The sealing means or sealing seam is advantageously permanent during use. The sealing means or sealing seam can preferably be modified if the protective footwear is, for example, returned to the manufacturer and / or an authorized location and / or if the protective footwear is repaired at the manufacturer and / or an authorized location.

[0022] Advantageously, the sealing means or sealing seam only functions as a seal, in particular, the sealing means or sealing seam does not provide a fixing or retaining connection between different parts of the protective shoe.

[0023] The sealing means or sealing seam may not have any particular structural connection and / or load-bearing function.

[0024] For example, if parts of the protective footwear, such as the inner shoe, the toe cap and / or the midsole, are disassembled or removed, the sealing means or sealing seam will tear or break. In general, the sealing means, and in particular the sealing seam, can be designed to indicate a deviation from normal use of the shoe, in particular by a change, in particular by a break, in the shoe, in particular in the connections between the different parts of the shoe.

[0025] It is particularly possible to form a connection in the form of a predetermined breaking point between two parts of a protective shoe, for example between an inner shoe, a toe cap and / or a midsole and an upper and / or a sole of the shoe, which connection has no function, in particular a load-bearing or retaining function, when the shoe is in normal use.

[0026] The sealing means may in particular form a connection in the form of a predefined breaking point between two parts of the protective shoe, for example between the inner shoe, the toe cap and / or the midsole and the upper and / or the sole of the shoe, which two parts are structurally connected to each other, in particular robustly connected to each other by a connection independent therefrom. In particular, the two parts may be connected to each other in a form-fit and / or force-fit manner in addition to the sealing means.

[0027] The sealing means in particular has a strength lower than the strength of the additional connection between the two parts. The ratio of the strength, in particular the tear resistance, of the additional connection to the strength of the sealing connection may in particular be at least 1.5:1, in particular at least 2:1, in particular at least 3:1, in particular at least 5:1, in particular at least 10:1.

[0028] The sealing means may in particular be designed such that disassembly of at least one particular part of the shoe, such as the inner shoe, the sole, in particular the insole, or the toe cap, is not possible without modification, in particular without destruction of the sealing means.

[0029] The sealing means or sealing seam can be fixed or formed, for example, on the upper and / or on the inner shoe. It is, for example, in the form of a sealing label and is fixed to the upper and the inner shoe. Alternatively, the sealing means or sealing seam is fixed to the upper adjacent to the upper opening for the foot and at least partially surrounds the upper. In particular, a sealing cord or sealing lace is used, for example, supporting or carrying the seal. Alternatively or additionally, the damage or destruction is caused by at least one sealing element holder or carrier for holding or carrying the sealing element or the connecting element. For example, the sealing element is in the form of a sealing shoelace, which tears or breaks when the inner shoe, the toe cap and / or the midsole are removed. It is, for example, in the form of a sealing cord, sealing lace, etc., which extends adjacent to the shoelace opening and tears or breaks when the inner shoe, the toe cap and / or the midsole are removed.

[0030] The midsole of the sole structure or the midsole of the protective shoe is subdivided, especially in the longitudinal direction, into at least two midsole parts. It preferably has at least one connecting element, which extends in the longitudinal direction and connects the midsole parts to one another. It has been found that the subdivision of the midsole, especially into individual, for example 1 to 5, midsole parts and at least one connecting element, which connects them to one another, especially detachably or non-detachably, allows particularly simple and good recycling. This further allows, for example, the individual components of the midsole to be repaired, customized, for example from a technical and / or visual point of view, and also to be transported or stored in a space-saving manner. The midsole is modular.

[0031] The midsole may also be integrally formed, in particular may consist of one element, in particular may consist of only one element.

[0032] The penetration resistance means, in particular a textile penetration resistance means, may be part of the midsole or may be a separate element. The penetration resistance may in particular be connected to the shoe, in particular to the inner shoe. In particular it may be connected to the bottom surface of the upper, in particular by means of a Strobel stitch.

[0033] The at least one connection element is preferably at least partially disposed within / on the midsole component.

[0034] Advantageously, at least one connecting element extends at least between adjacently arranged midsole parts, which at least one connecting element is accordingly arranged on / in the adjacently arranged midsole parts and preferably projects / projects beyond them.

[0035] Advantageously, each connecting element connects all of the midsole parts to one another. This midsole is particularly easy to mount and to manufacture. Preferably, there is only one connecting element.

[0036] The at least one connecting element is preferably arranged, in particular completely, inside the midsole part, which results in a particularly stable or load-bearing midsole.

[0037] At least one connecting element preferably provides penetration resistance. This midsole provides a particularly high level of protection for the wearer of the shoe. It is extremely safe.

[0038] It is advantageous if at least one connecting element is sole-shaped, which allows for a particularly secure connection between the midsole parts, which is particularly load-bearing, and which also provides a very high wearing comfort.

[0039] The midsole components are preferably originally formed separately from one another and may differ, for example, in shape, function, material and / or hardness.

[0040] It is advantageous if the midsole part is plugged into at least one connecting element. This midsole is particularly easily recyclable and particularly easy to disassemble again.

[0041] The at least one connecting element is preferably injection-molded into the midsole part, which is preferably at least partially wetted beforehand with a release agent, which midsole can be produced particularly well and efficiently by machine.

[0042] Advantageously, each midsole part has at least one connecting element receiving portion in which the respective at least one connecting element is accommodated.

[0043] The respective connecting element receptacles and the connecting elements accommodated therein preferably at least partially correspond to one another. This configuration also results in a midsole that is particularly capable of withstanding loads.

[0044] The midsole is advantageously composed of a front midsole part and a rear midsole part, and advantageously further comprises at least one intermediate midsole part.

[0045] The midsole preferably comprises a toe cap disposed on the front midsole part. The front midsole part and the toe cap are, for example, integrally connected to each other. They are removably or non-removably connected to each other.

[0046] The front midsole part is preferably formed by injection molding and the toe cap is integrally molded, particularly using a release agent. This midsole is particularly economical to manufacture. The toe cap is, for example, molded onto or into the front midsole part.

[0047] Advantageously, the protective shoe comprises an upper for receiving the foot of a person wearing the shoe, and a sole structure connected to the upper and latchably connected to the upper by at least one first latch mechanism in the assembled state of the protective shoe.

[0048] The protective shoe preferably comprises an upper for accommodating the foot of a person wearing the shoe, a sole structure connected to the upper when the protective shoe is in an assembled state, and further a toe cap latchably connected to the upper by at least one second latch mechanism when the protective shoe is in an assembled state.

[0049] It has been found that for protective shoes, both the latch mechanism or the latch connection allows a secure, particularly low / free-play connection between the individual components of the protective shoe and also allows re-attachment and detachment from one another, which allows for example a simple separate recycling of the components. In particular, this allows identical components or materials to be recycled again and secondary materials can be recovered. An efficient use of materials is ensured. Individual components of the protective shoe can be repaired, customized in technical and / or visual terms and transported or stored in a space-saving manner.

[0050] Advantageously, the at least one first latch mechanism comprises at least one latch means disposed or formed on or in the upper and at least one mating latch means disposed or formed on or in the sole structure, which preferably complement each other and preferably interact with each other in the latch connection, in particular are connected in a form-fitting manner, although the reverse arrangement is also possible.

[0051] The at least one second latch mechanism preferably comprises at least one latch means disposed or formed on or in the upper and at least one mating latch means disposed or formed on or in the toe cap, which preferably complement each other and preferably interact with each other, in particular form-fittingly connected, in a latching connection, although the reverse arrangement is also possible.

[0052] The at least one first latch mechanism is preferably located at the front, mid and / or rear region of the protective shoe. The at least one first latch mechanism may, for example, be located at the toe, mid and / or heel region of the protective shoe.

[0053] Advantageously, at least one first latch mechanism forms a latch connection between the midsole and the upper of the sole structure, which on the one hand allows a secure connection between the midsole and the upper, but on the other hand also allows the midsole and the upper to be separated from each other.

[0054] Advantageously, the at least one first latch mechanism has at least one first latch surface, which in the assembled state of the protective shoe extends on the medial side of the upper adjacent to at least one mating latch surface of the midsole. This design results in a protective shoe that allows a highly visually appealing and functionally reliable latch connection between the sole structure and the upper due to the at least one medial first latch surface. The at least one first latch surface is preferably spatially delimited laterally outward, i.e. away from the foot space of the protective shoe. Advantageously, it is not spatially delimited or is open laterally inward, i.e. towards the foot space. For example, there are a plurality of first latch surfaces that extend at intervals, diagonally, vertically and / or offset with respect to each other. The at least one first latch surface and the mating latch surface of the midsole are preferably in at least partial, preferably extensive, contact in the assembled state of the protective shoe.

[0055] The at least one first latch surface preferably faces at least partially downward.

[0056] Advantageously, the at least one first latch surface extends around at least 60%, preferably at least 70%, preferably at least 80%, preferably at least 90% of the upper. The at least one first latch surface surrounds or encloses the upper at least partially or in a specific area. It is preferably endless and preferably completely surrounds / encloses the foot space. Advantageously, the at least one first latch surface always faces downwards, i.e. in the assembled state of the protective shoe, it faces towards the outsole.

[0057] At least one first latch surface is preferably assigned at least one installation insertion aid. With the at least one installation insertion aid, a particularly simple and reliable installation or assembly of the protective shoe is obtained. It is formed, for example, by at least one side surface, surface, etc., which extends from the upper part towards the inside, for example in a straight or curved manner, towards the foot space. The at least one installation insertion aid is preferably arranged above and adjacent to the at least one first latch surface. In particular, the sole structure or midsole can be installed or inserted easily in this way.

[0058] The protective shoe preferably comprises an outer shell which at least partially surrounds the midsole and at least partially forms the upper. The outer shell preferably forms the outsole. It preferably forms (also) the upper. Such a protective shoe offers the wearer particularly high protection, such as against the ingress of liquids.

[0059] Conveniently, the at least one first latch surface is formed on the outer shell.

[0060] The at least one second latch mechanism preferably has at least one second latch surface, which extends on the medial side of the upper adjacent to at least one mating latch surface of the toe cap. This design results in a protective shoe that is visually very attractive due to the at least one medial second latch surface and allows a functionally reliable latch connection between the toe cap and the upper. The at least one second latch surface is preferably spatially separated laterally outward, i.e. away from the foot space of the protective shoe. Advantageously, it is not spatially separated or is open laterally inward, i.e. towards the foot space. For example, there are a plurality of second latch surfaces that extend at intervals, diagonally, vertically and / or offset with respect to each other. The at least one second latch surface and the mating latch surface of the toe cap are preferably in at least partial, preferably extensive, contact in the assembled state of the protective shoe.

[0061] Advantageously, the at least one second latch surface faces at least partially forward. The at least one second latch surface faces towards the tip or toe area of ​​the protective shoe. It preferably faces exclusively forward.

[0062] The at least one second latch surface is preferably formed at least in the instep region of the upper, such that the at least one second latch surface is located, for example, in a front vamp of the protective shoe.

[0063] The at least one second latch surface conveniently abuts the sole structure laterally in the assembled condition of the protective shoe.

[0064] The at least one second latch surface preferably extends in an arc, for example the at least one second latch surface may be (substantially) U-shaped, in the shape of a circular arc, etc.

[0065] Advantageously, at least one second latch surface is formed on the outer shell of the protective shoe.

[0066] The protective footwear preferably comprises at least one connection and indicator, which indicates the intact state of the protective footwear in the original, integrated state and indicates the disassembled state of the protective footwear when the protective footwear is at least partially disassembled. It has been found that the at least one connection and indicator makes it possible to indicate the intact state of the protective footwear, whereby it is possible, for example, to identify that the protective footwear is in its original state, i.e. intact or unaltered. The protective footwear can be dismantled or disassembled, in particular for the purpose of recycling.

[0067] At least one of the connections and the indicators may be manufactured mechanically or manually.

[0068] Advantageously, the at least one connection and indicator is in the form of a seam, in particular a sealing seam. This at least one connection and indicator is produced, for example, under pressure and / or heat. It preferably forms a welded connection or a welded seam. The at least one connection and indicator can be produced quickly and economically, in particular by machine. Alternatively, it is produced, for example, by sewing.

[0069] At least one of the connections and indicators preferably at least partially splits open upon disassembly, allowing an easily, clearly identifiable and functionally reliable indication of at least partial disassembly of the protective shoe, which indication is preferably irreversible.

[0070] Advantageously, the at least one connection and indicator is elongated. This at least one connection and indicator further allows an easily, clearly identifiable and functionally reliable indication of at least partial disassembly of the protective shoe. The connection established by the at least one connection and indicator is functionally reliable and can withstand loads.

[0071] The at least one connection and indicator is preferably arranged on the inner shoe and / or on the outer shell of the protective shoe. It preferably connects the inner shoe and the outer shell of the protective shoe to each other in a fixed but detachable manner, preferably in their original and integral state. Advantageously, the at least one connection and indicator indicates the removal of the toe cap, the inner shoe, the midsole of the sole structure and / or the unit consisting of the toe cap and the midsole. When dismantling the protective shoe, it is preferably necessary to dismantle the inner shoe first. Only afterwards can further components of the protective shoe be dismantled. The at least one connection and indicator preferably indicates the dismantling of the protective shoe at the same time that the inner shoe is dismantled.

[0072] The protective shoe preferably has at least one first connection and indicator located adjacent to the toe cap in the upper region of the protective shoe. Advantageously, the at least one first connection and indicator is located at a distance from the toe cap. Advantageously, the at least one first connection and indicator is located in the upper region between the toe cap and the closure. The at least one first connection and indicator can be easily identified from the outside, for example by the wearer of the shoe or by another person.

[0073] The protective shoe preferably has at least one second connection and indicator located in a rear region of the protective shoe, the at least one second connection and indicator preferably located adjacent to an upper free end of the upper, the at least one first connection and indicator being easily identifiable from the outside, for example, by the wearer of the shoe or by another person.

[0074] It is advantageous if different uppers can be used. The protective footwear can be designed in various ways. It is preferable to have the same sole structure as a basis. This allows a particularly economical production and is easy to handle.

[0075] A preferred embodiment of the protective shoe of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which: FIG. [Brief description of the drawings]

[0076] [Figure 1] 1 is a side view of the protective shoe of the present invention in an assembled state. [Diagram 2] FIG. 2 is an exploded view of the protective shoe shown in FIG. [Diagram 3] FIG. 3 shows the midsole of the protective shoe depicted in FIGS. 1 and 2, which is also shown in FIG. [Figure 4] FIG. 3 shows the protective shoe depicted in FIGS. 1 and 2 in a partially cut-open state. [Diagram 5] FIG. 2 is a longitudinal cross-sectional view of the protective shoe shown without the inner shoe. [Figure 6] FIG. 6 is an enlarged view of the detail VI marked in FIG. 5. [Figure 7] FIG. 7 is an enlarged view of the detail VII marked in FIG. 5 . [Figure 8] 2 is a partial cross-sectional view of an outer shell of the illustrated protective shoe. FIG. [Figure 9] 1 is a partial cut-away view (part 1) of the illustrated protective shoe showing attachment of the midsole. [Figure 10] 2 is a second partial cut-away view of the illustrated protective shoe showing attachment of the midsole; [Figure 11] 1 is a plan view of the front area of ​​the outer shell of the illustrated protective shoe, showing connections and indicators. [Figure 12] 1 is a cross-sectional view of a protective shoe, showing the inner shoe and also the connection and display parts. [Figure 13] FIG. 13 is a view corresponding to FIG. 12 and showing the inner shoe disassembled. [Figure 14] FIG. 1 is a perspective view (part 1) of an alternative outer shell for the illustrated protective shoe. [Figure 15] FIG. 2 is a perspective view (part 2) of an alternative outer shell for the illustrated protective shoe. [Figure 16] FIG. 3 is a perspective view (part 3) of an alternative outer shell for the illustrated protective shoe. [Figure 17]FIG. 4 is a perspective view (part 4) of an alternative outer shell for the illustrated protective shoe. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0077] First, referring particularly to Figures 1, 2, 4, 10, 12 and 13, the protective shoe in an assembled state generally comprises a midsole 1, a toe cap 2 disposed on the midsole 1, and an outer shell 3 in which the midsole 1 and the toe cap 2 are housed or accommodated. The protective shoe further comprises an inner shoe 4, which is received in the outer shell 3 in the assembled state of the protective shoe and supported at an upper part opposite to the midsole 1. The inner shoe 4 defines a foot (receiving) space of the protective shoe. The inner shoe 4 is preferably flexible.

[0078] The protective shoe has an elongated shape and extends along a longitudinal direction L. At the front it has a toe 5 which is adjacent to a toe region 6 of the protective shoe. In turn adjacent to the toe region 6 is an instep region 7 of the protective shoe. Opposite the toe 5 the protective shoe has a heel region 8.

[0079] The midsole 1 has a multi-part shape (see in particular Figures 2 and 3) and preferably has a cushioning design. The midsole 1 is subdivided in the longitudinal direction L into three midsole parts, in particular a front midsole part 9, a middle midsole part 10 and a rear midsole part 11. The midsole parts 9, 10, 11 are originally formed separately, separate from one another, i.e. before assembly of the protective shoe or before assembly of the midsole 1. They have different shapes, in particular widths and / or thicknesses, and are preferably correspondingly adapted to the foot (not shown) of the wearer of the shoe. For example, they have different hardnesses or are made of different materials.

[0080] The front midsole part 9 is preferably rounded at the front. The front midsole part 9 is preferably (substantially) flat at its opposite / rear. The rear midsole part 11 is preferably rounded at the rear. The rear midsole part 11 is preferably flat at its opposite / front. The middle midsole part 10 is preferably flat at both the front and rear. The number of midsole parts 9, 10, 11 may also be another number, such as two, four, five, etc.

[0081] The midsole parts 9, 10, 11 are connected to one another, for example removably or non-removably, by a single shared connecting element 12. The connecting element 12 is flat and thin. It advantageously has a shape like a shoe sole. The connecting element 12 is preferably rigid, for example puncture-resistant. The connecting element 12 has a width that varies perpendicularly to the longitudinal direction L. The connecting element 12 is, for example, at least partially wider at the front than at the rear. It is preferably rounded at the front and rear. Advantageously, the connecting element 12 has a uniform thickness.

[0082] Each midsole component 9, 10, 11 has a connecting element receptacle. The front midsole component 9 is formed with a front connecting element receptacle 13, and the middle midsole component 10 is formed with a middle connecting element receptacle 14. The rear connecting element receptacle 15 is formed in the rear midsole component 11.

[0083] Each connecting element receiving portion 13, 14, 15 is slot-shaped and spatially delimited upwardly and downwardly as well as laterally outwardly perpendicular to the longitudinal direction L. Each connecting element receiving portion 13, 14, 15 has a height that (substantially) corresponds to the thickness of the connecting element 12.

[0084] The front connecting element receiving portion 13 is further spatially delimited at the front and opens towards the rear, i.e. towards the intermediate midsole component 10, or towards the intermediate connecting element receiving portion 14.

[0085] The rear connection element receptacle 15 is spatially delimited rearwardly and opens toward the front, i.e. toward the middle midsole part 10, i.e. toward the intermediate connection element receptacle 14.

[0086] The intermediate connecting element receptacle 14 is open both forward, i.e. towards the front midsole part 9 or towards the front connecting element receptacle 13, and rearward, i.e. towards the rear midsole part 11 or towards the rear connecting element receptacle 15. It is continuous in the longitudinal direction L.

[0087] The openings facing each other of adjacently arranged connecting element receptacles 13, 14, 15 are at the same height and preferably have the same width in the assembled state of the midsole 1. They extend adjacent to each other and are aligned with each other.

[0088] In the assembled state of the midsole 1, the connecting element 12 engages in the front connecting element receptacle 13 and in the rear connecting element receptacle 15. The connecting element 12 passes through the middle connecting element receptacle 14 and accordingly projects on both sides. The midsole parts 9, 10, 11 are, for example, screwed or plugged into the connecting element 12.

[0089] In the assembled state of the midsole 1, the connecting element 12 preferably bears laterally outwardly against the respective midsole parts 9, 10 and 11 at least partially in the respective connecting element receptacles 13, 14 and 15. The connecting element 12 advantageously bears at the front against the front midsole part 9 at least partially in the front connecting element receptacle 13 and at the rear against the rear midsole part 11 in the rear connecting element receptacle 15. The connecting element 12 also preferably bears at least partially at the top and bottom against each midsole part 9, 10, 11.

[0090] In the assembled state of the midsole 1, the front midsole part 9 and the intermediate midsole part 10 furthermore bear against one another, particularly over a large area, and the intermediate midsole part 10 and the rear midsole part 11 then likewise bear against one another, particularly over a large area.

[0091] The midsole parts 9, 10, 11 are fixed or joined to one another in the vertical, i.e. top-to-bottom, and laterally, i.e. side-to-side, directions by means of connecting elements 12. They are also preferably held rigidly to one another and fixed to one another in the longitudinal direction L.

[0092] For example, the connecting element 12 is at least partially wetted with a release agent to allow the midsole parts 9 , 10 , 11 to be detached from one another or from the connecting element 12 .

[0093] According to a preferred embodiment, the connection element 12 is injection molded into the midsole components 9, 10, 11. Alternatively, it is encapsulated with the midsole components by injection molding to form the midsole components 9, 10, 11.

[0094] The midsole 1 has, around its edge, an outer edge 17 which projects upwards from the upwardly facing sole face 16 and which is peripherally closed and therefore endless in the assembled state of the midsole 1. The outer edge 17 has an upwardly facing free upper surface 18. Each midsole part 9, 10, 11 has at least one corresponding partial outer edge.

[0095] The toe cap 2 is arranged on top and in front of the front midsole part 9. It is rigid. The toe cap 2 is closed towards the front, upward and sides. It is open towards the rear. For example, the toe cap 2 is directly injection moulded onto the front midsole part 9. For example, the toe cap 2 is at least partially wetted with a release agent before the injection moulding operation so that the toe cap 2 and the front midsole part 9 can be separated later. As an alternative, the toe cap 2 and the front midsole part 9 are inde-removably connected to each other. As an alternative, the toe cap 2 is originally designed separately and arranged on the front midsole part 9 accordingly.

[0096] In the assembled state of the protective shoe, the inner shoe 4 engages with the toe cap 2 from the rear. The inner shoe 4 is supported at the top with its inner shoe sole facing the sole surface 16. The outer edge 17 completely surrounds or encloses the inner shoe 4 at the bottom and also to the sides. The outer edge 17 at least partially abuts the inner shoe 4. The inner shoe 4 is thus spatially fixed in the longitudinal and lateral directions relative to the midsole 1.

[0097] In the assembled state of the protective shoe, the inner shoe 4 together with the midsole 1 and the toe cap 2 is surrounded by the outer shell 3, which forms an outer skin. The inner shoe 4 and the outer shell 3 are at least partially in contact with each other.

[0098] The bottom outer shell 3 forms an outsole 19, which is in direct contact with the floor or ground (not shown) when the protective shoe is worn by the shoe wearer and ensures a sufficient grip. In the assembled state of the protective shoe, the outsole 19 extends over the entire midsole 1 on the bottom surface and has, for example, a profile at the bottom. Advantageously, the outsole 19 is slip-resistant, heat-resistant, flexible under low temperature conditions, cold-resistant, cut-resistant and / or antistatic. Advantageously, it is highly abrasion-resistant. The midsole 1 and the outsole 19 form the sole structure of the protective shoe.

[0099] The outer shell 3 further comprises / forms a sole outer wall 20 which adjoins the upper part of the outsole 19 around its edge and which, in the assembled state of the protective shoe, completely surrounds the midsole 1 around its periphery or laterally. The sole outer wall 20 and the midsole 1 are at least partially in contact with each other. Between the outsole 19 and the sole outer wall 20 there is for example an angle of 85° to 95°.

[0100] The outer shell 3 further comprises an upper exterior material 21 adjacent to the upper of the outer sole wall 20 and at least partially surrounding the periphery of the inner shoe 4 in the assembled state of the protective shoe. The upper exterior material 21 and the inner shoe 4 are at least partially in contact with each other. The inner shoe 4 is, for example, higher than the upper exterior material 21. The upper exterior material 21 and / or the inner shoe 4 form the upper of the protective shoe.

[0101] A closure 22 is arranged on the upper covering 21 in the instep region 7. The closure 22 is in the form of an eyelet arrangement with a number of eyelets for lacing the protective shoe. Other closures, such as hook and loop closures, may alternatively be used.

[0102] In the assembled state of the protective shoe, the outer shell 3 has, on its inner side adjacent to the upper surface 18 of the midsole 1, in particular a single, downwardly facing, free first latch surface 23 (FIGS. 4, 5 and 6), which is therefore arranged in the transition area between the sole outer wall 20 and the cladding 21 of the upper. The first latch surface 23 is closed at its periphery and therefore endless. It is arranged at a distance from the outsole 19 and faces towards it. The first latch surface 23 forms an angle with the sole outer wall 20 of, for example, between 80° and 100°.

[0103] The upper surface 18 forms a mating latching surface for the first latching surface 23 .

[0104] The outer shell 3 or upper sheath 21 has, on the inner side adjacent to the upper latch surface 23, a mounting insertion aid 32 which is peripherally closed and endless like the first latch surface 23. The mounting insertion aid 32 extends along the entire first latch surface 23. In the region of the mounting insertion aid 32, the upper sheath 21 thickens continuously from top to bottom, forming the first latch surface 23 and forming an insertion bevel. The insertion bevel protrudes from the top to the inner side. The first latch surface 23 is not spatially delimited laterally inwards, i.e. towards the inner shoe 4 or foot space. It is spatially delimited laterally outwards, i.e. away from the inner shoe 4 or foot space.

[0105] The upper covering 21 further has in particular a single free second latch surface 24 (FIGS. 5 and 7), which faces forward and extends in an arc. In the assembled state of the protective shoe, the second latch surface 24 is adjacent to and continuous with the upper surface of the midsole 1, in particular with its upper surface 18. It projects medially and is not spatially delimited medially, i.e. towards the inner shoe 4 or foot space. The upper is spatially delimited laterally outward, i.e. away from the inner shoe 4 or foot space. The upper covering 21 is thinner in the region of the toe cap 2 than behind it.

[0106] The free end of the toe cap 2, i.e. the rear edge 25 away from the toe 5, forms a mating latching surface against the second latching surface 24.

[0107] In the upper region 7, the protective shoe further comprises a first sealing seam portion 26 (Figs. 1, 11, 12 and 13) which, in the assembled state of the protective shoe, extends in its width direction between the closure 22 and the toe cap 2. The first sealing seam portion 26 comprises two substantially parallel elongated sealing seams and forms a fixed but removable or breakable connection between the outer shell 3 and the inner shoe 4, which is visible from the outside. This sealing seam portion 26 forms a connection and indicator.

[0108] The protective shoe also has a second sealing seam portion 27 (Figures 1, 12 and 13) which is formed (substantially) similarly to the first sealing seam portion 26. The second sealing seam portion 27 is located at the top of the heel area 8 of the protective shoe and extends therefrom around the periphery. It also forms a fixed but removable or breakable connection between the outer shell 3 and the inner shoe 4. It is visible from the outside. It forms a connection and an indicator.

[0109] The assembly of the protective footwear is described in detail below.

[0110] As shown in FIG. 9, in the assembled state, the midsole 1, in the form of a unit including the toe cap 2, is manually or automatically inserted from above into the inner space 29 of the outer shell 3 through the upper opening 28 of the outer shell. This is done by leading the front midsole part 9. The sole surface 16 or the upper surface 18 faces upwards. The midsole 1 is guided in the front side so that its upper surface 18 engages under the first latch surface 23. In this case, the midsole 1 is preferably inclined downwards toward the front.

[0111] When the upper surface 18 engages under the first latch surface 23 at the front, the unit formed by the midsole 1 and the toe cap 2 is displaced or pivoted downwards at the rear so that it also approaches the outsole 19 there.

[0112] In this process, the outer shell 3 is pressed laterally outward, for example all around, by the midsole 1 with the aid of the pre-arranged mounting insertion aid 32 adjacent to the first latching surface 23. As soon as the midsole 1 goes under the first latching surface 23, the first latching surface 23 latches or springs up onto the upper surface 18 and forms a mating latching surface. The first latching surface 23 then engages and rests on the upper surface 18. They at least partially abut each other extensively. The outer shell 3 and the midsole 1 are connected to each other in a latching or snapping manner. The midsole 1 is in particular fixed upwards by this latching connection. The midsole 1 at least partially abuts against the inner side of the outer sole wall 20 of the outer shell 3. The midsole 1 rests at least partially on the outsole 19.

[0113] When the unit consisting of the midsole 1 and the toe cap 2 is inserted, the toe cap 2 presses laterally outwards and upwards against the outer shell 3 or upper cladding 21 adjacent to the second latching surface 24. As soon as the toe cap 2 passes the second latching surface 24, the second latching surface 24 latches or springs up over the edge 25 of the toe cap 2, forming a mating latching surface. They at least partially abut against each other extensively. The outer shell 3 and the toe cap 2 are latched or snapped together. The toe cap 2 and the midsole 1 are fixed by this latching connection, in particular backwards towards the heel region 8. The toe cap 2 at least partially abuts against the inside of the upper cladding 21 of the outer shell 3.

[0114] The front midsole component 9 is located in the toe region 6 of the protective shoe together with the toe cap 2. The rear midsole component 11 is located in the heel region 8 of the protective shoe. The middle midsole component 10 is located therebetween.

[0115] Next, the first and second sealing seams 26, 27 are made. The sealing seams 26, 27 respectively establish a fixed but removable seam connection between the outer shell 3, or the upper covering 21, and the innershoe 4, by means of which the innershoe 4 is spatially fixed within the outer shell 3. They are each in particular directly connected to both the outer shell 3 and the innershoe 4.

[0116] The inner shoe 4 is then inserted. Alternatively, the inner shoe 4 is inserted together with the unit consisting of the midsole 1 and the toe cap 2.

[0117] The shoe wearer can use the protective shoe normally: the toe engages the toe cap 2 from behind and is located in the toe region 6 of the protective shoe, and the heel is located in the heel region 8 of the protective shoe.

[0118] When dismantling the footwear, the inner shoe 4 is first removed from the outer shell 3. During this process, the sealing seams 26, 27 are torn and destroyed (FIG. 13). These therefore indicate dismantling of the footwear and are visible from the outside. The footwear loses its conformity and warranty and is identifiable or marked accordingly.

[0119] The unit made up of the midsole 1 and the toe cap 2 can then be removed from the outer shell 3. For this purpose, the latch connection is released, for example manually, in particular by lifting the mutually assigned latch faces 23, 24 and the mating latch faces 18, 25, respectively, in particular by applying a corresponding external force or by moving them relative to one another.

[0120] If so designed, the midsole parts 9, 10, 11 can be separated from one another. When the midsole parts 9, 10, 11 are separated from one another, the connecting element 12 is released again.

[0121] Thus, the inner shoe 4 can be recycled separately. The outer shell 3 can also be recycled separately. The midsole components 9, 10, 11 can also be recycled separately or together. The connection element 12 can also be recycled separately.

[0122] As illustrated in Figures 14 to 17, the outer shell 3 may be of different designs.

[0123] According to figure 14, the outer shell 3 is closed in the area of ​​the upper, which is for example injection moulded from TPU (thermoplastic polyurethane) and has excellent waterproof properties.

[0124] According to Figure 15, the outer shell 3 has a number of windows 30 in the region of the upper. The windows are closed by at least one interwoven fabric layer 31. The at least one interwoven fabric layer 31, like the rest of the outer shell 3, preferably consists of TPU.

[0125] According to Fig. 16, the outer shell 3 is perforated to form windows 30 in the region of the upper. The perforations are, for example, smaller and / or larger than the openings of the at least one interwoven fabric layer 31. They have, for example, different sizes and / or shapes.

[0126] According to FIG. 17, the outer shell 3 comprises, over the entire area of ​​the upper, an interwoven textile, for example made of TPU.

[0127] The terms "fore", "rear", "back", "top", "bottom" etc. used herein refer to the protective shoe where the sole structure is placed on a floor surface or worn as intended by a wearer. The toe region 6, or toe 5, is conventionally located, for example, at the front. The heel region 8 is located, for example, at the rear. The outsole 19 is located at the bottom. [Explanation of symbols]

[0128] 1 Midsole 2 Tip Cap 3 Outer Shell 4 Inner shoes 5 Toe 6 Ahead area 7 Instep area 8. Heel Area 9. Front midsole part 10. Midsole parts 11 Rear midsole assembly 12 Connection elements 13 Front connecting element receptacle 14 Intermediate connecting element receiving portion 15 Rear connection element receptacle 16 Sole surface 17 Outer edge 18 Mating latch surface 19 Outsole 20 Sole Outer Wall 21 Exterior materials 22 Obturator 23 First latch surface 24 Second Latch Surface 25 Mating latch surface 26 First sealing seam part 27 Second sealing seam part 28 Top opening 29 Interior Space 30 Windows 31 Fabric 32 Installation and insertion aid L Longitudinal

Claims

1. Protective footwear, a) an upper for accommodating the foot of a person wearing the shoe; b) a sole structure (1, 19) connected to said upper; c) a toe cap (2); d) at least one connection and display unit (26, 27), The at least one connection and display unit (26, 27) (i) Demonstrate the integrity of the protective footwear in its original, unified state; and (ii) a protective shoe, the protective shoe being indicative of disassembly when the protective shoe is at least partially disassembled;

2. 2. Protective shoe according to claim 1, characterized in that the at least one connection and indicator (26, 27) is formed as a seam.

3. 2. Protective shoe according to claim 1, characterized in that the at least one connection and indicator (26, 27) at least partially tears open when the shoe is disassembled.

4. 2. Protective footwear according to claim 1, characterized in that the at least one connection and indicator part (26, 27) is elongated.

5. 2. Protective shoe according to claim 1, characterized in that the at least one connection and indicator (26, 27) is arranged on the inner shoe (4) and / or on the outer shell (3) of the protective shoe.

6. 2. Protective shoe according to claim 1, characterized in that in the original integrated state, the at least one connection and indicator part (26, 27) fixedly but detachably connects the inner shoe (4) and the outer shell (3) of the protective shoe to each other.

7. 2. The protective shoe according to claim 1, characterized in that the at least one connection and indicator (26, 27) indicates the removal of the toe cap (2), the inner shoe (4), the midsole (1) of the sole structure, and / or the unit consisting of the toe cap (2) and the midsole (1).

8. 2. The protective shoe according to claim 1, characterized in that it comprises at least one first connection and indicator (26) arranged adjacent to the toe cap (2) in the upper region (7) of the protective shoe.

9. 9. Protective shoe according to claim 8, characterized in that the at least one first connection and indicator (26, 27) is spaced apart from the toe cap (2).

10. 10. Protective footwear according to claim 8 or 9, characterized in that the at least one first connection and indicator (26) is arranged in the upper region (7) between the toe cap (2) and the closure (22).

11. 2. Protective shoe according to claim 1, characterized in that it comprises at least one second connection and indicator (27) arranged in the rear region (8) of the protective shoe.

12. 12. Protective footwear according to claim 11, characterized in that the at least one second connection and indicator (27) is arranged adjacent to an upper free end of the upper.

13. 2. Protective footwear according to claim 1, characterized in that different uppers are available.

14. 2. Protective footwear according to claim 1, characterized in that the at least one connection and indicator (26, 27) is formed as a sealing means.

15. 2. Protective footwear according to claim 1, characterized in that the at least one connection and indicator (26, 27) is formed as a sealing seam.

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