Sandal Having Detachable Strap Fastening

Abstract

A sandal having a detachable strap fastening, comprising a sole, at least one strap and at least one cam buckle and/or at least one anchor buckle. The sandal is modularly constructed and can be easily assembled and disassembled. The sole and the at least one strap are connected to each other by guiding the at least one strap through apertures provided in the sole. The two ends of the at least one strap are either fastened to the strap again by means of at least one of the cam buckles so as to form a loop or are anchored to one of the apertures by means of at least one of the anchor buckles, wherein the fastening of at least one cam buckle and/or the at least one anchor buckle is effective by friction-locking and they can be opened manually after closing and can be detached from the strap.

Claims

1. A sandal having detachable strap fastening, comprising a sole (1), at least one strap (2), and according to a first embodiment at least two cam buckles (4) or according to a second embodiment at least two anchor buckles (3), or according to a third embodiment a combination of at least one cam buckle (4) and at least one anchor buckle (3), in which the sandal is modularly constructed and can be easily assembled and disassembled, in which the sole (1) and the at least one strap (2) are connected to each other by guiding the at least one strap (2) through apertures (5) in the sole (1), and that the ends of the at least one strap (2), are either secured to the strap (2) by means of the at least one cam buckle (4) so as to form a loop or are anchored to one of the aperture (5) by at least one anchor buckle (3), characterized in that the at least one cam buckle (4) and the at least one anchor buckle (3) function by friction-locking and can be opened manually after closing and are detachable from the at least one strap (2).

2. The sandal according to claim 1, wherein the at least one cam buckle (4) is configured to secure a turned-over end of the at least one strap (2) to the strap (2) so as to form a loop around one of the aperture (5) and thereby fix the strap (2) to the sole (1).

3. The sandal according to claim 2, wherein the at least one cam buckle (4) is configured to be slidable with opened long clamping lever (8) and thus allows the shortening and lengthening of the used strap length in order to allow a flexible adaptation to the foot.

4. The sandal according to claim 1, wherein the at least one anchor buckle (3) is configured to be fastened to at the at least one strap (2) end, thus preventing the at least one strap (2) from slipping through the aperture (5) and affixing the at least one strap (2) to the sole (1).

5. The sandal according to claim 1, wherein the apertures (5) integrated in the sole (1) are designed as an eyelet, slit, incision, hole or formed loop.

6. The sandal according to claim 1, wherein the sole (1) consists of only one component and the cushioning property is created by the constructional elasticity of a 3D structure.

7. The sandal according to claim 1, wherein the sole (1) is made of two sub-components connected to each other, wherein a softer sub-component (6) both acts as the cushion and forms the footbed, and a harder sub-component (7) at the outer edge of the sole (1) forms and/or reinforces the apertures (5) subjected to tensile stress.

8. The sandal according to claim 7, wherein the softer sole sub-component (6) realizes its cushioning function via a foamed structure.

9. The sandal according to claim 7, wherein the sole (1) is produced in a 2K-injection molding process, wherein both sub-components (6, 7) are formed from the same polymer and can thus also be recycled as a whole.

10. The sandal according to claim 7, wherein the sole (1) is made of two sub-components (6, 7) joined together by an adhesive, wherein it is provided that both sub-components can be separated from each other by a simple process and recycled individually.

11. The sandal according to claim 10, wherein at least one of the sub-components (6, 7) consists of a biodegradable polymer.

12. The sandal according to claim 7, wherein the harder sub-component (7), in addition to the formation of the apertures (5), is additionally formed at least partially as an undersole and thus additionally ensures abrasion resistance and puncture resistance.

13. The sandal according to claim 1, wherein the at least one strap (2) is made of biodegradable single-variety raw material and is compostable.

14. The sandal according to claim 1, wherein the at least one cam buckle (4) and/or the at least one anchor buckle (3) are made of the same single-variety material.

15. A kit for a sandal according to claim 1, wherein the kit comprises a sole (1), at least one strap (2), and according to a first embodiment at least two cam buckles (4) or according to a second embodiment at least two anchor buckles (3), or according to a third embodiment a combination of at least one cam buckle (4) and at least one anchor buckle (3), which can be assembled and disassembled without tools, wherein the two ends of the at least one strap (2), which form two strap ends, can either be fastened to the strap (2) by means of at least one of the cam buckles (4) so as to form a loop or can be anchored to one of the apertures (5) by means of at least one of the anchor buckles (3), characterized in that the at least one cam buckle (4) and the at least one anchor buckle (3) function by friction-locking and can be opened manually after closing and are detachable from the at least one strap (2).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Possible embodiment examples of the invention are explained using FIGS. 1, 2, 3, 4, 5 and 6. In the figures:

[0043] FIG. 1: is a schematic perspective view of an embodiment of all individual components of the sandal;

[0044] FIG. 2: is a schematic perspective view of an embodiment of a fully assembled sandal; and

[0045] FIG. 3: is a side view of a fully assembled sandal in an embodiment with a sole made of two sub-components and the strap end fixation with one slidable cam buckle each;

[0046] FIG. 4: is a schematic perspective view of a slidable cam buckle with two open clamping levers;

[0047] FIG. 5: is a schematic perspective view of a slidable cam buckle with an open long clamping lever and a strap end affixed by the short clamping lever;

[0048] FIG. 6: is a schematic perspective view of a slidable cam buckle with a strap end affixed by the short clamping lever and the strap building a loop and being guided through under the open long clamping lever.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0049] FIG. 1 schematically shows an embodiment example of the sandal in which it is disassembled into its individual components, i.e. is available as a kit. Said kit comprises a sole 1 with the integrated apertures 5, a strap 2, a simple anchor buckle 3 and a cam buckle 4 with an open long clamping lever 8

[0050] FIG. 2 shows the same embodiment example in the assembled state. Here the strap 2 is guided through all apertures 5 and anchored at one end with the simple anchor buckle 3 to one of the apertures 5 and with the other end, after passing through another one of the apertures 5, turned over and fastened to the strap 2 with the cam buckle 4.

[0051] FIG. 3 shows a fully assembled embodiment example where the sole 1 consists of a softer sub-component 6 for cushioning and shaping the footbed and a harder sub-component 7, both forming the apertures 5 and shaping the outsole to provide abrasion resistance and puncture resistance. For each sandal, right and left, there is only one strap 2 used each. Both ends of the strap 2 are guided through apertures 5 and are folded back to be attached by a slidable cam buckle 4 each. In this embodiment there are two cam buckles 4 used for one of the soles 1, right or left. The cam buckles 4 are designed with two clamping levers, while in each case the strap end is fastened to one of the clamping levers and, after building the loop through the aperture 5, the strap 2 is guided under the opened second clamping lever and afterwards securely locked at a designated position. In this embodiment it is possible to adjust the strap fastening to the size and shape of the user's foot via the two slidable cam buckles 4.

[0052] FIG. 4 shows a slidable cam buckle 4 with two clamping levers 8 and 9. Both clamping levers 8 and 9 are in an open state. The cam buckle 4 is ready to be used to compose a sandal or in case of its end of use it is ready to be recycled, consisting of three sub-components all made of the same material and thus building a buckle of single-variety.

[0053] FIG. 5 shows the same slidable cam buckle 4 as shown in FIG. 4 additionally having a strap 2 attached to the short clamping lever 9, which is closed. The long clamping lever 8 is in an open state.

[0054] FIG. 6 shows the same slidable cam buckle 4 as shown in FIG. 5 with the one end of the strap 2 affixed by the short clamping lever 9 and additionally guided under the open long clamping lever 8. This shows the attaching principle by forming a loop which must be guided through one of the apertures 5 in the sole 1 to attach the strap 2 to the sole 1. In this configuration the cam buckle 4 can be slid on the strap 2 and the loop can be reduced or enlarged. When adjusted to the right fit, the long clamping lever 8 will be closed by pushing it down and thus locking the strap 2 by friction-locking at the desired position.

LIST OF REFERENCE NUMERALS

[0055] 1 sole [0056] 2 strap [0057] 3 anchor buckle [0058] 4 cam buckle [0059] 5 apertures [0060] 6 softer sub-component (of the sole) [0061] 7 harder sub-component (of the sole) [0062] 8 long clamping lever (of the cam buckle) [0063] 9 short clamping lever (of the cam buckle)