KR20110058823A - Shoe sole with ventilation effect - Google Patents

Abstract

The present invention includes a midsole body (10) comprising an air inlet opening (22) in the heel region (16) and an air outlet opening (28) in the midfoot region (24) and / or foot-toe region (26). It is about. The air inlet opening 22 is connected with the air outlet opening 28 through the ventilation channel 30. This ventilation channel is covered by a cover that can bend in a direction toward the outsole in the state of being loaded while walking. When walking with this type of shoe sole, the ventilation effect is enforced by a rolling walk, thereby dissipating heat from the sole of the shoe.

Description

Shoe sole with ventilation effect {AIR-VENTILATED SHOE SOLE}

The present invention relates to a walking machine having a shoe sole according to the preamble of claim 1 and a shoe sole according to claim 13.

The special shoe sole structure for walking equipment is called "Masai Barefoot Technology", abbreviated MBT (Embete), and is also known as the Swiss Masai trademark. A feature of the MBT walking equipment is in the form of a soft heel member, a so-called "Masai sensor", which is inserted and curved convexly in the walking direction. The midsole includes a reinforcement member, called a "shank," integrated therein, which reinforces the midsole so that the midsole does not generally deflect even at the portion where it is placed on top of the soft heel member. Due to the shoe sole structure of the MBT walking equipment intentionally made soft and unstable, the foot loses the characteristics of posture maintenance and support, which are characteristics of physiological gait. In this case, because the body must be actively balanced, the bottom structure affects many parts of the postural and sustained muscles. Wearing MBT walking equipment continues to perform some sort of coordination training and additional skeletal muscle parts due to this constantly required minimum balance and tension of the foot muscles to stand steadily. In particular, poorly used muscles are trained, posture and gait improved, the body becomes elastic and balanced. Wearing MBT walking equipment also helps in cases of disease in the spine, pelvis, legs or feet, and injuries to joints, muscles, ligaments or tendons, and relieves the load on the hips and knees. MBT walking equipment on the one hand warms the feet as it improves blood circulation, and on the other hand the shoe sole has a very thick thickness with correspondingly good thermal insulation properties. Therefore, there is a need to provide a shoe sole that allows for improved heat dissipation.

This is also necessary for shoe soles of other constructions, in particular shoe soles for sport shoes. For example, shoes of Adidas' "ClimaCool" series have air holes in the window.

It is an object of the present invention to provide a shoe sole with improved heat dissipation properties.

This object is achieved by a shoe sole comprising the features of claim 1.

The midsole body has one or more air inlet openings in the heel region and air outlet openings in the midfoot and foot-toe region of the foot. The air inlet opening and the air outlet opening are connected to each other via a ventilation channel. This ventilation channel is covered by a cover on the side-the upper side-opposite the outsole of the midsole body. Such a cover may be bent toward the outsole in a state where a load is applied during walking. Since the cover has elastic force, this cover is restored to the original form again when the load is relaxed.

Thereby, inevitably, constant air exchange occurs in the sole of the shoe by moving to rolling during walking, which improves heat dissipation. The forced air ventilation effect thus causes air to enter the soles of the shoes through the air inlet openings and re-discharge at the air outlet openings, which prevents the build up of hot air under the feet.

Through the compression of the bottom of the window, or through the compression of the shoe bottom cover when the heel is placed, the warm air in the ventilation channel is compressed through the air outlet opening corresponding to the subsequent rolling walk movement. During the progress of the rolling gait movement, the heel area is relieved of load, which leads to the intake of fresh air into the ventilation channel through the air inlet opening. The optimal rolling walk movement for this fully mechanical principle and the accompanying optimal air ventilation effect is achieved by the shoe sole according to claim 9. With conventional shoe soles, efficient air ventilation of this type will not be achieved.

Further preferred embodiments of the shoe sole according to the invention are described in the remaining dependent claims.

Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings. The drawings are shown in full schematic.

1 shows the invention with two air inlet openings in the heel area, which are in flow connection with an air outlet opening on the medial side and an air outlet opening on the lateral side through a ventilation channel in the midfoot and foot-toe region. A top view of the midsole body of the shoe sole according.
2 is a shoe according to the invention, formed in a midsole body, having an air inlet opening and an air outlet opening extending in a direction toward the outsole, wherein the midsole body includes a heel recess in which the soft heel member is disposed The bottom is the side view shown.
FIG. 3 likewise has a soft heel member and an air inlet opening and an air outlet opening disposed in the heel recess of the midsole body, but these air inlet openings and the air outlet openings are arranged in an edge region overlying the midsole body, Likewise a further embodiment of a shoe sole according to the invention is a side view.
4 is a perspective view showing a preferred embodiment of a cover for a ventilation channel having an air permeable support layer and a double conical elastic bearing member protruding from the support layer.
FIG. 5 is a view likewise shown in FIG. 4, with a further preferred embodiment of a cover which likewise comprises an air permeable support layer but from which the elastically deformable corrugated support strip protrudes from the support layer.
FIG. 6 shows a further particularly preferred embodiment of a cover with an air permeable support layer and a support layer formed as a spacer fabric, as shown in FIGS. 4 and 5.
7 is an exploded view illustrating one possible embodiment of the shoe sole according to FIG. 2.
8 is a side view showing another possible embodiment of the shoe sole according to FIG. 2.
9 is a plan view of the sole of the shoe according to FIG. 8, shown so that the midsole body is transparent and the ventilation channel is grey.
10 is a perspective view of the reinforcing member of the embodiment according to FIGS. 8 and 9.

1 shows a top view of the midsole body 10 of the midsole 12. These midsole bodies each have one air inlet opening (not only) in the shoe sole inner side 18, but also in the shoe sole outer side 20 in the rear section 14 of the heel region 16 when viewed in the walking direction (L). 22). The shoe sole inner side 18 means the side of the pair of shoe soles facing the other shoe sole, and the shoe sole outer side 20 denotes the opposite shoe sole side.

The midsole body 10 also includes five air outlet openings 28 in the midfoot area 24 and the foot-toe area 26 as well as in the shoe sole outer side, respectively. Viewed in the walking direction L, the middle foot region 24 extends to the heel region 16 and the football-toe region 26 to the middle foot region 24, each of which is approximately the shoe sole length. Extends over one third of the.

The air inlet opening 22 and the air outlet opening 28 are connected to each other by ventilation channels 30 formed through depressions in the midsole body 10. This ventilation channel comprises a heel section 32 having two branches 34 arranged in a V shape in the heel region 16. Each of these branches 34 is led to one of the two air inlet openings 22. Following the heel section 32, the ventilation channel 30 comprises a divider section 36, in which the main channel section 38 is flow-connected with the branches 34 of the heel section 32. ) Extends in the shoe longitudinal direction S to the foot-foot area 26. Viewed in a direction perpendicular to the shoe longitudinal direction S, the main channel section 38 is offset toward the shoe sole inner side 18 at the shoe longitudinal center to extend from the bottom of the inner instep.

Branch channel sections 40 diverge on both sides from the main channel section 38, each of which extends to one of the air outlet openings 28.

The air inlet openings 22 as well as the air outlet openings 28 preferably have a width of at least 4 mm and preferably at least two times the width so mentioned. Correspondingly, the ventilation channel 30 also preferably has a depth of at least 4 mm in this regard as measured in a direction perpendicular to the foot bed side surface 42 that is placed on top of the midsole body 10. . The width of the ventilation channel 30 is larger than the depth at all positions in a preferred manner, and preferably has a size of at least twice.

On the side of the surface 42, the ventilation channel 30 is covered by a bendable cover 52, which is not shown in FIG. 1 but described in the preferred embodiments with respect to FIGS. 4 to 6. .

FIG. 2 shows a side view of the midsole 12 of the sole of the shoe, wherein the midsole body 10 of the midsole has one air inlet opening, each on both sides, in the rear section 14 of the heel region 16. (22), having a total of four air outlet openings 28 in the midfoot region 24 and the foot-toe region 26, which air outlet openings are arranged one after another back and forth in the shoe longitudinal direction S; It is arranged to overlap the scales according to the tilt position and length. The air inlet opening 22 and the air outlet opening 28 are flow-connected to one another by means of a ventilation channel 30, corresponding to FIG. 1, which has four branch channel sections 40 on both sides.

The midsole body 10 includes a heel recess 46 on its lower side toward the outsole 44, within which the soft heel member 48 is disposed. This soft heel member extends from the rear section 14 of the heel region 16 to approximately the center of the midsole 12 when viewed in shoe longitudinal direction S, and at least approximately constant cross section in the form of a convex-convex lens. And extends over the entire width of the midsole 12. The soft heel member 48 and the midsole body 10 have the form of an outsole that is continuously convexly curved in the longitudinal direction (S) of the shoe sole-in the absence of a load-as is generally known in MBT walking equipment. Keep it. This soft heel member 48 has the thickest thickness of about 20 mm. Correspondingly, the thickest thickness of the midsole body 10 is about 30 mm.

In this regard, it will be mentioned that the midsole body 10 includes a bead portion 50 surrounding the periphery, which bead projects upward in the surface 42. This bead part, on the one hand, is used to secure the midsole 12 to the upper 56 and on the other hand the cover 52 described above in the depression which is bounded by the surface 42 and the bead part 50. Is placed.

The soft heel member is preferably made of open cell polyurethane elastomer foam (PUR Shore 30 C) and the midsole body 10 is made of polyurethane elastomer (PUR Shore 58 C) or ethylene vinyl acetate (EVA). This applies to all the embodiments shown.

3 shows the midsole 12 of the sole of the shoe formed in the same manner as the midsole of the shoe sole according to FIG. 2, where the air inlet opening 22 and the air outlet opening 28 are formed of an ellipse, Extend in a row in the border region lying on top of 10). Here too the air inlet opening 22 and the air outlet opening 28 are connected to each other by corresponding ventilation channels 30.

An elastically deformable cover 52 for the ventilation channel 30 is preferably formed through the insole 54, which is placed on a surface 42 that lies on top of the midsole body 10, and beads from all sides. It extends up to the portion 50, or it is fixed to the midsole body 10 and extends up to the upper contacting the bead portion 50.

The embodiment of insole 54 shown in FIG. 4 includes an air permeable support layer 58 overlying, from which support members 60 are arranged to be spaced from each other and have a grid pattern. It projects in a downward direction, that is, in a direction toward the midsole body 10 in the mounted state. These bearing members are formed in a double cone shape in a preferred manner and are made of elastic plastic. Thus, their lengths are optimally matched to depressions in the midsole body 10. In the mounted state, their exposed ends rest on the midsole body 10.

One further embodiment of insole 54 is shown in FIG. 5. This insole likewise has an air permeable support layer 58 lying thereon. From this support layer, a wave form elastically deformable support strip 62 protrudes downward. This holding strip preferably extends in planes that extend perpendicular to the support layer 58 and parallel to each other. In the mounted state, the retaining strip 62 is placed on the midsole body 10 by a wave-shaped crest point portion opposite the support layer 58.

Thus, the support member 60 or the support strip 62 forms a deflectable support layer 64 for the support layer 58.

In a particularly preferred embodiment of the insole 54 shown in FIG. 6, the support layer 64 is formed as a spacer fabric 66. The upper side forms an air permeable support layer 58 from which extends an elastically deformable pile tread, also called a spacer tread, in a downward direction. Fabrics of this type are manufactured, for example, by Mueller Textil GmbH, Wiehl-Drabenderhoehe, Germany, and are marketed under the name "3mesh". Possible embodiments of the spacer fabric 66 are known, for example, from EP 1 775 362 A and EP 1 860 218 A.

7 shows a schematic exploded view of a preferred embodiment of the shoe sole according to FIG. 2. The midsole body 10 is provided with a heel recess 46. The soft heel member 48 is inserted into the heel recess 46 in the present embodiment in a space-filled manner. Outsole 44 is held in a convex shape by being secured to midsole body 10 and soft heel member 48 as is known from MBT walking equipment (compare FIGS. 2 and 3). Such outsoles are composed of rubber, for example, and comprise 55 to 65 Shore A hardness.

The vent insert 68 is shown away from the midsole body 10 in FIG. 7, but is integrated into this midsole body. In plan view, the ventilation insert 68 has a U-shape, with two parallel branches 70, 70 ′ extending in the shoe sole longitudinal direction S and in the walking direction L. In view-they are connected to each other via a curved section 72 at their rear end. The two branches 70, 70 ′ and the curved section 72 are formed through a channel wall 74 having a U-shaped cross section, which channel wall 74 is in the region of the branches 70, 70 ′. Each one forms a boundary of the main channel section 38 '. The branches 70, 70 ′ and the curved section 72 open on the side opposite the outsole 44 in the upward direction. The channel wall 74 forms a bottom portion 76, an inner wall portion 78, and an outer wall portion 80, and these two wall portions 78 and 80 protrude upward from the bottom portion 76. . The exposed top edge of the walls 78, 80 lies coplanar with the surface 42 lying on top of the midsole body 10 with the vent insert 68 integrated. In the heel region 16, the depth of the U-shaped cross section is preferably at least 4 mm when measured from the exposed edges of the wall portions 78, 80 to the bottom portion 76. In addition, the wall portions 78, 80 preferably have a gap with respect to each other of 8 mm or more. The above-described depth in the midfoot region 24 increases correspondingly to the shape of the heel recess 46 and then continuously decreases in the direction toward the front end in the walking direction L. FIG.

The curved section 72, located in the posterior section 14 of the heel region 16 in the integrated state, in the direction from the outer wall 80 toward the shoe sole inner side 18 and the shoe sole outer side 20 One air inlet tube stub 82 protrudes in the direction toward). These air inlet tube stubs are in flow connection with the main channel section 38 'and the exposed end located outside the air inlet tube stub forms an air inlet opening 22.

Correspondingly, the air outlet tube stubs 84 protrude in the outward direction from the outer wall portion 80 in the midfoot region 24 and the foot-toe region 26. These air outlet tube stubs are also in flow connection with the assigned main channel section 38 ′, forming branch channel sections 40, and the exposed end of the air outlet tube stub forms an air outlet opening 28.

The vent insert 68 is manufactured by injection molding method with a TPU of 85 Shore A in a preferred manner.

In addition, FIG. 7 shows that the section located above the soft heel member 48 in the midsole 12 is at least hardly flexed with respect to the load while standing and walking, at least the heel region 16 and the foot. The reinforcing member 86 is shown in the intermediate region 24. In the state integrated into the midsole body 10, this reinforcement member 86 is surrounded by a ventilation insert member 68. Accordingly, the reinforcing member 68 is located in the middle region of the midsole body 10 when viewed in a direction perpendicular to the shoe sole longitudinal direction S, as well as the direction toward the shoe sole inner side 18 as well as the shoe sole. One of the two main channel sections 38 ′ is also arranged in the direction towards the outer side 20.

Likewise preferably the reinforcing member 86, which is produced by the injection molding method, comprises a tongue-shaped, plate-shaped support 88 placed thereon, and a V-shaped support projecting from the support in a downward direction. Having a portion 90. In addition to the support 88, the support 90 is also formed as a double wall, each of which is fixedly connected to each other via a rib 92. The support 82 is located near the surface 42 with the midsole body 10 integrated, as shown in FIG. 7 with the midsole body 10, in which the reinforcing member 86 is already present. It is integrated in the midsole body 10. This reinforcing member extends from the inner wall 78 of the curved section 72 to the front section of the foot-toe region 26 in the forward-looking walking direction L between the two branches 70, 70 ′. Is extended. In a preferred manner, the reinforcing member 86 is formed to have rigidity in the heel region 16 and the midfoot region 24, for example made of nylon 12, while flexible in the foot-foot region 26. It may be formed to have, for example composed of a TPU.

The bearing portion 90 is likewise firmly formed, and the branch portion 90 ′ which is rearward in the walking direction L in the bearing portion 90 is formed corresponding to the heel recess 46, and this rear portion is divided. The base 90 'encounters the forward branch 90' 'at the end of the heel recess 46, which is forward in the walking direction L, and forms a tilting edge 94 in this position.

The prefabricated reinforcing member 86 and the prefabricated ventilating insert 86 can be inserted into the cavity of the injection molding mold for injection of the midsole body 10, for example after blocking of the mold. PUR Shore 58 C is injected to cast the midsole body 10. In this case, the injection molding die includes a slide engaged with the air inlet tube stub 82 and the air outlet tube stub 84 to prevent compression of the ventilation insert member 86 during injection molding of the midsole body 10. And a support rib for the channel wall 74.

According to the exploded view, the midsole body 10 shown in FIG. 7 has depressions and passages formed identically as compared to the ventilation insert member 68.

Also shown in FIG. 7 is an insole 54, which forms a cover 52, which is at best exposed from the midsole body 10 and at the exposed end and reinforcing members of the outer wall 80 and the inner wall 78. Lies on a surface 42 formed from 86.

On the circumferential side, the insole 54 is surrounded by a bead portion 50 formed relatively high. In a preferred manner, the support layer 58 of the insole 54 is formed in the form of a foot bed and is matched correspondingly to the thickness of the bearing layer 64. In addition, the surface 42 includes a surface portion 42 'having a continuous strip form at the shoe sole side 20 as well as the shoe sole inner side 80 between the outer wall portion 80 and the bead portion 50. As such, the support layer 64 is supported in a wide center section over the entire length of the midsole body 10 over the reinforcement member 86 to surround the perimeter along the bead portion 50.

8 and 9 show one further possible embodiment of the reinforcing member 86 for the midsole 12 according to FIG. 2 or 3, which is formed by the ventilation channel 30 corresponding to FIG. 1. 10 is a perspective view of the reinforcing member 86 viewed obliquely from above. This reinforcing member further has the same purpose as is known from the MBT walking equipment, while further being described above in connection with the embodiment according to FIG. 7. 8 and 9 the contour of the midsole 12 is shown and the reinforcing member 86 is shown in dark color.

The flat reinforcement member 86 in the heel region 16 extends along the heel recess 46 in the midsole body 10 and the rear section of the foot-toe region 26 in the direction of walking L. FIG. And in the midfoot region 24, there is a gap extending below the ventilation channel 30 inside the midsole body 10. Since the wall thickness of the midsole body 10 between the surface 42 and the heel recess 46 is much thinner in the heel region 16 than in the midfoot region 24 and the foot-toe region 26, MBT The use of the reinforcing member 86 known from the walking equipment makes the depth of the ventilation channel 30 in the heel section 32 insufficient. This is particularly evident from FIG. 9 where the ventilation channel 30 is shown in grey. To counteract the above-mentioned disadvantages, the reinforcing member 86 of the heel region 16 has a recess 96 corresponding to the heel section 32 and in the form of a V-shaped channel in plan view. Nevertheless, in order to ensure the required bending stiffness of the reinforcing member 86, this reinforcing member comprises a support rib extending from the lower side, for example along the web 100 separating the passages 98 from each other. can do. Even when such a support rib protrudes into the soft heel member 48, its low height does not change the state or characteristics of the shoe sole. It is also possible to form the reinforcing member 86 of the heel region 16 of a more rigid material.

In the shoe sole according to FIG. 7, without the use of the vent insert 68, the depression and its connection for forming the main channel section 38 ′ are formed in the curved section 72 via ribs from the injection molding mold. It is conceivable to form and form the branch channel section directly on the midsole body 10 using a slide.

When walking to the sole of the shoe shown in the figures and described above, the soft heel member 48 is compressed on the one hand when stepping into the heel area 16, which significantly reduces the impact on the user's body, On the one hand the cover 52 of the heel region 16 is also deformed in the direction to the midsole body 10. This allows the air filled cross section to be locally narrowed, bounded by the midsole 10 and cover 52 or support layer 58 thereof. As a result of the rolling walk at the bottom, this narrowed cross section is displaced into the foot-toe area 26 via the midfoot area 24 in the walking direction L. As shown in FIG. The portion narrowed from the heel region 16 to the foot-toe region 26 thus moves so that air from the ventilation channel 30 is exhausted through the air outlet opening 38, while the tilting edge 94 Alternatively, after tilting about the tilting edge formed at the front end of the heel recess 46 through the midsole body 10, the insole 54 or cover 52 of the heel region 16 is relaxed under load. This causes the elasticity of the insole 54 or the cover 52 to cause an enlargement of the cross section again behind the narrowed portion, whereby fresh air through the air inlet opening 20 is introduced into the ventilation channel 30. Is inhaled. Thus, during walking, air is supplied through the midsole 12 in the form of a ventilation effect on a completely mechanical principle. This warmed air is discharged through the air outlet opening 28, while fresh and cool air is sucked through the air inlet opening 22.

If the cover 52 or insole 54 is formed to be air permeable, additionally the user's feet receive correspondingly cool air.

Claims (13)

A midsole 12 comprising a midsole body 10 extending over a heel region 16, a midfoot region 24, and a foot-toe region 26, and a shoe sole with an outsole 44. In
The midsole body 10 has one or more air inlet openings 22 in the heel region 16, an air outlet opening 28 in the midfoot region 24 and / or foot-toe region 26, A vent channel 30 connects the air inlet opening 22 with the air outlet opening 28, the vent channel on the side opposite the outsole 44-with the load applied when walking. Shoe sole, characterized in that it is covered by a cover 52 that can be bent in a direction. The air inlet opening (22) according to claim 1, wherein the rear section (14) of the heel region (16), in the direction of walking (L), has one air inlet opening (22) in the medial side (18) as well as the lateral side (20). And the air outlet openings 28 are present in the medial side as well as the lateral side in the midfoot region 24 and / or foot-toe region 26. 3. The ventilation channel (30) according to claim 2, wherein the ventilation channel (30) comprises a V-shaped heel section (32) guided to the air inlet openings (22) by a branch (34) in the heel region (16). In the middle region 24 and optionally the foot-toe region 26 branch channels sections which are branched laterally from the central main channel section 38 and from these central main channel sections to the air outlet openings 28. Shoe sole, characterized in that it comprises a divider section (36) having a (40) and connected to the heel section (32). 3. The ventilation channel (30) according to claim 1, wherein the ventilation channel (30) comprises two main channel sections (38 ′) which extend at least almost in the shoe sole longitudinal direction (S) and connect with the air inlet openings (22). An air outlet opening on the inner side from the main channel section of one of the main channel sections 38 'to the air outlet opening 28 on the outer side and from the other main channel section of the main channel sections 38'. Shoe sole, characterized in that branching channel sections (40) guided to (28) diverge. 5. The cover 52 according to claim 1, wherein the cover 52 comprises an insole 54, the insole preferably comprising an air permeable support layer 58, wherein the support layer 58 is in the support layer 58. Shoe sole, characterized in that it comprises a support layer 64 that can be bent to the side toward the midsole body (10). 6. The bearing member (64) according to claim 5, wherein the bearing layer (64) comprises a plurality of bearing members (60), preferably in the form of a double cone, which are spaced from each other and protrude from the support layer (58). The sole of the shoe, characterized in that supported by the midsole (12). The shoe of claim 5, wherein the support layer 64 comprises a plurality of corrugated support strips 62 protruding from the support layer 58, wherein the support strips are supported in the midsole 12. floor. 6. The shoe sole according to claim 5, wherein the support layer (64) comprises a spacer fabric (66) supported by the midsole (12). 9. The soft heel member 48 is disposed within the heel recess 46 of the midsole body 10, wherein the outsole 44 comprises a midsole body 10 and a heel recess 46. The soft heel member 48 maintains the convexly curved shape of the shoe sole in the longitudinal direction S—with no load applied thereto—and the heel region 16 and midfoot region of the midsole 12. 24 is provided with a reinforcing member 86 having a rigidity that is at least hardly flexed against the load while standing and walking while the section located above the soft heel member 48 in the midsole 12. Shoe sole, characterized in that. 10. The shoe sole according to claim 9, wherein the reinforcing member (86) is integrated into the midsole body (10) and comprises a channeled recess (96) for the ventilation channel (30). 10. The reinforcement member (86) according to claim 4 and 9, wherein the reinforcement member (86) is disposed in the middle region-in the shoe bottom transverse direction-in the midsole body (10) and on each side of the reinforcement member (86) a main channel section. Shoe sole, characterized in that the main channel section of one of the 38 'extends. 12. The ventilation insert member 68 according to claim 11 is incorporated in the midsole body 10, preferably in a plan view, with a U-shaped ventilation insertion member 68, the ventilation insertion member having a U-shaped channel wall (in side view). 74 delimits the main channel section 38 ′, wherein the ventilating insertion member protrudes from the channel wall 74 of the heel region 16 and flows in flow connection with the main channel section 38 ′. An air outlet tube stub 84 protruding from the inlet tube stub 82 and the channel wall 74 of the midfoot region 24 and / or foot-toe region 26 and in flow connection with the main channel section 38 ′. Shoe sole comprising a). Walking equipment comprising a shoe sole according to claim 1 and an upper 56 arranged on the shoe sole.

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