Patent Publication Number: US-2022219069-A1

Title: Brake arrangement for a touring binding

Description:
The present invention relates to a brake arrangement for a touring binding, wherein the brake arrangement is adjustable between a braking position and a sliding position, comprising a base having a fastening arrangement for fastening to a ski and/or to the touring binding, a pedal which, on the side thereof facing away from the ski, has a step surface for a shoe, in particular for a heel portion of a ski boot, at least one brake arm which is mounted on the base and on the pedal, at least one first resilient element which is designed to preload the brake arrangement into the braking position, a locking element and a blocking element. The present invention also relates to a heel unit comprising a brake arrangement of this type. 
     A brake arrangement for touring bindings is intended to brake the ski in the event of a decoupling of a ski boot and a touring binding, for example in the event of a fall of a user, also called triggering, or otherwise loss of a ski on sloping terrain, in order to prevent the complete loss of the ski on the one hand and to prevent danger for other winter sports enthusiasts as a result of the loss of a ski. A brake arrangement for touring bindings therefore represents an important safety feature. 
     If the binding is coupled to a ski boot, a sole portion of the ski boot conventionally presses a pedal downwards against a force of a resilient element and at least one brake arm connected to the pedal, in particular two brake arms, is/are lifted in a vertical direction with respect to a ski plane to a level above a skiing surface, so that the brake arrangement is in a sliding position and the brake arm(s) for uphill skiing or downhill skiing using the skis can no longer engage with the ground and brake the ski. 
     In the case of touring bindings, in addition to downhill skiing, uphill skiing is also possible in that so-called climbing skins are fastened to the skiing surface. A touring binding conventionally comprises a heel unit, which can be coupled to a heel portion of a ski boot, and a front unit, which can be coupled to a toe portion of a ski boot. In most cases, both the heel portion is coupled to the heel unit and the toe portion is coupled to the front unit for downhill skiing. In contrast, when uphill skiing, either only the toe portion is pivotably coupled to the front unit so that a ski boot heel can lift off the heel unit, or the heel unit and the front unit are coupled to one another, both remain on the ski boot and comprise a joint on the front unit, which allows lifting of the ski boot from the ski including the heel unit. In the latter case, the arrangement of heel unit and front unit can be locked to the ski for downhill skiing. 
     Since touring bindings can also be used for uphill skiing, locking or blocking of the brake arrangement in the sliding position is necessary, in which the brake arm(s) are lifted by the ski boot to a level above the skiing surface even without the action of force on the pedal, since, when uphill skiing, a ski boot heel is lifted, and the sole portion of the ski boot no longer presses the pedal down. By locking or blocking the brake arrangement in the sliding position, the ski boot heel can be lifted from the brake arrangement for uphill skiing without the brake arm(s) engaging with the ground and being able to brake the ski. 
     Systems of this type are known and many different binding models are available on the market which meet the functions and requirements described. However, today&#39;s market development is fast-paced and there are some additional requirements placed on brake arrangements for touring bindings. 
     In touring bindings and brake arrangements for touring bindings, for example, low weight and a less complex structure play an important role. For example, when used in adverse weather conditions and cold temperatures in ice and snow, a simple structure is advantageous, since the binding systems should work absolutely reliably even under the influence of ice and snow. In addition, there is a trend towards comparatively light bindings, which make uphill skiing easier due to their lower weight but also offer sufficient security. As mentioned at the outset, a brake arrangement represents an important safety feature for touring bindings. 
     In addition, increased user comfort is an extremely relevant requirement for touring bindings and, in particular, also for brake arrangements for touring bindings. For the purpose of a brake lock, the pedal is conventionally pressed down by hand against the force of the resilient element in order to adjust the brake arrangement into the sliding position, and subsequently a blocking element is set from a release position into a blocking position in order to block a movement of the brake arrangement caused by the force of the resilient element directed back into the braking position and thus to lock the brake arrangement in the sliding position. In this case, however, it is desirable to provide a so-called step-in function. This means that the blocking element can first be set into the blocking position without it being necessary to first press the pedal down by hand, and then the brake arrangement can be brought into the sliding position and can be locked there by lowering the ski boot and depressing the pedal using the ski boot. 
     Another safety feature consists in preventing incorrect operation of the brake arrangement by means of the structure and design of the touring binding and/or the brake arrangement. In this disclosure, the following process is referred to as incorrect operation: It can happen that a user moves the brake arrangement into the sliding position and locks it in the sliding position by means of the blocking element. If he now couples the toe and heel portion of his ski boot to a touring binding for downhill skiing, the touring binding is in a downhill configuration, but the brake arrangement is not in the braking position required for the downhill configuration. The same can happen unintentionally in the case of a step-in process as described above if the user, with the blocking element set in the blocking position, lowers his ski boot in order to couple the ski boot to the touring binding and thereby depresses the pedal and locks the brake arrangement in the sliding position. As a result of the locking of the brake arrangement in the sliding position, in the case of triggering of the binding, the ski decoupled from the ski boot would not be braked by the brake arms and thus possibly be lost, but in particular would represent a considerable danger for other winter sports enthusiasts. It is a requirement of modern touring bindings or brake arrangements for touring bindings to prevent such so-called incorrect operation as much as possible. 
     Against this background, it is therefore an object of the present invention to provide a brake arrangement or a heel unit which comprises a brake arrangement that is easier to operate, and thus to provide better user comfort, which in particular has an improved brake locking function and/or which provides a function that prevents incorrect operation. 
     According to a first aspect of the invention, the object of the invention formulated above is achieved by a brake arrangement for a touring binding, wherein the brake arrangement is adjustable between a braking position and a sliding position, comprising a base having a fastening arrangement for fastening to a ski and/or to the touring binding, a pedal which, on the side thereof facing away from the ski, has a step surface for a shoe, in particular for a heel portion of a ski boot, at least one brake arm which is mounted on the base and on the pedal, at least one first resilient element which is designed to preload the brake arrangement into the braking position, a locking element which is movable between an engaged position and a disengaged position and, in the engaged position, is designed to lock the brake arrangement in the sliding position, wherein the locking element is preloaded into the engaged position, and a blocking element which is adjustable between a blocking position, in which the blocking element engages with the locking element in the sliding position of the brake arrangement when the locking element is in the engaged position, and a release position, in which the blocking element does not engage with the locking element. 
     Important features of the invention are thus the adjustability of the blocking element between the blocking position and the release position and, in particular, the preloading of the locking element into the engaged position. This preload makes it possible that, when the blocking element is set into the blocking position, the locking element remains securely in the engaged position and the brake arrangement is reliably locked in the sliding position and, moreover, automatically returns to the engaged position after an adjustment. This arrangement advantageously allows a step-in function. If the blocking element is set into the release position, however, the locking element does not engage with the blocking element at all, and the brake arrangement remains unlocked and preloaded in the braking position so that it can safely brake the ski in the event of a fall or the like. 
     At this point, it should be noted that, within the context of this disclosure, in order to simplify visualisation, terms such as “top”, “bottom”, “front”, “rear”, “lateral”, “vertical”, “horizontal”, “vertical direction”, “transverse direction”, “width direction”, “longitudinal direction” and the like relate to the point of view of a skier who has stepped into the front unit of a ski binding, in particular touring binding, mounted on a ski using a ski boot, the ski being arranged in a horizontal plane. Furthermore, it should also be noted that the term “ski” as well as the terms containing this term, such as “ski boot”, “ski binding”, “touring ski binding”, “ski plane”, “skiing surface”, “ski surface”, “longitudinal axis of the ski”, “central axis of the ski”, “transverse direction of the ski”, “width direction of the ski”, “longitudinal direction of the ski” and the like, are not only to refer to skis in the narrower sense, but also comprise splitboards (snowboards that can be divided lengthways into at least two parts, the individual parts of which can be used in the manner of normal skis), snowshoes or similar boards for walking or sliding on snow and ice. All of these objects or parts thereof are regarded as skis or parts of skis for the purposes of this invention. 
     In a preferred embodiment, the blocking element in the blocking position thereof can be designed to block the brake arrangement in the sliding position. This can take place in particular through an interaction of the blocking element in the blocking position and the locking element in the engaged position, whereby a particularly reliable brake lock can be provided in a simple manner. 
     In particular, the blocking element can be mounted on the brake arrangement, in particular on the base, so as to be rotatable about an axis of rotation that is substantially perpendicular to a ski plane, such that said blocking element moves in a plane that is substantially parallel to a ski plane during an adjustment between the blocking position and the release position. A rotatable mounting of the blocking element has proven to be favourable against the background of a possible icing up of the brake arrangement, since a frozen mechanism can be released more easily by a rotary movement than by a linear movement. 
     It has been found to be advantageous if the blocking element comprises at least one actuating portion which is designed substantially moves in a transverse direction of the ski during an adjustment of the blocking element between the blocking position and the release position and an associated rotation of the blocking element about the axis of rotation in the plane that is parallel to the ski plane, which transverse direction of the ski is perpendicular to a longitudinal direction of the ski. In particular, the idea is to provide an actuating portion on both sides on the left and right in the width direction of the ski. Such actuating portion(s), which can be pulled or pressed by a user in order to adjust the blocking element, ensure simple operation of the blocking element and thus of the brake arrangement. Due to the rotatable mounting of the blocking element, an actuating portion of this type naturally also moves on a circular path; however, a relatively large radius of this circular path compared to a width of the brake arrangement in the width direction of the ski results in a movement substantially in a transverse direction of the ski, in particular the width direction of the ski. The actuating portion(s) are preferably arranged on the outside in the width direction of the ski with respect to the brake arrangement, as a result of which they can be easily reached and further improve user comfort. 
     In a further preferred embodiment, the pedal can comprise the locking element and the brake arrangement can be designed such that it is locked in the sliding position by an engagement between the pedal and the blocking element when the blocking element is in the blocking position. In an arrangement of this type, the blocking element, when it is set into the blocking position, blocks the brake arrangement in the sliding position by engaging the pedal on which the first resilient element acts directly or indirectly in order to preload the brake arrangement into the braking position. In this way, a reliable brake lock can be achieved. 
     In this embodiment, the locking element can preferably be arranged on an underside of the pedal pointing in the direction of a ski surface, in particular protrude downwards from the underside of the pedal, and/or the locking element can be mounted on the pedal so as to be pivotable about an axis. If the locking element is provided on the underside of the pedal, it does not protrude from the brake arrangement. In this way, on the one hand, a compact, space-saving arrangement can be achieved and, on the other hand, the locking element can be prevented from being adjusted or released from the engaged position by external action, which can happen with conventional brake arrangements, for example, if the user&#39;s ski boots and thus parts of a left and right touring binding possibly hit one another during uphill skiing due to an improperly executed walking movement. 
     The locking element can preferably be provided in the form of a hook, wherein the hook is designed to engage with a contour of the blocking element in the engaged position of the locking element when the blocking element is in the blocking position. A hook ensures a direct power transmission through a form-fitting connection and thus offers an extremely reliable locking. 
     In particular, the locking element can be preloaded into the engaged position by a second resilient element. In this case, the second resilient element can be a leg spring which is coupled to the pedal and the locking element. The locking element, which can in particular be formed as a hook, can initially move in the direction of the disengaged position against the spring force of the second resilient element during an adjustment of the brake arrangement from the braking position into the sliding position by interacting with another component, such as the blocking element, and then snap back into the engaged position by the spring force of the second resilient element in order to lock the brake arrangement in the sliding position. In this way, a step-in function can be provided. 
     Particularly preferably, the locking element can be arranged on the pedal, and the locking element can be designed to interact with the blocking element when the blocking element is in the blocking position during an adjustment of the brake arrangement from the braking position into the sliding position and during an associated movement of the pedal and the locking element in the direction of a ski surface such that the locking element, in a transition position of the brake arrangement between the braking position and the sliding position, initially moves from the engaged position against the preloading force into the disengaged position and returns into the engaged position upon a further movement of the pedal and the locking element in the direction of the ski surface due to the preload. In this way, in turn, an extremely user-friendly step-in function can be provided. 
     According to a second aspect of the invention, the object of the invention formulated above is achieved by a heel unit for a touring binding, wherein the heel unit is adjustable between a moving position and a walking position, comprising a binding base having a fastening arrangement for fastening to a ski, a binding body which is mounted on the binding base so as to be rotatable about an axis of rotation that is substantially perpendicular to a ski plane in order to adjust the heel unit between the moving position and the walking position, engagement means which protrude from the binding body in order to engage with a heel portion of a ski boot in the moving position of the heel unit, wherein, in the moving position of the heel unit, the engagement means points forwards in a direction of travel and, in the walking position of the heel unit, points in a direction which is different from the direction of travel, in particular differs by about 180°, and optionally a brake arrangement, in particular according to the first aspect of the invention, comprising a base having a fastening arrangement for fastening to a ski and/or to the touring binding, a pedal which, on the side thereof facing away from the ski, has a step surface for a shoe, in particular for a heel portion of a ski boot, at least one brake arm which is mounted on the base and on the pedal, at least one first resilient element which is designed to preload the brake arrangement into the braking position, a locking element which is designed to lock the brake arrangement in the sliding position, and a blocking element which is adjustable between a blocking position, in which the blocking element engages with the locking element, and a release position, in which the blocking element does not engage with the locking element, wherein the blocking element is designed such that it cannot be brought into the blocking position in the moving position of the heel unit. 
     If the blocking element cannot be brought into the blocking position in the moving position of the heel unit, incorrect operation is also not possible in which a user could move the brake arrangement into the sliding position and lock it in the sliding position by means of the blocking element. Thus, the configuration according to the second aspect of the present invention prevents an incorrect operation of this type. 
     The blocking element and the binding body can preferably be designed such that the blocking element cannot be brought into the blocking position in the moving position of the heel unit due to an interaction between the blocking element and the binding body. In particular, this means that the blocking element cannot be adjusted into the blocking position or is even fixed in the release position. In this way, incorrect operation is not possible and can be reliably prevented. 
     In a preferred embodiment of the present invention, the binding body can have a contact portion and the blocking element can have a contact portion, wherein the contact portion of the blocking element is provided on an extension provided on the blocking element and wherein the contact portions are designed in such a way that they rest against one another in the moving position of the heel unit such that the blocking element is blocked in the release position. Thus, a direct stop can be provided between the blocking element and the binding body, which stop prevents the blocking element from being moved into the blocking position in the moving position of the heel unit and an associated specific position of the binding body, whereby incorrect operation is not possible and can be reliably prevented. 
     In a further preferred embodiment, the blocking element can be mounted on the brake arrangement, in particular on the base, so as to be rotatable about an axis of rotation that is substantially perpendicular to a ski plane, such that it moves in a plane that is substantially parallel to a ski plane during an adjustment between the blocking position and the release position. In addition to preventing incorrect operation, rotatable mounting of the blocking element has proven to be favourable against the background of a possible icing up of the brake arrangement, since a frozen mechanism can be released more easily by a rotary movement than by a linear movement. 
     In this case, the blocking element can comprise at least one actuating portion which is designed substantially moves in a transverse direction of the ski during an adjustment of the blocking element between the blocking position and the release position and an associated rotation of the blocking element about the axis of rotation in the plane that is parallel to the ski plane, which transverse direction of the ski is perpendicular to a longitudinal direction of the ski. In particular, the idea is to provide an actuating portion on both sides on the left and right in the width direction of the ski. Such actuating portion(s), which can be pulled or pressed by a user in order to adjust the blocking element, ensure simple operation of the blocking element and thus of the brake arrangement. Due to the rotatable mounting of the blocking element, an actuating portion of this type naturally also moves on a circular path; however, a relatively large radius of this circular path compared to a width of the brake arrangement in the width direction of the ski results in a movement substantially in a transverse direction of the ski, in particular the width direction of the ski. The actuating portion(s) are preferably arranged on the outside in the width direction of the ski with respect to the brake arrangement, as a result of which they can be easily reached. In addition to preventing incorrect operation, user comfort can thus be further improved. 
     According to a third aspect of the invention, the object of the invention formulated above is achieved by a touring binding, comprising a brake arrangement according to the first aspect of the invention and/or a heel unit according to the second aspect of the invention. 
     This arrangement combines the advantages of the adjustability of the blocking element between the blocking position and the release position and the prevention of incorrect operation. 
    
    
     
       The invention is explained in more detail below on the basis of a preferred embodiment of the present invention with reference to the accompanying drawings. In the drawings: 
         FIG. 1 a    is a top view of a heel unit according to the embodiment of the present invention in a walking position and of a brake arrangement according to the embodiment of the present invention in a braking position; 
         FIG. 1 b    is a sectional view of the heel unit and the brake arrangement from  FIG. 1   a;    
         FIG. 2 a    is a side view of the heel unit according to the embodiment of the present invention in the walking position and of the brake arrangement according to the embodiment of the present invention in a transition position between the braking position and a sliding position; 
         FIG. 2 b    is a sectional view of the heel unit and the brake arrangement from  FIG. 2   a;    
         FIG. 3 a    is a side view of the heel unit according to the embodiment of the present invention in the walking position and of the brake arrangement according to the embodiment of the present invention in the sliding position; 
         FIG. 3 b    is a sectional view of the heel unit and the brake arrangement from  FIG. 3   a;    
         FIG. 4 a    is a detail of a perspective view of the heel unit and the brake arrangement from  FIG. 2   a;    
         FIG. 4 b    is a detail of a perspective view of the heel unit and the brake arrangement from  FIG. 3   a;    
         FIG. 5 a    is a side view of the heel unit according to the embodiment of the present invention in a moving position and of the brake arrangement according to the embodiment of the present invention in the braking position; 
         FIG. 5 b    is a sectional view of the heel unit and the brake arrangement from  FIG. 5   a;    
         FIG. 6 a    is a plan view of the heel unit and the brake arrangement of  FIG. 5 a   ; and 
         FIG. 6 b    is a detail of a perspective view of the heel unit and the brake arrangement from  FIG. 5   a.    
     
    
    
     In  FIG. 1 a  to 6 b   , a brake arrangement according to the embodiment of the present invention is generally designated by the reference sign  10 , and a heel unit according to the embodiment of the present invention is generally designated by the reference sign  100 . 
     The heel unit  100  is adjustable between a moving position and a walking position. The moving position is shown in  FIGS. 5 a , 5 b , 6 a  and 6 b   , while the walking position is shown in the remaining  FIG. 1 a  to 4 b   . In the moving position, the heel unit  100  is designed to engage a heel portion of a ski boot in order to couple it to the heel unit  100  for downhill skiing, whereas in the moving position the heel unit  100  is designed to release the heel portion so that the heel portion can be lifted from the heel unit  100  for uphill skiing. 
     The heel unit  100  comprises a binding base  120 . In the embodiment according to the invention, the binding base is in the form of a binding slide  120  which is fastened to a binding plate  15  and is displaceable in the longitudinal direction of the ski. The binding plate  15  can in particular be fastened to a ski by means of screws. The heel unit  100  further comprises a binding body  130  which is mounted on the binding base  120  so as to be rotatable about an axis of rotation X 2  that is substantially perpendicular to a ski plane in order to adjust the heel unit  100  between the moving position and the walking position. In the preferred embodiment, this mounting consists of a radial bearing  122  formed on the binding base  120  and a complementary radial bearing  132  formed on the binding body  130 , which can be designed circumferentially, but in particular only in partial portions such as in a longitudinal direction of the ski at the front and rear. 
     The heel unit  100  further comprises engagement means  140  protruding from the binding body  130 , in particular in the form of protruding pins  140 . In the moving position, the engagement means  140  engage with a heel portion of a ski boot and point forwards in a direction of travel. In the walking position, the engagement means  140  point in a direction that differs from the direction of travel. In the preferred embodiment, in the walking position, the engagement means  140  point backwards, counter to the direction of travel, in the longitudinal direction of the ski. 
     The brake arrangement  10  is adjustable between a braking position and a sliding position. The braking position is shown in  FIGS. 1 a , 1 b , 5 a , 5 b , 6 a  and 6 b    and the sliding position is shown in  FIGS. 3 a , 3 b  and 4 b   . A transition position between the braking position and the sliding position is shown in  FIGS. 2 a , 2 b  and 4 a   . In the braking position, the brake arrangement  10  is designed to brake a ski in the event of a decoupling of the touring binding and ski boot, whereas in the sliding position the brake arrangement  10  is designed not to brake the ski. 
     The brake arrangement  10  comprises a base  20 . In the embodiment according to the invention, the base is provided in the form of a slide  20  which is fastened to the binding plate  15  and is displaceable in the longitudinal direction of the ski. In addition, in the embodiment described, the slide  20  can be coupled to the binding slide  120  in order to connect the brake arrangement  10  and the heel unit  100  to one another. 
     The brake arrangement  10  further comprises a pedal  30  having a substantially upward-facing step surface  32  for a sole portion of a ski boot. For the purpose of braking the ski, the brake arrangement  10  further comprises at least one brake arm  40 ; in the preferred embodiment of this invention, two brake arms  40  formed symmetrically with respect to a longitudinal axis of the ski are provided. The brake arms  40  are mounted on the base  20  at central portions thereof and are mounted on the pedal  30  at front portions in the longitudinal direction of the ski. In addition, a resilient element is provided which preloads the brake arrangement  10  into the braking position so that the brake arms  40  can engage with the ground in order to brake the ski. The resilient element can be a spring in the conventional sense but can also be provided as a resiliently flexible bracket or the like. In particular, it can act on the brake arm(s)  40  or on the pedal  30 . 
     The brake arrangement  10  further comprises a locking element  60  which is movable between an engaged position and a disengaged position. The locking element  60  is preloaded into the engaged position and, in the engaged position, locks the brake arrangement  10  in the sliding position. The locking element  60  can preferably be arranged on an underside  34  of the pedal  30  and protrude downwards therefrom. It can be mounted on the pedal  30  so as to be pivotable about an axis  64 . The locking element  60  can be preloaded into the engaged position by a second resilient element  66 . In the preferred embodiment, the second resilient element  66  can be a leg spring  66  which is coupled to the pedal  30  and to the locking element  60 . In particular, the locking element  60  can have a hook shape, as can be seen, for example, in  FIG. 1 b   . Such a hook  62  engages with another part of the brake arrangement  10  in the engaged position of the locking element  60  in order to lock the brake arrangement  10  in the sliding position. 
     The brake arrangement  10  further comprises a blocking element  70  which is adjustable between a blocking position and a release position. In the blocking position, the blocking element  70  engages with the locking element  60  in the sliding position of the brake arrangement  10  when the locking element  60  is in the engaged position. In the release position, the blocking element  70  does not engage with the locking element  60 . As a result, the blocking element  70  in the blocking position thereof can block the brake arrangement  10  in the sliding position. This can be done in that the locking element  60 , in particular in the form of the hook  62  in the engaged position, engages with a contour  74  of the blocking element  70  when the blocking element  70  is in the blocking position. 
     The blocking element  70  can be mounted on the brake arrangement  10 , in particular on the base  20 , so as to be rotatable about an axis of rotation X 1  which is substantially perpendicular to a ski plane. As a result, the blocking element  70  can move in a plane that is substantially parallel to a ski plane during an adjustment between the blocking position and the release position. It can also comprise at least one actuating portion  72  and, in the preferred embodiment, comprises an actuating portion  72  on both sides on the left and right in the width direction of the ski, as can be seen, for example, in  FIGS. 1 a  and 6 a   . The actuating portions  72  can move substantially in a transverse direction of the ski during an adjustment of the blocking element  70  between the blocking position and the release position and an associated rotation of the blocking element  70  about the axis of rotation X 1  in the plane that is parallel to the ski plane, which transverse direction of the ski is perpendicular to a longitudinal direction of the ski. They can be pulled or pressed by a user in order to adjust the blocking element  70 . As a result of the rotatable mounting of the blocking element, they move on a circular path, but a relatively large radius of this circular path compared to a width of the brake arrangement  10  in the width direction of the ski results in an almost linear movement in a transverse direction of the ski. The actuating portions  72  may be arranged outside to the left and right with respect to the brake arrangement  10  in the width direction of the ski. 
     Overall, as can be seen in  FIG. 1 a   , among other things, the blocking element  70  can be designed to be substantially T-shaped, wherein the rotatable mounting about the axis of rotation X 1  can be provided on a distal end portion of a longitudinal web and the two actuating portions  72  can be provided on both sides on end portions of a transverse web. The contour  74  of the blocking element  70 , with which the locking element  60 , in particular in the form of the hook  62 , can engage, can be arranged on the transverse web between the two actuating portions  72  and can, for example, be a front edge  74  of the transverse web. A recess  75  can also be provided on the transverse web, into which recess the locking element  60  can protrude so as not to engage with the blocking element  70  when the blocking element  70  is in the release position. 
     An above-described step-in function of the brake arrangement  10  will be explained below with reference to  FIGS. 1 b , 2 b  and 3 b   . In these drawings, the blocking element  70  is shown in the blocking position. During an adjustment of the brake arrangement  10  from the braking position (see  FIG. 1 b   ) into the sliding position (see  FIG. 3 b   ), for example when a user steps on the step surface  32  of the pedal  30  with his ski boot, in order moves the pedal  30  and thus the locking element  60  or the hook  62  in the direction of a ski surface, a slope of the hook in the transition position (see  FIG. 2 b   ) initially strikes the front edge  74  on the transverse web of the blocking element  70 . Against the preloading force of the leg spring  66 , the hook  62  rotates about the axis of rotation  64  away from the transverse web. In the case of a further movement of the pedal  30  and the locking element  60  in the direction of the ski surface, the hook  62  snaps under the transverse web, returns to the engaged position due to the spring preload and thus locks the brake arrangement in the sliding position (see  FIG. 3 b   ). 
       FIG. 4 a    shows what happens when the blocking element  70  is set into the release position. The hook  62  then passes through the recess  75  during the above-described movement of the pedal  30  in the direction of the ski surface and can therefore not engage with the blocking element  70 . In  FIG. 4 b   , in which the blocking element  70  is shown in the blocking position, it can be seen, however, that the hook  62  is locked under the transverse web  74  and is covered thereby. 
     An interaction of the heel unit  100  and the brake arrangement  10  is explained below with reference to  FIGS. 6 a    and  6   b.    
     The blocking element  70  and the binding body  130  are designed such that the blocking element  70  cannot be brought into the blocking position in the moving position of the heel unit  100  due to an interaction between the blocking element  70  and the binding body  130 . This can be achieved in that a lip  132  can be provided on the binding body  130  at the front in the direction of travel, which lip has a contact portion  138 , and in that an extension  76  can be provided on the blocking element  70 , which extension has a contact portion  78 , wherein these two contact portions  78 ,  138  rest against one another in the moving position of the heel unit  100  and form a common stop. This common stop can prevent an adjustment of the blocking element  70  into the blocking position when the heel unit  100  is set into the moving position and the lip  132  and the contact portion  138  of the binding body  130  point forwards in the direction of travel. If, on the other hand, the heel unit  100  is set into the walking position, the contact portion  78  on the extension  78  of the blocking element  70  is spaced apart from the binding body  130 , since the portion on which the lip  132  is provided is rotated away, and the blocking element  70  can be moved into the blocking position.