Patent Application
20240041162
This application claims priority of European patent application No. EP22425034.0 filed Aug. 5, 2022, the content of which is hereby incorporated by reference herein in its entirety.
The invention relates to the field of operating devices configured to tighten a sports shoe/boot around a foot or lower leg of a user. In particular, the invention relates to a ski boot comprising such an operating device.
Sports shoes/boots need both to be comfortable and to allow optimal transmission of impulse from their users. When participating in sport, it is commonplace for phases of relatively intense activity to alternate with weighting or resting phases. The sought-after compromise between the comfort and the performance of sports shoes/boots generally differs according to the phase of use of the sports shoe/boot.
For example, for skiing, users require ski boots that are rigid and fitted tightly around their feet and lower legs when descending snow-covered ski-runs. By contrast, when they are walking around or waiting at mechanical ski lifts, users are more inclined towards comfort.
In order to allow the various different compromises between performance in use and comfort, sports shoes/boots equipped with tightening means that are easy to manipulate are known. In particular, ski boots are generally equipped with tightening buckles connected to a first lever that can be rotated between a closed position and an open position. Ski boots equipped with a device for locking and unlocking the rotation articulation between a lower shell and a cuff, commonly known by the name “ski-walk” are also known. The locking and unlocking device can be actuated via a second lever able to move between a first configuration referred to as the ski configuration, and a second configuration referred to as a walk configuration. The rotation articulation is blocked when the locking device is in the ski configuration but on the other hand released when the locking device is in a walk configuration.
Sports shoes/boots known from the prior art thus require numerous manipulation actions between the various phases of participating in a sport in order to obtain the desired level of performance or comfort. Because of these diverse manipulations, it is often the case that the sports shoes/boots are not used correctly. In particular, in the case of ski boots, users often ski on snowy ski runs with the rotation articulation between the lower shell and the cuff left unlocked. This happens all the more often when, in the case of certain ski boots or for certain users, the blocking or releasing of the rotation articulation is not readily perceivable. Users who forget to lock the rotation articulation have greater difficulty in guiding their skis, leading to a risk of falling and sustaining injury.
Thus, to simplify the manipulation thereof, ski boots equipped with a lever configured to actuate both a means for tightening the sports shoe/boot and a device for locking and unlocking the rotation articulation between a lower shell and a cuff are known, notably from publications EP1915917 or FR2688983: when the user actuates this lever said user acts both on the tightening of the boot/shoe and on the locking and unlocking device. However, such devices are complex and do not fully meet users' expectations.
It is an object of the invention to provide an operating device for a sports shoe/boot that overcomes the above disadvantages and improves the sports shoe/boot tightening devices known from the prior art.
More specifically, a first subject of the invention is an operating device for a sports shoe/boot that is both easy and intuitive to manipulate and allows the user to achieve the best compromise between performance and comfort for each situation.
The invention relates to a sports shoe/boot comprising a lower shell intended to envelop a foot of a user, a cuff intended to envelop a lower leg of the user, and a rotation articulation between the lower shell and the cuff, the sports shoe/boot further comprising an operating device comprising:
the first lever and the second lever being configured to rest one upon the other such that:
The first lever partially can cover the second lever when the first lever and the second lever are in their first position.
The tightening means can be in a configuration of tightly holding the foot or the lower leg of the user when the first lever is in its first position, and it can be in a configuration of releasing the foot or the lower leg of the user when the first lever is in its second position.
The first lever and the second lever can be able to rotate about the one same axis of rotation.
The second lever can comprise a bow provided with two branches extending parallel to one another and the first lever can extend at least partly between the two branches of the second lever.
The first lever can comprise a bow provided with two branches extending parallel to one another, the two branches of the first lever being arranged between the two branches of the second lever, the tightening means comprising a tightening buckle able to engage with a catch and a connecting means fixed to the first lever and to the tightening buckle, said connecting means extending between the two branches of the first lever.
The second lever can comprise a housing inside which the first lever is positioned when the first lever is in its first position, and/or the first lever can comprise a housing inside which the second lever is positioned when the first lever is in its first position.
The first lever can be able to rotate about a first axis of rotation and the tightening means can comprise a tightening buckle fixed to the first lever about a second axis of rotation distinct from the first axis of rotation.
The second lever can be able to rotate about a first axis of rotation and the operating device can comprise a wire intended to actuate said sports shoe/boot locking device, the wire being fixed to the second lever at a point distinct from the axis of rotation.
The sports shoe/boot can have three configurations of operation:
The first lever can comprise a first manipulation surface configured to allow a user to move the first lever from its second position to its first position, and a second manipulation surface configured to allow the user to move the first lever from its first position to its second position.
The second lever can comprise a first manipulation surface configured to allow the user to move the second lever from its second position to its first position, and a second manipulation surface configured to allow the user to move the second lever from its first position to its second position.
The sports shoe/boot can further comprise a pressing element able to move between a first position and a second position, the pressing element being intended to apply pressure to the foot or the lower leg of the user when it is in its first position, the pressing element being intended to adopt a retracted position relative to the foot or to the lower leg of the user when it is in its second position, the second lever being connected to the pressing element such that:
The operating device can be fixed to a wall of the sports shoe/boot, and the first lever can extend against the wall or against the second lever when it is in its first position, the first lever comprising a manipulation surface configured to allow the user to move the first lever from its first position to its second position, the manipulation surface of the first lever being positioned so that it is spaced away from said wall or from the second lever when the first lever is in its first position.
The second lever can extend against a wall or against the first lever when it is in its first position, the second lever comprising a manipulation surface that is configured to allow the user to move the second lever from its first position to its second position, the manipulation surface of the second lever being positioned so that it is spaced away from said wall or from the first lever when the second lever is in its first position.
The sports shoe/boot can be a ski boot.
The invention also relates to a sports shoe/boot comprising a lower shell intended to envelop a foot of a user, a cuff intended to envelop a lower leg of the user, and a rotation articulation between the lower shell and the cuff, the sports shoe/boot further comprising an operating device comprising:
The invention also relates to an operating device for a sports shoe/boot comprising:
the first lever and the second lever being configured to rest one upon the other such that:
The objects, features and advantages of the present invention will be explained in detail in the following description of two particular embodiments given by way of nonlimiting example with reference to the attached figures among which:
The operating device 5 comprises a tightening means 6 intended to tighten the shoe/boot around the foot or the lower leg of the user. In particular, according to the embodiment described, the tightening means 6 is configured to tighten the cuff 3 of the ski boot around the lower leg. The operating device 5 is fixed to a wall 7 of the cuff 3. In particular, the wall 7 of the cuff forms a first flap of the cuff. The tightening means 6 collaborates with a catch, notably a tooth catch 8 arranged on a second flap of the cuff. The tightening means 6 thus, when in a tightened configuration, allows the two flaps of the cuff to be pulled closer together thereby allowing the cuffs to be tightened around the lower leg of the user. The user is thus able to effectively transmit impulses from themself to a gliding board fixed to the ski boot. The tightening means 6 is able to move between its tightened configuration and a released configuration in which the two flaps are further apart from one another, making it possible to relieve the compression of the lower leg, and also making stepping in and inserting the foot into the boot easier. As an alternative, the tightening means 6 can also be configured to tighten the lower shell 2 around the foot of the user. As is clearly visible in
The ski boot further comprises a locking device 10 locking the rotation articulation 4 of the cuff on the lower shell. The locking device is able to lock, which is to say block, the rotation articulation 4 when this device is in a first configuration, referred to as the ski configuration, and is able to release the rotation articulation 4 when it is in a second configuration, referred to as the walk configuration. By way of example, the locking device 10 may comprise a latch articulated relative to the cuff. When the locking device 10 is in its first configuration, the latch is able to collaborate with an opening or with a relief arranged in the lower shell in order to block the rotation articulation 4. When the locking device is in its second configuration, the latch is able to adopt a retracted position relative to said opening or to said relief so as to release the rotation articulation 4.
The locking device 10 constitutes an accessory of the ski boot which accessory is intended to make walking easier when in its walk configuration. As an alternative or in addition, the ski boot could comprise other accessories comprising an element able to move between a first position and a second position. According to one embodiment which has not been depicted, the ski boot may comprise a pressing element able to move between a first position and a second position. The pressing element is then intended to press against the foot or the lower leg of the user when it is in its first position, and to adopt a retracted position relative to the foot or to the lower leg when in its second position. This pressing element may notably be positioned toward the top, at the back of the cuff 3 of the ski boot. When the pressing element is in its first position, it contributes to firmly holding the lower leg, allowing precise guidance of the gliding board fixed to the ski boot. When the pressing element is in its second position, it adopts a position away from the lower leg, allowing the ankle of the user a certain mobility within the ski boot, thus making walking easier. The pressing element also constitutes an accessory of the ski boot which accessory is intended to make walking easier when in its retracted position.
As detailed hereinafter, the operating device 5 is configured to actuate the tightening means 6 and also an accessory of the ski boot, for example the locking device 10.
The operating device 5 also comprises a first lever 14 and a second lever 15 distinct from the first lever. Each of the two levers 14 and 15 is able to move reversibly between a first position and a second position. According to the embodiment depicted, the first position is a closed position, as depicted in
The first lever 14 is configured to actuate the tightening means 6. Therefore the first lever is connected to the tightening means 6. In particular, the first lever 14 is connected to the tightening means 6 in such a way that the tightening means 6 is in a tightened configuration when the first lever 14 is in the closed position and so that the tightening means 6 is in the released configuration when the first lever 14 is in the open position. The second lever 15 is configured to actuate at least one accessory of the shoe/boot, notably the locking device 10. Therefore the second lever is connected to said accessory of the shoe/boot. In particular, the second lever 15 is connected to the locking device 10 such that the locking device 10 is in the ski configuration when the second lever 15 is in the closed position and such that the locking device 10 is in the walk configuration when the second lever 15 is in the open position. The second lever 15 is configured to actuate an accessory independent of the tightening means 6.
The levers 14 and 15 are members of the operating device 5 that are intended to be manipulated by hand. Thus they each comprise at least one manipulation surface configured to allow a user to move them between their open position and their closed position. The first lever 14 and the second lever 15 are configured to rest one upon the other such that when the first lever 14 is in the closed position, the second lever 15 is automatically in the closed position. Likewise, when the second lever 15 is in the open position, the first lever 14 is automatically in the open position. In other words, the closing of the first lever 14 automatically leads to the closing of the second lever 15, and the opening of the second lever 15 automatically leads to the opening of the first lever 14. Therefore, when the tightening device 6 is in the tightened configuration, the locking device 10 is automatically in the ski configuration. This makes it possible to avoid the user skiing with the articulation between the lower shell and the cuff unlocked, something which would lead to imprecise guidance of the gliding board. Likewise, this also allows the tightening means 6 to be loosened automatically when the locking device is moved into the walk configuration.
As an alternative or in addition, the second lever 15 could be configured to actuate any other accessory of the shoe/boot, notably a mobile pressing element, or even one or more additional tightening devices 9. If the second lever 15 is configured to actuate a pressing element as described hereinabove, then the second lever is connected to this element such that when the second lever is in the closed position, the pressing element is in the position of pressing against the foot or the lower leg of the user, and when the second lever is in the open position, the pressing element is in its retracted position. If the second lever 15 is configured to actuate an additional tightening device 9, then the second lever is connected to this additional tightening device such that when the second lever is in the closed position, the additional tightening device is in a configuration tightly holding the foot or the lower leg of the user and when the second lever is in the open position, the additional tightening device is in a configuration of releasing the foot or the lower leg of the user.
The first lever 14 comprises a first manipulation surface 16 configured to allow a user to move it from its open position to its closed position, and a second manipulation surface 17 configured to allow the user to move it from its closed position to its open position. In this particular instance, the first manipulation surface 16 and the second manipulation surface 17 are arranged on two opposite faces of the first lever 14. When the first lever 14 is in the closed position, the first manipulation surface 16 faces towards the outside of the shoe/boot and the second manipulation surface 17 faces towards the wall 7 of the cuff. The first manipulation surface 16 is configured to be pushed by the user against the wall 7 of the cuff, which is to say towards the foot or the lower leg of the user. The second manipulation surface 17 is configured to move it away from the wall 7 of the cuff, which is to say be pulled by the user towards the outside of the foot or of the lower leg of the user.
Likewise, the second lever 15 comprises a first manipulation surface 18 configured to allow the user to move it from its open position to its closed position, and a second manipulation surface 19 configured to allow the user to move it from its closed position to its open position. The first manipulation surface 18 and the second manipulation surface 19 are arranged on two opposite faces of the second lever 15. When the second lever is in the closed position, the first manipulation surface 18 faces towards the outside of the shoe/boot and the second manipulation surface 19 faces towards the wall 7. The first manipulation surface 18 of the second lever 15 is configured to be pushed by the user against the wall 7 of the cuff, which is to say towards the foot or the lower leg of the user. The second manipulation surface 19 of the second lever 15 is configured to move it away from the wall 7 of the cuff, which is to say to be pulled by the user towards the outside of the foot or of the lower leg of the user. The second manipulation surfaces 17 and 19 of each lever 14, 15 extend in planes that are inclined with respect to the wall 7 on which the operating device is fixed. Thus, these second manipulation surfaces 17 and 19 are positioned spaced away from said wall 7 when the second lever is in the closed position, making them easier to clasp. Specifically, the user can more easily insert their fingertips between the second manipulation surfaces 17 and 19 and the wall 7, even when wearing gloves.
As is clearly visible in
When the two levers 14, 15 are in the open position and the first lever is manipulated in the direction for closing, the first lever presses on the second lever (notably the first part of the first lever presses on the first part of the second lever). The force applied to the first lever in order to close it is thus transmitted to the second lever, allowing both levers to move simultaneously into the closed position. Likewise, when the two levers 14, 15 are in the closed position and the second lever is manipulated in the direction of opening, the second lever presses on the first lever (notably the first part of the second lever presses on the first part of the first lever). The force applied to the second lever is thus transmitted to the first lever allowing both levers to pass simultaneously into the open position. In addition, the operating device 5 is also configured such that the first lever 14 can be actuated independently of the second lever 15 when the latter is in the closed position. Likewise, the operating device 5 is also configured so that the second lever 15 can be actuated independently of the first lever 14 when the latter is in the open position. The operating device thus comprises three configurations of operation:
At any moment, the user can pass directly from one configuration to another. In particular, it is possible through a single action for the user to pass from the first configuration to the second configuration, or from the second configuration to the first configuration, without passing through the first configuration.
The first lever 14 and the second lever 15 are both able to rotate relative to the baseplate 11 about the one same first axis of rotation Z1. This first axis of rotation Z1 may be oriented at least roughly vertically when the operating device is fixed to a ski boot resting on the horizontal ground.
The first lever 14 comprises the form of a bow, or in other words is U-shaped. It comprises two branches 20 together connected to a common base 21. As an alternative, the first lever could adopt a different shape, notably a shape that is rectangular overall and/or that does not have an opening. The bow shape of the first lever nevertheless makes it lighter in weight. The first axis of rotation Z1 is positioned substantially at one end of each branch 20, the opposite end from the base 21. The first manipulation surface 16 may be formed on external faces of the branches 20 and/or of the base 21. The second manipulation surface 17 of the first lever 14 may be formed on an internal face of the base 21 and/or of the branches 20, more specifically at a corner of the first lever where a branch 20 meets the base 21. The second manipulation surface 17 is advantageously positioned at the opposite end of the first lever 14 from the first axis of rotation Z1, so as to offer the user a long lever arm for the operation of opening of the first lever 14.
Likewise, the second lever 15 (clearly visible in
The first lever 14 extends at least in part between the two branches 22 of the second lever 15. In particular, the two branches 20 of the first lever extend parallel to the branches 22 of the second lever but are not as far apart from one another as the two branches 22 of the second lever 15. The baseplate 11 comprises two bearings 25 through each of which there passes a shaft 26. Each shaft 26 collaborates both with an opening at the end of one branch 20 of the first lever and with an opening at the end of one branch 22 of the second lever. Each bearing extends into a gap formed between one branch 20 of the first lever and one branch 22 of the second lever.
The pressing surface via which the first lever presses against the second lever may extend over an internal face of part of the branches 20 and/or of the base 21. The pressing surface via which the second lever presses against the first lever may extend over an external face of part of the branches 22, of the base 23 and/or of the transverse element 24. Advantageously, the second lever 15 comprises a housing 27, or in other words a recess, inside which the first lever 14 is positioned when it is in the closed position. The housing 27 may be obtained by a locally reduced thickness of the second lever. The presence of this housing 27 allows the first lever to maintain the correct position relative to the second lever and allows optimal transmission of pressure between the two levers as they are manipulated. Further, it makes it possible to keep the operating device more compact. Alternatively, the housing or recess 27 could be formed in the first lever. In a variant form of embodiment of the invention, a small amount of interference could be established between the first lever and the second lever when they are pressing against one another. Thus, the two levers may remain secure to one another when nested one inside the other. Light pressure on the part of the user may then suffice to disconnect the two levers so that they can be manipulated separately.
The first lever 14 and the second lever 15 may advantageously be single-piece components. As a preference, they may also be machined metal components. Alternatively, they may be made of plastic, possibly with an internal metal insert to improve strength and stiffness. The levers 14, 15 may be manufactured for example by machining, by moulding or else by an additive manufacturing method.
With reference to
As is clearly visible in
When the second lever 15 is in the closed position, the wire 35 may project overall in the direction in which the second lever extends from the axis of rotation Z1, which is to say in the opposite direction to the direction in which the tightening device extends. The direction in which the wire extends may be dictated by the position of the accessory controlled by the wire and/or by the position of a means for guiding the wire, such as a sheath or a pulley. Thus, according to the embodiment depicted, rotation of the second lever from its closed position to its open position causes the wire 35 to become tensioned. In a variant embodiment, the wire 35 could project from the second lever in a different direction so that it is the rotation of the second lever from its open position to its closed position that causes the wire 35 to become tensioned.
In order to use the operating device that has just been described, a user may proceed as follows. Having inserted their foot into the shoe/boot they may allow the first lever and the second lever to move into the open position. Thus, the lower leg is held only loosely if at all and the locking device 10 does not block the rotation articulation between the lower shell and the cuff. Thus, the user can comfortably walk around and/or wait. When the user is ready to ski, they may close the first lever 14 by pressing on the zone 16 intended for grasping. The first lever pivots about the axis of rotation Z1. The rotation of the first lever tends to move the second axis of rotation Z2, causing the tightening buckle 28 to tighten onto the set of ratchet teeth 8. At the same time, the first lever 14 presses against the second lever 15 which likewise pivots about the axis of rotation Z1 and moves automatically into the closed position. The rotation of the second lever 15 causes the anchor point of the wire 35 to move, reducing the tension in the wire, allowing the accessory to which it is connected to be activated. Advantageously, the accessory may comprise an internal return means so that it switches configuration when the tension in the wire 35 decreases. Thus, in a single action, the user is able to actuate the tightening device 6 and the accessory connected to the second lever. In particular, in instances in which said accessory corresponds to said locking device 10, the user automatically achieves locking of the rotation articulation between the lower shell and the cuff, allowing precise guidance of the skis. This then prevents the user from skiing with a rotation articulation between the lower shell and the cuff unlocked. Thus, tightening of the tightening device 6 necessary involves activating the locking mechanism that locks the cuff to the lower shell. The force required to cause the first lever and the second lever to pivot from their open position to their closed position increases first of all, then reaches a maximum value during the course of the travel, and then starts to decrease again. Thus, the open position and the closed position of the levers 14, 15 are stable positions.
Next, during a subsequent phase of resting, the user may pull on the second surface 19 intended for clasping so as to open the second lever. In doing so, the wire 35 becomes tensioned and actuates the accessory into a new configuration. The opening of the second lever automatically leads to the opening of the first lever. Once again, a single action on the part of the user is enough to slacken the tightening device and actuate the accessory simultaneously or near-simultaneously. If the user so desires, they may also use the ski boot in an intermediate configuration in which the first lever is in the open position and the second lever is in the closed position. For that, from the position in which the first lever and the second lever are closed, the user may simply pull on the surface 17 intended for clasping. Alternatively, starting from the position in which the two levers 14 and 15 are open, the user may simply push on the surface 18 of the second lever that is intended for clasping. The operating device thus allows the shoe/boot to be used in three distinct configurations. Assuming that said accessory is a locking device 10, the user may use the shoe/boot with blocking of the rotation articulation between the lower shell and the cuff, and with the tightening device 6 slackened. This allows skiing, which while admittedly less precise is nevertheless more comfortable. Such a configuration is also particularly useful when the user is using a lift such as a chairlift or a ski lift. Specifically, on the one hand, the slackening of the cuff provides the user with some relief when using the lift. On the other hand, the blocking of the rotation articulation makes it possible to maintain enough guidance of the gliding board to keep the use of the lift safe. In particular, the blocking of the rotation articulation allows the user sufficient guidance of the gliding board during the phase of leaving the chairlift during which phase the user leaves the chairlift and/or while the user is being pulled along by a ski lift bar.
According to an alternative form of embodiment, the functions of the first lever and of the second lever could be reversed, which is to say that it is the first lever that would then control said accessory and the second lever that would control the tightening device.
The invention thus provides a ski boot that is practical and easy to use. Its user can easily adapt the compromise between comfort and use performance. Finally, this invention set out in the context of a ski boot could be reapplied to a sports shoe/boot of different construction, notably a sports shoe/boot that is not necessarily a ski boot and/or that does not necessarily comprise a lower shell and a cuff articulated in rotation about the lower shell.
| Number | Date | Country | Kind |
|---|---|---|---|
| 22425034.0 | Aug 2022 | EP | regional |
