Classifications

• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C9/00—Ski bindings
  • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
  • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
  • A63C9/0841—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable with a single jaw
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C9/00—Ski bindings
  • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
  • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
  • A63C9/0846—Details of the release or step-in mechanism
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C9/00—Ski bindings
  • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
  • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
  • A63C9/0847—Details of the manual release
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C9/00—Ski bindings
  • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
  • A63C9/088—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with electronically controlled locking devices

Definitions

• the invention relates to a heel piece of a ski safety binding, according to the preamble of claim 1.
• Heel shoes of this type can be opened for example using a manual actuation lever with minimal effort, by first decoupling the sole jaw from the spring device which normally urges it in the closing direction. Therefore, during such manual release the sole jaw can be tilted into the open position, without having to overcome to do this the relatively high restoring force applied by the spring device. As soon as the heel piece is closed again and the forced closure between the sole jaw and the spring loaded return cam is restored, the heel piece again performs the usual function of maintenance at the same time as a reliable safety release .
• a latching member loaded by the spring device is supported on a sliding rail provided with a climax, the sliding rail being provided on an oscillating connecting rod concentric with the jaw sole.
• the oscillating connecting rod and the sole jaw are in mutual contact along a circular path eccentric relative to the pivot axis and sole.
• There is a ball blocker on the oscillating rod which acts between the latter and the sole jaw, and which blocks when the sole jaw is loaded in the opening direction, provided that the sole jaw has already reached its starting rotary position relative to the oscillating rod.
• the ball blocker can be released by means of a manual actuation lever.
• the object of the invention is therefore to produce a ski safety binding heel of the type mentioned at the start and improved, which can in particular also always be closed without problem and reliably while maintaining the possibility of manual release. or arbitrary under low effort and thanks to which the desired recall or maintenance function is ensured even when the sole jaw pushed into the closed position does not reach a predetermined final position, while preserving a reliable release in safety.
• the elements indicated in the characterizing part of claim 1 are provided.
• the circular or semi-circular bearing surface is formed concentric with the axis of the cam and the sole jaw, the locking member being forced elastically into the current locking position regardless of the current relative rotational position of the sole jaw relative to the return cam is constantly supported on this surface, which ensures the blocking effect.
• the unidirectional blocker blocks almost immediately in any relative position in rotation of the sole jaw as soon as the latter is biased in the opening direction.
• the sole jaw may therefore not be completely pressed down, for example because of the presence of ice on the surface of the ski or of the sole or because of a sole thickness which deviates from the standard, but the heel is able to function perfectly, that is to say that the desired recall and maintenance function is ensured, as is the possibility of a safety release in this case also.
• the locking member slides without force transmission along the bearing surface of circular or semi-circular shape, so that the sole jaw can be brought into the closed position with little effort when the blocker is released. It is therefore not in particular necessary, during this closing movement, to overcome the relatively high spring force applied by the spring device. Finally, arbitrary or manual release is also possible at using a reduced effort by avoiding the action of the spring device. For this it is simply necessary to release the blocking member in question against a weak spring force.
• the basic idea of the invention is to take measures so that the sole jaw can tilt in the closing direction practically freely relative to the return cam urged by the spring device, but either a bias in the opening direction, coupled to the cam loaded by a spring which ensures the return and a safety release, and this immediately and in particular substantially independently of the current position in relative rotation.
• the unidirectional blocker can be released against a weak spring force and that the arbitrary opening of the heel is thus possible only by means of a reduced effort avoiding the action of the spring device.
• the desired release characteristic is therefore also maintained even in the case where the sole jaw cannot be fully pushed into its predetermined closed position, for example due to the formation of ice. If the sole jaw is prevented from tilting into its final position, for example due to ice or snow between the ski boot and the ski, and the snow or ice melts in use, the unidirectional blocker which acts practically as a free drive allows the sole holding jaw to be automatically adjusted in the direction of the rotary position predetermined final thanks to the pressure of the ski boot without any adjustment of the cam and therefore of the release characteristic.
• the unidirectional blocker is produced in the form of a unidirectional friction blocker.
• a possibility mentioned in claim 3 consists in that the unidirectional blocker with friction locking comprises at least one locking pawl pivotally mounted on the sole jaw and the bearing face is a substantially smooth bearing surface. formed on the return cam.
• Another possibility mentioned in claim 4 consists in that the unidirectional blocker with friction blocking is produced in the form of a unidirectional blocker with roller comprising at least one roller or a blocking ball.
• the locking pawl is pivotally mounted on the sole jaw and that the bearing and sliding surface serving as a counter-surface. is substantially smooth and formed on the return cam. It is however in principle possible to provide a construction of the heel piece in which the pivoting locking pawl is mounted on the return cam and the substantially smooth bearing surface forming the counter-surface is formed on the sole jaw. In this case, however, it will be noted that the unidirectional blocker blocks when the heel piece is biased in the opening direction and allows free tilting of the sole jaw in the closing direction, in the manner of a free drive. In claim 4 is also indicated a preferred alternative embodiment for the case where a unidirectional roller blocker is used.
• the locking rollers can for example be made of ceramic or steel.
• a single blocking roller will generally suffice, while in the case of steel rollers it is preferably provided at least two blocking rollers opposite to each other or arranged symmetrically. It is then taken into account that ceramic rollers are significantly harder and more resistant than steel rollers and that it is therefore appropriate to distribute the pressure between a greater number of symmetrically arranged rollers, in particular in the case of rollers in steel.
• a variant of a heel piece equipped with a unidirectional blocker with friction locking and with a rolling body is indicated in claim 6.
• the sole jaw and the return cam a kind of arrangement. free travel which, if the sole jaw is pressed in the opening direction, is immediately blocked independently from the actual pivoting position of the sole jaw, while the latter is released in the event of a given stress in the closing direction, exerted for example by the ski boot, as well as in the case of '' voluntary release from the heel.
• the roller cage is always pivoted together with the sole jaw around the axis of the cam and the sole jaw, and that the locking roller is movable relative to the roller cage, for example for voluntary release and preferably against a slight spring force.
• unidirectional blocker instead of the unidirectional blocker it is also possible to use a unidirectional ratchet blocker in which the blocking pawl has a tooth and the bearing face of the return cam has a toothed sector, as provided for in claim 8.
• a slight play is observed, corresponding to the interval between the teeth of the toothed sector. , but which in most practical applications does not result in a disadvantage.
• the sole jaw can be tilted without opening direction problem after the unidirectional blocker has been released.
• the means for releasing the unidirectional friction blocker can be manually actuated independently of the actuation lever provided only as an option and coupled to the sole jaw.
• the manual actuation lever insofar as it is provided, can be actuated in the opening direction as desired, either usually in the face of the spring force applied by the spring device, or by avoiding this spring force when the unidirectional friction blocker is released.
• a push button, an electronic circuit device and / or the like can be provided, for example.
• the drive of the sole jaw by the manual actuation lever can also occur in a delayed manner so that before such training, at the start of the actuation of the lever, the blocker unidirectional friction is first released. In this case also, it can again be provided as an option to allow the release of the unidirectional friction blocker for opening the heel.
• the manual actuation lever and the sole jaw are suitably constantly pretended in a rotary starting position in which the friction blocker is not yet released.
• the sole jaw can also be pivoted in closing direction by means of the manual actuation lever.
• the respective drive member provided on the manual actuation lever, can be used both for driving the sole jaw and for release of the friction blocker.
• the locking roller in question can advantageously be connected to the manual actuation lever and be resiliently held by the latter in the current locking position, as indicated in claim 14. From fact that the locking roller is fixed on the manual actuation lever and that this can pivot around the axis of the cam and the sole jaw, it is simultaneously ensured that the locking roller is guided on a circular path concentric with the bearing and sliding surface and therefore either constantly in contact with this counter-surface or at the shortest possible distance from it. This again ensures that immediate locking is possible at any time, regardless of the current relative rotational position of the sole jaw.
• the sole jaw can be slightly pretended in the opening direction, whereby the sole jaw is automatically rotated into the open position as soon as the one-way friction blocker is released. For this, one can for example provide a spring between the sole jaw and the base body.
• the sole jaw is automatically decoupled from the return cam as soon as the sole jaw has reached, in particular in the event of a fall before, a rotational position such that the ski boot is released.
• the return cam can return to its starting rotation position, without thereby driving the sole jaw, which facilitates the new introduction into the heel.
• the fact that the control surface of the return cam which is biased by the spring is produced without a climax, the possibility is reached that the closing of the heel piece also always occurs under reduced force by avoiding the relatively high spring force applied by the spring device.
• the return cam is first immediately recalled again by the spring device, as well as the sole jaw by means of the return cam.
• the unidirectional blocker acting as free drive must then be released, which is possible with an extremely reduced effort. To do this, it suffices to overcome the weak spring force which urges the locking member in question.
• the sole jaw can then be swung up effortlessly. While the sole shoe also, an influence of the cam as well as the spring device which requests it is excluded thanks to the free drive provided between the sole shoe and the cam in the form of the unidirectional blocker.
• the sole jaw can be pretended in the opening direction by means of a rocking mechanism or the like, whereby it is obtained, after release of the one-way blocker, that the sole jaw is brought automatically into its final open position and be maintained in this position, for example by means of a slight spring force.
• the sole jaw can also be pretended in the closed position, preferably by means of the same rocking mechanism, whereby obtains automatic monitoring of the adjustment of the heel, in particular in the case where a layer of ice or snow present between the boot and the ski thins for example under the pressure exerted or under the stresses due to vibrations and shocks.
• Fig. 1 is a schematic sectional representation of a safety heel piece comprising a unidirectional friction blocker in the form of a ratchet blocker, in the closed position,
• Fig. 2 the heel piece shown in FIG. 1 when the sole jaw is stressed by the ski boot in the opening direction
• FIG. 3 the heel piece shown in FIG. 1, just before an arbitrary release by means of the manual actuation lever, the sole jaw being still in its closed position,
• FIG. 4 the heel piece of FIG. 1 after manual release with the sole jaw pivoted in the open position
• Fig. 5 a top view and in horizontal section of the heel piece of FIG. 1,
• Fig. 6 a part of another alternative embodiment of the heel piece comprising a unidirectional blocker with bearing, relating to the unidirectional friction blocker,
• Fig. 7 a schematic sectional representation of another alternative embodiment of a safety heel fitted with a blocker unidirectional with rolling body, in the closed position
• Fig. 8 the heel piece of FIG. 7, in which the sole jaw is biased by the ski boot in the opening direction
• Fig. 12 a schematic representation of the additional rocking mechanism provided in the heel piece of FIG. 7,
• Fig. 13 a schematic sectional representation similar to FIG. 7 of another alternative embodiment of a safety heel fitted with a unidirectional blocker with toothed ratchet, in the closed position, and
• FIG. 14 a detail of a variant of the embodiment of FIG. 13.
• Figures 1 to 5 show a heel piece 10 of a ski safety binding, which comprises a base body 14 suitable for being fixed to the ski 12 and on which is pivotally mounted a sole jaw 16 around a transverse axis A , the sole jaw being engaged by the sole 18 of a ski boot 20 (see FIG. 2).
• a sole support clip downwards 22 and a support tab 24 are provided on the sole jaw 16.
• a return cam 26 is pivotally mounted about the same axis A on the base body 14.
• the cam is biased in the starting position illustrated in FIGS. 1 and 3 to 5 by a spring device 28 comprising a thrust spring 30.
• the spring 30 is supported on a first spring support 32 at the end remote from the return cam 26, the support being produced in the form of a cup-shaped adjusting screw provided with an external thread 34 which cooperates with an internal thread 36 of a cylindrical bore 38 in the base body 14 (see in particular Fig. 1 and 2).
• the opposite end of the thrust spring 30, adjacent to the return cam 26, is supported on a second spring support 40 also in the form of a cup and guided in the cylindrical bore 38 in the manner of a piston.
• the return cam 26 has a semicircular part 44 having a plane control surface part 46, against which the second spring support 40 guided in the manner of a piston presses flat by its front face 42 (see Fig. L bis 3) when the return cam 26 is not stressed by the sole jaw 16 (see in particular Fig. 1 and 3 to 5).
• the axis A of the cam and of the sole jaw is received in two side walls spaced from one another 48, 50 of the base body 14.
• the sole jaw 16 pivotally mounted about the same axis A on the base body 14 has in longitudinal section a U-shape, the two arms 52, 54 of which are arranged inside the two side walls 48, 50 of the base body 14 which are parallel to them and are pivotally mounted on the end zones of the return cam 26.
• the return cam 26 is cylindrical, with the exception of the semi-cylindrical central part 44.
• a manual actuation lever 64 used for manual release of the heel piece 10 which also has a U-shaped longitudinal section, is pivotally mounted by its two arms 56, 58 disposed between the side walls 48 , 50 and the arms 52, 54 on the end zones of the cylindrical return cam 26 and therefore in turn in rotation about the common axis A (see in particular Fig. 5).
• a unidirectional friction blocker produced in the form of a ratchet blocker 60 'comprising at least one blocking pawl 62 • as • a blocking member is mounted between the sole jaw 16 and the return cam 26 pivoting around the same axis A (Figs. 1 to 5).
• This ratchet blocker 60 ' is produced in such a way that it blocks in the event of a stress on the sole jaw 16 in the opening direction and in the present embodiment can be released by means of the manual actuation lever. 64 against a weak spring force applied by a spring member 66.
• the locking pawl 62 ′ is pivotally mounted on the sole jaw 16. It is held by the spring 66 in engagement against a substantially smooth bearing surface 68 of the return cam 26.
• This bearing surface 68 which serves as a counter surface for the locking pawl 62 "which is constantly elastically forced into the current locking position between the return cam 26 and the sole jaw 16, is produced in circular or semi-circular form and concentric with the axis A of the cam and the sole jaw.
• the locking pawl 62 's * presses with friction locking on this circular or semicircular counter-surface 68 concentric with the axis A of the cam and of the sole jaw A when the sole jaw 16 is biased in the opening direction, while it is constantly in sliding contact on this surface 68 when the sole jaw 16 is biased in the closing direction, substantially independently of the current relative rotational position of the sole jaw 16 relative to to the return cam 26.
• the manual actuation lever 64 is used both for driving the sole jaw 16 towards the open or closed position and for releasing the blocker unidirectional friction produced as a ratchet blocker 60 '.
• a drive member 76 which is produced in the form of a cylindrical rod and rigidly connected to the lever, and which is mounted in the two arms 56, 58 of the lever d 'manual actuation 64 and passes through openings 78 mutually aligned in the arms 52, 54 of the sole holding jaw 16 (see for example Fig. 5).
• the opening section of the openings 78 provided in the sole jaw 16 is greater than the section of the cylindrical drive member 76 which passes through these openings 78.
• the locking pawl 62 ′ of the unidirectional friction blocker produced in the form of a ratchet blocker is also released by a corresponding stress.
• the locking pawl 62 ' covers the two openings 78 as far as during a tilting of the manual actuation lever 64 in the opening direction by means of the drive member 76, the locking pawl 62 'is firstly lifted from the bearing surface 68 of the return cam 26 and the sole jaw 16 is then driven in the opening direction with a corresponding delay (see for example Fig. 3 and 4).
• the opening section of the openings 78 must therefore be dimensioned in such a way that when the lever 64 is actuated in the opening direction by the drive member 76 the locking pawl 62 ′ can firstly be released and the sole jaw 16 can then be driven after a corresponding delay.
• the manual actuation lever 64 and the sole jaw 16 are moreover coupled by means of a spring member 74 and pretended by the latter towards a relative rotary starting position, in which the ratchet blocker 60 'n' is not yet released (see for example Fig. 1).
• the release of the unidirectional blocker occurs in all cases by means of the manual actuation lever 64, one can also in principle provide means by which the unidirectional blocker can be released independently of the lever manual actuation provided optionally coupled to the sole jaw 16.
• the sole jaw 16 can in principle also be slightly pretended in the opening direction, so that the latter is automatically tilted to its open position after release of the unidirectional blocker, if necessary under the drive of the manual actuation lever 64.
• Fig. 6 shows part of another alternative embodiment of the heel piece showing the unidirectional friction blocker, which does not differ in practice from the alternative embodiment of FIGS. 1 to 5 that in that a unidirectional blocker with bearing 60 "is provided as a unidirectional friction blocker, instead of the ratchet blocker, with at least one blocking roller 62".
• the bearing surface 68 of circular or semi-circular shape is substantially smooth and provided for example on the return cam 26.
• the counter-surface 70 concentric with the return cam 26 provided on the sole jaw 16 is produced in planar form and inclined by with respect to the tangent T of the bearing surface 68 passing through the point of contact B with the locking roller 62 ".
• this counter-surface 70 can also in principle be curved eccentrically.
• the locking roller 62 is connected to the manual actuation lever 64 (see also Fig. 1 to 3), which can pivot around the axis A of the cam and the sole jaw and is coupled to the jaw of sole 16 via the spring member 74.
• the blocking roller 62 " constantly pushed elastically into the intermediate space 72 which narrows on one side in the manner of a wedge, is guided on a circular path K concentric with the axis A of the cam and sole jaw, from which it follows that the locking roller 62 "is always in contact with the bearing surface 68 of circular or semi-circular shape concentric with the axis A.
• the blocking roller 62 can for example be made of ceramic, or be covered with ceramic, or even be made of steel. In the case of a ceramic 62 "blocking roller, one roller is generally sufficient. If the rollers are made of steel, at least two blocking rollers 62" are provided opposite to each other or arranged symmetrically. The pressure will then be distributed between a larger number of symmetrically arranged rollers.
• Fig. 6 the counter-surface 70 of the sole jaw 16 is shown in solid lines for ceramic blocking rollers and the counter-surface 70 'in dashes for steel rollers.
• the angle of conicity is defined as the angle ⁇ between the normal N to the bearing and sliding surface 68 at the point of contact B with the locking roller 62 "and the junction line V between the two points of contact B, C of the blocking roller 62 “with the bearing and sliding surface 68 and with the counter surface 70 or 70 '.
• the tangent of this angle ⁇ is approximately 0.3 in the present embodiment, and approximately 0.1 in the case of steel rollers.
• the heel piece according to the invention operates as follows:
• the sole jaw 16, as well as the manual actuation lever 64, are held by the spring 74 in their relative rotary starting position, in which the drive member 76 is in contact with the edge of the opening. 78 remote from the blocking member 62 'and is thus released from the blocking member 62'.
• the sole jaw 16 is biased on the ski boot 20 in the opening direction and tilted upwards out of the final position.
• the manual actuation lever 64 is then driven by the sole jaw 16. Thanks to the spring 74, the drive member 76 remains in contact with the edge of the openings 78 of the sole jaw 16 remote from the member. blocking 62 '.
• the unidirectional friction blocker 60 ' is blocked, which results in the return cam 26 also being pivoted, in the opening direction around the common axis A, with the sole jaw 16 against spring force relatively high applied by the support spring 30 of the spring device 28.
• Fig. 3 the heel piece is shown in a position immediately before an arbitrary release by means of the manual actuation lever 64.
• This manual actuation lever 64 is then already tilted or pushed so far down in the direction of the arrow that the locking pawl 62 'is lifted from the bearing surface 68 by means of the drive member 76 and the unidirectional friction blocker 60 produced in the form of a ratchet blocker is therefore released.
• the manual actuation lever 64 is completely pushed back down into its open position, in which it is directed generally parallel to the ski 12.
• the return cam 26 then takes its rotary starting position, the jaw of sole 16 driven by the lever has reached its open position.
• the heel is then closed again by tilting the sole jaw 16 downwards in the closing direction, for example by means of the ski boot and / or the lever.
• the blocking member 62 ′ of the unidirectional friction blocker 60 • operating in the manner of a free drive slides along the bearing surface of circular or semi-circular shape concentric with the axis A.
• the manual actuation lever 64 further coupled to the sole jaw via the spring 74 is driven, provided that manual actuation of this lever does not occur simultaneously .
• the unidirectional friction blocker can block at any time, i.e. independently of the current relative rotation position of the jaw sole 16, as soon as a corresponding stress appears on the sole jaw in the opening direction. Locking is thus possible in particular even if the sole jaw 16 cannot be completely tilted down to its final closed position, for example due to ice or snow caught between the sole of the shoe and the surface of the shoe. ski.
• the return cam 26 is also always tilted against the spring force of the support spring 30 from from the end position shown for example in FIG. 1, so that in all cases the entire stroke of the spring is available for safety release.
• the unidirectional friction blocker can be actuated independently of a manual actuation lever or the like provided only as an option and coupled with the sole jaw.
• a manual actuation lever or the like provided only as an option and coupled with the sole jaw.
• a push button device for example a push button device, an electronic circuit device and / or the like.
• FIGS. 7 to 12 is shown another alternative embodiment of a heel piece 10 comprising a unidirectional friction blocker produced in the form of a unidirectional blocker with rolling body 60 "which also comprises a base body 14 intended to be fixed to the ski, on which a sole jaw 16 is pivotally mounted about an axis A, said sole jaw coming into contact with the sole of a ski boot by means of a sole holding bracket downwards 22 and a support spout 24.
• a return cam 26 pivotally mounted on the base body 14 about the same axis A is pushed back by a spring arrangement 28 in the starting position shown in FIGS. 7, 9, and 10.
• the spring arrangement 28 comprises a spring compression 30, which rests on a first spring support 32 at the end remote from the return cam 26.
• the spring support is produced in the form of a cup-shaped adjustment screw and provided with 'an external thread 34 which cooperates with an internal thread 36 of a cylindrical bore 38 in the base body 14 (see in particular Figure 7).
• the compression spring 30 bears against a second spring support 40, also in the form of a cup, guided like a piston in the cylindrical bore 38.
• the return cam 26 comprises a partially cylindrical part 44, concentric with the axis A of the cam and of the sole jaw, on which two projections 82, 84 are spaced apart from each other, against which s' supports the second spring support guided like a piston when the return cam 26 is not loaded by the sole jaw 16 (see in particular FIGS. 7, 9 and 10), the spring support being supported by its end face 42 which is correspondingly curved .
• the second spring support 40 bears in two locations S1 and S2 against the return cam 26 which occupies its starting position.
• the unidirectional blocker with a rolling body 60 "arranged between the sole jaw 16 and the return cam 26 comprises a roller cage 80 mounted to rotate about the axis A of the cam and the sole jaw, as well as two rollers 62 "locking arranged in diametrical opposition, which are each received in an intermediate space 72 located between the bearing and sliding surface 68 of the return cam 26 and a counter surface 70" of the roller cage 80.
• substantially smooth bearing surface 28 provided on the outside on the return cam 26 has a circular or semi-circular profile concentric with the axis A of the return cam and the sole jaw.
• the counter surfaces 70 are preferably oriented so that an angle of about 10 ° is formed between the normal N of the surface support 68 at the point of contact B with the blocking roller 62 "and the normal N 'of the counter surface 70" at the point of contact C with the blocking roller 62 "(see FIGS. 11 and 7).
• the roller cage 80 produced in the present embodiment separate from the sole jaw 16, is brought into its rotational position relative to the sole jaw 16 by means of two stop faces 98, 100 distant one on the other provided on the sole jaw 16.
• a coupling integral in rotation between the roll cage 80 and the sole jaw 16 it is practically defined a coupling integral in rotation between the roll cage 80 and the sole jaw 16.
• a slight clearance can here be left between the roller cage 80 and the sole jaw 16, as indicated in FIG. 7 by a small intermediate space Z between the abutment face lower 100 and the roller cage 80 when the roller cage 80 is simultaneously in direct contact against the upper stop face 98.
• the locking rollers 62 "forced elastically into the locking position are guided on a circular path K of radius RI, concentric with the axis A of the cam and of the sole jaw , the radius of said circular path being at least substantially greater, by the radius r of the two cylindrical locking rollers 62 ", to the radius R2 of the bearing surface 68 provided on the outside on the partially cylindrical part 44 of the return cam 26.
• the locking rollers 62 are mounted on a release lever 64" which is pivotally mounted on the base body 14 about the axis A of the cam and the sole jaw.
• This release lever 64 is biased by means of a spring element 74 "in a starting rotational position relative to the roller cage 80, position in which the locking rollers 62" occupy their locking position shown in FIGS. 7, 8, and 11.
• the spring element 74 " which for example consists of a polyurethane spring, a compression spring or a metal leaf spring, is arranged between a spring support 116 provided on the release lever 64" and the cage 80 roll.
• the angled release lever 64 is arranged inside the sole jaw 16 which is extended by a lever arm 120, and is accessible from the outside for manual actuation at the upper or rear end 122.
• the lever release 64 can be pivoted backwards against the relatively weak elastic force 74 "and inside the sole jaw 16 relative to the roller cage 80 as far as the locking rollers 62 ' are brought into the release position shown in Figures 9 and 10, position in which the locking rollers 62 "are arranged with a certain play Spl in the intermediate spaces 72 considered.
• the release device comprises a release piston 86 guided in a hole 92 in the sole jaw 16, which urges the release lever 64, and which cooperates with an ascending ramp 102 provided on the base body 14 and with a surface section 104 of the base body 14, this section of surface being located following said ascending ramp in the opening direction and having a partially cylindrical shape concentric with the axis A of the cam and the sole jaw.
• the release piston 86 On the ascending ramp 102 as well as at the far end of the cylindrical surface section 104, the release piston 86 has a stop 88 which is held against a stop surface 80 of the sole jaw 60 when the release lever 64 "is not actuated.
• This stop 88 has on its side remote from the stop surface 90 an inclined surface 94 against which the rear end 122 of the release lever 64" rests, pushed back by a spring, via a slightly curved counter surface 96.
• the release piston 86 and the ascending ramp 102 as well as the partially cylindrical surface section 104 are arranged with respect to each other and designed in such a way that the unidirectional blocker, produced for example in the form of a unidirectional blocker with rolling body 60 ", is then always necessarily released when the sole jaw 16 reaches a rotational position within a range of rotation which is delimited on the one hand at least substantially by a position for releasing the ski boot ( see figure 8) and on the other hand by the open position (see figure 9).
• a rocking mechanism 106 which comprises a cylindrical spring case 108 mounted pivoting about an axis H on a link arm 114 from the roller cage 80, a rod-shaped spring support 110 mounted pivoting about an axis G on the base body 14 at one end and guided in the spring housing 108, and a compression spring 112 arranged between the spring housing 108 and the spring support 110.
• the two pivot axes G, H extend parallel to the axis A of the cam and of the sole jaw and parallel to the locking rollers 62 ".
• the spring compression element 112 is pressed at one end against the bottom of the spring case 108 which is open on one side for receiving the rod-shaped spring support 110.
• this compression spring 112 can for example being in abutment against the pivot axis G (see FIG. 9) or on a piston 118 guided in the cylinder 108 and provided on the spring support 110 (see FIG. 12).
• the spring housing 108 can be provided with lateral slots 124 so that it can be moved against the force of the spring partially up to the top of the pivot axis G.
• the spring support 110 in the form of a rod is in this case at least partially surrounded by the compression spring 112.
• the rocking mechanism 106 takes the tilting position indicated by PI in FIG. 12, in which the roller cage 80 and therefore the sole jaw 16 are stressed by a slight spring force F in the closed position. If the sole jaw 16 is pivoted out of the closed position, the spring 112 is then gradually compressed until it reaches an intermediate position in rotation PO. After reaching this intermediate position in rotation PO, the rocking mechanism 106 acts in the opening direction, until it has reached the rotation position P2 in the opening position of the sole jaw 16, wherein the roller cage 80, and through it the sole jaw 16, is biased by a slight spring force F 'in the opening direction. In this case, the tilt axis H is guided along a circular track KB concentric with the axis A of the cam and of the sole jaw.
• the sole jaw 16 is therefore urged in the opening direction by the rocking mechanism 106, as long as it occupies a rotational position between its opening position and a predetermined intermediate position, and it is urged in the direction of closing by the same rocking mechanism as long as it occupies a rotational position between its closed position and the predetermined intermediate position.
• the variant embodiment of the heel piece of the invention shown in FIGS. 7 to 12 operates as follows:
• the locking rollers 62 are held in their locking position by the resiliently loaded release lever 64", so that the unidirectional blocker with rolling body 62 "provides an integral coupling between the sole jaw 16 and the return cam 26 loaded elastically, as soon as the sole jaw 16 is biased in the opening direction by the ski boot.
• the sole jaw 16 is biased by the ski boot (shown only in Figure 2) in the opening direction and pivots upwards out of the closed position.
• the unidirectional blocker with rolling body 60 "remains blocked, thanks to which the return cam 26 is also pivoted with the sole jaw 16 in the direction of opening around the common axis against the relatively large spring force applied by the compression spring 30 of the spring arrangement 28.
• the roller cage 80 is thereby driven by the sole jaw in the direction of arrow I, while the locking rollers 62 ", mounted with a certain clearance Sp2 in the release lever 64 ", are pushed back in the opposite direction J by the release lever 64" resiliently loaded, so that these rollers assume their locked position. Thanks to this, the return cam 26 resiliently loaded is driven in the direction of the arrow L.
• the heel piece is shown in a position immediately before voluntary manual release. While the sole jaw 16 still occupies its closed position, the release lever 64 "is pivoted manually against the spring force 74", for example by means of a ski pole, as far as the locking rollers 62 "take up their release position inside the intermediate spaces 72, and the unidirectional blocker with rolling body 60" is consequently released.
• the sole jaw 16 can be pivoted in the opening direction, for example by means of its lever arm 120, without the resiliently loaded return cam 26 then being driven The latter remains in its starting position shown in Figure 10.
• the sole jaw 16 is pivoted down in the closing direction, for example by means of the ski boot and / or by means of its lever arm 120.
• the locking rollers 62 "of the unidirectional blocker with rolling body 60" which acts as a free-drive mechanism, are guided freely along the bearing surface 68, circular or semi-circular and concentric with the axis A.
• the rocking mechanism 106 has reached the intermediate pivoting position PO (see FIG. 12)
• the closing movement is further assisted by this rocking mechanism 106, by means of which the sole jaw 16 is then biased towards closing via roller cage 80.
• FIG. 13 comprises a unidirectional blocker with toothed pawl, designated by the reference 160. Furthermore, this embodiment incorporates a certain number of elements already described in relation to the embodiment of FIGS. 7 to 12, and these will not be described in detail again. They bear the same reference figures in the figure.
• the pawl 162 is here pivotally mounted on an intermediate cage 163 which is itself pivotally mounted about the common axis A of the return cam 26 and the sole jaw 16.
• the cage 163 is in abutment against the jaw of sole 16 both directly by a first bearing surface 165 and with the interposition of an elastic member 167 by a second bearing surface 169.
• the purpose of the elastic member 167 is simply to compensate for the manufacturing tolerances of the sole jaw 16 and cage 163, so that the latter is practically integral with the sole jaw 16. We can even consider doing without of such an intermediate cage and of mounting the pivoting pawl 162 directly on the sole jaw 16.
• the pawl 162 ends with a tooth 171 directed radially towards the axis A, and the bearing face 68 of the return cam 26 has a toothed sector 173.
• a spring 175 in support on the intermediate cage 163 urges the pawl 162 so that its tooth 171 comes into engagement with this toothed sector.
• the pawl On the side opposite its axis of rotation, the pawl comprises a release arm 177 inclined with respect to a radial direction from the common axis A of the return cam 26 and the sole jaw 16.
• the manual actuation lever 64 is here mounted for rotation about an axis 179 passing through the extension arm 120 of the sole jaw 16, and ends with a finger 181 directed generally towards the axis A and located at a distance from the latter at most equal to the radial distance between the axis A and the release arm of the pawl 162.
• a spring 183 interposed between the sole jaw 16 and the actuation lever 64 pushes the latter towards a rest position, shown in FIG. 13, where the distance between the finger 181 of the lever 64 and the release arm 177 of the ratchet 162 is maximum.
• a pusher 185 in the form of a semi-cylindrical flap mounted pivoting about the axis A by means not shown, is disposed at a radial distance from the axis A corresponding to that of the finger 181 and the arm 177 of the pawl.
• the finger 181 of the actuation lever engages in a recess 187 of the flap, so that a tilting of the actuation lever 164 results in a pivoting of the pusher 185 in the direction of the release arm 177 of the pawl 162 and, when the edge 189 of the pusher 185 reaches the release arm 177, it forces it to pivot, which has the effect of releasing the tooth 171 of the pawl 162 at the other end from the toothing 173 of the return cam.
• the sole jaw 16 is then free to pivot in the opening direction as in the previous embodiments.
• the body of base 14 has an upper extension 104 of semi-cylindrical shape, which is disposed at a radial distance from the axis A corresponding substantially to that of the release arm 177 of the pawl 162 and slightly less than that of the pusher 185.
• This extension ends by a stop edge 105 located at a predetermined angle of the release arm 177, such as this one comes into engagement against this abutment edge 105 when the pivoting of the jaw 16 exceeds said predetermined angle, and the tooth 181 of the pawl 162 emerges from the toothed sector 173 of the return cam 26 following the pivoting of the pawl 162 which results therefrom.
• the recess 187 of the flap 185 is preferably blind and that the flap constitutes a closure for the space which separates the base body 14, more precisely its abutment edge 105, and the jaw of sole 16, which has the effect of preventing the penetration of mud, snow or ice towards the interior of the device.
• rocking mechanism 106 ' is here mounted in an inverted manner, that is to say that its spring housing 108' is mounted articulated on the base body 14, while its spring support 110 'is mounted articulated on the cage 163, or on the sole jaw 16.
• This has the advantage of preventing the penetration of mud, snow or ice, practically always present in this lower part of the heel, towards the inside of the rocking mechanism. 106 '.
• the pawl 162 is made in two parts 162 and 162 'placed side by side on the same axis 191, as shown in Figure 14, and their teeth 181, 181' are offset in the peripheral direction of the return cam 26 by a distance corresponding to half the pitch of the teeth of the toothed sector 173 of this return cam. It is even possible here to generalize to any number N of pawls, whose teeth will then be successively offset in the peripheral direction of the return cam by a distance corresponding to 1 / N 1st of the pitch of the teeth of the toothed sector.

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• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
• Emergency Lowering Means (AREA)
• Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
• Forklifts And Lifting Vehicles (AREA)

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• 1991
  • 1991-06-19 DE DE4120253A patent/DE4120253A1/de not_active Withdrawn
• 1992
  • 1992-06-17 DE DE69204427T patent/DE69204427T2/de not_active Expired - Fee Related
  • 1992-06-17 EP EP92911819A patent/EP0543966B1/de not_active Expired - Lifetime
  • 1992-06-17 JP JP4510747A patent/JPH06500490A/ja active Pending
  • 1992-06-17 AT AT92911819T patent/ATE127031T1/de not_active IP Right Cessation
  • 1992-06-17 WO PCT/EP1992/001380 patent/WO1992022362A1/fr active IP Right Grant
  • 1992-06-17 US US07/969,166 patent/US5326127A/en not_active Expired - Fee Related

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