EP0651954B1 - Fastening device for sport shoe - Google Patents

Description

The invention relates to a tensioning device for a sports shoe, in particular one Ski boot which has a base part which can be fastened to the sports shoe and in which a non-rotatable part with an axially movable rotating body connected pulley for a rope is arranged, wherein the rotating body having a handle in the axial direction by means of an axial spring is loaded and can assume a starting position due to the axial mobility, in which a toothing on, rotating body cooperates with a blockage on the base part to a To prevent rotation against the pulling direction of the rope and when pressing on the handle can assume a freewheel position against the force of the axial spring, in which the blocking is released from the teeth and the rotating body is freely rotatable in both directions.

In US-A-5,001,817 and US-A-4,799,297 (Nordica) are chucks for Ski boots are disclosed which have a housing with a drum for at least holding a rope, a rotary knob for tensioning the rope and one lying in the axial direction Have front teeth with a detachable lock, this lock by a special metal wing or a spring-loaded counter toothing is formed and by Pressing the push button can be disengaged from the axial spur gear.

Likewise, EP-B-27 222 (Nordica) discloses a device for actuating the Instep pressure element of a ski boot with a rope, which is in the instep area over the shoe extends and a winding roller, which is rotatably connected to a button which is rotatable and is axially movable on a body, both the body and the button a Has front teeth and these teeth by pulling the button against spring force can be separated from each other.

Furthermore, from documents DE-A-3 635 168, EP-A-56 953, WO-A-79/00770, EP-A-155 596 and EP-A-297 342 driving and Freewheel devices with face gears, perforated disks, individually engaging teeth or wings or known with a plurality of gears.

From WO-A-93/14663 a tensioning device for a shoe emerges, the essence of which is therein is that two cables, namely one for tensioning in the instep area and one for tensioning in the Ankle area can be operated independently or if desired - together. For this purpose, two axially displaceable sheaves are provided, which two sprockets, the teeth of which each have a steep and a flat flank, in one Direction of rotation are coupled together. The pulleys are through with their gears Axially loaded spring force, the lower pulley also projecting radially Has external toothing, inwards from the wall of the housing of the clamping device engage the spring-loaded locking tines in the external toothing. Both will Rope pulleys, of which the upper one is rigidly connected with a twist grip, against the mentioned spring force printed down, the locking tines come out of engagement with the External teeth of the lower pulley. With the help of this construction you can first by turning the rotary handle clockwise, both pulleys and both cables are twisted be excited. If the instep area is stretched enough, the twist grip is against the Turned clockwise. As a result, the upper pulley is also turned back, not however, the lower one, which is blocked by its external teeth and the locking tines. At The lower rope pulley is again turned again clockwise rotated so that the ankle area is further tightened in this way. To the When both cables are relaxed, both pulleys are pressed down simultaneously, whereby also the locking between the external teeth of the lower pulley and the locking tines will be annulled.

According to the prior art, such clamping devices can be tensioned after the rope was relaxed in steps, a controlled gradual relaxation of these However, devices in small steps are not possible. Furthermore, such devices built much more compact for practical purposes and attached to the footwear be adjusted.

Therefore, it is an object of the invention through a particularly compact mechanical solution to allow a controlled release of a cable in small steps.

This object is achieved in that an intermediate ring supported on the base part with the Rotating body over a locking piece and a further toothing, which consists of n segments with in each case in the axial direction of helically formed sliding flanks and radially formed Locking flanks exist, is coupled so that by axially moving the rotating body against the axial spring force in a middle position between the starting position and the Open position the spring-loaded locking piece, which rests on a locking flank, initially against the axial spring force along this locking flank and in the presence of a cable in the consequence while moving in the direction of the axial spring force along the Sliding edge moves to the next blocking edge, which causes the rotating body to move one rotated certain angle and axially returned to the starting position.

Figur 1 eine schematische Explosionsdarstellung der erfindungsgemäßen Vorrichtung,

Figur 2a einen Schnitt durch die Längsmittelachse der Vorrichtung in Explosionsdarstellung und Figur 2b diesen Schnitt durch die zusammengebaute Vorrichtung,

Figuren 3a, 3b einen horizontalen Schnitt durch die Vorrichtung, an dem die Wirkungsweise der Klinkenverzahnung ersichtlich ist,

Figur 4 einen horizontalen Schnitt durch die Vorrichtung, an dem die Wirkungsweise der Zwischenringverzahnung ersichtlich wird und

Figur 5 einen Ausschnitt der erfindungsgemäßen Verzahnung an dem Zwischenring.

The invention with the advantages resulting therefrom is explained in more detail below on the basis of an exemplary embodiment which is illustrated in the drawings (FIGS. 1 to 5). In these show:

FIG. 1 shows a schematic exploded view of the device according to the invention,

2a shows a section through the longitudinal central axis of the device in an exploded view, and FIG. 2b shows this section through the assembled device,

FIGS. 3a, 3b show a horizontal section through the device, on which the mode of action of the pawl toothing can be seen,

Figure 4 shows a horizontal section through the device, on which the mode of action of the intermediate ring toothing can be seen and

Figure 5 shows a section of the toothing according to the invention on the intermediate ring.

According to Figures 1 and 2, the base part 1 of the device, which is also the housing represents, in two parts with a base part 2, which is generally adapted to the shape of the shoe and can be attached to the athletic shoe, and an upper 30, which the appropriate cover of the clamping device forms. In the central area of base part 2 there is a cylindrical recess 3 for receiving a rope pulley 6, which by means of a cylindrical projection 8 rotatably mounted in a central bore 4 of the base part 2 is. On the two side flanks of the base part 2 are in the area of Mid-level grooves 5, 5 'for the rope 45, which in different axial heights cylindrical recess 3 open and in which the rope 45 when operating the device slides.

The pulley 6, the outer diameter of which essentially corresponds to the diameter of the depression 3 has on the cylindrical outer surface two rope grooves 7,7 ', in which two ropes 45 are fixed at certain points on the circumference in a known manner. At that cylindrical projection 8 opposite side has the pulley 6 in the axial direction a central pin 9 for the rotationally fixed connection with a rotating body 17, the one Has recess 23, which is a counter-structure to the pin 9 and the non-rotatable, however, axially movable coupling with the pulley 6 is used, this pin 9 a Central recess 11 for receiving an axial spring 16. As in Figs. 1 and 4 can be seen is the rotationally fixed and axially displaceable coupling in the illustrated Embodiment by the hexagonal pin 9 and the precisely fitting recess 23rd realized between which the axial spring 16 can act. Furthermore, the pulley 6 has one annular recess 10, the outer diameter of which is at least the diameter of the Rotating body 17 corresponds, since this, as can be seen in FIG. 2b, moves against the axial spring 16 penetrates into this recess 10.

According to the invention, there is a between the pulley 6 and the rotating body 17 Intermediate ring 12, which in the present embodiment on the cylindrical Inner surface has a special toothing 14 with n uniform segments, each consist of sliding edges 114 ', 214', ..., n14 'and blocking edges 114' ', 214' ', ..., n14' ', 5, the sliding flanks 114 ', 214', ..., n14 'tangential, helical walls and the locking flanks 114 '', 214 '', ..., n14 '' in the axial Radial triangular faces are in the direction. Below this Internal toothing 14 has the intermediate ring 12 on the inside of a flat cylindrical Inner surface 12 ', the diameter of which is greater than or equal to the diameter of the Rotary body 17 is. There is also a on the outer circumference of the intermediate ring Tangentially lying recess 13 for mounting a tangential spring 15 through which the Intermediate ring 12 resiliently on a correspondingly arranged nose 35 of the base part 1 is supported.

According to the invention, one acts on the internal toothing 14 of the intermediate ring 12 lateral recess 20 of the rotary body 17 spring-loaded locking piece 19. This in substantially elongated locking piece 19 has at one end a seat 19 'for this Locking piece acting spring force 18 and is at the opposite end 19 " Adaptation to the internal toothing 14 beveled. This leading edge is in the axial direction 19 '' of the locking piece 19 substantially parallel to the front edge of a locking edge Internal teeth 14 (see Fig. 4). In another embodiment, the locking piece 19 also be designed as a rotatably mounted pawl piece or as a self-resilient locking lug.

In a further embodiment, which is not shown here, the one shown in FIG Embodiment arranged on the inner surface teeth 14 optionally on the outside Intermediate ring 12, on / in the rotating body 17, or also be arranged on the base part 1, whereby the locking piece 19 is consequently mounted on the intermediate ring 12 or on the base part 1 in order to To be able to act internal teeth 14 according to the invention.

The axially movable rotary body 17 also has a on the cylindrical outer surface Pawl teeth 21, which cooperates with a blockage 24, 27 so that a Rotation of the rotating body 17 and thus the rope pulley 6 in the pulling direction of the rope 45 is prevented. On the side facing away from the pulley 6, the rotating body has a handle a pressure pin 22 which is connected to a rotary knob 38 which is rotatably mounted on the base part rotatably connected, but is axially displaceable with respect to the rotary knob 22.

The blocking of the pawl teeth 21 consists of one or more spring-loaded locking lugs 27 arranged along a circle, which by means of axes 28 in Bores 33 of the base part 1 are rotatably mounted and have an open spring ring 24 in Are loaded in the direction of the pawl teeth 21, the spring ring 24 through an opening 25 is secured against rotation on a locking lug 34 of the base part 1. They can also Locking lugs 27 can also be loaded with springs of a different type, or are designed to be self-resilient be.

The second part of the housing is formed by the upper part 30, which is like the base part 2 has flanks on both sides, which cover the cable grooves 5, 5 '. Owns in the center the upper part 30 has an opening 37 through which the free end of the pressure pin 22 of the Rotating body 17 is guided out of the housing. Are on the underside of the upper part 30 The following recesses are provided in the housing: a cylindrical recess 31 for Recording the intermediate ring 12, which contains a nose 35 at one point on the circumference the tangential spring 15 is mounted; a groove-shaped recess 32, the one is annular recess in the cylindrical recess 31 and for receiving the Spring ring 24 is used, wherein the groove 32 has at least such a width that the Diameter of the spring ring, as can be seen in Fig. 3a, 3b, corresponding to the Radial movement of the locking lugs 27 is changeable. The groove 32 is in the effective range Locking lugs broken in the radial direction inwards, so that the locking lugs 27 on the Pawl teeth 21 can attack, and has at one point between two locking lugs 27, a locking lug 34 through which the spring ring 24 is secured against rotation. In the Breakthroughs of the pill 32, in which the locking lugs 27 act, are in the upper part 30 of the Base part 1 along a circle bores 33 are provided, in which the axes 28 of the Locking lugs are rotatably mounted.

On the upper side, the upper part 30 has an annular projection 36, on which an Rotary knob 38 is rotatably mounted, which corresponds to the outer shape of the pressure pin 22 has a precisely fitting axial recess 39, whereby this pressure pin 22 with the Knob 38 is rotatably connected, but is axially displaceably mounted. With this one Embodiment shown are the outer shape of the pressure pin and the exact fit Recess 39 is hexagonal. The rotary knob 38 also points in the area of this Recess 39 a funnel-shaped recess 41, which is easier axial actuation of the Pressure pin 22 allows, and on the outer circumference webs or grooves that a Ensure that the rotary knob turns non-slip.

In a further embodiment, the pressure pin 22 can be operated with the rotary knob 38 be formed in one piece, the base part 1 along the central plane in the axial direction is divided and therefore no longer from the base or upper part but from two roughly mirrored side panels.

The mode of operation of a tensioning device according to the invention is described below of the accompanying figures, with particular reference to the mode of operation of the Internal teeth 14 on the intermediate ring 12 in connection with the locking piece 19 of the Rotating body 17, as well as the different axial positions of the rotating body closer is received.

When the rope 45 is tensioned, the rotating body 17 is initially shown in FIG. 2b in the starting position (A), in which the locking lugs 27 according to FIG. 3a in the Teeth 21 of the rotating body 17 are engaged. By turning the rotary knob 38 in The rotating body 17, which is connected to it in a rotationally fixed manner, rotates clockwise and also rotates with it non-rotatably connected rope pulley 6, whereby optionally one or two in grooves 5, 5 ' sliding ropes 45 are wound in corresponding grooves 7, 7 'of the pulley 6. The Locking lugs 27 are, while the rotating body 17 by one tooth each Internal gear 14 rotated further, rotated about the axis 28 and as shown in Fig. 3b the respective tooth of the pawl teeth 21 deflected radially outwards, whereby the Spring ring 24 is also pushed radially outwards. As soon as the rotating body turns one Tooth of the pawl teeth 21 has rotated, the locking lugs 27 snap due to Load by the spring ring 24, as can be seen in Fig. 3a, back into the Pawl toothing 21, whereby the spring ring 24 also returns to its original Size maintains. Such movements of the spring ring 24 and the locking lugs 27 are successively brought about by turning the rotary knob 38 until the rope 45 on the desired tension prevails.

If the device, according to the invention, is now to be relaxed gradually and in a metered manner are, so press on the pressure pin 22, whereby the rotating body 17 against the Axial spring 16 is moved into its central position B. In this middle position B are the Locking lugs 27 separated from the pawl teeth 21 and the locking piece 19 is against one Locking flank 114 '' of the internal toothing 14 of the intermediate ring 12, whereby initially a Rotation of the rotating body 17 counterclockwise and thus relieving the Cable is prevented. If the rotating body is in this middle position B by pressing the pressure pin 22 moves further against the axial spring 16, the locking piece 19 slides, as indicated in FIG. 4 by the arrow X, first along this blocking edge 114 ″ and in the sequence according to the arrow Y along the sliding flank 114 'until the Blocking piece rests on the next blocking edge 214 ″. By the invention Construction of the internal toothing 14 becomes the locking piece 19 and thus also the rotating body 17 moves in the direction of the force of the axial spring 16, whereby the rotating body 17 again reaches the starting position A, but is rotated by a certain angle. Of the Angle of rotation about which the rotating body 17 and thus also the rope pulley 6 at one once actuated this mechanism is essentially 360 / n degrees, where n is the number of segments, that is, the number of locking or sliding edges Internal toothing 14 is. Such movements of the locking pin on the internal toothing 14 of the The intermediate ring is successively brought about by pressing on the pressure pin 22 until until the desired relief has occurred.

If the rotating body 17 is pressed against the axial spring 16 by pressing on the pressure pin 22 moves that that initially applied to a locking edge 114 '' of the toothing 14 Locking piece 19 no longer on the internal toothing 14, but only on the flat inner surface 12 'of the intermediate ring, the rotating body is in the freewheeling position C, in which the rotating body 17 and thus also the rope pulley 6 can be freely rotated in both directions and the rope is completely relaxed. By releasing the pressure pin 22 the Rotary body 17 brought back to its original position A, which with the original Condition before tensioning the rope 45 is mechanically equivalent.

In the embodiment shown in FIGS. 1 to 5, the intermediate ring 12 is by means of the tangential spring 15 so supported on the base part that this intermediate ring 12 by one certain angle is rotatable, the size of the angle of rotation of the tangential spring 15, or the cable is controlled so that these two sizes are in equilibrium stand. As a result, the clamping device when the rotary body 17 is in the central position B is brought, even before the relaxation mechanism 14 according to the invention comes into force, 19 somewhat relieved. A further relief of the cable pull will be as above described by successively moving the rotating body 17 from the starting position A in the middle position B is reached by pressing on the pressure pin 22. The tangential spring 15, which is in the middle position B of the rotating body 17 in equilibrium with the cable and is constantly loaded, either with complete relief of the device, by Moving the rotating body 17 in the freewheeling position C, or when re-tensioning the Device, by turning the knob 38 clockwise, relieved. Especially with high voltages of the rope 45 is gradually by this tangential spring 15 Relaxation of the device is particularly gentle on the material and easy to carry out.

In conclusion, it should be noted that the direction of rotation of the clamping device by a simple mechanical reversal of the gears can be changed and in addition to ropes all open and closed developable traction means such. B. cords, chains, metal, leather or Plastic straps can be used.

Claims (19)

1. Clamping device for a sports shoe, in particular a ski boot, which device comprises a base part (1) which can be attached to the sports shoe, in which base part a cable roller (6) for a cable (45) is disposed connected in a non-rotatable manner to all axially displaceable rotational body (17), wherein the rotational body comprising a handle (22, 38) is axially loaded by means of an axial spring (16) and can assume an initial position (A) by means of this axial displaceability, in which initial position toothing (21) on the rotational body (17) cooperates with a blocking device (24, 27) on the base part (1) in order to prevent rotation against the traction direction of the cable (45), and call assume a free running position (C) when pressure is exerted on the handle (22, 38) against the force of the axial spring (16), in which free-running position the blocking device (24, 27) is released from the toothing (21) and the rotational body (17) can rotate freely in both directions, characterised in that, by means of a locking piece (19) and further toothing (14), which consists of n segments with respective slide edges (114', 214', ..., n14') formed helically in the axial direction and of radial locking edges (114'', 214'', ..., n14''), an intermediate ring (12) supported on the base part (1) is coupled to the rotational body (17) in such a way that by means of axial movement of the rotational body (17) against the axial resilient force (16) into a middle position (B) between the initial position (A) and the free-running position (C) the spring-loaded locking piece (19), which lies against a locking edge (114''), first moves against the axial resilient force (16) along this locking edge and, when traction is exerted on the cable, consequently, during simultaneous movement in the direction of the axial resilient force (16), moves along the slide edge (114') as far as the next locking edge (214''), whereby the rotational body rotates by a specific angle and axially returns to the initial position (A).
2. Device according to claim 1, characterised in that the base part (1) is formed as a two-part housing with a bottom part (2), attached to the sports shoe, and an upper part (30).
3. Device according to claim 1 or 2, characterised in that the base part (1) is curved to adapt to the shape of the sports shoe.
4. Device according to claim 2 or 3, characterised in that the bottom part (2) of the base part (1) comprises a cylindrical recess (3) for receiving the cable roller (6), and a bore (4) for rotatable mounting of a cylindrical projection (8) of the cable roller (6).
5. Device according to one of claims 2 to 4, characterised in that the bottom part (2) of the base part (1) comprises a channel (5) for the cable (45), which channel issues into the cylindrical recess (3) of the bottom part (2).
6. Device according to one of claims 2 to 4, characterised in that the bottom part (2) of the base part (1) comprises cable channels (5, 5') on both sides of the cylindrical recess (3), which channels issue into the recess (3) at different axial heights.
7. Device according to claim 6, characterised in that the cable roller (6) comprises two channels (7, 7') to wind and unwind two cables (45) of such an axial length that the cables (45) slide in corresponding channels (5, 5').
8. Device according to one of claims 1 to 7, characterised in that the cable roller (6) comprises a central spigot (9) for positive connection to a recess (23) of the rotational body (17) and this spigot (9) comprises an axial recess (11) to receive the axial spring (16), which acts between the rotational body (17) and the cable roller (6).
9. Device according to one of claims 1 to 8, characterised in that, on the side facing the rotational body (17), the cable roller (6) comprises an annular recess (10) of which the outer diameter is larger than or equal to the diameter of the rotational body (17).
10. Device according to one of claims 1 to 9, characterised in that the toothing (14) is disposed on the inner surface of the intermediate ring (12) and the locking piece (19) is disposed laterally on the rotational body (17).
11. Device according to claim 10, characterised in that the rotational body (17) comprises a lateral recess (20) for receiving a spring (18) loading the locking piece (19) and for partially receiving the locking piece (19).
12. Device according to one of claims 1 to 11, characterised in that the locking piece (19) comprises a cylindrical spigot (19') as a seat for the spring (18) loading the locking piece.
13. Device according to one of claims 1 to 12, characterised in that, on the side remote from the spring seat (19'), the locking piece (19), in a chamfered manner, comprises a chamfered end (19'') adapted to the toothing (14).
14. Device according to one of claims 1 to 13, characterised in that the intermediate ring (12) can rotate by a specific angle with respect to the base part (1) against a tangential resilient force (15).
15. Device according to claim 14, characterised in that the intermediate ring (12) comprises a tangential recess (13), which is allocated to a projection (35) of the base part (1) in order to store the tangential resilient force (15).
16. Device according to one of claims 1 to 15, characterised in that the rotational body (17) comprises ratchet toothing (21) disposed along the periphery, which toothing is secured, when the rotational body (17) is in the initial position (A), with one or several locking projections (27), disposed in a circle, against rotation of the rotational body (17) in the traction direction of the cable (45), wherein the locking projections (27) are mounted by means of axes (28) in bores (33) of the base pail (1) and are loaded in the direction of the ratchet toothing (21) by an open split washer (24) which is secured against rotation by a latch projection (34) of the base part (1).
17. Device according to one of claims 1 to 16, characterised in that the axially moveable rotational body (17) comprises a pressure spigot (22) as a handle, which pressure spigot, at its free end and by means of an aperture (39) in a rotational button (38), is mounted thereto in a non-rotatable and axially displaceable manner.
18. Device according to claim 17, characterised in that in the region of the aperture (39) the rotational button (38) comprises a funnel-shaped indentation (41) on the upper side for easy actuation of the pressure spigot (22).
19. Device according to one of claims 17 or 18, characterised in that the rotational button (38) comprises an annular recess (42) on the underside, by means of which recess the rotational button (38) is rotatably mounted on an annular projection (36) of the upper part (30) of the base (1).

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