EP3138432A1 - Tensioning closure device for shoes, especially ski or snowboard boots - Google Patents

Abstract

A tension closure device (1) for shoes, in particular for ski or snowboard boots, comprising at least one tensioning lever (2) and a multipart traction device (3), wherein the traction device (3) at least one hook pivot part (7) and a with the hook swivel part (7) cooperating hook sliding part (8). The hook pivoting part (7) is articulated on the tensioning lever (2) and the hook sliding part (8) is connected to an eccentric adjusting device (5) at a first end (8 ') for fine adjustment of the clamping force, wherein the eccentric adjusting device (5) comprises at least one rotatably mounted eccentric module (9) and wherein the eccentric module (9) is in operative connection with the hook slide part (8) such that a rotational movement of the eccentric module (9) about a rotation axis (DA) into a linear movement of the hook slide part (8) along a longitudinal axis (LA) the clamping device (1) is implemented. The hook slide part (8) is equipped in the region of its first end (8 ') with a contact section (10) having a convexly curved abutment surface (11) and the eccentric module (9) has at least one convexly curved eccentric about a center axis (MA) Guide surface (12) for conditioning of the contact section (10).

Description

Technical area

The invention relates to a clamping device for shoes, especially ski or snowboard boots according to the preamble of claim 1.

State of the art

Clamping devices for ski or snowboard boots are well known from the prior art, via which the flaps of a ski or snowboard boot can be connected to each other and clamped to each other. Such tension lock devices are usually also referred to as buckles of a ski or snowboard boot. Also such Spannverschlussvorrichtungen in Rollerblades, mountain boots, work shoes and / or skates application.

Boot fastening devices usually comprise at least one tensioning lever and an elongate pulling device, which are preferably connected to one another in an articulated manner, wherein the tensioning lever is articulated on a carrier part which is intended for connection to the shoe. About the tensioning lever, the preferably adjustable length pulling device can be brought to tension. In order to allow a comfortable adaptation of the clamping force generated by the clamping device, such clamping devices have in addition to a coarse adjustment and a fine adjustment of the length of the elongated pulling device. For this purpose, fine adjustment devices are already known, in which the fine adjustment via threaded or gear-like arrangements and / or a grid adjustment takes place. Also fine adjustment devices are known from the prior art, which allow the fine adjustment by means of an eccentric or by means of a Exzenterverstelleinrichtung.

For example, this describes WO 92/03071 A1 a buckle for shoes with a first and a second tension member and a tensioning lever, wherein the second tension member or the tensioning lever are connected via an eccentric to the shoe. A bearing axis of the eccentric is displaceable in the longitudinal and transverse direction of the tension members, so that a fine adjustment of the length of the tension buckle is made possible by rotation of the eccentric. The eccentric is designed as a tooth plate and is clamped by a tendon against the shoe. The teeth of the tooth plate lie on the shoe and the eccentric is determined by pressing against the surface of the shoe, wherein the teeth of the tooth plate interact with the surface of the shoe. A disadvantage here, the occurring stress and wear of the surface material of the shoes are considered.

The EP 1 300 092 B1 further discloses a shoe with a closing device consisting of two parts hooked together, at least one of the two parts having an annular portion and being mounted on the shoe by means of a disc engaging in the ring of the annular portion. The disc is rotatably and eccentrically mounted on a rivet connecting the disc with the shoe and is received in the circular ring of the annular portion of the one part of the closure device, the disc being completely surrounded by the annular portion and a surface of the disc on a surface the annular portion abuts. The occurring frictional forces between the abutting surfaces counteract an unintentional rotation of the disc. The disc has a non-circular hole for insertion of a corresponding tool, over which the disc can be rotated. By rotating the eccentrically mounted disc, the one part of the closing device is displaced laterally in a portion surrounding the disc, whereby the clamping force of the closing device can be amplified in a finely adjustable manner.

A disadvantage of the above-described locking device of the EP 1 300 092 B1 the fine adjustment can only be carried out with the aid of an appropriate tool.

Another Spannverschlussvorrichtung for shoes having a Exzenterverstelleinrichtung for fine adjustment of the clamping force is from the WO2014 / 082891 A1 known. The locking device of the WO2014 / 082891 A1 has a tensioning lever and a pulling device, wherein the pulling device can be designed in several parts and preferably has a hook pivoting part and a hook sliding part cooperating with the hook pivoting part. The Hakenschieberteil is operatively connected to the Exzenterverstelleinrichtung, wherein the Exzenterverstelleinrichtung has an eccentric module, which has a slotted guide with a guideway for engagement of a guide web of the hook slide part on the underside. A rotation of the eccentric module is thereby converted into a longitudinal movement of the pulling device, whereby the clamping force of the clamping device can be fine-regulated.

Despite the known from the prior art lockers there is a need for easy-to-handle, secure buckles or Spannverschlussvorrichtungen for shoes that are particularly favorable to manufacture and are subject to minor signs of wear.

Presentation of the invention

Object of the present invention is therefore to provide a clamping device for shoes, especially ski and / or snowboard shoes available, which is simple and inexpensive to produce and by means of simple handling allows a precise, preferably stepless adjustment of the length of the clamping device. This object is achieved by the device according to independent claim 1. Further advantageous aspects, details and embodiments of the invention will become apparent from the dependent claims, the description and the drawings.

The present invention provides a tension closure device for shoes, in particular for ski or snowboard shoes, which comprises at least one tensioning lever hinged to the shoe and a pulling device, wherein the pulling device at least one hook pivoting part and one with the hook pivoting part having cooperating hook sliding part. The hook pivoting part is articulated on the clamping lever and the hook sliding part is connected at a first end to an eccentric adjusting device for fine adjustment of the clamping force. The eccentric adjusting device has at least one rotatably mounted eccentric module, which is in operative connection with the hook sliding part such that a rotational movement of the eccentric module about a rotation axis is converted into a linear movement of the hook slide part along a longitudinal axis of the clamping closure device. The present clamping device is characterized in particular by the fact that the hook slide part is provided with a convexly curved contact surface in the region of its first end and that the eccentric module has at least one eccentrically extending about a central axis, convex curved guide surface for conditioning of the contact section. The convexly curved contact surface of the abutment portion of the hook slide part and the convex curved guide surface of the eccentric module lie against each other. Particularly advantageously, according to the invention by the abutting convexly curved bearing and guide surface due to the tensile stress of the clamping connection a self-locking of the Exzenterverstelleinrichtung achieved, whereby further advantageously an additional clamping and / or locking element for the Exzenterverstelleinrichtung can be omitted.

Since the present clamping device for optimal adaptation to the curvature of the shoes based on their length or longitudinal extent also formed arched, is understood herein longitudinal axis and the length or longitudinal extent of the clamping device, so that in accordance with the present understanding, a curved shape of the arched clamping device receiving line falls under the term "longitudinal axis".

The hook slide part of the pulling device of the present clamping device is connected to the eccentric adjusting device and fixed by means of this on the shoe, in such a way that the hook slide part is displaceable over a predetermined distance along the longitudinal axis of the clamping device. The preferably disk-like eccentric module is arranged on an upper side of the hook slide part and that in the region of the first end and is preferably flat on this. An attachment for the Exzentermoduls provided fastener, such as a dowel screw is guided through the center axis of the eccentric module and engages at the same time in a designated slot of the hook slide part. By fixing the fastener in the shoe or in a connected to the shoe support member both the eccentric module and the Hakenschieberteil be attached to the shoe, wherein the Hakenschieberteil is slidably mounted due to the elongated hole.

The abutment portion of the hook slide part projects beyond the surface of the hook slide part and can therefore also be understood as a protruding, projecting or cantilevered section, wherein the convexly curved contact surface of the contact section is oriented essentially perpendicular to the surface of the hook slide part. The convexly curved guide surface of the eccentric module designed to abut the convexly curved abutment surface of the abutment portion is at least partially circular in shape and likewise oriented substantially perpendicular to the surface of the hook slider part. Due to their convex shape, the mutually abutting bearing and guide surfaces are in contact only in a limited contact portion or in a limited contact area.

Upon application of a rotational force on the eccentric module, the convexly curved guide surface of the eccentric module is moved against the convexly curved abutment surface of the abutment portion due to the mutually abutting investment and guide surfaces overcoming the static friction caused by the rotation of the eccentric module about the center axis. This relative movement can also be understood as mutual unwinding, namely as unrolling of the guide surface on the abutment surface or as unrolling of the abutment surface on the guide surface. The applied torque must be sufficiently large in each case to overcome the static friction. Due to the eccentrically extending about the center axis guide surface of the eccentric module is forced by the rotational movement of the eccentric module a linear movement of the hook slide part in a direction along the longitudinal axis of the clamping device extending direction. When the torque decreases, the guide and contact surfaces block themselves by the static friction, regardless of their rotational position to each other, so that with the present Clamping device particularly advantageous a particular stepless fine adjustment of the clamping force of the clamping device is made possible.

It is particularly advantageous without any intentional, external action of a rotational force on the eccentric module no relative movement between the abutting investment and guide surfaces. Under the effect of the clamping force of the clamping device, which can also be understood as a tensile force on the hook slide part, it comes through the system of contact surface on the guide surface due to the existing frictional force to a self-locking, so that the Exzentermodul and the Hakenschieberteil in a mutually fixed, immobile State to each other. The convexly curved abutment surface of the abutment portion of the hook slide part and the convexly curved guide surface of the eccentric module are thus frictionally against each other.

According to a preferred embodiment of the present clamping device, the abutment portion of the hook slide member is formed as a projecting edge portion at the first end of the hook slide member, wherein the convexly curved abutment surface of the abutment portion of the hook slide member facing a second end opposite the first end of the hook slide member. The projecting edge portion can also be understood as an upstand of the first end of the hook sliding part or as a stop edge at the first end.

The eccentric module preferably has on a lower side an eccentrically arranged to the center axis, substantially cylindrical bulge with a peripheral surface, wherein the convex curved guide surface is formed by the peripheral surface of the cylindrical bulge. Via the cylindrical bulge, a convex curved guide surface can be provided in a full circle shape, via which the contact surface of the hook slide part can be guided so that a sufficient linear movement in the direction of the longitudinal axis of the clamping device is effected. This preferred embodiment allows a particularly simple and inexpensive production of the eccentric module.

Due to the tensioning of the hook pivoting part and the hook sliding part, the tension locking device is subject to a predetermined tension force, which can also be understood as a pulling force acting on the hook sliding part, running along the longitudinal axis of the tension locking device and directed in the direction of the hook pivoting part. This tensile force is transmitted essentially to the convexly curved bearing surface of the abutment portion of the hook slide part. At the same time acting at an angle to the direction of the tensile force, namely substantially perpendicular to the direction of the tensile shear force acting on the abutting against the guide surface of the eccentric module abutment portion, which can also be referred to as a lateral force. The resulting tensile force can be determined according to a force triangle of tensile force and shear force.

ausgedrückt werden, wobei

• Fz die Zugkraft entlang der Längsachse,
• µ_H der Haftreibungskoeffizient und
• F_Q die senkrecht zur Zugkraft orientierte Querkraft ist.

Stiction or static friction force between eccentric module and contact section of the hook slide part is determined by the tensile force along the longitudinal axis and the static friction coefficient. The static friction force corresponds to the product of the value of the tensile force and the value of the static friction coefficient. As long as the adhesive frictional force between the eccentric module and contact section of the hook sliding part is greater than the acting transverse force, the eccentric module and the hook sliding part will not move relative to each other or not against each other but will hold each other in a so-called self-locking, creating a secure locking the clamping device is guaranteed. The prerequisite for the possible self-locking, that the static friction force is greater than the acting lateral force, by the term $${\mu }_{\mathrm{H}}*{\mathrm{F}}_{\mathrm{Z}}>{\mathrm{F}}_{\mathrm{Q}}$$

be expressed, where

• Fz the tensile force along the longitudinal axis,
• μ _{H is} the static friction coefficient and
• F _{Q is} the transverse force oriented perpendicular to the tensile force.

Particular advantages now arise over the fact that the convexly curved abutment surface of the abutment portion and the convex curved guide surface of the eccentric module are made of predetermined materials with, for example, a coefficient of static friction of at least 0.2, wherein the stiction or static friction between the contact surface and the guide surface at least as large is that an automatic rotational movement of the eccentric module is inhibited around the axis of rotation by the static friction. To produce the hook slide part and the eccentric module, it is therefore preferred to use plastics which have a static friction coefficient of at least 0.2 in interaction with the material pairings. The coefficient of static friction of at least 0.2 results in particular from the resulting to lateral force.

According to a preferred development, the convexly curved abutment surface of the abutment portion of the hook slider part has a first radius of curvature and the convexly curved guide surface of the eccentric module has a second radius of curvature, wherein the first and the second radius of curvature are approximately equal. By the alignment of the radii of curvature, a particularly efficient self-locking and in particular stepless fine adjustment can be achieved.

To further improve the self-locking can be equipped with an outer layer of a soft component according to a preferred embodiment, the convex curved guide surface of the eccentric module. In such an embodiment, the self-locking is not exclusively due to the static friction force. Rather, in this preferred form, the abutment surface of the hook slide member can engage to some extent in the outer layer of the soft component, or the contact portion can press into the outer layer of the soft component to a certain extent, so that in addition to the static friction a kind of stage or negative slope arises in the convex curved guide surface of the eccentric module. This step or negative slope must be overcome starting from a detected state at the beginning of a relative movement of the eccentric module against the abutment portion, ie at the beginning of a counter-rotating unwinding or slipping of the bearing and guide surfaces first. The application of such an outer layer of a Soft component can be done for example via a multi-component injection molding, namely by means of a so-called 2K process.

Further advantages result from the fact that the hook slide part additionally has a guide web section, wherein the guide web section is arranged at a predetermined distance to the contact section. For example, the distance between the guide web section and the convexly curved contact surface of the contact section is approximately equal to or greater than twice the radius of curvature of the convexly curved guide surface of the eccentric module. In embodiments in which the eccentric module has a cylindrical bulge whose peripheral surface forms the convexly curved guide surface, the distance between the guide web section and the convexly curved contact surface of the contact section is substantially as large or larger than the diameter of the cylindrical bulge.

Preferably, the hook sliding part is formed substantially plate-like and has for safe connection with the hook pivoting part on its upper side perpendicular to the longitudinal axis extending, upwardly projecting web portions, which form hook-like connection means. The hook pivoting part may also be substantially plate-like and have on its underside perpendicular to the longitudinal axis extending web portions which form hook-like connection means or it may alternatively be substantially bow-shaped and at least one hook-in strap section as a connecting means.

The eccentric adjusting device preferably has a rotary handle element and a shaft element, wherein the rotary handle element is particularly preferably designed as a rotary knob and is fixed to an upper side of the eccentric module. Preferably, the shaft member has a substantially rectangular or oval peripheral shape and is plate-like.

Brief description of the drawings

Fig. 1

schematisch dargestellt eine Ausführungsform der erfindungsgemäßen Spannverschlussvorrichtung in perspektivischer Ansicht,

Fig. 2a

in einer oberseitigen Ansicht eine schematische Explosionsdarstellung einer Ausführungsform des Hakenschieberteils mit Exzenterverstelleinrichtung,

Fig. 2b

in einer unterseitigen Ansicht eine schematische Explosionsdarstellung der Ausführungsform des Hakenschieberteils mit Exzenterverstelleinrichtung der Figur 2a,

Fig. 3

in einer seitlichen Ansicht die Ausführungsform des Hakenschieberteils mit Exzenterverstelleinrichtung der Figuren 2a und 2b im verbundenen Zustand und

Fig. 4

in Draufsicht eine Schnittdarstellung einer Ausführungsform des Hakenschieberteils mit verbundener Exzenterverstelleinrichtung.

The invention will be explained in more detail with reference to embodiments in conjunction with the drawings. Show it

Fig. 1

schematically shows an embodiment of the inventive clamping device in perspective view,

Fig. 2a

in a top view a schematic exploded view of an embodiment of the Hakenschieberteils with Exzenterverstelleinrichtung,

Fig. 2b

in a bottom view, a schematic exploded view of the embodiment of the Hakenschieberteils with Exzenterverstelleinrichtung FIG. 2a .

Fig. 3

in a side view of the embodiment of the Hakenschieberteils with Exzenterverstelleinrichtung FIGS. 2a and 2b in the connected state and

Fig. 4

in plan view a sectional view of an embodiment of the Hakenschieberteils with connected Exzenterverstelleinrichtung.

Ways to carry out the invention

FIG. 1 shows roughly schematically illustrated an embodiment of a tension lock device 1 according to the invention for shoes, especially ski or snowboard boots in a perspective view. The inventive clamping device 1 can be used for any type of shoes or for a shoe-like part comprehensive sports equipment in which a tailor-made adjustment of the shoe or shoe-like part with a high clamping force is desired, for example, for rollerblades, ice skates, mountain boots and work shoes.

The elongated clamping closure device 1 has a longitudinal extension in the direction of a longitudinal axis LA and is designed to be adapted to the arching shape of the shoe of its longitudinal extension according to substantially curved or arched. The clamping device 1 in the present embodiment comprises a clamping lever 2 and an elongated pulling device 3, wherein the clamping lever 2 is pivotally connected at one of its ends 2 'about a first pivot axis SA1 to a provided for attachment to the shoe support member 4. The elongate pulling device 3 is formed in two parts and consists of a hook pivoting part 7 and a hook sliding part 8 cooperating with the hook pivoting part 7.

The hook sliding part 8 is plate-like and has in the region of a second end 8 "on its upper side perpendicular to the longitudinal axis LA of the clamping device 1 extending, upwardly projecting web sections 8.1, which form hook-like connection means for connection to the hook pivot part 7. The bow-like in the example shown formed hook pivot member 7 is hinged about a parallel and spaced from the first pivot axis SA1 extending second pivot axis SA2 pivotally on the clamping lever 2 and has a hook-in strap section 7.1, which can be hooked to produce a tensile clamping connection in the hook-like web sections 8.1 of the hook slide part 8 the hook swivel part 7 and the hook slide part 8 is a coarse adjustment of the length of the clamping device 1 possible, this coarse adjustment of the length on the hooking of the bracket section 7.1 of the hook pivot part 7 in the one another spaced web sections 8.1 of the hook slide part 8 can only be done gradually.

The hook slide part 8 is connected to a second end 8 "opposite the first end 8 '(in FIG. 1 not visible, see eg FIGS. 2a, 2b ), with an intended for attachment to the shoe Exzenterverstelleinrichtung 5 in conjunction, which rotatably mounted eccentric module 9 (also in FIG. 1 not visible, see eg FIGS. 2a, 2b ) and is designed for fine adjustment of the length and thus the clamping force of the clamping device 1 according to the invention. The fine adjustment of the length via actuation of the eccentric module. 9 connected rotary handle element 13, wherein by a rotation of the rotary handle member 13 and thus of the eccentric module 9 about a rotation axis DA, which corresponds to a center axis MA of the eccentric module 9, a length adjustment takes place. The eccentric module 9 is designed such that the maximum possible adjustment path caused by rotation of the eccentric module 9 is at least equal to the distance between two web sections 8.1 of the hook slide part 8 in order to be able to achieve an actual fine adjustment between two coarse adjustment steps.

In the Exzenterverstelleinrichtung 5 of the illustrated example, a shaft member 16 is additionally provided, which has a preferably circular recess in which the Exzentermodul 9 (see FIGS. 2a, 2b and 3 ) is included at least in sections. This results in a lateral support and / or guidance of the eccentric module 9. Further, the shaft member 16 in a lateral edge portion on a slot-like feed opening, via which the first end 8 'of the Hakenschieberteiles 8 can be inserted to produce an operative connection to the Exzentermodul 9. The shaft member 16 secures in particular the hook slide part 8 laterally against tilting, with a certain angular change of the hook slide part 8 is released to allow adaptation to the caused by the different foot sizes change the bowl curvature of the shoe, especially ski or snowboard boot. This advantageously ensures a secure engagement of the hook pivoting part 7 in the hook sliding part 8. Preferably, the shaft member 16 is made of an at least partially elastic material, which allows an adaptation to the surface of the shoe or its flaps.

FIGS. 2a, 2b and 3 show an embodiment of the Hakenschieberteiles 8 and the Exzenterverstelleinrichtung 5, which includes a rotatable about the axis of rotation DA mounted eccentric module 9, as well as a connected to the eccentric module 9 rotary handle member 13 and fastening means 14 for attachment to the shoe, wherein in the FIG. 2a in an exploded view, a view from above, in FIG. 2b in an exploded view, a view from below and in FIG. 3 a side view is shown in a connected state.

According to the invention, the hook sliding part 8 in the region of its first end 8 'has an abutment section 10 with a convexly curved abutment surface 11 and the eccentric module 9 has a convexly curved guide surface 12 eccentrically around the center axis MA for abutment of the abutment section 10. The contact section 10 of the illustrated example is designed in the form of a projecting edge section at the first end 8 'of the hook sliding part 8, with the convexly curved contact surface 11 facing the second end 8 " Disposed distance to the contact portion 10 and its length is oriented substantially perpendicular to the longitudinal axis LA of the clamping device 1.

The substantially disc-shaped eccentric module 9 has on its underside 9.1 eccentrically to the center axis MA arranged, substantially cylindrical bulge 6, wherein the peripheral surface or lateral surface of the cylindrical bulge 6, the convex curved guide surface 12 for conditioning the convexly curved contact surface 11 of the contact section 10th forms. The eccentric module 9 is arranged on the upper side of the hook slide part 8 such that the cylindrical bulge 6 is received between the contact section 10 and the guide web section 8.2. In the installed state or in the state of tension, the convexly curved abutment surface 11 of the abutment section 10 and the convexly curved guide surface 12 of the eccentric module 9 bear against each other.

The Exzenterverstelleinrichtung 5 according to the invention further comprises a fastened to the top of the eccentric module 9 rotary handle member 13 in the form of a knob and is fastened via fastening means 14, preferably a dowel on the flap of the ski or snowboard boot. For receiving and passing through the fastening means 14, the eccentric module 9 has a through bore extending along the axis of rotation DA or center axis MA of the eccentric module 9. Also, other, not shown in the figures fastening means may be provided, via which the fitting screw 14 is connected to the flap of the shoe, in particular ski or snowboard boot. An adjacent to the contact section 10 or between the contact section 10 and the guide web section 8.2 arranged slot 15 in the hook slide part 8 is used for attachment of the shoe, wherein the fastening means 14 of the Exzenterverstelleinrichtung 5 is guided through the slot 15 and can be set in the shoe. The hook slide part 8 is thus fastened to the shoe so as to be displaceable in the direction of the longitudinal axis LA.

Due to the mutually adjacent convex guide and contact surfaces 12, 11, the hook slide part 8 is moved in the direction of the longitudinal axis LA of the inventive clamping device 1 by means of a rotary movement of the eccentric module 9 about the axis of rotation DA. A rotational movement of the eccentric module 9 about the axis of rotation DA therefore results in a linear movement of the hook sliding part 8 in the direction of the longitudinal axis LA of the inventive clamping device 1 and thus represents a fine adjustment of the clamping length of the inventive clamping device 1 and thus the clamping force generated by these.

FIG. 4 shows in plan view a sectional view of the Hakenschieberteils 8 with connected Exzenterverstelleinrichtung 5, cut along the in FIG. 3 indicated section line AA, so that in the FIG. 4 only the eccentric to the center axis MA arranged cylindrical bulge 6 of the eccentric module 9 is visible. The cylindrical bulge 6 of the eccentric module 9 forms with its circumferential or lateral surface the convexly curved guide surface 12 for abutment of the convexly curved contact surface 11 of the contact section 10 of the hook slide part 8 and is arranged on the upper side of the hook slide part 8 between the contact section 10 and the guide web section 8.2 , The convexly curved abutment surface 11 of the abutment portion 10 has a first radius of curvature r1 and the convexly curved guide surface 12 formed by the bulge 6 has a second radius of curvature r2, the first and second radius of curvature r1, r2 being approximately equal.

In the FIG. 4 the forces acting on the contact section 10 of the hook slide part 8 or on the convexly curved contact surface 11 of the contact section 10 are shown vectorially. The actual or resulting tensile force F _R acting in the region of the contact point between convexly curved contact surface 11 and convexly curved guide surface 12 on the contact section 10 is determined by the along the longitudinal axis LA of the tension lock device 1 acting tensile force Fz and the transverse force acting substantially perpendicular to this _Q. By the suitable choice of material combinations or material combinations with a coefficient of static friction of at least 0.2 for the abutting convexly curved contact surface 11 and the convex guide surface 12, can be effectively prevented that the contact and guide surface 11, 12 automatically or unintentionally relative move to each other and roll against each other. Only by intentional, external force, namely by the action of a rotational force to rotate the eccentric module 9 about the axis of rotation DA, the contact and guide surface 11, 12 are moved against each other, thereby enforcing a shift of the hook slide part 8 along the longitudinal axis LA.

LIST OF REFERENCE NUMBERS

1

Clamping closure device

2

clamping lever

2 '

End of the clamping lever

3

drawbar

4

supporting part

5

eccentric adjustment

6

cylindrical bulge

7

Hook pivoting part

7.1

bow section

8th

Hook slide part

8th'

first end of the hook slide part

8th"

second end of the hook slide part

8.1

web section

8.2

Guide web section

9

cam module

9.1

Bottom of the eccentric module

10

contact section

11

convexly curved contact surface

12

convex curved guide surface

13

Twist grip element

14

fastener

15

Long hole

16

shaft element

THERE

axis of rotation

F _Q

lateral force

F _R

resulting tensile force

Fz

traction

LA

longitudinal axis

MA

mid-axis

r1, r2

first and second radius of curvature

SA1

first pivot axis

SA2

second pivot axis

Claims (14)

Clasp fastening device (1) for shoes, in particular for ski or snowboard boots, comprising at least one tensioning lever (2) articulated on the shoe and a pulling device (3), wherein the pulling device (3) comprises at least one hook pivoting part (7) and one with the hook pivoting part (7 ), wherein the hook swivel part (7) is articulated on the clamping lever (2) and the hook slide part (8) is connected at a first end (8 ') to an eccentric adjusting device (5) for fine adjustment of the clamping force, wherein the Exzenterverstelleinrichtung (5) has at least one rotatably mounted eccentric module (9) and wherein the eccentric module (9) with the hook slide part (8) is in operative connection, that a rotational movement of the eccentric module (9) about an axis of rotation (DA) in a linear movement of Hakenschieberteils (8) along a longitudinal axis (LA) of the clamping device (1) is converted, characterized in that the hook slide part (8) in B Its eccentric module (9) at least one eccentrically about a central axis (MA) extending, convex curved guide surface (12) for conditioning the contact portion (10), wherein the convexly curved contact surface (11) of the abutment portion (10) of the hook slide part (8) and the convex curved guide surface (12) of the eccentric module (9) abut against each other. Clamping device (1) according to claim 1, characterized in that the abutment portion (10) of the hook slide part (8) as a projecting edge portion at the first end (8 ') of the Hakenschieberteiles (8) is formed, wherein the convexly curved contact surface (11) of the abutment portion (10) of the hook slide part (8) facing the first end (8 ') opposite the second end (8 ") of the hook slide part (8). Clamping device (1) according to claim 1 or 2, characterized in that the eccentric module (9) on an underside (9.1) arranged eccentrically to the center axis (MA), substantially cylindrical bulge (6) having a peripheral surface, wherein the convex curved guide surface (12) by the peripheral surface of the cylindrical bulge (6) is formed. Clamping device (1) according to one of claims 1 to 3, characterized in that the convexly curved abutment surface (11) of the abutment portion (10) and the convex curved guide surface (12) of the eccentric module (9) of predetermined materials with a static friction coefficient of at least 0th , 2, wherein the static friction between the contact surface (11) and the guide surface (12) is at least so large that an automatic rotational movement of the eccentric module (9) about the axis of rotation (DA) is inhibited by the static friction. Clamping device (1) according to one of the preceding claims, characterized in that the convexly curved abutment surface (11) of the abutment portion (10) of the hook slide part (8) has a first radius of curvature (r1) and the convexly curved guide surface (12) of the eccentric module (9). a second radius of curvature (r2), wherein the first and the second radius of curvature (r1, r2) are approximately equal. Clamping device (1) according to one of the preceding claims, characterized in that the convexly curved guide surface (12) of the eccentric module is equipped with an outer layer of a soft component. Clamping closure device (1) according to one of the preceding claims, characterized in that the hook slide part (8) additionally has a guide web section (8.2), wherein the guide web section (8.2) is arranged at a predetermined distance from the contact section (10). Clamping device (1) according to one of the preceding claims, characterized in that the hook slide part (8) substantially is plate-like and has at its top perpendicular to the longitudinal axis (LA) extending, upwardly projecting web portions (8.1), which form hook-like connection means. Clamping device (1) according to any one of the preceding claims, characterized in that the hook pivoting part (7) is substantially plate-like and has on its underside perpendicular to the longitudinal axis (LA) extending web portions, which form hook-like connection means. Clamping device (1) according to one of claims 1 to 8, characterized in that the hook pivoting part (7) is substantially bow-shaped and has at least one hookable strap portion (7.1) as a connecting means. Clamping device (1) according to one of the preceding claims, characterized in that the eccentric adjusting device (5) has a rotary handle element (13) and a shaft element (16). Clamping device (1) according to claim 11, characterized in that the rotary handle element (13) is designed as a rotary knob and fixed to an upper side of the eccentric module (9). Clamping device (1) according to claim 11 or 12, characterized in that the shaft element has a substantially rectangular or oval peripheral shape and is plate-like. Clamping device (1) according to any one of claims 1 to 13, characterized in that the Exzenterverstelleinrichtung (5) has a self-locking, by the mutual contact of the convexly curved contact surface (11) of the contact portion (10) of the hook slide part (8) and the convex curved guide surface (12) of the eccentric module (9) is generated.

Images