EP2925178B1 - Rotary closure for a shoe - Google Patents

Description

The invention relates to a screw cap for a shoe, in particular for a sports shoe, comprising: a housing attachable to the shoe, a rotatably mounted in the housing about an axis tensioning roller on which when tightening the shoe, a tensioning element can be wound, and a rotary knob to the the axle is rotatably mounted on the housing to rotate the tension roller. Furthermore, the invention relates to a shoe with such a rotary closure.

A generic rotary closure is for example from the DE 297 01 491 U1 known. Such a rotary closure should on the one hand at the tension of the clamping element (Schnürfaden or wire) by turning the knob with low torque and yet high clamping force allow the lacing of a shoe. On the other hand, a simple relaxation of the clamping element should be possible if the shoe is to be pulled out again.

Other important aspects are a light weight of the screw cap and a cost-effective production with as few parts.

There are turn locks with elaborate mechanisms known to make the relaxation of the clamping element in a simple manner possible, see US 2011/0266384 A1 ,

For example, the knob was already pivotally mounted or hinged to the housing, wherein after the pivoting or flaps of the knob a Entrastung the tension roller takes place, so that the tensioned clamping element is de-energized. In other solutions, a push button can be operated to make the unlatching of the tension roller. In various types of other rotary fasteners, planetary gears are used to reduce the rotational movement of the rotary knob to achieve said objectives.

A disadvantage of the known systems that the above requirements can not be brought together easily. Rotary seals that meet the mechanical requirements are often designed so complex that an expensive production with relatively many components is given.

The invention has the object of providing a rotary closure of the generic type so that on the one hand a light yet strong tension of the clamping element is given when closing the rotary closure and on the other hand, a simple release or unlatching of the clamping element should be possible. At the same time a lightweight construction to be given and a cost-effective production can be realized with few components.

• einen Zwischenträger, der um die Achse drehbar im Gehäuse angeordnet ist, wobei der Zwischenträger mindestens eine Sperrklinke aufweist, die in eine erste Sperrverzahnung eingreift, die am oder im Gehäuse angeordnet ist, so dass sich der Zwischenträger nur in eine Drehrichtung relativ zum Gehäuse drehen kann,
• mindestens einen im oder am Zwischenträger angeordneten und um eine zur Achse parallelen Achse schwenkbar im oder an Zwischenträger gelagerten Sperrhebel, wobei der Sperrhebel einen Sperrabschnitt aufweist, der ausgebildet ist, um in einer ersten Schwenkposition des Sperrhebels in eine zweite Sperrverzahnung einzugreifen, die an der Spannrolle angeordnet ist, und der weiter ausgebildet ist, um in einer zweiten Schwenkposition des Sperrhebels mit der zweiten Sperrverzahnung außer Eingriff zu gelangen,

wobei am Drehknopf ein erstes Steuerelement und ein zweites Steuerelement angeordnet sind, wobei das erste Steuerelement bei Drehung des Drehknopfs in eine erste Drehrichtung in einen ersten Kulissenabschnitt des Sperrhebels eingreifen kann, um den Sperrhebel in die erste Schwenkposition zu bewegen und den Zwischenträger samt Spannrolle zu drehen, und wobei das zweite Steuerelement bei Drehung des Drehknopfs in eine zur ersten Drehrichtung entgegengesetzten zweiten Drehrichtung in einen zweiten Kulissenabschnitt des Sperrhebels eingreifen kann, um den Sperrhebel in die zweite Schwenkposition zu bewegen.The solution of this object by the invention is characterized in that the rotary closure according to the aforementioned type further comprises:

• an intermediate carrier, which is arranged rotatably about the axis in the housing, wherein the intermediate carrier has at least one pawl which engages in a first locking toothing, which is arranged on or in the housing, so that the intermediate carrier can rotate only in one direction of rotation relative to the housing .
• at least one arranged in or on the intermediate carrier and about an axis parallel to the axis pivotally mounted in or on intermediate carrier locking lever, wherein the locking lever has a locking portion which is adapted to engage in a first pivot position of the locking lever in a second locking teeth on the tensioning roller is arranged, and which is further adapted to disengage in a second pivot position of the locking lever with the second ratchet teeth,

wherein a first control element and a second control element are arranged on the rotary knob, wherein the first control element can engage in rotation of the rotary knob in a first direction of rotation in a first link portion of the locking lever to move the locking lever in the first pivot position and rotate the intermediate carrier together with tensioning roller , And wherein the second control member can engage in rotation of the knob in a direction opposite to the first rotational direction of the second rotational direction in a second gate portion of the locking lever to move the locking lever in the second pivot position.

The housing preferably has a cylindrical shape.

The first locking toothing is preferably introduced on an inner circumference of the housing. This inner circumference is preferably cylindrical. The housing may be made of plastic, wherein the first locking toothing is formed in the material of the housing.

The second locking toothing and the tensioning roller are preferably designed as an integral part, in particular as an injection-molded component.

The axis of rotation for the relative to the housing movable or rotatably mounted parts is preferably formed by a bolt. Here is especially thought of a bolt (screw).

The tensioning element is usually a tensioning wire.

The two controls are preferably formed as formed on the knob pin-shaped projections, in particular as cylindrically shaped projections. The two controls can be arranged offset in the circumferential direction of the same diameter spaced from the axis lying.

The intermediate carrier preferably has two pawls, which are arranged with respect to the axis of rotation diametrically opposite to the intermediate carrier. The at least one pawl can be arranged as radially to the axis of rotation resilient portion on the intermediate carrier. The pawl may continue to extend as a substantially straight, tongue-shaped portion substantially in the circumferential direction of the intermediate carrier.

For reasons of production, the intermediate carrier advantageously consists of a sheet metal part on which the pawls are formed from the material of the intermediate carrier.

The locking lever is preferably made of metal.

The locking lever can be arranged in the direction of the axis of rotation projecting bearing pin, which is mounted in a recess in the intermediate carrier.

In this case, only a single locking lever is preferably arranged on or in the intermediate carrier.

The knob can eccentrically at a peripheral point, d. H. spaced from the axis of a recess, in particular a circular recess, have; the intermediate carrier may have on its side facing the knob a mark, wherein the mark is visible through the recess when the knob with its second control in the second link portion of the locking lever and thus the locking lever is in the second pivot position. This makes it possible to detect the positioning of the knob when the screw cap is in the unlocked position and the tension member (tension wire) is thus relaxed to remove the shoe. The marker is preferably formed as a color point.

Furthermore, the invention relates to a shoe, in particular a sports shoe, with a rotary closure of the type described.

After this, therefore, the proposed rotary closure on a housing in which the tensioning roller (winding wheel) for the clamping element (cable) is rotatably mounted, and that about the central axis. The tensioner roller is provided with a detent (second detent toothing), which allows a rotation in one direction of rotation, but this prevents the engagement of the locking lever. The locking lever is rotatably mounted in the rotatably mounted about the central axis intermediate carrier (support member), namely about a central axis parallel to, but spaced therefrom pivot axis. The intermediate carrier can - for the purpose of tension of the cable - be rotated about the central axis, but only in the clamping direction, which is achieved by pawls (spring tongues), which are arranged radially outwardly resiliently on the intermediate carrier and engage in the first locking toothing (locking profile), the the inside of the housing edge is incorporated.

The knob (cover), which is rotatably mounted about the central axis, has the two controls (driving cam). The first control engages when tensioning the cable (rotation in the direction of R1) on the intermediate carrier and rotates this together with locking lever in the closing direction. A reverse rotation of the tension roller is prevented in this case, because the locking portion (hook portion) of the locking lever engages in the second locking teeth of the tension roller, thus preventing the tension roller from rotating backwards.

If the rotary knob (cover) is rotated in the direction opposite to the clamping direction (direction of rotation R2), the second blocking element (driving cam) presses against the section-like section (second sliding section) of the blocking lever so that it is rotated about the pivot axis such that the locking section (FIG. Hook portion) is brought out of engagement with the second locking toothing (detent) of the tensioning roller; now The coiled cable can be pulled from the now freely rotatable tension pulley.

Advantageously, results in a simple structure with few parts, which not only keeps the manufacturing cost of the rotary closure low, but also minimizes the weight of the rotary closure.

The geometric design of the parts, in particular the tension roller, makes it possible with low torques on the knob, a high tensile stress in the clamping element is achieved when the shoe or the clamping element are tensioned.

However, it is possible by turning back the knob against the clamping direction of rotation to produce a Entrastungszustand in which the clamping element can be removed from the tensioner.

Fig. 1

in Explosionsdarstellung einen Drehverschluss für einen Sportschuh,

Fig. 2

einen Schnitt durch den Drehverschluss, der senkrecht zur Drehachse des Drehverschlusses verläuft, wobei ein verriegelter Zustand des Drehverschlusses dargestellt ist, und

Fig. 3

den Schnitt gemäß Fig. 2, wobei ein entriegelter Zustand des Drehverschlusses dargestellt ist.

In the drawing, an embodiment of the invention is shown. Show it:

Fig. 1

in exploded view a screw cap for a sports shoe,

Fig. 2

a section through the rotary closure, which is perpendicular to the axis of rotation of the rotary closure, wherein a locked state of the rotary closure is shown, and

Fig. 3

the cut according to Fig. 2 , wherein an unlocked state of the rotary closure is shown.

In the figures, a screw cap 1 can be seen, which can be attached, for example, on the instep of a shoe to serve to stoke the shoe; but other locations are possible, for. B. in the side area or in the heel area of the shoe.

The rotary closure 1 has a cylindrical housing 2, which consists of plastic and is provided on an inner cylindrical surface with a first locking toothing 8. By means of a bolt 16 (eg in the form of a screw with end-side closure by a nut), a central axis A is formed, by means of which various rotatable parts of the rotary closure 1 are mounted.

First, a tension roller 3 is freely rotatably mounted in the housing 2. On the tension roller 3, a tensioning cable or tensioning element 4 can be wound, in a known manner so that when winding the tightened shoe at the foot of the wearer is tensioned or laced.

On the upper side of the tension roller 3, a second locking toothing 11 is formed. The tension roller 3 is also made of plastic, so that the locking toothing 11 is formed by the injection molding of the molded part.

Placed on the tension roller 3 and also mounted about the axis A is an intermediate carrier 6, which consists of a stamped and formed sheet metal part. The intermediate carrier 6 has two pawls 7 which are provided and designed to engage in the first ratchet teeth 8. Accordingly, the intermediate carrier 6 can rotate relative to the housing 2 only in one direction of rotation (namely in the direction of rotation R1, s. Fig. 2 ); the opposite rotation is prevented by the engaging in the first ratchet 8 pawls 7.

Between the tension roller 3 and the intermediate carrier 6, a locking lever 9 made of metal (steel) is arranged. The locking lever has a bearing pin 17, which fits into a recess 18 which is incorporated in the intermediate carrier 6.

• In einer ersten Schwenkposition I (s. Fig. 2) greift der Sperrhebel 9 mit einem hakenartigen Sperrabschnitt 10 in die zweite Sperrverzahnung 11 ein. In dieser Position kann die Spannrolle 3 nur in Spannrichtung R1 gedreht werden. Das auf ihr aufgewickelte Spannelement 4 kann allerdings nicht abgewickelt werden, so dass das Spannelement 4 unter Spannung gehalten wird.

Therefore, the locking lever 9 about an axis B, which is parallel to the axis A, but spaced therefrom, pivot relative to the intermediate carrier 6 and occupy two pivotal positions in particular:

• In a first pivot position I (s. Fig. 2 ) engages the locking lever 9 with a hook-like locking portion 10 in the second locking teeth 11 a. In this position, the tension roller 3 can be rotated only in the clamping direction R1. However, the wound on her clamping element 4 can not be unwound, so that the clamping element 4 is kept under tension.

In a second pivot position II (s. Fig. 3 ), the locking portion 10 is brought out of engagement with the second locking teeth 11. Accordingly, now the tension roller 3 can rotate freely about the axis A, so that the wound tensioning element 4 can unwind.

Above the intermediate carrier 6, the rotary knob 5 is rotatably arranged about the axis A. The knob 5 has at its in Fig. 1 underneath underside two in the direction of the axis A and B protruding controls, namely a first control element 12 and a second control element 13. In the illustrations according to the Figures 2 and 3 is the Location of the two controls 12 and 13 to recognize. Both controls are - which is preferred - formed in the embodiment as a cylindrical in the direction of the axis A from the knob 5 projecting portions. They are provided alternatively cooperate with two slide sections 14 and 15 of the locking lever 9.

We in Fig. 2 can be seen, during the tensioning of the clamping element 4, that is, when winding the same on the tension roller 3, the knob 5 is rotated in the first direction of rotation R1. The first control element 12 is pressed by the rotation of the rotary knob 5 in the first gate section 14, which is why the locking lever 9 assumes the first pivot position I and thus engages the locking portion 10 in the second locking teeth 11.

During the rotation of the rotary knob 5 in the direction R1 not only unwinding of the clamping element 4 is prevented by the tension roller 3. Rather, the knob 5 takes over the first control 12, the intermediate carrier 6 together with locking lever 9 and (via the locking portion 10) the tension roller 3 in the direction of rotation R1, so that the clamping element 4 wound on the tension roller 3 and the tension roller 3 otherwise prevented from turning back is (said reverse rotation is prevented by the pawls 7 on the intermediate carrier 6).

During the rotation of the knob 5 in the opposite direction of rotation R2, however, is - as it Fig. 3 illustrated - the second control member 13 is pressed into the second gate section 15, which brings the locking lever 9 in the second pivot position II. The locking portion 10 comes out of engagement with the second locking teeth 11, so that the tension roller 3 is now freely rotatable and the wound tensioning element 4 can be withdrawn or unwound.

In the knob 5, a recess 19 is provided on the intermediate carrier 6, a color marking 20 (s. Fig. 1 ). About these elements can be made immediately visible to the user, whether the rotary closure in the unlatched position, ie the locking lever 9 in the second pivot position II, is. If the color marking 20 visible in the recess 19, the user knows that he has turned the knob 5 far enough in the second direction of rotation R2, so that the unlatching position of the rotary closure is reached.

REFERENCE LIST;

1

screw cap

2

casing

3

idler

4

clamping element

5

knob

6

subcarrier

7

pawl

8th

first locking toothing

9

locking lever

10

blocking portion

11

second locking toothing

12

first control

13

second control

14

first set of scenes

15

second set of scenes

16

bolt

17

bearing bolt

18

Recess (hole)

19

recess

20

mark

A

axis

B

axis

I

first pivot position

II

second pivot position

R1

first direction of rotation

R2

second direction of rotation

Claims (15)

1. Rotary closure (1) for a shoe, especially for a sports shoe, comprising:

   - a housing (2) which can be attached to the shoe,

   - a tensioning roller (3) which is rotatable supported around an axis (A) in the housing (2), wherein a tensioning element (4) can be spooled during lacing of the shoe on the tensioning roller (3) and

   - a rotary knob (5) which is arranged rotatable around the axis (A) at the housing (2) to turn the tensioning roller (3),

   characterized in
   that the rotary closure (1) furthermore comprises:

   - an intermediate carrier (6) which is arranged rotatable around the axis (A) in the housing (2), wherein the intermediate carrier (6) comprises at least one pawl (7) which engages in a first blocking gearing (8) which is arranged at or in the housing (2) so that the intermediate carrier (6) can only rotate in one direction of rotation relatively to the housing (2),

   - at least one locking lever (9) which is arranged in or at the intermediate carrier (6) and which is supported pivoting around an axis (B) which is parallel to the axis (A) in or at the intermediate carrier (6), wherein the locking lever (9) comprises a locking section (10) which is designed to engage in a second blocking gearing (11) in a first swivel position (I) of the locking lever (9), which second blocking gearing (11) is arranged at the tensioning roller (3), and which is further designed not to engage in the second blocking gearing (11) in a second swivel position (II) of the locking lever (9),

   wherein a first control element (12) and a second control element (13) are arranged at the rotary knob (5), wherein the first control element (12) can engage in a first crank section (14) of the locking lever (9) at the rotation of the rotary knob (5) in a first direction of rotation (R1) to move the locking lever (9) into the first swivel position (I) and to turn the intermediate carrier (6) together with the tensioning roller (3), and wherein the second control element (13) can engage in a second crank section (15) of the locking lever (9) at the rotation of the rotary know (5) in a second direction of rotation (R2) which is contrawise to the first direction of rotation (R1) to move the locking lever (9) into the second swivel position (II).
2. Rotary closure according to claim 1, characterized in that the housing (2) has a cylindrical shape.
3. Rotary closure according to claim 1 or 2, characterized in that the first blocking gearing (8) is formed into an inner circumference of the housing (2).
4. Rotary closure according to claim 3, characterized in that the housing (2) consists of plastic material, wherein the first blocking gearing (8) is formed into the material of the housing (2).
5. Rotary closure according to one of claims 1 to 4, characterized in that the second blocking gearing (11) and the tensioning roller (3) are formed as a one-piece part, especially as injection moulded part.
6. Rotary closure according to one of claims 1 to 5, characterized in that the axis (A) for the parts which are movable relatively to the housing (2) is realized by a bolt (16), especially by a screw bolt.
7. Rotary closure according to one of claims 1 to 6, characterized in that the two control elements (12, 13) are formed at the rotary knob (5) as pencilshaped protrusions, preferably as cylindrical formed protrusions.
8. Rotary closure according to claim 7, characterized in that the two control elements (12, 13) are arranged at the same diameter from the axis (A) and offset in circumferential direction.
9. Rotary closure according to one of claims 1 to 8, characterized in that the intermediate carrier (6) comprises two pawls (7) which are arranged at the intermediate carrier (6) diametrically with respect to the axis (A).
10. Rotary closure according to one of claims 1 to 9, characterized in that the at least one pawl (7) is arranged as an elastic section radially to the axis (A) at the intermediate carrier (6), wherein preferably the pawl (7) extends as substantially straight tongue-shaped section substantially in circumferential direction of the intermediate carrier (6).
11. Rotary closure according to one of claims 1 to 10, characterized in that the intermediate carrier (6) consists of a sheet-metal part at which the pawls (7) are formed from the material of the intermediate carrier (6).
12. Rotary closure according to one of claims 1 to 11, characterized in that a bearing bolt (17) is arranged at the locking lever (9) protruding in the direction of the axis (A) which is supported in a recess (18) in the intermediate carrier (6).
13. Rotary closure according to one of claims 1 to 12, characterized in that a single locking lever (9) is arranged at or in the intermediate carrier (6).
14. Rotary closure according to one of claims 1 to 13, characterized in that the rotary knob (5) comprises a recess (19) at a circumferential position eccentrically from the axis (A), especially a circular shaped recess, and that the intermediate carrier (6) comprises a marking (20), preferably a colour point, at its side facing the rotary knob (5), wherein the marking (20) is visible through the recess (19) when the rotary knob (5) is located with its second control element (13) in the second crank section (15) of the locking lever (9) and the locking lever (9) it located thus in the second swivel position (II).
15. Shoe, especially sport shoe, with a rotary closure according to one of claims 1 to 14.

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