WO2007016983A1 - Turning fastener for a shoe - Google Patents

Abstract

A turning fastener for a shoe has a pulling means (6) with two end portions (6a, 6b), which act on a take-up reel (13), which is provided with an annular groove (16) for receiving the pulling means (6), a rotatable mounting of the take-up reel (13) with a bearing journal (12), which engages in a bearing, a holder (10), which can be fastened to the shoe, for the rotatable mounting, and an engageable and disengageable directional locking mechanism, which in the engaged position blocks the take-up reel (13) in one direction of rotation (B) for closing the shoe and in the disengaged position releases it in this direction of rotation (B). The take-up reel (13) is formed as a rotary grip, wherein two through-openings (17, 18), extending from the annular groove (16) to the end face of the take-up reel (13) that is facing away from the holder (10), are provided for leading one or the other end portion (6a, 6b) of the pulling means (6) through. The take-up reel (13) is guided in an axially displaceable manner with the bearing journal (12) and the bearing, and the directional locking mechanism is engaged in the position of the take-up reel (13) in which it is pushed towards the holder (10) and is disengaged in the position in which it is pushed away from the holder (10).

Description

 Screw cap for a shoe

The invention relates to a screw cap for a shoe according to the preamble of claim 1.

Such a rotary closure is known from DE 297 01 491 Ul. In this case, the bearing pin, which engages in a bearing bore in a retaining plate attached to the shoe tongue, arranged on a drive axle, which is provided with a rotary handle. On the drive shaft, the take-up reel is rotatably mounted and rotatably arranged a gear disc, which forms a reduction gear with an eccentric. The Richtgesperre is formed by a detent spring which engages in a toothing of the transmission plate. For the first fast closing operation, a slip clutch is provided between the rotary handle and the take-up reel. During the subsequent strong clamping operation, the reduction gear is actuated. To open the shutter, the detent spring is pulled out of the toothing with a Entrastmittel.

From DE 295 03 552 Ul a rotary closure is apparent in which the take-up reel is actuated via a planetary gear with a drive shaft on a rotary handle, being provided for opening the shutter disengageable by axial pressure actuation coupling element between the drive axle and planetary gear. For attachment of the traction means are in the hub of the take-up reel two through holes provided through which the two ends of the traction means are inserted.

In the screw cap according to US Pat. No. 6,289,558 B1, a toothing is provided as a coupling between a rotary handle axially displaceably mounted on a housing and a drive axle which actuates the take-up reel via a gear reduction gear, which is released when the rotary handle is tightened, whereby the take-up reel opens to open the shutter is released. The clamping position is secured by a ratchet mechanism between the handle and the housing. The two ends of the traction means are secured in radial bores of the take-up reel with grub screws. In order to be able to wind up a larger length of the traction means on the spool, as in the case of boots with a high shaft, a thin steel cable is used as traction means, but it kinks and breaks easily.

The known Drehverschlusse are quite expensive by their intricate structure. Although the closing process is shortened by the slip clutch according to DE 297 01 491 Ul, still takes in the known rotary fasteners tensioning the traction means by turning the rotary handle a lot of time, especially when large lengths of traction means must be wound, as in boots with a high shaft ,

The object of the invention is to provide a simply constructed rotary closure, with which the closing operation can be performed quickly.

This is achieved according to the invention with the rotary closure characterized in claim 1. In the dependent claims advantageous embodiments of the invention are shown. The rotary closure according to the invention consists essentially of the take-up reel, a bearing journal and a bearing for the bearing journal for rotatably supporting the take-up reel, a holder on the shoe for rotatable mounting and a directional locking mechanism. It distinguishes itself by a very simple structure. In contrast to the known screw caps, the rotary closure according to the invention thus has in particular no additional rotary handle, no separate reduction gear and no housing.

The Richtgesperre is preferably formed by a ratchet mechanism, wherein the pawls on the take-up reel or the holder and the recesses into which the pawls engage, are provided on the holder or the take-up reel. That is, the pawls may be provided on the holder and the recesses on the spool, or the spool may have the pawls and the holder may have the recesses.

The pawls are preferably formed by elastic tongues, which may be formed integrally with the take-up reel or the holder. Further, the journal may be formed integrally with the holder or the take-up spool and the bearing may be formed integrally with the take-up spool or the holder. The pawls or latch tongues are arranged on a circle coaxial with the journal and evenly distributed over the circumference.

Instead of a ratchet mechanism, the directional locking mechanism can also be formed by another ratchet, which in the coupled state is only rotatable in one direction, e.g. a gear or Reibgesperre.

Thus, the rotary closure according to the invention can be formed in the simplest case of only two parts, for example two plastic injection parts. The rotary closure according to the invention can thus be produced very inexpensively.

In addition, the closing operation can be carried out very quickly with the rotary closure according to the invention.

When the shoe is in the open position and the traction means is completely loose, as is the case when the tongue has been moved far out when opening the shoe, the traction means is pulled by hand through the two through holes in the take-up spool until the traction increases noticeably. At the same time the take-up reel is pushed against the holder, so that the directional lock is engaged, so locks the take-up reel to close the shoe in a rotational direction, whereupon the take-up reel designed as a rotary handle is rotated by hand to the traction means with high tensile force on the take-up reel wrap and tension the traction means until the shoe is properly seated.

Since, in particular, in shoes with shank, such as a snowboard boot, the far largest length of the traction device is pulled out only by the two through holes in the take-up shaft, only a short Zugmittelabschnitt needs to be wound up in the actual closing operation by turning the take-up reel.

The closing process can be done very quickly. Also, the rotary closure according to the invention can be opened in a fraction of a second, since only the take-up reel needs to be tightened slightly so that the directional lock is released, that is uncoupled. The bearing pin can be provided on the take-up reel and optionally formed integrally therewith. The bearing for the journal can then be formed by a bearing bore in the holder or for example by a preferably integrally formed with the holder sleeve. Preferably, however, the bearing pin is arranged on the holder, while the bearing is formed by an axial bore in the take-up reel.

The passage openings in the take-up reel may be formed by bores or, for example, by circular-arc-shaped slots arranged coaxially with the axis of rotation of the take-up reel.

For coupling and uncoupling the Richtgesperres the take-up reel is axially displaceable. It is guided axially by the journal and the bearing.

Preferably, however, the take-up reel on the bearing pin is plug-and formed by this peelable. Thus, the two end portions of the traction means can be easily pulled quickly through the two through holes of the take-up reel by being grasped only by hand, while the take-up reel, guided by the pulled Zugmittelendabschnitten pushed with the other hand to the journal and put on him becomes. To open the shoe then the take-up reel only needs to be pulled from the journal, preferably by tightening on the two Zugmittelenden.

Preferably, both the bearing pin and the axial bore are tapered conically in the take-up reel. As a result, the axial bore of the take-up shaft, which is conically enlarged in the direction of the holder, acts on the conically tapered end of the bearing shaft. can be plugged into the axial bore of the take-up reel, the attachment of the take-up reel on the bearing pin is facilitated.

The inventively designed as a rotary handle take-up reel is taken to rotate by hand on the circumference. It has ribs, a knurling or the like non-slip surface on the periphery.

In order to form a reduction, the hub of the take-up reel, so the annular groove of the take-up reel at its groove bottom a substantially smaller diameter than the outer diameter of the take-up reel. Preferably, the diameter at the groove bottom is at least a third, preferably at least half smaller than the outer diameter of the take-up reel.

The two passage openings in the side facing away from the holder end face of the take-up reel are preferably diametrically opposite, that is offset by 180 °, as close as possible to the groove bottom of the annular groove of the take-up reel. That is, their radial distance from the groove bottom is preferably at most one third of the radial distance between the groove base and the outer diameter of the take-up reel.

Preferably, the cross section of the annular groove of the take-up reel tapers to the groove bottom. Thus, if the two through holes are diametrically opposed, already after one revolution of the take-up reel, so if the tensile force of the traction means acting on the take-up spool is still relatively low, the two half-turn corresponding Zugmittelabschnitte on the groove bottom, leading to the two Through openings extend, further rotation of the rotary handle, the next turn of the traction device, whereby the Zugmittelabschnitte are fixed on the groove base so that no more pulling force is exerted on the guided through the through holes, resting on the groove base two Zugmittelendabschnitte on further rotation of the take-up reel. For this purpose, the groove in cross-section, for example, be V-shaped, or from one or each of the two groove walls, a groove wall portion may extend obliquely to the axis towards the other groove wall to form a narrow groove bottom. The groove bottom can be linear. Preferably, it is smaller than twice the thickness of the traction means.

In order for the take-up spool to remain fixed to the traction means when it has been pulled by the trunnion to open the shoe, the two traction means sections guided through the through-holes in the take-up spool are connected together at their ends, for example by a knot. Also, in the region of the interconnected end portions, a tab, for example, made of a textile material, leather or the like flexible material may be provided to hold the Zugmittelendabschnitte with the tab.

The traction means is preferably formed by a conventional lace or the like, in particular of plastic fibers, which are preferably braided. The thickness of such a rope formed from textile fibers may be for example 2 mm to 4 mm.

The holder with which the rotary closure is attached to the shoe is preferably formed by a holding plate, which may be incorporated, for example, in the shoe material.

The bracket may be attached to the side or rear of the shaft of the shoe, but preferably the rotary fastener is attached to the tongue of the shoe. The shoe preferably has a conventional lacing. That is, at the opposite edges of the closing tabs which engage over the tongue, low-friction deflecting points, such as loops made of metal or plastic, or textile bands, so-called "lace loops" are provided, through which the traction means is guided, wherein the traction means on the tongue between The take-up reel of the rotary closure is preferably arranged at the level of or above the uppermost deflection point on the tongue.

The traction means is thus performed under circulation points on the shoe on both sides of the shoe tongue. When the bracket is attached to the shoe tongue, it is forward, so offset to the toe, as well as the take-up reel, when it is in the pushed to the bracket position, in which the directional locking mechanism is engaged. By the two of the take-up reel adjacent deflection on both sides of the shoe tongue is thus, when the traction means is stretched, the take-up reel pulled back against the holder and thus the bearing pin in the camp and the directional locking mechanism securely held in the engaged position.

The rotary closure according to the invention is particularly suitable for shoes with shank, such as snowboard, ski, inline skating or skating boots or other sports shoes with shank.

Below, the rotary closure according to the invention is explained in more detail by way of example with reference to the accompanying drawings. Show:

Figures 1 to 6 in a perspective view of the individual steps when closing (Figures 1 to 5) and Opening (Figure 6) of the shoe only partially shown with a screw cap according to a first embodiment;

Figure 7 is a side view of the take-up reel of the rotary closure of Figures 1 to 6; and

Figures 8 and 9 in perspective view, the first two steps according to Figures 1 and 2 when closing the shoe, but of another embodiment of the rotary closure.

According to Figure 1, a shoe, of which only the shaft 1 is partially shown, at the edges of the two closing tabs 2, 3 designed as a pipe bend Umlenkstelen 4, 5, through which a traction means 6, for example, a shoe lace, is guided, which accordingly forms a conventional lacing crossing points 7 on the tongue 8 of the shoe, which engage over the closing tabs 2, 3.

In the height of the uppermost deflection point 4, 5 of the lacing shown in Figure 1 is fixed to the tongue 8 designed as a holding plate 9 holder 10, from which a bearing pin 12 extends forward, which tapers conically.

The bearing pin 12 serves for the rotatable mounting of a take-up reel 13. The take-up reel 13 has for this purpose an axial bore 14 into which the bearing pin 12 engages (FIGS. 3 to 6). The axial bore 14 is conical in the same manner as the bearing pin 12, that is, on the holder 10 facing the end face of the take-up reel 13 has a larger diameter than on its opposite end face. The take-up reel 13 is formed by ribs 15 on the circumference as a non-slip turning handle. It has a circumferential annular groove 16 which receives the traction means 6 during winding.

From the annular groove 16, two passage openings 17, 18 offset by 180 ° and formed by bores extend to the end face of the take-up reel 13 facing away from the holder 10, through which the two end sections 6a, 6b of the traction means 6 are guided.

Furthermore, a trained as a ratchet directional barrier is provided. The latch lock is formed by designed as elastic tongues 21 pawls facing away from the tongue 8 of the shoe end face of the holding plate 9 and a sawtooth-shaped pawl teeth 22 on the holding plate 9 facing end side of the take-up reel 13. The tooth spaces of the pawl toothing 22 thus form recesses into which the latch tongues 21 engage when, as shown in FIGS. 3 to 5, the takeup reel 13 on the bearing journal 12 is in the position pushed toward the holding plate 9. In this position, in which the ratchet gear is coupled, the take-up reel 13 is rotatable for closing the shoe only in the direction of rotation according to the arrow A (Figures 3 to 5), but not in the opposite direction of rotation corresponding to the arrow B (Figure 6).

According to Figures 1 and 2, the take-up reel 13 according to the arrow C on the bearing pin 12 can be plugged or deducted according to the arrow D of Figure 6 of the bearing pin 12.

As shown in Figure 7, the annular groove 16 of the take-up shaft 13 has a groove bottom 23 which by a the Axis 25 facing inner groove wall portion 19 'of the groove wall 19 is formed, which extends obliquely to the axis 25 to the other groove wall 20 with the two Durchgangsoffnungen, in Figure 7, only the opening 17 can be seen. The groove base 23 between the groove wall portion 19 'and the groove wall 20 is narrow, almost linear formed. It can also be seen from FIG. 7 that the passage opening 17 and also the diametrically opposite passage opening 18 (not visible in FIG. 7) penetrate into the groove 16 in the groove base 23.

From the drawing also shows that the two guided through the Durchgangsoffnungen 17, 18 end portions 6a, 6b of the traction means 6 are provided at their ends in the region where they are connected to each other, with a tab 24.

The holding plate 9, the latch tongues 21 and the bearing pin 12 are formed einstuckig, for example as a plastic injection molded part. Also, the take-up reel 13 with the pawl teeth 22 form a single plastic injection molded part.

The inventive rotary closure works as follows.

When the shoe is in the open position according to FIG. 1 and the traction means 6 formed by a lace, for example, is loose, as is the case when the tongue 8 has been moved out when the shoe is opened, the flap 24 will be at the end sections 6a, 6b the traction means 6 gripped with one hand and the two end portions 6a, 6b are stretched according to the arrow K (Figures 1 and 2). With the other hand, the take-up reel 13 is gripped and pushed according to the arrow C to the bearing pin 12 (Figures 1 and 2), put on him and then the Zugmittelendabschnitte 6a, 6b with the Lug 24 so far out of the openings 17, 18 pulled until the tensile force increases noticeably (Figure 3). Thus, the ratchet mechanism is engaged, ie the tongues 21 on the holding plate 9 engage in the toothing 22 on the take-up reel 13, so that the take-up reel 13 can only be rotated in the clockwise direction, ie in the direction of rotation according to the arrow A. If the take-up reel 13 is further rotated from the position in FIG. 3 by more than a half turn according to the arrow A, ie, for example, 270 ° to the position according to FIG. 4, it lays down into the groove through the two passage openings 17, 18 extending Zugmittelabschnitte on the groove bottom 23, the next turn of the traction means 6, whereby, as this winding is drawn with greater tension on the coil 13 of the deflection points 4, 5, the Zugmittelabschnitte are clamped on the groove base 23 so that on through the Durchgangsoffnungen 17, 18 guided two end portions 6a, 6b of the traction means during further rotation of the take-up reel 13 no tensile force is exerted more.

By further rotation of the take-up reel according to FIG. 5, the traction means 6 can be wound onto the take-up shaft 13 with a high tensile force by the reduction, which results from the ratio F: E, ie groove base diameter, and the shoe is laced until it sits comfortably.

Since the coil 13 adjacent two deflection points 4, 5 are offset from the coil 13 to the rear, the coil 13 is simultaneously pulled against the holder 10 and thus securely held on the bearing pin 12 by the tensioned traction means 6.

To open the laced shoe is the take-up reel 13 according to Figure 6 on the bearing pin 12 of the holding plate. 9 slightly pulled away according to the arrow D, whereby the ratchet mechanism is decoupled, so the latch tongues 21 and the teeth 22 are disengaged. This allows the take-up reel 13 back in the direction of arrow B, so that the shoe can be opened. The removal of the take-up reel 13 is otherwise preferably carried out by tightening the end portions 6a, 6b of the pulling means with the tab 24. At the same time the traction means 6 is unwound from the spool 13 and the spool 13 is rotated back into the starting position shown in Figures 1 and 2 ,

The embodiment according to FIGS. 8 and 9 differs from that according to FIGS. 1 to 7 essentially only in that the ratchet mechanism is provided by an internal toothing 26 of the take-up reel 13 and the latch tongues 27 on the circumference of a projection 27 on the holding plate 9.

Claims

claims A rotary closure for a shoe comprising a traction means (6) having two end portions (6a, 6b) which engage a take-up spool (13) provided with an annular groove (16) for receiving the traction means (6), a rotatable support the take-up reel (13) having a bearing pin (12) which engages in a bearing, a shoe-mountable holder (10) for rotatable mounting, and a retractable and disengageable directional locking gear, the take-up reel in a coupled position for closing the shoe ( 13) in a direction of rotation (B) locks and in the uncoupled position in this direction of rotation (B) releases, characterized in that the take-up reel (13) is designed as a rotary handle, two from the annular groove (16) to that of the holder ( 10) facing away from the end of the take-up reel (13) extending through openings (17, 18) for carrying one or the other end portion (6a, 6b) of the traction means (6) are provided, the take-up reel (13) with the bearing pin ( 12) and the bearing is guided axially displaceably and in the for the holder (10) pushed position of the take-up reel (13) the directional lock coupled and in the retracted from the holder (10) position is uncoupled. 2. A rotary closure according to claim 1, characterized in that the bearing pin (12) on the holder (10) angeord- is net and the bearing by an axial bore (14) of the take-up reel (13) is formed. 3. Rotary fastener according to claim 2, characterized in that the take-up reel (13) on the bearing journal (12) plug-in and peelable from this is formed. 4. Rotary fastener according to claim 2 or 3, characterized in that the bearing journal (12) and the axial bore (14) of the take-up reel (13) taper towards its from the holder (10) facing away from the end. 5. Rotary fastener according to one of the preceding claims, characterized in that the annular groove (16) of the take-up reel (13) at its groove bottom (23) has a diameter (F) which is smaller by at least one third than the outer diameter (E) of Take-up reel (13). 6. Screw cap according to one of the preceding claims, characterized in that the cross section of the annular groove (16) of the take-up reel (13) tapers to the groove bottom (23). 7. Screw cap according to one of the preceding claims, characterized in that the two passage openings (17, 18) are diametrically opposed to each other. 8. Screw cap according to one of the preceding claims, characterized in that the two through openings (17, 18) to the groove bottom (23) of the annular groove (16) extend. 9. screw cap according to claim 1, characterized in that the two through the passage openings (17, 18) in the take-up reel (13) guided Zugmittelendabschnitte (6a, βb) are connected together at their ends. 10. Rotary fastener according to claim 1, characterized in that the directional locking mechanism is formed by a ratchet gear with at least one pawl. 11. Rotary fastener according to claim 10, characterized in that the at least one pawl on the take-up reel (13) or the holder (1) and the recesses into which the pawl engages, on the holder (10) and the take-up reel (13). are provided. 12. Screw cap according to claim 11, characterized in that the recesses are formed by a pawl toothing (22, 25). 13. Screw cap according to claim 10 or 11, characterized in that the pawl by a resilient tongue (21, 27) is formed. 14. Screw cap according to claim 11 or 12, characterized in that the recesses and / or the tongue (21, 27) with the take-up reel (13) or the holder (10) are integrally formed. 15. Screw cap according to one of the preceding claims, characterized in that the bearing journal (12) with the holder (10) or the take-up reel (13) is integrally formed. 16. Rotary fastener according to one of the preceding claims, characterized in that the holder (10) by an ne attachable to the shoe retaining plate (9) is formed. 17. Rotary fastener according to one of the preceding claims, characterized in that the traction means (6) is formed by a shoelace. 18. Screw cap according to one of the preceding claims, characterized in that the holder (10) on the shoe tongue (8) is attached. 19. Rotary fastener according to claim 18, characterized in that the traction means (6) via deflection points (4, 5) on the shoe (1) on both sides of the shoe tongue (8) is guided and the Take-up reel (13) in the holder (10) pushed, engaged position opposite the two adjacent deflection points (4, 5) on both sides of the shoe tongue (8) is arranged offset to the front, with tensioned traction means (6), the take-up reel (13) against the holder (10) to draw.