Buckles – buttons – clasps – etc. – Strap tighteners – Accordion straps
Patent
1995-06-05
1997-03-04
Brittain, James R.
Buckles, buttons, clasps, etc.
Strap tighteners
Accordion straps
A43C 1100
Patent
active
056067780
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a shoe closure having a grooved roller mounted rotatably in a bearing element to wind up at least one rope-like tightening element to close the shoe, a rotating element to actuate the grooved roller and a reducing gear between the rotating element and the grooved roller in the form of an eccentric drive. In particular, to such a closure in which an eccentric sliding drive gear is coupled with the grooved roller and can be driven by the rotating element, the eccentric sliding drive gear being mounted on an eccentric driving pin that has a periphery toothing that connects with a countertoothing of a housing wall placed concentrically to the central axis of the rotating element surrounding the eccentric knob.
DESCRIPTION OF RELATED ART
There, a self-locking eccentric gear is provided as a reducing gear. In this case, the rope pulley is placed directly on the eccentric driving wheel and takes part in the eccentric movement of the eccentric driving wheel when tightening and loosening the tightening element. In this way, nonuniform tightening or pulling movements result.
SUMMARY OF THE INVENTION
With this invention, the object is to be achieved to improve the known shoe closures so that nonuniform tightening or pulling movements of the tightening element or tightening elements no longer occur.
This object is achieved by the features that the grooved roller is designed as an independent unit rotatably mounted concentrically with respect to a central axis and the eccentric sliding drive gear is mounted to move parallel to the grooved roller by an eccentric driving pin in a plane parallel to the grooved roller and has one or more circular openings, the center(s) of which lie on a circle that is concentric to its axis of rotation, and twice the radius of the circular openings is at least approximately equal to the sum of diameter of a coupling pin attached to the grooved roller and a diameter of the circular path of the eccentric driving pin.
This invention is distinguished especially in that a completely uniform rotation corresponding to the rotation of the rotating element is achieved by the separate arrangement of the rope pulley and by its drive by the one or more circular openings of the eccentric sliding drive gear. The desired reduction is produced from the selected number of teeth of the gear drive. As a result, a very sensitive adjustment of the closing pressure of this shoe closure according to the invention is possible.
Especially advantageous is that the eccentric drive can be designed so that--in contrast to the previously known solution--it is self-locking in both directions.
Also advantageous is that between one of the rotatable parts and a stationary housing part or a part fastened or fastenable to the housing part, catching elastic means are provided that catch, in a locking way, in every adjusted rotary position, but whose locking action can be overcome to change the rotary position by a torque acting on the rotating element.
Other advantageous details of the invention are based on the embodiments illustrated in the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows the arrangement of the individual parts of the shoe closure according to the invention as an exploded view,
FIG. 2 shows the shoe closure according to claim 1 in the assembled state, viewed respectively from the side and in section,
FIG. 3 is a top view of a rotating element of the shoe closure,
FIG. 4 is a top view of a stop spring the shoe closure,
FIG. 5 is a bottom view of a disk of a rotating element of the shoe closure,
FIG. 6 is a top view of the disk shown in FIG. 5,
FIG. 7 is a top view of the eccentric sliding drive gear,
FIG. 8 is a top view of a grooved roller of the shoe closure,
FIG. 9 is a top view of a housing part of the shoe closure,
FIG. 10 is a view along section I--I of FIG. 2 and
FIG. 11 is a view along section II--II of FIG. 2.
DETAILED DESCRIPTION OF THE DRAWINGS
According to FIGS. 1 and 2, the shoe closure according to the invention has a housin
REFERENCES:
patent: 4433456 (1994-02-01), Baggio
patent: 4748726 (1988-06-01), Schoch
patent: 4961544 (1990-10-01), Bidoia
Brittain James R.
PUMA AG Rudolf Dassler Sport
Safran David S.
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