Connecting organ
The invention relates to a connecting organ for pivotmgly connecting a shoe and a sports element, such as a skate blade or a roller skate, ski, or the like, equipped with at least one hinge which, when m use, is active during the process of straightening an ankle, the shoe being mountable on a support element, a first end liftably resting on the sports element and a second end, which is some distance removed from the first end, is connected via the hmge with a connecting organ that is mounted on the sports element.
Such a connecting organ is known from the Dutch patent 1008647 and from the not prepublished Dutch patent application 1011985.
The known connecting organ is embodied with a first and second h ge which, when use, are active during the process of an ankle straightening.
It is the object of the invention to improve the known connecting organ, such as to provide a simple construction by which to optimize the efficiency of the power transmission while the ankle is straightening during the thrust .
To this end the connecting organ according to the invention is characterized, m that the hmge comprises a hmge pm disposed at right angles to the longitudinal direction of the sports element m an imaginary plane which is oriented substantially perpendicularly to the sports element, intersecting the sports element m that plane at an angle other than a right angle. A plane forming an angle of approximately 20° with the vertically positioned sports element is within the framework of the invention considered to be oriented substantially perpendicularly .
It has been shown that the construction of the connecting organ according to the invention allows the
ankle to straighten properly during the thrust, thereby increasing the effectiveness of the thrust.
The known connecting organ is equipped with at least one first and one second hmge which, when m use, are successively active during the process of straightening an ankle, the first hmge being more less m the vicinity of a ball of a foot placed m the shoe, and being active m the first part of the ankle straightening, and the second hmge being positioned at the front of the foot and being active in the second and final part of the ankle straightening, such that the first and second hmge are active m succession without being active simultaneously, the support element being connected via the first hmge to one end of a coupling element which at its other end is connected via the second hmge with the connecting organ.
In a further aspect of the invention this connecting organ comprising at least two hinges is characterized m that at least the second hmge comprises a hmge p providing the connection between the coupling element and the connecting organ, and which is dispositioned at right angles to the longitudinal direction of the sports element m an imaginary plane oriented substantially perpendicularly to the sports element, intersecting the sports element m that plane at an angle other than a right angle.
An extra effect of the angled orientation of the hmge pm of the second hmge is that during the straightening of the thrusting leg, and especially during straightening of the ankle, the sports element, for example, a skate blade, retains its position better, i.e. m the direction of skating such as to reduce the deviation from the ideal l ne.
Desirably, the hmge pm is then provided with a first end which, when in use, is directed towards the body axis of a user, and a second end directed away from the user, which first end is lower than the second end when the user is standing.
A further improved embodiment of the connecting organ according to the invention, is characterized tna: the first hmge comprises a hinge pm providing the connection between the support element and the coupling element, and also which is dispositioned at right angles to the longitudinal direction of the sports element m an imaginary plane oriented substantially perpendicularly to the sports element, intersecting the sports element in that plane at an angle other than a right angle. In this embodiment also it is desirable for the hmge pm of the first hmge to be provided with a first end which, when m use, is directed towards the body axis of a user, and a second end directed away from the user, the first end being lower than the second end when the user is standing Here below, the invention will be further elucidated with reference to the drawing which shows a non- limitative exemplary embodiment of the connecting organ according to the invention as used with a skate blade. The connecting organ shown is intended for the right foot; for the left foot a mirror image of the embodiment is required. The drawing shows in
Figure 1, an exploded view of the connecting organ according to the invention used m combination witπ a skating blade; Figure 2, the connecting organ according to the invention used in combination with the skating blade m mounted condition;
Figure 3, a cross-sectional front view of the second hmge of the connecting organ as shown Figure 2 and
Figure 4, a cross-sectional front view of the first hmge of the connecting organ as shown m Figure 2
Similar components the figures are indicated by identical reference numbers. For the sake of completeness, it is noted that although the exemplary embodiment represented shows the connecting organ in association with a skating blade, the invention is not limited to this application and that the connecting organ
according to the invention may be used equally effectively with other kinds of sports elements such as roller skates, skis and the like Also for the sake of completeness, it is noted that the exemplary embodiment discussed oelow represents the connecting organ that is equipped with two hinges. However, within the framework of the invention the use of a connecting organ that is embodied with one single hinge is also applicable.
Referring first to Figure 2, the connecting organ according to the invention is generally indicated by reference number 1. The connecting organ 1 is provided with a first hmge 2 and a second h ge 3 which, when m use, are active successively during the process of straightening an ankle. The foot is surrounded by a shoe which is not shown and which is mounted on a support element 4, a first end 5 liftably resting on the skate blade 6 and a second end 7, which is some distance removed from the first end 5, is connected via the first hmge 2 with a coupling element 8 that is connected via the second h ge 3 with a connecting organ 9 mounted on the skate blade 6. Figure 1 shows an exploded view of the various components mentioned. Figure 2 clearly shows that while use, the first hmge 2 is more or less the vicinity of a ball of a foot that is placed m the shoe (not shown) , and is active at the beginning of the thrust, i.e during the first part of the ankle straightening. The second hmge 3 is located m front of the foot and becomes active m the second and final part of the thrust and the corresponding ankle straightening. By means of this construction the thrust is executed m two stages, which during the starting stage only the first hmge 2 is active, and at any predetermmable moment the second hmge 3 becomes active. In this latter stage the second hmge 3 is positioned such that an elongated lever is created, prolonging the contact of the skate blade 6 with the ice, thus increasing the efficiency of the thrust.
Within the capabilities of tne expert, various options are open for establishing the moment at which the second hmge 3 becomes active, which moment coincides with the moment at which the first hmge 2 has completed its full effect. For example, the support element 4 may be provided with an adjustable stop which may be locked m an appropriate position by means of a set screw, and which determines the maximum rotation of the support element 4 m relation to the coupling element 8. A person skilled m the art is completely familiar with such a solution so that it requires no further explanation.
For the sake of completeness, the figure also shows a torsion spring 10 which serves to drive the support element 4 with the shoe mounted thereon, into the direction of the skate blade 6 when not m action.
Figure 1 shows that the second hinge 3 comprises a hmge p 3' providing the connection between the coupling element 8 and the connecting organ 9. It can be clearly seen that a hmge p 3 ' is dispositioned m an imaginary plane oriented substantially perpendicularly to the sports element 6. This figure also shows that the first hmge 2 is executed similarly. This will be further elucidated with reference to the more explicit representation Figure 4. Figure 3, shows the connecting organ according to the invention m a cross-sectional front view, showing the hmge pm 3' m the plane of the drawing. The sports element 6 is oriented perpendicularly to this plane of the drawing. Figure 3 clearly shows that the h ge pm 3' intersects the sports element 6 at an angle other than a right angle, and that it extends at right angles to the longitudinal direction of the sports element 6.
Figure 4 clearly shows that the hinge pm 2 ' of the first hmge 2 also intersects the sports elements 6 at an angle other than a right angle and that it extends at right angles to the longitudinal direction of the sports element 6.
Referring to both Figure 1 and Figure 3, the hmge p 3' is shown to have a first end 3'' and an opposite end 3'''. During use, the first end 3'' is directed towards the body axis of a user, whereas the second end 3''' is directed away from the user. When the user, and consequently the sports element 6, are standing, the first end 3'' is positioned lower than the second end 3' ' ', as shown m Figure 3. By means of this construction, the contact of the skate blade 6 with the ice, especially at the end of the thrust, is prolonged as much as possible, thereby increasing the efficiency of the thrust.
The same type of construction is used for the first hmge 2, which may be elucidated with reference to the Figures 1 and 4. As explained above, the first h ge 2 comprises a hmge p 2' oriented at an angle. Said hmge pm 2' has a first end 2' ' and an opposite end 2 ' ' ' . During use, the first end 2'' is directed towards the body axis of a user, whereas the second end 2''' is directed away from the user. When the user, and consequently the sports element 6, are standing, the first end 2'' is m a lower position than the second end 2' ' ' . This construction contributes to the invention's objective of prolonging contact of the sports element 6 with the surface as much as possible, especially at the end of the thrust, m order to increase the efficiency of the thrust.