JPH0241342B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for compressing the spring as a heel restraint energy source for normal skiing with little or no compression in order to make the skier's conscious effort to release the binding easier. The present invention relates to a ski boot heel fastener having a release means which can be operated with less force even in the so-called high release setting, in which the spring pressure is preset to a high level without any additional force.

In order to free his ski boot, which is fixed on his ski, from the restraint of a ski binding, a skier generally uses a release device, a so-called release lever, which is usually integrated in the heel binding, for example on a ski stock. It is necessary to operate according to However, the release lever is usually used to release the restraint by compressing a spring that serves as a restraint energy source built into the fastener, thereby disengaging the related parts that were previously under the control of the spring pressure. Therefore, especially in so-called high release adjustment where the initial deflection of the spring and thus the initial pressure are set high in advance, the operating force of the release lever is correspondingly high, ie, the opening lever becomes difficult to operate. This problem poses great difficulty, especially for beginners who often fall down on ski slopes, when operating the release lever in order to escape from an unnatural falling position.

Therefore, an object of the present invention is to restrain the heel of the shoe during skiing and absorb various external shocks when operating the release lever as a restraint release means built into the heel fastener of the ski boot. The engagement relationship between the shoe heel fixing part and the so-called heel holder, which is rotatably supported on the heel fastener main body without almost compressing the release spring and therefore receiving no resistance due to the deflection of the release spring, is established. It's about canceling it.

This objective can be achieved by the following means. That is, [1] Engagement pins that are located inside the main body of the heel fastener and engage with a cam that is constantly pressed forward by a release spring are provided on both side walls of the rotating main body that is integrally constructed with the heel receiver. be installed horizontally in a substantially horizontal groove, and be capable of sliding in the front-back direction.

[2] The release lever supported by a lateral pivot on the upper part of the heel fastener body has a grooved cam in its front portion, and when the rear portion of the release lever is rotated, the engagement pin is engaged. Controlled by the grooved cam to move forward or backward on a horizontal groove in the side wall of the rotating body.

The ski boot heel fastener according to the present invention is generally constructed as described above, and its specific details will be explained below based on the drawings.

In FIG. 2, a cam 3 that is slidable in the front and rear directions within the main body 1 by the elastic action of a release spring 2 is always pressed forward, but in this case, a stopper pin 4 penetrates the cam 3 in the lateral direction. When inserted, both ends of the stopper pin 4 are pressed against the front end walls of the elongated hole 5 fitted into both side walls of the main body 1, so that the rotation of the release spring pressure adjusting screw 6 and the spring receiver 7 screwed therein are controlled. The position of the cam 3 remains unchanged even if the initial setting pressure of the release spring increases due to forward movement.

On the other hand, in the upper part of the main body 1, a rotating body 8 integral with the heel receiving part 8A of the ski boot is rotatably supported upward by a pivot 9. Horizontal groove 8B almost parallel to the ski
(See FIG. 3), and an engagement pin 10 is provided in the horizontal groove 8B so as to be slidable in the front-rear direction.

On the other hand, as shown in FIG.
1 is mounted, for example, on a common pivot 9 with the pivoting body 8, in which case the release lever 11
A grooved cam 12 is bored in the front portion 11A of. The profile of the grooved cam 12 is similar to that of the release lever 1.
1. Before the rotation operation and the first half of the operation process 12A → 1
2B, the engagement pin 10 is in engagement with the engagement slope 3A of the cam 3, and the second half of the operation process 12
At B→12C, the engagement pin 10 is completely disengaged from the engagement slope 3A, and when the rotating body 8 attempts to rotate upward, it passes without contacting the cam tip 3B with enough time. In other words, the distance 1 to the bending point 12B of the grooved cam 12
2A→12B is formed by a substantially circular arc centered on the pivot 9, and thereafter 12B→12C is formed at an obtuse angle with respect to the tangent at the bending point 12B so that the engaged state is gradually released. This is desirable.

In that case, the distance 12 during which the engagement is maintained is
A → 12B is of such a length that it can withstand shocks from the outside world while skiing, and that the engagement pin will not immediately run into the disengagement path 12B → 12C side with a slight rotation of the release lever 11. Disengagement process 12
B → 12C indicates that when the release lever 11 is intentionally rotated, the engagement pin 10 moves forward on the horizontal groove 8B inside the side wall of the rotation body 8, and then the upward rotational movement of the rotation body causes the cam of the engagement pin 10 to move forward. It is carried to such a length that it is not disturbed by contact with the tip 3B.

In addition, in the ski boot heel fastener according to the present invention, when the ski boot is stepped into the fastener with snow attached to the back of the heel sole of the ski boot, the rotating body 8
is forcibly lifted upward by an amount corresponding to the thickness of the adhered snow layer, and as a result, the engagement pin 10 is also lifted, so the cam 3 moves backward while resisting the elastic force of the release spring 2. . In such a case, since the engagement pin 10 always receives the pressure of the release spring 2 via the cam 3, this pressure is further transmitted to the pressure surfaces 12A to 12B of the grooved cam 12, and as a result, the release operation by the release lever 11 is During the process, a frictional force is generated on the pressure surface, which may impair a light opening operation. Therefore, a preferred embodiment of the ski boot heel fastener according to the present invention includes the engagement pin 10.
Instead of receiving the pressure directly from the pressure surface 12A→12B of the grooved cam 12, which is usually stamped from a steel plate, the plastic material 13, which has low friction against the engagement pin 10, is viewed from above. By caulking and fixing to the front portion 11A of the release lever 11A over the entire inner width of the release lever 11, which is formed in a U-shape with the main body 1 in between, the engagement pin 10 is fixed to the front portion 11A of the release lever. If this pressure is received by the plastic material 13, the coefficient of friction between it and the engagement pin 10 will be reduced, so even when a layer of snow adheres to the back of the heel of the ski shoe, the release lever can be easily operated, which is convenient. It is.

In the ski boot heel fastener according to the present invention, during normal skiing, the release lever 11 always maintains the engagement pin 10 in the engaged state with the cam engagement slope 3A, as shown in FIG. A torsion spring 15 is fitted, for example, on the pivot shaft 9 between the front part of the rotating body 8 and the rear part of the release lever 11, and the moment of the torsion spring 15 constantly engages the front part 11A of the release lever. It is preferable to press and hold it against the dowel pin 10.

The ski boot heel fastener according to the present invention configured as described above can function as follows. That is, shocks that are not dangerous to the skier that occur during normal skiing are absorbed by the compression process of the release spring 2 when the engagement pin 10 moves within the range up to the cam tip 3B; When a dangerous load equal to or greater than the released release spring pressure is applied to the heel receiver 8A, the engagement pin 10 compresses the release spring 2 via the cam 3 and passes over the cam tip 3B, thereby preventing engagement. When released, the heel of the ski boot is released.

Next, when the skier consciously tries to release the heel of the ski boot from the binding due to an accidental fall or the end of skiing, the ski pole is attached to the rear part 11B of the release lever as shown by the imaginary line in FIG. 3. Alternatively, by applying a turning moment by hand, the engaging pin 10 is moved forward inside the horizontal groove 8B of the rotating body 8 by the grooved cam 12, and the cam engaging slope 3A is moved forward by the grooved cam 12.
Since the release spring 2 is completely released from the heel, the skier can release the heel restraint very easily by simply overcoming the resistance moment of the torsion spring 15 without being compressed. In addition, snow may accidentally adhere to the sole of the heel of the shoe, causing the heel receiver 8A and eventually the engagement pin 10 to be lifted up, causing the cam 3
Even when the release spring 2 is slightly compressed, the release lever 1 receives the pressure of the engagement pin 10.
A low-friction plastic material 13 is fixed to the grooved cam pressure surface 12A→12B on the opening lever 1, and since pressure is received by the plastic material 13, the release lever 11 can still be operated easily.

As shown in FIG. 4, when the engagement is released, the rotating body 8 rotates upward, and after the engagement pin 10 passes through the cam tip 3B and the top of the stepping slope 3C, it connects to the body 1. A positioning stop (not shown) provided therebetween stops the ski at the appropriate angle for heel depression. After that, in order to restrain the heel of the ski boot again in the fastener, when the heel of the ski boot depresses the pedal 8C, which is integrated with the rotating body 8, the engagement pin 10 must be inserted into the horizontal groove 8B of the rotating body. While occupying the innermost position of the engagement maintaining surface 12A of the release lever upper groove cam 12, run over the cam tip 3B and into the engagement slope 3A while resisting the elastic force of the release spring 2 via the cam depression slope 3C. The engaged state of the heel fastener is achieved by this.

Note that when the rear part 11B of the release lever is rotated by a ski pole or by hand when the pedal 8C is depressed, the engagement pin 10 moves forward in the horizontal groove 8B of the rotation body 8 by the grooved cam 12, and the cam moves forward. Since the tip 3B is easily crossed, the pivoting body 8 can be lowered and the heel of the ski boot can be fixed without retracting the cam depression slope 3C and therefore without compressing the release spring 2.

[Brief explanation of drawings]

1 is a plan view, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, FIG. 3 is a cross-sectional view taken along line B-B in FIG. Release state diagram. 1...Body, 2...Release spring, 3...Cam, 3
A... Engagement slope, 3B... Cam tip, 3C...
Stepping slope, 4...Stopper pin, 5...Elongated hole,
6...Release spring pressure adjustment screw, 7...Spring holder, 8...
Rotating body, 8A...heel receiver, 8B...horizontal groove, 8
C...Pedal, 9...Pivot, 10...Engagement pin,
11...Release lever, 11A...Front part, 11
B... Rear part of release lever, 12... Groove cam, 12B
...Bending point, 13...Plastic material, 14...
...Pin, 15...Torsion spring.

Claims (1)

[Claims] 1. A main body that is elastically supported on the ski in the front-back direction, and a pivot support in the lateral direction at the rear upper part of the main body, and that allows the heel of the ski boot to be elastically released upward. In a ski boot heel fastener consisting of a rotating body with a heel receiver supported on the body, an engaging pin that engages with a cam that is constantly pressed forward by a release spring inside the body is attached to a side wall of the rotating body. The front part of the release lever is a release lever which is provided in a groove substantially parallel to the plane of the ski provided inside and is slidable in the front and back directions, and which is pivoted laterally at the rear upper part of the main body. and a grooved cam, and when the rear portion of the release lever is rotated, the engagement pin is controlled by the grooved cam to advance or retreat on a parallel groove inside the side wall of the rotating body. A ski shoe heel fastener characterized by: 2. Claim 1, characterized in that the grooved cam consists of a substantially arc-shaped portion centered on the pivot of the release lever, and a bent groove forming an obtuse angle to the tangent to the arc-shaped portion. The ski shoe heel fastener described. 3. The ski boot heel fastener according to claim 2, wherein a low-friction plastic material is attached to the engagement pin pressure surface of the grooved cam. 4. A ski boot heel fastener according to claims 2 to 3, characterized in that a torsion spring is fitted between the front part of the rotating body and the rear part of the release lever.