JPH07148302A - Heel piece for safety binding - Google Patents

Abstract

(57) [Abstract] [Purpose] A ski safety having a sole holder pivotally supported on a casing by a horizontal axis and a release lever pivotable in relation to the casing about another horizontal axis. The heel piece for the binding is simple and compact in structure, the force transmission characteristics from the release lever to the sole holder can be widely selected for the opening process, and the reliability of the release can be impaired. Try not to. [Constitution] The horizontal axis B of the release lever 4 is the sole holder 3
It is located behind the horizontal axis A of.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heel piece for a safety binding, which casing is slidable rearward against a spring force in relation to a base plate which can be fixed to a ski, and the casing. A release spring provided therein, the release spring being supported at the rear by the casing and at the front by a slider slidable in the longitudinal direction and being pivotable on the casing by a transverse axis. A supported sole holder is provided, and the sole holder and the slider are engaged with each other via a control surface having a dead center and a control protrusion, and the casing is centered on another horizontal axis. A release lever is provided which is pivotable in relation and which has an operating arm and an actuating arm, said actuating arm being provided with a projection in its end range. This projection acts on the control track of the sole holder below the lateral axis of the sole holder, advantageously two projections and control tracks are provided on both side walls of the heel piece for release. The horizontal axis of the lever relates to a type which is arranged at a distance from the horizontal axis of the sole holder.

[0002]

A heel piece of this type is known, for example, from DE-A 3839078. In the heel piece described in this specification, the release lever and the sole holder are respectively supported by the casing so as to be pivotable about one horizontal axis, and the horizontal axis of the release lever is in front of the horizontal axis of the sole holder. It is located in. This arrangement of the transverse axis allows the heel piece to be closed by the release lever. Such a closure mechanism can be operated relatively easily, for example by hand, with a convenient lever.
However, the arrangement of the abscissa hinders easy opening of the binding and a large opening angle especially for the sole holder.

Another heel piece with a release lever and a sole holder is disclosed, for example, in EP-A-470.
No. 419 is known. In this heel piece, the release lever and the sole holder are supported on one common horizontal shaft. While such an approach seems to be convenient at first glance, there are problems, however. Due to the common rotation axis, the action points of the release lever on the sole holder are always located at the same distance from the rotation axis, so there is no variability in force transmission, and the transmission ratio is fixed at 1: 1. is there.

In another known heel piece (DE 38 26 410), rather than the release spring acting on the sole holder via a slider, it is provided in the area of the base plate. Acting on a release lever supported by a horizontal axis. The force of the release spring is transmitted to the sole holder via the release lever, which sole holder is supported in the upper region of the casing behind the transverse axis of the release lever and on another transverse axis. Therefore, in the automatic binding release device, the release lever is inevitably swung together by the sole holder when it falls, and for example, any release lever caused by snow or ice entering between the release lever and the casing upper surface. Will interfere with the automatic release function. It must be pointed out that, from a structural point of view, arranging the two transverse axes is inconvenient since it requires valuable space in the casing.

[0005]

SUMMARY OF THE INVENTION The object of the invention is to improve a heel piece for safety bindings of the type mentioned at the outset, which is simple and compact in construction, from the release lever to the sole holder. It is an object of the present invention to provide a heel piece in which the force transmission characteristics can be widely selected for the opening process and the release reliability is not impaired. Furthermore, it is an object of the invention to produce as large a pivoting movement of the sole holder as possible during the opening process.

[0006]

In order to solve this problem, in the structure of the present invention, the horizontal axis of the release lever is located behind the horizontal axis of the sole holder.

[0007]

According to the present invention, the force can be smoothly exerted by the release lever at the time of manual release, and the certainty of the automatic release does not have any adverse effect, and it is mechanically simple. Thus, a simple and compact structure can be obtained. Another advantage of the heel piece according to the invention is that it causes a particularly large pivoting movement of the sole holder, for example by transmitting the pivoting movement of the release lever to the sole holder, which makes it very easy to attach to and detach from the binding. Made simple.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings.

The heel piece according to the invention shown in FIGS. 1 to 3 comprises a casing 1 in which a release spring (not shown) is mounted. This release spring is supported on the front by a slider 2 which is guided in a casing. Furthermore, in the casing 1,
A sole holder 3 that swivels around the horizontal axis A and a release lever 4 that swivels around another horizontal axis B are provided. In the illustrated embodiment, the two horizontal axes A and B are located in front of the release spring and above the central axis of the release spring. The sole holder 3 has on its side facing the slider 2 a control projection 5 which is guided through the control surface 6 of the slider 2 and is loaded in a known manner by the spring force of a release spring. There is. The control surface 6 of the slider 2 is
It consists of two parts 6 ', 6 "which are respectively inclined and curved at different angles, these two parts being dead points T
Are connected to each other.

Further, the sole holder 3 includes a slider 2
A control track 7 is provided substantially below the control protrusion 5 on the side facing the. This control track consists of two linear sections 7 ', 7 ", each inclined at a different angle, these two sections being connected to each other at an inflection point K. In the illustrated embodiment, this control track is shown. Two of them 7 are formed, and when viewed from above (see FIG. 3), they are located symmetrically with respect to the central axis of the longitudinal direction and are located directly outside the casing wall. The actuating arm 4 ″ of the release lever 4, which is formed in the form of a projection 8, acts on it.
In this embodiment, two projections 8 are formed as in the control track 7, and are located on both outer side walls of the casing 1 when viewed from above.

A release lever 4 consisting of an operating arm 4'and an actuating arm 4 "is mounted on the casing 1 via two short pins 9a, 9b arranged along the transverse axis B, on which it is mounted. On the other hand, the sole holder 3 is supported on the casing 1 by one pin 10 arranged along the horizontal axis A.

The mode of operation of the heel piece of the present invention is as follows.

Starting from the closed position of the heel piece shown in FIG. 1, the heel piece can be opened by operating the release lever 4. When the operating arm 4'of the release lever 4 is swung downward about the horizontal axis B by the action of force, at the same time, the actuating arm 4 "is swung upward. The protrusion 8 provided on the operating arm 4 ″ of the lever 4 is
First of all, it moves along the first part 7 ′ of the control track 7. The pivoting movement of the release lever is transmitted to the sole holder at a predetermined ratio according to the inclination of the first part 7'of the control track 7 associated with the lever arm formed by the actuating arm 4 "of the release lever 4. The control projection 5 of the sole holder 3 during movement is guided downwards along the first portion 6'of the control surface 6 first until the dead point T is reached.
When the control projection 5 of the sole holder 3 reaches this dead point T, the projection 8 provided on the actuating arm 4 ″ of the release lever 4 is located substantially at the inflection point K. Above T, only a small force is required to fully open the heel piece. When the pivoting movement of the release lever 4 is further performed, the projection 8 of the actuating arm 4 ″ causes the projection 8 of the control track 7 to move. Sliding along the second part 7 ″, the pivoting movement of the release lever is transmitted to the sole holder 3 in a greater ratio by the flat inclination of this second part 7 ″ of the control track. In this case, the control projections 5 of the sole holder 3 are the control surfaces 6 provided on the slider 2.
2, along a second portion 6 "of the guide, further downwards to the end position.

As described above, by transmitting the movement of the release lever 4 to the sole holder 3 in accordance with the present invention, a particularly large pivotal movement of the sole holder is generated, so that the sole holder can be attached to and removed from the ski binding. Keep it simple. The transmission ratio can be arbitrarily selected depending on the shape of the control track. That is, the control trajectory does not necessarily have to be configured by a straight portion, and may be curved in a convex shape or a concave shape. In some cases, there may be no inflection point or it may be constructed as a high degree curve.

Since the position of the horizontal axis B of the release lever 4 is kept at a distance from the horizontal axis A of the sole holder 3, the length of the lever arm of the sole holder can be changed, and by extension, the heel piece can be opened. Has the great advantage that not only the transmission ratio but also the force transmitted to the sole holder changes. This allows the heel piece to be optimally designed both for the largest possible opening angle of the sole holder and for the optimal force transmission characteristics. In this case, the horizontal axis B does not necessarily have to be arranged behind the horizontal axis A at substantially the same height as the horizontal axis A, as in the illustrated embodiment, but depending on the space provided, the horizontal axis A It may be arranged in front of or above or below. The best distance between the horizontal axes A and B is defined by the desired force transmission characteristics and is mainly empirically determined.

[Brief description of drawings]

FIG. 1 is a side view of a heel piece of the present invention in a closed state.

FIG. 2 is a side view of the heel piece of the present invention in an open state.

FIG. 3 is a plan view of the heel piece of FIG.

[Explanation of symbols]

 1 Casing 2 Slider 3 Sole Holder 4 Release Lever 4'Operating Arm 4 "Operating Arm 5 Control Protrusion 6 Control Surface 6 ', 6" Part 7 Control Track 7', 7 "Part 8 Protrusion 9a, 9b Pin 10 Pin A, B Horizontal axis K Inflection point T Dead point

Claims (4)

[Claims] 1. A heel piece for a safety binding, comprising a casing (1) slidable rearward against a spring force in relation to a base plate fixable to the ski, and in the casing. A release spring provided, which is supported at the rear by the casing and at the front by a slider (2) which is slidable in the longitudinal direction and which has a horizontal axis (A).
Sole holder (3) pivotally supported by
The sole holder (3) and the slider (2) are engaged with each other via a control surface (6) having a dead center (T) and a control protrusion (5), and Can be swiveled in relation to the casing (1) about the horizontal axis (B) of the operating arm (4 ') and the operating arm (4 ").
There is provided a release lever (4) provided with and the actuating arm (4 ″) is provided with a projection (8) in its end region, which projection corresponds to the lateral axis (A) of the sole holder (3). ) Is acting on the control track (7) of the sole holder (3), and the horizontal axis (B) of the release lever (4) is spaced from the horizontal axis (A) of the sole holder (3). For safety binding, characterized in that the horizontal axis (B) of the release lever (4) is located behind the horizontal axis (A) of the sole holder (3) of the type described above. Heel piece. 2. Heel according to claim 1, wherein the horizontal axis (B) of the release lever (4) and the horizontal axis (A) of the sole holder (3) are located in front of the front end of the release spring. piece. 3. The horizontal axis (B) of the release lever (4) and the horizontal axis (A) of the sole holder (3) are located above a horizontal plane extending through the central axis of the release spring.
The heel piece according to claim 1. 4. The control track (7) on which the actuating arm (4 ″) located below the horizontal axis (A) of the sole holder (3) acts, is linearly inclined at different angles.
Heel piece according to any one of claims 1 to 3, comprising three parts (7 ', 7 "), which parts (7', 7") are connected to each other at an inflection point (K).