SU674654A3 - Device for automatic release of ski boot - Google Patents

Description

This invention relates to devices for automatically releasing a ski boot from a mount on a ski. A device for an auto-release of a ski boot is known, which contains at least one ski boot lock with a support plate, a locking device, a force sensor mounted on the support plate and a threshold switch 1. I The well-known device in many cases provides reliable release of the ski boot, however, it also has its drawbacks. The main reasons are the lack of reliability in the operation of skis under conditions of prolonged stress, when, due to the constructive performance of the locking and locking devices, in the process of holding, the holding force decreases. The aim of the invention is to improve the reliability of the release of the ski boot under various conditions of use of the ski. This is achieved by the fact that the proposed device has a control unit consisting of a series electrically connected converter, a carrier frequency generator and an averaging element, the converter input being connected to the force sensor, and the output of the averaging elements to the threshold switch input, and the blocking device in the form of a crank lever, one shoulder of which is directly connected to the base plate, and the other through an intermediate locking lever, and an electromagnet, and Crankshaft rychag.a kinematically coupled with the core of the electromagnet, which is electrically connected to a threshold switch. The principle of operation of this device lies in the fact that in a given period of time the impulses acting on the foot of the skier, their duration, are then fixed, which are then compared with the specified value. Upon reaching this longitudinal value, the connection is disconnected between the skirt and the skier's boot. FIG. 1 shows a diagram of the device, side view; Fig. 2 shows the layout of the elements of the device; in fig. 3.4 and 5 depict the design of the locking device in the original and working: half; in fig. b - schematic diagram of the control unit; in fig. 7 - locking device option; in fig. 8 is a section A-A in FIG. 7,

The device for automatic release of the ski boot contains a bottom plate 1, on which the ski boot 2 is attached, a front lock 3 of the ski boot, which is designed for a different ski shoe adjuster and for a different thickness of the boot foot and can be adjusted in height and in the spring direction. The specified latch 4 is installed with. rotatable around the horizontal transverse axis 5 and rigidly connected to the pedal b. By the latch 7, the lock 4 is held in its initial position.

The latch can be retracted, for example, with a ski stick, as a result of which the latch 4 is released and the shoe 2 can be separated from the plate 1. When the shoe is inserted into the mount, the rear end of its sole acts on the pedal b, driving the rear fixator 4 into working position.

To the rear locking device, the driving unit E5 is connected to the control unit 8 and the locking device 9, which holds the rear end of the support plate 10. At the front end of the bottom plate 1 there is a groove 11, which includes two arms 12 of the supporting plate 10. The plates 10 are perpendicular to the surface of the ski with a slight deformation, and with a relatively large deformation, the forces are directed horizontally relative to the upper plane of the ski. In the heel of the ski boot, the basement plate 1 and the support plate 10 are connected via two shock absorbers 13, which perceive tensile and pressure forces directed perpendicularly to the upper plane of the ski with a slight deformation, and with a relatively large deformation-force parallel to the upper plane of the ski . The support plate 10 also has lateral protrusions-cams 14, which are in contact with the walls of the sub-base plate 1, due to which the transverse forces arising from the movement of the skier are absorbed.

At the rear end of the support plate, the sensor 15 of the force of the control unit 8 is fixed. The sensor can be made with an inductive-type capacitance, as well as piezoelectric elements or magnetoelectric measuring heads. The sensor 15, interacting with the rear end of the bottom plate 1, perceives and measures the torsional forces acting on this plate. Due to the presence of shoulders 1.2

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The support plate 10 and the shock absorbers 13 virtually eliminate interference when measuring the twisting forces. The locking device 9 contains a crank lever 16 consisting of arms 17.18 and a hinge 19, Ple 5 40 17 directly connected to the support plate 10, and the shoulder 18 with a locking lever 20, which is rotatably attached to the support plate 10. The crank lever 16 is in its strained, unstable position.

Fix the lever 20 1e of the figured form, and the shoulder 18 of the crank lever 16 is connected with one

J5 end, and the other end is made in the form of a ledge 21, which interacts with the notch of the rotary link 22 installed on the surface of the ski. The swivel 22 is held in the locked position by the action of the spring 23. To return the crank lever 16 to its extended position after moving the support plate 10 from 24 and to prevent it.

rotating it from involuntary folding, a spring 25 is provided, the Hinge 19 forms a gear unit controlled by the core 26 of the electromagnet (not shown in the figures), which is electrically connected

 noporoBfcJM switch 27, due to which there is a disconnection of the ledge 21 and the rotary link 22, and consequently, the separation from the ski 24 of the support plate 10 and associated with it

5 boots 2.

The control unit 8 includes, in addition to the force sensor IS, electrically,. between the transmission line 28, the converter 29, the carrier frequency generator 30, the rectifier 31, the averaging element 32 and the threshold switch 27.

The reactance of the capacitive sensor 15 is proportional to the distance of the sensor plates, since the voltage across the capacitor 33 (see Fig. 6) with the accumulated current is proportional to the distance between the sensor plates and thereby to the force. Accumulation. current is provided by the fact that the capacitor 34 of the converter 29 has a constant voltage determined by a constant voltage Vf.

The initial voltage Od (see Fig. 6) is almost equal in frequency and amplitude

equal to the voltage on the capacitor 33 of the sensor 15 force. The output voltage is applied to rectifier 31 and later. Element 32, which averages the input signal to

the magnitude best describing the change in effort and energy in static and dynamic (working) states.

The interlock with the device can also have a spring 35 (see

FIG. 7, 8), mounted on the surface of the cranks with the possibility of rotation on the vertical axis, while the spring 23 is mounted on its free end.

The spring 35 is fixed by two other springs 36, which hold it in the normal position on the ski through the corners 37.

Both springs 36 secure the spring 35 against lateral forces during normal movement of the skier.

The device for automatic release of the ski boot works as follows.

The force sensor 15 continuously detects pulses acting on the foot of the skier, which are compared with a predetermined value. If these pulses reach the limit value, threshold switch 27 sends a signal to an electric coil, the core 26 of which removes the crank lever 16 from its straightened position, resulting in a sharp release of the support plate 10 with the ski boot.

Under the action of the spring 25, the crank lever 16 can easily return to its commanded position.

After the locking device 9 has been triggered, the skier can get back onto the ski, with the front end of the support plate 10 entering under the bar 38 of the front lock 3, and the ledge 21 of the lever 20 snaps onto the rear end of the support plate 10 with a pivot link 22.

.When going on a ski effort, dey674654v

The skier's legs are twisted and, if it falls forward, are measured continuously. ,

This device is simple in design, not sensitive to changes in temperature, pollution, or obstruction.

Claims (1)

1. Patent of the USSR No. 280376, “l. A 63 C 9/08, 1967. 7 T GB P About 1/4. five Figg