FR2629354A1 - SECURITY FASTENING FOR SKI - Google Patents

Abstract

The present invention relates to a ski safety binding intended to hold, in a releasable manner, the front of a boot mounted on the ski. This binding is characterized in that the body 5 is mounted to tilt on the base 4, 18, in its front part, around a horizontal and transverse axis 6, and at least one rigid connecting member 19 extends between the force transmission member 14, 25 and a fixed articulation point 17 on the base 4, 18 placed in such a way that the lifting movement of the jaw 7, in the event of a rear fall of the skier, causes a displacement of the force transmission member 14, 25 in the direction causing additional compression of the energy spring 12 of the energization mechanism.

Description

The present invention relates to a security attachment

  for skiing intended to maintain, in a triggering manner,

  the front of a shoe mounted on the ski.

  Ski safety bindings already known as "front stops" are already known. which comprise a body mounted on a base integral with the ski. this body bearing. in its rear part, a jaw retaining the shoe which has two opposing lateral retaining wings,

  and an energizing mechanism housed in the body for rap-

  elastically peeling the jaw in the engaged position, the energizing mechanism comprising a compressed energy spring bearing, at one end, on a bearing surface connected to the body and at its other end. on a longitudinally movable force transmission member

  in the body and coupled to the jaw in such a way as to

  elastically allow this jaw against the front of the shoe, to ensure the retention of it. on the ski

  Front stops of the type described above are de-

  for example in FR-A-2 179 783

and DE-PS-2 366 249.

  The front stop described in the patent FR-A-2 179 783 comprises a retaining jaw which consists of two independent wings, articulated about respective axes and cooperating, by their anterior or internal ends, with the end part of a pulling slidably mounted longitudinally and biased by a spring forming part of the

energy mechanism.

  The front stop which is described in patent DE-PS-2 366 249 is also of the type with independent lateral retaining wings, articulated around respective axes,

  and it has a clamp that is movable vertically-

  and whose vertical upward movement in the case of a fall of the skier, causes a compression of the spring of the energizing mechanism. that is to say, a lighter

  the hardness of fixation, in other words a decrease in

  the force required for lateral activation of the

front stop.

  The present invention relates to improvements made to these various types of safety attachment or front stop in order to improve their reliability and in particular

  their sensitivity to triggering under the effect of

  side quote combined with a skier's back drop,

and this by very simple means.

  For this purpose, this ski safety binding intended to maintain, in a triggerable manner, the front of a shoe mounted on the ski, comprising a body mounted on a base integral with the ski, this body carrying, in its rear part, a shoe holding jaw which includes a sole clamp and. two opposing lateral retaining wings, and an energizing mechanism housed in the body

  to resiliently return the jaw to the position of

  this energy mechanism comprising a resumption

  energy spell taking support, at one end. on a gold-

  transmission of effort longitudinally movable in the body and coupled to the jaw so as to elastically solicit this jaw against the front of the shoe

  to ensure its restraint on the ski, is characterized

  in that the body is pivotally mounted on the base, in its front part, about a horizontal and transverse axis, and at least one rigid connecting member extends

  between the force transmitting member and a reference point

  fixed position on the base placed in such a way that the lifting movement of the jaw, in the event of a fall of the skier, causes a displacement of the

  transmission of effort in the direction resulting in compres-

  addition of the energy spring of the energy mechanism

gisation.

  The following will be described by way of nonlimiting examples.

  various embodiments of the present invention with reference to the accompanying drawing in which:

  FIG. 1 is a vertical sectional view and

  of a forward stop according to the invention, in posi-

  interlocking mechanism, the energizing mechanism comprising

  a pusher pushed back by the energy spring

  ogy. FIG. 2 is a horizontal sectional view made

  along the line II-II of Figure 1.

  Figure 3 is a rear view of the front stop.

  4 is a vertical and longitudinal sectional view of the front stop of FIG. 1, the body of which is

  represented upwards under the effect of a request

  vertical tilt due to a fall of the skier.

  FIG. 5 is a vertical sectional view and

  of a variant embodiment of the front stop in which the energizing mechanism comprises a longitudinal pulling biased forward and acting on

articulated wings of the jaw ..

  Figure 6 is a horizontal sectional view taken

  along the line VI-VI of Figure 5.

  FIG. 7 is a vertical sectional view and

  of a variant embodiment of the front stop in which the energizing mechanism comprises a piston

  backward and acting on articulated wings

jaw lines

  FIG. 8 is a horizontal cross-sectional view of

  piston and a lateral retaining wing with

which he is in contact.

  FIG. 9 is a vertical sectional and longitudinal view similar to that of FIG. 7, the body of the fastener being shown raised in the event of a fall

back of the skier.

  With reference to FIGS. 1 to 4, it can be seen that these figures represent a safety attachment 1 which is intended to hold the front of a ski boot 2, shown in phantom, on a ski 3. The attachment of safety or front stop 1 comprises a base 4 attached to the ski 3 and on which is mounted a body 5 which can tilt relative to the base 4 about a horizontal and transverse axis 6 located at the front of the body 5. This body 5 includes. in its posterior part, a jaw 7 intended to maintain the

  upper edge of the sole of the shoe 2, this

  chime 7 comprising two lateral wings 8 possibly ensuring

  the support of the shoe in the vertical direction.

  The jaw 7 may be of the one-piece type. mobile side-

  Alternatively, each of the lateral wings 8 may be hinged to the body 5 about a vertical axis, being held by locking means. The energizing mechanism of the front stop 1 which is contained in a longitudinal housing 11, integral with the base 4 or provided in the tilting body 5, comprises a spring 12, extending longitudinally and which bears, at its front end, on the transverse bottom of an anterior cap 13. This cap 13 is screwed onto the threaded front portion of the housing 11. The spring 12 takes

  support, at its posterior end, on a trans-

  exercise mission 14 which is constituted by a piston mounted longitudinally movable in the housing 11 and which is thus resiliently biased backwards by the spring

  12. The compression ratio of the energy spring 12 determines.

  the "hardness" of the fixation and this degree of hardness depends on the

  degree of screwing of the plug 13 in the housing 11.

  The piston 14 carries, on its rear face, a roller 15 which is pushed backwards, against a ramp 16 integral with the jaw 7. The locking mechanism of the jaw 7 or its lateral retaining wings, when the latter These are articulated around respective axes, can be of any type known in the art. The jaw 7 or at least its lateral retaining wings are

  thus held elastically, in the engaged position.

  under the action of the spring force 12 which is transmitted by

the piston 14 and the roller 15.

  According to the invention the piston 14 is connected, from

  that side, at a fixed hinge point 17 carried by the base 4. This hinge point 17 may be provided on a column 18 from the base 4 and which carries, at its upper end, the axis 6 of tilting of 5. The connection between the piston 14 and the fixed hinge point 17 is

  performed on each side. by means of a tie rod 19 which

  in its anterior end, a long light

  longitudinal 20 in which is engaged a lateral pin 21

  integral with the piston 14. This piston 14 thus carries two

  horizontal coaxial tines 21 aligned transversely and which are coupled to the two tie rods 19. via the

  20. These nipples 21 are in contact with the ends

  Posterior mutations of the lights 20, in the engagement position as shown in FIGS. 1 and 2. They can thus slide a little backwards to

  allow the necessary longitudinal clearance of the piston 14.

  The preceding arrangement can be naturally reversed, that is to say that the pins 21 can be carried by the tie rods 19, engaging in

  lights 20 formed in the lateral faces of the piston 14.

  Each fixed hinge point 17 is located, in this non-limiting embodiment, below. of the tilting axis 6 of the body 5, substantially vertically of this axis, and the axis 6 of the tilting of the body 5 and the hinge points 17 are respectively located above and

  below the horizontal plane P passing through the lateral lugs

  21 of the piston 14. Thus the tie rods 19

  are inclined from top to bottom and from back to front.

  When there is a skier's fall, the sole of the shoe 2 lifts the jaw 7, as shown in FIG. 4, and the jaw 7 carries with it the body 5 which thus switches in the direction of the skier.

  clockwise around the horizontal and trans-

  versal 6. Because of this tilting movement, the lugs

  horizontals and transversals 21 rise and as

  Between these lugs 21 and the hinge points 17 is maintained constant, as a result of the provision of rigid tie rods 18, it follows that the piston 14 is moved slightly forward. which causes an additional compression of the energy spring 12. Thus, if

  the skier's fall falls at the same time as a torrent

  In this case, the hardness of the safety fastener 1 with respect to this lateral bias is lightened by the fact that the energy spring 12 has been slightly raised, resulting in a lateral biasing of the jaw wings 7.

  compressed additionally under the effect of the fall back.

  In other words, the intensity of the lateral

  voiding the lateral release of fixation 1 is less

  in the case where the torsion of the skier's leg is

  combined with a fall back, only in case

is a pure twist.

  Additional means may be provided for

  as an elevation of the jaw 7 when it is

  moved laterally under the effect of a lateral

  rale. These means may comprise a transverse ramp

  22 attached to the base 4 below the jaw 7 and presented

  both a curved upper surface concavity facing upwards. On this curved ramp lies a roller 23 which is rotatably mounted about a horizontal and longitudinal axis, in the middle of the lower part of the jaw 7.

  therefore when this jaw 7 moves sideways-

  the roller 23 rises on the curved ramp 22, which

  void an uplift of the jaw 7, with the effect described

  previously on the energy spring 12.

  In the variant embodiment of the invention,

  shown in FIGS. 5 and 6 the energizing mechanism

  comprises a compression spring 12 extending longitudinally

  nally and which is supported, at its rear end, on a vertical and transverse surface 24 secured to the body 5 of the binding. This spring 12 is supported, at its front end, on the front end portion 25a of a force transmission member 25 such as a longitudinal tie rod which is mounted longitudinally sliding. This tie 25 acts, by its posterior end portion 25b, on

  the wings 8 of the jaw 7 of the fixation and it is sol-

  This embodiment of the invention allows the tilting axis 6 of the body 5 to be located at the lower part of the columns 18, while the pivot points Fixed 17 rigid tie rods 19 are located at the top of the columns 18. Moreover the tie rods 19 are inclined from top to bottom and front to back and they are connected, at their rear ends, to the transmission member 25. The connection can be made by means of

  for example, by lugs 26 aligned transversely and

  supported by supports 27 integral with the transmission member

  These pins 26 are engaged in light

  In the engaged position, as shown in FIGS. 5 and 6, the lugs 26 are in contact with the anterior ends of the lights 28. these lugs 26 can slide freely backwards in the slots 28, thereby allowing a rearward displacement of the force transmission tie rod 25 following a lateral biasing of a lateral retaining wing 8.

  Moreover, in this form of execution of the in-

  vention, the upper hinge points 17 and the lower tilt axis 6 of the body 5 are respectively above and below the horizontal plane P passing through the lugs 26 constituting the axis of articulation between the tie rods of link 19 and the force transmission tie 25. In the case of a rear fall the jaw 7 is raised which causes the tilting of the body 5 in the direction of clockwise around the horizontal and transverse axis 6. Due to the relative position

  higher articulation points 17, of the axis of

  lower base 6 and lugs 26, the tilting of the

  body 5 upwards causes, through the intermediary

  rigid linking elements 19, a slight displacement of the

  the transmission of force 25 to the rear. because

  the lugs 26 are in contact with the front ends

  lights 28, and this shift is reflected in turn

  by additional compression of the energy spring.

  This helps to lighten the hardness of the fastening with regard to a lateral bias in these ob aft fall

  the skier is combined with a twist of his leg.

  In the variant embodiment of the invention,

  7 to 9, which is of the piston type 14 pushed backwards, as shown in FIG. front stop illustrated on

2.629354

  8. Figures 1 to 4, the jaw 7 comprises two lateral retaining wings 8 which are articulated on the body 5 around

  respective vertical axes 29. Each retaining wing la-

  8 includes a branch 8a inclined rearwardly and outwardly and at the end of which is mounted a roller 8b bearing against the edge of the sole of the shoe, and it has a front transverse face 8c with which is in contact with a lateral projection 14a of the

  piston 14. Because the piston 14 is pushed back towards the

  by the spring 12, each lateral retention wing 8

  is thus solicited in the direction of the vertical plane

  cal and longitudinal symmetry of the binding, that is to say towards the edge of the sole of the shoe. Furthermore each lateral projection 14a of the piston 14 carries a pin 21 which is engaged in a light 20 of the tie rod.

  associated link 19, as in the case of the execution form.

  1 to 4. As a result, in the case of a rear fall, the piston 14 is pulled a little forward, by the two link rods 19, which contributes to reducing the hardness of the in the case of simultaneous lateral loading, as described with regard to the embodiment shown on the

Figures 1 to 4.

Claims (6)

  1.- Safety binding for ski intended for use   nir, in a triggerable manner, the front of a shoe mounted on the ski, comprising a body mounted on a solid base   of the ski, this body carrying, in its rear part, a   shoe retainer which includes a   a sole plate and two opposing lateral retaining wings, and an energizing mechanism housed in the body for resiliently urging the jaw in the engaged position, this energizing mechanism comprising an energy spring   taking support, at one end. on a transmitting organ   longitudinal force of the force movable longitudinally in the body and coupled to the jaw so as to bias this jaw elastically against the front of the boot, to ensure the retention thereof on the ski, characterized in that the body (5) is pivotally mounted on the base (4, 18), in its front part, around a horizontal and transverse axis (6), and at least one rigid connecting member (19) extends between the transmission member of a force (14,25) and a fixed hinge point (17) on the base (4,18) placed in such a way that the lifting movement of the jaw (7) in the event of the skier falling backwards, causes a displacement of the force transmission member (14,25) in the direction   resulting in an additional compression of the energy spring   (12) of the energizing mechanism.   2.- Ski safety binding according to the claim   1 in which the force transmission member is constituted by a piston mounted longitudinally movable and biased elastically backwards by the energy spring of the energizing mechanism, characterized in that the piston (14) and the anterior end portions of two rigid connecting rods (19) are connected by two coaxial lateral pins (21), extending horizontally and transversely, carried by the piston (14) (or the tie rod (19)) and which are respectively engaged in lights   longitudinal axes (20) formed in the extreme   two link rods (19) (or in the piston 26.29354   (14)), and these two tie rods (19) are articulated, at their front ends, on the base (4), in   lower fixed hinge points (17) located below   under the horizontal and transverse axis (6) of tilting of the body (5), this axis (6) and the fixed hinge points (17) being located respectively above and below the horizontal plane (P) passing through the lateral pins (21) so that the connecting rods (19) are inclined from above down and back in front.   3.- Ski safety binding according to the claim   1 in which the force transmission member is constituted by a longitudinal tie-rod mounted longitudinally sliding and biased forwardly by the energy spring of the energizing mechanism, characterized in that the tie rod (25) and the anterior end portions of two rigid link rods (19) are connected by two   coaxial side nipples (26), extending horizontally and.   transversely, carried by the tie rod (19) (or the force transmission tie rod (25)) and which are respectively engaged in longitudinal slots (20) formed in the anterior end portions of the two connecting rods (19) (or in the force transmission tie rod (19)), and these two tie rods (19) are articulated, at their forward ends, on the base (4), at the upper fixed articulation points (17) located at the above the horizontal and transverse axis (6) of tilting of the body (5), this axis (6) and the fixed hinge points (17) being located respectively below and above the horizontal plane (P) passing through the lateral lugs (21) so that the connecting rods (19) are inclined up and down and from front to back.   4.- Ski safety binding following one   any of the preceding claims characterized in that   the fixed points of articulation (17) and the axis (6) of.   tilting of the body (5) are carried by columns (18) forming part of the base (4).   5.- Safety binding for ski follow one   any of the preceding claims characterized in that   that it comprises means (22,23) causing an elevation   of the jaw (7) when the latter is displaced laterally   under the effect of lateral stress.   6.- Ski safety binding according to the claim   cation 5 characterized in that the means causing   elevation of the jaw (7) include a transverse ramp   versale (22) fixed to the base (4) below the jaw (7) and having a curved upper surface concavity facing upwards and on this curved ramp rests a   roller (23) which is rotatably mounted about a horizontal axis   zontal and longitudinal, in the middle of the lower part of the jaw (7).