JPS62172978A - Shoe sole support jig of ski boots - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention is intended for use on skis, in particular in conjunction with the toe fasteners of ski boots, to suppress the friction of the sole of the ski boot due to the skier's weight. The present invention relates to a shoe sole support device.

Conventional technology As is well known, the toe fasteners (hereinafter referred to as fasteners) of ski boots generally cause the fasteners to move from side to side when an excessive torsional force is applied to the skier's leg in the plane of the ski. It has the ability to overcome the built-in spring resistance and release the ski boot. However, the major problem that exists in this case is that when the skier leans too far forward, the skier's weight
or more load acts perpendicularly to the surface of the ski, resulting in the back of the sole of the ski shoe and the so-called toe plate, a sole support installed near the toe of the ski to support it. During this time, a non-negligible frictional resistance occurs, and this is added to the spring resistance inherent in the binding, so the binding will not release with the initially set torque equivalent to the spring resistance, posing a danger to the skier's legs. This means that it will increase.

In order to avoid this risk, polytetrafluoroethylene (Poly Tetra Fluoro Ethylene), which has a small coefficient of friction against slipping, has conventionally been used as a material for shoe sole supports.
Plastics such as PTFE (hereinafter abbreviated as PTFE) have been used in the form of thin sheets. PTFE
It is true that it is a slippery material compared to other plastics, but it is originally extremely soft and easily damaged, and when sludge that causes damage adheres to it, the friction increases rapidly. . In addition, in order to avoid the problems inherent in shoe sole rests made of PTFE soles, instead of sliding elements, much more frictional Shoe sole supports using low rolling elements are also known. However, since these devices have a type of endless track structure, a relatively large number of rolling elements must be used, which poses problems such as the structure is complex, increases costs, and is prone to failure. Ta. In addition, instead of a track-like structure that requires a large number of rolling elements, a non-track structure that uses the minimum number of rolling elements can be considered, but in that case, the lateral displacement of the tip of the ski boot is generally In order to return the rolling elements that have moved due to this to their original positions on the ski, it is necessary to separately install spring means within the limited housing space of the rolling elements, which can easily cause failures. It came with drawbacks. Therefore, an object of the present invention is to solve these problems all at once.

Means for Solving the Problems In the present invention, the following method is proposed to solve the above problems. That is, in the sole support according to the present invention, instead of a large number of rolling elements, only two rollers are arranged on the base plate approximately in the longitudinal direction of the ski, and the rollers do not change their mutual positions. To prevent this from happening,
The ski is housed in a substantially rectangular opening formed in a retaining plate that holds only the vicinity of the apex of the arc of the cylinder exposed upward in its longitudinal direction, and the retaining plate extends in the longitudinal direction of the ski. It is configured to slide within a predetermined guide track range while being secured against upward disengagement within a guide track provided on the base plate at right angles to the base plate.

Furthermore, in the shoe sole support device according to the present invention, a wooden V-shaped or inverted V-shaped step is provided on the back surface of the retaining plate in the longitudinal direction of the ski, and the step portion includes a right and left side of the toe of the ski boot. A protrusion protruding from the rear end of the connecting member that holds the front end of the spring receiving member that moves back and forth as the fastener's built-in spring expands and contracts with the movement.

are configured to engage in tension or pressure.

EXAMPLES Hereinafter, preferred examples of the shoe sole support according to the present invention will be explained based on the drawings.

In FIG. 1 or 3, two rollers 1.1 for supporting the sole are arranged approximately in the longitudinal direction of the ski on a roller base plate 4 which is placed on the ski board 2 together with the binding body 3. In order to keep the rollers 1.1 always at a constant distance from each other so that their mutual positions do not change, the rollers 1.1 are inserted into a substantially rectangular opening formed in the retaining plate 5. The roller is housed so that only the vicinity of the apex of the arc of the roller is exposed upward along its longitudinal direction. In that case, the roller 1.1 and the substrate 4 are each made of a sufficiently rigid material, for example the former of polyacetal resin and the latter of stainless steel plate, and the difference between the diameter of the roller and the thickness of the retaining plate is made of a relatively soft material. Even when the skier's weight acts through the sole 6 of the ski boot, the roller l into the sole 6
, 1 are selected so that the sole 6 and the holding plate 5 do not come into contact with each other due to the sinking action of the shoes. - The force retaining plate 5 is slidable laterally between the guide rail 4A bent at the rear end of the base plate 4 and the rear end 3A of the binding body, perpendicular to the longitudinal direction of the ski. , these image areas 3 also apply to upward departure.
Secured by A and 4A. Further, on the back surface of the retaining plate 5, there is an engaging recess 5A that receives an engaging protrusion 7A for keeping the retaining plate 5 itself at the center of the ski at all times when the tip of the shoe is stationary on the center line in the longitudinal direction of the ski. It is provided as a substantially V-shaped stepped portion on the back surface of the holding plate. An engagement protrusion 7A provided at the rear end of a connecting member 7 connected within the fastener body 3 contacts the engaging recess 5A on the holding plate 5, and a front end of the connecting member 7 contacts the engaging recess 5A. is connected to and held by a spring bearing shaft 9 that moves back and forth in accordance with the expansion and contraction of a built-in spring 8 inherent in the binding as the ski shoe sole 6 moves from side to side. In this case, preferably, the front end of the connecting member 7 It is formed into a roughly mushroom-shaped cross section, and its both ends are configured to abut correspondingly shaped stepped portions provided on the back surface of the fastener main body 3. In this embodiment, the spring bearing shaft 9 is formed as a shaft perpendicular to the binding body 3 and the surface of the ski, and one end thereof is fixed to the spring bearing shaft 9 at the front part of the binding body 3. The other end of the tension spring 8 is suspended. An engagement recess 5 that comes into contact with a protrusion 7A provided at the rear end of the connecting member 7
A is preferably formed in a substantially V-shape toward the rear of the ski, but is not necessarily limited to a V-shape; Any shape may be used as long as it releases the .

In addition to the embodiments described above, the sole support according to the present invention can also be applied to a fastener that uses a compression spring instead of a tension spring as a built-in spring for the fastener, although not shown here. can. However, in this case, the engagement recess on the retaining plate that comes into contact with the protrusion provided at the rear end of the connecting member is formed in a substantially V-shape toward the front of the ski.

Next, how the sole support according to the invention operates will be explained based on a first embodiment. Figures 1 and 2
In the figure, when the shoe tip holding member 10 rotates outward of the ski through the ski boot sole 6, the shoe tip holding member lO
The lever 10A on the opposite side acts to move the spring bearing shaft 9 backward against the tension of the tension spring 8, so that the connecting member 7 coupled and held to the spring bearing shaft 9 also moves toward the rear of the ski. Therefore, the state of contact between the projection 7A provided on the rear end of the connecting member and the engagement recess 5A on the holding plate 5 is released.

As a result, the restraint of the holding plate 5 to the center of the ski is also released, and the rollers 1, 1 accommodated in the holding plate 5 rotate the sole 6 of the ski boot under the influence of the skier's weight. Transport laterally. In this case, the holding plate 5 runs in a guide track formed such that its parallel front and rear edges are restrained from above by the sole support and the end of the base plate of the binding body. When the ski toe retaining member 10 has completed its outward rotation of the ski, the toe retainer 10 returns the ski boot sole 6 to the center by the tension of the built-in spring 8 inherent in the binding, and returns to the spring receiver. In order to move the connecting member 7 toward the front of the ski via the shaft 9, the protrusion 7A provided on the rear end of the connecting member moves the retaining plate 5 into the engagement recess provided on its back surface. The ski can be returned to the center via 5A. In that case,
The front end of the connecting member 7 is formed into a substantially mushroom shape, and is adapted to make a transition from the state shown in FIG. 2 to the state shown in FIG. ,
The articulating member 7 and therefore the retaining plate 5 linked thereto can be returned exactly to the center line of the ski.

Effects of the Invention As detailed in the above embodiments, the ski shoe sole support according to the present invention uses a rolling friction type using rollers instead of the sliding friction type using a PTFE sheet, which is common in the prior art. Therefore, the friction of the sole due to the skier's weight is extremely small, and any undesirable changes in the performance of the fastener at the toe of the shoe due to this can be minimized.

An example of this effect is shown in FIG. 5 as a force versus lateral displacement of the shoe tip. In that case, the upper curve group represents the process of the tip of the shoe moving outward from the center of the ski, that is, towards release, and the lower curve group represents the process of returning to the center of the ski, and the solid line represents the process of the tip moving outward from the center of the ski, i.e., toward release. In the case of no shoe sole friction, the one-dot chain line means the case when a PTFE type shoe sole support is used under the action of the entire body weight, and the two-dot chain line means the case when a roller type shoe sole support is used under the same weight action. From this, it is possible to read how the performance of the fastener, which has the inherent performance shown by the solid line, changes depending on the friction of the shoe sole.
It is clear that when the roller type shoe sole support according to the present invention is used, the sole friction due to body weight is 1/2 to 1/3 that of the conventional PTFE type shoe sole support. In addition, in the shoe sole support device according to the present invention, instead of the conventionally known endless track type with built-in multiple rolling elements, at least two rollers are accommodated in the holding plate, and the rollers are placed at the center of the ski on the holding plate. By utilizing the built-in spring unique to the fastener, the holding or returning action can be performed extremely strongly and reliably.

[Brief explanation of drawings]

Fig. 1 is a cutaway plan view of the main parts of the shoe sole support according to the present invention when it is in a resting position in a state where it is assembled with a fastener at the tip of the shoe, and Fig. 2 is a plan view of the main parts when it is also in a moving position. 3 is a cross-sectional view taken along line A-A in FIG. 1 in the direction of arrows, and FIG. 4 is a cross-sectional view taken along line BB in FIG. The vertical cross-sectional view shown in FIG. 5 shows an example of the performance change of the fastener depending on the presence or absence of weight bearing action when the PTFE shoe sole support and the shoe sole support according to the present invention are used in combination with a specific shoe toe fastener. This is measurement data. L・War・Roller, 2...Ski board, 3 fist φ・Fastening body, 3A...Rear end of the fastening body, 4... Board, 4A@
・・Guide rail (rear end of board), 5φ pipe/holding plate, 5A・・
・Engagement recess, 6...Ski shoe sole, 7-@・Connecting member, 7A...Protrusion, 8・O・Spring, 9...Spring bearing shaft,
10-・Kisten shoe tip holding member, IOA...Lever on the opposite side.

Claims (1)

[Scope of Claims] 1. A device for reducing sole friction that occurs when the sole of a ski boot moves when the skier's weight acts on the surface of the ski, supporting the skier's weight through the sole. 2.
It includes a main roller, a retaining plate for keeping the distance between the rollers constant at all times, and a guide rail for allowing the retaining plate to move in the lateral direction of the ski and restraining it from moving upward. and a return means for always holding the holding plate at the center of the ski when the ski shoe sole is stationary and always returning it to the center of the ski when the ski shoe sole is moving. Sole support for ski shoes. 2. The return means includes a built-in spring specific to the fastener, an engagement recess provided on the back surface of the retaining plate, a spring receiving member for the built-in spring, and a space between the spring receiving member and the engagement recess. The sole support device for a ski boot according to claim 1, characterized in that the device comprises a connecting member that connects the ski boot soles. 3. The front end portion of the connecting member is formed to have a substantially mushroom-shaped cross section, and a step portion of a corresponding shape is also formed on the back surface of the fastener body. The sole support for ski boots according to item 2. 4. The ski according to any one of claims 1, 2, and 3, wherein the rear end portion of the continuous member has an engagement protrusion that comes into contact with the engagement recess. Shoe sole support.