JPH03162877A - Ski provided with retaining plate for holding binding - Google Patents

Abstract

PURPOSE: To improve the guiding characteristic and safety by providing a ski with a holding plate, which is fitted to a ski main body through an elastomer intermediate layer, over the full width of a ski core and over the full length of a binding part, and setting the thickness of the holding plate and the elastomer layer small in comparison with the ski core. CONSTITUTION: A hollow core 1, which is surrounded by a torsion box 2 made of an epoxy resin layer, is formed, and a thin aluminum plate 3 for reinforcing an upper wall of the torsion box 2 is fitted under this upper wall of the torsion box 2, and a top surface and a bottom surface of an aluminum plate 10 fitted under the aluminum plate 3 are coated with rubber layers 11, 12. The rubber layers 11, 12 are spread over the full length of the ski, and they are connected to each other by the material lock method. The upper rubber layer 12 is spread so as to exceed the length of the aluminum plate 10 a little in the fore and aft direction, and the lower rubber layer 11 is spread more in the fore and aft direction thereof. As a result, a front end and a rear end of the aluminum plate 10 can be easily moved in relation to a ski by the deflection of the ski.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention consists of a core constructed of a light material, such as poplar wood, pine wood or foamed plastic, and a core made of a light material, such as, for example, a fiber-reinforced epoxy resin and/or a lightweight material. consisting of a high strength material of metal and connected to the core in a material-locking manner, with upper and lower layers preferably integrally forming a torsion box surrounding the core and parallel to the upper surface of the ski; Extends approximately into the pining part, in order to receive the screws by which the pinning part, which holds the heel and toe of the ski boot, can be connected to the ski.
With respect to skis in which a retaining plate is arranged, in which holes are formed, the arranged retaining plate is connected both to said retaining plate and to the ski body in a material locking manner (i.e., fixedly connected, e.g. by adhesive). ) is attached to the interior of the ski body via an elastomeric interlayer, such as rubber or silicone rubber, connected by

BACKGROUND OF THE INVENTION In conventional skis, where two pinpings usually secure both the heel and toe of the boot, e.g. the screws that hold the pinpings, especially in the case of alpine skis or downhill race skis. has to be fixed and fastened to the ski body, and therefore there is a serious problem that the screw itself must first be fixed to the ski body, mainly in the upper layer or thickness part, which is of high strength. . The corresponding pinning part and the ski boot are thereby connected to the ski to form a rigid unit. This deprives the central region of the ski of its elastic properties, making the ski more or less stiff than needed, depending on the situation.

European Patent Application No. 0. 354. With the structure according to No. 379, these drawbacks are overcome. In this construction, the fixing screws for the two pinning parts are each screwed into two thin sheet metal pieces, each fixed in an elastomer block extending into a groove in the ski core.

(Problems to be Solved by the Invention) This structure also has technical problems. For example, the grooves have a large cross section, which impairs the strength of the ski body. With this construction, the ski flexes well due to the large elastomer block, regardless of the ski boot and pinning.

However, since the retaining plate is movable not only in the longitudinal direction of the ski as required, but also in the lateral direction of the ski, the connection of the boot to the ski can be moved not only in the longitudinal direction of the ski, but also in the lateral direction of the ski. It can also be deflected. As a result, the skis follow the skier's direction changes only with a certain delay. This not only reduces the guiding ability of the skier, but also puts the skier in real danger.

This construction also has the significant disadvantage that the area to which the fixing screws are attached is very small and, as a result, the ski is limited to the use of certain types of pinning.

The present invention solves these conventional problems, and its purpose is to provide skis that have excellent guiding performance and safety, and can be used for all types of pinning. .

(Means for Solving the Five Problems) In order to achieve the above object, the present invention provides a core made of a light metal and a pin, which is connected to the core in a material locking manner and has upper and lower layers made of high strength material. a retaining plate extending parallel to the upper surface of the ski only substantially below the ding and having a hole formed therein for retaining a screw by which a pinning member retaining the heel and toe of the ski boot may be connected to the ski; The present invention proposes a ski in which an arranged retaining plate is attached to the ski body via an elastomer intermediate layer which is connected in a material locking manner to both the retaining plate and the ski body.

The improvement is that the disposed retaining plate is a thin plate, and the retaining plate and the elastomer intermediate layer are
It extends laterally over almost the entire width of the ski core, and longitudinally over the entire length of the pin, between the retaining plate and the upper high-strength layer and the retaining plate, and between the core and the retaining plate. The elastomer layer forms a thin layer compared to the height of the ski core.

This plate is preferably formed from an aluminum plate. A thickness of about III1 has proven suitable for this. However, the plate can also be constructed from a high-quality fibre-reinforced plastic material, or it can be a composite plate of at least one thin metal layer and possibly fibre-reinforced plastic.

(Function) The retaining plate is attached to both the top and bottom of the ski body.
That is, due to the fact that the two main surfaces of the ski are connected in a material-locking manner via a thin elastomer layer, the ski's The displacements necessary for deflection or elastic expansion and contraction occur with deformation of the elastomer layer that is largely undisturbed by the pinding and clamping forces of the boot. Due to the extensive connection between the retaining plate and the ski body over the entire length of the pinding, complete lateral guidance of the ski by the pinding is guaranteed. The elastomer layer is generally a rubber layer. The elastomer layer preferably has approximately 0
．． It has a thickness of 5 to 1 cm. They should be highly elastic, like the rubber of a car tread, for example.

In order to specifically guide the plate in the longitudinal direction of the ski body, the sides of the plate can be supported directly on the side walls of a fibre-reinforced plastic torsion box that surrounds a wooden ski core, for example. However, the plate is laterally supported via thin elastomer strips on the torsion box or other fixed parts of the corresponding ski body. These elastomer strips, which are preferably connected to the upper and lower elastomer layers in a material-locking manner, allow for longitudinal displacement between the ski body and the plate, but not for lateral displacement between the ski body and the plate. Disturb the direction deviation.

The plate extends in the longitudinal direction of the ski only below the pinning area, i.e. only to the extent necessary to retain the screw even in the case of the longest pinning, and beyond the possible screw positions for the pinning. Due to the fact that said plate does not have any disturbing influence on the remaining parts of the ski.

Generally, the length of the plate will be approximately 60 cm relative to the normal length of the ski.

The present invention allows the retaining plate, together with the elastomer layer between the core and the upper high strength layer, to weaken the core due to the thinness of the retaining plate and the elastomer layer, which together can in fact not be much thicker than about 2a+m. Not at all?
Alternatively, it is possible to provide it with almost no increase, or with the height of the pinned portion not increasing at all or hardly increasing.

Skis that are provided in the described manner with a plate for holding the screws that fix the pindings can easily be fitted with pindings. For this purpose, when drilling holes for holding fixing screws,
This hole can be conically enlarged wider at the top so that the top of the plate is freely exposed. When fastened by screws, the pinning parts are well supported directly or indirectly on the plate.

Thus, in the ski with a screwed pinning part according to the invention, the pinding part is screwed to the plate using a spacer element extending through a cutout in the upper layer of high strength material. Because the spacer member is movable in the cutout in the upper high-strength layer and with respect to the upper high-strength layer, ski boots with pins and plates are designed so that the deflection of the ski is controlled by the plates, the ski boot, and the spacer member. A relatively stiff pod can be formed which is flexibly guided within the ski via an elastomeric layer surrounding the plate so as to be less sensitive to the hardness of the pining.

The pinning part therefore does not have to be fastened to the upper high-strength layer between the pinning part and the plate. They should therefore be supported, as it were, on plates on low cylinders that protrude with gaps through the high-strength layer. The pinning part may typically be a flat metal plate. The metal plate may support downwardly an embossed cup with a through hole in the center for a screw, so as to "support a cylinder." However, in a preferred construction, the spacer element is formed in the shape of a flat disk by a thickness adjustment plate surrounding the screw and having a thickness sufficient for the small gap between the surface of the ski and the pinning part. The spacer element may, for example, keep the pinning part at a distance of several tens of millimeters from the ski surface.

The front and rear abutments of the plate should run as far as possible from the flexible parts of the ski body, ie the corresponding wooden or foamed plastic core, for example.

Also, a small cavity can be provided here. For example, the cavities are left open during ski manufacture, where, prior to the production of the ski, small cords of foam material, with a cross-section of, for example, 1 mm square, are fitted into the front and rear end faces of the plate or sub-plate. . Preferably, however, the front and rear abutments of the plate and subplate are supported on the ski body via a volume-variable elastomer part.

This is also preferred, since the front and rear edges of the plate, respectively, are not beveled and the elastomeric layer covering the top and bottom of the plate can be easily assembled here. This creates a small cavity here. These cavities do not accommodate changes in the longitudinal plates and are sufficient to handle the slight deviations that occur when the ski flexes.

(Example) Hereinafter, embodiments of an alpine ski constructed according to the present invention will be described based on the drawings.

As shown in FIGS. 1 to 3, the ski of the invention comprises a hollow core 1 surrounded in the usual manner by a toshicon box 2 consisting of a fiber-reinforced epoxy resin layer.
has. The upper and lower walls of the torsion box 2 form upper and lower layers of high strength material, respectively. Beneath the upper wall of the torsion box 2 extends a thin aluminum plate 3 reinforcing this wall, which is not shown in FIG. 2 for reasons of brevity. The ski is surrounded on the outside by a cover layer 4. The ski has a running sole 5 and a steel edge 6 on the bottom. On the upper side of the ski body, the base plate 8 of the self-heeling mechanism and the front jaw of the ski pining are shown only schematically by screws 7. The other parts of the Sugyuichi pin are not shown.

The structure of the ski is known within the scope of the description of the exemplary embodiments.

According to the present invention, an aluminum plate 10 extends below the aluminum plate 3, which is a lightweight metal layer extending over the upper surface of the tossin box 2, and the aluminum plate IO is formed as shown in FIGS. The top and bottom surfaces are covered with rubber layers I1 and L2. The rubber layer l1 and the rubber layer 2 extend over the entire width of the ski, and these are provided with an aluminum plate 3 and an aluminum brake} 10, or a wooden core l and an aluminum plate 1 (l) with a material locking method, for example by a vulcanization process or with hardened epoxy. The two rubber layers 11 and 12 are connected by adhesion using rubber resin.Although only half of the cross section of the rubber layer is shown in FIG. , spreads over the entire width of the cow.As is clear from Figure 2,
The upper rubber layer 12 extends somewhat beyond the length of the aluminum plate 10 forwardly and backwardly. The lower rubber layer 11 further expands slightly forward and backward, and as shown in FIG.
1 and l2 and extends upwards to the surface of core l within a notch in wooden ski core 1 that accommodates aluminum plate 10. The aforementioned cutouts can be made in a simple manner by milling. As is most apparent from FIG. 2, the invention allows very shallow milling to be performed with little effect on the deflection characteristics of the ski. However, the ski can also be made without milling.

The plate arrangement with the elastomeric layer is then between the unweakened core 1 and the top layer 2. In this case, the front and rear edges of the sheet metal plate IO, and possibly also the elastomer layer, are cut diagonally so that they gradually slope towards the edges and have a bulge of approximately 2IllI1 in the center of the ski. The two rubber layers 11 and 12 extend beyond the unsharp front and rear edges of the aluminum plate IO, as shown in FIG.
and l2 seal a small space between both rubber layers 11 and l2 and the aluminum plate that is not completely filled with adhesive when the ski is pressed. As a result, the front and rear ends of the aluminum plate 10 can easily move relative to the ski if required by the deflection of the ski.

The side surface of the aluminum plate 10 is supported by the side surface of the tossin box 4, as is most clearly seen in FIG. Also, as is clear from Figure 3, the aluminum plate +
The sides of -10 are not sharp.

However, the aluminum brakes 10 can extend up to the side walls of the torsion box 2 or, if no torsion box 2 is present, to the inside surface of the ski body.

The skis are, of course, in the shape described so far.
It is manufactured without the plate 8 and screws 7 representing the pinned parts. Typically, the retailer installs the pinning. For this purpose, four screw holes are formed in each of the two plates 8 in the example embodiment through the aluminum plate IO.

While drilling the screw holes, the drill drills the through hole for the screw in the metal plate lO and at the same time ends the enlarged hole l6 passing through the upper strength layer 2 and the lower rubber layer l2 except for the top surface of the aluminum plate 10. Also used for boring and counter boring.

In order to fix the pinning, the pinning part 8 is then attached to the aluminum plate lO by means of a thickness adjusting plate l7 and screws 7, which are shown enlarged in FIG.
Fixed with screws. The thickness adjustment plate I7 is made high so as to support the pinning plate 8 at a small distance from the surface of the upper cover layer 4. As best shown in FIG.
The pinning is connected directly through the high-strength layer of the torsion box 2 without distributing force to the upper high-strength layer of the torsion box 2. In the longitudinal direction, the aluminum plate IO is guided and fixed to the side wall of the torsion box 2. In this case, aluminum plate}10
The longitudinal end surface of the torsion box 2 is coated with a release agent before pressurizing the ski body, so the torsion box 2 is essentially coated with a release agent.
is not connected to. As is clear from Figure 2, for example,
When the ski flexes downwards with the pinning, the upper surface of the torsion box 4 is contracted without holding the pinding together with the aluminum plate IO which strongly resists such a contraction. The gap between the thickness TA trimming plate 17 and the holes in the high strength layer 2 is sufficient for this purpose. The resulting length difference between the aluminum plate 10 and the torsion box 2 is eliminated by a corresponding thrust deformation of the upper rubber layer l2. The same applies to the relative change in length between the ski core I and the aluminum brake 1G.

(Effects of the Invention) In the ski of the present invention, the pinning can be fixed in this manner, so that neither the pinding nor the ski boot exerts much tightening effect on the pinning portion of the ski. Pindings can be connected to skis relatively easily. Additionally, and importantly, the connection of the pining parts to the ski is such that the possibility of deflection of the connection exists only in the vertical direction of the ski, not in the horizontal direction. As a result, it has optimal guiding properties.

Finally, the entire pinding section is adapted to hold the pinning retaining screw.

４　　　　　　　U FIG. 1 is a plan view of the steering wheel of the present invention.

FIG. 2 is an enlarged sectional view taken along line II-II in FIG. 1.

FIG. 3 is an enlarged sectional view taken along the line [-III] of FIG. 2.

! ...Core, 2...Toshitambo Nokusu, 3...
・Aluminum plate, 4...cover layer, 7...
Screw, 10... Aluminum plate, II, 12.
...Rubber layer.

that's all

Claims (1)

[Scope of Claims] 1. A ski boot comprising a core made of a light metal, comprising upper and lower layers of high-strength material connected to the core in a material-locking manner, and extending parallel to the upper surface of the ski only approximately below the pinding; A ski in which a retaining plate is disposed in which a hole is formed for retaining a screw by which a heel and toe retaining pinning member can be connected to the ski, the disposed retaining plate comprising: attached to the ski body via an elastomeric intermediate layer that is connected in a material-locking manner to both the retaining plate and the ski body, the retaining plate being a thin plate; It extends almost the entire width of the ski core in the direction, and
In the longitudinal direction of the ski, it extends over the entire length of the pining part, and the retaining plate and the elastomer layers between the upper high-strength layer and the retaining plate, and between the core and the retaining plate, have a height relative to the height of the ski core. A ski on which a retaining plate for retaining pins is arranged, characterized in that it forms a thin layer. 2. The upper and lower high-strength layers are connected to high-strength side layers to form a rigid hollow torsion box surrounding the core, and the retaining plate is laterally supported by the side layers of the torsion box. The ski according to claim 1. 3. The ski of claim 1, wherein the retaining plate extends between the ski core and the upper high strength layer. 4. The ski according to claim 1, wherein the number of said holding plates is one. 5. The ski of claim 1, wherein the thickness of the retaining plate and the two elastomeric intermediate layers are each approximately 1 mm. 6. The pinning part is retained by a screw extending through a spacer element carried by said retaining plate, said spacer element retaining said pinding part at a small distance from the surface of the ski. Ski according to claim 1, characterized in that the cutout provided in the upper high-strength layer of the ski for the spacer element surrounds the spacer element with a gap.