FI81752B - Sledge - Google Patents

Description

1 81752

Sled 5 Sled

The invention relates in particular to a sled for downhill skiing, which in addition to the feet also includes a track element, by means of which the speed of the sled can be controlled as desired in the descent phase.

Tobogganing is a traditional winter pastime and sport in the northern hemisphere as well as in the lower latitudes of the 15 mountain areas where winter sports are practiced. Sledges are generally based on one or more pairs of legs in which a pair may be arranged to pivot as desired. The turning is controlled either by the steering wheel or by turning or pulling 20 or more control ropes utilizing various Vivusts, etc. The guide part of the carriage is usually articulated to pivot relative to the rest of the frame part. The rapid development of the plastics industry in the sixties brought a so-called sled to the sledge as a competitor to the sled, which usually has no control equipment. The stick is steered using either the hands or 25 feet - the hand or foot on its side is pressed to the ground in which direction to turn.

Tobogganing and tobogganing are typical downhill equipment that require a relatively hard bottom and a steep hill. 30 to work. On the plain, they are usually only used by parents when pulling their children out. The stick is also used attached to the handlebars. In this case, the guide is usually either a reindeer or a dog.

35 A so-called snowmobile is also known, in which the front of the sled has guide skis which can be turned by special handlebars or handles, and the middle and rear part of which are formed by a fixed track structure. Snowmobiles are also known, in which a track is also used for steering.

‘40 Snowmobiles are generally powered by an internal combustion engine of several tens of horsepower. These 2 81752 snowmobiles are intended for use on winter terrain. The prices of snowmobiles correspond to the prices of motorcycles and there is talk of prices in the order of ten thousand. The snowmobile is not intended to be sliding and is practically incapable of moving even downhill without mechanical power.

Also known are bicycle-like sledding devices with sledges in place of the wheels. Also known are 10 wind-powered sailboats for land use, which are popular means of ice transport in winter.

The explosive growth and popularity of the Slalom downhill and other ski-run downhill skiing after the mid-last 15 decades has brought about a significant change in winter sports entertainment. Cross-country skiing and natural downhill skiing increasingly focus from winter to winter on bare slopes gutted by trees, which are often still leveled to better suit the purpose. These slopes are quite steep and the ski descent takes place on a zig-zag track down the slope. Due to their steepness, these slopes are very unsuitable for sledding. In many cases, sledding is even prohibited because sleds cannot be controlled on the slopes. The mere possibility of controlling the sleds without the possibility of adjusting the speed of the sled does not improve control. We also want to avoid collisions between ski skiers and sledders.

There are a great lack of leisure facilities in winter sports centers, which are generally based on one or more ski slopes, which are suitable for family and / or party members who do not go downhill skiing.

Increased leisure time and the proliferation of winter holidays have also 35 increased the utilization of so-called summer cottages during the winter. In this case, one of the problems is access to the cottage. Often cottage roads are not plowed in winter. A snowmobile is an expensive solution to this driving problem and therefore only available to a few 3 81752. In addition, it is impossible to transport such a sled by car.

There are also travel problems associated with winter ice fishing, for which no functional and affordable solution suitable for every man's economy has been found so far.

The sled according to the invention provides a decisive improvement in the above-mentioned drawbacks. To achieve this, the sled according to the invention is mainly characterized by what is set forth in the characterizing part of claim 1.

The invention makes it possible to advantageously manufacture sleds suitable for downhill skiing and controlled in terms of cost. These sleds are suitable for downhill skiing for both children and adults. The carriage 15 can simply be motorized and moved on a level ground and, if necessary, uphill. The engine's power requirements are low and the transmission is simple, as the sled is not designed for fast off-road driving. In addition, the sled can be easily transported by car. The sled has a modular structure, so its acquisition can also be carried out in several stages, thus reducing the liquidity effect of acquisition costs.

In the following, the invention will be described in detail with reference to the figures of the accompanying drawing.

Figure 1 shows a side view of a sled according to the invention. Figure 2 shows the same as Figure 1 but seen from above.

Figure 3 shows a section of the locking of the track element 30 to the carriage frame.

Figure 4 is a sectional view of the brake mechanism associated with the carriage.

Figure 5 is a sectional view of a transmission mechanism associated with the sled.

35 Figure 6 shows a schematic diagram of the carriage controls.

In Fig. 1, which shows a side view of a carriage (1) according to the invention, it consists of a carriage body (2), a track element (3), a guide foot (4) and a machine space (5) and a back support (6).

The carriage body (2) is preferably made of, for example, reinforced plastic or other artificial material by lamination or compression. The carriage body (2) comprises a seat part (7) with skis (8) on each side, a bow (9) extending from the seat part (7), to which the pivot is secured by a guide (4) via a pivot shaft structure (10) known per se. The side of the ski (8) has a handle (14) from which the occupant can hold 10 during the descent. The handle (14) is known to be fitted with carriage speed control and motor controls, as will be explained below in connection with Figure 6. The cross section of the carriage frame (2) can be seen in section figures 3-5. The seat part (7) is suitably raised and shaped e.g. the track element (3) advantageously to enable it to be connected and to increase seating comfort. The steering wheel (4) consists of a shaft (11) with guide skis (12) at the ends as shown in Figure 1-2. The guide skis (12) are known to be made of, for example, an artificial material by compression into molds and at the same time grooves (13) are formed in them, which improve grip and directional stability. The shaft (11) can be of artificial construction or, for example, of aluminum, to which the guide skis (12) are known to be attached. The guide skis (12) are shaped in such a way that a person sitting on the sled (1) can place his feet inside them. With the handlebar (4), the steering takes place in such a way that the person sitting on the floor (1) with his feet is known to turn the handlebar (4) in the desired turning direction. The position and dimensions of the parts (11), (12) of the handlebars (4) as well as the dimensions and shape of the parts (7), (8), (9) of the carriage body (2) are chosen so that the person sitting on the carriage (1) can 6) resting on his feet to effortlessly steer the sled-30 kaa (l) in the desired direction.

The back support (6) consists of a tubular body (15) bent into a shape and a support plate (16) connected to it, which corresponds to the back of the occupant. The backrest (6) has means known per se for fastening the machine space (5) to the carriage (1). These aids may be e.g. screw / wing nut assemblies; these are not shown in the figure. The lower ends of the tubes of the tubular body (15) are inserted into sleeves (17) fixed to the carriage body (2). This sleeve connection is known to be lockable. The carriage (1) according to the invention can be pushed by holding the upper end of the tubular body (15) 81752, in particular when the carriage (1) is not provided with a track element (3). The track element (3) consists of parts known per se: the mat (18), the guide rollers (19), the beam (20), and the support rollers, which are not shown in the figure. The guide rollers (19) as well as the carrier rollers are the required number and are mounted on the frame structure of the track element (3) by a prior art. Through the joints of the beams (20) on both sides of the track element (3) and the guide rollers (19) as well as the axles of the support rollers, the structure remains stacked. The track element (3) is an independent functional part of the carriage (1) according to the invention, which can be pushed from behind the carriage (1) under and into the carriage (2) by placing beams (20) in the groove of guides (21) attached to the sides (22) of the carriage (2) according to Figures 3-5.

When the track element (3) has been pushed in a sufficient distance, a pin (24) loaded with a spring (23) presses into the hole (25) in the beam (20), locking the track element (3) in position. Before mounting the track element (3) on the carriage (1), the pins (24) are pulled out so that the beam (20) can be pushed past the pin position in the groove of the guide (21). Figure 3 shows the principle of locking: support profiles (26) are attached to the sides (7), which correspond to one end of the spring (23), the other end of the spring (23) corresponds to a flange welded to the pin (24), the draw end (25) of the pin (24) by gripping, the pin (24) can be pulled out so that it is possible to push the 25 track elements (3) into position, the spring (23) ensures locking when the pin (24) is in the hole (25). The dimensions of the track element (3) are chosen so that the lower surface of the mat (18) is preferably lower than the lower surfaces of the skis (8). On ski slopes where the snow surface is relatively hard, said surface difference may be smaller. When driving on snow-covered ice and in a closed hut, the lower surface of the mat (18) can be substantially lower than the level of the skis (8) to allow the best grip. The detachability of the track element (3) from the rest of the structure of the carriage (1) is an essential feature of the .35 all-man carriage according to the invention, with which the handling weights of the parts are made reasonable for loading the carriage into a car, e.g. In addition, the detachable and quick-locking track element (3) makes it possible to obtain the carriage (1) in cost-effective parts. For example, the equipment level of a sled acquired for a child 6 81752 can be expediently increased with age.

The machine space (5) comprises a small internal combustion engine (29) attached to a support frame not shown in the figures but known per se, which, if desired, rotates the mat (18) by means of a V-belt (30). The machine space (5) also includes a housing (28) which acts as a protective and e.g. artificial material. The housing (28) prevents immediate contact with the machine compartment (5), which contains the motor (29), the transmission and the braking mechanisms.

10

The sides (22) have recesses (31) at the very rear, as shown in Figures 1,4 and 5, into which the shaft ends (32) of the rear guide rollers (19) of the track element (3) protrude when the track element (3) is inserted. The guide (21) 15 attached to the side (22) does not extend over the recesses (31). Figure 4 shows a braking mechanism that operates. The shaft ends (32) are supported by a bearing (33) on the beam (20). A brake drum (34) with a brake belt (35) is known to be attached to the end of the shaft end (32). When the belt (35) is tightened, a braking force 20 is transmitted to the shaft end (32) and through it to the track element (3) due to friction. Since the surface of the mat (18) is substantially large, an effective speed-reducing frictional force is generated on the carriage (1). The braking mechanism described above, the controls of which are explained below, can effectively control the speed of the carriage (1) on each of the slopes of the roller-25. It is also known that the choice of the texture of the mat (18) can have an effect on the braking force.

Figure 5 shows a transmission mechanism based on a pulley (36) and a V-belt (30) known per se. The Hih-30 hub wheel (36) is known to be attached to the shaft end (32) on the opposite side of the brake drum (34) according to Fig. 5. The V-belt (30) is attached at its other extreme position to a second pulley known to be connected to the internal combustion engine (29), shown in Figure 1. When the internal combustion engine (29) is running but the V-belt belt (30) is untensioned, no rotational force is transmitted to the pulley (36) or through the track element (3). When running, the speed of the internal combustion engine (29) is not regulated during travel, but the engine is set to run at the preferred constant speed. If desired, remote control devices known per se can be used for the control, by means of which the carburettor can be controlled during travel. However, this is not seen as necessary. A cheaper solution is achieved by using a constant speed. Even then, of course, the speed 5 can be influenced by stopping the carriage (1) as is known, rising out, opening the engine compartment (5) and adjusting the speed to the desired speed from the carburetor, returning to sitting and engaging traction.

Figure 6 shows a schematic diagram of the braking mechanism. The brake belt (35) on top of the brake drum (34) is at its other extreme position around a roller (37), which roller (37) is known to be attached to the carriage body (2) by the tension spring (38). The roller (37) is further connected by known methods via a lever (39) to a pusher (40) which has the basic structure according to Fig. 6 and is axially known per se via a shaft (41) in connection with a handle (14). On the carriage (1), the counter rests on the handles (14) with his hands, in which case the presser (40) is in the immediate vicinity of the fingers. Squeezing the inner end of the handle (14) of the pusher (40) parallel to the handle causes the roller (37) to retract further from the brake drum (34) and the brake belt (35) to tighten, which further causes a braking force on the track element (3). By easing the compression in the plunger (40), the tension spring (38) pulls the roller (37) back.

; 25 In this case, the brake belt (35) loosens accordingly, reducing the braking force and, in extreme cases, the force is completely eliminated.

On the opposite side of the brake mechanism of the carriage (1), corresponding principle mechanisms are mounted on the handle (14), which control the tension of the V-belt (30) and thereby the force transmitted to the track element (3). However, unlike the brake mechanism, this mechanism is implemented in such a way that when the pusher (40) is pressed tightly against the handle (14), the V-belt (30) is tightened. When the sledge releases his grip. . only (14) and thus also from the pusher (40) the V35 belt (30) loosens and the carriage (1) stops. The operation described is an essential safety factor. In the described transmission case, a tensioning pulley corresponding to the roller (37) is connected to the carriage (2) between the pulley and the pulley (36) connected to the internal combustion engine (29) by means of a tension spring.

8 81 752

The braking mechanism of the carriage (1) can also be implemented by other known aids and mechanisms, e.g. with devices corresponding to the bicycle jar-rusystem. All of these affect the movement of the track element (3).

5 If the carriage (l) is equipped with an internal combustion engine (29), it will not be used for normal downhill descent and the engine will be stopped. In this case, it is often practical to equip the machine space with coupling devices known per se which keep the V-belt (30) loose. In cases where the sled is not equipped with 10 motors at all, this is not necessary.

The sled frame (2) can also be implemented in many other ways, always according to the respective application. For anglers, for example, more covered and larger-than-15 frame solutions can be thought of. Cabiners may require more transportation space from the hull, in which case it must be implemented more extensively.

The control mechanisms of the sled according to the invention can also be implemented in many other known ways, which e.g. can be based on steering wheel, etc. and whose appearance gives the sled more momentum than shown above. Appearance is an important commercial aspect, especially for ski sleds.

The sled according to the invention can also be implemented in such a way that two track elements are installed in parallel, wider than the frame described in detail above. In this case, the carriage can be controlled by braking the track elements as described above; braking the right mat turns the sled oi-30 to the kea, etc. In this case, the steering wheel is unnecessary.

Otherwise, it should be noted that the invention has been described above with reference to only one preferred embodiment thereof. However, this is in no way intended to limit the invention to this example only, but many modifications are possible within the scope of the inventive idea defined by the following patent applications.

Il

Claims (2)

1. Sledge for back baking in s.k. slalom trays and also for other uses, in which sledge (1) a body part (2) consists of an elevated seat or item support part (7) optionally provided with a backrest (6), sliding surfaces (8) on both sides thereof, and at a front member (9) pivotally arranged control means (11), (12), and between said sliding surfaces (8) said sliding surfaces (8) have been mounted one or more with a brake device (34), (35) and / or a transmission clutch (36) provided caterpillar band elements (3) characterized in that the caterpillar band elements (3) are rapidly releasable at the quay (1). 2. A sledge as claimed in claim 1, characterized in that the quick-flowing is carried out by means of self-loading pins (24) or the like, which penetrate in the correct position to the body of the crawler element (3) and abut on the sledge (1), of which pins are present. one or more pieces at least on one side of the sledge.