WO2003093087A1

WO2003093087A1 - Bob

Info

Publication number: WO2003093087A1
Application number: PCT/AT2003/000128
Authority: WO
Inventors: Susanne KÖFLER
Original assignee: Koefler Susanne
Priority date: 2002-05-06
Filing date: 2003-05-02
Publication date: 2003-11-13
Also published as: WO2003093087A8; AU2003232899A8; AU2003232899A1

Abstract

The invention relates to a bob, which can be used as sports equipment for travelling for example on snow or water. Said bob comprises an inflatable, double-walled shell consisting of an inflatable inner skin (core) and an outer skin stretched over the latter. The bob is characterised in that a moulded base part (4), the outer skin (1) and the inflatable inner skin (2) consist of separate parts or parts that are easy to separate, whereby the moulded base part (4) and/or the outer skin (1) can be removed and replaced. According to the invention, the moulded base part (4) that is provided with couplings (21, 22) is subdivided into arcuate diametrically opposed casing segments (5) and is configured with runners (8) for use on snow and with chambers (9) that curve inwards for use on water courses. The pneumatic chamber system (10) consisting of a tube (11) and a support cushion (12) can be filled with tyre air (13). The shell (3) is manufactured in such a way that it comprises a bucket seat with a backrest (14) and a moulded projection (15) situated between the legs of the person using the bob. The bob is designed in such a way that said projection is equipped with handles (16, 17), a winding mechanism (19) for the drag line (20) and optional lever-operated traction brakes (18).

Description

BOB

The invention relates to a bob that serves as a sports device for moving around, for example on snow or water. Such an inflatable sled, with a double-walled and inflatable envelope, which consists of an inflatable inner skin (soul) and an outer skin pulled over this, which is provided with skids for using the bobsled on snow on the tread to improve the directional stability, is, for example known from DE 81 04 014 U1.

According to the invention it is provided that a molded base part, the outer skin and the inflatable, pneumatic chamber system, consist of separate or easily detachable parts, the molded base part or base shell including the outer skin for the respective use of the bob, eg. B. on snow or water, interchangeable and removable. The advantage of this invention lies in the fact that an abrasion-resistant bottom shell with the soft outer skin as a seat, for example made of nylon with a PVC coating connected as a shaping sleeve, is enveloped around the decoupled pneumatic chamber system. With this invention it is possible to combine a plastic with high elasticity and extensibility for the inflatable inner skin with the durability and the UV resistance of the cover. You can glide over bumps with resilient seesaws due to the inflated, elastic inner skin and the vibrating outer skin shock and with the sliding properties and the strength of the molded floor part achieve a shape stability and speed appropriate to the requirements. Furthermore, this design has the advantage that a single component (outer skin and / or molded base part) can be exchanged as required for moving on snow, water or after any damage, which brings significant cost savings. It is preferably provided that the bottom molded part or the bottom shell releasably connected to the jacket consists of a plurality of jacket segments arranged next to one another in the transverse direction, for example of three sections with cross-sectionally curved arcuate jacket segments, the curvature of the two outer sections looking down towards the floor or the roadway are directed and forms a contact surface with the floor or the tread in the lowest region and the curvature of the central section points upwards. The advantage of this design is the better displacement of snow or water and increases the speed of travel due to the smaller friction surface.

An advantageous embodiment of the invention consists in that the floor molding or base shell is provided with skids for use on snow or ice on the tread in order to improve the directional stability. They run parallel to each other in the longitudinal direction and differ from the runners that can be seen, for example, from AT 362 662 B in that they are not attached directly to the sled / bob, but on the replaceable, separate molded base. The advantage of this design is that one and the same bob can also be completed with a bottom shape without runners for water slides; this also applies if the runners wear or the tread is damaged. You get the basic structure and replace the inexpensive floor shape. The variant of the bottom shape for water rides is in turn manufactured in such a way that arched chambers allow the bob to be propelled forward by an external water jet (s) introduced from the water ram for the purpose of acceleration.

The design of the pneumatic chamber system used is, according to the invention, a tube formed by a curve, spline or NURBS, which - in contrast to known inventions - is not in one plane and has no linearity, i.e. is also curved in the third dimension and acts as a guide curve of circular cross sections which are variable and unchangeable in radius, the respective center points of the circle being on the guide curve and a lower cushion made in the buttock area as a separate chamber. The material used for the chambers with high elasticity such as synthetic rubber and the possible dosage of the chamber pressure depending on body weight enables adjustable driving behavior with optimal damping and experience effect. In contrast to known pneumatic slides, it is proposed according to the invention that the pneumatic construction is not filled with air as possible, but with tire gas (nitrogen or nitrogen mixture).

With this invention, it is possible to achieve an almost constant pressure at the usual temperature differences and not, like bobs or sleds filled with air, impair the pressure behavior and comfort without considerable pressure fluctuations without pressure compensation.

The outer skin, which can be detached from the fixed base shape by cut connections, is manufactured in such a way that it has a bucket seat and backrest for driving comfort and safety. A further embodiment of the invention is the mold attachment with handles which is in turn connected to the base mold and is located between the legs. This form attachment is manufactured in such a way that a lever pull brake, which is possible for use on snow or ice, as well as a retraction mechanism for the pull line can be integrated and for connecting several bobs when descending or as a hanging device for a chair lift on the front and rear of the floor mold a clutch or rope loop is attached.

Embodiments of the invention are explained below with reference to the drawings. Show it:

1 shows the bob in a perspective view, FIG. 2 shows a vertical section through the bob in the longitudinal direction,

3 is an exploded view of the individual components,

4 shows a vertical section through the bob in the transverse direction,

Fig. 5 is a vertical sectional view of the bottom molding in the transverse direction. Fig. 1 shows the bob in a perspective view with an essentially oval bottom shape encased by a shell (3) consisting of interconnected individual parts which are shown individually in the following figures. The bob has a bucket seat with a backrest (14) and a shaped attachment (15) which is located between the legs of the person using the bob. The term bucket seat (14) is to be understood as the seat recess including the backrest, which is derived from the shape of inflatable inner parts. To stabilize this shape, it is necessary to sew the buttocks and back of the bucket seat (14) in several layers of fabric and to stretch the edge between the buttocks and back using elastic bands in the body. The injection molded molding (15) is preferably made of soft plastic and gives the user optimum grip and safety. The handles (16, 17) in the middle or on the side offer the option of holding on while driving. The handles (16, 17) are screwed left and right over the recessed recessed grips and are designed in the form of straps with a plastic jacket due to the lower risk of injury. The handles (16, 17) are detachably fastened with a screw connection and can be replaced inexpensively with little effort if damaged.

Fig. 2 shows the vertical section through the bob with the lower cushion (12) located in the buttocks area. The components, the hose (11) and the lower cushion (12), which are referred to as the pneumatic chamber system (10), can be filled with tire gas (13) and are made of highly stretchable material, such as synthetic rubber. Depending on the chamber pressure, the lower cushion (12) positioned in the seat area is effective for the occupant with different damping. A coupling (21, 22) is attached to the bob at the front and rear. On the one hand, these are intended as a suspension device for lifts and, on the other hand, they serve to connect the bobs during the descent. The couplings are injection molded from plastic and attached to the bob with a screw connection. Integrated into the body is a retraction mechanism (19) with an extendable pull cord (20) and the lever pull brake (18). The provided pulling line (20) gives the user of the bob the opportunity to pull the mostly existing short distance between the lift exit and the track (toboggan run or bobsleigh track) and to stow it away for the descent by means of a retraction mechanism (19). The lever brake (18) is designed in such a way that the brake claws in the bob floor fold down as a result of the driver pulling the driver towards the body, thereby reducing the driving speed. A design of the bob that is suitable for water raft operation is the inward-curved chambers (9). In the embodiment shown, chambers (9) are formed on the back of the bob obliquely downwards as close as possible to the sliding surface on the left and right which give the bob an accelerating thrust in the water course when an externally introduced water jet is used.

Fig. 3 shows an exploded view of the essential components, the outer skin (1), the mold attachment (15), the hose (11) and the bottom molded part (4). The molded base part (4) is injection molded from splinter-free, elastic plastic and connected with an adhesive connection to the mold attachment (15). The outer skin (1) is connected by means of screw connections on the outer cutting radius to the molded base part (4) and in the inner cutting radius to the molded attachment (15). For this purpose, the outer skin (1) must be provided with metal eyelets in the edge area and the molded plastic parts are equipped with metal threads so that they can be detachably connected with screws.

Fig. 4 shows a vertical section in the middle of the shape attachment (15) of the bob with the inflatable inner skin (2) and an outer skin (1) pulled over this. One possible configuration for the snow are the runners (8) attached to the bottom part (4). The runners (8) are produced in one part by injection molding with the base molding (4).

Fig. 5 shows the bottom molded part (4) as a vertical sectional view with the arcuate shell segments (5) arranged opposite one another in the transverse direction. The design of the bottom part (4) that is used has two bottom sides

Curvatures and are referred to in the figure as outer sections (23). At the lowest point of the outer sections (23) is the contact surface (6) to the floor. The shaped bottom part (4) is designed in such a way that the inwardly directed central section (7) drains the snow or the water as a channel drawn from the front to the rear. The advantage of this is, in turn, a higher pressure on the contact surface (6), which prevents lateral sliding when cornering.

Claims

claims

1.Bob, which is used as a sports device for locomotion, for example on snow or water, with an inflatable and double-walled cover, which consists of an inflatable inner skin (soul) and an outer skin pulled over this, which is for the use of the bob on snow on the tread Improvement of the direction of travel stability is provided with runners, the inner skin (core) being made of elastic, stretchable plastic and the outer skin formed by this preferably made of abrasion-resistant, UV light-stable plastic (e.g. PVC), characterized in that the outer skin (1) Inner skin (2) and a bottom molded part (4) of the shell (3) consist of separate or easily detachable parts, the bottom molded part (4) for the respective use of the bob, eg. B. on snow or water, is removable and replaceable.

2. Bob according to claim 1, characterized in that the cover (3) is manufactured such that it is made from a base part (4) or base shell and a detachably connected, soft outer skin (1), that is to say the side facing the occupant is.

3. Bob according to claim 1 and 2, characterized in that the bottom molded part (4) consists of a plurality of cross-sectionally arranged, for example from three sections in cross-section curved arcuate shell segments (5), the curvature of the two outer sections ( 23) is directed downwards towards the ground or towards the roadway and forms a contact surface (6) with the ground or the running surface in the region which projects the deepest downwards and the curvature of the central section (7) points upwards.

4. Bob according to claim 3, characterized in that the bottom part (4) is made for the snow in such a way that runners (8) are applied to the tread, ie the side facing away from the occupant, in order to improve the direction of travel stability.

5. bob according to claim 3, characterized in that the bottom part (4) for water rides is made such that rearward inward or possibly also obliquely backward on the bottom, curved chambers (9) driving the bob forward by an external one of the Allow water path from discharged water jet (s) for the purpose of acceleration.

6. Bob according to claim 1, characterized in that the inflatable inner skin (2) is designed as a pneumatic chamber system (10) so that a tube (11) formed by a curve, spline or NURBS, which is not in one plane located and has no linearity, ie is also curved in the third dimension and which acts as a guide curve of circular cross sections which are variable and unchangeable, the respective The center of the circle are on the main curve and a lower cushion (12) made as a separate chamber in the seat area.

7. Bob according to claim 6, characterized in that the inflatable inner skin (2) is designed as a pneumatic chamber system (10) so that it is filled with tire gas (13) (nitrogen or nitrogen mixture).

8. Bob according to claim 1 and 2, characterized in that the outer skin (1) brought into shape by cut connections is made such that it has a bucket seat including backrest (14) for driving comfort and safety.

9. Bob according to claim 2 and 3, characterized in that on the bottom molded part (4) or the bottom shell with side handles (17) is located between the legs shaped attachment (15) with handles (16).

10. Bob according to claims 1 and 9, characterized in that the shaped attachment (15) is manufactured in such a way that a lever pull brake (18), which is possible for use on snow or ice, and a roll-up mechanism (19) for the pull line (20). can be integrated and a coupling (21, 22) or rope loop is attached to the front and the back of the bottom shape.