HYBRID PULLEY, ROLLER SEAT, ROLLER TRACK AND ROLLER SEAT STORAGE SYSTEM FOR A ROWING BOAT

Abstract

Shown and described is a hybrid roller (1) for a roller seat (20) of a rowing boat, comprising: a bearing element (3), and a roller body (4), wherein the roller body (4) surrounds the bearing element (3) at least in sections, wherein the roller body (4) has an outer section (5) and an inner section (6), wherein the outer section (5) has a roller body contact surface (7) for at least partially contacting a roller rail (2) for a rowing boat, and wherein the inner section (6) surrounds and / or contacts the bearing element (3) at least in sections. In order for the hybrid roller (1) to have reduced friction and at the same time offer a certain level of seating comfort, it is proposed that the outer section (5), preferably the roller body contact surface (7), at least in sections have a higher modulus of elasticity than the inner section (6).Also described is a rolling seat (20), a rolling rail (2) and a rolling seat storage system for a rowing boat.

Description

[0001] The present invention relates to a hybrid roller for a roller seat of a rowing boat, comprising: a bearing element, and a roller body, wherein the roller body surrounds the bearing element at least in sections, wherein the roller body has an outer section and an inner section, wherein the outer section has a roller body contact surface for at least partially contacting a roller rail for a rowing boat, and wherein the inner section surrounds and / or contacts the bearing element at least in sections.

[0002] The present invention further relates to a roller seat for a rowing boat, comprising: a seat element and a plurality of rollers.

[0003] The present invention further relates to a roller rail for a rowing boat, comprising: a, preferably elongated, base body with a recess, and a, preferably elongated, roller rail contact surface for at least partially contacting a roller of a roller seat for a rowing boat.

[0004] The present invention further relates to a rolling seat storage system, comprising: at least one roller for a rolling seat, preferably a hybrid roller according to one of claims 1 to 5, at least one rolling seat for a rowing boat, preferably a rolling seat according to one of claims 6 to 11, and / or at least one rolling rail for a rowing boat, preferably a rolling rail according to one of claims 12 to 14.

[0005] Over the last few decades, the technology of roller seat bearing systems for rowing boats has continued to evolve. Earlier roller seats comprised rollers with roller bodies made entirely of brass, with these rollers being mounted on a carriage-like construction. The roller seat rolled with the roller bodies on wooden roller rails, with the roller rails sometimes including brass inserts as a roller rail contact surface. Over time, roller bodies made entirely of plastic were used, and aluminum alloys were used instead of wood and brass. The carriage-like construction for supporting the rollers on the roller seat was also gradually replaced by bearings for the rollers using rolling elements on an axle. A corresponding bearing is known, for example, from DE 10 2012 206 670 A1, whereby the roller body is made entirely of metal.

[0006] The currently popular roller bodies, which are made entirely of plastic, are easy to manufacture and offer good cushioning properties, which improve seating comfort. However, friction losses during rolling are significantly higher with roller bodies made entirely of plastic compared to roller bodies made entirely of metal, such as those in DE 10 2012 206 670 A1. The use of all-plastic roller bodies therefore leads to lower rolling speeds and / or faster fatigue for the rower compared to all-metal roller bodies, which has significant disadvantages, particularly in rowing races.

[0007] Against this background, the present invention is based on the object of providing a hybrid roller, a roller seat, a roller rail and a roller seat support system for a rowing boat, which have reduced friction and at the same time offer a certain seating comfort.

[0008] The above-mentioned object is achieved for the hybrid roller in that the outer section, preferably the roller body contact surface, has at least in sections a higher modulus of elasticity than the inner section.

[0009] Various embodiments of the hybrid roller, the rolling seat, the roller rail, and the rolling seat support system are described below. The individual embodiments apply independently to the hybrid roller, the rolling seat, the roller rail, and the rolling seat support system. Furthermore, the individual embodiments can be combined with one another as desired.

[0010] The hybrid roller for a rolling seat of a rowing boat comprises: a bearing element. The bearing element facilitates low-friction rolling of the hybrid roller. The bearing element can comprise a rolling bearing, preferably a rolling bearing. The bearing element can comprise an inner ring, an outer ring, and / or at least one rolling element. The rolling element can contact the inner ring and / or the outer ring and / or be arranged, preferably movably, between the outer ring and the inner ring. The bearing element, preferably the rolling bearing, can comprise a deep groove ball bearing, preferably in accordance with DIN 625, an angular contact ball bearing, preferably a double-row angular contact ball bearing, and / or a four-point contact bearing, preferably in accordance with DIN 625, an angular contact ball bearing, preferably a double-row angular contact ball bearing, and / or a four-point contact bearing.The use of appropriate bearings particularly simplifies the guidance accuracy of the hybrid roller on a roller seat. Although the four-point contact bearing offers less guidance accuracy than an angular contact ball bearing, it is generally narrower, thus simplifying the design of narrow roller seats for narrower track widths of roller rails. The angular contact ball bearing is preferably designed as a double-row angular contact ball bearing.

[0011] The hybrid roller also comprises a roller body. The roller body facilitates smooth movement while rowing. The roller body preferably contacts the bearing element at least in sections; preferably, the roller body is connected to the bearing element at least in sections. Alternatively or additionally, the roller body can be torus-shaped and / or donut-shaped. The roller body can have a greater width than the bearing element at least in sections and / or protrude beyond the bearing element at least in sections on at least one side, preferably at least two sides, of the bearing element, preferably laterally.

[0012] Furthermore, it is provided that the roller body surrounds the bearing element at least in sections, that the roller body has an outer section and an inner section, that the outer section has a roller body contact surface for at least partially contacting a roller rail for a rowing boat, and that the inner section surrounds and / or contacts the bearing element at least in sections. It can be provided that the inner section essentially completely surrounds and / or contacts the bearing element. Advantageously, it is provided that the inner section at least in sections, preferably essentially completely, contacts and / or surrounds the outer ring of the bearing element. This simplifies a stable connection between the outer ring and the inner section and also a compact design of the hybrid roller.Alternatively or additionally, it is provided that the outer section surrounds and / or contacts the inner section at least in sections, preferably substantially completely. This simplifies a stable connection between the outer section and the inner section. Preferably, the inner surface of the outer section surrounds and / or contacts the outer surface of the inner section. The outer section, preferably the roller body contact surface and / or the outer surface of the outer section, can be designed to be convex and / or concave at least in sections, preferably substantially completely. A convex design can minimize the contact surface with the roller rail and thus minimize friction. A concave design, in turn, increases the contact surface, which in turn can increase stability when rolling.

[0013] The hybrid roller can comprise a central axis, preferably designed as an axis of rotation and / or axis of symmetry, wherein the bearing element and / or the roller body, preferably the inner section and / or the outer section, are advantageously arranged around the central axis and / or extend around the central axis, preferably surrounding the central axis. The central axis is the axis around which the hybrid roller rotates when used as a roller for a roller seat. The bearing element is advantageously arranged at least partially further inwards radially with respect to the central axis than the roller body. Alternatively or additionally, the inner section is advantageously arranged at least partially further inwards radially with respect to the central axis than the roller body. Advantageously, the roller body surrounds the bearing element at least partially, preferably essentially completely, in the circumferential direction around the central axis.Alternatively or additionally, the outer section can surround the inner section at least partially, preferably substantially completely, in the circumferential direction around the central axis.

[0014] Terms such as “inside”, for example, the inner surface of the inner section, and “outside”, for example, the outer surface of the inner section, are preferably understood relative to the central axis.

[0015] Furthermore, the outer section, preferably the roller body contact surface, is provided with a higher modulus of elasticity than the inner section, at least in some sections. This makes it easier to achieve a small pressure ellipse between the roller body contact surface of the hybrid roller and a cooperating roller rail, despite the weight of a rower acting on the hybrid roller. In other words, this reduces the deformation of the roller body contact surface of the hybrid roller under load. This can reduce the friction of the hybrid roller when rolling. At the same time, greater deformation or deflection is permitted at the inner section, thus providing a certain level of seating comfort.The outer section, preferably the roller body contact surface, can have, at least in sections, preferably substantially completely, an E-modulus of at least 50 GPa, preferably at least 100 GPa, more preferably at least 150 GPa, more preferably at least 200 GPa, more preferably at least 250 GPa, in particular at least 300 GPa. Alternatively or additionally, the inner section can have, at least in sections, preferably substantially completely, an E-modulus of at most 50 GPA, preferably at most 25 GPA, more preferably at most 10 GPA, more preferably at most 5 GPA, more preferably at most 2 GPA, more preferably at most 1 GPA, in particular at most 0.5 GPA.

[0016] In one embodiment of the hybrid roller, it is provided that the outer section, preferably the roller body contact surface, is made at least in sections from metal, preferably iron, steel and / or aluminum, and / or from ceramic and / or that the inner section is made at least in sections from plastic, preferably polyoxymethylene, and / or metal, preferably aluminum. The use of metal and / or ceramic makes it easier to obtain an outer section that has a sufficiently high modulus of elasticity. In addition, the use of metal and / or ceramic increases wear resistance. The use of plastic, in turn, makes it easier to provide a certain elasticity and thus seating comfort through the inner section. In addition, the use of plastic reduces the noise generated by the hybrid roller and reduces the weight of the hybrid roller.Preferably, the outer section, preferably the roller body contact surface, is made substantially entirely of metal, preferably iron, steel and / or aluminum, and / or ceramic, and / or the inner section is made substantially entirely of plastic, preferably polyoxymethylene. This further enhances the aforementioned properties. The inner section can be designed as an injection-molded element and / or the inner section can be injection-molded and / or cast onto the bearing element, preferably the outer ring of the bearing element. This simplifies manufacture and provides a stable connection between the roller body and the bearing element. However, it has also been found that the inner section can be made at least of aluminum to achieve the positive effects of the hybrid roller. This is particularly the case when the outer section is made of steel.The softer and more elastic aluminum on the inner section is still sufficiently deformable compared to the steel outer section, allowing sufficient deflection to provide a certain level of comfort, especially compared to solid steel wheels. At the same time, the hybrid wheel is stiffer than a hybrid wheel with a plastic inner section, which further minimizes friction.

[0017] In one embodiment of the hybrid roller, it is provided that the inner section is press-fitted into the hybrid roller, preferably to the bearing element and / or the outer section, and / or the inner section is designed as a press bushing. This simplifies mass production, particularly when the inner section is made of a metal, for example aluminum. It also simplifies a secure connection between the bearing element, outer section, and inner section, particularly when the inner section is made of metal. Preferably, the inner section is pressed into the hybrid roller, preferably between the outer section and the bearing element. This further simplifies the provision of a secure connection.

[0018] In one embodiment of the hybrid roller, it is provided that the widest section of the outer section has a smaller width than the widest section of the inner section, that the widest section of the outer section has the same or smaller width than the narrowest section of the inner section, that the inner surface of the outer section has a smaller width than the inner surface of the inner section and / or that the inner surface of the outer section has the same or smaller width than the outer surface of the inner section. As a result, the area and / or volume of the inner section is larger than the area and / or volume of the outer section, such that the smallest possible roller body contact area is achieved with the largest possible resilient inner section. This further increases the reduction in friction when rolling while at the same time ensuring seating comfort.

[0019] The width preferably corresponds to the direction and / or extent parallel to the central axis.

[0020] In one embodiment of the hybrid roller, it is provided that the outer section and the inner section are positively connected to one another, that the outer section, preferably the inner surface of the outer section, has at least one recess and / or at least one projection for positively connecting to the inner section, preferably the outer surface of the inner section, and / or that the inner section, preferably the outer surface of the inner section, has at least one recess and / or at least one projection for positively connecting to the outer section, preferably the inner surface of the outer section. This simplifies a stable connection between the inner section and the outer section. The inner section and the outer section are preferably connected to one another by means of a tongue and groove connection.In particular, it has been shown that even if the inner section has no projections and / or recesses, the inner section can be securely connected to the outer section, in particular to a recess in the outer section, in a form-fitting manner. Preferably, the inner section can be arranged, preferably pressed in, at least in sections in a plastically deformed manner between the outer section and the bearing element, and / or at least one plastically deformed section of the inner section, in particular of the outer surface of the inner section, can extend, preferably hook, into a recess in the outer section, preferably a recess in the inner surface of the outer section. The plastically deformed section is preferably plastically deformed by being arranged, preferably pressed in, between the outer section and the bearing element.This can, for example, further improve the grip in the hybrid roller even with press bushings, especially those made of aluminum, which usually have a smooth surface.

[0021] Alternatively or additionally, the inner section and the outer section can be connected to each other in a force-fitting and / or material-fitting manner.

[0022] In one embodiment of the hybrid roller, it is provided that the roller body, preferably the inner section, and the bearing element, preferably the outer ring of the bearing element, are positively connected to one another, that the roller body, preferably the inner section, in particular the inner surface of the inner section, has at least one recess and / or at least one projection for positively connecting to the bearing element, preferably the outer ring of the bearing element, and / or that the bearing element, preferably the outer ring of the bearing element, has at least one recess and / or at least one projection for positively connecting to the roller body, preferably the inner section. This simplifies a stable connection between the roller body and the bearing element.Preferably, the roller body, preferably the inner section, and the bearing element, preferably the outer ring of the bearing element, are connected to one another by means of a tongue and groove connection. In particular, it has been shown that even if the inner section has no projections and / or recesses, the inner section can be securely connected to the bearing element, in particular to a recess in the bearing element, in a form-fitting manner. Preferably, the inner section can be arranged, preferably pressed in, at least in sections in a plastically deformed manner between the outer section and the bearing element, and / or at least one plastically deformed section of the inner section, in particular the inner surface of the inner section, can extend, preferably hook, into a recess in the bearing element, preferably a recess in the outer ring of the bearing element.The plastically deformed section is preferably plastically deformed by being arranged, preferably pressed in, between the outer section and the bearing element. This can further improve the grip in the hybrid roller, for example, even with press bushings, especially those made of aluminum, which generally have a smooth surface.

[0023] Alternatively or additionally, the roller body, preferably the inner section, and the bearing element, preferably the outer ring of the bearing element, are connected to one another in a force-fitting and / or material-fitting manner.

[0024] The above-mentioned object is also achieved in the rolling seat for a rowing boat in that at least one roller, preferably at least two rollers, more preferably at least three rollers, in particular at least four rollers, of the plurality of rollers is each a hybrid roller according to one of claims 1 to 5.

[0025] The rolling seat for a rowing boat comprises: a seat element. The seat element can comprise a seating surface for a rower to sit on while rowing. The seat element can be designed as a seat shell and / or the seat element can have at least one, preferably at least two recesses, preferably through-openings, for receiving the pelvic bone of a rower. The seat element is advantageously made at least in sections, preferably substantially entirely, from wood, plastic, and / or a composite material, preferably carbon fiber reinforced plastic (CFRP) and / or glass fiber reinforced plastic (GFRP).

[0026] The rolling seat also includes a plurality of rollers. The rollers facilitate low-friction movement of a rower when rowing on the rolling seat. The plurality of rollers are preferably arranged along one side, preferably the underside, of the rolling seat, preferably the seat element, and / or the plurality of rollers are arranged opposite the seat surface, preferably relative to the seat element. The plurality of rollers can comprise at least four rollers, preferably consisting of four rollers. This achieves a good compromise between stability and low friction.

[0027] Furthermore, it is provided that at least one roller, preferably at least two rollers, more preferably at least three rollers, in particular at least four rollers, of the plurality of rollers is each a hybrid roller according to one of claims 1 to 5. The hybrid rollers reduce friction during rolling and simultaneously enable sufficient seating comfort. In the configuration with at least three hybrid rollers, the hybrid rollers also preferably provide a statically determined bearing system, so that the additional rollers of the plurality of rollers are generally only required for support in the event of strong fluctuations, and friction can be kept low.

[0028] The rolling seat may also comprise a frame element. The frame element may be connected to the seat element and / or the plurality of rollers. The frame element may be made of metal, preferably aluminum. The frame element is preferably arranged on the underside of the seat element and / or opposite the seat surface, preferably relative to the seat element.

[0029] In one embodiment of the rolling seat, it is provided that at least one roller, preferably at least two rollers, more preferably at least three rollers, of the plurality of rollers is each a normal roller, that the normal roller has a contact surface for at least partially contacting a roller rail for a rowing boat and that the contact surface of the normal roller is made at least partially from plastic, preferably polyoxymethylene and / or that the contact surface of the normal roller has a lower modulus of elasticity than the roller body contact surface of the hybrid roller. By using at least one normal roller, the manufacture of the rolling seat is simplified and at the same time sufficient seating comfort is ensured. Preferably, at least one normal roller, preferably all normal rollers, has a greater width than at least one, preferably all hybrid rollers.The standard rollers can thus better adapt to a roller rail that interacts with the roller seat, thus facilitating improved stability of the roller seat while rowing. Furthermore, the narrower design of the hybrid rollers keeps overall friction low.

[0030] In one embodiment of the rolling seat, it is provided that the rolling seat comprises: at least one front axle and / or at least one rear axle, wherein at least two rollers of the plurality of rollers are arranged on the front axle and / or at least two rollers of the plurality of rollers are arranged on the rear axle and wherein, preferably, the at least two rollers of the front axle are arranged at opposite end regions of the front axle and / or the at least two rollers of the rear axle are arranged at opposite end regions of the rear axle. This simplifies stable mounting of the rolling seat in the rowing boat. The rear axle is advantageously assigned to the bow of the rowing boat and / or closer to the bow of the rowing boat than the front axle, preferably when the rolling seat is used in a rowing boat.The front axle is, preferably when the rolling seat is used in a rowing boat, advantageously assigned to the stern of the rowing boat and / or closer to the stern of the rowing boat than the front axle. The front axle and / or the rear axle do not have to be designed as a continuous or one-piece element; therefore, it can preferably be provided that the front axle and / or the rear axle are each made up of multiple parts and / or components of the front axle and / or the rear axle are each arranged along a common direction and / or imaginary axis. This can reduce the weight of the rolling seat. The front axle and the rear axle are advantageously spaced from one another, preferably along the direction of movement and / or axis of symmetry of the rolling seat.

[0031] In one embodiment of the rolling seat, it is provided that at least one roller, preferably at least two rollers, on the front axle is a hybrid roller, that at least one roller, preferably at least two rollers, on the rear axle is a hybrid roller, that preferably at least one roller, preferably at least two rollers, on the front axle is a normal roller and / or that preferably at least one roller, preferably at least two rollers, on the rear axle is a normal roller. The more hybrid rollers are used, the less friction occurs when rolling using the rolling seat, and the more normal rollers are used, the greater the stability and seating comfort when rolling.By choosing whether hybrid rollers and / or seat rollers are arranged on the front axle and / or the rear axle, it can also be influenced whether greater stability or lower friction should be present when rolling forward or rolling back, i.e. preferably when pulling the oar, since the rower's center of gravity and thus the load on the rollers is then more towards the front axle (when rolling forward) or the rear axle (when rolling back).

[0032] In one embodiment of the rolling seat, it is provided that at least one roller of the front axle and at least one roller of the rear axle are arranged on regions, preferably end regions, of the respective axle that are opposite one another relative to the direction of movement and / or the axis of symmetry of the rolling seat, and are each hybrid rollers, and / or that at least one roller of the front axle and at least one roller of the rear axle are arranged on regions, preferably end regions, of the respective axle that are opposite one another relative to the direction of movement and / or the axis of symmetry of the rolling seat, and are each normal rollers. This provides a good compromise between low friction, stability, and seating comfort.

[0033] In one embodiment of the rolling seat, it is provided that at least one roller, preferably at least two rollers, in particular at least three rollers, of the plurality of rollers has a smaller diameter than at least one other roller of the plurality of rollers and / or that at least one normal roller has a smaller diameter than at least one hybrid roller. This makes it easier for the load when rowing to be distributed over only some of the rollers, in particular the hybrid rollers. In particular, if the hybrid rollers have a larger diameter, low friction can be achieved because the rower's weight is then primarily carried by these rollers. Advantageously, all normal rollers have a smaller diameter than at least one hybrid roller, preferably than all hybrid rollers.A smaller diameter can preferably be a difference of at least 0.5%, preferably at least 1%, more preferably at least 2%, in particular at least 5% and / or of at most 10%, preferably at most 5%, more preferably at most 2%, in particular at most 1%.

[0034] The above-mentioned object is also achieved in the roller rail for a rowing boat in that the roller rail contact surface is made at least in sections from iron, steel and / or ceramic and / or in that the roller rail contact surface has at least in sections an E-modulus of at least 50 GPa, preferably at least 100 GPa, more preferably at least 150 GPa, more preferably at least 200 GPa, more preferably at least 250 GPa, in particular at least 300 GPa.

[0035] The roller track for a rowing boat comprises: a preferably elongated base body with a recess. The recess can be convex and / or concave, at least in sections, preferably substantially entirely. The recess is preferably elongated and / or extends along the predominant length of the base body. The length of the base body preferably corresponds to the direction of movement of a rolling seat interacting with the roller track. The base body is advantageously made, at least in sections, preferably substantially entirely, from metal, preferably aluminum, plastic and / or a composite material, preferably a fiber-reinforced plastic, in particular carbon-fiber-reinforced plastic and / or glass-fiber-reinforced plastic. A concave design of the recess can minimize the contact surface with a roller of the rolling seat and thus minimize friction.A convex design, in turn, increases the contact area, which in turn can increase stability during rolling. Furthermore, debris can easily fall off the roller rail, thus minimizing friction caused by residual debris. By using plastic and / or composite materials, especially fiber-reinforced plastic, the risk of corrosion on the insert element can be minimized when using an insert element.

[0036] The roller rail further comprises a preferably elongated roller rail contact surface for at least partially contacting a roller of a rolling seat for a rowing boat. The roller rail contact surface can be convex and / or concave, at least in sections, preferably substantially entirely. The roller rail contact surface can be formed, at least in sections, by the base body, preferably the recess of the base body, in particular the surface of the recess of the base body. Alternatively or additionally, the roller rail contact surface can be arranged, at least in sections, on the recess of the base body. By configuring the roller rail contact surface in a concave manner, the contact surface with a roller of the rolling seat can be minimized, thus minimizing friction.A convex design increases the contact area, which in turn can increase stability when rolling, and in addition, debris can easily fall off the roller rail, thus minimizing friction caused by residual debris.

[0037] Furthermore, the roller rail is provided with the roller rail contact surface being made at least in sections from iron, steel and / or ceramic and / or with the roller rail contact surface having, at least in sections, a modulus of elasticity of at least 50 GPa, preferably at least 100 GPa, more preferably at least 150 GPa, more preferably at least 200 GPa, more preferably at least 250 GPa, in particular at least 300 GPa. This makes it easier to achieve a small pressure ellipse between the roller rail contact surface and a cooperating roller for a roller seat. In other words, this reduces the deformation of the roller rail contact surface of the roller rail under load.

[0038] In one embodiment of the roller rail, it is provided that the roller rail contact surface is formed at least in sections by at least one insert element, and that, preferably, the insert element is inserted at least in sections into a recess in the cutout of the base body and / or the insert element at least in sections covers the cutout of the base body. As a result, the entire roller rail contact surface does not have to be formed by the base body, and in particular, the sections relevant to the roller rail contact surface can be made of a different material than the base body.Advantageously, the insert element, preferably the surface of the insert element forming the roller rail contact surface, is made at least in sections from iron, steel and / or ceramic and / or has at least in sections an E-modulus of at least 50 GPa, preferably at least 100 GPa, more preferably at least 150 GPa, more preferably at least 200 GPa, more preferably at least 250 GPa, in particular at least 300 GPa. As a result, the insert element forms at least in sections the regions of the roller rail contact surface which are intended to reduce friction. Preferably, it can be provided that the insert element essentially completely covers the recess in the base body. This makes it easier to achieve the aforementioned effects over the entire rolling length of a rowing stroke and / or even in the event of fluctuations and the associated rolling of the roller.It can also be provided that the insert element has a higher modulus of elasticity than the base body, at least in sections, preferably essentially entirely. This simplifies the process by requiring only the parts of the roller rail intended for contact with a roller, preferably a hybrid roller, to be designed with corresponding rigidity.

[0039] In one embodiment of the roller rail, it is provided that the roller rail contact surface is at least partially curved and / or, preferably in the region of the insert element, is at least partially flat. An arcuate design simplifies the safe and guided running of a roller in the roller rail. The flat design makes it easier to manufacture the roller rail, in particular it is easier to manufacture an insert element for the roller rail and, moreover, the contact areas between the roller rail and the roller, in particular with the sides of the roller, can be minimized. By combining both designs, both effects can be combined. Advantageously, the roller rail contact surface is essentially completely curved. The at least partially flat design of the roller rail contact surface can preferably be formed by the insert element.Advantageously, the surface of the insert element forming the roller rail contact surface is flat, at least in sections. Preferably, the roller rail contact surface is flat, at least in the region of the insert element, preferably substantially completely.

[0040] In one embodiment of the roller rail, it is provided that the recess in the base body, preferably along the longitudinal extent of the base body, is at least partially surrounded by, preferably only, one long side or two long sides of the base body and / or the recess, preferably relative to the roller rail contact surface, and / or the base body extends away relative to the roller rail contact surface, preferably in the direction opposite an underside of the base body assigned to a rowing boat. By surrounding the recess with two long sides, a roller of a rolling seat is easily prevented from slipping out of the roller rail. By surrounding the recess with only one long side, on the other hand, abrasion can be more easily removed from the roller rail and thus friction during rolling is minimized.Furthermore, it can be provided that the base body extends away from the roller rail contact surface on one longitudinal side of the recess and / or the base body, preferably starting from the roller rail contact surface, relative to the roller rail contact surface, and / or extends, preferably starting from the roller rail contact surface, on a longitudinal side of the recess and / or the base body, preferably opposite the roller rail contact surface, at least in sections flat and / or sloping, preferably in the direction of an underside of the base body associated with a rowing boat. This further enhances the already mentioned advantages of surrounding the recess from one or two sides.

[0041] The above-mentioned task is also solved by the rolling seat storage system for a rowing boat

[0042] The rolling seat support system for a rowing boat comprises: at least one roller for a rolling seat, preferably a hybrid roller according to one of claims 1 to 5, at least one rolling seat for a rowing boat, preferably a rolling seat according to one of claims 6 to 11, and / or at least one roller rail for a rowing boat, preferably a roller rail according to one of claims 12 to 14. This provides a rolling seat support system with reduced friction and sufficient seating comfort. Preferably, the rolling seat support system comprises at least two, at least three, at least four hybrid rollers according to one of claims 1 to 5 and / or at least two roller rails according to one of claims 12 to 14.

[0043] Further features and advantages of the hybrid roller, the roller seat, the roller rail and the roller seat storage system will become apparent from the following description of embodiments, with reference to the attached drawing.

[0044] In the drawing show Fig. 1 a first embodiment of a hybrid roller on a roller rail in a sectional front view, Fig. 2 a second embodiment of a hybrid roller on a roller rail in a sectional front view, Fig. 3 a third embodiment of a hybrid roller on a roller rail in a sectional front view, Fig. 4 a fourth embodiment of a hybrid roller on a roller rail in a sectional front view, Fig. 5 a fifth embodiment of a hybrid roller on a roller rail in a sectional front view, Fig. 6 an embodiment of a normal roller on a roller rail in a sectional front view, Fig. 7 an embodiment of a rolling seat in a bottom view. Fig. 8 a sixth embodiment of a hybrid roller on a roller rail in a sectional front view and Fig. 9. a seventh embodiment of a hybrid roller on a roller rail in a sectional front view.

[0045] Fig. Figure 1 shows a first embodiment of a hybrid roller 1 on a roller rail 2 in a sectional front view. The hybrid roller 1 is intended to be mounted on a roller seat for a rowing boat.

[0046] The hybrid roller 1 comprises a bearing element 3 and a roller body 4. The roller body 4 surrounds the bearing element 3 and, in the embodiment shown, has approximately the same width as the bearing element 3. The roller body 4 has an outer section 5 and an inner section 6. The outer section 5 also includes a roller body contact surface 7 for contacting the roller rail 2. The roller body contact surface 7 is convex in the embodiment shown, but can alternatively be concave.

[0047] The bearing element 3 comprises an inner ring 8, an outer ring 9, and at least one rolling element 10. The inner section 6 of the rolling element 4 is connected to the outer ring 9 of the bearing element 3. For this purpose, the outer ring 9 of the bearing element 3 comprises a plurality of recesses 11 that positively engage the projections 12 of the inner section 6.

[0048] In a similar manner, the inner portion 6 and the outer portion 5 are connected, the inner portion 6 having a projection 13 and the outer portion 5 having a recess 14 to achieve a positive connection.

[0049] The outer section 5, in particular the roller body contact surface 7, has a higher modulus of elasticity in the hybrid roller 1 than the inner section 6. In the embodiment shown, the inner section 6 is made of plastic and the outer section 6 is made of metal.

[0050] The hybrid roller 1 has a central axis Z, whereby the central axis Z is simultaneously the rotation axis and the symmetry axis of the hybrid roller 1.

[0051] The hybrid roller 1 is arranged in sections on, in particular on, the roller rail 2. The roller rail 2 has a base body 15 with a recess 16. A roller rail contact surface 17 is provided on the recess 16 for contacting a roller, in the present embodiment, the hybrid roller 1. The hybrid roller 1 is in contact with the roller rail 2, with the roller body contact surface 7 and the roller rail contact surface 17 making mutual contact.

[0052] The base body 15 of the roller rail is made of aluminum, wherein the roller rail contact surface 17 has an E-modulus of at least 100 GPa.

[0053] The recess 16, in particular the roller rail contact surface 17, is arc-shaped, in particular convex in the embodiment shown, but can alternatively be concave.

[0054] Fig. Figure 2 shows a second embodiment of a hybrid roller 1 on a roller rail 2 in a sectional front view. In the following, particular attention is paid to the differences from the hybrid roller 1 and / or the roller rail 2 of the first embodiment according to Fig. 1. Components of the hybrid roller 1 and / or the roller rail 2 of the Fig. 2, the components of the hybrid roller 1 and / or the roller rail 2 of the Fig. 1 are also provided with corresponding reference symbols.

[0055] The hybrid role 1 of the Fig. 2 differs in particular from the hybrid role 1 of the Fig. 1, that the bearing element 3 is designed as a four-point bearing. This is indicated by the dashed contact axes K of the four-point bearing.

[0056] Fig. Figure 3 shows a third embodiment of a hybrid roller 1 on a roller rail 2 in a sectional front view. In the following, particular attention is paid to the differences from the hybrid roller 1 and / or the roller rail 2 of the first embodiment according to Fig. 1. Components of the hybrid roller 1 and / or the roller rail 2 of the Fig. 3, the components of the hybrid roller 1 and / or the roller rail 2 of the Fig. 1 are also provided with corresponding reference symbols.

[0057] The roller rail 2 of the Fig. 3 differs in particular from the roller rail 2 of the Fig. 1, that an insert element 18 is arranged in a recess 19 in the base body 15 of the roller rail 2. It can be provided that the roller rail contact surface 17 is formed at least partially, preferably substantially completely, by the insert element 18. In the embodiment shown, the insert element 18 is curved, in particular convex, in the region of the roller rail contact surface 17.

[0058] Fig. Figure 4 shows a fourth embodiment of a hybrid roller 1 on a roller rail 2 in a sectional front view. In the following, particular attention is paid to the differences from the hybrid roller 1 and / or the roller rail 2 of the first embodiment according to Fig. 1. Components of the hybrid roller 1 and / or the roller rail 2 of the Fig. 4, the components of the hybrid roller 1 and / or the roller rail 2 of the Fig. 1 are also provided with corresponding reference symbols.

[0059] The hybrid role 1 of the Fig. 4 differs in particular from the hybrid role 1 of the Fig. 1, that the roller body 4 is wider than the bearing element 3 and projects laterally beyond the bearing element 3. In addition, the roller body contact surface 7 has a flatter radius of curvature in sections than the roller body contact surface 7 of the hybrid roller 1 of the Fig. 1.

[0060] The roller rail 2 of the Fig. 4 differs in particular from the roller rail 2 of the Fig. 1, that an insert element 18 is arranged in a recess 19 in the base body 15 of the roller rail 2. In this case, it can be provided that the roller rail contact surface 17 is formed at least partially, preferably essentially completely, by the insert element 18. In the embodiment shown, the insert element 18 is flat in the region of the roller rail contact surface 17. This achieves a more flat contact between the hybrid roller 1 and the roller rail 2. Although this leads to somewhat higher friction, it simultaneously increases the stability of the hybrid roller 1 during rolling.

[0061] Fig. Figure 5 shows a fifth embodiment of a hybrid roller 1 on a roller rail 2 in a sectional front view. In the following, particular attention is paid to the differences to the hybrid roller 1 and / or the roller rail 2 of the first embodiment according to Fig. 1. Components of the hybrid roller 1 and / or the roller rail 2 of the Fig. 5, the components of the hybrid roller 1 and / or the roller rail 2 of the Fig. 1 are also provided with corresponding reference symbols.

[0062] The hybrid role 1 of the Fig. 5 differs in particular from the hybrid role 1 of the Fig. 1, that the roller body 4 is wider than the bearing element 3 and projects laterally beyond the bearing element 3. In addition, the widest section of the outer section 5 of the roller body 3 has a smaller width than the widest section of the inner section 6 of the roller body 3, and the widest section of the outer section 5 of the roller body 3 has the same width as the narrowest section of the inner section 6 of the roller body 3.

[0063] In addition, the outer ring 9 of the bearing element 3 comprises only one recess 11 into which a projection 12 of the inner section 6 engages in a form-fitting manner.

[0064] The roller rail 2 of the Fig. 5 differs in particular from the roller rail 2 of the Fig. 1, an insert element 18 is arranged in the recess 16 of the base body 15 of the roller rail 2. The insert element 18 covers the recess 16, so that the roller rail contact surface 17 is predominantly, in particular exclusively, formed by the insert element 18. In the embodiment shown, the insert element 18 is curved, in particular convex, in the region of the roller rail contact surface 17.

[0065] Fig. 6 shows an embodiment of a normal roller 1' on a roller rail 2 in a sectional front view.

[0066] The normal role 1' preferably partially corresponds to the hybrid role 1 of the Fig. 1. The standard roller 1' comprises a bearing element 3' and a roller body 4'. The roller body 4' has a contact surface 7' for contacting the roller rail 2.

[0067] The bearing element 3' comprises an inner ring 8', an outer ring 9', and at least one rolling element 10'. The roller body 4 is connected to the outer ring 9' of the bearing element 3'. However, in the standard roller 1', the roller body 4' is formed as a single piece and is made entirely of plastic. The roller body 4' is also wider than the bearing element 3' and projects laterally beyond the bearing element 3'.

[0068] The roller rail of the Fig. 6 corresponds to the roller rail 2 of the Fig. 1.

[0069] Fig. Figure 7 shows an embodiment of a rolling seat 20 in a bottom view. The rolling seat 20 comprises a seat element 21 and a plurality of rollers 1". The rollers 1" are arranged on a front axle 22 and a rear axle 23. In the embodiment shown, the rollers 1" are arranged at opposite end regions of the respective axles 22, 23.

[0070] The rollers 1" can be used as a hybrid roller 1 according to one of the embodiments of the Fig. 1 to 5 and / or as a normal roll 1' according to the embodiment of the Fig. 6. It is preferred if at least one of the rollers 1" of the rolling seat 20 is designed as a hybrid roller 1. In particular, a design in which one of the rollers 1" on the front axle 22 and one of the rollers 1" on the rear axle 23 are designed as a hybrid roller 1 is preferred. In this case, it is again preferred if the hybrid rollers 1 on the front axle 22 and the hybrid roller 1 on the rear axle 23 are arranged at opposite end regions of the respective axle 22, 23 with respect to the direction of movement B. The remaining rollers 1" are each designed as a normal roller 1' in the embodiment of the rolling seat 20 shown.

[0071] The rolling seat 20 also comprises a frame element 24 and two through openings 25 for receiving the pelvic bone of a rower sitting on the rolling seat 20.

[0072] The Fig. Fig. 8 shows a sixth embodiment of a hybrid roller 1 on a roller rail 2 in a sectional front view. In the following, particular attention is paid to the differences from the hybrid roller 1 and / or the roller rail 2 of the first embodiment according to Fig. 1. Components of the hybrid roller 1 and / or the roller rail 2 of the Fig. 9, the components of the hybrid roller 1 and / or the roller rail 2 of the Fig. 1 are also provided with corresponding reference symbols.

[0073] In the hybrid roller 1 of this sixth embodiment, the inner section 6 is designed as a press bushing and is arranged in the hybrid roller 1 with a press fit to the bearing element 3 and the outer section 5, in particular pressed into the hybrid roller 1. In the embodiment shown, the inner section 6 is made of aluminum and the outer section 5 is made of steel.

[0074] Fig. Fig. 9 shows a seventh embodiment of a hybrid roller 1 on a roller rail 2 in a sectional front view. In the following, particular attention is paid to the differences from the hybrid roller 1 and / or the roller rail 2 of the fourth embodiment according to Fig. 4. Components of the hybrid roller 1 and / or the roller rail 2 of the Fig. 9, the components of the hybrid roller 1 and / or the roller rail 2 of the Fig. 4 are also provided with corresponding reference symbols.

[0075] In the roller rail 2 of the seventh embodiment shown, the recess 16 of the base body 15 is surrounded by the base body 15 along the longitudinal extent of the base body 15 by only one longitudinal side of the base body relative to the roller rail contact surface 17 (the longitudinal extent and the longitudinal side of the base body 15 extend in the Fig. 9 into the image plane and / or out of the image plane). Consequently, only on one long side of the main body (in the Fig. 9 the left longitudinal side relative to the hybrid roller) of the base body 15 at a relative to the roller rail contact surface 17 in the direction opposite to a rowing boat associated underside of the base body 15. In the Fig. In Figure 9, the lower end of the image corresponds to the side on which the roller rail 2 is arranged on a rowing boat. In the illustrated roller rail, the base body 15 extends, at least in sections, flat away from the roller rail contact surface 17. Alternatively or additionally, the base body 15 can also extend, starting from the roller rail contact surface 17, downwards from the roller rail contact surface 17 toward the underside of the base body 15 associated with a rowing boat. List of reference symbols 1 hybrid roll 1' Normal Roll 1'' roll 2 roller rails 3 bearing element 3' bearing element 4 roller bodies 4' reel body 5 outer section 6 inner section 7 Roller body contact surface 7' contact area 8 inner ring 8' inner ring 9 Outer ring 9' outer ring 10 rolling elements 10' rolling elements 11 Recess 12 lead 13 lead 14 Recess 15 basic bodies 16 Recess 17 Roller rail contact surface 18 Insert element 19 Recess 20 rolling seat 21 Seat element 22 front axle 23 Rear axle 24 frame element 25 through openings QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2012 206 670 A1 [0005, 0006]

Claims

[1] Hybrid roller (1) for a rolling seat (20) of a rowing boat, comprising: - a bearing element (3), and - a roller body (4), - wherein the roller body (4) surrounds the bearing element (3) at least in sections, - wherein the roller body (4) has an outer portion (5) and an inner portion (6), - wherein the outer portion (5) has a roller body contact surface (7) for at least partially contacting a roller rail (2) for a rowing boat, and - wherein the inner section (6) surrounds and / or contacts the bearing element (3) at least in sections, characterized by that the outer section (5), preferably the roller body contact surface (7), has at least in sections a higher modulus of elasticity than the inner section (6). [2] Hybrid roller (1) according to claim 1, characterized bythat the outer section (5), preferably the roller body contact surface (7), is made at least in sections from metal, preferably iron, steel and / or aluminum, and / or from ceramic and / or that the inner section (6) is made at least in sections from plastic, preferably polyoxymethylene, and / or metal, preferably aluminum. [3] Hybrid roller (1) according to claim 1 or claim 2, characterized bythat the widest section of the outer section (5) has a smaller width than the widest section of the inner section (6), that the widest section of the outer section (5) has an equal or smaller width than the narrowest section of the inner section (6), that the inner surface of the outer section (5) has a smaller width than the inner surface of the inner section (6) and / or that the inner surface of the outer section (5) has an equal or smaller width than the outer surface of the inner section (6). [4] Hybrid roller (1) according to one of claims 1 to 3, characterized bythat the outer section (5) and the inner section (6) are positively connected to one another, that the outer section (5), preferably the inner surface of the outer section (5), has at least one recess (13) and / or at least one projection for positively connecting to the inner section (6) and / or that the inner section (6), preferably the outer surface of the inner section (6), has at least one recess and / or at least one projection (13) for positively connecting to the outer section (5). [5] Hybrid roller (1) according to one of claims 1 to 4, characterized bythat the roller body (4), preferably the inner section (6), and the bearing element (3), preferably the outer ring (9) of the bearing element (3), are positively connected to one another, that the roller body (4), preferably the inner section (6), in particular the inner surface of the inner section (6), has at least one recess and / or at least one projection (12) for positively connecting to the bearing element (3), preferably the outer ring (9) of the bearing element (3), and / or that the bearing element (3), preferably the outer ring (9) of the bearing element (3), has at least one recess (11) and / or at least one projection for positively connecting to the roller body (4), preferably the inner section (6). [6] Rolling seat (20) for a rowing boat, comprising: - a seating element (21), and - a variety of roles (1, 1', 1"), characterized bythat at least one roller (1, 1"), preferably at least two rollers (1, 1"), more preferably at least three rollers (1, 1"), in particular at least four rollers (1, 1"), of the plurality of rollers (1, 1', 1") is each a hybrid roller (1) according to one of claims 1 to 5. [7] Rolling seat (20) according to claim 6, characterized by that at least one roller (1', 1"), preferably at least two rollers (1', 1"), more preferably at least three rollers (1', 1"), of the plurality of rollers (1, 1', 1") is each a normal roller (1'), that the normal roller (1') has a contact surface (7') for at least partially contacting a roller rail (2) for a rowing boat and that the contact surface (7') of the normal roller (1') is made at least partially from plastic, preferably polyoxymethylene and / or that the contact surface (7') of the normal roller (1') has a lower modulus of elasticity than the roller body contact surface (7) of the hybrid roller (1). [8] Rolling seat (20) according to claim 6 or claim 7, characterized by that the rolling seat (20) comprises: - at least one front axle (22) and / or at least one rear axle (23), - wherein at least two rollers (1, 1', 1") of the plurality of rollers (1, 1', 1") are arranged on the front axle (22) and / or at least two rollers (1, 1', 1") of the plurality of rollers (1, 1', 1") are arranged on the rear axle (23) and - wherein, preferably, the at least two rollers (1, 1', 1") of the front axle (22) are arranged at opposite end regions of the front axle (22) and / or the at least two rollers (1, 1', 1") of the rear axle (23) are arranged at opposite end regions of the rear axle (23). [9] Rolling seat (20) according to claim 8, characterized bythat at least one roller (1, 1"), preferably at least two rollers (1, 1"), of the front axle (22) is a hybrid roller (1), that at least one roller (1, 1"), preferably at least two rollers (1, 1"), of the rear axle (23) is a hybrid roller (1), that preferably at least one roller (1', 1"), preferably at least two rollers (1', 1"), of the front axle (22) is a normal roller (1') and / or that preferably at least one roller (1', 1"), preferably at least two rollers (1', 1"), of the rear axle (23) is a normal roller (1'). [10] Rolling seat (20) according to claim 8 or claim 9, characterized bythat at least one roller (1, 1") of the front axle (22) and at least one roller (1, 1") of the rear axle (23) are arranged on regions, preferably end regions, of the respective axle (22, 23), which are opposite one another, preferably relative to the direction of movement (B) and / or the axis of symmetry of the rolling seat (20), and are each hybrid rollers (1), and / or that at least one roller (1', 1") of the front axle (22) and at least one roller (1', 1") of the rear axle (23) are arranged on regions, preferably end regions, of the respective axle (22, 23), which are opposite one another, preferably relative to the direction of movement (B) and / or the axis of symmetry of the rolling seat (20), and are each normal rollers (1'). [11] Rolling seat (20) according to one of claims 6 to 10, characterized bythat at least one roller (1, 1', 1"), preferably at least two rollers (1, 1', 1"), in particular at least three rollers (1, 1', 1"), of the plurality of rollers (1, 1', 1") has a smaller diameter than at least one other roller (1, 1', 1") of the plurality of rollers (1, 1', 1") and / or that at least one normal roller (1') has a smaller diameter than at least one hybrid roller (1). [12] Roller rail (2) for a rowing boat, comprising: - a preferably elongated base body (15) with a recess (16), and - a preferably elongated roller rail contact surface (17) for at least partially contacting a roller (1, 1', 1") of a rolling seat (20) for a rowing boat, characterized bythat the roller rail contact surface (17) is made at least in sections from iron, steel and / or ceramic and / or that the roller rail contact surface (17) has at least in sections an E-modulus of at least 50 GPa, preferably at least 100 GPa, more preferably at least 150 GPa, more preferably at least 200 GPa, more preferably at least 250 GPa, in particular at least 300 GPa. [13] Roller rail (2) according to claim 12, characterized by that the roller rail contact surface (17) is formed at least in sections by at least one insert element (18) and that, preferably, the insert element (18) is inserted at least in sections into a recess (19) in the recess (16) of the base body (15) and / or the insert element (18) at least in sections covers the recess (16) of the base body (15). [14] Roller rail (2) according to claim 12 or claim 13, characterized bythat the roller rail contact surface (17) is at least partially curved and / or, preferably in the region of the insert element (18), is at least partially flat. [15] A rolling seat storage system for a rowing boat, comprising: at least one roller (1, 1', 1") for a rolling seat, preferably a hybrid roller (1) according to one of claims 1 to 5, at least one rolling seat (20) for a rowing boat, preferably a rolling seat (20) according to one of claims 6 to 11, and / or at least one roller rail (2) for a rowing boat, preferably a roller rail (2) according to one of claims 12 to 14.

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