EP3799936A1 - Appareil de sport - Google Patents

Appareil de sport Download PDF

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Publication number
EP3799936A1
EP3799936A1 EP19201411.6A EP19201411A EP3799936A1 EP 3799936 A1 EP3799936 A1 EP 3799936A1 EP 19201411 A EP19201411 A EP 19201411A EP 3799936 A1 EP3799936 A1 EP 3799936A1
Authority
EP
European Patent Office
Prior art keywords
shaft
lever
guide surface
torque
sports device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19201411.6A
Other languages
German (de)
English (en)
Inventor
Christian VON HEYNITZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technische Universitaet Muenchen
Original Assignee
Technische Universitaet Muenchen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technische Universitaet Muenchen filed Critical Technische Universitaet Muenchen
Priority to EP19201411.6A priority Critical patent/EP3799936A1/fr
Publication of EP3799936A1 publication Critical patent/EP3799936A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00—Exercising apparatus specially adapted for particular parts of the body
    • A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
    • A63B23/04—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs
    • A63B23/0482—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs primarily by articulating the hip joints
    • A63B23/0488—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs primarily by articulating the hip joints by spreading the legs
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/00185—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using resistance provided by the user, e.g. exercising one body part against a resistance provided by another body part
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/40—Interfaces with the user related to strength training; Details thereof
    • A63B21/4027—Specific exercise interfaces
    • A63B21/4033—Handles, pedals, bars or platforms
    • A63B21/4034—Handles, pedals, bars or platforms for operation by feet
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/40—Interfaces with the user related to strength training; Details thereof
    • A63B21/4027—Specific exercise interfaces
    • A63B21/4033—Handles, pedals, bars or platforms
    • A63B21/4035—Handles, pedals, bars or platforms for operation by hand
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/40—Interfaces with the user related to strength training; Details thereof
    • A63B21/4041—Interfaces with the user related to strength training; Details thereof characterised by the movements of the interface
    • A63B21/4045—Reciprocating movement along, in or on a guide
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/40—Interfaces with the user related to strength training; Details thereof
    • A63B21/4041—Interfaces with the user related to strength training; Details thereof characterised by the movements of the interface
    • A63B21/4047—Pivoting movement
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00—Exercising apparatus specially adapted for particular parts of the body
    • A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
    • A63B23/03516—For both arms together or both legs together; Aspects related to the co-ordination between right and left side limbs of a user
    • A63B23/03533—With separate means driven by each limb, i.e. performing different movements
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00—Exercising apparatus specially adapted for particular parts of the body
    • A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
    • A63B23/12—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles
    • A63B23/1245—Primarily by articulating the shoulder joint
    • A63B23/1254—Rotation about an axis parallel to the longitudinal axis of the body, e.g. butterfly-type exercises
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/06—User-manipulated weights
    • A63B21/062—User-manipulated weights including guide for vertical or non-vertical weights or array of weights to move against gravity forces
    • A63B21/0626—User-manipulated weights including guide for vertical or non-vertical weights or array of weights to move against gravity forces with substantially vertical guiding means
    • A63B21/0628—User-manipulated weights including guide for vertical or non-vertical weights or array of weights to move against gravity forces with substantially vertical guiding means for vertical array of weights

Definitions

  • the disclosed subject matter relates to a device for sports activities, in particular for the purpose of strength and / or fitness training.
  • a device is referred to herein as a sports device.
  • the subject matter relates to a mechanism or an arrangement for transmitting torque and / or rotational speed.
  • mechanisms such as a gear pairing, a cable pull or the like are used to transmit and / or distribute force components.
  • the cost, material and labor required to design and manufacture such mechanisms is relatively high.
  • Sports equipment can be suitable for receiving muscle strength.
  • the sports device can include a first shaft and a second shaft, at least one of the first shaft and the second shaft being driven by muscle power.
  • the first shaft and the second shaft can be arranged parallel to one another and at a fixed axial distance from one another.
  • the sports device can comprise a first lever which is connected in a rotationally fixed manner to the first shaft and has a curved guide surface.
  • the sports device can comprise a second lever which is connected to the second shaft in a rotationally fixed manner and has a rolling section.
  • the rolling portion of the second lever may be configured to roll on the guide surface of the first lever in response to pivotal movements of the first lever and the second lever.
  • the sports equipment as used herein can refer to any sports equipment that is used in the field of sports science, competitive sports, hobby sports and / or medicine including physiotherapy.
  • the sports device can in particular be a sports device for strength training, for fitness training and / or for therapeutic purposes.
  • muscle force as used herein can refer to any force directly or indirectly exerted by a user with his body. Muscle strength as used herein can be synonymous with physical strength.
  • the sports device can be set up so that the muscle power received is transmitted directly to the respective wave. This allows the respective shaft to be driven.
  • the drive can refer to a rotary or pivoting movement of the respective shaft about its own axis.
  • further components can be coupled between a contact point (explained in more detail below) for receiving muscle power and the respective shaft in order to determine a direction of the received muscle power, a strength of the received muscle power, a level of the speed of the movement exerted by the muscle power and / or to change a direction of the speed of the movement exerted by the muscle force for transmission to the respective shaft.
  • rotational movements and pivoting movements are used interchangeably and interchangeably in order to simplify the description.
  • the user can perform movements on the sports device using muscle power.
  • the structure and mode of operation (the mechanics) of the sports device can define movements that can be carried out on the sports device.
  • the movement on the sports device can relate to a movement with, on, against, through the sports device or in some other way with reference to the spot device.
  • the first shaft and / or the second shaft can be mounted in a stationary manner with respect to the sports device, i.e. they can be mounted in a stationary reference system of the sports device in a translationally immovable manner. Furthermore, apart from rotational movements about the respective main axis of rotation, the first shaft and / or the second shaft can be mounted in a rotationally immovable manner. In some examples, the first shaft and the second shaft can be movably mounted without changing the center distance. The center distance can denote a distance between axes of rotation of the first shaft and the second shaft. A resisting torque may be applied to the first shaft and / or the second shaft, as discussed below.
  • the first lever can be designed as a guide body.
  • the guide body can be partially, largely or entirely flat and expand in such a way that its expansion in width and length is many times greater than its thickness.
  • the guide body can be designed as a guide plate or a guide plate.
  • the guide body comprises the guide surface on or on one of its surfaces, for example on a side surface.
  • the second lever can be designed as an articulated arm and a roller rotatably mounted thereon, the roller forming the rolling section of the second lever.
  • both shafts collectively refer to the first shaft and the second shaft
  • both levers collectively refer to the first lever and the second lever.
  • first lever and / or the second lever can each have a physical section on which the respective shaft is mounted.
  • first lever and / or the second lever comprise a respective opening in which the respective shaft is received.
  • the opening can be a through hole or a blind hole.
  • the first shaft and / or the second shaft can be joined to the respective lever in a material, non-positive and / or form-fitting manner via a suitable connection process.
  • the rolling section of the second lever can be set up to roll on the guide surface of the first lever when the first lever and the second lever execute pivoting movements relative to one another.
  • the pivoting movements of the two levers relate in particular to their deflections and / or rotational speeds, unless otherwise stated.
  • the first lever and the second lever perform symmetrical movements, ie at the same rotational speeds and / or by the same deflections.
  • the rotational movements of the first shaft and the second shaft can be directed in opposite directions, that is to say vectorially opposite.
  • the rolling section of the second lever rolls on the guide surface of the first lever and transmits a torque to the second lever and thus to the first shaft and / or receives a torque from the first lever and passes it on to the second shaft.
  • a torque is transmitted between the two levers via the rolling section and the guide surface.
  • a torque on the first shaft and / or on the second shaft can be transmitted at least partially to the respective other shaft.
  • the guide surface of the first lever can be designed in particular taking into account structural and functional specifications of the sports device and individual requirements for the sports device.
  • a positive force coupling By rolling the rolling section of the second lever on the guide surface of the first lever, a positive force coupling can be provided between the two levers.
  • the positive force coupling thus relates to the transmission of a torque and / or a rotational speed between a (training) mechanism of the sports device and a drive that can be provided by the muscle power of a user and / or by a resistance force.
  • a positive force coupling By using a positive force coupling disclosed herein, vibration during operation of the sports device can be reduced or avoided. Furthermore, the wear can be reduced compared to the conventional force coupling mechanisms.
  • the sports device as described herein can be designed and manufactured in an energy and material saving, cost-effective and labor-efficient manner. Furthermore, the sports device can be adapted more easily to individual requirements and specifications relating to the mechanics of the sports device.
  • the positive force coupling can already be formed with sufficient accuracy during the design and manufacture, which reduces the work and costs involved in assembly. This also leads to a reduction in errors in the mechanics of the sports device, since human intervention for fine positioning and / or fine adjustment is not required, in contrast to conventional coupling mechanisms including gear and cable coupling.
  • other coupling mechanisms such as gear coupling or cable coupling (ie power coupling by means of a gear or cable) often require labor-intensive assembly on the respective device.
  • the design and manufacture of the sports device described herein can be simplified compared to devices with other coupling mechanisms with regard to the implementation of a precisely defined center distance.
  • the first lever and / or the second lever of the sports device described herein can be produced without machining and without thermal post-treatment including hardening.
  • the sports device described here can be designed and manufactured with a reduced expenditure of energy and work become.
  • the sports device can have low vibrations compared to other coupling mechanisms.
  • the sports device can be robust against wear and tear.
  • the sports device can be less susceptible to material fatigue under permanent as well as changing mechanical stress, in particular in comparison to a force coupling by means of a cable pull.
  • the sports device can furthermore be set up to provide a resistance force, so that a user can work against the resistance force using muscle power.
  • the resistance force can be provided in such a way that work is carried out against the muscle strength of the user.
  • the work done can be determined according to the teachings of engineering mechanics.
  • the resistance force can alternately actively drive the first shaft and / or the second shaft and provide a resistance for the movements carried out by the user. For example, this depends on a phase of the pivoting movement, e.g. on whether the levers move towards one another or move away from one another.
  • the sports device can be set up to provide a resistance force in such a way that it is always directed in the opposite direction to the muscle force to be received and / or that a suitable muscle force can be used against it in order to carry out controlled movements.
  • the sports device can in particular be set up to enable motion sequences in which work is performed alternately by the muscular strength of the user against the resistance of the sports device and by the resistance against the muscular strength of the user.
  • the sports device is set up for repetitive pivoting movements (such as butterfly movements), in which the resistance force acts alternately on the first wave and / or the second wave in a movement-inhibiting and movement-driving manner.
  • the sports device can be set up to change the direction and / or strength of the resistance force depending on the operating point.
  • the resistance force can be provided electrically or electromagnetically, e.g. by an electric motor, and / or gravimetrically, e.g. by a weight body.
  • an electric motor for providing the resistance force can be set up to be operated alternately as a motor and generator or as a countercurrent brake.
  • the drag force can be coupled to the first shaft and / or to the second shaft. In this way, a resistance torque can be applied to the respective shaft. This is explained in more detail below.
  • the resistance force can be transmitted directly to the respective shaft or further components such as sensors, a control circuit, a gear or a safety device can be coupled between the origin of the resistance force and the respective shaft.
  • the sports device can be set up to receive the muscle power along a trajectory that is defined by the structure and mode of operation of the sports device.
  • the sports device can be set up to receive muscle power which is exerted along a defined curved trajectory, a straight trajectory, an arc of a circle or a combination thereof.
  • the sports device can be set up to receive muscle power with varying strength and / or direction, for example by repeating back and forth movements.
  • the sports device is set up so that the user executes pivoting movements on the sports device along an arc, the first shaft and / or the second shaft forming a respective axis of rotation of the pivoting movements.
  • the first shaft and / or the second shaft can be configured to be rotated using muscle power.
  • the first shaft and / or the second shaft can be acted upon by the resistance force as described above and driven by it, so that a suitable muscle force can be used against the resistance force in order to execute controlled movements, active or inhibiting against the resistance force.
  • the muscle force executed along a circular arc can be received as a corresponding torque via a respective lever arm.
  • the sports device can be set up to convert muscle force exerted along a non-circular arc-shaped trajectory into a corresponding torque on the respective shaft.
  • a suitable force coupling for example by lever arms, can convert the muscle power into a corresponding torque on the first shaft and / or on the second shaft.
  • the sports device can be set up to receive the muscle power at several contact points.
  • the sports device can be set up to receive muscle force exerted by two body parts of a user at respective contact points.
  • the term body part as used herein relates, for example, to the left arm, the right arm, the left leg, the right leg, the left shoulder, the right shoulder, the upper body and / or the lower body of the user. This means that several muscle forces can be received at the same time.
  • the muscle force can be exerted at one or some of the multiple contact points of the sports device.
  • the point of contact as used herein can refer to a physical body capable of receiving and transmitting muscle power.
  • the contact point is realized by a support such as a cushion, a lever arm, a handle, a stop surface, the like or a combination thereof.
  • the sports device can be suitable for receiving muscle forces that a user exerts during a movement that is symmetrical with respect to the user's body.
  • the sports device is set up in such a way that the user executes a right-handed (in the sense of the direction of rotation with respect to the associated axis of rotation) pivoting movement and a left-handed pivoting movement at the same time.
  • the sports device can be suitable for receiving muscle power that a user exerts with his left arm and his right arm (and / or with his left leg and his right leg) simultaneously and with mirror symmetry.
  • the sports device can be set up so that deflections of the two pivoting movements from their respective rest position are at least partially mirror-symmetrical (in relation to the deflection).
  • the sports device is suitable for torques on both sides to be at least partially balanced out against one another.
  • the first shaft and / or the second shaft can have a respective resistance torque applied to it.
  • the resistance torque can be configured to be directed in the opposite direction to a received muscle force.
  • the sports device can be operated in a resistance mode in which the resistance torque is provided in such a way that it is directed in the opposite direction to a direction of movement of the respective shaft when the respective shaft is rotated by the muscular strength of the user.
  • the sports device can be operated in a drive mode in which the drag torque is provided in such a way that it is aligned with the direction of movement of the respective shaft, i.e. to drive the respective shaft.
  • the resistance mode and the drive mode can be carried out alternately. For example, a change between the resistance mode and the drive mode can take place depending on the type of exercise and / or movement phase of the user.
  • the strength of the drag torque can vary depending on the phase of movement as described above.
  • the drag torque can originate from or be provided by the drag force described above.
  • the drag torque can act on the first shaft or on the second shaft. Additionally or alternatively, a respective resistance torque can act on both shafts, wherein the individual resistance torques can be the same or different.
  • the drag torque can be coupled coaxially to the first shaft and / or to the second shaft.
  • the term “equally large” in connection with angular displacement, rotational speeds and torques relates to the absolute value of the respective variable regardless of the directions, unless otherwise stated.
  • the terms “equal in size” and “equal in amount” can be used interchangeably and with the same meaning.
  • the sports device can be set up in such a way that work is carried out when the user executes movements with the use of muscle strength against the resistance torque.
  • the sports device can be set up in such a way that a torque that is generated by a movement using muscle power and the drag torque are at least partially transmitted between the first shaft and the second shaft by the rolling portion of the second lever on the guide surface of the first lever the lever rolls in response to pivoting movements.
  • the direction and / or the strength of the drag torque can be variable.
  • the direction and / or the strength of the drag torque can be variable depending on the sequence of movements and / or the operating point of the sports device.
  • the direction and / or the strength of the drag torque are variable as a function of a deflection of the first shaft and / or the second shaft.
  • the sports device is set up to provide a constant drag torque, a partially incrementing drag torque and / or a partially decrementing drag torque, to convey constant rotational speeds on both sides (i.e. isokinematic movements) or a combination thereof.
  • an electric or electromagnetic drive, a control unit, a sensor system, a transmission, the like or a combination thereof can be used.
  • the drag torque can be provided by an electric motor.
  • the electric motor provides an electric or electromagnetic drive.
  • the electric motor can transmit the drag torque in the form of mechanical power to the respective shaft.
  • a gravimetric element such as a weight body can at least partially provide the drag torque.
  • the drive by means of an electric motor can be more cost-effective and space-saving and have the advantage that it can be controlled.
  • Several electric motors can be used in the sports device.
  • the electric motor can be coupled coaxially to the first shaft and / or the second shaft.
  • a control unit, a sensor system, a transmission, the like or a combination thereof can be mechanically and / or electrically coupled to the electric motor.
  • the electric motor can be controlled in such a way as to control the direction and / or the strength of the drag torque accordingly.
  • the electric motor can be controlled in such a way as to provide a constant drag torque, a partially incrementing drag torque and / or a partially decrementing drag torque, to convey constant rotational speeds on both sides (ie isokinematic movements) or a combination of these.
  • the electric motor can be controlled as described above.
  • the resistance torque is set up such that a first transmission torque that is transmitted from the first shaft to the second shaft and a second transmission torque that is transmitted from the second shaft to the first shaft are equal in magnitude.
  • the curved guide surface of the first lever can also be designed in such a way that the first transmission torque and the second transmission torque are in equilibrium with one another.
  • the curved guide surface can be designed (configured) in such a way that the first transmission torque and / or the second transmission torque are transmitted in a form-fitting manner.
  • the equilibrium of the torques on the shafts can in particular be established according to the principle of actio equals reactio.
  • the guide surface of the first lever can be constructed according to the lever law from technical mechanics and manufacturing technology. For example, when designing the guide surface, it can be assumed that there is an equilibrium between the torques on the two levers.
  • a first torque generated by muscle power and / or a resistance torque which is directed opposite to the first torque act on the first shaft.
  • a difference in the torques that act on the first shaft can be transmitted as a first transmission torque to the second shaft via the above-described positive coupling of the first lever and the second lever.
  • the same or similar can apply to the second wave.
  • a second torque and / or a resistance torque generated by muscle power, in addition to or as an alternative to the resistance torque on the first shaft, can act on the second shaft.
  • a difference in the torques acting on the second shaft can be transmitted to the first shaft as a second transmission torque via the positive coupling of the first lever and the second lever described above.
  • the first transmission torque and the second transmission torque can be of the same magnitude.
  • one or more resistance forces or one or more resistance torques can be set in such a way that this framework condition is met. Due to the positive coupling described herein, the direction of the transmission torque can be reversed and the transmission torques can be directed in opposite directions. Thus, left-handed torque on one shaft can be received as right-handed torque on the other shaft, and vice versa.
  • a user's muscle forces on his left side and be of different strength on its right side, so that a first torque on the first shaft and a second torque on the second shaft are different.
  • the resistance torque can act on the first shaft and / or on the second shaft.
  • the sports device can provide the resistance force or the resistance torque in such a way that the differences in the torques on the first shaft and on the second shaft are in equilibrium.
  • the equilibrium can in particular be established according to the principle of actio equals reactio.
  • the sports device is set up to receive a first torque on the first shaft and a second torque on the second shaft.
  • the first torque and the second torque are anti-parallel.
  • the sports device is set up to set the drag torque so that it counteracts the first torque and the second torque.
  • a drag torque is provided on one of the two shafts.
  • an electric motor can be mounted on / on one of the shafts and couple mechanical power to the respective shaft.
  • the drag torque can be distributed between the two shafts in such a way that one component of the drag torque acts against the torque received on the first shaft and another component of the drag torque acts against the torque received on the second shaft.
  • An electric motor as explained above can be controlled accordingly and for this purpose electrically or mechanically coupled with a sensor system for detecting received torques on the two shafts and rotational speeds of the two shafts, a gearbox for adjusting rotational speed and / or torque, a control unit and the like be.
  • the guide surface of the first lever is curved in such a way that a rotational speed at which the first shaft or the second shaft rotates is transmitted anti-parallel to the respective other shaft.
  • a first deflection of the first lever and a second deflection of the second lever are equal.
  • the deflections designate, for example, a respective deflection angle with respect to a connecting line between axes of rotation of the first shaft and the second shaft.
  • the requirement that the deflections of the two levers are equal can be in one or both directions due to the structure and mode of operation of the sports equipment be limited. This can be included as a condition in a corresponding calculation.
  • the first lever can be designed as a guide body, for example guide plate or guide plate
  • the second lever can be designed as an articulated arm with a roller.
  • the first shaft and the second shaft are fixedly attached to / on the sports device.
  • the center distance between the first shaft and the second shaft cannot be changed, especially when the two levers pivot.
  • the stationary arrangement of the first shaft and the second shaft on / on the sports device can relate to a translationally immovable and stationary mounting of the shafts in a stationary reference system of the sports device.
  • the first shaft and / or the second shaft can be mounted in a rotationally immovable manner with the exception of rotary movements about their respective main axis of rotation.
  • the center distance which, as discussed above, denotes a distance between the axes of rotation of the first shaft and the second shaft, is a constant in time and space.
  • the center distance can be defined by the structure and functionality of the sports equipment. In some examples, the center distance is due to a usual distance between the relevant joints of a human body.
  • the second lever has an articulated arm and a roller.
  • the roller is rotatably mounted on / on the articulated arm, so that a distance between the axes of rotation of the second shaft and the roller cannot be changed.
  • the roller can form the rolling section and be designed to roll on the guide surface while the first lever and the second lever execute movements relative to one another.
  • the roller can be configured to transmit a torque to the first lever and / or to receive a torque from the first lever when it rolls on the guide surface of the first lever.
  • the articulated arm provides a physical body for the second lever that is rotatably mounted on / on the second shaft.
  • the articulated arm is made of a metal, including steel and alloy, and / or synthetic materials.
  • the articulated arm can be designed as a sheet metal part, a metal plate or the like.
  • the articulated arm can be produced, for example, by laser cutting, water jet cutting, machining, reshaping or primary shaping manufacturing processes.
  • the role can be fixedly attached to / on the articulated arm, any tolerances and / or any play having to be taken into account.
  • the role can be partially in that Articulated arm to be added.
  • the articulated arm can have an axis on / on which the roller is mounted.
  • the roller is made of, for example, a metal including steel and alloy, and / or synthetic materials.
  • the roller can be designed as a metal roller, a plastic roller or the like.
  • the roller can have a cylindrically symmetrical shape about a cylinder axis and can be configured to rotate about the cylinder axis.
  • the roller can have a circumferential surface that is flat and parallel to the cylinder axis or can have one or more curvatures, recesses or projections.
  • the roller can have a continuous recess in the circumferential direction for receiving a corresponding projection on the guide surface in order to be guided along the guide surface.
  • the first lever is designed as a guide body, for example as a guide plate or a guide plate, with a side surface.
  • the side surface of the guide plate can comprise the guide surface.
  • the guide surface can be designed and / or arranged without any curvature along or in the direction of an axis of rotation of the first shaft.
  • the curved surface can be arranged flat and parallel to the axis of rotation of the first shaft. Consequently, the positive force coupling between the first lever and the second lever can take place in directions which are always perpendicular to the axis of rotation of the first shaft.
  • the side surface of the guide plate can be formed at least in sections or completely free of curvature along an axis of rotation of the first shaft.
  • the curved surface thus has no curvatures along an axial direction of the second shaft.
  • a circumferential surface of the rolling section of the second lever can be formed and / or arranged at least partially parallel to the curved surface. Furthermore, as described above, the guide surface can have a projection for guiding the rolling section, which projection is received in a recess on the circumferential surface of the rolling section.
  • the guide surface can occupy a portion of the side surface of the guide body.
  • the guide body can be designed as desired, as long as the non-rotatable connection between the guide surface and the first shaft is ensured and the first lever is rotatably mounted on / on the first shaft.
  • the first lever can be connected to the first shaft in a rotationally fixed manner.
  • the first lever may include a groove formed along the curved guide surface.
  • the rolling section can be movably mounted in the groove. This can contribute to the fact that the rolling section rests against the guide surface or at least moves close to the guide surface.
  • the sports device can be set up in such a way that the user performs back and forth movements.
  • the groove can serve to guide the rolling section (close to) the guide surface, in particular when the direction of movement of the user is reversed. Furthermore, the groove can serve to guide the rolling section even in the event of a sudden change in the movement of the user (close to) the guide surface.
  • the first lever has a further guide surface which is spaced apart from the guide surface.
  • the rolling section of the second lever is movably supported between the guide surface and the further guide surface of the first lever.
  • the further guide surface is designed in such a way that the rolling section rolls on the guide surface or on the further guide surface, depending on the direction in which the muscle force acts.
  • the rolling section rolls on the guide surface when the muscle force acts in such a way that the first lever and / or the second lever execute pivoting movements in a respective first direction.
  • the rolling section can roll on the further guide surface when the muscle force acts in such a way that the first lever and / or the second lever execute pivoting movements in a respective second direction which is opposite to the respective first direction.
  • the muscle force can be exerted when executing a butterfly movement and / or when executing a reverse butterfly movement.
  • the further guide surface can serve to guide the rolling section close to the guide surface in order, for example, to prevent the first shaft and the second shaft from hitting one another, which can occur in particular during start-up, when a movement is ended or when an asymmetrical movement is carried out.
  • the guide surface and the further guide surface can be arranged opposite one another.
  • the guide surface and the further guide surface can be spaced apart from one another by a gap in which the roller section is movably supported.
  • the guide surface and the further guide surface can accordingly be arranged at least in sections parallel to one another and parallel to one of the or both axes of rotation of the first shaft and the second shaft.
  • the guide surface and the further guide surface are arranged in such a way that they form a groove.
  • the groove can be designed as described above.
  • the groove can be open at both ends.
  • a positive force coupling can be provided both between the rolling section of the second lever and the guide surface and between the rolling section and the further guide surface.
  • a torque acts on the first shaft and / or the second shaft in a respective first direction of the shafts due to the muscle power and / or the resistance force (or the corresponding resistance torque).
  • the rolling section rolls on the guide surface and thus transmits a torque to the first lever or receives a torque from the first lever via the guide surface.
  • a force transmission between the first lever and the second lever (and thus between the first shaft and the second shaft) can take place via the guide surface.
  • the rolling section rolls on the further guide surface when a torque acts on the first shaft and / or the second shaft in a respective second direction opposite to the first direction.
  • a corresponding transmission of force between the first lever and the second lever can take place via the further guide surface.
  • the first lever is designed in the shape of a rail along the guide surface.
  • the rail-shaped first lever is designed in such a way that a first guide surface and a second guide surface are each formed along the guide surface.
  • the rolling portion of the second lever has a first roller and a second roller. The first roller is set up to roll on the first guide surface. The second roller is set up to roll on the second guide surface.
  • first guide surface and the second guide surface are spaced apart from one another by the spatial extension of the rail-shaped first lever.
  • the first guide surface and the second guide surface can be spaced from one another in any spatial direction.
  • the first lever has two major surfaces that are perpendicular to the axis of rotation of the first shaft, and the two guide surfaces connect the major surfaces of the first lever.
  • the first guide surface and / or the second guide surface can be designed and arranged as described above.
  • the first guide surface corresponds to the guide surface of the first lever, and the second guide surface is designed and / or arranged at a distance therefrom.
  • the second is the same Guide surface of the guide surface of the first lever, and the first guide surface is formed and / or arranged at a distance therefrom. Due to the geometry of the first lever and the second lever, the first guide surface and the second guide surface may not be parallel to one another.
  • the guide surface has different radii of curvature along the line of curvature in a projection parallel to an axis of rotation of the first shaft. All centers of curvature lie on the same side of the guide surface.
  • Such a first lever or such a guide surface can be easy to manufacture.
  • the guide surface can in particular be continuously curved.
  • the guide surface is constructed in such a way that the curvature along the guide surface changes, but without being zero.
  • the curvature as used herein relates, for example, to a projection along the axes of rotation of the first shaft and the second shaft.
  • the first lever can be designed as a guide body, as described above, and have a side surface which in sections encompasses the guide surface. The remaining side surface of the first lever can be designed as desired, for example without a curvature or with a different curvature than the guide surface.
  • the first lever and the second lever are arranged offset from one another along a respective axis of rotation of the respective shaft.
  • the second shaft is arranged on a side of the second lever opposite the first lever.
  • the first lever and the second lever are arranged vertically offset. Unless otherwise stated, the term vertical refers to directions along a respective axis of rotation of the respective shaft.
  • the staggered arrangement of the two levers can enable the second shaft, in a projection along an axis of rotation of the second shaft, to traverse the physical body of the first lever.
  • a range of motion of the first lever and / or of the second lever can be expanded.
  • the maximum deflections of the first lever and / or of the second lever can be expanded as a result.
  • first shaft can be arranged on a side of the first lever facing the second lever.
  • the second lever can have a radial extension with respect to the axis of rotation of the second shaft in such a way that it does not collide with the first lever. In other words, the second lever can be short enough so that there is no risk of the second lever colliding with the first shaft.
  • a line of curvature of the guide surface is determined as a function of a parameterized deflection of the second shaft with respect to a connecting line between the axes of rotation of the first shaft and the second shaft.
  • the center distance, a distance between the axis of rotation of the second shaft and an axis of rotation of the rolling section and a rolling radius of the rolling section are taken into account as constants.
  • a respective force application point between the rolling section and the guide surface is determined for various parameterized deflections in order to obtain several force application points.
  • the force application points are linked to one another in a fixed coordinate system of the first lever in order to produce the line of curvature of the guide surface.
  • a deflection of the first lever relative to the connecting line is the same as the deflection of the second lever.
  • the guide surface or its line of curvature is constructed on the basis of the lever law from technical mechanics. According to the principle of actio equals reactio, transmission torques between the first lever and the second lever can always be assumed to be the same in both directions.
  • the torque acting on the first shaft and / or on the second shaft can optionally be variable over time.
  • the deflections of the two levers can be assumed to be mirror-symmetrical to one another and / or to be of the same size in order to ensure mirror-symmetrical movements of the two levers.
  • the deflection of the first lever and the deflection of the second lever are mirror-symmetrical to one another with respect to a plane which is perpendicular to the connecting line between the axes of rotation of the two shafts.
  • the deflections of the two levers can, however, be defined as desired in the construction, so that the movements of the two levers may not be symmetrical with respect to the perpendicular perpendicular to the connecting line.
  • the center distance between the axes of rotation of the two shafts, a distance between the axis of rotation of the second shaft and the axis of rotation of the rolling section and the rolling radius of the rolling section of the second shaft are taken into account as further constants as further framework conditions for the construction of the guide surface.
  • At least one of these constants can be defined by specifications of the associated sports device. At least one of these constants can be decisively determined by the mechanics, ie the structure and mode of operation, of the sports device.
  • An arrangement for the transmission of a torque and / or a rotational speed between two shafts arranged in parallel is also disclosed.
  • the arrangement can provide at least part of a transmission or a transmission.
  • the first shaft and / or the second shaft can be designed to be driven by muscle power.
  • the first shaft and the second shaft are arranged parallel to one another and at a fixed axial distance from one another.
  • the first shaft is non-rotatably connected to a first lever.
  • the second shaft is rotatably connected to a second lever.
  • the first lever has a curved guide surface.
  • the second lever has a rolling portion that is configured to roll on the guide surface of the first lever in response to pivoting movements of the first lever and the second lever to at least partially apply a torque acting on the first shaft or the second shaft to transmit the other wave.
  • the arrangement can be implemented in the sports device described above.
  • a method for constructing such an arrangement is also disclosed. Accordingly, the center distance between the axes of rotation of the shafts, a distance between the axis of rotation of the second shaft and an axis of rotation of the rolling section of the second lever and a rolling radius of the rolling section are received as design constants.
  • the general condition applies that deflections of the two levers are of the same size and / or are mirror-symmetrical to one another.
  • a framework condition can be that one or more resistance torques are provided in such a way that a first transmission torque from the first lever to the second lever and a second transmission torque from the second lever to the first levers are the same size. It can thus be assumed that a force vector which is volatile with a normal force which acts from the first lever on the second lever or vice versa through a force application point between the rolling section and the guide surface, at any point in time through a center point of the connecting line between the axes of rotation of the both waves runs.
  • the guide surface of the first lever is constructed using a parameterized representation of the deflection of the second lever, and thus also of the first lever.
  • the respective maximum deflections of the second lever can be determined for both pivoting directions, which can be caused by the specifications of the sports device.
  • different deflections of the second Lever determines the points of intersection of a straight line or a family of straight lines with a circumferential surface of the rolling section.
  • intersection points determined in this way represent force application points between the rolling section and the guide surface.
  • a coordinate transformation is carried out from a laboratory system to a stationary reference system of the first lever.
  • the force application points and the respective deflections of the first lever are correlated in the fixed reference system of the first lever in order to connect the force application points to form a continuous curve of the guide surface.
  • the object described can be suitable for uniformly transmitting and / or distributing torques and rotational speeds between two shafts.
  • a uniform or symmetrical transmission of torques and rotational speeds between two shafts can be particularly advantageous for sports equipment.
  • the method described herein can be suitable for providing the sports device described above.
  • the arrangement described herein and the method of construction thereof can be transferred to devices in other technical fields which use a uniform or symmetrical transmission of torques and rotational speeds between two shafts.
  • the technical effects and advantages of the arrangement and its construction method can be given as discussed above or result from it.
  • FIG. 3 schematically shows an example of a sports device 100 which is set up to receive muscle power of a user by means of a symmetrical pivoting movement of a left body part and a right body part.
  • the sports device 100 enables a user to exercise a left body part and a corresponding right body part (eg arms, legs, shoulders, etc.) individually and / or symmetrically.
  • the sports device 100 can have the structure and functionality described above, unless otherwise specified.
  • the sports device 100 has a seat 102 on which a user (not shown) can sit.
  • the sports device is designed in such a way that the user can execute a pivoting movement with a left body part and a right body part simultaneously or individually. When executing the pivoting movement, the user exerts muscle power through, against or on the sports device 100.
  • the seat 102 is an example. In further examples, not shown, depending on the structure and mode of operation of the sports device 100, the seat 102 can be replaced by a cushion or even omitted, so that the user executes the movements mentioned while standing.
  • the sports device 100 comprises a plurality of contact points 104 on both sides, on which the respective body parts of the user can apply.
  • the user can apply muscle force to one or more of the contact points 104.
  • the contact points 104 each comprise two handles and a pad on both sides.
  • the contact points 104 are formed symmetrically on both sides.
  • the pages relate to the left side and the right side of the respective sports device in the orientation shown in the drawings and refer to a center plane between the left and right in the respective drawings.
  • the seat 102 is arranged so that the right side of the user's body (not shown) on the left and the left side of the user's body on the right in the drawing. In other examples, the alignment can be changed as desired.
  • the sports device 100 comprises a first lever arm 106 on one side and a second lever arm 108 on the other side.
  • the muscle force of the user received at the force application points 104 is transmitted to the lever arms 106, 108.
  • the muscle force causes the lever arms 106, 108 to move from their respective rest positions, which are shown in FIG FIG. 1 shown in solid lines, are moved in the direction of their respective pivot positions shown in FIG FIG. 1 are shown with dashed lines. Consequently, the user exercises muscle force, for example with his arms or with his legs, in order to move the lever arms 106, 108 towards one another. These and opposite movements are indicated by arrows B.
  • FIG. 1 In the FIG.
  • the rest position shown and the pivot position as well as the relative arrangement of the seat 102 and the lever arms 106, 108 to one another are exemplary. In further examples, depending on the structure and mode of operation of the sports device 100, the rest position and the pivot position opposite FIG. 1 and the relative arrangements of the components of the sports device 100 can be interchanged or changed.
  • the sports device 100 further comprises a first shaft 110 and a second shaft 112.
  • the first shaft 110 is connected in a rotationally fixed manner to the first lever arm 106, so that the first shaft 110 can be rotated by pivoting movements of the first lever arm 106, and a torque is applied to the first Shaft 110 acts on the first lever arm 106 in the same way.
  • the second shaft 112 is non-rotatably connected to the second lever arm 108 in order to be rotated by its pivoting movements, and a torque on the second shaft 112 acts in the same way on the second lever arm 108.
  • a respective axis of rotation 114, 116 of the shafts 110, 112 is in FIG. 1 indicated with a dashed cross.
  • the shafts 110, 112 are shown in a plan view in such a way that they are arranged below or above the seat 102. In other examples, one or both of the shafts 110, 112 may be disposed outside of the seat 102 in a plan view.
  • the size of the seat 102 and the distance between the shafts 110, 112 of the FIG. 1 are schematic and exemplary. These parameters are determined in particular by the structure and mode of operation of the sports device 100.
  • the sports device 100 can provide a resistance force (not shown) which is directed against the movements B.
  • the drag force may be coupled to the first shaft 110, the second shaft 112, or both in the form of drag torques.
  • the resistance force can be provided by an electric motor (not shown), which couples a mechanical power coaxially to the first shaft 110 and / or to the second shaft 112.
  • the user exerts muscle power to move the lever arms 106, 108 to move against the resistance force.
  • the user works against the resistance force or the resistance force works against the muscle power of the user.
  • the resistance force and the electric motor can be configured as described above.
  • the sports device 100 can be set up in such a way that the user moves the lever arms 106, 2018 at the same rotational speeds and / or mirror-symmetrical deflections on both sides.
  • the muscle force can be exerted at the respective contact points 104 and transmitted to the respective lever arm 106, 108.
  • the muscle force exerted on the first lever arm 106 generates a torque on the first shaft 110.
  • the muscle force exerted on the second lever arm 108 generates a torque on the second shaft 112.
  • the sports device 100 is set up to transmit torque between the two shafts 110, 112 via the positive coupling described herein, with a first transmission torque from the first shaft 110 to the second shaft 112 and a second transmission torque from the second shaft 112 to the first shaft 110 are transmitted, and the first transmission torque and the second transmission torque are equal.
  • the sports device thus brings about a balance of the torques between those of the first shaft 110 and the second shaft 112.
  • the torques acting on the first shaft 110 and on the second shaft 112 can be directed in opposite directions, depending on the structure and mode of operation of the sports device 100.
  • the sports device 100 is set up to couple the pivoting movements of the two levers 106, 108, i.e. their deflections and / or rotational speeds, to one another. Accordingly, the lever arms 106, 108 can be coupled to one another in such a way that pivoting movements of the first lever arm 106 move the second lever arm 108 in each case in the opposite direction and vice versa.
  • the sports device 100 can have the mechanism described above, in particular the transmission described above, in order to transmit the aforementioned variables via a form-fitting force coupling by rolling a rolling section of one of the lever arms 106, 108 on a guide surface of the other lever arm 106, 108.
  • FIG. 2 illustrates an arrangement 200 that provides at least a portion of a transmission or a transmission.
  • the assembly 200 may be equivalent to a transmission 200.
  • the arrangement 200 can be used in the sports device 100 in FIG FIG. 1 be used.
  • the arrangement 200 provides a positive force coupling between two shafts as described above.
  • the same reference symbols are used to identify the same or at least related functional and structural features.
  • the arrangement 200 comprises a first lever 202 and a second lever 204.
  • the first lever 202 is designed as a guide body 202 with a curved guide surface 206.
  • the first lever 202 is connected non-rotatably to a first shaft 110.
  • the second lever 204 comprises an articulated arm 208 on / on which a roller 210 is rotatably mounted.
  • the roller 210 has a rolling radius R (see FIG. 3 ) between its axis of rotation 212 and its circumferential surface and forms a rolling section of the second lever 204.
  • the second lever 204 is connected to a second shaft 112 in a rotationally fixed manner.
  • FIG. 2 The respective axes of rotation 114, 116, 212 of the first shaft 110, the second shaft 112 and the roller 210 are shown in FIG FIG. 2 each illustrated by a dashed cross.
  • the shafts 110, 112 are mounted in a stationary manner such that a distance A between their axes of rotation 114, 116, ie the center distance A, cannot be changed.
  • the shafts 110, 112 of the FIG. 2 can correspond to the shafts 110, 112 of the example of FIG FIG. 1 correspond, it being possible for the sides, ie the assignment of the reference numerals 110 and 112, to be interchanged.
  • levers 106, 108 and shafts 110, 112 including guide surface 206 and roller 210 are as described above, unless otherwise specified. Accordingly, the guide surface 206 is designed in such a way that the roller 210 rolls on the guide surface 206 when the levers 202, 204 execute pivoting movements, which are illustrated by the arrows W on the respective shafts 110, 112.
  • the rolling motion of roller 210 is in FIG. 2 illustrated by an arrow V.
  • torques for example in the form of transmission torques (shown schematically by arrow T in FIG. 2 ), transferred between the roller 210 and the guide surface 206.
  • the direction of movement and the direction of the muscle force received determine in which direction, ie against the resistance force or against the muscle force, work is carried out.
  • a clockwise first torque acts on the first shaft 110 and a counterclockwise second torque acts on the second shaft 112, in the orientation of FIG FIG. 2 .
  • the first torque and the second torque correspond to the torque generated by the respective muscle power. This causes the first lever 202 and the second lever 204 to be in the alignment of the FIG. 2 move down.
  • the roller 210 rotates clockwise about its own axis of rotation 212 and rolls on the guide surface 206.
  • the resistance torque can be provided in such a way that it is directed in the opposite direction to the directions of movement of the two levers 202, 204 or the directions of movement of the two shafts 110, 112.
  • the user does work against the resistance torques.
  • This operation can correspond to the resistance mode described above.
  • resistance torques can act on the first shaft 110 and on the second shaft 112 in order to move the two levers 202, 204 in the corresponding directions.
  • the user can exert muscle power against the resistance torques, so that work is performed against the muscle power (in the sense of technical mechanics). This operation can correspond to the drive mode described above.
  • a torque transmission takes place between the two shafts 110, 112 according to the principle of actio equal reactio.
  • the resistance torque (s) is / are also provided on the first shaft 110 and / or on the second shaft 112 in such a way that the first transmission torque and the second transmission torque are in equilibrium.
  • a positive force coupling or positive torque coupling between the first shaft 110 and the second shaft 112 is provided by the rolling of the roller 210 of the second lever 204 on the guide surface 206 of the first lever 202.
  • the guide surface 206 is specially designed for the arrangement 200 taking into account design parameters.
  • the design parameters can in particular include the center distance A, a distance L between the axes of rotation 114, 116 of the second shaft 112 and the roller 210 and the rolling radius of the roller 210.
  • FIG. 3 illustrates the calculation of the guide surface 206.
  • the center distance A between the axes of rotation 114, 116 of the shafts 110, 112, the distance L between the axis of rotation 116 of the second shaft 112 and the axis of rotation 212 of the roller 210 of the second lever 204 and the rolling radius R of the roller 210 are taken into account as construction constants and form the first framework conditions.
  • a further framework condition is given by the requirement of synchronous pivoting movements of the two shafts 110, 112.
  • the deflections of the two levers 202, 204 are represented by a respective angular offset D with respect to a connecting line 302 between the axes of rotation 114, 116 of the shafts 110, 112.
  • the deflections D are the same size on both sides, i.e. for both shafts 110, 112, and are mirror-symmetrical to one another with respect to a perpendicular perpendicular to the connecting line 302 (not shown).
  • the deflection D of the first lever 110 and / or of the second lever 112 is limited in both pivoting directions.
  • the limitation can take place, for example, by an end stop or a plurality of end stops for the roller 210.
  • the maximum deflections can be determined by specifications of the individual application of the arrangement 200 or of the sports device 100 in which the arrangement 200 is used.
  • the first lever 202 has a blind section 306 in which the guide surface 206 does not extend, ie in which the guide surface 206 is not formed. Consequently, the guide surface 206 extends from a transition section 308 to an end section 310.
  • the distance of the transition section 308 from the axis of rotation 114 of the first shaft 110, ie a length of the blind section 306, can be selected appropriately, in particular taking into account the center distance A , the distance L and the rolling radius R.
  • the blind portion 306 is formed in a straight line.
  • the blind section 306 can be shaped as desired, provided that a direct transmission of force, torque and movement between the guide surface 206 and the first shaft 110 is guaranteed.
  • Another general condition is given by the requirement of uniform torque distribution on the two shafts 110, 112. Accordingly, there is a first transmission torque from the first shaft 110 to the second shaft 112, and thus from the first lever 202 to the second lever 204, and a second transmission torque from the second shaft 112 to the first shaft 110, and thus from the second lever 204 on the first lever 202, equal in amount.
  • This framework condition results in a straight line or a family of straight lines K, which runs through a respective force application point between the roller 210 and the guide surface 206 and through a center point 304 of the connecting line 302.
  • the straight line or family of straight lines K is always volatile with an imaginary normal force that acts between the first lever 202 and the second lever 204.
  • the deflections D of the levers 202, 204 are parameterized.
  • a course of the guide surface 206 is calculated as a function of the parameterized deflections D.
  • several different deflections D of the second lever 204 are determined according to the parameterization, and a respective intersection point S of a straight line or a family of straight lines K with a circumferential surface of the roller 210 for the individual deflections D des second lever 204 determined.
  • intersection points determined in this way correspond, under the aforementioned framework conditions, to force application points between the roller 210 of the second lever 204 and the guide surface 206 of the first lever 202.
  • the intersection points as described herein can be numerically as discrete positions in space and / or analytically as a continuous curve or continuous Area, for example according to an infinitesimal consideration, can be determined.
  • a coordinate transformation is carried out from a laboratory system (i.e. an inertial system or a stationary system of the arrangement 200 or of the sports equipment 100, if applicable) to a stationary reference system of the first lever 202.
  • the force application points and the respective deflections D of the first lever 202 are correlated in the stationary reference system of the first lever 202 in order to connect the force application points to form a continuous curve of the guide surface 206.
  • FIG. 4A and 4B show the assembly 200 in various positions. As noted above, the arrangement 200 in the sports device 100 of FIG. 1 be used.
  • FIG. 4A the arrangement is in a position in which the axis of rotation 116 of the second shaft 112 is partially enclosed by the guide surface 206 of the first lever 202.
  • FIG. 4B the arrangement is in a different position in which the axis of rotation 116 of the second shaft 112 is arranged outside the guide surface 206 and outside the first lever 202, based on its curvature.
  • FIG. 4A a rest position
  • FIG. 4B a pivoted position of the arrangement 200, or vice versa.
  • first lever 202 and the second lever 204 are arranged vertically offset, with vertical along the axis of rotation 114 of the first shaft 110 and / or along the axis of rotation 116 of the second shaft 112.
  • the second shaft 112 is arranged on a side of the second lever 204 opposite the first lever 202, i.e. on the side of the second lever 204 facing away from the first lever 202.
  • Such an arrangement enables the first lever 202 and / or the second lever 204 to execute pivoting movements in which the first lever 204 crosses the axis of rotation 116 of the second shaft 112.
  • FIG. 4A This is shown by comparing the FIG. 4A and 4B illustrated.
  • the axis of rotation 116 of the second shaft 112 is shown in FIG FIG. 4A partially enclosed by the guide surface 206 while in FIG. 4B outside the first lever 202, in a projection along the axis of rotation 114 and / or the axis of rotation 116. Larger deflections for the first lever 202 and for the second lever 204 are thus made possible.
  • FIG. 5 shows a schematic view of another example of an arrangement 500.
  • the arrangement 500 has the structural and functional features of the arrangement 200 of FIG. 2 , 3 , 4A and 4B on.
  • the arrangement 500 differs from the arrangement 200 in that the first lever 202 has a further, second guide surface 502 in addition to the guide surface 206, which is also referred to as a first guide surface 206.
  • the roller 210 of the second lever 204 can be as described above with reference to FIG FIG. 2 roll described on the first guide surface 206.
  • the second guide surface 502 can prevent the roller 210 from striking the first guide surface 206 when the movement is started and / or from coming off the first guide surface 206 when the movement is terminated or when the movement is performed irregularly.
  • the roller 210 can roll on the second guide surface 502. Depending on the directions of movement of the shafts 110, 112 and on whether the shafts 110, 112 are driven by muscle strength (ie resistance mode) or by the resistance torque (s) (ie drive mode), the roller 210 can be positioned on the first guide surface 206 or roll on the second guide surface 502. In this way, stable guidance of the rolling section of the second lever 204 between the guide surfaces 206, 502 can be ensured.
  • roller 210 rolls on the second guide surface 502 when the levers 202, 204 execute respective upward pivoting movements, and a (in the alignment of the FIG. 5 ) counterclockwise torque on the first shaft 110 a torque predominates on the second shaft 112, so that a (first) transmission torque is transmitted from the first lever 202 to the second lever 204.
  • the first guide surface 206 and the second guide surface 502 are arranged at a distance from one another.
  • a gap 504 is formed between the first guide surface 206 and the second guide surface 502, in which the roller 210 of the second lever 204 is movably supported.
  • the first lever 202 comprises a first rail 506, or a first guide body 506, with the first guide surface 206 and a second rail 508, or a second guide body 508, with the second guide surface 502.
  • the first guide surface 206 and the second guide surface 502 are mutually exclusive arranged facing and / or formed.
  • the first lever 202 can be formed in one piece and comprise a groove which is formed along the guide surface 206 in which the roller 210 is movably mounted.
  • FIG. 6th FIG. 6 shows a schematic view of a further example of an arrangement 600.
  • the arrangement 600 has the structural and functional features of the arrangement 200 of FIG. 2 , 3 , 4A and 4B .
  • the arrangement 600 differs from the arrangement 200 in that the second lever 204 has a further, second roller 602 in addition to the roller 210, which is also referred to as a first roller 210.
  • the first lever 202 has a further, second guide surface 604 on which the second roller 602 can roll.
  • the first roller 210 of the second lever 204 can be as described above with reference to FIG FIG. 2 roll described on the first guide surface 206.
  • the second guide surface 604 can prevent the roller 210 from striking the first guide surface 206 when the movement is started and / or from coming off the first guide surface 206 when the movement is terminated or when the movement is performed irregularly.
  • the second roller 602 of the second lever 204 can roll on the second guide surface 604 of the first lever 202.
  • roller 210 rolls on first guide surface 206 or the second roller 602 rolls on the second guide surface 604. This way can be a stable guide of the rolling portion of the second lever 204 along the guide surfaces 206, 604 of the first lever 202 can be ensured.
  • the exemplary embodiments of the FIG. 5 and FIG. 6th be combined so that the first lever 202 has two guide surfaces 206, 502 and the second guide surface 604 as described above, and the second lever 204 has two rollers 210, 602 as described above.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Rehabilitation Tools (AREA)
EP19201411.6A 2019-10-04 2019-10-04 Appareil de sport Withdrawn EP3799936A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19201411.6A EP3799936A1 (fr) 2019-10-04 2019-10-04 Appareil de sport

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EP19201411.6A EP3799936A1 (fr) 2019-10-04 2019-10-04 Appareil de sport

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EP3799936A1 true EP3799936A1 (fr) 2021-04-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5437589A (en) * 1993-12-20 1995-08-01 Habing; Theodore J. Upper body exercise machine
US5634874A (en) * 1996-02-02 1997-06-03 Anthony M. Kest Portable upper anatomy exercise device
US7070544B1 (en) * 2003-01-30 2006-07-04 Randy Rindfleisch Isolation exercise machine with leverage arm
US7396319B1 (en) * 2005-04-08 2008-07-08 Northland Industries, Inc. Inner and outer thigh exercise machine
WO2013048025A1 (fr) * 2011-09-29 2013-04-04 Na Hun Gyu Machine d'exercice complexe pour renforcer l'adducteur et le sphincter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5437589A (en) * 1993-12-20 1995-08-01 Habing; Theodore J. Upper body exercise machine
US5634874A (en) * 1996-02-02 1997-06-03 Anthony M. Kest Portable upper anatomy exercise device
US7070544B1 (en) * 2003-01-30 2006-07-04 Randy Rindfleisch Isolation exercise machine with leverage arm
US7396319B1 (en) * 2005-04-08 2008-07-08 Northland Industries, Inc. Inner and outer thigh exercise machine
WO2013048025A1 (fr) * 2011-09-29 2013-04-04 Na Hun Gyu Machine d'exercice complexe pour renforcer l'adducteur et le sphincter

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