dumbbell

Abstract

Dumbbell, in particular a one-handed dumbbell, comprising a weight body section (20) and a gripping section (50) with two longitudinal ends (51, 52), wherein the mass distribution of the dumbbell (1) is specified such that the center of gravity (S) of the usable mass of the dumbbell (1) lies in the gripping section (50), characterized in that the weight body section (20) is bent in a kidney shape (2) and the weight body section (20) is connected at the inner contour (21) of the kidney shape (2) to the two longitudinal ends (51, 52) of the gripping section (50).

Description

[0001] The invention relates to a dumbbell in the sense of a sports device for performing sports exercises, in particular a dumbbell that can be carried and guided with one hand.

[0002] In practice, barbells are commonly used. These typically consist of a straight, cylindrical bar that can be gripped in the middle section, with individual weight rings attachable to either side of the grip area. This design allows for quick changes in the overall weight and a stable attachment of the weight rings. However, the bar is quite long and always extends beyond the weight rings. When performing exercises with complex movement patterns, athletes risk the protruding ends of the bar colliding with their bodies. This can disrupt the movement sequence or lead to injuries.

[0003] On the other hand, there are dumbbells with a generally fixed weight that have an essentially spherical or ball-shaped weight body to which a roughly C-shaped handle is attached on one side (kettlebells). These dumbbells have a center of gravity located outside the handle, meaning that the dumbbell would swing around the handle during complex movements. Therefore, such dumbbells are generally only used for simple lifting movements. The swinging motion would be considered disruptive when performing complex movements. Furthermore, the swinging weight body could also lead to unintentional collisions or injuries.

[0004] US 343,433 S and JPH11216188 A each disclose a ring-shaped barbell with a solid handle and a solid arc section. The arc section extends to one side of the handle. There is no compensating counterweight on the opposite side. The overall center of gravity lies in the open area between the handle and the arc section.

[0005] The object of the present invention is to provide a dumbbell that is better suited for use in sports exercises with potentially complex movements, for example, in aerobic or dance exercises. A complex body movement can, on the one hand, include a translational movement of the dumbbell in space, particularly in at least two spatial directions. Furthermore, a complex body movement can include a rotational movement of the dumbbell, particularly a rotation about the extension of the user's forearm.

[0006] The invention solves this problem through the features of the independent claim.

[0007] The disclosure relates to a barbell comprising a weight body section and a grip section. The weight body section constitutes a substantial part of the barbell's usable mass. The grip section serves for the user to grasp and guide the barbell. It can also form part of the barbell's usable mass.

[0008] Depending on the design, the dumbbell can be made of one or more parts. In particular, the weight section and the gripping section can be formed as sections of the same body or as separate bodies.

[0009] The dumbbell is specifically designed as a one-handed dumbbell. It is a piece of sports training equipment.

[0010] The mass distribution of the barbell is designed so that the center of gravity of the barbell's usable mass lies in the gripping section.

[0011] The gripping section is grasped by the user's hand in an opening in one direction. This allows for easy gripping of the barbell by grasping around the center of gravity of the entire user mass, thus simplifying use. Holding and guiding forces are exerted on the barbell by the user's hand. These forces act on the outer contour of the gripping section. The center of gravity of the user mass is located within the points of application of these forces. Therefore, any acceleration applied by the hand movement acts in close proximity to the center of gravity, so that the movement of the barbell mass follows the hand movement with particularly low moments of inertia. Furthermore, the user's grip does not have to counteract a static tipping moment, as would be expected with an external center of gravity. Likewise, the barbell does not tend to oscillate around the gripping section, especially during acceleration.This makes handling easier, enables a complex sequence of movements during training, and prevents fatigue in the hand and arm muscles.

[0012] In other words, a stabilizing effect is achieved and / or the moment of inertia around the gripping section is reduced, which promotes improved control of the barbell guidance during the execution of the sports exercises.

[0013] The weight section can be attached to the gripping section in any way, either detachably or permanently. The gripping section is connected to the two longitudinal ends of the kidney-shaped handle along its inner contour, which supports a central center of gravity for the payload and allows for a secure grip. This facilitates precise and safe handling of the barbell and can reduce the risk of unintentional collisions with the user's body.

[0014] The weight section is bent into a kidney shape. This kidney shape is designed so that the (partial) center of gravity of the weight section lies within a space defined by the inner contour of the kidney shape. This allows for a compact design with a reduced obstruction compared to a barbell, enabling a wider variety of exercises. Furthermore, the grip section can be positioned within this space and in the area of ​​the (partial) center of gravity of the weight section.

[0015] The center of gravity (also called center of mass or center of weight) is the weighted average of the positions of the components of the payload. The payload can comprise a kidney-shaped weight section and, if applicable, the gripping section. The kidney-shaped weight section comprises multiple massed components, in particular a first end section, a middle section, and a second end section. The first end section, the middle section, and the second end section can be arranged in an arc around the intended hand position.

[0016] The middle section can be positioned in front of the fingers in the intended gripping position, in the direction of engagement. The first end section can be positioned above the thumb in the intended gripping position and extend against the direction of engagement to the wrist. The second end section can be positioned below the little finger in the intended gripping position and extend against the direction of engagement to the wrist.

[0017] The first end section can have a partial center of gravity that, in the intended gripping position, lies above the thumb and, in particular, between the finger joint and the wrist, and further, especially above the thenar eminence. The middle section can have a first partial center of gravity that, in the intended gripping position, lies in front of the fingers in the direction of engagement. The second end section can have a partial center of gravity that, in the intended gripping position, lies below the little finger and, in particular, behind the finger joint, in the direction of engagement.

[0018] The mass of the first end section can preferably be greater than the mass of the second end section. The volume of the first end section can preferably be greater than the volume of the second end section.

[0019] The mean of the positions of the respective parts of the weight body (center of gravity), weighted by the mass of each part, lies in the gripping section, especially in the intended gripping position, closer to the thumb than to the little finger.

[0020] A partial center of gravity of a handle, which in particular forms the gripping section, is preferably located within the gripping section.

[0021] Preferably, the first end section, the middle section, and the second end section lie in a common plane, particularly in the middle plane of the gripping section or in the base plane. Preferably, a partial center of gravity of the first end section, a partial center of gravity of the middle section, and a partial center of gravity of the second end section lie in a common plane, particularly in the middle plane of the gripping section or in the base plane.

[0022] The (overall) center of gravity of the payload can correspond to the mean position of the partial centers of gravity weighted by their respective masses.

[0023] The aforementioned features of the kidney-shaped weight body preferably apply accordingly to at least one kidney-shaped additional weight, and particularly preferably to a first kidney-shaped additional weight that can be arranged on a first side of the weight body, and a second kidney-shaped additional weight that can be arranged on a second, in particular opposite, side of the weight body. The arrangement / arrangeability of the first additional weight and the second additional weight is preferably adjacent to one side of the central plane of the gripping section / to one side of the base plane.

[0024] Further advantageous embodiments of the invention are specified in the dependent claims, the following description and the accompanying drawings.

[0025] The invention is illustrated in the drawings in an exemplary and schematic manner. These show: Fig. 1: Schematic side view of the dumbbell according to a preferred embodiment in the intended assembly state; Fig. 2: Perspective view of a dumbbell as intended, with a plurality of additional weights; Fig. 3: Perspective view of the weight body section and the grip section of the barbell according to Fig. 2 in a disassembled state; Fig. 4: Perspective view of an additional weight in a disassembled state; Fig. 5: Schematic diagram of a dumbbell in side view to illustrate the plane relationships.

[0026] Fig. Figure 2 shows a preferred embodiment of a dumbbell (1) according to the present disclosure. The dumbbell (1) is shown in a preferred embodiment which is not limiting. In the illustration, the dumbbell (1) comprises a gripping section (50) and a kidney-shaped weight body section (20). Furthermore, the dumbbell (1) comprises a plurality of additional weights (60, 70), in particular a first additional weight (60) which can be arranged or is arranged on one side of the weight body section (20).

[0027] Fig. Figure 5 illustrates a plurality of planes, shown in a side view of the barbell (1). The gripping section (50) can define a median plane (M), which can correspond in particular to a median plane of the closed grip of the user's hand (100). The weight body section (20) can define a base plane (A). The mass distribution of the weight body section can preferably be symmetrical about this base plane (A).

[0028] A preferred embodiment provides that the median plane (M) and the base plane (A) coincide. Alternatively, the median plane (M) and the base plane (A) can be offset or inclined relative to each other by a tolerance. Alternatively or additionally, the relative position of the median plane (M) and the base plane (A) can be adjustable.

[0029] A first additional weight (60) can preferably be added according to the overall view of the Fig. 2 and Fig. 5. A first offset plane (B) and a second additional weight (70) can preferably be arranged in a second offset plane (C). The first and second offset planes (B, C) are preferably arranged on both sides of the base plane (A) of the barbell (1) and preferably aligned parallel to the base plane (A). Alternatively, another relative relationship is possible. In particular, the first offset plane (B) and / or the second offset plane (C) can have an angle of inclination relative to the base plane (A).

[0030] The second additional weight (70) can preferably be configured to correspond to the first additional weight (60). The first additional weight (60) can preferably be arranged on one side of the weight body section (20) and the second additional weight (70) on the other side of the weight body section (20).

[0031] A first additional weight (60) and a second additional weight (70) preferably form a group, in particular an additional weight pair, wherein the mass within this additional weight pair is preferably distributed half on the first additional weight (60) and half on the second additional weight (70), in particular symmetrically with respect to an intermediate plane between the arrangement positions of the first additional weight (60) and the second additional weight (70), further in particular symmetrically with respect to the intermediate plane (M) and / or the base plane (A).

[0032] The symmetrical arrangement ensures that the common center of gravity of the first and second additional weights (60, 70) lies in the intermediate plane, in particular the middle plane (M) and / or the base plane (A). In other words, the common center of gravity of the first and second additional weights (60, 70) also lies in the intended arrangement position in the gripping section (50).

[0033] In the example of Fig. 2. A first group of additional weights with a smaller mass and a second group of additional weights with a larger mass are provided. In other words, the barbell (1) can preferably comprise at least one group of first and second additional weights (60, 70), and more preferably at least two or three groups of additional weights. Within each group, a symmetrical mass distribution can preferably be provided. In other words, each group can contain a first additional weight (60) and a correspondingly shaped second additional weight (70).

[0034] Fig. 1, Fig. 2 to Fig. Section 3 describes preferred embodiments of a gripping section (50). The gripping section (50) has a main extent between the first longitudinal end (51) and the second longitudinal end (52). Furthermore, the gripping section (50) can have any shape, in particular any cross-sectional shape. The cross-sectional shape can be circular, at least partially.

[0035] According to a preferred embodiment, the cross-sectional shape of the gripping section (50) deviates from a circular shape, preferably in a predominant area along the main extent.

[0036] The principal extent of the gripping section (50) defines a first direction (x). This first direction (x) is preferably collinear or parallel to the median plane (M) of the gripping section. A second direction (y) preferably extends in the median plane (M) or parallel to the median plane (M) and perpendicular to the first direction (x). The first direction (x) can be called the principal extent direction of the gripping section (50) and the second direction (y) the transverse direction of the gripping section (50).

[0037] Perpendicular to the first and second directions (x, y), a third direction (z) is defined, exemplified in Fig. Figure 2 shows the normal direction. The at least one offset plane (B, C) is preferably offset along the third direction / normal direction (z) relative to the base plane (A) and / or the mid-plane (M).

[0038] The cross-sectional shape of the gripping section (50) preferably has a greater extent in the transverse / second direction (y) than in the normal direction (z). This facilitates a firm grip on the gripping section (50) by the user's hand (100). The cross-sectional shape can preferably be substantially rectangular or elliptical.

[0039] The gripping section is preferably designed to be hand-width along its main extension. This can encompass the average width of a hand (100) of an intended user (man, woman, child), possibly with an additional tolerance. A hand-width design allows the barbell (1) to be gripped with one hand and simultaneously contributes to the overall compact size of the barbell (1). In other words, the hand-width shape facilitates the avoidance of interfering contours and reduces the moment of inertia. This leads to improved exercise performance. The width of the gripping section (50) can preferably be 8-13 cm, particularly 10 cm.

[0040] The curvature of the kidney shape (2) lies preferentially in the base plane (A). In particular, it can lie predominantly or completely in the base plane (A).

[0041] In other words, the curvature of the kidney shape (2) surrounds an interior space (4) in a curved shape. The curved mass distribution of the weight section (20), resulting from the kidney shape (2), reduces the moment of inertia. This allows the barbell (1) to be gripped securely, making it easier to use.

[0042] The kidney shape (2) preferably has a first end section (24), a middle section (23), and a second end section (25) in the direction of curvature / bending. Preferably, the first end section (24), the middle section (23), and the second end section (25) are designed to contain mass. The mass distribution between the first end section (24), the middle section (23), and the second end section (25) can be chosen arbitrarily. Preferably, one of the end sections, in particular the second end section (25), can be designed for an arrangement close to the thumb. The other end section, in particular the first end section (24), can be designed for an arrangement farther from the thumb.

[0043] A thumb-near or thumb-far arrangement can be defined or specified in any way, for example by a visual marking and / or by a shape that is intuitively understandable to the user.

[0044] A preferred embodiment provides that the main extension of the gripping section (20) is inclined relative to a direction of engagement (E). Fig. Figure 1 shows an angle of inclination (k) defined between the first direction (x) and the second direction (y). The value of the angle of inclination (k) can be chosen arbitrarily. It preferably deviates from a right angle. The angle of inclination (k) can preferably be between 105 and 115 degrees, preferably between 95 and 105 degrees.

[0045] A thumb-close arrangement can preferably be provided on the side of the angle of inclination (k). This corresponds to the natural shape of the grip of a human hand (100). This is because the spatial extension of the grip generally follows a line of the finger joint course (102), which, in a normal hand position (100), i.e., without any bending of the wrist, is usually inclined at a corresponding angle relative to the forearm extension (104).

[0046] Preferably, the mass distribution can be selected such that the mass fraction of the end section closest to the thumb, in particular the second end section (25), is proportionally larger than the mass fraction of the end section furthest from the thumb, in particular the first end section (24). This favors a slightly off-center arrangement of the center of gravity (S) of the usable mass. The off-center position of the center of gravity (S) is preferably located near the intended position of the thumb with respect to the main extension of the gripping section (20). It has been shown that this results in a more comfortable gripping experience for the user of the dumbbell (1), which accommodates the asymmetrical distribution of hand forces. The center of gravity (S) can, in particular, be located in a position along the main extension of the gripping section (50) that corresponds to the intended position of the index finger or a transition from the index finger to the ring finger.

[0047] The kidney shape (2) of the weight body section (20) and / or of an additional weight (60, 70) can be physically limited in any way.

[0048] A preferred embodiment provides that the kidney shape (2) is bounded at an outer boundary contour (26) by a rim, which may preferably have a rounded edge (31). In other words, the rim or rounded edge (31) is designed to prevent injury. This facilitates the avoidance or reduction of the risk of injury in collisions with the user's body and / or the risk of other damage in collisions with external bodies.

[0049] Alternatively or additionally, the kidney shape (2) can be provided with a rounded edge (31) on an inner contour (21) that defines the interior space (4). This facilitates safe hand access (100) to the interior space (4).

[0050] Preferably, the kidney shape (2) surrounds the inner space (4) with an enclosing angle of 150-210 degrees, more preferably 170-190 degrees, and more preferably 180 degrees. The inner contour (2) can have a first longitudinal section that bounds the first end section (24) of the weight body section (20), and a second longitudinal section that bounds the second end section (25) of the weight body section (20). The first longitudinal section and / or the second longitudinal section can preferably be oriented substantially parallel to the direction of engagement (E).

[0051] A further longitudinal section of the inner contour (21) can preferably be oriented substantially parallel to the main extent of the gripping section (50). Between this further longitudinal section of the inner contour (21) and the gripping section (50), an engagement opening (6) can preferably be formed in the intended assembly position. The engagement opening is, in particular, a part of the interior space (4). The engagement opening (6) can be a through opening. Alternatively, the engagement opening can have internal partitioning that, for example, defines preferred positions for one or more fingers.

[0052] The kidney shape (2) can be symmetrical or asymmetrical. According to a preferred embodiment, the kidney shape (2) is asymmetrical with respect to the two end sections (24, 25) of the weight body section (20) and / or asymmetrical with respect to the direction of engagement (E). In other words, the first end section (24) can be asymmetrical with respect to the second end section (25). In particular, the second end section (25) can be larger and / or have a higher partial mass than the first end section (24).

[0053] According to a preferred embodiment, the kidney-shaped bend (2) corresponds to a semicircular bend and / or a C-shape and / or a U-shape, in particular a parabolic curvature.

[0054] A preferred design provides that the weight body section (20) and / or the gripping section (50) is rigid. This allows for a reduction in the tendency of the barbell (1) to oscillate and for smoother and more precise control by the user.

[0055] The weight body section (20) can have any physical configuration. Preferably, the weight body section (20) can be formed by a base body (22). The base body (22), possibly in combination with the grip section (50), can define a minimum training mass. The minimum training mass can be arbitrarily defined and, for example, be 0.5 kilograms, 1 kilogram, 1.5 kilograms, or 2 kilograms. Varying the usable weight with one or more additional weights (60, 70) can increase the training mass and thus improve the adaptability of the barbell (1) to the user, as well as increase the variety of exercises that can be performed.

[0056] The barbell (1) can have a first extension interface (28, 28') that allows the addition of further weight and thus a variation of the payload. The first extension interface (28, 28') can be provided, in particular, on the weight body section (20) and / or on the gripping section (50).

[0057] An additional weight (60, 70) may have a second extension interface (61, 61'). An additional weight (60, 70) or a group of additional weights may be permanently or releasably attached to the barbell (1), in particular at the first extension interface (28, 28'), using the second extension interface (61, 61'), in particular by: ▪ Screw connection; and / or ▪ Clamping; and / or ▪ Magnetic force; and / or ▪ Welding; and / or ▪ Form-fitting connection; and / or ▪ Force-fit connection.

[0058] The first expansion interface (28, 28') and the second expansion interface (61, 61') are configured to correspond to each other. A preferred embodiment provides that the first expansion interface (28, 28') and / or the second expansion interface (61, 61') includes a quick-release fastener and / or is operable with one hand. This facilitates a quick changeover of the additional weights (60, 70). The figures show an exemplary combination of a bore, in particular a threaded bore, and a screw fastening, which is a simple and cost-effective design.

[0059] The basic body (22) can have any configuration. In the figures, it is shown as a first plate, representing a preferred variant. This first plate is preferably essentially flat and / or has essentially planar interfaces.

[0060] The first plate is in particular a plate bent in a kidney shape (2), wherein the bending of the kidney shape (2) extends in the base plane (A).

[0061] This ensures a central center of gravity (S) of the barbell (1) in the gripping section (50) and thus enables stable guidance, especially during rotational movements.

[0062] An additional weight (60, 70) can preferably be a second plate. The second plate can preferably be substantially flat and / or have substantially planar interfaces. In particular, the second plate can be a kidney-shaped plate (2), which allows for a simple and stable lateral extension of the barbell (1) by one or more additional weights (60, 70).

[0063] An additional weight (60, 70) can preferably be fixed in a provided arrangement position, in particular in an offset plane (B, C) to the base plane (A).

[0064] According to a preferred embodiment, a first additional weight (60, 70) can be arranged in a first offset plane (B) to one side of the base plane (A), and a second additional weight (60, 70) can be arranged in a second offset plane (C) opposite the base plane (A), and preferably fixed in place. This fixing preferably prevents a shift in the center of gravity (S) and enables precise and stable guidance of the barbell (1) even in the extended state, thereby increasing the efficiency and safety of the training exercises.

[0065] The gripping section (50) can have one or more fastening interfaces, in particular a first fastening interface (53, 53') at each of the longitudinal ends (51, 52). This enables the weight body section (20) to be fastened to the gripping section (50).

[0066] A first fastening interface (53, 53') can be configured in any way. A preferred embodiment, illustrated in the figures, provides that the first fastening interface (53, 53') has at least one groove (29, 30) and / or a bore. The groove (29, 30) can be configured to correspond to a fitting contour on the weight body section (20). This enables, in particular, a positive-locking connection between the gripping section (50) and the weight body section (20).

[0067] The weight body section (20) preferably comprises at least one second fastening interface (27, 27'), in particular one second fastening interface (27, 27') each on an inner contour (21) of the first end section (24) and on an inner contour (21) of the second end section (25). A first fastening interface (53, 53') on the gripping section is preferably configured (in each case) corresponding to a second fastening interface (27, 27') on the weight body section.

[0068] According to a preferred embodiment, a second fastening interface (27, 27') can be formed with a bore and / or weld. The bore allows for a detachable connection, which enables individual use of the gripping section (50) as a training weight. The weld enables a non-detachable connection, which increases user-friendliness and makes the barbell (1) suitable, for example, for use in gyms where the barbell (1) is used by a wide variety of users who may not have experience with adjustable barbells.

[0069] The gripping section (50) and the weight body section (20) are preferably connected or connectable in the area of ​​the fastening interfaces (27, 27' / 53 53'), in particular detachably connected. The connection between the gripping section (50) and the weight body section (20) can be provided in only one relative position, or in at least two relative positions. For example, a first relative position with a first inclination angle (k) and a second relative position with a second inclination angle (k) can be provided.

[0070] The connection between the gripping section (50) and the weight body section (20) can be made in any way, in particular by: ▪ Screw connection; and / or ▪ Clamping; and / or ▪ Magnetic force; and / or ▪ Welding; and / or ▪ Form-fitting connection; and / or ▪ Force-fit connection.

[0071] A preferred embodiment provides that the gripping section (50) and / or the weight body section (20) is made of a metal or comprises a metal body.

[0072] The gripping section (50) and / or the weight body section (20) can be coated, in particular with a shock-absorbing and / or adhesion-enhancing coating. The coating can increase the service life and / or facilitate a secure grip, thus increasing safety during training.

[0073] The gripping section (50) can preferably be designed as a handle (54), in particular in the form of a pistol grip (54). The shape of the pistol grip (54) creates a favorable force distribution along the finger joint (102).

[0074] The gripping section (50) can be made in one piece or in multiple pieces. A multi-piece embodiment preferably has a central section of the gripping section (107) and (at least) one lateral section of the gripping section (105, 106). If more than one lateral section of the gripping section (105, 106) is present, in particular if two lateral sections are present, these lateral sections of the gripping section (105, 106) are preferably arranged symmetrically to each other. In a preferred embodiment, the handle is designed with a first lateral section of the gripping section (105) and a second lateral section of the gripping section (106).

[0075] The at least one lateral section of the gripping section (105, 106) is preferably designed in a shell shape.

[0076] The middle section of the gripping section (107) and the at least one lateral section of the gripping section (105, 106) can be made of the same material, in particular of a metal, or of different materials, in particular of a metal on the one hand and of a plastic on the other.

[0077] Preferably, at least one lateral section of the gripping section (105, 106) is made of a material with an increased coefficient of friction. This enables a stable grip by the user.

[0078] Preferably, the central section of the gripping section (107) is made of a high-density material. This allows for an increased payload and thus a better training effect for the user.

[0079] In a multi-part design, the center of gravity of the gripping section (50) is preferably the same as or analogous to the center of gravity described above in a one-part design.

[0080] In a multi-part design of the gripping section (50), the connection of the individual sections at a gripping section interface (108, 108') can be carried out in any way, in particular by: ▪ Screw connection; and / or ▪ Clamping; and / or ▪ Adhesive bonding; and / or ▪ Magnetic force; and / or ▪ Welding; and / or ▪ Form-fitting connection; and / or ▪ Force-fit connection.

[0081] In a preferred embodiment, the sections of the gripping section (105, 106, 107) are connected by a screw connection or a rivet connection.

[0082] The gripping section (50) can preferably have a thumb groove (55) at a first longitudinal end (51). The thumb groove can have any suitable shape. In the example of Fig. 1. A thumb groove (55) is formed by a semicircular contour (lying in the base plane A). The thumb base (101) and / or the palm (103), which extends between the thumb and index finger, can preferably rest against the thumb groove when gripping. The thumb groove (55) thus enables a better grip with the hand (100). The thumb and / or palm can find additional support in the thumb groove (55). The thumb groove can also prevent or limit slippage of the hand (100) when the hands are wet.

[0083] An additional weight (60, 70) can be added according to the illustration in Fig.4. The inner contour (63) of the kidney shape (2) has an additional recess (62). This recess may, in particular, have a negative shape corresponding to a longitudinal end (51, 52) of the gripping section (50). The recess facilitates the attachment of one or more additional weights (60, 70) close to the center of gravity (S) of the barbell (1) without causing a collision with the longitudinal ends (51, 52) of the gripping section (50). Furthermore, the recess may provide additional support or fixation of the additional weight relative to a longitudinal end (51, 52) of the gripping section (50). This may increase stability and safety during training.

[0084] Further modifications of the invention are possible in various ways. In particular, the features of the embodiments can be combined with one another in any way.

[0085] The weight body section (20) can be designed as a solid body or at least partially as a hollow body and may include one or more full or partial cavities. An additional weight can be inserted into such a cavity. For example, the weight body section (20) can be formed as a molded body or as a molded body comprising one or more cavities that can be filled with an additional weight. The molded body can, for example, be made of a plastic and / or be a blow-molded body. The additional weight can be a solid, a liquid, a bulk material, or a mixture thereof. The molded body can further comprise the gripping section (50) as a preferably integrally connected component.

[0086] An additional weight can also be designed as a solid body or at least partially as a hollow body and comprise one or more full or partial cavities into which, in particular, an additional weight can be inserted.

[0087] An additional weight is preferably made of metal. Alternatively, an additional weight can be made of various materials with variable mass, particularly wood, plastic, and / or foam. The user can thus vary the mass. Another alternative or additional design provides for an additional weight to be made at least partially of a cushioning material, such as foam. This cushioning material can serve as padding for the barbell to prevent user injury.

[0088] The weight body section (20) can have exactly one or preferably two flat side surfaces, in particular with an orientation parallel to the base plane (A). Alternatively, one or more side surfaces of the weight body section (20) can have a curved or convex shape.

[0089] At least one mounting interface (27, 27' / 52, 52') can be combined with one expansion interface (28, 28' / 61, 61'). Reference sign 1 dumbbell / single-handed dumbbell 2 kidney shape 4 Inland waters 6 access opening 20 Weight body section 21 Inner contour 22 Basic shapes 23 Middle section 24 First final section 25 Second final section 26 Outer boundary contour / edge 27.27' Second mounting interface 28.28' First expansion interface 29 Nut 30 Nut 31 Rounded edge 50 Gripping section 51 First longitudinal end 52 Second longitudinal end 53.53' First mounting interface 54 Handle / Pistol grip 55 Thumb groove 60 additional weight 61.61' Second expansion interface 62 Exclusion 63 Inner contour 70 (additional) extra weight 100 Hand 101 Thumb thenar eminence 102 Finger joint course 103 span 104 Forearm extension 105 First lateral section of the gripping section 106 Second lateral section of the gripping section 107 Middle section of the gripping section 108, 108' Gripping section interface A Base plane of the weight body section / the barbell B First offset level C Second offset level E Direction of intervention M Middle plane of the gripping section S center of gravity payload x First direction in the ground plane y Second direction in the ground plane z transverse direction k angle of inclination QUOTES INCLUDED IN THE DESCRIPTION

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

[0000] US 343 433 S

[0004] JPH11216188 A

[0004]

Claims

[1] Dumbbell, in particular a one-handed dumbbell, comprising a weight body section (20) and a gripping section (50) with two longitudinal ends (51, 52), wherein the mass distribution of the dumbbell (1) is such that the center of gravity (S) of the usable mass of the dumbbell (1) lies in the gripping section (50), characterized by , that the weight body section (20) is bent in a kidney shape (2) and the weight body section (20) is connected at the inner contour (21) of the kidney shape (2) to the two longitudinal ends (51, 52) of the gripping section (50). [2] Dumbbell according to claim 1, wherein the center of gravity (S) lies in a median plane (M) of the gripping section (50). [3] Dumbbell according to claim 1 and 2, wherein the weight body section (20) and / or the gripping section (50) is rigidly designed. [4] Dumbbell according to one of the preceding claims, wherein the weight body section (20) is formed by a base body (22). [5] Dumbbell according to one of the preceding claims, wherein the dumbbell (1), in particular the weight body section (20), can be extended by at least one additional weight (60, 70). [6] Dumbbell according to one of the preceding claims, wherein the dumbbell (1) has a first extension interface (28, 28') which is arranged in particular on the weight body section (20) and / or on the gripping section (50). [7] Dumbbell according to one of the preceding claims, wherein the at least one additional weight (60, 70) can be fixedly or releasably attached to the dumbbell (1), in particular by: - Screw connection; and / or - Clamping; and / or - Magnetic force; and / or - Welding; and / or - Form-fitting connection; and / or - Force-fit connection. [8] Dumbbell according to one of the preceding claims, wherein the first extension interface (28, 28') for the fixed reception of at least one additional weight (60, 70) is formed with a second extension interface (61, 61'). [9] Dumbbell according to one of the preceding claims, wherein the weight body section (20) extends in a base plane (A) which in particular coincides with the median plane (M) of the gripping section (50). [10] Dumbbell according to one of the preceding claims, wherein a first direction (x) in the base plane (A) extends along the extent of the gripping section (50) and a second direction (y) in the base plane (A) extends transversely to the first direction (x). [11] Dumbbell according to one of the preceding claims, wherein the base body (22) is designed as a first plate, in particular a plate bent in a kidney shape (2), wherein the bending of the kidney shape (2) extends in particular in the base plane (A). [12] Dumbbell according to one of the preceding claims, wherein the at least one additional weight (60, 70) is designed as a second plate, in particular a plate bent in kidney shape (2). [13] Dumbbell according to one of the preceding claims, wherein an additional weight (60, 70) can be arranged in an offset plane (B, C) to the base plane (A). [14] Dumbbell according to one of the preceding claims, wherein a first additional weight (60) can be arranged and fixed in a first offset plane (B) to one side of the base plane (A) and a further additional weight (70) can be arranged and fixed in a second offset plane (C) to the base plane (A), such that in particular the center of gravity (S) of the payload including the additional weights (60, 70) is located in the gripping section (50), further in particular in the base plane (A) and / or the intermediate plane (M) of the gripping section (50). [15] Dumbbell according to one of the preceding claims, wherein the kidney shape (2) comprises a middle section (23) and two end sections (24, 25). [16] Dumbbell according to one of the preceding claims, wherein the kidney shape (2) encloses an inner space (4) in an arc-shaped manner. [17] Dumbbell according to one of the preceding claims, wherein the first end section (24), the middle section (23) and the second end section (25) define three sides of the interior space (4). [18] Dumbbell according to one of the preceding claims, wherein edges (26) of the weight body section (20) are rounded. [19] Dumbbell according to one of the preceding claims, wherein the gripping section (50) has a fastening interface, in particular a first fastening interface (53, 53') at each of the longitudinal ends (51, 52). [20] Dumbbell according to one of the preceding claims, wherein the first fastening interface (53, 53') has a groove (29, 30) and / or a bore. [21] Dumbbell according to one of the preceding claims, wherein the weight body section (20) has a fastening interface, in particular a second fastening interface (27, 27') on an inner contour (21) of the first end section (24) and on an inner contour (21) of the second end section (25). [22] Dumbbell according to one of the preceding claims, wherein the second fastening interface (27, 27') is formed with a bore and / or a weld point. [23] Dumbbell according to one of the preceding claims, wherein the gripping section (50) and the weight body section (20) are connected or connectable in the area of ​​the fastening interfaces (27,53 / 27',53'), in particular detachably connectable. [24] Dumbbell according to one of the preceding claims, wherein the connection between the gripping section (50) and the weight body section (20) is effected by: - Screw connection; and / or - Clamping; and / or - Welding; and / or - Form-fitting connection; and / or - Force-fit connection. [25] Dumbbell according to one of the preceding claims, wherein the gripping section (50) and / or the weight body section (20) is made of a metal. [26] Dumbbell according to one of the preceding claims, wherein the gripping section (50) and / or the weight body section (20) has a surface coating. [27] Dumbbell according to one of the preceding claims, wherein the gripping section (50) is designed as a handle (54), in particular in the form of a pistol grip (54). [28] Dumbbell according to one of the preceding claims, wherein the at least one additional weight (60, 70) has an additional recess (62) on the inner contour (63), which in particular has a negative shape to a longitudinal end (51, 52) of the gripping section (50). [29] Dumbbell according to one of the preceding claims, wherein the first direction (x) in which the gripping section (50) extends is inclined at an angle (k) relative to an engagement direction (E) into the interior space (4), wherein the angle (k) is in particular 90 to 110 degrees, and further in particular 95 to 105 degrees.

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