Sports dumbbell

Abstract

A sports dumbbell comprises a grip section (2), which runs along a grip shaft (L1), and a support shaft (L2) of a support section (3) spaced apart from the grip section (2) perpendicular to and running parallel to the grip shaft (L1). The support section is connected at at least one end to the grip section (2). The sports dumbbell has a center of gravity (S) which is arranged within the support section (3). A distance (d2) between the grip shaft (L1) and the support shaft (L2) is at least 11 cm, and an external shape of the sports dumbbell forms a closed annular body or open annular body.

Claims

1. A sports dumbbell comprising: a grip portion (2) running along a grip axis (L1); a support portion (3) including a support axis (L2), wherein the support axis (L2) is spaced from the grip portion (2) and runs parallel to the grip axis (L1); wherein along the support axis (L2) the support portion (3) has mutually opposing first and second ends and at least one of the first and second ends of the support portion (3) is connected to the grip portion (2), wherein a distance (d2) between the grip axis (L1) and the support axis (L2) is at least 11 cm, wherein an outer shape of the sports dumbbell is fixed and substantially U-shaped, and wherein the sports dumbbell has a center of gravity (S) located inside the support portion (3) such that the sports dumbbell can be used in a manner that no torque is provoked in a user's wrist or arm; and an end of a length-adjustable strap (8) provided on each of a first and a second end of the grip portion, the length-adjustable strap configured to be held behind a heel of the user when a foot tip of the user is extended through a passage opening (7) formed between the grip portion (2) and the support portion (3) wherein the first and second ends of the grip portion (2) are mutually opposing along the grip axis (L1), the first end of the grip portion (2) is connected to the first end of the support portion (3) by a first connecting portion (4), and the second end of the grip portion (2) has no direct connection to the second end of the support portion (3).

2. The sports dumbbell according to claim 1, wherein the distance (d2) between the grip axis (L1) and the support axis (L2) is between 11 cm and 13 cm.

3. The sports dumbbell according to claim 1, wherein the support portion (3) has a maximum diameter (D2) between 8.5 cm and 12 cm, and a minimum diameter (D1) of the grip portion (2) is 3 cm.

4. The sports dumbbell according to claim 1, wherein a maximum diameter (D2) of the support portion (3) is at most three times as large as a minimum diameter (D1) of the grip portion (2).

5. The sports dumbbell according to claim 1, wherein the outer shape of the sports dumbbell (1) is formed by a plastic coating covering a complete surface of the sports dumbbell.

6. The sports dumbbell according to claim 1, wherein the grip portion (2) has a thumb notch.

Description

(1) The invention is described with reference to an exemplary embodiment shown in seven figures. The drawings show:

(2) FIG. 1 a side principle view of a sports dumbbell according to the invention in a first embodiment,

(3) FIG. 2 a perspective view of the sports dumbbell in FIG. 1,

(4) FIG. 3a-FIG. 3c positions of the dumbbell in FIG. 1 in an athlete's hand,

(5) FIG. 4 the sports dumbbell in FIG. 1 with a strap for holding on the foot,

(6) FIG. 5 a sports dumbbell according to the invention in a second embodiment.

(7) FIGS. 1-4 shows a sports dumbbell in a first embodiment.

(8) The sports dumbbell 1 shown in FIG. 1 has a grip portion 2 and a support portion 3. The grip portion 2 has a grip axis L1 arranged centrally along a longitudinal extension. The grip portion 2 is intended to be gripped by an athlete's hand. A support portion 3 is arranged opposite the grip portion 2, perpendicularly to the grip axis L1. The support portion 3 has a support axis L2 arranged parallel to the grip axis L1. The grip axis L1 and the support axis L2 each pass centrally through the respective portions 2, 3.

(9) Along its grip axis L1, the grip portion 2 has a mutually opposing first end and a second end, and along the support axis L2, the support portion 2 has a mutually opposing first end and a second end. The respective first ends are connected together rigidly with fixed position via a first bow-shaped connecting portion 4. The two second ends are also connected together rigidly with fixed position via a second connecting portion 5, which is configured substantially mirror-symmetrically to the first connecting portion 4. A distance d1 between inner walls of the grip portion 2 and the support portion 3 here amounts to 6 cm. Other dimensions are however conceivable. A distance d2 between the grip axis L1 and the support axis L2 is between 11 cm and 13 cm. The distance d2 is dimensioned such that when the grip portion 2 is gripped by the athlete's hand, the support portion 3 rests on his lower arm on the elbow side of the wrist. By resting the weight on the lower arm, the wrist is under significantly less load than from conventional dumbbells when sports exercises are performed.

(10) A diameter D1 of the grip portion 2 is at least 3 cm. It is here constant along its entire extension along the grip axis L1. A diameter D2 of the support portion 3 is between 8.5 cm and 11 cm. In the embodiment in FIG. 1, it is also constant along its entire extension along the support axis L2.

(11) The weight distribution is dimensioned such that a centre of gravity S of the sports dumbbell 1 is arranged on the grip portion 2 centrally in the direction of the grip axis L1, but the centre of gravity S is arranged not inside the grip portion 2 perpendicularly to the grip axis L1, but inside the support portion 3, so that during sports exercises the weight of the sports dumbbell is not moved via the wrist but via the hand-side ends of the lower arms. The sports dumbbell 1 is configured substantially mirror-symmetrically along a mirror plane arranged perpendicularly to the grip axis L1 and the support axis L2, in order to allow an approximately central positioning in the axial direction.

(12) FIG. 2 shows the sports dumbbell 1 in FIG. 1 in a perspective view. The grip portion 3 extended in the longitudinal axis L1 has connecting portions 4, 5 at its first and second ends, which are connected respectively to the first and second ends of the grip portion 2. The grip portion 2, the connecting portions 4, 5 and the support portion 3 form a closed annular outer form, where the term annular here does not mean a strictly circular outer form but a closed form with a passage hole 7. The passage hole 7 is intended for an athlete's hand to pass through.

(13) A cross-section of the connecting portions 4, 5 is constant, and that of the support portion 3 is also substantially constant perpendicularly to the peripheral direction; a cross-section of the handle portion 2 along and perpendicularly to the peripheral direction, at 3 cm in diameter D1, is significantly smaller than the diameter D2 of the support portion 3. The diameter D2 of the support portion 3 is between 8.5 cm and 11 cm. The outer dimensions of the sports dumbbell in FIG. 2 are 28 cm to 30 cm in the direction of the grip axis L1 or the support axis L2, and 17.5 cm to 20 cm perpendicularly to the grip axis.

(14) FIGS. 3a to 3c show the grip hold of a athlete for performing sports exercises. FIG. 3b shows the sports dumbbell 1 of FIG. 1 held by an athlete at the grip portion 2. The support portion 3 lies on the back-hand side of the lower arm, wherein the contact point of the grip portion 2 lies on the arm side of the wrist. The centre of gravity S of the entire sports dumbbell 1 also lies inside the support portion 3, so that on when the arms are moved, the contact point of the force is provided on the arm side of the wrist, and hence there is no excessive strain on the wrist.

(15) FIGS. 3b and 3c show a grip hold of the sports dumbbell 1 with the hand open; once from the front of the hand and once from the back of the hand.

(16) FIG. 4 shows a second embodiment of the sports dumbbell 1 according to the invention, wherein eyelets (not shown) are provided on the connecting portions 4, 5, at the ends of which an elastic and/or length-adjustable strap 8 is arranged, which can therefore be held behind the heel of the athlete if the athlete extends his foot through the passage opening 7 of the sports dumbbell. Then strengthening and sports exercises using the legs can also be performed.

(17) FIG. 5 shows a second embodiment of the sports dumbbell 1 according to the invention. The same reference numerals designate the same features. The sports dumbbell 1 has a grip portion 2 and a support portion 3, which may be formed as in the first embodiment. In contrast to the first embodiment, only the second connecting portion 5 is provided between the grip portion 2 and the support portion 3, which holds the grip portion 2 and the support portion 3 fixed in position relative to each other. There is no first connecting portion 4. The sports dumbbell 1 is open at the first end. The sports dumbbell 1 is therefore not annular in a cross-section in the plane formed by the grip axis L1 and the support axis L2, as in the first embodiment, but is configured substantially U-shaped. The centre of gravity S is arranged inside the support portion 3.

LIST OF REFERENCE NUMERALS

(18) 1 Sports dumbbell 2 Grip portion 3 Support portion 4 First connecting portion 5 Second connecting portion 7 Passage hole 8 Strap d1 Distance d2 Distance D1 Diameter of grip portion D2 Diameter of support portion L1 Grip axis L2 Support axis S Centre of gravity