Weight-adjustable dumbbell
First Claim
1. A weight-adjustable dumbbell comprising:
- a carrier base having two support frames and a handgrip mounted between said two support frames for holding by the user'"'"'s hand;
a plurality of weights mounted respectively outside said two support frames and interconnected with one another, each of said weights having a through hole; and
two selection devices mounted respectively at bilateral sides of said carrier base and having an adjusting rod and an adjusting unit, said adjusting rod having a first guidance and a second guidance, said adjusting unit having a rotatable member for rotation by a force, and a retaining member engaging against said carrier base for stopping said rotatable member from axial movement, a guide lug slidably engaging said first guidance of said adjusting rod, a retaining piece engaging said second guidance of said adjusting rod for stopping said adjusting rod from rotation, whereby when said rotatable member of said adjusting unit is rotated, said guide lug moves along said first guidance to drive said adjusting rod to axially reciprocate through said through holes of said weights so as to optionally select the number of said weights.
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Abstract
An improved weight-adjustable dumbbell includes a carrier base, a plurality of weights, and two selection devices. The weights are mounted one by one respectively outside said carrier base, each having a through hole. The two selection devices are mounted respectively at two lateral sides of the carrier base, having an adjusting rod and an adjusting unit. The adjusting rod has a first guidance and a second guidance. The adjusting unit has a rotatable member and a retaining piece. The rotatable member has at least one retaining portion for stopping the rotatable member from axial movement, and a guide lug slidably engaging the guide groove. The retaining piece slidably engages the second guidance for stopping the adjusting rod from axial rotation. When the rotatable member is rotated, the adjusting rod can be driven to axially reciprocate through the through holes of the weights to select the desired number of the weights.
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Citations
15 Claims
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1. A weight-adjustable dumbbell comprising:
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a carrier base having two support frames and a handgrip mounted between said two support frames for holding by the user'"'"'s hand;
a plurality of weights mounted respectively outside said two support frames and interconnected with one another, each of said weights having a through hole; and
two selection devices mounted respectively at bilateral sides of said carrier base and having an adjusting rod and an adjusting unit, said adjusting rod having a first guidance and a second guidance, said adjusting unit having a rotatable member for rotation by a force, and a retaining member engaging against said carrier base for stopping said rotatable member from axial movement, a guide lug slidably engaging said first guidance of said adjusting rod, a retaining piece engaging said second guidance of said adjusting rod for stopping said adjusting rod from rotation, whereby when said rotatable member of said adjusting unit is rotated, said guide lug moves along said first guidance to drive said adjusting rod to axially reciprocate through said through holes of said weights so as to optionally select the number of said weights. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A weight-adjustable dumbbell comprising:
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a carrier base having two support frames and a handgrip mounted between said two support frames for holding by the user'"'"'s hand;
a plurality of weights mounted respectively outside said two support frames and interconnected with one another, each of said weights having a through hole; and
two selection devices mounted respectively at bilateral sides of said carrier base and having a adjusting rod and an adjusting unit, said adjusting rod having a guide groove and a guide channel, said guide groove arcuately extending along a periphery of said adjusting rod, said guide channel extending longitudinally along the periphery of said adjusting rod for a predetermined length, said adjusting unit having a rotatable member for rotation by a force, a retaining member engaging against inner sides of said support frames of said two said carrier base for stopping said rotatable member from axial movement, a guide lug slidably engaging said guide groove of said adjusting rod, and a retaining piece engaging said guide channel of said adjusting rod for stopping said adjusting rod from rotation, whereby when said rotatable member of said adjusting unit is rotated, said guide lug moves along said guide groove to drive said adjusting rod to axially reciprocate through said through holes of said weights within the predetermined length of said guide channel so as to optionally select the number of said weights. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification