An adjustable kettlebell device comprising a solid right circular frustum as a base, a post, a sleeve, one or more weight plates, one or more quick release clamps, and a removable handle. The post has an outer diameter compatible with standard weights, and a sleeve that slides over the post has an outer diameter compatible with Olympic weights. The handle is configured to facilitate an addition/removal of the weight plates, and may be swapped with different sized handles for use with different sized hands.

An adjustable exercise device includes a dumbbell having one or more weight members attached to a central handle member, and one or more weight elements attachable to the weight members, and a receptacle includes a housing, two casings engageable to the housing for receiving and engaging with the weight members, and one or more spacers detachably attached to the housing and engaged between the housing and the casings for receiving and engaging with the weight elements. The housing includes two anchoring members, and the casings each include an anchoring element for engaging with the anchoring members and for detachably attaching the casings to the housing.

In one aspect, the invention features a barbell including a first end portion, a second end portion, and a middle portion, where the middle portion is couplable to the first end portion and the second end portion. The middle portion includes a male coupling extending from a first end of the middle portion, the male coupling providing a first coupling mechanism that engages with a corresponding female coupling of the first end portion, and a female coupling providing a second coupling mechanism that engages with a corresponding male coupling of the second end portion.

A balancing exercise rod apparatus for working out while walking or jogging includes a grip bar having a left end and a right end. A pair of wheels is coupled to the grip bar. The pair of wheels includes a left wheel and a right wheel rotatably coupled to the left end and the right end of the grip bar, respectively. Each of the wheels has a hub rotatably coupled to the grip bar, a plurality of spokes extending from the hub, and a rim portion. The rim portion has an inner side, an outer side, an interior face, and an exterior face. The plurality of spokes extends from the hub to the interior face. A plurality of wheel weights is coupled to the pair of wheels. The plurality of wheel weights is coupled within the rim portion.

The present invention relates to a fast-adjusting dumbbell, comprising a dumbbell body and dumbbell pieces cumulatively attached to both ends of the dumbbell body. The dumbbell body includes a grip rod, a planetary gear system, and a telescopic rod. The grip rod is rotated and drives the planetary gear system to realize the expansion and contraction of the telescopic rod, thereby adjusting the number of dumbbell pieces, which is convenient to operate and easy to implement. Both ends of the grip rod are assembled with flange driving members, the planetary gear system includes an outer casing, through the installation mode that the flange driving member is engaged with the planetary gear system, the planetary gear mechanism is disposed enclosedly, and a load-bearing iron ring is also disposed in the planetary gear system to play a load-bearing and limiting effect on the planetary carrier.

The present invention relates to a dumbbell and especially relates to an improvement on an assembly mode of a grip rod and flanges at both ends thereof in the dumbbell. The present invention axially positions the grip rod and the flange by the assembly of the first assembly groove in an L shape on the grip rod and the positioning block on the flange, then circumferentially positions the grip rod and the flange by plugging a positioning pin in the first assembly groove of the grip rod and the second assembly groove of the flange simultaneously, in cooperation with the shaft-hole fitting of the grip rod and the flange themselves, thereby implementing screw-free installation of the grip rod and the flange, simple manufacturing, a low cost and a high installation efficiency.

The present invention relates to an adjustable dumbbell, which includes a rotatably disposed grip rod and a locking element, wherein a locking portion is disposed at both ends of the grip rod, the locking element includes a base, a movable pin and a compression spring, the movable pin is slidably disposed in the base, the base is provided with a first spring sleeve column, the movable pin is provided with a second spring sleeve column, and both ends of the compression spring are respectively sleeved and positioned on the first spring sleeve column and the second spring sleeve column. In the present invention, the base and the movable pin are both provided with the spring sleeve column, which is not only convenient to mount and position the compression spring during assembly, but also can prevent the compression spring from falling out due to the shaking of dumbbells in use.

A connector assembly includes a shaft and a first annular knob fixed to the shaft and a second annular knob releasably engaged with the shaft. Each of the first and second annular knobs includes a front face, a face, and a central passage that receives the shaft. The central passage has first, second, and third sections. The width of each first section is greater than the width of the third section, and the width of the second section is greater than the width of the first section. The second section defines an annular slot between the first and third sections.

A barbell including a bar member, a first side weight assembly and a second side weight assembly. The bar member has a first side sleeve region and a second side sleeve region opposite the first side sleeve region. The first side weight assembly includes a weight surface and extends over the first side sleeve region, and is rotatively coupled to the bar member through an inner and outer slidable engagement surface. The second side weight assembly includes a weight surface and extends over the second side sleeve region, and is rotatively coupled to the bar member through an inner and outer slidable engagement surface. The bar member includes a first and second surface enhanced region, the first surface enhanced region spanning a portion of the central region and the first side sleeve region, and with the second surface enhanced region spanning a portion of the central region and the second side sleeve region.

A weight adjustable dumbbell, which includes a dumbbell bar assembly, a dumbbell base and a plurality of dumbbell plates placed on two sides of the dumbbell base. The dumbbell bar assembly includes a plurality of synchronously rotatable hanging plates arranged adjacently, an end of each of the hanging plates is provided with an extruded hanging block. An end of each of the dumbbell plates is defined with a U-shaped groove where the hanging block is radically slidable, a bump is provided in the U-shaped groove, and the bump and a wall of the U-shaped groove define a limiting area therebetween, the hanging block can slide into the limiting area and be latched with the bump during the hanging block rotating in the U-shaped groove.