The present disclosure relates generally to an ergonomic handle for transferring a force, such as to use with exercise equipment in a gym. More particularly, the disclosure relates to a gym handle with a conical grip designed to comfortably fit the natural anatomical shape of a human hand grasping the handle, where the handle features a grip having a conical shape and size designed for optimal hand fit and load transfer, and an integrated rope or strap for connection to load-bearing exercise equipment. Designs featuring a tubular bar fitted in a central opening of the conical grip are also disclosed.
Hand grips are used with varying degrees of comfort in the operation of a variety of devices, including grips for using exercise equipment. One known type of hand grip, a two-handed grip 100 used on an exercise machine as shown in
An additional problem with the grips shown in
Another known grip design is the single-hand grip 200 shown in
The prior art grips described above all suffer from significant limitations. First, the simple cylindrical shape of the grip surface is not designed to match the anatomical shape of the human hand when grasping in a normal fashion, and does not effectively distribute load across the surface of the user's hand. This can make conventional grips uncomfortable to use for various load directions, leading to hand fatigue. In addition, the simple cylindrical shape of the grip surface does not assist in transferring load from the user's hand along the length of the grip handle. This fact has led to the addition of the grip stops and grip guards discussed above; however, the resulting concentrated load on one end of the hand—such as the outer surface of the pinky finger—is also uncomfortable and inefficient.
In view of the circumstances described above, there is a need for an improved handle for use with exercise equipment, especially the type of equipment where a tensile load is borne by a single hand.
The present disclosure describes a handle assembly for coupling to exercise equipment such as resistance bands or weights. The handle assembly includes a grip handle having a conical elastomeric grip element fitted over a tubular bar, where the grip element is defined by an increasing outer surface circumference along its length to form a conical shape for the user to grasp. The conical grip handle is designed to fit the natural anatomical shape of the user's hand when grasping. The grip element is constructed of an elastomeric material that is slightly compressible while maintaining its shape, and which may have a slightly tacky surface feel.
A rope has both ends secured inside the tubular bar such that the rope forms a loop outside the grip handle, where the rope is connected to the exercise equipment via a quick link, ring or pulley. End caps fitted into the ends of the tubular bar have openings which allow the rope ends to pass through into the interior of the bar, and the openings have smooth curved inside surfaces to prevent chafing of the rope. The end caps may be threaded, press-fit or glued into the ends of the tubular bar. The ends of the rope are either knotted or crimped together inside the tubular bar, or the ends are each knotted separately to ensure the rope ends remain inside the bar. A strap may be provided rather than a rope, and a design without the tubular bar in the central opening of the conical grip is disclosed.
The generally cone-shaped grip provides a comfortable and ergonomic surface to securely distribute the user's grasp force during the exercise movements, thus significantly reducing the pressure points and grip effort compared to current exercise handles and thus allowing a relaxed hand grip.
Additional features of the present disclosure will become apparent from the following description and appended claims, taken in conjunction with the accompanying drawings.
The following discussion of the embodiments of the disclosure directed to a gym handle with a conical grip is merely exemplary in nature, and is in no way intended to limit the disclosure or its applications or uses.
Exercise grips and grip handles have traditionally been designed with a simple cylindrical shape which is not anatomically suited to a user's grasp, and which does not offer any assistance in bearing an axial load along the grip. As a result, grips such as those shown in
The gym handle of the present disclosure is designed to overcome the shortcomings and limitations of current grips and grip handles. The disclosed gym handle features a conical grip shape which is designed to match the natural anatomical shape of the user's grasp. This conical shape reduces hand fatigue, and also enables the user to apply an axial force along the length of the grip without requiring excessive squeezing effort.
A coupling device—such as an eye loop pulley 370, a quick connect link 380, a carabiner (not shown), a ring (not shown) or an eye-to-eye swivel (not shown)—connects the gym handle 300 to a tensile member 390 of an exercise equipment apparatus (not shown). The tensile member 390 may be, for example, a resistance band with a distal end fixed to a structure, or a cable which passes over a pulley arrangement to raise and lower weights. An eye-to-eye swivel coupling device allows the gym handle to spin or rotate when attached to an exercise apparatus. This is helpful to orient the grips, especially when two gym handles can be attached to the same exercise apparatus for bilateral (two hand) movements.
The gym handle 300, and particularly the conical grip element 320, provide significant advantages over prior art grip handles. The conical shape of the grip element 320 matches the natural anatomical shape of the hand of a user grasping the grip element 320. That is, the thumb and forefinger of the user's hand form an approximate circle around the smaller diameter end of the grip element 320 (at the top as shown in
In addition, the conical shape of the grip element 320 serves as a wedge which allows the user's hand to apply an axial force (from the smaller diameter end toward the larger diameter end) without having to rely solely on grip pressure (hand squeezing force) and friction. In some exercise movements, such as where the user pulls the gym handle 300 towards himself/herself and down (to the left and down in
The conical grip element 320 is preferably constructed of an elastomeric material which offers some compliance or flexibility when grasped by the user, and may be slightly tacky to the touch. The slight compressibility of the conical grip element 320 adds to the grip comfort for the user, however the hardness is such that it does not deform in shape or bend. The proper selection of material aids in a more secure relaxed grasp. Materials are discussed further below.
The outer surface of the conical grip element 320 may be smooth, or the surface may have any of a variety of shapes or patterns formed into or upon it. In one preferred embodiment, a spiral groove is formed into the surface of the conical grip element 320, where the spiral groove extends continuously from one end of the grip element 320, around the surface in a conic helical shape, to the other end of the grip element 320. This embodiment is shown in
The gym handle 300 of the present disclosure may be used with exercise equipment in many different ways. Exercises which may be performed using the gym handle 300 include curls, “lat” pulls, chest press, flies, rows, triceps pushdowns and overhead triceps extensions, and many others. In these exercises, the gym handle 300 may be pulled upward against the vertically-oriented tensile member 390, pulled or pushed downward against the vertically-oriented tensile member 390, pulled or pushed horizontally against the horizontally-oriented tensile member 390, or in any other direction or configuration.
The conical grip element 320 has a first end 322 with a smaller diameter, and a second end 324 with a larger diameter. Typically the diameter of the first end 322 is from about 0.75 inches to about 1.5 inches, preferably about 1.0 inch. The diameter of the second end 324 is greater than the diameter of the first end 322 by an amount that forms a cone angle in a range from 10° to 35°, preferably from 15° to 30°, most preferably about 18°. When the cone angle is below 10° the user does not receive the full benefit of the distribution of the resistance force across the user's hand, thus requiring more grip strength to hold onto the grip handle. When the cone angle is greater than about 35° the grip element 320 is uncomfortable to grasp and the grip force is unequally concentrated rather than distributing over the entire hand. A first end diameter of about 1.0 inch and a cone angle of about 18° has been determined to be an optimal shape and size for the vast majority of user's hands.
The length of the conical grip element 320 from the first end 322 to the second end 324 may vary somewhat but is generally from about 4.0 inches to about 6.5 inches, most preferably 4.75 inches. This length ensures that the gym handle 300 fits well for those users with smaller hands as they can grasp near the first end 322, while those with larger hands can have enough grip length to comfortably grasp as well.
Additionally, the outer surface of the conical grip element 320 may have a shape which is not a true straight-sided cone, but may have other similar designs with increasing circumference over the length of the grip. For example, the conical grip element 320 may have a circumference which increases continuously from the first end 322 to the second end 324, and an outer surface shape which is outwardly convex.
The conical grip element 320 is preferably constructed of a rubber-like material, for example, a viscoelastic, urethane or closed cell foam material. It is conceived that a wide range of materials with varying durometer hardness could be used for the conical grip element 320, ranging from very soft and compliant to very firm and minimally compliant. It is preferable that such materials have a hardness in the range between Shore 20-00 (very soft) and Shore 90A (very firm). Any elastomeric or similar material—including natural or synthetic rubbers, foams, cork, etc.—meeting this hardness range, and preferably being slightly tacky or sticky to the touch, may be used to make the conical grip element 320. A hardness of 65A-75A is the most preferable for the conical grip element 320.
The conical grip element 320 has the conical (or similar) outer surface shape as described above and shown in
The end caps 340 are formed with an aperture 342 through which the rope 350 passes. Interior surfaces 344 of the aperture 342 are shaped with a smooth, convex surface so that the rope 350 may rub against the surfaces 344 without chafing the rope 350.
The end cap 340 on one end of the tubular bar 330 may be identical to the end cap 340 on the other end of the tubular bar 330, or the two end caps 340 may have a somewhat different design or shape. A flange-like lip 346 may be included on the end caps 340, where the lip 346 prevents the rope 350 from pinching the user's hand against the conical grip element 320, and the lip 346 also prevents the grip element 320 from moving axially along the tubular bar 330. In various embodiments, the lip 346 may be larger than shown in
The tubular bar 330 is constructed of any suitably rigid material—including metals such as steel or aluminum, or structural thermoplastics or composites. Preferred embodiments include making the tubular bar 330 from metal tubing suitable for forming screw threads on interior surfaces at both ends, or from metal tubing suitable for allowing a press fit of the ends caps 340 into the ends of the tubular bar 330.
The end caps 340 may also be constructed of any suitably rigid material—including metals such as steel or aluminum, or structural thermoplastics or composites. Preferred embodiments include casting or machining the end caps 340 from aluminum, suitable for forming screw threads on exterior surfaces of the end caps 340 to be threaded into the ends of the tubular bar 330, or suitable for allowing a press fit of the ends caps 340 into the ends of the tubular bar 330. Another embodiment is envisioned where both the tubular bar 330 and the end caps 340 are made of rigid plastic or a composite possibly including carbon fiber, and the end caps 340 are glued into the tubular bar 330 for assembly.
The grip assembly 310 is shown in an assembled configuration in
In a preferred embodiment of an assembly method for the gym handle 300, the conical grip element 320 is first pressed onto the tubular bar 330, such that the tubular bar 330 fits snugly (friction fit) inside the central cylindrical hole in the grip element 320. The end caps 340 are then slipped over the two ends of the rope 350, where the end caps 340 are oriented so as to later be installed into the tubular bar 330. One end of the rope 350 is then passed into one end of the tubular bar 330 and all the way through the tubular bar 330 and out the opposite end. The two ends of the rope 350 are now proximal, outside the tubular bar 330, and may be fastened together using the crimping ferrule 610 or the rope-to-rope knot 620. Alternately, the stopper knot 630 may be tied in each end of the rope 350. The ends of the rope 350 are then drawn back inside the tubular bar 330, and the end caps 340 are fitted into the ends of the tubular bar 330—such as by threading, press fit, or using an adhesive. A slightly different assembly sequence may easily be envisioned, such as installing one of the end caps 340 into an end of the tubular bar 330 immediately before or immediately after pressing the conical grip element 320 onto the tubular bar 330.
In addition to the embodiments shown in
A grip assembly 910 comprises a conical grip element 920 fitted over a tubular bar 930. The conical grip element 920 is substantially the same as the conical grip element 320 discussed at length earlier—including shape, dimensions, materials, surface pattern, etc. The tubular bar 930 is positioned inside a central cylindrical opening in the conical grip element 920, where the conical grip element 920 may be directly over-molded on the tubular bar 930, or the conical grip element 920 may be pressed onto the tubular bar 930. The tubular bar 930 provides rigidity (bending resistance) to the grip assembly 910, but has a different design than the tubular bar 330 discussed earlier. The tubular bar 930 is shown in
In the gym handle 900, a strap element 940 is used as a tensile member, replacing the rope of
The tubular bar 930 may be constructed of any suitable lightweight and rigid material—such as plastic, composite or aluminum. In a preferred embodiment, the tubular bar 930 is formed as a single piece, where a molded plastic piece is most preferred. The gym handle 900 may be assembled by placing the D-ring 950 over one end of the strap element 940 and positioning the D-ring 950 at approximately mid-length of the strap element 940, forming the fixed section 942 such as by sewing, thus constraining the D-ring 950 in the small end loop of strap material, passing one free end of the strap element 940 through the grip assembly 910, and attaching the two free ends of the strap element 940 such as by sewing. The sewn-together end of the strap element 940 can then be moved back inside the grip assembly 910, resulting in the assembled gym handle 900 as shown in
The conical grip element 1120 is molded or formed as a single piece, and has a central cylindrical hole 1122. End caps 1140 may be provided, which have a similar design and features as the end caps 340 discussed earlier. However, because there is no tubular bar, the end caps 1140 are fitted directly into the ends of the conical grip element 1120. The end caps 1140 may be press-fit, glued or screwed into the ends of the conical grip element 1120.
The conical grip element 1120 may be constructed of a composite stabilized rubber (which adds some rigidity) or a harder rubber or other material, so that it is stiff enough not to bend under load. With some grip element materials, no end caps are needed, and the central cylindrical hole 1122 has inner facing surfaces on both ends which are convexly curved for smooth interface with the flexible tensile member. The conical grip element 1120 may be used with a rope as a flexible tensile member (as in
The conical grip element in the various embodiments of the present disclosure has an ergonomic shape designed to match the natural anatomical shape of the user's hand, providing a secure grasp without requiring the user to apply a very tight grasp pressure. The ergonomic grip shape also reduces fatigue in the user's hand, making the grasping more comfortable. Additionally, in the disclosed gym handles, the grip force is distributed across a larger surface area of the user's hand compared to the grip shown in
The foregoing discussion discloses and describes merely exemplary embodiments of the present disclosure. One skilled in the art will readily recognize from such discussion and from the accompanying drawings and claims that various changes, modifications and variations can be made therein without departing from the spirit and scope of the disclosure as defined in the following claims.
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