WEIGHT TRAINING SLED WITH ENHANCED COMPONENT FORCE EFFECT

Abstract

A weight training sled with enhanced component force effect is disclosed, the sled including: a main frame with first and second ends remote from each other; a push frame, erected at the first end of the main frame; an operating handle, erected at the second end; a resistance wheel, in a rotatable state, disposed at the first end and equipped with a damping structure for providing a damping effect to retard the rolling of the resistance wheel; two wheels, in a rotatable state, disposed at either side of the second end, allowing the main frame to be displaced by utilizing the rolling of each of the wheels and the resistance wheel; and wherein, the height of the first end of the main frame is lower than the height of the second end, relatively causing the second end to have an upward inclination angle θ which is between 3° and 30°.

Description

CROSS-REFERENCE TO RELATED U.S. APPLICATIONS

Not applicable.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to a weight training device, and more particularly to an innovative structural design of a weight training sled with enhanced component force effect.

2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 37 CFR 1.98

The weight training sled referred to in the present invention is an inventive weight training apparatus developed recently. It mainly includes a slide board to load a weight. A particular example of the loading weight is weight plates. When the user pushes or pulls the slide board, the friction between the slide board and the ground will generate a resistance so as to realize the purpose of weight training. The training intensity can be adjusted by altering the quantity of additional weight. When pushing or pulling the slide board, the slide board and the ground will respectively have frictional wear. Therefore, weight training sleds are unsuitable for indoor use.

In view of the aforementioned problem of the weight training sled, the industry has developed a wheeled weight training sled. The slide board is additionally configured with four wheels. The movement of the wheels of the slide board can solve the problem of frictional wear of the slide board and the ground, and is therefore suitable for indoor use. The wheels of the wheeled weight training sled is further configured with a damping structure. When the wheels roll on the ground, the damping structure provides a damping effect, acting as another source of resistance in addition to the weight plates loaded on the slide board. The slide board is usually configured with handlebars for the user grip with both hands so as to apply a force to push or pull the weight training sled.

However, in actual application experiences, it is discovered that such prior-art weight training sled still has the following problems: besides the adjustable variation in resistance from additional weight, it fails to offer users a more diverse and enriched sense of control. Consequently, the weight training sled lacks variability and variation in the user's experience, highlighting the importance for the industry to continue contemplating breakthroughs and improvements in this essential technical aspect.

BRIEF SUMMARY OF THE INVENTION

The main objective of the present invention is to provide a weight training sled with enhanced component force effect, aiming to make an innovative breakthrough by developing a more ideal and practical new design of a weight training sled.

Based on the aforementioned objective, the present invention provides a weight training device that has the effect of adjusting the weight center of the loading weight, which comprises: a main frame, comprising a first end and a second end remote from each other; a push frame, erected at the first end of the main frame; an operating handle, erected at the second end of the main frame; a resistance wheel, in a rotatable state, disposed at the first end and equipped with a damping structure for providing a damping effect to retard the rolling of the resistance wheel; two wheels, in a rotatable state, disposed at either side of the second end, allowing the main frame to be displaced by utilizing the rolling of each of the wheels and the resistance wheel; and wherein, the height of the first end of the main frame is lower than the height of the second end, relatively causing the second end to have an upward inclination angle θ which is between 3° and 30°.

With this innovative structural configuration and technical features, the present invention, in comparison to prior art, enables different push resistance effects based on the user's pushing direction, providing users with diverse and enriched muscular strength training experiences and effects. Consequently, the weight training sled's functionality and product value are further enhanced, representing practical progress.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a perspective view of a preferred embodiment of the present invention of a weight training sled.

FIG. 2 is a side view of a preferred embodiment of the present invention of a weight training sled.

FIG. 3 is a schematic view I of a preferred embodiment of the present invention of a weight training sled showing the effect of using component forces.

FIG. 4 is a schematic view II of a preferred embodiment of the present invention of a weight training sled showing the effect of using component forces.

FIG. 5 is a schematic view of a variation of the weight training sled of the invention.

FIG. 6 is a status view of the component forces when the user pushes the main frame to advance via the push frame on the first end.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 to FIG. 5 depict a preferred embodiment of the weight training sled with enhanced component force effect. However, such a preferred embodiment is for illustrative purposes only, and is not intended to limit the scope of the invention.

The weight training sled with enhanced component force effect has a main frame 10, comprising a first end 11 and a second end 12 remote from each other. A push frame 20 is erected at the first end 11 of the main frame 10. An operating handle 30 is erected at the second end 12 of the main frame 10. A resistance wheel 40, in a rotatable state, is disposed at the first end 11 and is equipped with a damping structure 41 for providing a damping effect to retard the rolling of the resistance wheel 40. Two wheels 50, in a rotatable state, are disposed at either side of the second end 12, allowing the main frame 10 to be displaced by utilizing the rolling of each of the wheels 50 and the resistance wheel 40. The height of the first end 11 of the main frame 10 is lower than the height of the second end 12, relatively causing the second end 12 to have an upward inclination angle θ which is between 3° and 30°.

Referring to FIG. 1 and FIG. 2, in this embodiment, the main frame 10 is further provided with a weight load holder 60 that allows the user to load a weight member 61 selectively (can be, but not limited to weight plates).

Referring to FIG. 5, in this embodiment, the second end 12 of the main frame 10 is further provided with a pulling connection portion 70 that allows for the assembly of a pulling member 71 (can be, but not limited to a noose).

Referring to FIG. 1 and FIG. 2, in this embodiment, the operating handle 30 comprises two Y-shaped handlebars 31 in a spaced apart configuration.

Based on the above structural design and technical features, in actual application of the weight training sled with enhanced component force effect disclosed in the present invention, because the second end 12 of the main frame 10 has an upward inclination angle θ, different pushing directions of the user can generate different pushing resistance effects. Firstly, as shown in FIG. 3, when the main frame 10 advances toward its relative upward inclined end (i.e., second end 12), it will generate a relatively large upward component force (Y1), thus the resistance value (F1) during the pushing is relatively reduced; on the contrary, as shown in FIG. 4, when the main frame 10 advances toward its relative downward inclined end (i.e., first end 11), due to the relatively larger downward component force (Y2), the resistance value (F2) during the pushing is relatively larger. As a result, users can obtain a more diverse and rich muscle training experience and effect by pushing the main frame 10 from different ends, thereby further enhancing the functionality and product value of the weight training sled.

The inclination of the main frame 10 in this invention has another advantage. When, in the traction mode, the user pulls the main frame 10, as shown in FIG. 5, the user can optionally pull the upward inclined end (i.e., second end 12) to move the main frame 10. As the pulling position is usually above the waist of the user, with a large height difference from the main frame 10, the inclined design of the main frame 10 perfectly makes up for this height difference, providing a more smooth traction path, meanwhile avoiding perking of the pulled end (i.e., second end 12) of the main frame 10. In this way, the traction is more stable and smooth.

FIG. 6 shows the status of the component forces when the user pushes the main frame 10 to advance via the push frame 20 of the first end 11. Here, (F3) represents the downward and forward force by the user via the push frame 20, and (F1) indicates the resistance value generated on the upward inclined end of the main frame 10. This illustration indicates that, in application of the invention, by pushing the main frame 10 from different ends, the user can obtain diversified muscle training feelings and effects.

Specifically, the two wheels 50 are in the form of omni-directional wheel that turn freely. In this embodiment, based on the configuration of the wheels 50 in the form of omni-directional wheel, together with the inclined design of the main frame 10, when the user turn and control the main frame 10 (see FIG. 3 and FIG. 4), less effort is needed. Moreover, when no force is applied, the inclined main frame 10 also has a guiding and positioning function upon the omni-directional wheels 50.

Claims

1. A weight training sled with enhanced component force effect, comprising: a main frame comprising a first end and a second end remote from each other; a push frame, erected at the first end of the main frame; an operating handle erected at the second end of the main frame; a resistance wheel in a rotatable state, disposed at the first end and equipped with a damping structure for providing a damping effect to retard the rolling of the resistance wheel; two wheels in a rotatable state, disposed at either side of the second end, allowing the main frame to be displaced by utilizing the rolling of each of the wheels and the resistance wheel; and wherein, the height of the first end of the main frame is lower than the height of the second end, relatively causing the second end to have an upward inclination angle which is between 3° and 30°.

2. The weight training sled with enhanced component force effect according to claim 1, wherein the main frame is further provided with a weight load holder that allows the user to load a weight member selectively.

3. The weight training sled with enhanced component force effect according to claim 1, wherein the second end of the main frame is further provided with a pulling connection portion that allows for the assembly of a pulling member.

4. The weight training sled with enhanced component force effect according to claim 1, wherein the operating handle comprises two Y-shaped handlebars in a spaced apart configuration.

5. The weight training sled with enhanced component force effect according to claim 1, wherein the two wheels are of an omni-directional wheel type capable of free rotation.