TERRAIN-ADAPTIVE WEIGHT TRAINING SLED WITH FREE STEERING

Abstract

A terrain-adaptive weight training sled with free steering including: a main frame with first and second ends remote from each other; a resistance wheel rotatably disposed on the first end and having a damping structure; two rotatable and freely steerable omni-wheels disposed on both sides of the second end; and a pulling member having a connecting end, a user-operated end, and a flexible extension section, the connecting end being used to connect with the second end of the main frame and the user-operated end being used for the user to apply force for pulling. The height of the first end is lower than the second end, relatively causing the second end to have an upward inclination angle which is between 6 and 15. When the user pulls the second end to turn by the pulling member, the two omni-wheels are driven to produce a turning motion thereafter.

Claims

1. A terrain-adaptive weight training sled with free steering, comprising: a main frame having a first end and a second end remote from each other; a resistance wheel rotatably disposed on the first end and assembled with a damping structure to provide a damping effect to retard the rolling of the resistance wheel; two omni-wheels in a rotatable and freely steerable state, disposed on both sides of the second end, allowing the main frame to be displaced by utilizing the rolling of each omni-wheel and the resistance wheel; and a pulling member having a connecting end, a user-operated end, and an extension section between the connecting end and the user-operated end, wherein the connecting end being used to connect with the second end of the main frame, and the user-operated end being used for a user to apply a force for pulling; whereby, when the user guides the second end to turn by means of the pulling member, the two omni-wheels are driven to produce a turning motion; 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 6 and 15.

2. The terrain-adaptive weight training sled with free steering according to claim 1, wherein, the main frame is further provided with a weight loading holder that allows the user to selectively load a weight member.

3. The terrain-adaptive weight training sled with free steering according to claim 1, wherein, a pulling connection portion is provided at the second end of the main frame for connection to the connecting end of the pulling member.

4. The terrain-adaptive weight training sled with free steering according to claim 3, wherein, the pulling connection portion includes two spaced apart clasps that allow the connecting end of the pulling member to be aligned accordingly, resulting in the formation of two separate hooking cables.

5. The terrain-adaptive weight training sled with free steering according to claim 1, wherein, the user-operated end of the pulling member is of one of the following types: a hand loop, a chest strap, a shoulder strap, a girdle, or a lasso.

6. The terrain-adaptive weight training sled with free steering according to claim 1, wherein, the second end of the main frame is erected with two handlebars in a spaced-apart configuration.

7. The terrain-adaptive weight training sled with free steering according to claim 6, wherein, the two handlebars are provided for coupling the connecting end of the pulling member to the second end of the main frame.

8. The terrain-adaptive weight training sled with free steering according to claim 1, wherein, a push frame provided at on the first end of the main frame.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0009] FIG. 1 is an assembled three-dimensional view of a preferred embodiment of the weight training sled of the present invention.

[0010] FIG. 2 is another view of the second end of the main frame of the preferred embodiment of the weight training sled of the present invention.

[0011] FIG. 3 is a first schematic view of the present invention in which the pulling member guides the second end to turn and drives the two omni-wheels to make a turning movement along with it.

[0012] FIG. 4 is a second schematic view of the present invention in which the pulling member guides the second end to turn and drives the two omni-wheels to make a turning movement along with it.

[0013] FIG. 5 is a side view of the user guiding the second end through the pulling member of the present invention.

[0014] FIG. 6 is a schematic view I of a preferred embodiment of the present invention of a weight training sled showing the effect of relatively causing the second end to have an upward inclination angle .

[0015] FIG. 7 is a schematic diagram of the user operating end of the pulling member which can be implemented to change different patterns of the present invention.

[0016] FIG. 8 is an embodiment diagram of the present invention in which two handlebars are used to couple with the connecting end of the pulling member to connect with the second end of the main frame.

[0017] FIG. 9 is an embodiment diagram of the present invention in which the connecting end of the pulling member is coupled to the weight loading holder of the main frame to connect to the second end.

DETAILED DESCRIPTION OF THE INVENTION

[0018] Referring to FIGS. 1 to 6, a preferred embodiment of a terrain-adaptive weight training sled with free steering of the present invention is shown herein, but such embodiment is for illustrative purposes only and should not be construed as a limitation of the structure in a patent application.

[0019] The weight training sled comprises a main frame 10 having a first end 11 and a second end 12 remote from each other. A push frame 20 is erected on the first end 11 of the main frame 10. A resistance wheel 30 is rotatably disposed on the first end 11 and assembled with a damping structure 31 to provide a damping effect to retard the rolling of the resistance wheel 30. Two omni-wheels 40, in a rotatable and freely steerable state, are disposed on both sides of the second end 12, allowing the main frame 10 to be displaced by utilizing the rolling of each omni-wheel 40 and the resistance wheel 30. A pulling member 60 has a connecting end 61, a user-operated end 62, and a flexible extension section 63 between the connecting end 61 and the user-operated end 62, wherein the connecting end 61 being used to connect with the second end 12 of the main frame 10, and the user-operated end 62 being used for a user 70 to apply a force for pulling. When the user 70 guides the second end 12 to turn by means of the pulling member 60, the two omni-wheels 40 can be driven to produce a turning motion. 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 which is between 6 and 15 (Referring to FIG. 6).

[0020] As shown in FIG. 1, in this embodiment, the main frame 10 is further provided with a weight loading holder 13 that allows the user 70 to selectively load a weight member 14 (which may be, but is not limited to, the use of a weight plate).

[0021] As shown in FIG. 3, in this embodiment, a pulling connection portion 50 is provided at the second end 12 of the main frame 10, which includes two spaced apart clasps 51 that allow the connecting end 61 of the pulling member 60 to be aligned accordingly, resulting in the formation of two separate hooking cables.

[0022] Wherein, the user-operated end 62 of the pulling member 60 is of one of the following types: a hand loop, a chest strap, a shoulder strap, a girdle, or a lasso. For example, the user-operated end 62 shown in FIG. 1 is of the shoulder strap type; another user-operated end 62B shown in FIG. 6 is of the hand loop type; another user-operated end 62C shown in FIG. 6 is of the chest strap type; another user-operated end 62D shown in FIG. 6 is of the girdle type; and another user-operated end 62E shown in FIG. 6 is of the lasso type.

[0023] As shown in FIG. 1, in this embodiment, the second end 12 of the main frame 10 is erected with two handlebars 15 in a spaced-apart configuration. In this embodiment, the two handlebars 15 are provided to allow the user 70 to operate the second end 12 in a pushing mode directly through these two handlebars 15 when the second end 12 is not being operated in a pulling mode by the pulling member 60.

[0024] As further shown in FIG. 7, the two handlebars 15 are provided for coupling the connecting end 61 of the pulling member 60 to the second end 12 of the main frame 10.

[0025] Based on the above-described structural configuration and technical features, the following is a description of the operation of the preferred embodiment of the terrain-adaptive weight training sled with free steering of the present invention: As shown in FIGS. 3 and 4, when the user 70 guides the second end 12 of the main frame 10 to make a turn through the pulling member 60 (as shown by arrows L1 and L2), the two omni-wheels 40 are thus driven to produce a turning motion, thereby achieving a flexible steering that can adapt to the terrain (note: including flat and undulating terrain) which enhances the practical progress of operating convenience; more specifically, in the process of the user 70 pulling the main frame 10 to move forward through the pulling member 60, with the change of the pulling direction of the user 70, the second end 12 is automatically steered to cope with the change, thus allowing the user 70 to maneuver the weight training sled more easily and without obstacles over a smaller range of motion due to the flexible steering feature.

[0026] The benefit of the frame tilt is that when the user pulls the second end 12 of the main frame 10, since the user's towing force is usually above the waist, which has a large difference in height from the frame, the tilting angle feature of the main frame 10 can just make up for this difference, making the towing path smoother and preventing the second end 12 of the main frame 10 from floating, making the towing action more stable and smooth.

[0027] As shown in FIG. 8, the implementation of the present invention also does not exclude that the connecting end 61 of the pulling member 60 can be coupled to the weight loading holder 13 of the main frame 10, thereby achieving an embodiment of connecting the second end 12. In summary, as can be seen from the above embodiments, there are a variety of specific embodiments in which the pulling member 60 of the present invention can be connected to the second end 12 of the main frame 10, provided that the user 70 can change it according to his needs.