TERRAIN-ADAPTIVE WEIGHT TRAINING SLED WITH FREE STEERING

Abstract

A terrain-adaptive weight training sled with free steering, having a main frame with a first end and a second end remote from each other, a push frame erected on the first end, a resistance wheel rotatable disposed on the first end and assembled with a damping structure for retarding the resistance wheel, two omni-wheels, in a rotatable and freely steerable state, 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, wherein 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, whereby when the user pulls the second end to turn by means of the pulling member, the two omni-wheels are driven to produce a turning motion thereafter.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

Not applicable.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a weight training apparatus and more particularly to an innovative structure of a terrain-adaptive weight training sled with free steering.

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 that has been developed and introduced in recent years, which mainly comprises a skid that can load a weighted object, a specific example of the weighted object includes a weight plate, and when the user pushes or pulls the skid, the skid and the ground form a resistance by relative friction, thereby achieving the purpose of weight training, and changing the number of the weighted object that can change the intensity of the training. However, when the user pushes or pulls the skid, the skid causes wear and damage by friction with the ground, which makes the weight training sled unfavorable for use when it is used indoors.

Given the problems of the previously mentioned weight training sled, the relevant industry has therefore developed a weight training sled with wheels, wherein four wheels are provided on the skid which moves by means of the wheels, thereby eliminating the damaging problem caused by the relative contact between the skid and the ground, and allowing the skid to be used indoors; the above-mentioned weight training sled with wheels can further be provided with a damping structure to the wheels, when the wheels roll on the ground, the damping structure provides a damping effect which serves as a source of resistance for retarding the movement in addition to the weights loaded on the skid, and a handlebar is usually provided on the skid in a vertical direction for the user to hold with both hands to facilitate the application of force for pushing or pulling the weight training sled for maneuvering.

However, the following problems are still found in the practical experience of using this type of weight training sled. For example, the wheels of the weight training sled are usually of the orientation straight type, so when the user desires to make a turn, they must lift one end of the sled using the handlebar and then perform the turn simultaneously. This process leads to the current limitations in conventional weight training sleds, including inconvenient steering and the inability to adapt flexibly to different terrains. Therefore, this is an important technical issue worthy of the relevant industry to pursue breakthroughs in improving the technology.

BRIEF SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a terrain-adaptive weight training sled with free steering, and the technical problems it is intended to solve are directed toward the development of a new type of weight training sled structure that is more desirable and practical as a breakthrough in the goal of innovation.

In accordance with the foregoing purposes, the present invention provides 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 push frame erected on the first end of the main frame; 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; a pulling connection portion provided at the second end; and a pulling member having a connecting end, a user-operated end, and a flexible extension section between the connecting end and the user-operated end, the connecting end being used to connect the pulling connecting portion, while the user-operated end is used to provide the user to apply a force for pulling.

With this innovative structure and technical features, the present invention, compared to the prior art, when the user pulls the second end to turn by means of the pulling member, the two omni-wheels can be driven to produce a turning motion, thereby achieving flexible steering to adapt to the terrain, improving practical progress in operating convenience and better utilization of industrial advantages.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

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

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.

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.

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.

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

FIG. 6 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.

FIG. 7 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.

FIG. 8 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

Referring to FIGS. 1 to 5, 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.

The weight training sled comprising a main frame 10 having a first end 11 and a second end 12 remote from each other. A push frame 20 erected on the first end 11 of the main frame 10. A resistance wheel 30 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 having 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.

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).

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.

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.

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.

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.

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.

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.

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 push frame, erected on the first end of the main frame;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; anda 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.

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 1, 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 1, wherein the two handlebars are provided for coupling the connecting end of the pulling member to the second end of the main frame.