UPRIGHT BIKE WITH PULL TRAINING FUNCTION

Abstract

An upright bike includes a main frame including a front portion and a rear portion. A rail structure is connected to the rear portion of the main frame. An X-shaped frame is slidably mounted to the rail structure and pivotally connected to the front portion of the main frame. A slide end is formed on the X-shaped frame and slidably mounted onto the rail structure. A stepping structure is mounted on a lower section of the first trestle of the X-shaped frame. A seat is secured on a top of the first trestle of the X-shaped frame. A handlebar is transversally secured on the X-shaped frame. A restitute element has two opposite ends respectively secured on the first trestle and the second trestle of the X-shaped frame for providing restitution force to the X-shaped frame when the handlebar is upwardly pulled.

Claims

1. A upright bike with pull training function, comprising: a main frame including a front portion and a rear portion; a rail structure connected to the rear portion of the main frame; an X-shaped frame slidably mounted to the rail structure and pivotally connected to the front portion of the main frame, the X-shaped frame including a first trestle and a second trestle each having a middle portion laterally pivotally connected to each other by a pivot axle that extends through the first trestle and the second trestle, a hinge end formed on a lower portion of the first trestle and pivotally connected to the front portion of the main frame, a slide end formed on a rear end of the second trestle and slidably mounted onto the rail structure; a stepping structure mounted on a lower section of the first trestle of the X-shaped frame, the stepping structure including a crank rotatably extending through the first trestle of the X-shaped frame, two pedals respectively pivotally mounted on two opposite ends of the crank, a damping device rotatably mounted to the first trestle of the X-shaped frame and rotated with the crank for promoting the exercise effect of the upright bike; a seat secured on a top of the first trestle 31 of the X-shaped frame; a handlebar transversally secured on a top of the second trestle of the X-shaped frame, the slide end of the second trestle moved along the rail structure and the seat secured on the top of the first trestle being lifted when the handlebar is upwardly pulled; and a restitute element having two opposite ends respectively secured on the first trestle and the second trestle of the X-shaped frame for providing restitution force to the X-shaped frame when the handlebar is upwardly pulled.

2. The upright bike as claimed in claim 1, wherein the rail structure includes two T-shaped grooves respectively defied in two opposite sides thereof, the slide end formed with two stems each having a roller laterally mounted thereon, wherein each roller is moved in a corresponding one of the two T-shaped grooves.

3. The upright bike as claimed in claim 2, wherein the restitute element includes at least one spring.

4. The upright bike as claimed in claim 2, wherein the restitute element includes at least one resilient rope.

5. The upright bike as claimed in claim 3, wherein the front portion and the rear portion of the main frame respectively have a first joint and a second joint secured thereon, wherein a first locking pin and a second locking pin selectively and respectively extend through the first joint and the second joint for providing a folding function to the main frame of the upright bike.

6. The upright bike as claimed in claim 4, wherein the front portion and the rear portion of the main frame respectively have a first joint and a second joint secured thereon, wherein a first locking pin and a second locking pin selectively and respectively extend through the first joint and the second joint for providing a folding function to the main frame of the upright bike.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0014] FIG. 1 is a perspective view of an upright bike with a pull training function in accordance with the present invention.

[0015] FIG. 2 is a side plan view of the upright bike in FIG. 1.

[0016] FIG. 3 is a partially exploded perspective view of the upright bike in FIG. 1.

[0017] FIG. 4 is a partially cross-sectional view of the upright bike in FIG. 1.

[0018] FIG. 5 is another partially exploded perspective view of the upright bike in FIG. 1.

[0019] FIG. 6 is a schematic view of the upright bike in FIG. 1.

[0020] FIG. 7 is a first operational view of the upright bike in accordance with the present invention.

[0021] FIG. 8 is a second operational view of the upright bike in accordance with the present invention.

[0022] FIG. 9 is a side plan view of the upright bike when being folded.

DETAILED DESCRIPTION OF THE INVENTION

[0023] Referring to the drawings and initially to FIGS. 1-4, an upright bike A with pull training function in accordance with the present invention comprises a main frame 10 including a front portion 11 and a rear portion 12. A rail structure 20 is connected to the rear portion 12 of the main frame 10, and backward and upwardly extends. An X-shaped frame 30 is slidably mounted to the rail structure 20 and pivotally connected to the front portion 11 of the main frame 10. The X-shaped frame 30 includes a first trestle 31 and a second trestle 32 each having a middle portion laterally pivotally connected to each other by a pivot axle 33 that extends through the first trestle 31 and the second trestle 32. A hinge end 315 is formed on a lower portion of the first trestle 31 and pivotally connected to the front portion 11 of the main frame 10. A slide end 325 is formed on a rear end of the second trestle 32 and slidably mounted onto the rail structure 20. A stepping structure 40 is mounted on a lower section of the first trestle 31 of the X-shaped frame 30. The stepping structure 40 includes a crank 41 rotatably extending through the first trestle 31 of the X-shaped frame 30. Two pedals 42 are respectively pivotally mounted on two opposite ends of the crank 41. A damping device 43 is rotatably mounted to the first trestle 31 of the X-shaped frame 30 and rotated with the crank 41 for promoting the exercise effect of the upright bike A in accordance with the present invention. A seat 50 is secured on a top of the first trestle 31 of the X-shaped frame 30. A handlebar 60 is transversally secured on a top of the second trestle 32 of the X-shaped frame 30. The slide end 325 of the second trestle 32 is moved along the rail structure 20 and the seat 50 secured on the top of the first trestle 31 is lifted when the handlebar 60 is upwardly pulled. A restitute element 70 has two opposite ends respectively secured on the first trestle 31 and the second trestle 32 of the X-shaped frame 30 for providing restitution force to the X-shaped frame 30 when the handlebar 60 is upwardly pulled.

[0024] With reference to FIGS. 3 and 4, the rail structure 20 has two T-shaped grooves 21 respectively defied in two opposite sides of the rail structure 20. The slide end 325 is formed with two stems 327 each having a roller 329 laterally mounted thereon, wherein each roller 329 is moved in a corresponding one of the two T-shaped grooves 21.

[0025] The restitute element 70 is at least one spring or at least one resilient rope. In the preferred embodiment of the present invention, the two opposite ends of the restitute element 70 are respectively secured on rear sections of the first trestle 31 and the second trestle 32 of the X-shaped frame 30. Consequently, an angle formed between the first trestle 31 and the second trestle 32 is enlarged and the restitute element 70 is expanded when the handlebar 60 is upwardly pulled, as shown in FIG. 6.

[0026] With reference to FIG. 5, the front portion 11 and the rear portion 12 of the main frame 10 respectively have a first joint 113 and a second joint 115 secured thereon, wherein a first locking pin 124 and a second locking pin 126 selectively and respectively extend through the first joint 113 and the second joint 115 for providing a folding function to the main frame 10 of the upright bike A in accordance with the present invention, as shown in FIG. 9.

[0027] In the structures of the upright bike A in accordance with the present invention, with reference to FIG. 6, the first trestle 31 and the second trestle 32 is pivoted to each other by the pivot axle 33. The first trestle 31 formed with a hinge end 315 pivotally connected to the front portion 11 of the main frame 10 and the second trestle 32 formed with a slide end 325 moved along the rail structure 20. Consequently, the slide end 325 of the second trestle 32 is moved along the rail structure 20, along the arrow L2, and the seat 50 secured on the top of the first trestle 31 is lifted, along the arrow L3, when the handlebar 60 is upwardly pulled, along the arrow L1. By the structure of the upright bike A in accordance with the present invention, in the first operational mode, as shown in FIG. 7, the user sits on the seat 50, holds the two opposite ends of the handlebar 60 and steps on the two pedals 42 of the stepping structure 40. In this mode, the upright bike A in accordance with the present invention is operated as an ordinary upright bike. In the first operational mode, as shown in FIG. 8, during the user upwardly pulling the handlebar 60, the slide end 325 of the second trestle 32 is downward moved along the rail structure 20 and the seat 50 on the top of the first trestle 31 is lifted. In the meanwhile, the user changes his/her posture from sitting posture to stance and the angle of his/her elbow is changed. Consequently, the upright bike A in accordance with the present invention not only trains user's feet, but also trains user's hands, arms, waist and back, especially user's arm due to the action of upwardly pulling the handlebar 60. As a result, the upright bike A in accordance with the present invention has advantageously altered the conventional upright bike that has only one function of train user's feet.

[0028] In addition, the upright bike A in accordance with the present invention achieves the above function by providing the X-shaped frame 30 to the conventional upright bike. Consequently, the upright bike A in accordance with the present invention is easily manufactured and assembled, and has a low cost for mass-produced.

[0029] Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.