GB2380420A

GB2380420A - An exercise bike

Info

Publication number: GB2380420A
Application number: GB0123727A
Authority: GB
Inventors: Tsung-Yu Chen
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-02
Filing date: 2001-10-03
Publication date: 2003-04-09
Also published as: US20030064870A1; DE20116461U1; GB0123727D0

Abstract

An exercise bike comprises a support frame 22 and a first post 21 with a handle 23 fixed to the first post 21 extending from the support frame 22, an elongate member 30 connected to the first post 21 with a first and second hole 31,35 and a second post 24 extending from the elongate member 30 on which is mounted a seat 240, wherein the first hole 31 of the elongate member 30 has a bottom bracket 33 in which is mounted a crank 34 and a first pulley 342, and the second hole 35 has a rear wheel axle 32 extending there through with a second pulley 320 and rear wheel 36 mounted on said rear wheel axle 32 and a driving belt 37 reeved between the two pulleys 342 and 320. The advantage over existing exercise machines is the elongate member 30 allows the driving belt 37 to be reeved in such a way that misalignment is minimised and hence longer belt life is ensured.

Description

CHAIN STAY FOR EXERCISE BIKE

FIELD OF THE INVENTION

The present invention relates to a chain stay for an exerciser bike and the chain stay has two holes for respectively receiving a bottom bracket and a 5 rear wheel axle.

BACKGROUND OF THE INVENTION

A conventional exerciser bike is shown in Figs. 1 and 2 and generally includes an I-shaped frame and a first post 11 extending from the frame. A handle 11] is connected on a top of the first post 11 and an extension bar 10 extends from the post I I. A second post 12 extends from the extension bar so as to be connected to a seat 121. A bottom bracket 13 is connected to the first post 11 and a crank]4 rotatably extends through the bottom bracket 13. Two pedals 141 are connected to two ends of the crank 14 and a first pulley 142 is mounted to the crank 14. A rear wheel 16 is connected below the second post 15 12 and a second pulley 15 is mounted to an axle of the rear whee] 16 A belt 17 reeves the two pulleys 142, 15 so that when rotating the crank 14, the rear wheel 16 is rotated. However, because the bottom bracket 13 and the rear wheel 16 are connected to different parts of the exercise bike so that the two pulleys 142, 15 could not be located in a straight line. If the two pulleys 142, 15 are not 20 located on the same line, the belt 17 tends to be worn out or even broken because of abnormal friction.

The present invention intends to provide an exercise bike that has an elongated member having two holes for respectively receiving the bottom bracket and the rear wheel axle so that the relative position of the bottom bracket and the rear wheel axle is ensured to be correct.

5 SUMMARY OF THE INVENTION

In accordance with one aspect of the present invention, there is provided an exercise bike which comprises a support frame and a first post extends from the support frame and a handle is connected to a top of the first post. An elongated member is connected to the first post and has a first hole 10 and a second hole, A second post extends from the elongated member and a seat is connected to the second post. A bottom bracket is received in the first hole and a crank rotatably extends through the bottom bracket. A first pulley is mounted to the crank. A rear wheel is connected to the elongated member and a rear wheel axle extends through the second hole, A second pulley is mounted to 15 the rear wheel axle. A belt reeves between the first pullet and the second pulley.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which

show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

20 BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is an exploded view to show a conventional exercise bike;

Fig. 2 is a top view to show the conventional exercise bike; Fig. 3 is a side view to show the exercise bike of the present invention; Fig. 4 is a top view to show the exercise bike of the present invention, 5 and Fig. 5 is a perspective view to show the exercise bike of the present . Invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to Figs. 3 to 5, the exercise bike of the present invention 10 comprises a support frame 22 and a first post 21 extends from the support frame 22, and a handle 23 is connected to a top of the first post 21. An elongated member 30 connected to the first post 21 and has a first hole 31 and a second hole 35. A second post 24 extends from the elongated member 30 and a seat 240 is connected to the second post 24. A bottom bracket 33 is received in 15 the first hole 31 and a crank 34 rotatably extends through the bottom bracket 33.

A first pulley 342 is mounted to the crank 34 and two pedals 341 are connected to two ends of the crank 34.

A rear wheel 36 is connected to the elongated member 30 and a rear wheel axle 32 extends through the second hole 35. A second pulley 320 is 20 mounted to the rear wheel axle 32. A belt 37 reeves between the first pullet 342 and the second pulley 320.

It is to be noted that the elongated member 30 is a one-piece member so that the two holes 31, 35 are located in the same line as shown in Fig. 4.

Therefore, the belt 37 can be connected to the two pulleys 342, 320 properly and is operated in the straight line without distortion.

5 While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention

Claims

WHAT IS CLAIMED IS:

1. An exercise bike comprising: a support frame and a first post extending from said support frame, a handle connected to a top of said first post, an elongated member connected to 5 said first post and having a first hole and a second hole, a second post extending from said elongated member and a seat connected to said second post, a bottom bracket received in said first hole and a crank rotatably extending through said bottom bracket, a first pulley mounted to said crank, a rear wheel connected to said elongated member and a rear wheel axle 10 extending through said second hole, a second pulley mounted to said rear wheel axle, a belt reeving between said first pullet and said second pulley.

2. An exercise bike substantially as hereinbefore described with reference to and as shown in Figures 3 to 5 of the accompanying drawings.