Abdomen Exerciser

Abstract

An abdomen exerciser includes a main frame and a support frame which is pivotally connected with the main frame. The main frame and the support frame can be placed on the ground stably. The main frame has an inclined section which is pivotally connected with a dual link rod to support a back rest and to link a seat platform. The seat platform is connected with a rotatable seat. The support frame is pivotally connected with a foot frame which is disposed in front of the support frame and confined by a resilient rope or a spring. When the user lies down and sits up, the back rest is returned to the original position by the seat platform and the dual link rod, without using the spring or the resilient rope. The foot frame can be used for leg exercise.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an abdomen exerciser, and more particularly to an abdomen exerciser which can exercise the abdomen muscles, stretch the back and exercise the leg muscles.[0003]2. Description of the Prior Art[0004]A conventional abdomen exerciser is used for sit-ups, which can exercise waist and abdomen muscles. However, it cannot help the motion to stretch the waist. After the user lies down and sits up, the back rest is returned to its original position by means of a spring for the user to exercise the abdomen muscles. The conventional abdomen exerciser has the following shortcomings.[0005]1. The back rest of the abdomen exerciser is pulled upright by the spring. The additional spring increases the cost and is dangerous because it is exposed.[0006]2. The foot frame at the front end of the abdomen exerciser is fixed, which cannot be used for leg exercise.[0007]3. The height of the seat is in a fixed way...

AI Technical Summary

Benefits of technology

[0009]The primary object of the present invention is to provide an abdomen exerciser. The abdomen exerciser of the present invention comprises a main frame and a support frame which is pivotally connected with the main frame. The main frame and the support frame can be placed on the ground stably. The main frame has an inclined section which is pivotally connected with a dual link rod to support a back rest and to link a seat platform. The seat platform is connected with a rotatable seat. Both sides of a rear end of the seat platform are connected with a pair of grasp rods for the user to grasp thereon when sitting on the seat to swing his/her lower body. The support frame is pivotally connected with a foot frame which is disposed in front of the support frame and confined by a resilient rope. The main frame has a turning section which is pivotally connected with the support frame. The seat platform has a front end which is pivotally connected to the main frame through a first shaft. The seat platform comprises a transverse stop rod which is located under the seat platform to straddle on the main frame to keep the seat platform in a level state. The seat is connected to the seat platform through a rotation shaft so that the seat can be rotated freely. The seat platform has a rear end which is pivotally connected with the front ends of left and right pull rods through a second shaft. The rear ends of the left and right pull rods are pivotally connected to the lower end of a middle post of the back rest through a third shaft. The back rest is provided with a pivot seat close to the lower end thereof. The upper end of a support rod is pivotally connected to the pivot seat through a fourth shaft. The lower end of the support rod is pi...

Problems solved by technology

However, it cannot help the motion to stretch the waist.

The additional spring increase...

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