Pull aid structure

1. A pull aid structure, comprising:

a handle;

a connecting element movably disposed at the handle; and

a positioning element having a corresponding portion disposed at the handle and movably coupled to an adjoining portion of the connecting element to allow the handle to escape from the connecting element and thus rotate or move as soon as the positioning element escapes from the connecting element;

wherein the connecting element is fitted around by an elastic element and the elastic element is a torsion spring, whereas two ends of the elastic element are disposed at the handle and the connecting element, respectively, thereby providing a rotating force to the handle to escape from the connecting element when the positioning element escapes from the connecting element.

2. The pull aid structure of claim 1 , wherein the handle has an abutting portion and a receiving space for receiving the connecting element or the positioning element.

3. The pull aid structure of claim 1 , wherein the connecting element has a rotating shaft connected to the handle or provided with a joining element whereby the rotating shaft is connected to the handle.

4. The pull aid structure of claim 3 , wherein a first thrust element or a second thrust element is disposed between the handle and the connecting element or between the handle and the rotating shaft.

5. The pull aid structure of claim 3 , wherein the rotating shaft has a blocking portion such that the blocking portion and the connecting element are connected to each other or confined to each other.

6. The pull aid structure of claim 1 , wherein the adjoining portion of the connecting element is movably coupled to, confined to, adapted to interfere with or engaged with the positioning element, the positioning element further comprising a pressing portion disposed at an end of the handle and an actuating rod connected to the pressing portion, with the corresponding portion connected to the actuating rod and movably coupled to, confined to, adapted to interfere with or engaged with the adjoining portion.

7. The pull aid structure of claim 1 , wherein the connecting element comprises a connection unit with a positioning portion.

8. The pull aid structure of claim 1 , wherein the positioning element and the handle are movably connected by a connector.

9. The pull aid structure of claim 1 , wherein the handle or the positioning element has a movable portion whereby the positioning element moves horizontally or vertically.

10. The pull aid structure of claim 1 , wherein an elastic portion is disposed between the positioning element and the handle, between the handle and the connecting element, or between the connecting element and the positioning element.

11. The pull aid structure of claim 1 , wherein the handle has a stopping portion, and the connecting element has a corresponding checking portion such that the corresponding checking portion and the stopping portion are confined to each other or adapted to stop each other.

12. The pull aid structure of claim 1 , wherein the corresponding portion of the positioning element is integrally formed with the handle or is a bump, a protuberance, a dent, a slot, a hole, a buckle, a hook, a plate or a block which is connectedly formed to restrict the adjoining portion of the connecting element.

13. A pull aid structure, comprising:

a handle;

a connecting element movably disposed at the handle; and

a positioning element having a corresponding portion disposed at the handle and movably coupled to an adjoining portion of the connecting element to allow the handle to escape from the connecting element and thus rotate or move as soon as the positioning element escapes from the connecting element;

wherein a coil spring is disposed between the handle and the connecting element, and the handle linearly moves relative to the connecting element.