A socket set which includes a first socket, a second socket and a combination mechanism is provided. The first socket and the second socket can be combined together. The combination mechanism can retain the first socket and the second socket in a corresponding position, such that the first socket and the second socket are in a cooperative-motion relationship.
1. A socket set, including:
a first socket, having an inner circumferential surface and an outer circumferential surface, the inner circumferential surface defining a first driving portion and a second driving portion at two sides of the first socket, a first driven portion being formed between the first and second driving portions, the first and second driving portions being adapted for driving a screwing member, the first driven portion being adapted to be driven by a driving rod having a driving head, and the outer circumferential surface formed with a polygonal engaging surface;
a second socket, having an inner circumferential surface and an outer circumferential surface, the inner circumferential surface defining a third driving portion and a fourth driving portion at two sides of the second socket, a second driven portion having a different size than the first driving portion being formed between the third and fourth driving portions, the third and fourth driving portions being adapted for driving a screwing member, and the second driven portion being adapted to be driven by a driving rod having a driving head; and
a combination mechanism,
wherein the polygonal engaging surface is adapted for being received in the third driving portion, the first and second sockets are in a cooperative-motion relationship, and the combination mechanism includes an engaging element and at least a first recess to retain the first and second sockets in a corresponding position.
2. The socket set of claim 1 , wherein the first, second, third and fourth driving portions are substantially polygonal, and the amount of corners of the polygonal engaging surface is equal to that of the third driving portion.
3. The socket set of claim 1 , wherein the combination mechanism further includes a second recess and a ring, the first recess is disposed around the polygonal engaging surface, the second recess is disposed around the third driving portion, the ring is received in the first recess or the second recess, and when the polygonal engaging surface is received in the third driving portion, the first and second recesses correspond to each other and the ring is limited in the first and second recesses.
4. The socket set of claim 1 , wherein the engaging element is an engaging member and the at least a first recess is a receiving slot, the engaging member is disposed on one of the polygonal engaging surface and third driving portion, and the receiving slot is disposed on the other of polygonal engaging surface and third driving portion.
5. The socket set of claim 1 , wherein the first, second, third and fourth driving portions are different from each other in size.
6. The socket set of claim 1 , wherein the outer circumferential surface of the second socket is formed with a polygonal engaging surface.
7. The socket set of claim 1 , wherein the combination mechanism further includes a limiting coil, a limiting slot and the at least a first recess is a receiving groove, the limiting coil has a small-radius middle section and two large-radius side sections, the two side sections are disposed at two sides of the middle section respectively and received in the limiting slot, the middle section is received in the receiving groove, the limiting slot is formed in the third driving portion, and the receiving groove is formed on the polygonal engaging surface.