| 主权项 |
1. A tool head usable as an adaptor such that a tool is connectable to an end of the tool head and an object to be driven is connectable to another end of the tool head respectively comprising:
a connecting component including a first distal end thereof forming a connecting end connectable to the tool and a second distal end thereof forming a receiving end respectively, with the receiving end forming a receptacle, with the receptacle forming a first compartment and a second compartment, with the first compartment having a diametrical size not greater than the second compartment, with the second compartment having one of two opposite distal ends opening to the first compartment and the other distal end opening to the second distal end of the connecting component, with the second compartment including a plurality of vertical sides disposed circumferentially and forming a polygonal periphery, and with each of the plurality of vertical sides of the second compartment extending at a first length in a lengthwise direction of the receiving end; a driving component including a first distal end thereof forming an engaging end insertable in the receiving end and a second distal end thereof forming a driving end connectable to the object to be driven respectively, with the engaging end inserted in the receiving end having a first engaging section received in the first compartment and a second engaging section received in the second compartment respectively, with the first engaging section having a width smaller than the diametrical size of the first compartment such that a gap is formed between the first engaging section and the first compartment, with the second engaging section and the second compartment having matching polygonal shapes, with the engaging end disposed outside the plurality of vertical sides of the second compartment measuring a second length in a lengthwise direction of the driving component, and with the second length smaller than the first length; and a spacer made of metal, having an annular shape, disposed in the gap, and including an inner periphery thereof forming a first tight-fit edge and an outer periphery thereof forming a second tight-fit edge respectively, with the first tight-fit edge surrounding and abutting the first engaging section, and with the second tight-fit edge surrounding and abutting with a periphery of the first compartment; wherein the tool head is configured to prevent the connecting component from detaching from and rotating relative to the driving component, with the tool head having a tight-fit region in which the spacer tightly fits between the first engaging section and the first compartment and a fit region in which the second engaging section is received and retained within the second compartment. |
