Abstract
An engagement structure for a tool contains: a drive member which includes an accommodation orifice, a hexagonal tooth portion, and six planes. A respective one of the six planes is arranged on a center of a respective one of six peripheral sides of the hexagonal tooth portion, and the two beveled rims extends from the two sides of the respective one plane and are connected with a first adjacent beveled rim of a first adjacent plane and a second adjacent beveled rim of a second adjacent plane. A ratio of lengths of the respective one plane, the first adjacent beveled rim and the second adjacent beveled rim is 2:1:2, and an angle between the respective one plane and each of the first adjacent beveled rims and the second adjacent beveled rim is 2 degrees.
Claims
1. An engagement structure for a tool comprising: a drive member which includes an accommodation orifice defined in the drive member, a hexagonal tooth portion formed around an inner wall of the accommodation orifice, and six planes; wherein a respective one of the six planes is arranged on a center of a respective one of six peripheral sides of the hexagonal tooth portion, and the two beveled rims extends from the two sides of the respective one plane and are connected with a first adjacent beveled rim of a first adjacent plane and a second adjacent beveled rim of a second adjacent plane, wherein a ratio of lengths of the respective one plane, the first adjacent beveled rim and the second adjacent beveled rim is 2:1:2, and an angle between the respective one plane and each of the first adjacent beveled rims and the second adjacent beveled rim is 2 degrees; wherein the drive portion is rotated to drive a workpiece without any notches/unfilled corner or a workpiece having notches/unfilled corner; wherein when rotating the drive portion in a clockwise direction or a counterclockwise direction, each of the two beveled rims of the respective one plane matingly engages and does not damage the workpiece.
2. The engagement structure for the tool as claimed in claim 1, wherein the multiple bevel rims of the hexagonal tooth portion engage with and rotate a peripheral side of the hexagonal object or the non-hexagonal object.
3. The engagement structure for the tool as claimed in claim 1, wherein when the drive portion is idly rotated, an angle between each beveled rim of the respective one plane and each of six sides of the workpiece is 4 degrees.
4. The engagement structure for the tool as claimed in claim 1, wherein the tool is any one of a ratchet wrench, a socket, and an open end wrench.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] FIG. 1 is a cross sectional view showing the assembly of a conventional engagement structure for a tool.
[0016] FIG. 2 is a cross sectional view showing the operation of the conventional engagement structure for the tool.
[0017] FIG. 3 is another cross sectional view showing the operation of the conventional engagement structure for the tool.
[0018] FIG. 4 is a cross sectional view showing the assembly of another conventional engagement structure for a tool.
[0019] FIG. 5 is a cross sectional view showing the operation of another conventional engagement structure for a tool.
[0020] FIG. 6 is another cross sectional view showing the operation of another conventional engagement structure for a tool.
[0021] FIG. 7 is also another cross sectional view showing the operation of another conventional engagement structure for a tool.
[0022] FIG. 8 is a cross sectional view showing the assembly of an engagement structure for a tool according to a preferred embodiment of the present invention.
[0023] FIG. 9 is a cross sectional view showing the assembly of a part of the engagement structure for the tool according to the preferred embodiment of the present invention.
[0024] FIG. 10 is a cross sectional view showing the operation of the engagement structure for the tool according to the preferred embodiment of the present invention.
[0025] FIG. 11 is another cross sectional view showing the operation of the engagement structure for the tool according to the preferred embodiment of the present invention.
[0026] FIG. 12 is also another cross sectional view showing the operation of the engagement structure for the tool according to the preferred embodiment of the present invention.
[0027] FIG. 13 is still another cross sectional view showing the operation of the engagement structure for the tool according to the preferred embodiment of the present invention.
[0028] FIG. 14 is a cross sectional view showing the operation of a part of the engagement structure for the tool according to the preferred embodiment of the present invention.
[0029] FIG. 15 is a perspective view showing the application of the engagement structure for the tool according to the preferred embodiment of the present invention.
[0030] FIG. 16 is another perspective view showing the application of the engagement structure for the tool according to the preferred embodiment of the present invention.
[0031] FIG. 17 is also another perspective view showing the application of the engagement structure for the tool according to the preferred embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0032] With reference to FIGS. 8 and 9, an engagement structure for a tool according to a preferred embodiment of the present invention comprises a drive member 30 which includes an accommodation orifice 31 defined in the drive member 30, a hexagonal tooth portion 32 formed around an inner wall of the accommodation orifice 31, and six planes 33, wherein a respective one of the six planes 33 is arranged on a center of a respective one of six peripheral sides of the hexagonal tooth portion 32, and the two beveled rims 34 extends from the two sides of the respective one plane 33 and are connected with a first adjacent beveled rim 34 of a first adjacent plane 33 and a second adjacent beveled rim 34 of a second adjacent plane 33, wherein a ratio of lengths of the respective one plane 33, the first adjacent beveled rim 34 and the second adjacent beveled rim 34 is 2:1:2, and an angle between the respective one plane 33 and each of the first adjacent beveled rims 34 and the second adjacent beveled rim 34 is 2 degrees.
[0033] Referring to FIGS. 10 to 14, the drive portion 30 is rotated to drive a workpiece 35 without any notches/unfilled corner or a workpiece 36 having notches/unfilled corner. When rotating the drive portion 30 in a clockwise direction or a counterclockwise direction, each of the two beveled rims 34 of the respective one plane 33 matingly engages and does not damage the workpiece.
[0034] As shown in FIG. 11, when the drive portion 30 is idly rotated, an angle between each beveled rim 34 of the respective one plane 33 and each of six sides of the workpiece is 4 degrees, thus rotating the workpiece easily within a limited operation space.
[0035] As illustrated in FIGS. 15-17, the drive member 30 is applicable for the tool, such as a ratchet wrench 40, a socket 41, or an open end wrench 42.
[0036] While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention and other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.
