Patent Application
20060240752
The present invention relates to an improved coupling structure for grinding members and particularly to a removable coupling structure adopted for use on pneumatic tools.
The common pneumatic tool aims to provide a driving force through a pneumatic motor to rotate a spindle and drive a grinding member coupled on a distal end of the spindle to perform grinding operation. Refer to
As the grinding member 10 and the fastening element 11 are fabricated in an integrated manner, when the grinding member 10 has been used for a period of time and has to be replaced, the fastening element 1 I also is discarded. This results in an extra cost. Moreover, with the grinding member 10 and the fastening element 11 formed in an integrated manner, the number of the grinding member 10 is fixed and cannot be increased to meet the actual requirements. The overall practicality is lower.
Therefore the primary object of the present invention is to provide an improved coupling structure for grinding members that adopts a removable design so that one or more grinding member can be coupled or replaced. And the coupling structure can be used repeatedly. Thus the cost may be reduced.
In order to achieve the foregoing object, the coupling structure according to the invention aims to couple at least one grinding member on a pneumatic tool. It includes mainly a first clamping disk, a second clamping disk and a fastening element. The first clamping disk has a sleeve extended from the center of one side. The sleeve has a first aperture running through the first clamping disk. The second clamping disk has a second aperture in the center to receive the sleeve. The fastening element can run through the first aperture and the second aperture to hold the grinding member between the first clamping disk and the second clamping disk, thereby to fasten the grinding member to the pneumatic tool.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.
Please referring to
The first clamping disk 110 has a sleeve 112 extended from the center of one side. The sleeve 112 has a first aperture 114 running through the first clamping disk 110. The sleeve 112 can run through an opening 202 formed in the center of the grinding member 200. The second clamping disk 120 has a second aperture 122 in the center. The sleeve 112 runs through the grinding member 200 and the second aperture 122 of the second clamping disk 120. The fastening element 130 can run through the first aperture 114 and the second aperture 122 to hold the grinding member 200 between the first clamping disk 110 and the second clamping disk 120, thereby to fasten the grinding member 200 to the pneumatic tool 300. In this embodiment, the fastening element 130 is a bolt which has a head 132 to be driven by a hand tool (not shown in the drawings) and a tail end formed with a screw thread 134 to be fastened to a coupling head 302 of the pneumatic tool 300. By fastening the fastening element 130 to the coupling head 302, the first clamping disk 110 and the second clamping disk 120 may be clamped tightly. In addition, a washer 140 may be deployed between the head 132 of the fastening element 130 and the second clamping disk 120 to increase the fastening effect. To those skilled in the art, the fastening element 130 is not limited to the bolt. A latch tenon may also be used. Moreover, the first clamping disk 110 and the second clamping disk 120 may be made of aluminum or an aluminum alloy that has a greater structural strength.
Referring to
Referring to
By means of the construction set forth above, the coupling structure for grinding members according to the invention can provide at least the following benefits:
1. The coupling structure is removable, thus one or more grinding member may be coupled and replaced to enhance the practicality.
2. As the coupling structure is removable, it can be used repeatedly after the grinding member has been replaced, hence the cost is reduced.
While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as 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.
