Referring to
The locking member 20 forms a sleeve 22 on an upper portion thereof. Two L-shaped slots 24 are defined in the sleeve 22 by vertically and then horizontally cutting from an end edge into an end of the sleeve 22. Each slot 24 includes a vertical opening 242, and a horizontal groove 244. A cantilevered portion 246 is formed adjoining each slot 24, and the cantilevered portion 246 is generally located above the groove 244 of each slot 24. Two pressing portions 222 extend from the end of the locking member 20. A lower surface of each pressing portion 222 is flat, for pressing an upper surface of the piece 60. A receiving space 26 is defined by an inner surface of the sleeve 22. A plurality of spaced elastic arcuate legs 28 extends from an opposite end of the sleeve 22. Each leg 28 forms a clasp 282 on a free end thereof. When in a normal state, the free ends of the legs 28 slant toward each other so that inner surfaces of the legs 28 define a generally taper-shaped space.
The locking pin 40 includes a head 42, and a foot 44. The head 42 comprises a round plate and a cambered handle 422 formed on an upper surface of the plate. The foot 44 extends from a lower surface of the plate of the head 42. The foot 44 is a cylinder tapered toward a free end, corresponding to the space defined by the legs 28 of the locking member 20, but having a diameter larger than a diameter of the space defined by the legs 28 of the locking member 20 in a normal state. Two blocks 442 are formed on a surface of the foot 44, adjacent the head 42. Each block 442 corresponds to a slot 24 of the locking member 20.
Referring to
In detaching the pieces 60, 80, the locking pin 40 is pressed down. The handle 422 is turned counterclockwise. The blocks 442 are disengaged from the grooves 244. The locking pin 40 is moved up under restoring forces of the legs 28 of the locking member 20. The legs 28 restore to their normal state at which the legs 28 are not deformed and are extendable the through holes of the pieces 60, 80 and the clasps 282 disengage from the piece 80. Thus, the pieces 60, 80 are ready to be detached from each other.
In other embodiments, the fastening device can be used for combining three or more plate-like pieces, each defining a through hole.
It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the examples hereinbefore described merely being preferred or exemplary embodiments of the invention.
Number | Date | Country | Kind |
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200610060507.1 | Apr 2006 | CN | national |