1. Field of the Invention
The present invention relates to a lace buckle device with innovatory convenience for firmly fastening or releasing two ends of a lace, and more particularly to a lace buckle device which can effectively prevent two ends of a lace from being pulled out by force.
2. Description of the Related Art
A rope or a lace is commonly used in our daily life. A rope can be used to tie up the mouth of a bag. A lace is applied to tie the mouth of a belted topcoat or a lace shoe for a wearer to wear comfortably. Generally, two ends of a rope or a lace would be tied to form a slipknot so as to secure the rope or lace in position. When one end of the rope or lace being pulled, the slipknot will easily be untied. However, there are many drawbacks by means of tying a slipknot for securing a rope or lace in position. For example, it wastes time and is troublesome to tie a slipknot, and a slipknot is easy to be loosened or to become a fast knot and is not beautiful.
A conventional lace buckle device has been invented to overcome the drawbacks of tying a slipknot to fasten two ends of a rope or a lace. Referring to FIG. 8, the conventional lace buckle device includes a buckle base 80 and an operative rod 90. An opening 81 is formed on the top of the buckle base 80. A central hollow 82 is provided in the interior of the buckle base 80, but the central hollow 82 does not penetrate through the bottom of the buckle base 80. Two opposite passing holes 83 are provided in the side wall of the buckle base 80. A top tray 91 is provided on the top of the operative rod 90, and a protruding rod 92 is provided on the bottom of the top tray 91. A passing hole 921 is provided to penetrate through the front and rear side walls of the protruding rod 92, and below each end of the passing hole 921 is provided with a stopping strip 922. A protruding block 923 is provided on the bottom of the protruding rod 92.
Referring to FIG. 9, while being assembled, a spring 93 is placed into the central hollow 82 of the buckle base 80, and then the operative rod 90 is inserted in the central hollow 82 with the direction of the passing hole 921 being in accordance with that of each passing hole 83. At the same time, each stopping strip 922 is forced to pass the opening 81 and stop against each passing hole 83 so as to make the protruding rod 92 be caught in the central hollow 82. Because of the elasticity of the spring 93, the passing holes 83 and the passing hole 921 are slightly staggered, and the passing holes 83 do not respectively wholly lap over each end of the passing hole 921. After the top tray 91 of the operative rod 90 being pressed down, the operative rod 90 will move downward to make the passing hole 921 accord with the passing holes 83, and then two ends of a rope or a lace 94 can penetrate through the overlapped passing holes 83 and 921. When the top tray 91 being released, referring to FIG. 10, two ends of a rope or a lace 94 will be fastened to prevent from being pulled out by means of the stagger of the passing holes 83 and 921.
However, there are still drawbacks in the above-mentioned conventional lace buckle device although it is more convenient to be operated and beautiful to look than a slipknot tied by hands. The conventional lace buckle device can function to fasten or release two ends of a lace by means of the spring 93 and the operative rod 90 which cooperate to change the positions of the passing hole 921, but, when two ends of the lace being clamped by the spring 93 and the operative rod 90, they can still be easily pulled out of the buckle device by forceful pulling. It can not have the perfect efficiency to fasten two ends of a lace.
Therefore, the present invention is to provide a lace buckle device that substantially obviates the drawbacks of the related conventional art.
An object of the present invention is to provide a lace buckle device that is convenient for operating to fasten or release two ends of a lace.
Another object of the present invention is to provide a lace buckle device whose catching rims of both slant holes improve perfect efficiency to prevent two ends of a lace from being pulled out by forceful pulling while in clamped condition.
To achieve these advantages, a lace buckle device in the present invention includes a buckle base, an operative rod and a spring. The buckle base is provided with a central vertical hollow, and a lateral hole is provided to penetrate through the centers of the front and rear walls of the buckle base. Two slant holes are respectively provided at the left and right sides of the lateral hole and respectively slantwise extend to and through the left and right side walls of the buckle base. A catching rim is formed on each shorter section of each slant hole in the left side wall or right side wall. The operative rod is provided with a lateral passing hole penetrating through the front and rear walls. After the spring and the operative rod being successively inserted in the central vertical hollow, each end of a lace can be inserted into each end of the slant hole in the left side wall or right side wall and out of each other end of the slant hole in the front wall, and then both ends of a lace are reversely inserted into the front end of the lateral hole and penetrate through the lateral passing hole of the operative rod and out of the rear end of the lateral hole of the buckle base so as to make two ends of a lace be firmly fastened by the clamp of the spring and the operative rod and the catch of the catching rims.