Combination assembly of string and adjusting and fastening device
A combination assembly includes a string and an adjusting and fastening device. The adjusting and fastening device is a hollow cube. The cube includes two lateral holes and a bottom formed respectively at two lateral sides thereof and a bottom side thereof for communication with inside space thereof and outside. The string is inserted through the lateral and bottom holes to be combined with the cube, having two ends exposed outside the bottom hole. While applied to a shoelace or a chinstrap or other condition requiring tightening/loosening, the combination assembly are good at length adjustment, fixture, and appearance of the string as well as convenient operation thereof.
1. Field of the Invention
The present invention relates generally to length adjustment of strings, and more particularly, to a combination assembly of a string and an adjusting and fastening device.
2. Description of the Related Art
A conventional method of tying a shoelace is to insert the shoelace through eyelets of a shoe and keep predetermined length of two ends of the shoelace exposed outside for further tying action to fasten the shoe onto the user's foot. Tying the shoelace with a decorative butterfly-shaped knot is the most popular for the users because it enables the shoe to be aesthetical in appearance and the length of the exposed shoelace to be adjustable.
A conventional string adjustor includes a hollow cube, which has two vertical through holes and two horizontal through holes. The two vertical through holes are formed respectively on a top side and a bottom side of the cube, in communication with each other. The two horizontal through holes are formed respectively in two lateral sides of the cube, in communication with each other. A string is inserted through the vertical and horizontal through holes to have a butterfly-shaped knot, which length is adjustable by pulling loops of the string outward. However, the string adjustor fails to fasten the string after the butterfly-shaped knot is formed, incurring potential danger. Thus, an improvement is necessary.
SUMMARY OF THE INVENTIONThe primary objective of the present invention is to provide a combination assembly of a string and an adjusting and fastening device, which can not only adjust the length of the string but also fasten the string.
The secondary objective of the present invention is to provide a combination assembly of a string and an adjusting and fastening device, wherein the string can be tied more aesthetically than the prior art.
The foregoing objectives of the present invention are attained by the combination assembly, in which the adjusting and fastening device is a hollow cube. The cube includes two lateral holes and a bottom formed respectively at two lateral sides thereof and a bottom side thereof for communication with inside space thereof and outside. The string is inserted through the lateral and bottom holes to be combined with the cube, having two ends exposed outside the bottom hole.
BRIEF DESCRIPTION OF THE DRAWINGS
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In the aforementioned embodiments, the string is a flat cord. Alternatively, the string can be a round cord as shown in
In addition to the shoelace, the present invention can be applied to chinstraps or other conditions requiring length adjustment for tightening and loosening effect, not limited to the shoelace to narrow the claim thereof. In conclusion, the present invention includes advantages recited below.
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- 1. Length adjustment and fixture: The present invention enables length adjustment of the string to tighten or loosen the string and causes cooperation between the inversive tension of the string and the adjusting and fastening device while the string is tightened to fasten the string.
- 2. Convenient operation: The user does not have to learn the art of tying the string but to merely pull the string bilaterally sideward to tighten the string and to pull the adjusting and fastening device upward to loosen the string for requirement of conveniently tying shoelaces and chinstraps and for convenient operation of the children who do not know how to tie the string.
- 3. More aesthetical appearance: The present invention enables the string to be butterfly-shaped to have tidy and aesthetical appearance without messy exposure of the string.
Claims
1. A combination assembly of a string and an adjusting and fastening device, wherein said adjusting and fastening device is a hollow cube having two lateral holes and a bottom hole respectively formed at two lateral sides thereof and a bottom side thereof for communication between inside space and outside, said string running through said bottom and lateral holes to have two ends exposed outside said bottom hole.
2. The combination assembly as defined in claim 1, wherein said string is provided with a midsection fixed inside said adjusting and fastening device.
3. The combination assembly as defined in claim 2, wherein said midsection of said string is adhesively fixed inside said adjusting and fastening device.
4. The combination assembly as defined in claim 1, wherein said string includes a plurality of retaining portions formed at a predetermined position outside said adjusting and fastening device for preventing said string from pulling into said lateral holes.
5. The combination assembly as defined in claim 4, wherein said retaining portions are formed by heating and hardening parts of said string.
6. The combination assembly as defined in claim 4, wherein each of said retaining portions is formed by a jig clamping said string.
7. The combination assembly as defined in claim 1 further comprising a cram plate mounted inside said adjusting and fastening device for partitioning off said two lateral holes into two sections for oppressing said string running under said cram plate.
Type: Application
Filed: Aug 9, 2005
Publication Date: Apr 13, 2006
Inventor: Jinn-Yih Wang (Changhua County)
Application Number: 11/199,274
International Classification: A43C 7/00 (20060101);