Patent Application
20120279639
The present invention relates to a method for fastening strips of leisure chairs and particularly to a method for fastening strips to a frame of a leisure chair.
These days increasing of living standard has made people to raise even higher expectation on life quality. To improve comfort and aesthetic appeal at home, many people don't hesitate to purchase various types of household goods, including a wide variety of furniture, such as sofas, chairs and the like. Chairs are some of indispensable furniture to provide comfort for people in the houses, offices and leisure activities.
There are myriad types of chairs on the market with different structures made according to different functions or requirements. Take leisure chairs for instance, R.O.C. patent No. 488244 provides a chair that can be stacked over one another. It mainly has a frame including a seat and a backrest with a plurality of elastic strips fastened to the frame so that resilient support can be provided to the back or the hip of a user to enhance comfort during sitting.
Referring to
1. In general, the distal ends of the strip 20 is wound on the outmost layer, but the distal ends of the strip 20 of the aforesaid leisure chair is wound on the inmost layer during the second winding, which creates difficulty in assembly. As a result, production speed of the leisure chair is adversely affected.
2. Before winding of the strip 20 is performed for the second time, the strip 20 has to be stretched to the side tube 10 at another side. Every worker exerts different stretching forces, and hence each strip 20 is stretched with various degrees of forces. As a result, each strip 20 has different tensions that also affect sitting comfort and impact product quality.
The primary object of the present invention is to solve the problems of the conventional method that winding and fastening strips to leisure chairs are difficult and time-consuming and also result in uneven tensions on the strips and impact sitting comfort.
To achieve the foregoing object, the present invention provides a method for fastening strips to leisure chairs that mainly includes steps of: first, providing a frame of a leisure chair with two corresponding side tubes and a plurality of strips each is formed at a length greater than the interval between the two side tubes; positioning the strips and frame onto a welding machine with the strips straddling transversely on the two side tubes; bending inversely two ends of each strip towards the center to overlap the strip and wrap the two side tubes; and finally welding the portions where the strip and the two ends thereof are overlapped to fasten the two ends to the two side tubes. Thus the strips can be fastened to the frame of the leisure chair.
In an embodiment of the invention, the strips are elongated and made of PVC. The frame can be an integral rack or a portion of a rack of a leisure chair. The strips function as a seat or a backrest of the leisure chair to support a user's hip or back during sitting.
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.
The present invention aims to provide a method for fastening strips 40 to a leisure chair to support sitting of a user. Please refer to
Step S2, positioning the strips 40 and frame 30 onto a welding machine 50 which has a welding platform 51 and a welding tool 52 located above the welding platform 51. First, the strips 40 are positioned onto the welding station 51 and spaced from each other in a parallel manner (referring to
Step S3, bending the two ends 41 of each strip 40 exceeding the two side tubes 31 inversely towards the center to wrap the two side tubes 31 and overlap with the strip 40 (referring to
Also referring to
As a conclusion, the present invention mainly improves the winding fastening of the conventional technique by straddling and coupling a plurality of strips 40 on two side tubes 31 of the frame 30 of a leisure chair with two ends 41 of each strip 40 bent inversely towards the center to wrap the two side tubes 31; then the overlapped portions of the two ends 41 and strip 40 are welded and bonded together through high frequency welding. Compared with the conventional technique, the invention can weld and fasten multiple strips 40 simultaneously. Assembly can be done faster to reduce assembling time, and automatic production also can be adopted to increase production speed and quantity of leisure chairs.
While the preferred embodiment of the invention has been set forth for the purpose of disclosure, modifications of the disclosed embodiment 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.
