US 20020175540 A1
A safety fastening latch for leisure chairs includes a latch member and a fastener. The latch member is coupled with a rear foot of a leisure chair and slidable thereon for a limited distance. The fastener has a first end pivotally engaged with the rear foot and a second end pivotally engaged with a back support of the leisure chair. When the leisure chair is extended, the latch member may be slid to engage with the fastener to prevent the fastener from moving away from the rear foot such that the rear foot and back support will maintain a latched and engaged relationship thereby to prevent the leisure chair from unintentional folding.
1. A safety fastening latch for a leisure chair, comprising:
a latch member coupled with a rear foot of the leisure chair and slidable thereon for a limited distance; and a fastener having a first end pivotally engaged with the rear foot and a second end pivotally engaged with a back support of the leisure chair; wherein when the leisure chair is extended, the latch member being moved to engage with the fastener to prevent the fastener from moving away from the rear foot for the rear foot and the back support maintaining a latched and engaged relationship thereby to restrict the leisure chair from unintentional folding.
2. The safety fastening latch of
3. The safety fastening latch of
4. The safety fastening latch of
 Referring to FIGS. 1A, 1B and 2, the safety fastening latch according to the present invention includes a fastener 2 and a latch member 3 attached to a rear foot 11 and a back support 12 of a leisure chair 1. The fastener 2 has a first end pivotally engaged with the rear foot 11 and a second end pivotally engaged with the back support 12. The fastener 2 at the second end further has a snap section 21which has a snap notch 22 formed thereon.
 The latch member 3 is coupled with the rear foot 11 above the fastener 2 and has a guide slot 31 formed thereon. In the guide slot 31, there is a strut 13 fixedly fastened to the rear foot 11. The latch member 3 further has a latch section 32 extended outwards at the end close to the fastener 2 to mate against the snap section 21. The latch section 32 has an inner side which has a latch rim 33 formed thereon.
 Referring to FIGS. 3A, 3B, 4A and 4B for an embodiment of the present invention, when in use with the leisure chair 1 being extended, the fastener 2 is driven by the extending back support 12 and is pivotally turned to contact the rear foot 11. The snap section 21 of the fastener 2 faces the latch member 3. Users may move the latch member 3 sliding on the rear foot 11 through the guiding of the strut 13 in the guide slot 31 until the latch section 32 of the latch member 3 engaged with the snap section 21 with the latch rim 33 of the latch section wedged into the snap notch 22 of the snap section 21 thereby to fasten the leisure chair 1 securely. Moreover, the inner side of the latch section 32 also mates and engages with the outer rim of the snap section 21 for preventing the two from separating. By means of the construction set forth above, the latch member 3 may harness the fastener 2 from moving away from the rear foot 11 thereby to make the rear foot 11 and back support 12 maintaining a latched and engaged relationship once they are fastened. As a result, the leisure chair 1 will be prevented from incidentally folding and gives users better safety protection.
 While the preferred embodiment of the present invention has been set forth for purpose of disclosure, modifications of the disclosed embodiment of this 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 present invention.
FIG. 1A is a perspective view of the present invention;
FIG. 1B is another perspective view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3A is a schematic view of an embodiment of the present invention;
FIG. 3B is a schematic view of an embodiment of the present invention under folding;
FIG. 4A is a schematic view of the present invention in use, under fastening; and
FIG. 4B is a schematic view of the present invention in use, being fastened.
 (1) Field of the Invention
 This invention relates to a safety fastening latch for leisure chairs, and more particularly a fastening latch for preventing the folding leisure chairs from unintentional folding.
 (2) Description of the Prior Art
 With the arriving of two-day weekend, people's life styles have gradually changed. After working intensely during the week days, taking some leisure trips or travelling on the weekend has become a main relaxation activity to many people. Goods to be used in the leisure activities have a growing demand. Leisure chair is one of the important and popular leisure goods. However the commonly used folding leisure chairs still have some shortcomings and potential risks. For instance, the general folding chairs mostly do not have safety means to prevent the chairs from incidental folding. An incidental folding of the chair could cause injury to people. Although some manufacturers have introduced folding leisure chairs with anti-folding means, they generally have complicated structure and are more expensive, therefore are not widely accepted in the market place. There are some simpler safety means which use a hook to latch one side of the chair for preventing the chair from unintentional folding. However they still will clip and hurt users' fingers accidentally. They are not desirable design. There are still rooms for improvement.
 In view of the foregoing disadvantages, it is therefore an object of the present invention to provide a safety fastening latch for preventing a folding leisure chair from unintentional folding and to avoid accidental injury when using the safety fastening latch.
 The foregoing, as well as additional objects, features and advantages of the present invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.