Patent Application
20150321068
1. Technical Field
The present invention relates to a technical field of ball net bags, and more particularly, to a diminishable and distensible ball net bag structure essentially including a ball net bag of a capacity changeable with the quantity and total weight of balls contained therein so as to keep the balls close to the bag mouth and thus ensure easy access to the balls.
2. Description of Related Art
Ball sports, such as baseball, tennis, table tennis, basketball, and volleyball, share a common feature, that is, each training session requires so many balls that the balls have to be held in a ball net bag. Conventional ball net bags are of a fixed shape and thus are likely to crease when folded up. Conventional ball net bags are not only difficult to store but are also disadvantaged by their fixed capacity as a result of their fixed shape. Due to their fixed capacity, high-capacity conventional ball net bags holding few balls therein are inconvenient to users because the users' hands can hardly reach the balls inevitably found at the bottoms of the ball net bags, whereas low-capacity conventional ball net bags annoy users with inherent inadequacy of capacity.
It is an objective of the present invention to provide a diminishable and distensible ball net bag structure which essentially comprises a ball net bag of a capacity changeable with the quantity of balls contained therein to therefore achieve advantages as follows: in case of few balls, resilient elements contract while keeping the balls close to a mouth of the ball net bag; and in case of plenty balls, the resilient elements not only stretch and thus distend the ball net bag but also keep the balls close to the mouth to ensure easy access thereto even when the balls are taken out of the ball net bag one by one.
In order to achieve the above and other objectives, the present invention provides a diminishable and distensible ball net bag structure comprising a net bag bottom portion, a net bag peripheral side, a net bag mouth rim portion, and at least four resilient elements. The upper peripheral edge of the net bag bottom portion adjoins the lower peripheral edge of the net bag peripheral side. The upper peripheral edge of the net bag peripheral side adjoins the net bag mouth rim portion. The resilient elements are disposed at four portions or at the four portions and the junctions of every two adjacent said portions of the net bag peripheral side, respectively, and spaced apart from each other by an appropriate distance. When few balls are placed in the ball net bag, the balls together are light enough for the resilient elements to contract while keeping the balls close to a bag mouth of the ball net bag structure to ensure easy access to the balls. When plenty balls are placed in the ball net bag, the balls together are heavy enough for the resilient elements to not only stretch and thus increase the capacity of the ball net bag in order to contain all the balls but also keep the balls close to the bag mouth to ensure easy access to the balls even when the balls are taken out of the ball net bag one by one.
The present invention provides a diminishable and distensible ball net bag structure.
Referring to
The lower peripheral edge of the net bag peripheral side 20 adjoins the upper peripheral edge of the net bag bottom portion 10.
The net bag mouth rim portion 30 adjoins the upper peripheral edge of the net bag peripheral side 20.
The resilient elements 40 are disposed at four portions or at the four portions and the junctions of every two adjacent said portions of the net bag peripheral side 20, respectively, and spaced apart from each other by an appropriate distance. Two ends 41, 42 of each said resilient element 40 are connected to the net bag mouth rim portion 30 and the net bag bottom portion 10, respectively, to form a ball net bag 1. When few balls 60 are placed in the ball net bag 1, the balls 60 together are light enough for the resilient elements 40 to contract while keeping the balls 60 close to a bag mouth 2 of the ball net bag structure so as to ensure easy access to the balls 60. When plenty balls 60 are placed in the ball net bag 1, the balls 60 together are heavy enough for the resilient elements 40 to not only stretch and thus increase the capacity of the ball net bag 1 in order to contain all the balls 60 but also keep the balls 60 close to the bag mouth 2 to ensure easy access to the balls 60 even when the balls 60 are taken out of the ball net bag 1 one by one.
Regarding the diminishable and distensible ball net bag structure, a cover 50 is disposed on the net bag mouth rim portion 30 and equipped with a zipper 51 for connecting the cover 50 to the net bag mouth rim portion 30.
Regarding the diminishable and distensible ball net bag structure, the net bag mouth rim portion 30 has two handles 52 above to enhance ease of transport of the ball net bag 1.
Regarding the diminishable and distensible ball net bag structure, four corners of the net bag mouth rim portion 30 extend outward to form four lugs 31, respectively. Each said lug 31 has a fixing hole 311. Multiple rollers 71 are disposed at the bottom of a first ball net bag rack 70. Mushroom-headed fixing rods 72 are disposed at the top of the first ball net bag rack 70 and fixed penetratingly to the fixing holes 311 of the lugs 31, respectively.
Regarding the diminishable and distensible ball net bag structure, the ball net bag 1 is disposed on a second ball net bag rack 80. The second ball net bag rack 80 has multiple legs 81 which rest on the ground. The second ball net bag rack 80 has an upper lid 82 for covering the ball net bag 1 from above.
Regarding the diminishable and distensible ball net bag structure, the ball net bag 1 is disposed on a third ball net bag rack 90. The third ball net bag rack 90 has multiple legs 91 which rest on the ground. The third ball net bag rack 90 has a top lid 92 for covering the ball net bag 1 from above.
Regarding the diminishable and distensible ball net bag structure, the ball net bag 1 is disposed on a fourth ball net bag rack 100. The fourth ball net bag rack 100 is peripherally provided with an enclosing fabric 101 for enclosing the fourth ball net bag rack 100.
Regarding the diminishable and distensible ball net bag structure, the resilient elements 40 each are a spring, a resilient cord, or a resilient ribbon.
Referring to
The lower peripheral edge of the net bag peripheral side 20 adjoins the upper peripheral edge of the net bag bottom portion 10.
The net bag mouth rim portion 30 adjoins the upper peripheral edge of the net bag peripheral side 20.
The resilient elements 40 are disposed at four portions or at the four portions and the junctions of every two adjacent said portions of the net bag peripheral side 20, respectively, and spaced apart from each other by an appropriate distance. The resilient elements 40 each comprise a resilient cord 43 fastened to a resilient fastener 44. Two ends 431, 432 of each said resilient cord 43 are connected to the net bag mouth rim portion 30 and the net bag bottom portion 10, respectively, to form a ball net bag 1. The length of the resilient cord 43 can be adjusted by compressing the resilient fastener 44, so as to decrease the capacity of the ball net bag 1 (as shown in
In conclusion, the diminishable and distensible ball net bag structure according to the present invention is not only novel and thus meets the novelty requirement of invention patentability, but is also comprehensively innovative and thus meets the non-obviousness requirement of invention patentability. Furthermore, not only does the capacity of the ball net bag change with the quantity and total weight of the balls contained therein, but the ball net bag also keeps the balls close to the bag mouth to ensure easy access to the balls, thereby having high industrial applicability.
