Ball Picker

Abstract

Ball picker, comprising a container part and a handle part; the handle part includes detachably connected first shaft body, second shaft body, and third shaft body; the container part includes a bottom edge frame and a container wall; above the container wall, there is formed a ball exit; the container wall is made of flexible plastic or deformable material, which can bend towards the interior of the bottom edge frame; multiple elastic elements are connected at the bottom of the bottom edge frame, arranged in parallel, and forming ball entry gaps, where the width of the ball entry gap is smaller than the diameter of the ball.

Description

TECHNICAL FIELD

The present invention relates to the field of devices for picking up items from the ground, specifically, it involves a ball picker.

BACKGROUND TECHNOLOGY

In the practice of ball sports such as golf, table tennis, or tennis, individuals often need to pick up a large number of balls. This typically involves picking up each ball individually, a process that is time-consuming, tedious, and labor-intensive. Moreover, during the picking-up process, there is usually a need to repeatedly bend over, which may lead to potential damage or strain on the lower back.

To address the issue of potential back injury due to frequent bending while picking up balls, U.S. Pat. No. 14,978,840 discloses a device for picking up balls and other items. The device includes an elongated hollow ball container, and a ball valve mechanism mounted at the lower opening of the elongated ball container. The ball valve mechanism comprises multiple elastic cords, which may include both elastic ropes and springs, arranged in a crossed pattern. Users grasp the elongated hollow ball container at its upper end and pick up balls from the ground by pointing the lower end of the container in the direction of the balls. In doing so, the ball valve mechanism presses against the balls, allowing them to enter the ball container through the valve mechanism and be stored together with other picked-up balls inside the container.

A picking device for picking up balls and other objects may include a hollow ball container, which can be substantially rectangular; a handle shaft connected to the upper end of the hollow ball container; and a ball valve mechanism installed at the lower opening of the hollow ball container. The ball valve mechanism can include elastic cords woven in a horizontal/vertical interlacing pattern formed by horizontal and vertical cord segments.

However, the above device, when the ball container is elongated, can only pick up one ball at a time through the bottom ball valve mechanism, resulting in a slower efficiency. When the hollow ball container is rectangular, the bottom ball valve mechanism is woven with elastic cords in a horizontal and vertical crisscross pattern. As the ball valve mechanism presses on the ball, the ball enters the ball container through the ball valve mechanism. Due to the horizontal and vertical crisscross pattern of the elastic cords, there are more obstructions in the entrance gap, making it difficult for some balls to enter the ball container when picking up multiple balls.

Moreover, the handle shaft of the device is directly connected to the upper end of the hollow ball container, causing continuous squeezing of the ball container by the handle shaft during long periods of repeated ball-picking actions, thereby reducing the service life of the ball container. When the device is not in use or during packaging, the longer handle section and the container section with a certain height occupy a larger space, making it inconvenient for packaging and resulting in the waste of packaging materials.

SUMMARY

In order to address the aforementioned issues, the present invention provides a ball picker with a detachable handle, foldable connecting arms, and a flexible container wall.

To achieve the above objectives, the technical solution of the present invention includes a ball picker comprising a container section and a handle section connected to the container section. The handle section includes a rod and a connecting head, and the rod comprises detachably connected first, second, and third rod bodies. The container section comprises a bottom frame and a container wall extending upwardly from the bottom frame. The container wall forms a ball outlet away from the bottom frame. The container wall has the feature of flexible plastic or deformable characteristics, allowing it to bend towards the inside of the bottom frame.

The bottom frame is connected on opposite sides by adjustable connecting components to connecting arms, allowing the angle between the connecting arms in the vertical direction and the horizontal direction of the bottom frame to be adjustable. The connecting arms extend in opposite directions above the bottom frame to form connecting rods, which are connected to the handle section. The bottom frame is connected at the bottom with multiple elastic elements arranged in parallel, forming ball entry gaps, where the width of the entry gaps is smaller than the diameter of the ball

This solution, through the detachably connected first, second, and third rod bodies, enables the handle section to be separated and folded for storage. The connecting arms, connected to the bottom frame via adjustable connecting components, allow the vertical distance between the connecting rods and the bottom frame to be adjustable, facilitating the folding of the connecting rods to the bottom frame. The container wall, made of flexible plastic, can be bent towards the inside of the bottom frame.

When not in use or during packaging, the handle section can be detached and placed separately, and the connecting rods can be folded to the position of the bottom frame. The container wall can be folded to the position of the bottom frame, reducing the space occupied by the product and facilitating packaging.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to further illustrate the technical solution of the present application, a brief introduction to the drawings required in the embodiments will be provided below. It is apparent that the following description of the drawings is only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of the overall structure of the ball picker;

FIG. 2 is an exploded structural schematic diagram of the container;

FIG. 3 is an enlarged schematic diagram of section A in FIG. 2;

FIG. 4 is a top view of the container;

FIG. 5 is a front view of the container;

FIG. 6 is a schematic diagram of the structure of the elastic element;

FIG. 7 is a schematic diagram of the structure of the handle section;

FIG. 8 is a sectional view taken along line B-B in FIG. 4;

FIG. 9 is an enlarged schematic diagram of section C in FIG. 5;

FIG. 10 is an enlarged schematic diagram of section D in FIG. 5;

FIG. 11 is a schematic diagram of the structure of the third rod body;

FIG. 12 is a top view of the connecting head.

DETAILED DESCRIPTION

The following will provide a clear and complete description of the technical solution in the embodiments of the present application with reference to the accompanying drawings. It is evident that the described embodiments are only part of the embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

In this document, the term “embodiment” or “example” means that specific features, structures, or characteristics described in connection with an embodiment or example can be included in at least one embodiment of the present application. The use of this phrase at various locations in the specification does not necessarily refer to the same embodiment, and they are not mutually exclusive independent or alternative embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described in this document can be combined with other embodiments.

In this specification, for convenience, words and phrases indicating orientation or positional relationships such as “middle,” “upper,” “lower,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” and the like are used with reference to the drawings to describe the positional relationships of constituent elements. This is done solely for the purpose of describing the specification and simplifying the description, and it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operated in a specific orientation. Therefore, the positional relationships of the constituent elements can be appropriately changed based on the described directions of the constituent elements. Thus, the terms and phrases described in the specification are not limited to those expressly mentioned and may be appropriately substituted depending on the circumstances.

As shown in FIG. 1, a ball picker is provided, comprising: a container (2) and a handle portion (1) connected to the container (2). The container (2) includes a bottom frame (21) and a container wall (22) connected to the bottom frame (21). The bottom frame (21) can have various shapes, including rectangular or circular; in this embodiment, the bottom frame (21) is rectangular.

As shown in FIG. 2, there are at least two first connecting holes (211) around the bottom frame (21), and in this embodiment, two first connecting holes (211) are provided around the bottom frame (21). The bottom of the container wall (22) is provided with fifth connecting holes (221) corresponding to the first connecting holes (211). The container wall (22) is connected to the bottom frame (21) by passing through the first connecting holes (211) and the fifth connecting holes (221) with the first connecting member (6). The first connecting member (6) can be a bolt and nut combination or a rivet. In this embodiment, the first connecting member (6) is a rivet structure. Rivet connections generally have higher strength than bolt connections because rivet connections have a larger and more evenly distributed contact area. Additionally, rivet connections can reduce vibration and noise compared to bolt connections as they are less prone to loosening.

The container wall (22) forms a ball outlet (3) away from the bottom frame (21). The size of the ball outlet (3) can be larger than the size of the bottom frame (21), meaning that the side of the container wall (22) has an inverted trapezoidal structure with a wider top and a narrower bottom. In this embodiment, the inner dimensions of the ball outlet (3) are equal to the outer dimensions of the bottom frame (21).

In this embodiment, the container wall (22) has a flexible plastic or deformable feature, allowing it to fold inward towards the bottom frame (21). This enables the product to be compactly folded during packaging, saving space and reducing packaging material usage.

On both sides of the bottom frame (21), corresponding second connection holes (212) are respectively set, and on the outer side of the second connection holes (212) on each side, there are connected arms (4). Near one side of the bottom frame (21), the connected arm (4) is equipped with a third connection hole (41) corresponding to the second connection hole (212). The adjustable connecting element (7) is allowed to pass through between the second connection hole (212) and the third connection hole (41). The adjustable connecting element (7) can be a combination of bolts and nuts, quick release pins, or a combination of nuts and washers.

In this embodiment, the adjustable connecting element (7) is a bolt and wing nut. Through the combination of the bolt and wing nut, the tightness between the connected arm (4) and the bottom frame (21) can be manually adjusted without the need for auxiliary tools. This allows users to conveniently fold the connected arm (4) towards the bottom frame (21) at any time. In another embodiment, connected arms (4) can be connected on the inner side of the second connection holes (212), and the length of the connected arms (4) allows them to be fully folded within the bottom frame (21).

As shown in FIG. 3, on the horizontal sides outside the second connection holes (212), there are first limiting projections (213) and second limiting projections (214). The distance between the first limiting projection (213) and the second limiting projection (214) is consistent with the horizontal width of the connecting arm (4). During the assembly of this product, the damping sensation transmitted through the connecting arm (4) can be used to determine whether the connecting arm (4) has rotated to the predetermined position. Once rotated to the predetermined position, manually rotate the wing nut to secure the position of the connecting arm (4).

The connecting arms (4) extend towards each other on both sides, forming connecting rods (5) above the bottom frame (21). In the middle of the connecting rods (5), away from the surface of the bottom frame (21), a U-shaped connecting piece (51) is attached. On both sides of the U-shaped connecting piece (51), corresponding fourth connecting holes (511) are provided, and a connecting groove (512) is formed between the fourth connecting holes (511) on both sides of the U-shaped connecting piece (51). The connecting rod (5) is pivotally connected to the handle portion (1) through the connecting groove (512), allowing the handle portion (1) to rotate in the vertical plane of the connecting rod (5). The connecting rod (5) can also be directly connected to the handle portion (1).

As shown in FIGS. 4, 5, and 6, in this embodiment, the horizontal length (l) of the bottom frame (21) is 200 mm, the horizontal width (w) is 200 mm, and the vertical height (h) is 20 mm. The horizontal length (L) of the container wall (22) is 206 mm, the horizontal width (W) is 206 mm, and the vertical height (H) is 180 mm.

The bottom frame (21) is connected with n elastic elements (8) between its opposite sides. In this embodiment, the quantity of n is 5, and the elastic element (8) is a spring with hooks (81) at both ends. In this embodiment, the wire diameter (Ø1) of the spring is 1 mm, the coil diameter (Ø2) is 6.6 mm, the number of coils is 145, and the length of the spring at rest is 145 mm. By correspondingly setting elastic element connection holes (215) on opposite sides of the bottom frame (21) in a quantity consistent with the elastic elements (8), the hooks (81) of the springs are connected to the corresponding elastic element connection holes (215), allowing the springs to be connected in parallel within the bottom frame (21).

In another embodiment, the elastic elements (8) can also be multiple elastic components with elastic material wrapped around the middle part, connected to the inner side of the bottom frame (21) at both ends. The elastic material may include, but is not limited to, rubber. Alternatively, the elastic elements (8) can be elastic steel strips connected to the opposite sides of the bottom frame (21) at both ends, where the horizontal plane of the elastic steel strips is perpendicular to the horizontal plane of the bottom frame (21), and gaps for ball entry (9) are formed between the elastic steel strips.

The elastic connection holes on the same side evenly divide the length of the corresponding side of the frame, creating ball entry gaps (9) between the elastic elements (8) with a width w1 of 26.4 mm. Between the elastic elements (8) and the two sides of the bottom frame (21), two ball entry gaps (9) with a width w2 of 31.7 mm are formed. The width of the ball entry gaps (9) is smaller than the diameter of the ball, ensuring that the balls inside the container (2) will not fall out of the container (2) without external pressure acting on them through the ball entry gaps (9) between the springs.

As shown in FIG. 7, in this embodiment, the handle portion (1) comprises a rod body (11) and a connecting head (12) that connects the rod body (11) to the connecting rod (5). The rod body (11) includes a first rod body (111), a third rod body (113), and a second rod body (112) connecting the first rod body (111) and the third rod body (113). The removable connection of the first rod body (111), the second rod body (112), and the third rod body (113) allows the rod body (11) to be disassembled and placed, saving packaging space. In another embodiment, the rod body (11) can also be disassembled and placed by removable connections of several segments of the rod body.

As shown in FIGS. 8 and 9, at one end of the first rod body (111), away from the second rod body (112), there is a hanging hole (115). When the invention is not in use, it can be hung on a wall. Alternatively, a hanging ring or rope can be placed at the top of the first rod body (111), serving the same purpose as the hanging hole (115).

Near the hanging hole (115) on one side close to the second rod body (112), there are multiple grooves (114) wrapped around the first rod body (111). This design increases the friction between the rod body (11) and the user's palm, preventing the rod body (11) from slipping out of the user's hand while using the invention to pick up balls. At the end of the first rod body (111) away from the hanging hole (115), there is a first insertion hole (1112), and within the first insertion hole (1112), there is a first fixed hole (1111) with internal threads for connecting the second rod body (112).

The second rod body (112) has, near one end close to the first rod body (111), a top portion with a threaded first fixed segment (1121) corresponding to the first fixed hole (1111). The first fixed segment (1121), on the side away from the first rod body (111), has a first connecting segment (1122) that can be inserted into the first insertion hole (1112). The first fixed segment (1121) connects to the first fixed hole (1111) through threads, providing a stable and easily detachable connection between the first rod body (111) and the second rod body (112). Near one end close to the third rod body (113), the second rod body (112) has a second insertion hole (1124) with a threaded second fixed hole (1123) inside for connecting the third rod body (113).

As shown in FIG. 10, the third rod body (113), near one end close to the second rod body (112), has a top portion with a threaded second fixed segment (1131) corresponding to the second fixed hole (1123). The second fixed segment (1131), on the side away from the second rod body (112), has a second connecting segment (1132). The second connecting segment (1132) can be inserted into the second insertion hole (1124), and the second fixed segment (1131) connects to the second fixed hole (1123) through threads, providing a stable and easily detachable connection between the second rod body (112) and the third rod body (113).

The connection between the first rod body (111), the second rod body (112), and the third rod body (113) can be achieved not only through threaded connections, as illustrated in this embodiment but also through snap-fit connections. Alternatively, at the connecting ends of each rod body, there could be holes for a pin to connect them. Another option is to have adjacent rod bodies nested, with the interface featuring locating blocks and slots. Through the cooperation of these locating blocks and slots, the rod bodies can be fixed in predetermined positions.

As shown in FIGS. 11 and 12, at the end of the third rod body (113) away from the second rod body (112), there is a snap-fit projection (1134). On the side of the snap-fit projection (1134) away from the connecting head (12), there is a limiting projection (1133) that surrounds the rod body (11). At the end where the connecting head (12) connects to the third rod body (113), there is an insertion hole (127) for inserting the third rod body (113). On the wall (123) of the insertion hole (127), there is a snap-fit hole (124) corresponding to the snap-fit projection (1134). Through the cooperation of the snap-fit projection (1134) and the snap-fit hole (124), the third rod body (113) can be detachably connected to the connecting head (12), with the limiting projection (1133) limiting the length of the third rod body (113) inserted into the connecting head (12).

Between the third rod body (113) and the connecting head (12), in addition to the snap-fit connection, external threads can be set at the bottom of the third rod body (113), and internal threads can be set in the insertion hole (127) of the connecting head (12). The third rod body (113) and the connecting head (12) can be connected by threading. It is also possible to set pin holes at the bottom of the third rod body (113) and the top of the connecting head (12) and fix them through a detachable pin.

At the end of the third rod body (113) away from the second rod body (112), the bottom extends forward to form a guiding slope (1135) around the rod body (11), making it easier for users to insert the third rod body (113) into the insertion hole (127) of the connecting head (12) during assembly. At the bottom of the end of the third rod body (113) near the guiding slope (1135), a middle portion extends outward to form a limiting segment (1136). The insertion hole (127) in the connecting head (12) has a slot (126) corresponding to the limiting segment (1136). When the third rod body (113) is inserted into the insertion hole (127) of the connecting head (12), the limiting segment (1136) will enter the slot (126), further restricting the position of the third rod body (113) in the connecting head (12), preventing the third rod body (113) from rotating freely in the connecting head (12). On the relative bottoms of the insertion holes (127) on both sides of the slot (126), there are limiting slopes (125) corresponding to the guiding slope (1135). When the third rod body (113) is inserted into the insertion hole (127) of the connecting head (12), the guiding slope (1135) will fit with the limiting slope (125), making the connection between the third rod body (113) and the connecting head (12) more stable.

As shown in FIGS. 1 and 12, the connecting head (12), at the end away from the insertion hole (127), contracts inwards at the bottom and extends in the direction away from the insertion hole (127), forming a third connecting segment (121). The third connecting segment (121) is equipped with a through-hole (122). The third connecting segment (121) of the connecting head (12) can be inserted into the connecting groove (512), and the through-hole (122) on the third connecting segment (121) allows the second connector (10) to pass through the fourth connecting hole (511) on the U-shaped connector (51). This arrangement enables the connecting head (12) to rotate in the vertical plane of the connecting rod (5). When users need to pour out the balls from the container (2), they can lift the present invention and rotate the container (2) to tilt it to one side. The balls inside the container (2) will roll out from the tilted side.

Apart from the U-shaped connecting piece (51) connecting the rod body (5) with the connecting rod (5) in this embodiment, the rod body (11) can also be directly connected to the connecting rod (5) through the connecting head (12). The connecting rod (5) passes through the through-hole (122) at the lower end of the connecting head (12), and the connecting head (12) can rotate in the vertical plane of the connecting rod (5).

A method for using a device to pick up balls, comprising the following steps:

Providing the device, which includes a container (2) having a bottom frame (21) and a container wall (22) connected to the bottom frame (21). The horizontal length 1 of the bottom frame (21) is 200 mm, the horizontal width w is 200 mm, and the vertical height h is 20 mm. The horizontal length L of the container wall (22) is 206 mm, the horizontal width W is 206 mm, and the vertical height His 180 mm. The container wall (22) forms a ball exit (3) at the end away from the bottom frame (21). Five elastic members (8) are connected inside the bottom frame (21), and four ball entry gaps (9) with a width w1 of 33 mm are formed between the elastic members (8). Two ball entry gaps (9) with a width w2 of 34 mm are formed between the elastic members (8) and the bottom frame (21). Adjustable connecting components (7) connect connecting arms (4) to both sides of the bottom frame (21). The angle between the axial direction of the connecting arms (4) and the horizontal direction of the bottom frame (21) is adjustable. The connecting arms (4) extend toward each other above the bottom frame (21) to form connecting rods (5). The handle portion (1) includes a detachably connected rod body (11) and a connecting head (12). The rod body (11) is formed by connecting a first rod body (111), a second rod body (112), and a third rod body (113). The connecting head (12) is movably connected to the connecting rod (5).

When using the device to pick up balls, grip the portion at the upper end of the rod body (11) with a groove (114). Place the container (2) vertically above the balls to be picked up, and then move the container (2) downward, pressing the bottom of the container (2) against the balls. The balls will enter the container (2) through the ball entry gaps (9) between the elastic members (8).

The technical means disclosed in the present invention are not only limited to the technical means disclosed in the above embodiments but also include technical solutions formed by any combination of the above technical features. It should be noted that for those skilled in the art in this technical field, various improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered within the scope of protection of the present invention.

Claims

1. A ball-picking structure, comprising: A ball-picking structure, comprising a handle section (1) connected to a container (2); wherein: the container (2) includes a container wall (22); the container wall (22) is connected to connecting arms (4) on opposite sides at the bottom, with the connecting arms (4) on both sides extending towards each other within the container (2) to form connecting rods (5), wherein the connecting rods (5) are connected to the handle section (1).The container wall (22) forms a ball exit (3) at the top; the bottom of the container (2) is connected to n elastic elements (8), forming (n+1) ball entry gaps (9) within the bottom frame (21), where the width of the ball entry gap (9) is smaller than the diameter of the ball

2. The ball picking structure of claim 1, wherein: the handle section (1) comprises a shaft body (11) and a connecting head (12) that connects the shaft body (11) to the connecting rod (5). At one end of the connection between the shaft body (11) and the connecting head (12), there is a snap button protrusion (1134), and at the other end of the shaft body (11), opposite to the end where the snap button protrusion (1134) is located, there is a hanging hole (115).On the side of the hanging hole (115) near the snap button protrusion (1134), there are multiple grooves (114) arranged around the shaft body (11).

3. The ball picking structure of claim 2, wherein: at the end where the connecting head (12) is connected to the shaft body (11), there is an insertion hole (127) for inserting the shaft body (11), and the wall (123) of the insertion hole (127) has a snap hole (124) corresponding to the snap button protrusion (1134); the size of the snap hole (124) is consistent with the size of the snap button protrusion (1134).

4. The ball picking structure of claim 1, it is wherein: at the bottom of the container wall (22), there are elastic element connection holes (215) on opposite sides, the number of which is consistent with the number of elastic elements (8).

5. A ball picker, comprising: a container (2) and a handle section (1) connected to the container (2); wherein:the container (2) includes a bottom frame (21) and a container wall (22) extending upwardly from around the bottom frame (21); the horizontal length l of the bottom frame (21) is 180 mm to 230 mm, the horizontal width w is 180 mm to 220 mm, and the vertical height h is 15 mm to 25 mm; the horizontal length L of the container wall (22) is 190 mm to 230 mm, the horizontal width W is 190 mm to 225 mm, and the vertical height His 170 mm to 190 mm; the container wall (22) forms a ball exit (3) away from the bottom frame (21).The bottom frame (21) is connected on opposite sides through adjustable connecting components (7) to connecting arms (4), and the angle between the axis direction of the connecting arms (4) and the horizontal direction of the bottom frame (21) is adjustable; the connecting arms (4) on both sides extend towards each other above the bottom frame (21) to form connecting rods (5), and the connecting rods (5) are connected to the handle section (1).The bottom frame (21) is connected at the bottom with n elastic elements (8), forming (n−1) ball entry gaps (9) with a width w1 of 25 mm to 32 mm between the elastic elements (8), and forming 2 ball entry gaps (9) with a width w2 of 28 mm to 36 mm between the elastic elements (8) and the bottom frame (21); the width of the ball entry gap (9) is smaller than the diameter of the ball.

6. The ball picker of, claim 5 wherein: there are at least two first connection holes (211) around the bottom frame (21); on opposite sides of the bottom frame (21), there are corresponding elastic element connection holes (215) in a number consistent with the number of elastic elements (8); the elastic connection holes on the same side divide the length of the frame equally on that side. On opposite sides of the bottom frame (21), there are corresponding second connection holes (212), and the horizontal sides of the second connection holes (212) have first limiting protrusions (213) and second limiting protrusions (214); the distance between the first limiting protrusion (213) and the second limiting protrusion (214) is consistent with the horizontal width of the connecting arm (4).

7. The ball picker of claim 5, wherein: on the side of the connecting arm (4) near the bottom frame (21), there is a third connection hole (41) corresponding to the second connection hole (212); the middle part of the connecting rod (5) near the surface of the connecting head (12) is connected with a U-shaped connector (51), and the sides of the U-shaped connector (51) correspondingly have fourth connection holes (511), forming a connection groove (512) between the fourth connection holes (511) on both sides of the U-shaped connector (51).

8. The ball picker of claim 7, wherein: the second connection hole (212) and the third connection hole (41) allow the adjustable connecting component (7) to pass through, and the adjustable connecting component (7) is a bolt with a wing nut. Through the coordination of the bolt and wing nut, the fastening degree between the connecting arm (4) and the bottom frame (21) is adjustable.

9. The ball picker of claim 5, wherein: on the opposite sides at the bottom of the container wall (22), there are fifth connection holes (221) corresponding to the first connection holes (211), allowing the first connecting component (6) to pass through the first connection holes (211) and the fifth connection holes (221), connecting the container wall (22) to the bottom frame (21).

10. The ball picker of claim 9, wherein: the container wall (22) is made of flexible plastic or deformable material, which can bend towards the interior of the bottom frame (21).

11. The ball picker of claim 5, wherein: the elastic elements (8) are springs with hook portions (81) at both ends. The wire diameter Ø1 of the spring is 0.8 mm to 1.2 mm, the number of coils is 142 to 148, and the coil diameter Ø2 is 6 mm to 7 mm; the elastic elements (8) can also be elastic components with ends connected to the bottom frame (21) and the middle portion wrapped with elastic material.

12. The ball picker of claim 7, wherein: the handle section (1) comprises a shaft body (11) and a connecting head (12) connecting the shaft body (11) to the connecting rod (5); the shaft body (11) includes a first shaft body (111), a third shaft body (113), and a second shaft body (112) connecting the first shaft body (111) to the third shaft body (113).

13. The ball picker of claim 12, wherein: at one end of the first shaft body (111), away from the second shaft body (112), there is a hanging hole (115); on the side of the hanging hole (115) near the second shaft body (112), there are multiple grooves (114) arranged around the first shaft body (111). At the end of the first shaft body (111) away from the hanging hole (115), there is an opening for the first insertion hole (1112), within which there is an opening for the first fixed hole (1111).

14. The ball picker of claim 13, wherein: at the end of the second shaft body (112) near the first shaft body (111), the top is equipped with a threaded first fixing segment (1121) corresponding to the first fixed hole (1111). The first fixing segment (1121) on the side away from the first shaft body (111) is equipped with a first connecting segment (1122). At the end of the second shaft body (112) near the third shaft body (113), there is an opening for the second insertion hole (1124), within which there is a second fixed hole (1123).

15. The ball picker of claim 14, wherein: at the end of the third shaft body (113) near the second shaft body (112), the top is equipped with a threaded second fixing segment (1131) corresponding to the second fixed hole (1123). The second fixing segment (1131) on the side away from the second shaft body (112) is equipped with a second connecting segment (1132). At the end of the third shaft body (113) away from the second shaft body (112), there is a snap button protrusion (1134), and on the side of the snap button protrusion (1134) away from the connecting head (12), there is a limiting protrusion (1133) surrounding the shaft body (11).

16. The ball picker of claim 12, wherein: at the bottom of the end of the third shaft body (113) away from the second shaft body (112), there is an extension towards the front of the shaft body (11), forming a guiding slope (1135) around the shaft body (11); the bottom of the third shaft body (113) near the guiding slope (1135) extends outward to form a limiting segment (1136).

17. The ball picker of claim 16, wherein: at the end where the connecting head (12) is connected to the third shaft body (113), there is an opening for inserting the third shaft body (113), and the wall (123) of the insertion hole (127) has a snap hole (124) corresponding to the snap button protrusion (1134). At the end of the connecting head (12) away from the insertion hole (127), the bottom retracts inward and extends towards the direction away from the insertion hole (127), forming a third connecting segment (121); the third connecting segment (121) is provided with a through hole (122).

18. The ball picker of claim 17, wherein: the third connecting segment (121) of the connecting head (12) can be inserted into the connection groove (512), and the through hole (122) on the third connecting segment (121) allows the second connecting component (10) to pass through the fourth connecting hole (511) on the U-shaped connector (51), enabling the connecting head (12) to rotate in the vertical plane of the connecting rod (5).

19. The ball picker of claim 17, wherein: the bottom of the insertion hole (127) in the connecting head (12) is provided with a slot (126) corresponding to the limiting segment (1136), and the bottom of the insertion hole (127) on the opposite sides of the slot (126) is equipped with limiting slopes (125) corresponding to the guiding slopes (1135).

20. A method for ball retrieval using a device, comprising the following steps: The device, which includes: Container (2): The container (2) has a bottom frame (21) and a container wall (22) connected to the bottom frame (21). The container wall (22) forms a ball outlet (3) at an end away from the bottom frame (21). Inside the bottom frame (21), there are n elastic elements (8), forming (n+1) ball entry gaps (9) between the elastic elements (8) and between the elastic elements (8) and the bottom frame (21). The bottom frame (21) is connected on opposite sides through adjustable connecting components (7) with connecting arms (4), where the axial direction of the connecting arms (4) is adjustable relative to the horizontal direction of the bottom frame (21). The connecting arms (4) extend towards each other above the bottom frame (21) to form the connecting rod (5).Handle section (1): The handle section (1) has a detachably connected shaft body (11) and connecting head (12). The shaft body (11) is connected through a first shaft body (111), a second shaft body (112), and a third shaft body (113). The connecting head (12) is movably connected to the connecting rod (5).Use the device for ball retrieval.