Soccer balls and training components

Abstract

SOLUTION: Provided are a soccer ball and a training component. The soccer ball has a spherical body and a mark area provided on a surface of the spherical body. The mark area includes a ball initial direction guide line, a ball placement line, and a kick point set provided on the surface of the spherical body. The ball initial direction guide line and the ball placement line are located on different cross sections, and the cross sections pass through the spherical center of the spherical body. The kick point set includes kick reference points distributed at a plurality of intervals. A cross section where a distribution path of the kick reference points is overlapped with a cross section where the ball initial direction guide line is located.EFFECT: When A cross section where a ball initial direction guide line is located and a cross section where a ball placement line is located are perpendicular to the ground, a horizontal medline cross section is parallel to the ground, and a plurality of kick reference points are distributed downward from the horizontal medline cross section. A soccer ball and a training component can improve the training efficiency and effectiveness of place kicks.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to the technical field of sports equipment, and more particularly to soccer balls and training components. [Background technology]

[0002] In soccer, place kicks are an important and highly skilled skill, and include free kicks, penalty kicks, corner kicks, and goal kicks. Each kicking motion involves elements such as aiming the ball, running up, landing with the supporting foot, kicking, and following through with the foot. Each of these elements requires strict objective technical elements, such as specific angle, distance, position, and direction, and each requires different requirements. The impact of these objective technical elements on kicking effectiveness must be understood through extensive testing, and extensive practice is required to develop movement habits and muscle memory, standardize the movement, and master specific types of ball positioning skills. However, there is a lack of training equipment for place kicks, making it difficult to systematically, accurately, rigorously, and efficiently guide the objective technical elements, such as the specific angle, distance, position, and direction, of each movement link. This makes it difficult to achieve the "most accurate and stable" conditions for these elements during training, accurately test the movement, and accurately and repeatedly practice, resulting in poor training efficiency and effectiveness. Summary of the Invention [Problem to be solved by the invention]

[0003] To provide a soccer ball, a training component, and a training device that can improve the training efficiency and training effect of place kicks.

[0004] An embodiment of the present disclosure can be realized in this way. An embodiment of the present disclosure provides a soccer ball, which has a spherical body and a marking area on the surface of the spherical body, and the marking area includes a ball initial direction guideline, a ball placement line, and a kick point set, each of which is provided on the surface of the sphere, the ball initial direction guideline and the ball placement line are located on different cross sections, each of which is a cross section passing through the center of the sphere, the kick point set includes a plurality of kick reference points distributed at intervals, the cross section on which the distribution paths of the plurality of kick reference points are located overlaps with the cross section on which the ball initial direction guideline is located, and a horizontal midline cross section is defined as a cross section passing through the center of the sphere, and when the cross section on which the ball initial direction guideline is located and the cross section on which the ball placement line is located are both perpendicular to the ground, the horizontal midline cross section is parallel to the ground, and the plurality of kick reference points are distributed downward from the horizontal midline cross section.

[0005] In the above embodiment, the ball initial direction guideline, ball placement line, and kick reference point distribution path are circumferential lines where a cross section passing through the center of the sphere intersects with the spherical surface of the sphere. After the user and the sphere rotate relative to each other, these lines indicating the marking area can be visually perceived as overlapping straight lines. Due to the angular relationship between the ball initial direction guideline and the ball placement line with respect to the ground, after the user rotates the sphere in place, if the cross section where the ball initial direction guideline is located is perpendicular to the ground, the ball initial direction guideline will visually appear "perpendicular" to the ground. If the cross section where the ball placement line is located is perpendicular to the ground, the ball placement line will visually appear "perpendicular" to the ground. Furthermore, when a user faces a ball initial direction guideline that is "perpendicular" to the ground, the ball initial direction guideline will visually appear as a "single straight line" to the user and can be used to indicate direction. Therefore, by placing the ball so that the cross section where the guideline for the ball initial direction and the ball placement line are located are perpendicular to the ground, and when the guideline for the ball initial direction matches the predetermined target direction, the position of the mark area on the ball relative to the ground can be determined, thereby achieving "accurate ball placement," improving ball placement efficiency and training efficiency.

[0006] The multiple kick reference points are all located on the cross section where the ball initial direction guideline is located, and by aligning the "straight line" indicated by the ball initial direction guideline with the direction of a preset target, the user can indicate the flight direction of the ball when kicking through the kick reference point. After "accurate ball placement," each kick reference point is distributed downward from the horizontal midline cross section, and the user kicks the ball at the position indicated by each kick reference point, sending the ball flying in the direction indicated by the ball initial direction guideline. At the same time, if the user kicks toward a kick reference point that is farther from the horizontal midline cross section, i.e., the further down, the higher the launch angle of the ball, so the user can practice by kicking the ball to the corresponding kick reference point according to the angle required for the height of the ball initial direction being practiced.

[0007] When a user practices place kicks using the soccer ball of the present disclosure, the user can quickly complete ball placement and aim the ball at the kick target using the ball initial direction guidelines and ball placement line, quickly completing "accurate ball placement." The positions of each kick reference point relative to the ground, the ball, and the predetermined kick target are accurately fixed. After an accurate run-up and kick, the ball's flight direction and trajectory are also fixed. Based on the ball initial direction effect after the kick, the user can determine whether their complete kicking motion accurately and effectively hit the kick contact point on the desired ball. This allows the user to refine and solidify each element of the motion, such as the run-up angle and trajectory, the landing of the supporting foot, kick posture, and follow-through motion. After becoming accustomed to effective movements, the user can form movement habits and muscle memory. Even when kicking with a soccer ball without a marking area, the user can apply the details of the skilled movement to perform stable movements. Therefore, practicing with a soccer ball with the above-mentioned marking area can improve the efficiency and effectiveness of place kick training.

[0008] Optionally, the central axis is defined as the intersection of the cross section on which the guideline for the ball initial direction is located and the cross section on which the ball placement line is located, and the mark area further includes a run-up guide mark, and the run-up guide mark includes a plurality of run-up angle points, and the different run-up angle points have different included angles between the cross section on which the central axis is located and the cross section on which the guideline for the ball initial direction is located.

[0009] In the above embodiment, when a user kicks a soccer ball, if the user takes a run-up from different directions relative to the soccer ball, this affects factors such as the direction of force applied to the kicking foot when the user kicks. The cross-section where each run-up angle point and central axis are located forms an included angle with the cross-section where the ball initial direction guideline is located, and this can be used to indicate the user's run-up angle. After "accurately placing the ball," if the user stands directly next to the cross-section where the run-up angle point and central axis are located, the ball initial direction guideline will visually appear as a "single straight line," which can indicate the user's run-up included angle relative to the ball initial direction. This allows the user to repeatedly practice different run-up directions, improving training efficiency and effectiveness.

[0010] Optionally, the run-up guide mark further includes a plurality of run-up guide lines, each run-up angle point being provided on one run-up guide line, and if the cross section in which the guide line in the ball initial direction is located and the cross section in which the ball placement line is located are both perpendicular to the ground, then the cross section in which each run-up guide line is located is perpendicular to the ground.

[0011] In the above embodiment, the cross section on which the run-up guideline is located is the cross section on which the run-up angle point and the central axis are located. After "accurately placing the ball," when the user stands directly next to the "cross section on which the run-up guideline is located" that corresponds to the run-up angle to be practiced, the run-up guideline appears to the user as "a straight line" and can indicate the direction, improving the user's awareness of the run-up direction and improving the training efficiency and training effect of the user's run-up direction practice.

[0012] Optionally, the central axis is defined as the intersection of the cross section on which the ball initial direction guideline is located and the cross section on which the ball placement line is located, the mark area further includes a follow-through guide mark, the follow-through guide mark includes a plurality of follow-through angle points and a plurality of follow-through guidelines, different follow-through angle points have different included angles between the cross section on which the central axis is located and the cross section on which the ball initial direction guideline is located, each follow-through angle point is located on one follow-through guideline, and when the cross section on which the ball initial direction guideline is located and the cross section on which the ball placement line is located are both perpendicular to the ground, the cross sections on which each follow-through guideline is located are perpendicular to the ground.

[0013] In the above embodiment, when a user kicks a place kick, if the user follows through from different directions relative to the soccer ball, this affects factors such as the direction of force exerted by the user's foot when kicking. The cross section where the follow-through guideline is located is the cross section where the follow-through angle point and the central axis are located. After "accurately placing the ball," when the user stands directly next to the cross section where the follow-through guideline corresponding to the follow-through angle being practiced is located, the follow-through guideline appears to the user as a straight line, allowing the user to indicate the direction, improving the user's visibility of the follow-through direction and improving the training efficiency and training effect of the user's lateral follow-through practice.

[0014] Optionally, the kick point set further includes a first side spin point, the first side spin point being spaced apart from one of the plurality of kick reference points in a direction perpendicular to the cross section on which the ball initial direction guide line is located. In the above embodiment, when the user performs a place kick, they apply a force to the side of the target kick position that passes through the lateral direction of the ball center, thereby producing a side spin. After "accurate ball placement," the horizontal midline cross section is regarded as the "equator" position of the sphere, and if the first side spin point and the corresponding kick reference point are located at the close "latitude" position, after "accurate ball placement," the first side spin point will be located to the side of the corresponding kick reference point, and the user can kick toward the first side spin point to produce a side spin that is in the same direction as the ball's initial direction at the corresponding kick reference point. This allows the user to repeatedly practice side spin, improving training efficiency and effectiveness.

[0015] Optionally, the kick point set further includes a topspin point, the topspin point being spaced apart from the kick reference point, the topspin point being located on a cross section where the plurality of kick reference points are located, and when the cross section where the ball initial direction guideline is located and the cross section where the ball placement line is located are both perpendicular to the ground, the topspin point is located below one of the plurality of kick reference points.

[0016] In the above embodiment, when the user places a kick, they apply a force that passes above the center of the ball below the kick position at the target height, thereby producing a topspin kick. After "accurately placing the ball," the topspin point is located below the corresponding kick reference point, and by kicking toward the topspin point, the user can produce a topspin kick that is in the same direction as the ball's initial direction at the corresponding kick reference point. This allows the user to repeatedly practice topspin, improving training efficiency and effectiveness.

[0017] Optionally, the kick point set further includes a second side spin point, the second side spin point being spaced apart from the top spin point in a direction perpendicular to the cross section in which the ball initial direction guide line is located. In the above embodiment, when the user kicks a place kick, they apply a force to the side of the target kick that passes through the lateral side of the ball center, thereby producing a side spin. After "accurate ball placement," the horizontal midline cross section is regarded as the "equator" position of the sphere, and if the second side spin point and the corresponding top spin point are located at the close "latitude" position, then after "accurate ball placement," the second side spin point will be located to the side of the corresponding top spin point, and the user can kick toward the second side spin point to produce a side topspin corresponding to the topspin point, allowing the user to repeatedly practice side topspin and improving training efficiency and effectiveness.

[0018] Optionally, the mark area further includes a drawing assist guide mark, the drawing assist guide mark including a kick drawing assist line and a drawing assist kick reference point, the drawing assist kick reference point being located at the intersection of the kick drawing assist line and the horizontal midline cross section and having a completely blank area near the intersection, the completely blank area being spaced apart from the kick drawing assist line, and when the cross section on which the ball initial direction guide line is located and the cross section on which the ball placement line is located are both perpendicular to the ground, the cross section on which the kick drawing assist line is located is perpendicular to the ground.

[0019] In the above embodiment, after "accurately placing the ball," the cross section on which the kick drawing assist line is located also becomes perpendicular to the ground, and the kick drawing assist line appears to the user as "a straight line," indicating the set target kick direction. Furthermore, by referring to the kick drawing assist line and the intersection position between the kick drawing assist line and the horizontal midline cross section, i.e., the drawing assist kick reference point, the user can draw a point or a line in the surrounding area as needed to set a new kick point and measure a new kick effect.

[0020] By providing a completely blank area, it becomes easy to color with a permanent marker, and the user can draw auxiliary marks such as kick point sets, run-up guide marks, or follow-through guide marks of various effects that he or she wants to test within the completely blank area, which helps to improve the efficiency of training.

[0021] Optionally, the central axis is defined as the intersection of the cross section on which the ball initial direction guideline is located and the cross section on which the ball placement line is located, and the mark area further includes a first ball placement point and a second ball placement point, the first ball placement point and the second ball placement point being located at opposite ends of the central axis, respectively.

[0022] In the above embodiment, after "placing the ball accurately", one of the first and second ball placement points must be located at the top of the ball and the other at the bottom of the ball. The user can adjust the ball placement posture by adjusting the positions of the first and second ball placement points relative to the ground, which improves the accuracy and efficiency of ball placement. Left-footed and right-footed players can jointly use the original marks on the ball (except for the kick point set / penalty kick guide marks), which helps to improve training efficiency.

[0023] Optionally, the mark area is painted onto the sphere with a pigment, or pasted on the sphere with a sticker, or printed onto the sphere.

[0024] In the above embodiment, the pigment coating, paper pasting, and printing methods improve the speed and accuracy with which the marking area is placed on the ball, thereby improving the productivity of soccer balls.

[0025] An embodiment of the present disclosure also provides a training component, the training component including a supporting foot marker and the soccer ball as described above, the supporting foot marker including a lateral positioning segment, a first mark portion and a second mark portion, the lateral positioning segment being perpendicular to a cross section on which a guideline for the ball initial direction is located during use, the second mark portion being located at an end of the lateral positioning segment, the first mark portion being provided on the lateral positioning segment and being movably provided on the lateral positioning segment, for adjusting the distance between the first mark portion and the second mark portion, guiding a preset landing point of the user's supporting foot on the ground, and configuring a positional relationship between the supporting foot and the soccer ball.

[0026] In the above embodiment, the supporting foot marker is first placed approximately on the penalty mark side of the ground, with the lateral positioning segment perpendicular to the ball's initial direction course, and then held in place. After "accurately placing the ball," the soccer ball is translated left or right to set the distance from the second marking portion of the cross section where the ball's initial direction guideline is located to the radius of the sphere, and then held in place. The first marking portion is then slid along the lateral positioning segment to adjust the cross section where the ball's initial direction guideline is located and the lateral distance of the first marking portion relative to the second marking portion. Finally, the soccer ball is moved forward or backward on the cross section where the ball's initial direction guideline is located to determine the position of the lateral positioning segment projected orthogonally onto the ground relative to the kick point set, thereby adjusting the positional relationship between the supporting foot's landing point and the actual kick point. This provides the user with a guide to the "correct standing position," allowing the user to repeatedly practice the standing position of the supporting foot and improve training effectiveness.

[0027] Optionally, the support foot marker includes a length reference segment and a lateral positioning segment, the length reference segment is connected to the lateral positioning segment and is connected to the position of the second mark portion, the length of the length reference segment is used as a dimensional reference when adjusting the distance between the first mark portion and the second mark portion, and the lateral positioning segment is made of a soft rope material.

[0028] In the above embodiment, by folding the length reference segment so that it overlaps parallel to the lateral positioning segment and sliding the first mark portion based on the length of the length reference segment to adjust its position, the position of the first mark portion relative to the second mark portion or the actual kick point can be quickly adjusted, which helps to improve training efficiency. By limiting the material of the lateral positioning segment, the lateral positioning segment is prevented from being crushed by the soccer ball shoes during use, which helps to improve the lifespan of the lateral positioning segment and ensure the training effect.

[0029] Optionally, the mark area further includes a penalty kick guide mark, which includes a first penalty kick angle point, a second penalty kick angle point, a third penalty kick angle point, and a fourth penalty kick angle point, each of which is used to aim at the four corners of the goal when instructing the user to take a penalty kick, and the area formed by connecting the first penalty kick angle point, the second penalty kick angle point, the fourth penalty kick angle point, and the third penalty kick angle point in order instructs the user to aim at a range of kick points within the goal area when instructing the user to take a penalty kick.

[0030] In the above embodiment, the place kick includes a penalty kick taken from a penalty mark in front of the goal, and the relative positions of the first penalty kick angle point, second penalty kick angle point, third penalty kick angle point, and fourth penalty kick angle point to the center of the sphere can correspond to the four corners of the goal, respectively, allowing the user to repeatedly practice kicking the ball into the corner of the goal when taking a penalty kick, thereby improving training efficiency and effectiveness. The first penalty kick angle point, the second penalty kick angle point, the fourth penalty kick angle point, and the third penalty kick angle point are connected in order, and the area within the range of the four points corresponds to the goal area, allowing the user to repeatedly practice kicking to a position within the goal area when taking a penalty kick, thereby improving training efficiency and effectiveness. [Effects of the Invention]

[0031] Compared with the prior art, the advantages of the embodiments of the present disclosure are as follows: The soccer ball and training components guide the user, allowing them to quickly place the ball and quickly aim at the kick target using the ball initial direction guidelines and ball placement lines when practicing place kicks with the soccer ball of the present disclosure. This allows for accurate ball placement, and the kick reference point is accurately fixed relative to the ground, the ball, and the predetermined kick target. The exact approach and the ball's flight direction and trajectory after the kick are also fixed. Based on the effect of the ball initial direction, the user can determine whether they have accurately and effectively hit the desired ball with their complete set of movements. They can also refine and solidify each element of the movement, such as the approach angle and course, the landing movement of the supporting foot, kicking posture, and follow-through. After mastering effective movements, they can form movement habits and muscle memory, allowing them to apply the details of the skilled movements to stable kicks even when kicking a soccer ball without a marking area. Therefore, practicing with a soccer ball with the marking area described above can improve the efficiency and effectiveness of place kick training. [Brief explanation of the drawings]

[0032] In order to clarify the technical concept of the embodiments of the present disclosure, the drawings in the embodiments will be briefly described below. However, the drawings only show some embodiments of the present disclosure and should not be considered as limiting the scope. [Figure 1] 1 is a schematic diagram of a soccer ball provided in an embodiment of the present disclosure. [Figure 2] 1 is a schematic diagram of a soccer ball provided in an embodiment of the present disclosure. [Figure 3] 1 is a schematic diagram of a soccer ball provided in an embodiment of the present disclosure. [Figure 4] 1 is a schematic diagram of a soccer ball provided in an embodiment of the present disclosure. [Figure 5]1 is a reference schematic diagram of the flight direction of a soccer ball provided in an embodiment of the present disclosure. [Figure 6] FIG. 1 is a schematic block diagram of a training component and user interaction provided in an embodiment of the present disclosure. [Figure 7] 1 is a schematic diagram of a visual field of a user's eye relative to a soccer ball provided in an embodiment of the present disclosure. FIG. [Figure 8] FIG. 10 is a schematic diagram of a second approach course provided in an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0033] In order to make the objectives, technical means, and advantages of the embodiments of the present disclosure more clear, the technical means in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, but it is clear that the described embodiments are not all embodiments but some embodiments of the present disclosure. Generally, the components of the embodiments of the present disclosure described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the present disclosure for which protection is sought, but represents only selected embodiments of the present disclosure. All other embodiments obtained by those skilled in the art based on the embodiments in the present disclosure without performing creative labor belong to the scope of protection of the present disclosure. It should be noted that like reference numerals and letters represent like items in the following drawings, so that once an item is defined in a drawing, it need not be further defined or explained in subsequent drawings.

[0034] In describing this disclosure, any orientation or positional relationship indicated by terms such as "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" is based on that shown in the accompanying drawings or that customarily oriented when the product of the present invention is used, and is intended solely to facilitate and simplify the description of this disclosure, and does not imply or imply a requirement that the referenced devices or elements must be in a particular orientation, configured, or operated in a particular orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, when terms such as "first," "second," "third," etc. appear, they are used for distinguishing and descriptive purposes only and cannot be understood to indicate or imply relative importance. Also, when you see terms like "horizontal," "vertical," and "suspended," it doesn't mean that the part needs to be absolutely horizontal or suspended, but rather that it can be tilted slightly. "Horizontal" simply means that the direction is more horizontal than "vertical," but it doesn't mean that the structure must be perfectly horizontal, it can be tilted slightly.

[0035] It should be noted that when the terms "installation," "mounting," "coupled," "connection," etc. appear in the description of this disclosure, they should be understood in a broad sense unless otherwise expressly specified or limited. For example, they may refer to a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or a connection between two elements. Those skilled in the art can understand the specific meaning of the above terms in this disclosure in specific cases.

[0036] It should be noted that features in the embodiments of the present disclosure can be combined with each other without conflict. The embodiments of the present disclosure provide a soccer ball, a training component, and a training device. The soccer ball has a sphere and a marking area on the surface of the sphere. The marking area includes a ball initial direction guideline, a ball placement line, and a kick point set, each of which is set on the surface of the sphere. The ball initial direction guideline and the ball placement line are located on different cross sections. Each cross section is a cross section passing through the center of the sphere. The kick point set includes multiple kick reference points distributed at intervals. The cross section on which the distribution path of the multiple kick reference points is located coincides with the cross section on which the ball initial direction guideline is located. The horizontal midline cross section is defined as the cross section passing through the center of the sphere. When the cross section on which the ball initial direction guideline is located and the cross section on which the ball placement line is located are both perpendicular to the ground, the horizontal midline cross section is parallel to the ground, and the multiple kick reference points are distributed downward from the horizontal midline cross section.

[0037] In mathematical definition, a sphere is a spatial geometry in which a semicircle rotates once around a line with a diameter, a sphere is a solid figure with a continuous curved surface, and a geometry enclosed by a spherical surface is called a sphere. The soccer ball in this presentation belongs to the sphere described in this definition. All points on the sphere are calculated and aligned using tools such as "Spherical Coordinates", "Longitudinal Coordinates", and "Arc Length".

[0038] The ball initial direction guideline, ball placement line, run-up guideline, and kick reference point distribution path are circumferential lines where a cross section passing through the center of the sphere intersects with the spherical surface of the sphere. After the user and the sphere rotate relative to each other, when standing directly beside these cross sections, i.e., with one eye in front of the cross section, the other eye behind the cross section, and the nose passing through the cross section, the lines of the related cross sections within the visual marking area will appear to overlap as a straight line. Due to the included angle relationship between the ball initial direction guideline and the ball placement line with respect to the ground, after the user rotates the sphere in place, if the cross section where the ball initial direction guideline is located is perpendicular to the ground, the ball initial direction guideline will appear to the user to be "perpendicular" to the ground. If the cross section where the ball placement line is located is perpendicular to the ground, the ball placement line will appear to the user to be "perpendicular" to the ground. Furthermore, when a user stands directly next to the cross section where the guideline in the ball initial direction, which is "perpendicular" to the ground, is located, the guideline in the ball initial direction visually appears to the user as "a single straight line" and can be used to indicate direction.

[0039] Therefore, when the cross section of the ball where the ball initial direction guideline and the ball placement line are located are perpendicular to the ground, by aligning the ball initial direction guideline with the preset target direction, the position of the mark area on the ball relative to the ground and the ball initial direction target can be determined, achieving "accurate ball placement" and improving ball placement efficiency and training efficiency. All of the multiple kick reference points are located on the cross section where the ball initial direction guideline is located, and by aligning the "straight line" indicated by the ball initial direction guideline with the preset target direction, the flight direction of the ball when the user kicks through the kick reference point can be indicated.

[0040] After "accurate ball placement," each kick reference point is distributed downward from the horizontal midline cross section. The user kicks the ball at the position indicated by each kick reference point, sending the ball flying in the direction indicated by the ball initial direction guideline. At the same time, the farther away from the horizontal midline cross section, i.e., the lower the kick, the higher the launch angle of the ball. Therefore, the user can practice by kicking the ball to the corresponding kick reference point according to the angle required for the height of the ball initial direction being practiced. When a user practices place kicks using the soccer ball disclosed herein, the user can quickly complete ball placement using the ball initial direction guideline and ball placement line, quickly aligning the ball with the kick target. This quickly completes "accurate ball placement," and the positions of each kick reference point relative to the ground, the ball, and the predetermined kick target are accurately fixed. At this time, after an accurate run-up and kick, the ball's flight direction and trajectory are also fixed. Based on the initial direction of the ball after the kick, the user can determine whether the kick was accurately and effectively made at the designated kick point on the desired ball during their complete set of movements. They can also improve and solidify each element of the movement, such as the angle and course of the run-up, the landing of the supporting foot, the kicking posture, and the follow-through. After mastering effective movements, they can form movement habits and muscle memory. Therefore, even when kicking a soccer ball without a marking area, they can apply the details of the skilled movements described above to achieve stability and achieve the specific kicking effect they have trained. Therefore, using a soccer ball practice device with such a marking area can improve the efficiency and effectiveness of place kick training.

[0041] The ball placement line is one of the most important elements of using a soccer ball, because if the soccer ball is positioned correctly on the ball placement line, all other marking elements on the ball surface will also be positioned correctly so that it can be used for training, otherwise they will all be misaligned, incorrect or invalid.

[0042] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The following embodiments and features of the embodiments can be combined with each other if there is no conflict. Referring to Fig. 1, one embodiment of the present disclosure provides a soccer ball 100 shown in Fig. 6 for use by a user 1000 in place kick training. By training in place kicks using soccer ball 100 of the present disclosure, user 1000 controls the flight trajectory of sphere 1 when kicking a place kick. Optionally, sphere 1 includes an inner hull (not shown) and an outer skin that encases the inner hull, and both the outer skin and the inner hull are spherical with their centers overlapping.

[0043] 1 and 2, soccer ball 100 optionally has a sphere 1 and a mark area 2 provided on the surface of sphere 1. Mark area 2 includes a ball initial direction guide line 21, a ball placement line 22, and a kick point set 24, each provided on the surface of sphere 1. Optionally, mark area 2 is provided on the surface of the outer shell. Soccer ball 100 has a sphere 1 and a mark area 2 provided on the surface of sphere 1. Mark area 2 includes a guide line 21 for indicating the ball initial direction, a ball placement line 22, and a kick point set 24, each of which is provided on the surface of sphere 1.

[0044] The ball initial direction guide line 21 and the ball placement line 22 are located on different cross sections. Each cross section passes through the center of the sphere 1. The kick point set 24 includes multiple kick reference points 241 distributed at intervals. The cross section on which the distribution path of the multiple kick reference points 241 is located overlaps with the cross section on which the ball initial direction guide line 21 is located. The horizontal midline cross section 231 is defined as the cross section that passes through the center of the sphere 1. The central axis 232 is defined as the intersection line between the cross section on which the ball initial direction guide line 21 is located and the cross section on which the ball placement line 22 is located. When the cross section where the ball initial direction guide line 21 is located and the cross section where the ball placement line 22 is located are both perpendicular to the ground, the horizontal midline cross section 231 is parallel to the ground, the central axis 232 is perpendicular to the ground, and multiple kick reference points 241 are distributed downward from the horizontal midline cross section 231.

[0045] The ball initial direction guideline 21, the ball placement line 22, and the distribution path of the kick reference point 241 are all circumferential lines where a cross section passing through the center of the sphere 1 intersects with the spherical surface of the sphere 1. When the user 1000 and the sphere 1 rotate relative to each other, these lines indicating the mark area 2 appear to be overlapping straight lines. Based on the included angular relationship between the ball initial direction guideline 21 and the ball placement line 22 with respect to the ground, after the user 1000 rotates the sphere 1 on the spot to adjust the point where the sphere 1 touches the ground, if the cross section where the ball initial direction guideline 21 is located is perpendicular to the ground, the ball initial direction guideline 21 appears to be "perpendicular" to the ground to the user 1000. If the cross section where the ball placement line 22 is located is perpendicular to the ground, the ball placement line 22 appears to be "perpendicular" to the ground to the user 1000. Furthermore, when the user 1000 is standing directly beside the cross section where the ball initial direction guide line 21 is located, the ball initial direction guide line 21 appears to the user 1000 as a "single straight line" and can be used to indicate direction. The multiple kick reference points 241 are all located on the cross section where the ball initial direction guide line 21 is located, and by aligning the "straight line" indicated by the ball initial direction guide line 21 with the direction of a predetermined target, the flight direction of the sphere 1 when the user 1000 kicks through the kick reference point 241 can be guided.

[0046] Therefore, by placing the ball 1 so that the cross section where the ball initial direction guideline 21 and the ball placement line 22 are located is perpendicular to the ground, and when the ball initial direction guideline 21 is aligned with the predetermined target direction, the position of the mark area 2 on the ball 1 relative to the ground can be determined, thereby achieving "accurate ball placement," improving ball placement efficiency and training efficiency. Therefore, the steps in "accurate ball placement" are: 1: Make the ball initial direction guideline 21 "perpendicular" to the ground; 2: Make the ball placement line 22 "perpendicular" to the ground; and 3: Rotate the soccer ball on the spot to align the ball initial direction guideline 21 with the direction of the predetermined kick target.

[0047] After "accurately placing the ball," the kick reference points 241 are distributed downward from the horizontal midline cross section 231, and the user 1000 kicks at the positions indicated by the kick reference points 241, launching the sphere 1 in the direction indicated by the ball initial direction guideline 21. At the same time, the farther away from the horizontal midline cross section 231, i.e., the lower the kick is toward the kick reference point 241, the higher the launch angle of the sphere 1 (the angle between the ball initial direction line and the ground). This allows the user 1000 to practice by kicking the ball into the corresponding kick reference point 241 as needed for the angle corresponding to the height of the ball initial direction being practiced.

[0048] When training for place kicks using the soccer ball 100 of the present disclosure, the user 1000 can quickly complete ball placement and quickly aim the ball at the target using the ball initial direction guideline 21 and ball placement line 22, quickly completing "accurate ball placement." The position of each kick reference point 241 relative to the ground, the ball 1, and the predetermined kick target is accurately fixed. At this time, the accurate run-up and the flight direction and trajectory of the ball 1 after the kick are also fixed. The user 1000 can determine whether their full set of movements accurately and efficiently hit the kick point on the desired ball 1 based on the effect of the ball initial direction after the kick. They can then refine and solidify each element of the movement, such as the run-up angle and course, the landing of the supporting foot 1002, the kicking posture, and the follow-through movement. After becoming proficient in effective movements, they can form movement habits and muscle memory. Therefore, even when kicking with a soccer ball 100 that does not have a marking area 2, the details of the skilled movements described above can be applied, consistently achieving the specific kick effect they have trained. Therefore, by practicing using soccer ball 100 equipped with the mark area 2, it is possible to improve the efficiency and effectiveness of place kick training.

[0049] 1 and 2, optionally, the angle between both ends of the ball initial direction guide line 21 and the center of the sphere 1 is 90°. The angle between both ends of the ball placement line 22 and the center of the sphere 1 is also 90°. One end of the ball initial direction guide line 21 is connected to one end of the ball placement line 22 and to one end of the central axis 232, and the other end of the ball initial direction guide line 21 and the other end of the ball placement line 22 are both located on the horizontal midline cross section 231. Optionally, it can be understood that the cross section on which the ball initial direction guide line 21 is located and the cross section on which the ball placement line 22 is located are perpendicular to each other.

[0050] Optionally, the ball initial direction guideline 21 may be a continuous line or a discontinuous line such as a dashed line, a dot-dash line, or a double-dot-dash line. The ball placement line 22 may be a continuous line or a discontinuous line such as a dashed line, a dot-dash line, or a double-dot-dash line. The kick reference point 241 may be a point of intersection of two lines, a circular point, an elliptical point, a triangular point, a rectangular point, a polygonal point, or an irregularly shaped point, but is not limited to these, and may be a solid point or a hollow point.

[0051] 1 and 5, the angle between two adjacent kick reference points 241 and the center of sphere 1 optionally represents the angle between the launch trajectories of sphere 1 when the ball is touched via those two kick reference points 241. As an example, kick reference point 241a located on horizontal midline cross section 231 is used for practicing place kicks that stick to the ground, kick reference point 241b is used for practicing place kicks with a flight elevation angle of 8.4°, and kick reference point 241c is used for practicing place kicks with a flight elevation angle of 14.7°. If a standard No. 5 ball with a circumference of 69 cm is used as sphere 1, the arc length between kick reference point 241b and kick reference point 241a is 1.61 cm, and the arc length between kick reference point 241c and kick reference point 241a is approximately 2.82 cm.

[0052] 7, in an embodiment of the present invention, without a precise ball placement line 22 as a reference, even if all other steps are accurate, the horizontal midline cross section 231 of the sphere will not be truly parallel to the ground, and all kick point sets 24 will not be in truly accurate positions. Without the ball placement line 22, the user will have to place the balls based solely on feel and estimation, which will inevitably result in ball placement errors and the positions of all point / line elements on the sphere being misaligned. Therefore, the ball placement line 22 is essential and is the first priority.

[0053] Specifically, for example, if a shot is taken from outside the penalty area line 18Y / 16.5m towards the top left corner of the goal, you can refer to Table 1 below. [Table 1] Even if the cross section where the guide line 21 for the ball initial direction is located is perpendicular to the ball initial direction and the orientation is completely correct, i.e., even if the ball initial direction is not shifted left or right, if the first ball placement point 281 cannot be accurately positioned at the very top, even if the first ball placement point 281 is shifted forward or backward even slightly, the elevation angle of the ball initial direction will be significantly shifted (as shown in Table 1, if the first ball placement point is shifted backward by 1 cm, the soccer ball 100 will be 154 cm above the goal beam at the goal). A strict approach must be used to ensure that the central axis 232 is perpendicular to the ground.

[0054] It should be noted that the upper and lower ends of the defined central axis are the first ball placement point 281 and the second ball placement point 282, respectively, but if the two ball placement points are used alone, the ball placement cannot be completed. According to visual theory, the human eye is at the height of the ball center (about 11 cm above the ground, in this case, the head where the human eye is located must be close to the ground), and if a human is at an infinite distance from the soccer ball 100 at the same time, it is obviously impossible to observe two ball placement points at the same time in a baseball stadium.

[0055] See Figure 7. In fact, when observing ball placement, the human body is usually in a natural standing position, so the height of the human eye from the ground is 1.5 to 2 meters (slightly shorter than the human height). Furthermore, since the standing position is usually within a few meters of the soccer ball 100, the top of the soccer ball 100 is usually visible. However, since the base of the soccer ball 100 is close to the grass (i.e., its height from the ground is approximately 0), the eye position is high and when observing the base, the view is blocked by the sphere. As a result, the defined central axis cannot be directly observed, and therefore the defined central axis cannot be used to assist in accurate ball placement. Meanwhile, the height of the horizontal midline 231 of the soccer ball is approximately 11 cm, and at this time, it appears to the human eye as a circular arc. It is also impossible to directly determine whether the horizontal midline 231 is actually parallel to the ground.

[0056] To achieve this, it is necessary to solve the problem using a ball placement line 22. The ball placement line 22 is the line where a cross section (which can be formed by a "three-point one plane") passing through both ends of the defined central axis intersects with the sphere. In a natural posture, a person can easily determine whether the soccer ball has been placed correctly by checking whether this ball placement line is perpendicular to the ground, and can make a simple adjustment to position the kick point accurately.

[0057] The ball placement line 22 is one of the key elements when training with the soccer ball 100, because by correctly positioning the soccer ball 100 via the ball placement line 22, all other elements on the ball surface (including marks) are also positioned correctly and can be used for training, otherwise they will all be misaligned, incorrect, or invalid. 1 and 2, the mark area 2 optionally further includes a run-up guide mark 25. The run-up guide mark 25 includes a plurality of run-up angle points 251. The angles between the cross section where the different run-up angle points 251 and the central axis 232 are located and the cross section where the guide line 21 of the ball initial direction is located are different. The cross section where each run-up angle point 251 and the central axis 232 are located is called a "run-up cross section."

[0058] It is important to note that each hitting motion must include a run-up. Different kicking motions have different requirements for the angle between the direction of the run-up course and the ball's initial direction during the run-up. Only the run-up guide mark can accurately guide the run-up angle to meet the required foot-out follow-through angle. When the user 1000 kicks a place kick, taking a run-up from different directions relative to the soccer ball 100 affects the direction of force of the kicking foot 1001 when the user 1000 kicks. Each "run-up section" forms an included angle with the section on which the ball initial direction guideline 21 is located, and can be used to indicate the run-up angle of the user 1000. After "accurately placing the ball," if the user 1000 stands directly to the side of the "run-up section" (i.e., one eye is in front of the section, the other eye is behind the section, and the nose passes through the section), the "run-up section" visually appears as "a straight line," and the user 1000 can indicate the run-up included angle relative to the ball initial direction, allowing the user 1000 to repeatedly practice different run-up directions, improving training efficiency and training effect.

[0059] 1 and 2, the run-up guide mark 2 optionally further includes a plurality of run-up guide lines 252. A run-up guide line 252 is provided at each run-up angle point 251. When the cross section where the guide line 21 in the ball initial direction is located and the cross section where the ball placement line 22 is located are both perpendicular to the ground, the cross sections where the run-up guide lines 252 are located are also perpendicular to the ground. The cross sections where each run-up guide line 252 is located become the "run-up cross section" of the corresponding run-up angle point 251.

[0060] The cross section where the run-up guideline 252 is located is the "run-up cross section" corresponding to the run-up angle point 251 and the central axis 232. After "accurately placing the ball," if the user 1000 stands directly beside the "run-up cross section" where the corresponding run-up angle point 251 is located, the run-up guideline 252 appears to the user 1000 as a "single straight line" and can indicate the angle between the run-up and the ball initial direction, thereby improving the user's 1000 visibility of the run-up direction and helping to improve the training efficiency and training effect of the user 1000 in run-up direction practice.

[0061] 1 and 2, multiple run-up angle points 251 may be optionally provided on the horizontal midline cross section 231. The multiple run-up angle points 251 may be located such that one side of the kick reference point 241 provided on the horizontal midline cross section 231 is located within a 90° range from the center of the sphere 1, or such that the opposite side of the kick reference point 241 provided on the horizontal midline cross section 231 is located within a 90° range from the center of the sphere 1, or such that multiple run-up angle points 251 may be provided on both sides of the kick reference point 241 provided on the horizontal midline cross section 231.

[0062] As an example, run-up angle point 251a and run-up angle point 251b are both located on horizontal midline cross section 231. The angle between run-up angle point 251a and kick reference point 241 located on horizontal midline cross section 231 and the center of sphere 1 is 45°, and the angle between run-up angle point 251b and kick reference point 241 located on horizontal midline cross section 231 and the center of sphere 1 is also 45°. Run-up angle point 251a may indicate a run-up angle direction of 45° to the left, and run-up angle point 251b may indicate a run-up angle direction of 45° to the right, and the other run-up angle points 251 may be used to indicate run-up angle directions of 30°, 60°, 70°, etc.

[0063] Optionally, the run-up angle point 251 may be a solid or hollow point, including but not limited to a point of intersection of two lines, a circular point, an elliptical point, a triangular point, a rectangular point, a polygonal point, or an irregular shaped point. Referring to Figures 1 and 2, optionally, one end of each approach guide line 252 is connected to the approach angle point 251, and the other end of each approach guide line 252 is connected to one end of the ball initial direction guide line 21 and one end of the ball placement line 22.

[0064] Optionally, the run-up guide line 252 may be a continuous line or a discontinuous line such as a dashed line, a dot-dash line, or a double-dot-dash line. Optionally, the run-up guideline 252 can be omitted at the location of a part of the run-up angle point 251 used by the left-footed player, thereby reducing the difficulty for the user 1000 to recognize the mark area 2 when using the soccer ball 100. At the same time, the run-up angle point 251 is left so that the user 1000 can draw the run-up guideline 252 by himself / herself according to actual needs.

[0065] 1, kick point set 24 optionally also includes a topspin point 242. Topspin point 242 is spaced apart from kick reference point 241. Topspin point 242 is located on a cross section where multiple kick reference points 241 are located. When the cross section where guide line 21 for the ball initial direction is located and the cross section where ball placement line 22 is located are both perpendicular to the ground, topspin point 242 is located below one of multiple kick reference points 241.

[0066] When user 1000 performs a place kick, he or she applies a force below the kick point at the target height that passes over the center of the ball instead of passing through the center of the ball, thereby kicking out a ball with the same ball initial direction angle as the "kick point at the target height" but with a topspin rotation. After "accurately placing the ball", topspin point 242 is located below corresponding kick reference point 241, and user 1000 kicks towards topspin point 242, thereby kicking out a topspin with the corresponding kick reference point 241, allowing user 1000 to repeatedly practice topspin and improve training efficiency and training effect.

[0067] Optionally, there may be a plurality of topspin points 242. Each topspin point 242 is located on the side where one kick reference point 241 is away from the guide line 21 in the ball initial direction. Optionally, the top spin point 242 may be a solid or hollow point, including, but not limited to, a point of intersection of two lines, a circular point, an elliptical point, a triangular point, a square point, a polygonal point, or an irregular shaped point. 1, optionally, the kick point set 24 further includes a first side spin point 243 and a second side spin point 244. In a direction perpendicular to the cross section on which the guide line 21 of the ball initial direction is located, the first side spin point 243 is spaced apart from one of the plurality of kick reference points 241. In a direction perpendicular to the cross section on which the guide line 21 of the ball initial direction is located, the second side spin point 244 and the top spin point 242 are spaced apart from each other.

[0068] When user 1000 kicks a place kick, he or she applies a force to the side of the target kick position that passes through the center of the ball instead of passing through the center of the ball, thereby producing a side spin rotation that is the same as the ball initial direction angle of the "kick point at the target height." After "accurately placing the ball," if horizontal midline cross section 231 is considered to be the "equator" position of sphere 1, first side spin point 243 and corresponding kick reference point 241 are located at a nearby "latitude" position, and second side spin point 244 and corresponding top spin point 242 are located at a nearby "latitude" position. After "accurate ball placement," the first side spin point 243 is located to the side of the corresponding kick reference point 241, and the second side spin point 244 is located to the side of the corresponding top spin point 242. By kicking toward the first side spin point 243, the user 1000 can kick out a side spin corresponding to the kick reference point 241, and by kicking toward the second side spin point 244, the user 1000 can kick out a "side topspin" corresponding to the topspin point 242. The user 1000 can repeatedly practice side topspin, improving training efficiency and training effect.

[0069] 1 , optionally, the distance between the first side spin point 243 and the horizontal midline cross section 231 is equal to the distance between the corresponding kick reference point 241 and the horizontal midline cross section 231. The distance between the second side spin point 244 and the horizontal midline cross section 231 is equal to the distance between the corresponding top spin point 242 and the horizontal midline cross section 231. Optionally, the deviation of the included angle between the first side spin point 243 and the horizontal midline cross section 231 relative to the center of the sphere 1 from the included angle between the corresponding kick reference point 241 and the horizontal midline cross section 231 relative to the center of the sphere 1 is within 5°. The deviation of the included angle between the second side spin point 244 and the horizontal midline cross section 231 relative to the center of the sphere 1 from the included angle between the corresponding top spin point 242 and the horizontal midline cross section 231 relative to the center of the sphere 1 is within 5°.

[0070] As can be seen from FIG. 1, as an option, after "accurate ball placement," first side spin points 243 are provided to the left and right of kick reference point 241, and second side spin points 244 are provided to the left and right of top spin point 242, allowing user 1000 to take a running start from either the left or right foot and practice side spin with either the left or right foot. Optionally, there may be a plurality of first side spin points 243. Two first side spin points 243 are located on either side of one kick reference point 241 in a direction perpendicular to the cross section in which the guide line 21 of the ball initial direction is located. Optionally, there may be a plurality of second side spin points 244. Two second side spin points 244 are located on either side of one top spin point 242 in a direction perpendicular to the cross section in which the guide line 21 of the ball initial direction is located.

[0071] Optionally, the first side spin point 243 may be a solid or hollow point, including, but not limited to, a point of intersection of two lines, a circular point, an elliptical point, a triangular point, a square point, a polygonal point, or an irregular shape. The second side spin point 244 may be a solid or hollow point, including, but not limited to, a point of intersection of two lines, a circular point, an elliptical point, a triangular point, a square point, a polygonal point, or an irregular shape.

[0072] Referring to FIG. 8, the central axis may be defined as the intersection of the cross section on which the ball initial direction guide line 21 is located and the cross section on which the ball placement line 22 is located. The mark area 2 further includes a follow-through guide mark 29, which includes multiple follow-through angle points 291 (including a first follow-through angle point 291a and a second follow-through angle point 291b) and multiple follow-through guidelines (including a first follow-through guide line 29a and a second follow-through guide line 29b). The cross sections on which different follow-through angle points 291 and the central axis are located have different angles with the cross section on which the ball initial direction guide line is located. One follow-through guide line is provided for each follow-through angle point 291. When the cross section on which the ball initial direction guide line 21 is located and the cross section on which the ball placement line 22 is located are both perpendicular to the ground, the cross sections on which each follow-through guide line is located are also perpendicular to the ground.

[0073] The follow-through movement (which can also be understood as the foot-out movement) is the follow-through movement with a specific displacement direction and movement trajectory that occurs when the ball-contacting part of the foot makes contact with the kick point on the spherical surface during a kick, and the initial follow-through angle varies depending on the type of kick. Specifically, when a user kicks a place kick, if the user follows through from different directions relative to the soccer ball, this affects factors such as the direction of force the user exerts when kicking. The cross section on which each follow-through angle point 291 and the central axis are located forms an angle with the cross section on which the guide line 21 in the ball initial direction is located, and this angle is used to guide the user's follow-through lateral angle.

[0074] In the above embodiment, the cross section where the follow-through guideline is located is the cross section where the follow-through angle point 291 and the central axis are located. After "accurate ball placement," when the user stands directly next to the cross section where the follow-through guideline corresponding to the follow-through angle to be practiced is located, the follow-through guideline appears to the user as a straight line and can indicate the direction, improving the user's awareness of the follow-through direction and improving the efficiency and effectiveness of the user's lateral follow-through training.

[0075] It is noteworthy that when performing a "side spin volley with the inside instep," the player takes a natural approach along the second approach course 251B, which forms an angle γ with the ball initial direction. In this case, γ=45°, and the direction of the supporting foot 1002 after the supporting foot 1002 lands and the kicking foot 1001 are generally almost the same as the follow-through foot direction, forming an angle of approximately 30° with the approach line. At this time, the angle β (β=15°) automatically forms between the initial follow-through foot direction (lateral) and the ball initial direction (lateral).

[0076] In this case, if the cross section on which the follow-through guideline is located is positioned so that it forms a 15-degree angle with the cross section on which the ball initial direction guideline 21 is located, when the kicking foot 1001 is kicked out to the first side spin point a243a at the medial part of the metatarsal on the instep of the right foot, the initial direction of the actual follow-through foot-exit line (lateral direction) will naturally become parallel to the 15-degree first follow-through guideline 29a on the sphere, and the soccer ball 100 will generate a stable side spin and fly forward accurately along the direction of the ball initial direction guideline. Observing whether the initial direction of the actual first follow-through trajectory 292a in the lateral direction is parallel to the first follow-through guideline 29a on the sphere can help determine whether the actual follow-through (lateral direction) angle is correct, and the user can standardize a movement posture that results in a natural and stable follow-through foot-exit (lateral direction) angle through practice.

[0077] Additionally, the amount of spin generated by each ball according to the follow-through angle is observed to determine whether it is appropriate and effective (the appropriate left / right displacement of the side spin arc ball for generating soccer ball 100 at a distance). For example, kicking first side spin point b 243b with a 60-degree run-up generates an actual second follow-through trajectory 292b that is parallel to second follow-through guideline 29b in the figure and forms a 30-degree horizontal angle with respect to the ball's initial direction. In this case, the amount of left / right displacement generated at a distance differs from that of soccer ball 100 when the run-up is 45 degrees and the follow-through foot is 15 degrees horizontal. Through the above adjustments and tests, the user can find the appropriate run-up angle and follow-through angle.

[0078] Referring to Figure 3, the mark area 2 optionally further includes a penalty kick guide mark 26. The penalty kick guide mark 26 includes a first penalty kick angle point 261, a second penalty kick angle point 262, a third penalty kick angle point 263, and a fourth penalty kick angle point 264 to instruct the user 1000 to aim at the four corners of the goal when taking a penalty kick. Place kicks include penalty kicks kicked from the penalty mark in front of the goal, and the relative positions of the first penalty kick angle point 261, the second penalty kick angle point 262, the third penalty kick angle point 263, and the fourth penalty kick angle point 264 to the center of the sphere 1 can correspond to the four corners of the goal, respectively, allowing the user 1000 to repeatedly practice kicking the ball to the corner of the goal during a penalty kick, thereby improving training efficiency and effectiveness.

[0079] Referring to FIG. 3 , optionally, the first penalty kick angle point 261 and the second penalty kick angle point 262 are located on the horizontal midline cross section 231. The first penalty kick angle point 261 and the second penalty kick angle point 262 are spaced apart. In use, the ball initial direction guide line 21 is directed toward the center of the goal, and the distance between the first penalty kick angle point 261 and the ball initial direction guide line 21 is equal to the distance between the second penalty kick angle point 262 and the ball initial direction guide line 21. The included angle between the first penalty kick angle point 261 and the second penalty kick angle point 262 and the center of the sphere 1 is between 35° and 39°. The cross section on which the third penalty kick angle point 263, the first penalty kick angle point 261, and the center of the sphere 1 are located is perpendicular to the horizontal midline cross section 231. The angles of the third penalty kick angle point 263 and the first penalty kick angle point 261 relative to the center of the sphere 1 are between 10.4° and 12.4°. The cross section on which the fourth penalty kick angle point 264, the second penalty kick angle point 262, and the center of the sphere 1 are located are perpendicular to the horizontal midline cross section 231. The angles of the fourth penalty kick angle point 264 and the second penalty kick angle point 262 relative to the center of the sphere 1 are between 10.4° and 12.4°. When the cross section on which the ball initial direction guide line 21 is located and the cross section on which the ball placing line 22 is located are both perpendicular to the ground, the third penalty kick angle point 263 and the fourth penalty kick angle point 264 are both located below the horizontal midline cross section 231.

[0080] This can be calculated based on the distance from the penalty mark to the goal (usually 12 yards, approximately 10.97 m), the size of the goal (usually 8 yards wide, approximately 7.32 m, and 8 feet high, approximately 2.44 m), and the size of ball 1 (for example, a standard size 5 ball has a diameter of approximately 22 cm). After "placing the ball accurately," the included angle between the bottom left corner of the goal and the bottom right corner of the goal and the penalty mark is approximately 36.9°, the included angle between the top left corner of the goal and the horizontal midline cross section 231 is approximately 11.4°, and the included angle between the top right corner of the goal and the horizontal midline cross section 231 is approximately 11.4°. Therefore, the relative positions of the first penalty kick angle point 261, the second penalty kick angle point 262, the third penalty kick angle point 263, and the fourth penalty kick angle point 264 to the center of the sphere 1 can approximately correspond to the four corners of the goal, respectively, allowing the user 1000 to repeatedly practice the position from which to kick into the goal corners during a penalty kick, improving training efficiency and effectiveness.

[0081] Referring to Figure 3, optionally, after "accurately placing the ball", when the first penalty kick angle point 261 is located at the kick reference point 241 provided on the horizontal midline cross section 231 of the sphere 1, the first penalty kick angle point 261 corresponds to the bottom right corner of the goal, the second penalty kick angle point 262 corresponds to the bottom left corner of the goal, the third penalty kick angle point 263 corresponds to the top right corner of the goal, and the fourth penalty kick angle point 264 corresponds to the top left corner of the goal.

[0082] As an example, the angles between the first penalty kick angle point 261 and the second penalty kick angle point 262 and the center of the sphere 1 are 35°, 36°, 36.9°, 37°, 37.5°, 38°, 38.5°, 39°, etc., the angles between the third penalty kick angle point 263 and the first penalty kick angle point 261 and the center of the sphere 1 are 10.4°, 11°, 11.4°, 12°, 12.4°, etc., and the angles between the fourth penalty kick angle point 264 and the second penalty kick angle point 262 and the center of the sphere 1 are 10.4°, 11°, 11.4°, 12°, 12.4°, etc.

[0083] Referring to Figure 3, as an option, the area formed by connecting the first penalty kick angle point 261, the second penalty kick angle point 262, the fourth penalty kick angle point 264, and the third penalty kick angle point 263 in order is the range in which the user 1000 aims for the kick contact point within the goal range when taking a penalty kick. After connecting the first penalty kick angle point 261, the second penalty kick angle point 262, the fourth penalty kick angle point 264, and the third penalty kick angle point 263, the area within the range of the four points corresponds to the goal range, allowing the user 1000 to repeatedly practice kicking the ball to a position within the goal range during a penalty kick, thereby improving training efficiency and effectiveness.

[0084] The penalty kick guide mark 26 further includes a first simulation goal line 265, a second simulation goal line 266, a third simulation goal line 267, and a fourth simulation goal line 268. Both ends of the first simulation goal line 265 respectively connect the first penalty kick angle point 261 and the third penalty kick angle point 263. The cross section on which the first simulation goal line 265 is located overlaps the cross section on which the first penalty kick angle point 261 and the central axis 232 are located. Both ends of the second simulation goal line 266 respectively connect the second penalty kick angle point 262 and the fourth penalty kick angle point 264. The cross section on which the second simulation goal line 266 is located overlaps the cross section on which the second penalty kick angle point 262 and the central axis 232 are located. Both ends of the third simulation goal line 267 respectively connect the third penalty kick angle point 263 and the fourth penalty kick angle point 264. Both ends of the fourth simulation goal line 268 respectively connect the first penalty kick angle point 261 and the second penalty kick angle point 262. The cross section on which the fourth simulation goal line 268 is located overlaps with the horizontal midline cross section 231 .

[0085] 1 and 3, optionally, multiple groups of ball initial direction guide lines 21, ball placement lines 22 and run-up guide marks 25 are provided, with kick point sets 24 associated with positions in one group and penalty kick guide marks 26 associated with positions in another group. Optionally, kick point sets 24 and penalty kick guide marks 26 may be associated with positions of ball initial direction guide lines 21, ball placement lines 22 and run-up guide marks 25 in the same group.

[0086] Optionally, the first penalty kick angle point 261, the second penalty kick angle point 262, the third penalty kick angle point 263, and the fourth penalty kick angle point 264 may be solid or hollow, including, but not limited to, the intersection of two lines, a circle, an ellipse, a triangle, a square, a polygon, or an irregular shape. The first simulation goal line 265, the second simulation goal line 266, the third simulation goal line 267, and the fourth simulation goal line 268 may be continuous lines or discontinuous lines such as dashed lines, dot-dash lines, or double-dot-dash lines.

[0087] 2 and 4, the mark area 2 optionally further includes a drawing assistance guide mark 27. The drawing assistance guide mark 27 includes a kick drawing assistance line 271. When the cross section on which the ball initial direction guide line 21 and the cross section on which the ball placement line 22 are located are both perpendicular to the ground, the cross section on which the kick drawing assistance line 271 is located is also perpendicular to the ground.

[0088] After "accurately placing the ball," the cross section on which the kick drawing auxiliary line 271 is located also becomes perpendicular to the ground, and the kick drawing auxiliary line 271 appears to the user 1000 as a "single straight line," indicating the set target kick direction. If necessary, the user 1000 can draw points or lines, such as the kick point set 24, run-up guide mark 25, or penalty kick guide mark 26, in the vicinity of the kick drawing auxiliary line 271 and the intersection of the kick drawing auxiliary line 271 and the horizontal midline cross section 231 (the kick center point). The user 1000 can then use the kick drawing auxiliary line 271 in conjunction with the ball initial direction guide line 21 to explore new kick effects. This allows the user 1000 to adjust training goals according to their actual needs and improve training efficiency and effectiveness.

[0089] Optionally, one end of the kick drawing assist line 271 is connected to one end of the ball initial direction guide line 21. The cross section on which the kick drawing assist line 271 is located overlaps with the cross section on which the ball initial direction guide line 21 is located. 2 and 4, the drawing assist guide mark 27 optionally further includes a drawing assist kick reference point 272. The drawing assist kick reference point 272 is located at the intersection of the kick drawing assist line 271 and the horizontal midline cross section 231. The drawing assist kick reference point 272 serves as a reference for the kick reference point 241 provided on the horizontal midline cross section 231.

[0090] It is worth noting that near this intersection there is a completely blank area outside the kick drawing aid line 271, and the spherical material of this blank area is a non-PVC material that can be colored with a permanent marker. In this blank area, auxiliary marks such as kick point sets, run-up guide marks, or follow-through guide marks can be placed to draw various effects you want to test. Optionally, if the cross section on which the ball initial direction guide line 21 is located and the cross section on which the ball placement line 22 is located are both perpendicular to the ground, and the ball initial direction guide line 21 and the ball placement line 22 are both located above the horizontal midline cross section 231, the kick drawing assistance line 271 is located below the horizontal midline cross section 231.

[0091] Optionally, the kick drawing assist line 271 may be a continuous line or a discontinuous line such as a dashed line, a dot-dash line, a double-dot-dash line, etc. The drawing assist kick reference point 272 may be a solid or hollow point, including, but not limited to, the intersection of two lines, a circular point, an elliptical point, a triangular point, a square point, a polygonal point, or an irregular shaped point. 1 and 2, the mark area 2 optionally further includes a first ball placement point 281 and a second ball placement point 282. The first ball placement point 281 and the second ball placement point 282 are located at opposite ends of the central axis 232, respectively.

[0092] After "placing the ball accurately," one of the first ball placing point 281 and the second ball placing point 282 must be located at the top of the ball 1, and the other at the bottom of the ball 1. The user 1000 can adjust the placing posture of the ball 1 by adjusting the positions of the first ball placing point 281 and the second ball placing point 282 relative to the ground, or can swap the positions of the first ball placing point 281 and the second ball placing point 282 by reversing their positions, allowing left-footed and right-footed players to jointly use most of the existing marks on the ball (except for the kick point set / penalty kick guide marks), which improves the accuracy and efficiency of placing the ball 1 and helps improve training efficiency.

[0093] Optionally, the first ball placement point 281 may be a solid or hollow point, including, but not limited to, a point of intersection of two lines, a circular point, an elliptical point, a triangular point, a square point, a polygonal point, or an irregular shaped point. The second ball placement point 282 may be a solid or hollow point, including, but not limited to, a point of intersection of two lines, a circular point, an elliptical point, a triangular point, a square point, a polygonal point, or an irregular shaped point.

[0094] Optionally, the ball initial direction guide line 21, ball placement line 22, kick reference point 241, top spin point 242, first side spin point 243, second side spin point 244, run-up guide mark 25, penalty kick guide mark 26, drawing assistance guide mark 27, first ball placement point 281, second ball placement point 282, and follow-through guide mark 29 may be set to the same color or different colors. As an option, the mark area 2 can be painted on the sphere 1 with a pigment, pasted on the sphere 1 with paper, or printed on the sphere 1 with a printer.

[0095] The methods of painting with pigment, pasting on paper and printing can increase the speed and accuracy with which the marking area 2 is placed on the sphere 1, thereby increasing the production efficiency of the soccer ball 100. Referring to FIG. 6, optional usage of soccer ball 100 includes ball placement, run-up, kicking, and follow-through motions.

[0096] Ball placement: Using the ball initial direction guideline 21 and the ball placement line 22 as visual references, the ball initial direction guideline 21 is visually aligned "perpendicular" to the ground, and the ball placement line 22 is visually aligned "perpendicular" to the ground. Then, rotate the sphere 1 to align the ball initial direction guideline 21 with the set target position. Run-up preparation: Depending on the run-up angle to be practiced, the corresponding run-up angle point 251 or run-up guideline 252 is selected, and the user 1000 moves away from the sphere 1 in the direction indicated by the run-up angle point 251 or run-up guideline 252 for a set distance. The user 1000 then visually views the cross section where the run-up angle point 251 and the central axis 232 are located, i.e., the run-up cross section, as a "single straight line" that intersects with the ground. The user 1000 then visually views the run-up guideline 252 as a "single straight line." Then, by moving the body left and right, the user selects an appropriate course that is parallel to the "intersection line between the ground and the run-up cross section" as the final run-up course. For example, referring to FIG. 2, the final run-up course corresponding to the run-up angle point 251a is the first run-up course 251A. Referring to FIG. 2, the first run-up course 251A is parallel to the run-up cross section corresponding to the run-up angle point 251a. Kick: A kicker takes a run-up to the ball 1, aiming at one of the kick reference point 241, the top spin point 242, the first side spin point 243, the second side spin point 244, and the penalty kick guide mark 26 to be practiced, and finally hits the ball 1 at the position aimed at with the kicking foot 1001.

[0097] In the related art, when a user 1000 practices a place kick, the distance between the position of the kicking foot 1001 to contact the ball and the user's 1000 supporting foot 1002 is approximately constant at the moment of kicking in order to form a movement habit and muscle memory. Meanwhile, the position of the user's 1000 kicking foot 1001 to contact the ball (e.g., the metatarsal bone on the instep of the right foot) is relatively fixed for each practice at the position where the sphere 1 touches. The position of the supporting foot 1002 relative to the sphere 1 changes with each practice. If the kicking foot 1001 contacts the ball or the ball to maintain the designated position, the user 1000 must adjust their body posture. This distorts their movement, preventing them from naturally making strong contact with the ball, degrading the ball's initial direction quality and reducing the training effect. Therefore, it is necessary to maintain a constant position of the user's 1000 supporting foot 1002 relative to the sphere 1 with each practice.

[0098] 6, one embodiment of the present disclosure provides a training component 200. The training component 200 includes a supporting foot marker 210 and a soccer ball 100 described in the above embodiment. The supporting foot marker 210 includes a lateral positioning segment 2102, a first mark portion 2103, and a second mark portion 2104. The lateral positioning segment 2102 is arranged so that it can be deformed when subjected to an external force, and is perpendicular to the cross section on which the guide line 21 of the ball initial direction is located during use. The second mark portion 2104 is located at the end of the lateral positioning segment 2102. The first mark portion 2103 is provided on the lateral positioning segment 2102 and can slide freely on the lateral positioning segment 2102. The distance between the first mark portion 2103 and the second mark portion 2104 can be adjusted to indicate a predetermined landing point on the ground for the supporting foot 1002 of the user 1000 and to configure the positional relationship between the supporting foot 1002 and the soccer ball 100.

[0099] It is worth noting that the lateral positioning segment 2102 is manufactured using a soft rope material that is not crushed by soccer shoes, so that the lateral positioning segment 2102 will not be crushed by soccer shoes after long-term use. The mathematical "orthographic projection" of soccer ball 100 onto the ground (as if your eyes were directly above soccer ball 100 and you were looking down on soccer ball 100) is a perfect circle, and the orthographic projections of all points on the sphere (including the kick point) are at fixed positions in the orthographic projection of this perfect circular sphere 1 onto the ground, and the orthographic positional relationship between all points on the sphere (for example, kick reference points 241b and 241a) is constant on the ground as well. Referring to Figure 6, each structure shown in Figure 6 is a diagram of the orthographic projection corresponding to each structure.

[0100] The actual kick point is at a fixed height from the ground directly above the "kick point orthogonal projection" of the ground, so the positional relationship between the actual kick point and the "kick point orthogonal projection" of the ground is constant. By adjusting the two-dimensional positional relationship between the first mark portion 2103 on the ground (which indicates the landing point of the supporting foot 1002) and the orthogonal projection of a specific kick point onto the ground, the positional relationship between the landing point of the supporting foot 1002 and the actual kick point can be adjusted.

[0101] First, the supporting foot marker 210 is placed at an approximate position next to the penalty mark on the ground, with the lateral positioning segment 2102 perpendicular to the ball initial direction course, and then held in place. After "accurately placing the ball," the soccer ball is translated left or right to set the distance from the second mark portion 2104 of the supporting foot marker 210 to the cross section where the guide line 21 of the ball initial direction is located to the length of the radius of the sphere 1, and then held in place. Furthermore, by sliding the first mark portion 2103 on the lateral positioning segment 2102, the lateral distance of the first mark portion 2103 to the cross section where the guide line 21 of the ball initial direction is located is adjusted. Finally, by moving the soccer ball 100 forward or backward in translation around the cross section where the guide line 21 in the ball initial direction is located as the central axis, the position where the lateral positioning segment 2102 is projected onto the ground relative to the kick point set 24 is determined, the positional relationship between the landing point of the supporting foot 1002 and the actual kick point is adjusted, and the "correct standing position" of the supporting foot 1002 of the user 1000 is instructed, allowing the user 1000 to repeatedly practice the standing position of the supporting foot 1002 and improving the training effect. As an example, the first mark portion 2103 is intended to indicate the standing position of the center of the inner sole or the inner ankle of the supporting foot 1002 of the user 1000.

[0102] 6, as an option, the supporting foot marker 210 further includes a length reference segment 2101. The length reference segment 2101 is connected to the lateral positioning segment 2102 and to the position of the second mark portion 2104. The length of the length reference segment 2101 is used as a dimensional reference when adjusting the distance between the first mark portion 2103 and the second mark portion 2104, or as a reference for the perpendicular distance to the orthogonal projection of the kick point set 24 in the extension direction of the lateral positioning segment 2102. By folding the length reference segment 2101 parallel to the horizontal positioning segment 2102 and overlapping them, the position of the first mark portion 2103 can be adjusted by sliding it based on the length of the length reference segment 2101, thereby quickly adjusting the position of the first mark portion 2103 relative to the second mark portion 2104 and the actual kick point, which helps to improve training efficiency.

[0103] 6, optionally, the length reference segment 2101 is configured to be deformable when subjected to an external force, and in use is parallel to the plane on which the ball initial direction guide line 21 is located. When the supporting foot marker 210 is used, the length of the length reference segment 2101 is also used as a reference for the perpendicular distance between the extension direction of the lateral positioning segment 2102 and the orthogonal projection of the kick point set 24, and the relative positions of the lateral positioning segment 2102 and the kick point are determined in the extension direction of the lateral positioning segment 2102. Optionally, the length reference segment 2101 and the lateral positioning segment 2102 are bendable rope-like structures.

[0104] 6, optionally, the length reference segment 2101 and the lateral positioning segment 2102 are integrally molded. The integrally molded length reference segment 2101 and lateral positioning segment 2102 are easy to carry and place, and the connection between the length reference segment 2101 and the lateral positioning segment 2102 is stable, reducing the likelihood of them becoming detached during training by the user 1000 and improving their lifespan. Optionally, the length reference segment 2101 and the lateral positioning segment 2102 are separate structures, each formed from a single rope or a combination of multiple ropes. Referring to FIG. 6, optionally, the length reference segment 2101 and the lateral positioning segment 2102 form a knot in the rope.

[0105] Tying the knot makes it easier to set the length of the length reference segment 2101 (e.g., to the diameter of a standard No. 4 ball or a standard No. 5 ball) and adjust its orthogonal projection relative to the kick point set 24 as needed. 6, optionally, the first mark portion 2103 is fastened to the lateral positioning segment 2102 via another short rope, such as by a knot. Optionally, the first mark portion 2103 may be formed by the lateral positioning segment 2102 itself tying a knot.

[0106] As an example, if a standard No. 5 ball with a circumference of 69 cm is used as the sphere 1, the vertical distance L1 between the extension line of the lateral positioning segment 2102 and the orthogonal projection of the kick point set 24 (in Figure 6, the vertical distance between the extension line of the lateral positioning segment 2102 and the orthogonal projection of the kick reference point 241a is shown) is approximately 2.2 cm (approximately 10% of the diameter of the sphere 1), the distance L2 between the first mark portion 2103 and the second mark portion 2104 is approximately 15.4 cm (approximately 70% of the diameter of the sphere 1), and the position of the first mark portion 2103 can be satisfied as follows: the vertical distance L1 between the extension line of the lateral positioning segment 2102 and the kick point set 24 is approximately 2.2 cm, and the lateral distance between the first mark portion 2103 and the kick point set 24 is approximately 26.4 cm in the direction perpendicular to the cross section on which the guide line 21 in the ball initial direction is located.

[0107] Referring to Figure 6, optional methods for using the training component 200 include rope placement, ball placement, moving the ball, taking a run-up, landing with the supporting foot, and kicking. Rope placement: First, place the supporting foot marker 210 in an approximate position next to the penalty mark on the ground, and then place the orientations of the lateral positioning segment 2102 and the length reference segment 2101. Align the lateral positioning segment 2102 perpendicular to the ball initial direction course and then maintain it, and align the length reference segment 2101 parallel to the ball initial direction and then maintain it. Adjust the position of the first mark portion 2103 to adjust the distance L2 of the first mark portion 2103 relative to the second mark portion 2104.

[0108] Ball placement: The guideline 21 for the ball initial direction is set "perpendicular" to the ground, and the ball placement line 22 is set "perpendicular" to the ground, and the soccer ball is rotated on the spot to align the guideline 21 for the ball initial direction with the direction of the kick target set in advance.

[0109] Moving the ball: By translating the soccer ball 100 left or right, the vertical distance from the second mark portion 2104 of the supporting foot marker 210 on the cross section where the ball initial direction guide line 21 is located is set to the length of the radius of the sphere 1, and then maintained (the length reference segment 2101 at this time refers to the circumference of the sphere 1 and the orthogonal projection onto the ground, maintaining a "tangential" relationship). Finally, by translating the sphere 1 forward or backward in the direction indicated by the ball initial direction guide line 21, the position where the extension line of the lateral positioning segment 2102 is orthogonally projected onto the ground relative to the kick point set 24 is determined, adjusting the positional relationship between the landing point of the supporting foot 1002 and the actual kick point, and instructing the "correct standing position" of the supporting foot 1002 of the user 1000 allows the user 1000 to repeatedly practice the standing position of the supporting foot 1002, improving the training effect.

[0110] Run-up: Depending on the run-up angle to be practiced, the corresponding run-up angle point 251 or run-up guideline 252 is selected, and the user 1000 moves away from the sphere 1 in the direction indicated by the run-up angle point 251 or run-up guideline 252 for a set distance. In the user's visual field, the cross section where the run-up angle point 251 and the central axis 232 are located, i.e., the run-up cross section, is a "single straight line" that intersects with the ground. The user 1000's visual field also includes the run-up guideline 252. Then, by moving the body left and right, the user selects an applicable course that is parallel to the "intersection line between the ground and the run-up cross section" as the final run-up course. For example, referring to Figure 2, the final run-up course corresponding to the run-up angle point 251a is the first run-up course 251A. In Figure 2, the first run-up course 251A is parallel to the run-up cross section corresponding to the run-up angle point 251a.

[0111] Landing of supporting foot: After the run-up, a predetermined position on the sole of the supporting foot 1002 (for example, the center of the inner sole or the inner position of the ankle of the supporting foot 1002 of the user 1000) is placed on the position on the ground where the first mark portion 2103 of the supporting foot marker 210 is provided. Kick: Aim at one of the kick reference point 241, top spin point 242, first side spin point 243, second side spin point 244 and penalty kick guide mark 26 to be practiced, and finally hit the position on the sphere 1 aimed at with the kicking foot 1001. In this application, each type of "line" in the mark area 2 is a linear area with a certain width, and each type of "point" is a dot-like area with a certain diameter.

[0112] Furthermore, those skilled in the art will recognize that the above embodiments are merely for illustrating the present application, and are not intended to limit the present application, and that any appropriate changes or modifications made to the above embodiments within the essential spirit of the present application are within the disclosure scope of the present application.

[0113] Industrial Practicality As described above, the present disclosure provides a soccer ball and training components to guide users. When a user uses the soccer ball of the present disclosure to perform place kick training, the user can quickly complete ball placement and quickly aim the ball at the kick target by using the ball initial direction guidelines and ball placement lines. This allows the user to quickly complete "accurate ball placement" and accurately fix the position of each kick reference point relative to the ground, the ball, and the predetermined kick target. At this time, the accurate run-up and the ball's flight direction and trajectory after the kick are also fixed. Based on the ball initial direction effect after the kick, the user can determine whether their complete set of movements accurately and effectively hit the kick contact point on the desired ball. They can also refine and solidify each element of the movement, such as the run-up angle and trajectory, the landing of the supporting foot, kick posture, and follow-through movement. After becoming proficient in effective movements, they can form movement habits and muscle memory. Therefore, the details of the skilled movements described above can be applied even when kicking with a soccer ball without a marking area, consistently achieving the specific kick effect they have trained. Therefore, by practicing using a soccer ball equipped with the above-described marking area, the efficiency and effectiveness of place kick training can be improved. [Explanation of symbols]

[0114] 100 soccer balls 1 sphere 2 Mark Area 21 Ball initial direction guideline 22 Ball placement line 231 Horizontal midline cross section 232 Central axis 24 kick point set 241 Kick Reference Point 241a First kick reference point 241b Second kick reference point 241c Third kick reference point 242 Topspin Points 243 First Side Spin Point 243a First Side Spin Point a 243b First Side Spin Point b 244 Second Side Spin Point 25 Run-up guide mark 251 Run-up angle point 251a First approach angle point 251b Second approach angle point 251A First Approach Course 251B Second approach course 252 Run-up Guidelines 26 Penalty kick guide mark 261 First Penalty Kick Angle Point 262 Second Penalty Kick Angle Point 263 Third Penalty Kick Angle Point 264 Fourth Penalty Kick Angle Point 265 First Simulation Finish Line 266 Second Simulation Finish Line 267 Third Simulation Finish Line 268 Fourth Simulation Finish Line 27 Drawing assistance guide marks 271 Kick drawing auxiliary line 272 Drawing auxiliary kick reference point 281 First ball placement point 282 Second ball placement point 29 Follow-through guide mark 291 Follow-Through Angle Point 291a First Follow-Through Angle Point 291b Second Follow-Through Angle Point 29a First Follow-Through Guideline 29b Second Follow-Through Guideline 292a First follow-through trajectory 292b Second follow-through trajectory 200 Training Components 210 Supporting Foot Marker 2101 Length Reference Segment 2102 Lateral Positioning Segment 2103 First Mark Section 2104 Second Mark Department 1000 users 1001 Kicking Foot 1002 Supporting foot

Claims

1. a ball initial direction guideline and a mark area provided on the surface of the sphere, the mark area including a ball initial direction guideline, a ball placement line, and a kick point set provided on the surface of the sphere, the ball initial direction guideline and the ball placement line are located on different cross sections, each cross section passing through the center of the sphere, the kick point set includes a plurality of kick reference points distributed at intervals, the cross section on which the distribution paths of the plurality of kick reference points are located overlaps with the cross section on which the ball initial direction guideline is located, and a horizontal midline cross section is defined as the cross section passing through the center of the sphere, when the cross section on which the ball initial direction guideline is located and the cross section on which the ball placement line is located are both perpendicular to the ground, the horizontal midline cross section is parallel to the ground, and the plurality of kick reference points are distributed downward from the horizontal midline cross section, a central axis is defined as the intersection of a cross section on which the guideline for the ball initial direction is located and a cross section on which the ball placing line is located; the mark area further includes a run-up guide mark, and the run-up guide mark includes a plurality of run-up angle points, and different run-up angle points have different included angles between the cross section on which the central axis is located and the cross section on which the guideline for the ball initial direction is located.

2. 2. The soccer ball of claim 1, wherein the run-up guide mark further includes a plurality of run-up guide lines, each run-up angle point is provided on one of the run-up guide lines, and when a cross section on which the guide line in the ball initial direction is located and a cross section on which the ball placement line is located are both perpendicular to the ground, the cross section on which each of the run-up guide lines is located is perpendicular to the ground.

3. a ball initial direction guideline and a mark area provided on the surface of the sphere, the mark area including a ball initial direction guideline, a ball placement line, and a kick point set provided on the surface of the sphere, the ball initial direction guideline and the ball placement line are located on different cross sections, each cross section passing through the center of the sphere, the kick point set includes a plurality of kick reference points distributed at intervals, the cross section on which the distribution paths of the plurality of kick reference points are located overlaps with the cross section on which the ball initial direction guideline is located, and a horizontal midline cross section is defined as the cross section passing through the center of the sphere, when the cross section on which the ball initial direction guideline is located and the cross section on which the ball placement line is located are both perpendicular to the ground, the horizontal midline cross section is parallel to the ground, and the plurality of kick reference points are distributed downward from the horizontal midline cross section, a central axis is defined as the intersection of a cross section on which the ball initial direction guideline is located and a cross section on which the ball placement line is located; the mark area further includes a follow-through guide mark, the follow-through guide mark includes a plurality of follow-through angle points and a plurality of follow-through guidelines, different follow-through angle points have different included angles between the cross section on which the central axis is located and the cross section on which the ball initial direction guideline is located, each follow-through angle point is provided on one follow-through guideline, and when the cross section on which the ball initial direction guideline is located and the cross section on which the ball placement line is located are both perpendicular to the ground, the cross sections on which each follow-through guideline is located are perpendicular to the ground.

4. 4. The soccer ball according to claim 1, wherein the kick point set further includes a first side spin point, and the first side spin point is distributed at an interval from one of the plurality of kick reference points in a direction perpendicular to a cross section on which the guide line of the ball initial direction is located.

5. 4. The soccer ball according to claim 1, 2 or 3, wherein the kick point set further includes a top spin point, the top spin point is spaced apart from the kick reference point, the top spin point is located on a cross section where the plurality of kick reference points are located, and when the cross section where the ball initial direction guideline is located and the cross section where the ball placement line is located are both perpendicular to the ground, the top spin point is located below one of the plurality of kick reference points.

6. 6. The soccer ball of claim 5, wherein the kick point set further includes a second side spin point, and the second side spin point is spaced apart from the top spin point in a direction perpendicular to a cross section on which the guide line of the ball initial direction is located.

7. 4. The soccer ball according to claim 1, wherein the mark area further includes a drawing assist guide mark, the drawing assist guide mark including a kick drawing assist line and a drawing assist kick reference point, the drawing assist kick reference point being located at an intersection of the kick drawing assist line and the horizontal midline cross section and having a completely blank area near the intersection, the completely blank area being spaced apart from the kick drawing assist line, and when the cross section on which the ball initial direction guide line is located and the cross section on which the ball placing line is located are both perpendicular to the ground, the cross section on which the kick drawing assist line is located is perpendicular to the ground.

8. 4. The soccer ball according to claim 1, 2 or 3, wherein the central axis is defined as the intersection of a cross section on which the guideline in the ball initial direction is located and a cross section on which the ball placement line is located, and the marking area further includes a first ball placement point and a second ball placement point, the first ball placement point and the second ball placement point being located at both ends of the central axis, respectively.

9. 4. The soccer ball according to claim 1, wherein the marked area is formed by painting a pigment on the sphere, by attaching a sticker to the sphere, or by printing on the sphere.

10. a ball initial direction guideline and a mark area provided on the surface of the sphere, the mark area including a ball initial direction guideline, a ball placement line, and a kick point set provided on the surface of the sphere, the ball initial direction guideline and the ball placement line are located on different cross sections, each cross section passing through the center of the sphere, the kick point set includes a plurality of kick reference points distributed at intervals, the cross section on which the distribution paths of the plurality of kick reference points are located overlaps with the cross section on which the ball initial direction guideline is located, and a horizontal midline cross section is defined as the cross section passing through the center of the sphere, when the cross section on which the ball initial direction guideline is located and the cross section on which the ball placement line is located are both perpendicular to the ground, the horizontal midline cross section is parallel to the ground, and the plurality of kick reference points are distributed downward from the horizontal midline cross section, the mark area further includes a penalty kick guide mark, the penalty kick guide mark including a first penalty kick angle point, a second penalty kick angle point, a third penalty kick angle point, and a fourth penalty kick angle point, each of which is used to aim at the four corners of the goal when instructing the user to take a penalty kick, and the area formed by sequentially connecting the first penalty kick angle point, the second penalty kick angle point, the fourth penalty kick angle point, and the third penalty kick angle point instructs the user to aim at a range of kick points within the goal area when instructing the user to take a penalty kick.

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