Swing training aids for swing sports

Abstract

This swing training aid provides a way for the user to experience and perceive the fundamental, proper swing state without mechanically restricting the user's body, enabling them to acquire a proper swing in a free-swinging state. [Solution] This solution comprises a spherical part that contacts the gluteus maximus of the user's buttocks to constantly allow the user to recognize the correct position of their buttocks, an elastic support member that supports the spherical part so that it can swing circumferentially with a predetermined return elasticity to its original position, and a support body that supports the spherical part at a predetermined height position via the elastic support member. By utilizing the swing and rebound elasticity of the spherical part, the spherical part is made to smoothly follow the movement of the body, allowing the user to swing while constantly feeling and perceiving the correct position of their buttocks in a completely free swing state that does not restrict any part of the body, thereby enabling unprecedentedly effective improvement.

Description

Technical Field

[0001] The invention of this application relates to the configuration of a swing training tool for swing sports that require swinging.

Background Art

[0002] Among sports, there are sports such as golf, baseball, and tennis that require swinging with tools such as clubs, bats, and rackets. In the case of such sports that require swinging (hereinafter referred to as swing sports), there is a common and fundamental correct way of swinging. Without mastering this fundamental correct way of swinging (the way of hitting the ball = form), it is difficult to improve.

[0003] For example, taking golf as an example, its basic swing form is composed of the following six swing motions. (1) Address (stance when hitting the ball) (2) Backswing (motion of swinging the club backward) (3) Downswing (motion of swinging the club head down toward the ball) (4) Impact (momentary motion of hitting the ball with the club head) [[ID=2S]](5) Follow-through (motion after hitting the ball) (6) Finish (motion state of being stationary after finishing swinging the club) (1) The address is the motion of holding the club before swinging, but it is the extremely important first motion that affects the hitting point and the direction of the ball. Pay attention to the position of the ball, stance width, center of gravity, grip, position of the hands, forward tilt posture, the three lines of the toes, knees, and shoulders, and the position of hanging both arms. The trick is to bend the knees slightly and tilt the upper body slightly in the direction of the ball to lower the center of gravity. Specifically, it is a state of taking a forward tilt posture with the image of tilting the pelvis from the hip joint from a state of standing upright with the back straight, but it is important to keep the back straight.

[0004] (2) The backswing is the motion of swinging the club backward, and whether this motion is done correctly greatly affects the club's trajectory during the swing. During the take-back, keep the clubhead parallel to the ground and pull it back along with the rotation of the pelvis while maintaining the forward lean posture from the address position described above. At this time, maintain the triangle formed by both shoulders and the grip until you reach the business zone (the range until the shaft is parallel to the ground). Then, from the business zone to the top of the swing, be careful not to let your body axis drift in the direction of the swing. What is important during this time is not to shift your center of gravity to the right, but rather to bring the pelvis into the take-back with the image of twisting it around the right hip joint as the axis.

[0005] In the downswing (3), while paying attention to the direction of the clubface, swing the club down in an arc, accelerating moderately from the peak of the backswing (inside-in). Throughout this, the position of the pelvis (height and horizontal position in all directions) should remain unchanged, and it is desirable to swing the club down with the image of twisting the pelvis.

[0006] (4) At impact, swing down so that your hands are in the same position as at address. Keep your eyes on the ball from the backswing to this impact. Maintain the same pelvic position as at address. This will result in an impact with a precise arc.

[0007] In the follow-through of (5), rotate your hips firmly and swing through with both arms holding the club straight. In this case, do not lift your head immediately after impact, but maintain your forward lean and keep your eyes on where the ball was while swinging through. In this follow-through as well, within the business zone, a dynamic follow-through is achieved by keeping both arms straight while maintaining the triangle described above. In this case as well, regarding the axis of the body, just like in the backswing described above, do not let your body move in the direction of the swing (make sure your body does not move in the direction of the swing from a straight line drawn vertically upward from the outside of your left foot), and swing through with the image of rotating your hips backward. This stabilizes the direction of the shot.

[0008] In the finish of (6), the club is swung with the sole of the right foot visible, the body's center of gravity is entirely on the left foot, and the body is facing straight towards the target, at which point it comes to a stop. Then, the gaze is directed in the direction the ball is flying.

[0009] Mastering each of these forms (1) through (6) will improve your score and allow you to enjoy your rounds with confidence.

[0010] However, the swing motion, which involves maintaining the pelvic position as it was at address (1) throughout each of these actions (1) to (6), swinging the club up and down with the image of twisting the pelvis during the backswing (2) and downswing (3), and rotating the hips firmly during the follow-through (5), extending both arms holding the club straight and swinging through with a large motion, and not letting the body move in the direction of the swing as in the backswing (2), cannot be easily mastered by simply repeating practice swings. This is because, in simple practice swings, one is merely repeating the swing based only on an image (imagination) in one's mind, without accurately recognizing (feeling, perceiving) the actual position of the pelvis (hips) during the swing.

[0011] Recently, a golf swing training aid has been proposed that, for example, has a support column whose height can be adjusted vertically, and on top of this column is a saddle that can be rotated arbitrarily horizontally. By having the trainee place their groin against the saddle and perform the actions described in (1) to (6) above, the actual position of the pelvis can be mechanically fixed while practicing swings (see Patent Document 1).

[0012] With this swing training aid, swing practice is performed in roughly the following manner.

[0013] In other words, the practitioner first stands with the club in hand, straddling the saddle, and assumes the address position with their groin resting on the saddle. At this time, the height of the saddle should be set appropriately in advance according to the practitioner's physique so that they can assume an address position with their knees slightly bent and their upper body slightly tilted towards the ball to lower their center of gravity. Then, as the practitioner moves into the backswing motion, the upper support supporting the saddle rotates at a predetermined angle relative to the lower support due to the weight transfer, and further rotation of the saddle at a predetermined angle relative to the upper support as the hips twist, until the upper support rotates 45 degrees relative to the lower support when the backswing reaches the top.

[0014] Next, during the downswing, the saddle returns to its original position relative to the upper support, and the upper support also returns to its normal position relative to the lower support. At impact, only the upper support is rotated by a predetermined angle relative to the lower support. Furthermore, when moving the hips parallel to the finish direction while maintaining the axis of the hips from the latter half of impact to the finish, a sliding mechanism is provided, which allows the upper support to slide relative to the lower support, thereby moving the hips towards the finish direction.

[0015] Therefore, with the same configuration, it is possible to perform swing movements corresponding to each of the forms (1) to (6) described above.

[0016] However, in the case of this swing training aid, there is a large mechanical structure (mechanism) consisting of a saddle, upper support, sliding mechanism, lower support, legs, etc., and the groin area (waist) is constantly mechanically restrained and guided through the saddle, upper support, lower support, and sliding mechanism of this structure to perform the swing, and a series of swings can only be achieved when all of these parts work together mechanically.

[0017] Therefore, with a swing training aid of the same configuration, even if one can perform a certain level of swing while practicing with the aid, it is difficult to perform the same swing once the aid is removed. In other words, it does not help the body itself to feel and perceive the proper swing, so the mastery effect is low.

[0018] Furthermore, even during practice, the entire body, including the groin area, feels highly restricted, making it difficult to perform free, almost unrestricted swing practice. Attempting a full swing improperly could lead to injury. Therefore, practicing hitting actual balls is difficult, and beneficial practice effects cannot be expected. Additionally, the device's configuration is complex, the product is expensive, and it is inconvenient to carry around.

[0019] On the other hand, in contrast to this, an extremely simple swing training device has also been proposed, which has a stick structure consisting of a small-diameter seat portion positioned at the center of the user's buttocks, a support column extending downward from the center of the seat portion, and legs at the lower end of the support column (see Patent Document 2).

[0020] In this swing training aid, the aid is placed vertically from the ground with the seat facing upwards. The user lightly rests the center of their buttocks on the seat, bends their knees, lowers their hips, and assumes a forward-leaning posture. In this position, the user performs various swing movements (as described in (1) to (6) above), including the address position, backswing from the address position, downswing from the backswing, impact from the downswing, follow-through from impact, and finish from the follow-through. In each of these movements, the user holds the stick-shaped training aid between their buttocks and the ground to prevent it from falling over. In this position, the user rotates their hips around their navel and anus (the axis of the support column) to twist their upper body. If there is proper weight transfer, the training aid (support column) will tilt from one side to the other without falling over. On the other hand, if there is no proper weight transfer, the training aid (support column) will fall over. Therefore, it is possible to determine whether or not proper weight transfer is being performed during the swing.

[0021] Furthermore, with this training aid, it is possible to swing and shift weight relatively freely while maintaining balance in the knees, hips, and upper body. Therefore, there is no mechanical constraint like with the training aid in Patent Document 1, and it is possible to practice by letting the body itself remember the movements without relying on mechanical guidance. Also, it is relatively less likely to cause injury even when swinging at full power. Moreover, since it is nothing more than a stick structure with a small diameter seat, support column, and legs, its construction is extremely simple and the manufacturing cost is low. [Prior art documents] [Patent Documents]

[0022] [Patent Document 1] Utility Model Application No. 5-19090 (Utility Model Application No. 01-124478) [Patent Document 2] Japanese Patent Publication No. 2022-26590 (Patent No. 7257690) [Overview of the project] [Problems that the invention aims to solve]

[0023] However, in the case of the training tool of Patent Document 2, it is very difficult to maintain a state where the stick-shaped training tool is sandwiched between the buttocks and the ground and does not fall. Before getting used to it, it is almost impossible to perform proper weight transfer, and in fact, the training tool falls down with each swing. Also, even if one has reached a certain level of proficiency, the legs will slip and one will fall down. Therefore, training requires great perseverance and cannot be said to be practical.

[0024] Furthermore, even if one can perform a full swing, in order to prevent the training tool from falling, one has to apply a certain amount of weight to the sitting surface anyway, and half of one's consciousness is taken up by that. Therefore, it is impossible to perform a free swing that is completely focused only on the swing. As a result, there is naturally a limit to the improvement of swing techniques.

[0025] Also, in the case of this training tool, even if there is a sitting surface, since the position of the sitting surface ultimately has to be maintained by the trainee himself / herself, the sitting surface does not indicate the proper hip position in each swing. This is the same in the case of maintaining the forward tilt angle and weight transfer during the forward tilt posture. In short, this training tool is nothing more than a very approximate one where it is simply said that a proper swing and weight transfer are being made as long as the training tool does not fall down.

[0026] The invention of this application was made to solve such problems, and without mechanically restraining the trainee's body, it allows the trainee to physically experience and perceive the basic proper swing state, and aims to provide a swing training tool for swing sports that enables the trainee to acquire the proper swing form in a completely free swing state.

Means for Solving the Problems

[0027] The invention of this application is configured with the following means for solving the problems in order to solve the above problems.

[0028] (1) Means for Solving the Problems of the Invention of Claim 1 The invention of claim 1 provides a solution comprising: a spherical part that contacts the gluteus maximus of the practitioner's buttocks to constantly allow the practitioner to recognize the correct position of their buttocks; an elastic support member that supports the spherical part so that it can swing circumferentially with a predetermined return elasticity to its original position; and a support body that supports the spherical part at a predetermined height position via the elastic support member. The invention utilizes the swing and rebound elasticity of the spherical part to allow the spherical part to smoothly follow the movement of the body, enabling the practitioner to practice swinging while constantly feeling and perceiving the correct position of their buttocks in a completely free swing state that does not restrict any part of the body.

[0029] In the solution to the problem of this invention, the device consists of a spherical part that contacts the gluteus maximus of the practitioner's buttocks to constantly allow the practitioner to recognize the correct position of their buttocks, an elastic support member that supports the spherical part so that it can swing in the circumferential direction with a predetermined return elasticity to its original position, and a support body that supports the spherical part at a predetermined height position via the elastic support member. By utilizing the swing and rebound elasticity of the spherical part, the spherical part is made to smoothly follow the movement of the body, allowing the practitioner to practice swinging while constantly feeling and perceiving the correct position of their buttocks in a completely free swing state that does not restrict any part of the body at all.

[0030] In other words, in the case of this swing training aid, when a user presses the left and right gluteus maximus muscles of their buttocks against a spherical part that is supported to swing freely in the circumferential direction with a predetermined spring pressure, the spherical part presses against the left and right gluteus maximus muscles with a predetermined rebound stress corresponding to the spring pressure of the elastic support member. The tactile and pressure nerves in the skin on the surface of the left and right gluteus maximus muscles sense the contact of the spherical part with the left and right gluteus maximus muscles and the pressure with the predetermined rebound stress, respectively, and the brain is reliably notified through the nervous system that the spherical part is in contact with the left and right gluteus maximus muscles with a predetermined pressure and that the position of contact has changed. This contact of the spherical part with the left and right gluteus maximus muscles and the pressure with the predetermined rebound stress only needs to be perceptible to both nerves in the skin, and does not require strong pressure. Therefore, during the swing, although the spherical part is in contact with the left and right gluteus maximus muscles of the buttocks, the spherical part does not mechanically restrict the movement of the left and right gluteus maximus muscles, hip joints, or pelvis in any way. However, it only allows the skin's nerves to sense its presence.

[0031] Therefore, the user can swing fully and freely, just as they would in a simple practice swing. Furthermore, they won't get injured like with conventional training aids, even when swinging fully. Consequently, they can actually hit the ball with full force.

[0032] Moreover, despite this, the gluteus maximus muscles on both sides of the buttocks reliably sense the position of the spherical part during the swing, and the cerebrum accurately recognizes the position of its own buttocks and gluteus maximus muscles based on the position of the spherical part. Therefore, with this training aid, one can reliably acquire the basic swing form through practice swings alone, without being guided by any mechanical means, and the training effect is extremely high.

[0033] Furthermore, due to its shape and elasticity, the aforementioned spherical part follows the movement of the gluteus maximus muscles on both sides during the swing, allowing the brain to appropriately recognize the actual movement of these gluteus maximus muscles. The gluteus maximus is the largest muscle in the buttocks and is located on the surface of the buttocks. It works in conjunction with the hamstrings (biceps femoris, etc.) on the back of the thigh to contribute to movements such as hip extension, external rotation, adduction, and abduction. The skin covering the gluteus maximus contains nerves that control touch (Merkel disc) and nerves that control pressure (Pacinian corpuscles). Therefore, if the position of the hips or forward lean at address is not appropriate, it can be easily detected through the feel and position of the contact of the spherical part, and autonomous correction can be made during the swing. As a result, improvement is rapid.

[0034] In order to effectively realize this function, it is preferable to address the device by bringing the spherical part into contact with the central part of the gluteal cleft (anal area) formed between the left and right gluteus maximus muscles.

[0035] (2) Means for solving the problem of the invention of claim 2 The means for solving the problem of the invention of claim 2 is characterized in that, in the configuration of the means for solving the problem of the invention of claim 1, the spherical part is made of a ball member in which air at a predetermined pressure is sealed inside.

[0036] In this configuration, the entire spherical part is soft, highly elastic, and freely deformable, making it very easy to follow the movements of the gluteus maximus on both sides during a swing, and allowing for more effective recognition of movements such as hip rotation.

[0037] (3) Means for solving the problem of the invention of claim 3 The means for solving the problem of the invention of claim 3 is characterized in that, in the configuration of the means for solving the problem of the invention of claim 1 or 2, a predetermined protrusion is provided on the surface of the spherical part to easily sense the contact state with the gluteus maximus muscle of the buttocks.

[0038] In this configuration, the spherical part, which indirectly contacts the skin on the surface of the gluteus maximus muscle of the buttocks through the fabric of clothing such as trousers, becomes more sensitive to touch and pressure sensations from the skin.

[0039] (4) Means for solving the problem of the invention of claim 4 The means for solving the problem of the invention of claim 4 is the above claim 1 or 2 In the configuration of the means for solving the problem of the invention, the elastic support member is characterized in that it is supported on the support body via a predetermined height adjustment member.

[0040] The height and leg length of the practitioners vary. Therefore, the height of the hips and the position of the buttocks when addressing the ball will also differ for each individual. Accordingly, the elastic support member that supports the spherical part is supported by the main support body via a predetermined height adjustment member.

[0041] This configuration allows for the appropriate position of the spherical part to be set at all times, depending on the physique of the person practicing.

[0042] (5) Means for solving the problem of the invention of claim 5 The means for solving the problem of the invention of claim 5 is characterized in that, in the configuration of the means for solving the problem of the invention of claim 4, the upper part of the height adjustment member is bent in a predetermined forward-leaning direction to correspond to the forward-leaning posture during the swing.

[0043] With this configuration, the spherical part and the elastic member supporting the spherical part extend in a straight line at a predetermined angle in response to the forward lean of the user during the swing. The user can then adopt a forward lean using this forward lean line as a reference, thereby achieving an accurate forward lean.

[0044] Furthermore, the center of the spherical part extends towards the anus in the middle of the gluteal fissure between the two gluteus maximus muscles, allowing for a more appropriate response. Also, during the swing, the spherical part will be able to follow the displacement of the two gluteus maximus muscles more freely. [Effects of the Invention]

[0045] As a result of the above, the swing training device for swing sports of this invention makes it possible to obtain a far more effective basic form mastery effect in swing training for swing sports that require mastering basic swing form, such as golf, baseball, and tennis, without causing the problems described in the aforementioned Patent Documents 1 and 2. [Brief explanation of the drawing]

[0046] [Figure 1] This is a front view showing the configuration of a swing training aid for swing sports (hereinafter simply referred to as a swing training aid) according to an embodiment of the invention of this application. [Figure 2] This is a top view showing the configuration of the swing training aid. [Figure 3] This is a top view showing the rotational movement of the swing training aid body relative to the training aid body support means. [Figure 4] The spherical part of the swing training aid corresponds to an anatomical diagram showing the structure of the gluteus maximus muscle in the posterior lateral gluteal region of trainee (human body) A. [Figure 5] This is a side view showing the address position when practicing a golf swing using the swing training aid. [Figure 6] This is a side view showing the start of the take-back motion, transitioning from the address position to the backswing and beginning to swing the club backward. [Figure 7] This is a side view showing the movement during the take-back phase of the backswing. [Figure 8] This is a side view showing the movement after the take-back phase of the backswing. [Figure 9] This is a top view showing the movement after the take-back phase of the backswing. [Figure 10] This is a side view showing the movement of starting the downswing from the position after the take-back has been completed during the backswing. [Figure 11] This is a side view showing the impact phase following the downward swing of the club. [Figure 12] This is a side view showing the transition from impact to follow-through. [Figure 13] This is a side view showing the follow-through motion after impact. [Figure 14] This is a side view showing the finish motion after the follow-through. [Figure 15] This is a front view similar to Figure 1, showing the configuration of the swing training aid body of the modified example 3 of the above embodiment. [Figure 16] This is a front view similar to Figure 1, showing the configuration of the swing training aid body of a modified example 5 of the above embodiment. [Modes for carrying out the invention]

[0047] The following will first describe in detail the configuration of a swing training device for swing sports according to an embodiment of the invention of this application, referring to Figures 1 to 3. Next, the part of the human body to which the swing training device is applied will be described with reference to Figure 4. Furthermore, the method of practicing a swing using the swing training device will be described in detail using golf as an example, with reference to Figures 5 to 14.

[0048] First, Figures 1 to 3 show the configuration of a swing training device according to an embodiment of the invention of this application. The swing training device according to this embodiment is configured as a swing training device (hereinafter simply referred to as a training device) suitable for practicing golf swings, as an example.

[0049] As shown in Figure 1 (front view) and Figure 2 (top view), for example, the training device consists of a spherical part 1, an elastic support member 2 of a predetermined length that supports the spherical part 1 so that it can swing with a return elasticity of a predetermined level or higher, a height adjustment member 3 of a predetermined length that supports the height of the spherical part 1 at a predetermined height via the elastic support member 2, a support body 4 of a predetermined length that fits and supports the height adjustment member 3 so that it can slide up and down, a height adjustment member fixing means 5 that fixes the height adjustment member 3 fitted into the support body 4 at a predetermined height position, a support plate 6 with a predetermined diameter larger than the support body 4 that supports the support body 4 in a stable upright state (vertical upright state) on a predetermined installation surface, and a training device body support means (fixing means) 9 connected to the side of the lower end portion 4b of the support body 4 via a connecting member 7 of a predetermined length that extends horizontally and a rotating member 8 perpendicular to the connecting member 7.

[0050] In this embodiment, the spherical part 1 is composed of an elastic, soft ball member with a predetermined pressure of air sealed inside, enclosed in a rubber outer shell (synthetic rubber outer shell) of a predetermined thickness. In this embodiment, for example, the outer surface of the rubber outer shell is formed as a smooth surface without any irregularities. As shown in Figure 4, for example, when practicing a golf swing (Figures 5 to 14), the spherical part 1 is used in contact with the center of the gluteal fissure groove between the left and right gluteus maximus muscles of the posterior buttocks (posterior buttocks of the pelvis) of the practitioner (human body) A. Therefore, an appropriate outer diameter corresponding to the dimensions of the recessed space in the center of the gluteal fissure groove between the left and right gluteus maximus muscles is adopted.

[0051] As described above, the elastic support member 2 is an elastic shaft member of a predetermined diameter and length that supports the spherical part 1 so that it can swing with a predetermined level of return elasticity (spring characteristics), since the spherical part 1 is used in a state in which it contacts the area between the left and right gluteus maximus muscles on the posterior side of the buttocks of the practitioner with a predetermined contact pressure during swing practice. In this embodiment, the elastic shaft body is molded from an elastic rubber material (natural rubber or synthetic rubber) with a relatively high viscosity solid cylindrical structure. The diameter of the upper end 2a is formed to gradually increase from the lower end 2b, and the convex spherical bottom surface of the spherical part 1 is joined and integrated with the concave spherical upper surface of the upper end 2a, while the upper end 3a of the height adjustment member 3 is inserted and fitted to a predetermined length into the lower end 2b, which has a gradually decreasing diameter, and is connected and fixed to each other.

[0052] The height adjustment member 3 is made of a metal member with a solid cylindrical structure having a predetermined length in the vertical direction, and its lower end 3b is fitted into the height adjustment member insertion hole 4c of the support body 4 described below in a manner that allows it to slide up and down.

[0053] The support body 4 is a cylindrical metal structure of a predetermined length, and a height adjustment member insertion hole 4c is provided inside it for fitting the height adjustment member 3 of the cylindrical structure so that it can slide up and down. The height adjustment member 3 of the cylindrical structure is then fitted and supported as shown in the figure. A height adjustment member fixing means 5 is provided on the side of the upper end portion 4a of the support body 4 for fixing the height adjustment member 3 at a predetermined height position (predetermined insertion position) by pressing and fixing the side of the height adjustment member 3 inserted into the height adjustment member insertion hole 4c.

[0054] The height adjustment member fixing means 5 is screwed inward in a perpendicular direction through a perpendicular screw hole (not shown) provided in the side wall of the upper end portion 4a of the support body 4, and has a screw shaft 5a of a predetermined length that presses its tip-side pressing portion against the shaft portion of the height adjustment member 3 inserted from above, and the screw fixing operation is performed by rotating the screw shaft 5a with a rotation operation part 5b of a predetermined outer diameter.

[0055] Therefore, the height adjustment member 3 is slid up and down so that the spherical part 1 is at a height corresponding to the gluteus maximus of the practitioner's buttocks in a proper address posture (see Figure 5), and once it reaches that position, the height adjustment member fixing means 5 is operated to fix the height adjustment member 3. This sets the spherical part 3 to the appropriate buttock height position (the central position of the gluteal fissure between the left and right gluteus maximus muscles) according to the practitioner's physique when addressing the ball.

[0056] In other words, in this embodiment, the height adjustment member 3, the support body 4 having the height adjustment member insertion hole 4c, and the height adjustment member fixing means 5 cooperate with each other to constitute the height adjustment means for the spherical part 3.

[0057] The training equipment body support means 9, which is connected to the side of the lower end 4b of the support body 4 via a connecting member 7 of a predetermined length extending horizontally and a rotating member 8 perpendicular to the connecting member 7, functions to reliably maintain the training equipment body, consisting of a spherical part 3, an elastic support member 2, a height adjustment member 3, and the support body 4, in a vertical upright position without tipping over, when it is installed on a predetermined installation surface via a support plate 6 at the lower part of the support body 4. At the same time, the training equipment body, consisting of a spherical part 3, an elastic support member 2, a height adjustment member 3, and the support body 4, which is installed on a predetermined installation surface via the support plate 6, is connected so that it can freely rotate 360 ​​degrees around the rotation pivot 8a of the rotating member 8, as shown by the dashed line (rotation trajectory) in Figure 3, allowing the training equipment body to be moved to a desired position outside the training equipment body support means 9 for use. For this reason, once the training equipment body support means 9 is installed in a predetermined appropriate installation position, the training equipment body can then be used in the desired direction and state by moving only the training equipment body in the circumferential direction.

[0058] By the way, in sports that involve swinging motions, such as golf, the basic posture before the swing, or in golf, the address, is extremely important. The address is the action of setting up the club before swinging, but it is an extremely important action that affects the point of impact and the direction of the ball after the swing. In the case of the swing training aid described above, the spherical part 1 helps the trainee to accurately recognize the correct posture in this address motion (degree of knee bending, position of the hips, forward lean angle in the forward lean posture, etc.).

[0059] In the case of the above-described swing training aid, the size (outer diameter) of the spherical part 1 is selected to be suitable for fitting into the recessed space in the center of the gluteal fissure groove (anal area) between the left and right gluteus maximus muscles of the trainee A's buttocks, as shown in Figure 4, for example. Its height is set to a height that allows trainee A to achieve (confirm) an appropriate posture (degree of knee bending, position of hip lowering, forward lean angle in forward leaning posture, etc.) according to their physique. This setting is performed by trainee A themselves using the height adjustment member 3 and the height adjustment member fixing means 5. Based on the presence (presence and perception of the presence) of the spherical part 1 at this height, it is determined whether the address posture (degree of knee bending, position of hip lowering, forward lean angle in forward leaning posture, etc.) is appropriate, and whether the subsequent backswing, downswing, impact, follow-through, finish, and other swing movements are appropriate. All decisions in each of these movements are made by trainee A experiencing and perceiving the contact state and changes in contact position (horizontal and vertical changes) between the spherical part 1 and trainee A's gluteus maximus and hamstrings on the back of the thigh at the above-mentioned set position.

[0060] As is clear from the anatomical diagram of the human body in Figure 4, the gluteus maximus is the largest muscle in the human buttocks, and its surface area is very large, covering the entire area from the lower part of the gluteus medius to the gluteus minimus. On the upper surface of the skin, there are tactile nerves (Merkel disc) and pressure nerves (Pacinian corpuscles). The tactile nerve (Merkel disc) senses the state of contact, that something is touching a specific part of the skin, while the pressure nerve (Pacinian corpuscle) senses the pressure at that point of contact. Therefore, both of these nerves clearly sense the state of contact and changes in the contact position (changes in position and pressure) of the spherical part 1 on the surface of the gluteus maximus, and transmit this information to the cerebrum via the nervous system (neurons) in the bone marrow. The sensitivity of the pressure nerve (Pacinian corpuscle) is particularly high.

[0061] The hamstrings consist of the biceps femoris, semitendinosus, and semimembranosus muscles. When the contact position of sphere 1 shifts downward from the correct position shown in Figure 4 during a swing, sphere 1 will come into contact with the skin portion of the surface of the biceps femoris muscle. This skin portion of the surface of the biceps femoris muscle also contains tactile nerves (Merkel disc) and pressure nerves (Pacinian corpuscles) similar to those described above. Therefore, these two nerves sense the contact state and contact position of sphere 1 on the surface of the biceps femoris muscle, and transmit this information to the cerebrum via the nervous system (neurons) in the bone marrow. This allows the system to recognize that the contact position of sphere 1 has shifted downward from the correct position shown in Figure 4 during a swing.

[0062] In Figure 4, the gluteus maximus on the right side of the page (right side of the human body) has been removed, and the medial gluteus minimus is shown. Also, the hamstring portion below the gluteus maximus is represented by the biceps femoris.

[0063] As described above, in this embodiment of the invention, the device consists of a spherical part 1 that contacts the gluteus maximus muscle of the user's buttocks to constantly allow the user to recognize the position of their own buttocks (pelvis), an elastic support member 2 that supports the spherical part 1 so that it can swing in the circumferential direction with a predetermined return elasticity to its original position, a height adjustment member 3 that supports the spherical part 1 at a predetermined height position via the elastic support member 2, and a support body 4 that supports the spherical part 1 at a desired height via the height adjustment member 3. By utilizing the swing and rebound elasticity of the spherical part 1, the spherical part 1 is made to smoothly follow the movements of the user's body, enabling a completely free swing that does not restrict any part of the user's body, and in this free swing state, the user can always perceive the position of their own buttocks through the tactile and pressure nerves in the skin surface of the gluteus maximus muscle.

[0064] In other words, in the case of this swing training aid, when a user presses the left and right gluteus maximus muscles of their buttocks against the spherical part 1, which is supported to swing freely in the circumferential direction with a predetermined spring pressure, the spherical part 1 presses against the left and right gluteus maximus muscles with a predetermined rebound stress corresponding to the spring pressure of the elastic support member 2. The tactile nerves and pressure nerves in the skin on the surface of the left and right gluteus maximus muscles accurately sense the contact of the spherical part 1 with the left and right gluteus maximus muscles and the pressure applied with the predetermined rebound stress, respectively, and the brain is reliably recognized through the nervous system that the spherical part 1 is in contact with the left and right gluteus maximus muscles at the predetermined position with the predetermined pressure. This contact of the spherical part 1 with the left and right gluteus maximus muscles and the pressure applied with the predetermined rebound stress only needs to be perceptible to both nerves in the skin, and does not require strong pressure. Therefore, during the swing, although the spherical part 1 is in contact with the gluteus maximus muscles on both sides of the buttocks, the spherical part 1 does not mechanically restrict the movement of the gluteus maximus muscles, hip joints, or pelvis in any way. It merely allows the skin to sense its presence through its nerves.

[0065] Therefore, the user can swing fully and freely, just as they would in a simple practice swing. Furthermore, even with such a full swing, there is no risk of injury, unlike with conventional training aids.

[0066] Moreover, despite this, the gluteus maximus muscles on both sides of the buttocks reliably sense the position of the spherical part 1 during the swing, and the cerebrum accurately recognizes the position of its own buttocks and gluteus maximus muscles based on the position of the spherical part 1. Therefore, with this training aid, the basic swing form can be reliably acquired through practice swings alone, without being guided by any mechanical means, and the training effect is extremely high.

[0067] Furthermore, due to its shape and elasticity, the spherical part 1 smoothly follows the movement of the gluteus maximus muscles on both sides during the swing, allowing the brain to appropriately recognize the actual movement of these gluteus maximus muscles. As mentioned above, the gluteus maximus is the largest muscle in the buttocks and is located on the surface of the buttocks. It works together with the hamstrings of the thigh to contribute to movements such as hip extension, external rotation, adduction, and abduction. The skin covering the gluteus maximus contains tactile nerves (Merkel disc) that control touch and pressure nerves (Pacinian corpuscles) that control pressure. Therefore, if the position of the hips (pelvis) or forward lean posture at address is not appropriate, it can be easily detected through differences in contact sensation (differences in contact pressure) and changes in contact location (contact position) with the spherical part 1, and autonomous correction can be made during the swing. As a result, improvement is rapid.

[0068] In order to effectively realize this function, it is preferable to address the spherical part 1 so that it is in contact with the central part of the gluteal fissure (anal area) formed between the left and right gluteus maximus muscles.

[0069] The central part of the gluteal fissure groove (anal area) formed between the left and right gluteus maximus muscles, as shown in Figure 4, is located midway between the left and right gluteus maximus muscles in all directions (up, down, left, and right), and its anal area coincides with the trunk direction of the upper body. Therefore, it is suitable for sensing whether the forward lean posture during address is appropriate.

[0070] Furthermore, in this embodiment, the spherical part 1 is made of a ball structure in which air at a predetermined pressure is sealed inside.

[0071] In this configuration, the entire spherical part 1 is soft, highly elastic, and deformable, making it very easy to follow the horizontal and vertical movements of the gluteus maximus on both sides during a swing, and allowing for more effective recognition of movements such as the rotation of the waist (pelvis).

[0072] Next, we will specifically explain how to practice your golf swing using the swing training aid configured as described above, referring to Figures 5 to 14. In Figures 5 to 14, the symbol A represents the trainee, and the symbol 10 represents the club (wood or iron) held by trainee A.

[0073] (1) When addressing As already mentioned, the address is the action of setting up the club 10 before swinging, and it is an important action that affects the point of impact and the direction of the ball. In this case, as shown in Figure 5, first place the training aid shown in Figure 1 behind you, adjust the ball part 1 to the appropriate height (and position) corresponding to the correct address posture, and then address the ball by bringing the center of the ball part 1 into contact with the center of the gluteal fissure groove (anal area) between the left and right gluteus maximus muscles of the buttocks (position shown in Figure 4). In this case, it is preferable to press the ball part 1 with your buttocks to the extent that you can recognize that the ball part 1 is making firm and even contact with the left and right gluteus maximus muscles.

[0074] In other words, pay attention to the position of the ball, stance width, center of gravity, grip, hand position, forward lean, the three lines of toes, knees, and shoulders, and the position of both arms hanging down, slightly bend your knees, and tilt your upper body slightly towards the ball to lower your center of gravity. Specifically, from an upright position with your back straight, lean forward by tilting your pelvis from your hips, with your knees slightly bent, but your back straight.

[0075] At this time, the spherical part 1 is in contact with the surfaces of the two gluteus maximus muscles on the left and right sides at predetermined positions with predetermined pressure in the central part of the gluteal fissure (anal area), approximately evenly. The tactile and pressure nerves on the surface of each gluteus maximus muscle are appropriately sensing this. However, the sensation is only that the spherical part (ball) 1 is firmly in contact with the surfaces of the two gluteus maximus muscles on the left and right sides of the buttocks at predetermined positions with predetermined pressure (pressed with predetermined rebound stress corresponding to the spring elasticity of the elastic support member 2), and the two gluteus maximus muscles are not being mechanically guided or restrained, so there is no discomfort in the hip joint or buttocks. This is the point that fundamentally differentiates it from the conventional swing training aids described earlier.

[0076] However, this forward-leaning posture, with the knees slightly bent and the upper body tilted slightly towards the ball to lower the center of gravity, allows the brain to autonomously determine whether the spherical part 1 is in even contact with a predetermined pressure at predetermined positions on the surface of the two gluteus maximus muscles in the center of the gluteal fissure (anal area). Therefore, by being aware of the contact state (touch to the body) of the spherical part 1, it becomes possible to perform an appropriate addressing motion.

[0077] (2) During the backswing The backswing is the motion of swinging the club 10 backward, and whether this motion is performed correctly greatly affects the trajectory of the club 10 during the swing. During the take-back, from the address position in Figure 5, as shown in Figures 6, 7, 8, and 9, the club head is kept parallel to the ground and pulled back along with the rotation of the pelvis while maintaining the forward lean posture from the address position. At this time, the triangle formed by both shoulders and the grip should be maintained until the business zone (the range until the shaft is parallel to the ground).

[0078] Furthermore, in the range from the business zone to the top of the backswing, care should be taken to prevent the body's axis (trunk) from shifting in the direction of the swing. The important thing is not to move the body's center of gravity in the direction of the swing, but rather to bring the backswing forward with the image of twisting the pelvis around the right hip joint as the axis, as shown in Figures 6, 7, 8, and 9. This image can be perceived at the start of the backswing shown in Figure 6 and during the progression of the backswing shown in Figure 7, as one of the two gluteus maximus muscles (the left gluteus maximus), which were in contact with the spherical part 1 at a predetermined position with a predetermined pressure at approximately equal intervals at the address position shown in Figure 5, shifts slightly outward from its original contact position, and in the completed backswing state shown in Figures 8 and 9, where the pelvis is twisted around the right hip joint, the pressure of the spherical part 1 on the left gluteus maximus decreases.

[0079] Furthermore, body lift-up and overswing during the backswing can be appropriately perceived based on the contact state and changes in contact position between the two gluteal muscles on the left and right and the ball-shaped part 1. When body lift-up occurs, the contact position of the ball-shaped part 1 shifts downward and changes to the surface side of the biceps femoris muscle of the hamstrings. By perceiving this, it is recognized that body lift-up has occurred.

[0080] These techniques help avoid swaying during the backswing and maintain the correct impact position established at address. As a result, you can develop a stable swing free from mis-hits such as tops, duffs, slices, and hooks.

[0081] (3) During the downswing During the downswing, as shown in Figure 10, while paying attention to the direction of the clubface, swing the club 10 down in an arc, accelerating moderately from the peak of the backswing shown in Figures 8 and 9 (inside-in). Throughout this, the position of the pelvis (height and horizontal position in all directions) should remain unchanged, and it is desirable to swing the club 10 down with the image of twisting the pelvis.

[0082] In this downswing, in addition to understanding the position of the pelvis, it is important to properly understand the straightening of the body and the shift in weight. This can also be properly confirmed by using the contact state and changes in the contact position between the two gluteal muscles on the left and right and the ball-shaped part 1 as a reference. When the body straightens up, the contact position of the ball-shaped part 1 shifts downward and changes to the surface side of the biceps femoris muscle of the hamstrings as described above. By perceiving this, it is recognized that the body has straightened up.

[0083] (4) At impact At impact, swing club 10 down so that your hands are in the same position as at address, as shown in Figure 11. From the backswing shown in Figures 6, 7, 8, and 9, through the downswing shown in Figure 10, and up to the impact, never take your eyes off the ball. At this time, maintain the same position of your pelvis as at address.

[0084] This enables a precise arc-like rotation at impact. Whether or not the pelvic position is maintained from the address position can also be appropriately checked based on the contact state and changes in the contact position between the two gluteal muscles on the left and right and the spherical part 1. The two gluteal muscles on the left and right are located just behind the pelvis, making them suitable for checking the pelvic position.

[0085] (5) During follow-through In the follow-through, as shown in Figures 12 and 13, rotate your hips firmly and swing through with both arms holding the club 10 straight. In this case, as shown in Figures 12 and 13, do not immediately lift your head after impact, but maintain your forward lean and keep your eyes on where the ball was while swinging through.

[0086] In this follow-through, within the business zone, a dynamic follow-through is achieved by keeping the aforementioned triangle and extending both arms straight. In this case as well, regarding the body axis, just like in the backswing described above, do not let your body move in the direction of the swing (prevent your body from moving in the direction of the swing beyond the straight line drawn vertically upward from the outside of your left foot), and swing through with the image of rotating your hips backward. This stabilizes the direction of the shot.

[0087] In this case, the rotation of the hips, the maintenance of the forward-leaning posture, and the maintenance of the body's axis can also be appropriately confirmed based on the contact state and changes in the contact position between the two left and right gluteus maximus parts and the spherical part 1.

[0088] (6) At the finish At the finish, as shown in Figure 14, the club 10 is swung with the sole of the right foot visible, the body's center of gravity is entirely on the left foot, and the body is facing straight towards the target, at which point it comes to a stop. Then, the gaze is directed in the direction the ball is flying.

[0089] The shift in the body's center of gravity (weight transfer) and the rotation of the entire body towards the target direction during this finish can be appropriately confirmed based on the contact state and changes in contact position between the two gluteal muscles on the left and right and the ball-shaped part 1. Furthermore, the shift in the center of gravity (weight transfer) can also be perceived from the tension and contraction of the muscles on one side of the leg.

[0090] As described above, with the swing training device according to the embodiment of the present invention, in practicing the basic golf swing described in (1) to (6) above, the user can autonomously feel (perceive) the contact state between the spherical part 1 and the left and right gluteus maximus muscles of the buttocks in each swing state, as well as the changes in the horizontal and vertical directions of that contact position, through the tactile and pressure nerves in the skin portion on the surface of the left and right gluteus maximus and biceps femoris muscles. This allows the user to acquire the proper use of the torso, the way to shift weight, and the way to utilize the difference in rotation between the legs and hips and the arms and shoulders.

[0091] In particular, being able to swing while sensing (recognizing) that both gluteal muscles on the left and right sides of the buttocks are in firm contact with the ball-shaped part 1 is effective in suppressing body lift, swaying, and overswing during the backswing. It also allows for proper suppression of the body straightening up from the downswing to impact.

[0092] Moreover, in the case of the swing training device according to the embodiment of the present invention, all of these swing training exercises (1) to (6) can be performed in a completely free, full-swing state without any mechanical guiding or restraining means. Therefore, it is possible to practice not only practice swings without a ball, but also swings while actually hitting a ball. Consequently, the improvement effect is extremely large.

[0093] In this way, by correctly mastering each of the basic swing forms described in (1) to (6) above, your score will improve and you will be able to enjoy your rounds with confidence.

[0094] The swing training aid of this embodiment can be used in various practice locations, such as practicing in front of a golf net at home or at a golf driving range. However, when used in combination with a golf simulator that displays a golf course on a screen, which has become increasingly popular recently, it provides a more realistic experience and allows for more effective practice.

[0095] <Variation> The components of the training device body and the training device body support means according to the above embodiment can be modified in various ways, not limited to the configuration described above.

[0096] (Variation 1) In the above embodiment, the spherical part 1, which is the main part of the present invention, is made of a smooth ball structure with air at a predetermined pressure injected inside. However, the structure of this spherical part 1 is not necessarily limited to a ball structure with air at a predetermined pressure injected inside. For example, it can be made of a spherical synthetic resin material molded to be hollow inside. Furthermore, the synthetic resin material can be hard or soft.

[0097] Furthermore, the spherical part 1 described above may be entirely made of sponge material, or the surface of the sponge material may be covered with a smooth resin material. Alternatively, expanded polystyrene material can be used instead of the sponge material.

[0098] These materials are all lightweight and, just like the ball structure described above, can effectively apply a rebound force to the gluteus maximus muscles on both sides of the trainee's buttocks due to the bending deformation of the elastic support member 2. Furthermore, the free deformation of the elastic support member 2 allows it to smoothly follow the rotation of the gluteus maximus muscles on both sides of the buttocks during the swing.

[0099] Furthermore, the spherical shape of the spherical part 1 in the above embodiment is not limited to a perfect sphere; it may also have a slightly elliptical shape.

[0100] (Modification 2) In the above embodiment, the surface of the spherical part 1, which is the main part, is made smooth, and therefore has high sliding properties with the clothing fabric on the surface of the gluteus maximus muscle of the buttocks. However, the surface of this spherical part 1 can be deformed to have a structure similar to the surface of a basketball, with predetermined protrusions evenly distributed throughout.

[0101] By evenly distributing predetermined protrusions across the entire surface of the spherical part 1 of the ball structure, the sensing function of the spherical part 1 on the surface of the thigh muscles on both sides of the buttocks (the sensing function by touch and pressure as described above) is effectively improved, making it easier to recognize the spherical part 1 during a swing. In this case, by making the size of the protrusions themselves small, like the protrusions on the surface of a basketball, and by making the upper end of the protrusions themselves a spherical structure, sufficient sliding ability between the surface of the gluteus maximus of the buttocks and clothing can be ensured. Therefore, there is no effect whatsoever on the degree of freedom of rotation of the gluteus maximus on both sides of the buttocks during a swing, or on the ability to follow that rotation.

[0102] (Variation 3) In the above embodiment, the spherical part 1, an elastic support member 2 of a predetermined length that supports the spherical part 1 so as to be swingable with a return elasticity of a predetermined level or higher, a height adjustment member 3 of a predetermined length that supports the height of the spherical part 1 at a predetermined height via the elastic support member 2, a support body 4 of a predetermined length that fits and supports the height adjustment member 3 so as to be vertically slidable, a height adjustment member fixing means 5 that fixes the height adjustment member 3 fitted into the support body 4 at a predetermined height position, and the support body 4 is set to a stable upright state (vertical upright state) on a predetermined installation surface. The training tool body is made up of a support plate 6 that has a larger diameter than the support body 4, and a training tool body support means 9 is provided on the side of the lower end 4b of the support body 4 of the training tool body, connected via a connecting member 7 of a predetermined length that extends horizontally and a rotating member 8 perpendicular to the connecting member 7. This ensures that the training tool body can be reliably kept upright without falling over, and that the training tool body can be freely placed at any position around the outer circumference (360 degrees) of the training tool body support means 9 (see Figure 3).

[0103] In this configuration, the vertical stability of the training aid body is indeed high, and as long as the training aid body support means 9 is installed in a predetermined location, the training aid body alone can be moved circumferentially as shown in Figure 3, allowing it to be swung in the desired direction at the desired position.

[0104] However, in the case of a configuration that includes the training equipment support means 9 as described above, it is inconvenient to carry around and takes up a large installation space, which is a drawback as it makes it impossible to take it to a golf driving range or similar location for use.

[0105] Therefore, as a configuration to accommodate such use, instead of providing a training equipment body support means 9 connected to the side of the lower end 4b of the support cylinder 4 via a connecting member 7 of a predetermined length extending horizontally and a rotating member 8 perpendicular to the connecting member 7, a configuration is also adopted in which, for example as shown in Figure 15, the diameter of the support plate 6, which is larger in diameter than the support body 4 that supports the support body 4 in a stable upright state (vertical upright state) on a predetermined installation surface, is further increased so that it can be maintained in a stable upright state even without the training equipment body support means 9.

[0106] Furthermore, in this case, if the contact surface of the training equipment body is not horizontal, a configuration is also adopted in which the large-diameter support plate 6 portion is changed to a tripod structure. This modification increases the portability of the training equipment body and expands the flexibility of the installation location (practice location).

[0107] (Modification 4) In the configuration of the above embodiment, the elastic support member 2 that pivotably supports the spherical portion 1 is formed solely from rubber material without a core. In the case of rubber material with high viscosity and rebound elasticity, the rubber material alone can sufficiently achieve the necessary bending elasticity and recovery elasticity, while maintaining durability.

[0108] However, the rubber material can also be deformed to reduce the amount of rubber material needed, make it lighter, and improve its bending elasticity, for example, by creating a bellows structure with a hollow interior.

[0109] Furthermore, the elastic support member 2 portion of the above embodiment can also be modified by inserting a metal core material in the center that is flexible and has higher spring properties than rubber, in order to increase the spring constant of the bending elasticity and increase the pressing force acting on the gluteus maximus muscles on both sides of the buttocks. Doing so would make it easier to sense the presence of the spherical portion 1 in the gluteus maximus muscles on both sides of the buttocks during swing practice.

[0110] (Variation 5) In the above embodiment, the spherical part 1 and the elastic support member 2 of the training tool body are in a vertically supported state, upright from the support body 4. Therefore, the spherical part 1 and the elastic support member 2 are pressed against the gluteus maximus muscles on the left and right sides of the buttocks, causing them to bend and deform in a direction perpendicular to the axis, and only press against the gluteus maximus muscles on the left and right sides of the buttocks with their rebound elasticity. Consequently, the pressing force is inevitably weak. Furthermore, there is a problem in that it is difficult to fit into the gluteal fissure groove in the center between the left and right gluteus maximus muscles as described above.

[0111] Furthermore, when addressing the ball in golf, one adopts a forward-leaning posture by tilting the pelvis towards the ball from the hip joint, starting from an upright position with a straight back. However, when adopting this forward-leaning posture, if the spherical part 1 and elastic support member 2 are in an upright, vertically supported state from the support cylinder 4, the spherical part 1 will come into contact with the hamstring side below the central part of the gluteal fissure groove (anal area) between the left and right gluteus maximus muscles, resulting in a problem where it does not properly contact the left and right gluteus maximus muscles. Therefore, it becomes difficult to properly sense the presence of the spherical part 1. Moreover, the spherical part 1 and elastic support member 2 in the upright state do not play any role in recognizing the forward-leaning posture that runs from the pelvis through the upper body during the address position.

[0112] Therefore, in order to solve this problem, for example as shown in Figure 16, the upper end portion 3a of the height adjustment member 3 that supports the spherical portion 1 and the elastic support member 2 is bent into a "V" shape to correspond to the forward tilt angle of the forward-leaning posture, and the spherical portion 1 and the elastic support member 2 are deformed to extend in the direction of the tilt angle along the upper body from the pelvis of the trainee.

[0113] In this configuration, the installed spherical part 1 and elastic support member 2 extend straight toward the central part of the gluteal fissure (anal area) between the left and right gluteus maximus muscles, making contact with the central part of the gluteal fissure (anal area) between the left and right gluteus maximus muscles of the user with sufficient pressure. Furthermore, the user can appropriately recognize the forward lean angle of their forward lean posture at address, thanks to the spherical part 1 and elastic support member 2 extending linearly toward the central part of the gluteal fissure (anal area) between the left and right gluteus maximus muscles with a predetermined forward lean angle. As a result, the posture and stance at address are effectively improved.

[0114] Furthermore, in this configuration, the horizontal position of the spherical part 1 is separated from the central axis (vertical axis) of the support body 4 and support plate 6 of the training equipment body, so even if the diameter of the support plate 6 is increased as shown in Figure 15, there will be ample space for the user's feet.

[0115] <Regarding the practice use of the swing training aid according to the present invention> The embodiments described above have primarily focused on examples of using the swing training aid for practicing golf swings. However, the swing training aid according to the present invention is by no means limited to practicing golf swings; it can also be applied to practicing baseball and tennis swings, which involve similar swinging motions.

[0116] For example, in baseball, it can be used not only during practice sessions such as swing practice, tee batting, and toss batting, but also during batting practice at a batting cage. In addition, in the case of tennis, it can be used for practicing various swings such as strokes, volleys, serves, and smashes, as well as for similar swing practice using an actual ball. [Explanation of Symbols]

[0117] 1 is the spherical part 2 is an elastic support member 3 is a height adjustment member. 4 is the main support unit 5 is the means for fixing the height adjustment member. 6 is the support plate 7 is a connecting member 8 is a rotating member 8a is the pivot shaft 9 is the support means for the training equipment body.

Claims

1. This swing training aid for swing sports is characterized by comprising: a spherical part that contacts the gluteus maximus of the trainee's buttocks to constantly allow the trainee to recognize the correct position of their buttocks; an elastic support member that supports the spherical part so that it can swing circumferentially with a predetermined return elasticity to its original position; and a support body that supports the spherical part at a predetermined height position via the elastic support member. By utilizing the swing and rebound elasticity of the spherical part, the spherical part smoothly follows the movement of the body, allowing the trainee to practice swinging while constantly feeling and perceiving the correct position of their buttocks in a completely free swing state that does not restrict any part of the body.

2. The swing training aid for swing sports according to claim 1, characterized in that the spherical part is made of a ball member in which air at a predetermined pressure is sealed inside.

3. The swing training aid for swing sports according to claim 1 or 2, characterized in that the surface of the spherical part is provided with a predetermined protrusion that makes it easy to sense the contact state with the gluteus maximus muscle of the buttocks.

4. The swing training aid for swing sports according to claim 1, 2, or 3, characterized in that the elastic support member is supported on the support body via a predetermined height adjustment member.

5. The swing training aid for swing sports according to claim 4, characterized in that the upper part of the height adjustment member is bent in a predetermined forward-leaning direction to correspond to the forward-leaning posture during a swing.

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