Exercise training device for supporting alignment setup of user motion data collection device

Abstract

Disclosed is an exercise training device for supporting alignment setup of a user motion data collection device. The disclosed exercise training device for supporting alignment setup of a user motion data collection device comprises: a hollow shaft having a striking portion mounted at one end thereof; and a capsule structure which is mounted at the other end of the shaft and has, inside the shaft, a data processing module which collects and processes user motion data, wherein the shaft and the capsule structure may have a matching mechanism therebetween for guiding a matching position for mounting the capsule structure onto the shaft. Accordingly, a matching mechanism for an exercise training device that collects user motion data may be provided, the matching mechanism being capable of providing more precise pre- and post-support for alignment setup of the exercise training device.

Description

Exercise training device supporting alignment setup of user motion data acquisition device

[0001] The present invention relates to an exercise training device that supports an alignment setup of a user motion data acquisition device, and more specifically, to an exercise training device that supports an alignment setup of a user motion data acquisition device having a matching mechanism for a user motion data acquisition device of the shaft internal mounting type.

[0002] Various devices are being developed to collect motion data of users practicing a swing (e.g., a swing in sports such as golf). As a relevant prior art, U.S. Patent Publication No. 2017-0203181 describes a technology for collecting and displaying user motion data through a sensor unit that includes a sensor part attached to a golf club to measure three-axis angular velocity.

[0003] Meanwhile, recent advancements in sensing technology have enabled more accurate detection of user swing motion. In particular, as processor technologies for processing sensing data are also undergoing rapid development alongside vision technology, displaying collected motion data to users via vision technology is expected to see a surge in market demand in the future. The market trends for the smartification of various exercise equipment reflect this.

[0004] In motion data acquisition devices, increasing accuracy is very important. Generally, swing motion data is very sensitive to errors, and even a small impact angle can have a significant impact on the trajectory of the struck object.

[0005] In this regard, the motion data acquisition device is designed to perform software alignment setup in advance during operation. The device, having completed the alignment setup, enables more accurate detection of user motion data collected thereafter.

[0006] Furthermore, when the device collects motion data after the alignment setup is complete, it can be predicted that maintaining the position from the initial setup, despite external impacts caused by continuous striking motions, is crucial for improving accuracy. If the accuracy of swing motion data deteriorates with continued use, it may entail the inconvenience of having to re-set up the alignment. While using adhesive to secure the device for this purpose could be considered, adhesives have the disadvantage of being vulnerable to external impacts, and sensor alignment errors are prone to occur if the insertion position or angle of the fixed object changes even slightly.

[0007] Furthermore, in the manufacturing or production process of an exercise training device including a motion data acquisition device, it is necessary for the device to be mounted on the device while maintaining hardware-level axis alignment; however, due to a lack of existing research on this, swing data distortion caused by axis misalignment and resulting measurement errors may occur.

[0008] An embodiment of the present invention provides a matching mechanism for an exercise training device that collects user motion data, which can more precisely support the alignment setup of the exercise training device before and after.

[0009] An exercise practice device (100) that supports alignment setup of a user motion data collection device (DCD) according to one embodiment comprises: a shaft (10) having a hollow (H) structure in which a striking part (h) is mounted on one end (e1); and a capsule structure (20) mounted on the other end (e2) of the shaft (10) and having a data processing module (PM) that collects and processes user motion data placed inside the shaft (10); wherein the shaft and the capsule structure may have a alignment mechanism between them that guides a alignment position (P) for mounting the capsule structure to the shaft.

[0010] The above-described alignment mechanism may include one or more first alignment parts (12) provided at the other end (e2) of the shaft (10); and one or more second alignment parts (22) provided in the capsule structure (20).

[0011] The first fitting part (12) above is provided in an open type at the other end (e2) of the shaft (10) and may have an open-mouth structure that is open toward the capsule structure entering the fitting position.

[0012] The first fitting part (12) may have an inner surface (121) facing toward the capsule structure.

[0013] The second matching part (22) above is provided in a protruding type on the capsule structure (20) and may have a tongue structure protruding toward the shaft side entering the matching position.

[0014] The second matching part (22) may have a counter-outer surface (221) facing the other end of the shaft.

[0015] At the above alignment position (P), the inner surface (121) and the counter-outer surface (221) are arranged to face each other in the first direction (I) so as to have at least partial contact.

[0016] The above capsule structure (20) comprises: a body (24) disposed within the shaft hollow (H) structure and overlapping with the shaft; and a flange (26) overhanging from the other end of the shaft at the matching position (P), wherein the second matching portion (22) may be provided in a connecting portion (CP) extending from the body to the flange.

[0017] The above open-mouth structure has a predetermined open length (d1) extending from a first open point (O1) to a second open point (O2) via a transition section (OT), and the width of the first open point (O1) and the width of the transition section (OT) can each be formed to be less than or equal to the width of the second open point (O2).

[0018] The above open-mouth structure may have a width that gradually increases from the first open point (O1) to the second open point (O2).

[0019] The above predetermined opening length may be 1 mm to 50 mm.

[0020] The first joints are provided in a plurality, and the plurality of first joints are symmetrically arranged with respect to the center of the hollow (H) structure, and the second joints are also provided in a plurality, and the plurality of second joints are symmetrically arranged with respect to the center of the capsule structure (20), and the plurality of first joints can each be joined with the plurality of second joints.

[0021] The above capsule structure (20) has a mounting portion (242) inside which the data processing module (PM) is mounted—the data processing module is horizontally seated in the mounting portion—a first plane (P1) that supports the horizontal seating of the data processing module in the mounting portion (242) and a second plane (P2) that defines at least one of the plurality of second alignment portions (22) can be arranged parallel to each other.

[0022] The above capsule structure includes a body that encloses the data processing module and a flange provided at its end, wherein the capsule structure is guided to the alignment position by the body being inserted and mounted in a sliding manner into the hollow structure of the shaft, and wherein self-alignment can be achieved by the first alignment part and the second alignment part of the alignment mechanism engaging with each other.

[0023] The flange has a wider circumference than the body, so that the flange can define the stopping position of the capsule structure during insertion and mounting of the body into the shaft.

[0024] It further includes an elastic member interposed between the shaft and the capsule structure mounted therein to tightly connect them, wherein the elastic member can ensure alignment between the first and second alignment parts at the alignment position.

[0025] This technology can provide a matching mechanism for an exercise training device that collects user motion data, which can more precisely support the alignment setup of the exercise training device before and after.

[0026] In addition, this technology can improve the precision of swing motion data and simplify the assembly and maintenance process by simultaneously achieving alignment and fixation of the exercise training device through a matching mechanism.

[0027] Furthermore, this technology enables the maintenance of hardware-based axis alignment during the manufacturing process of an exercise training device by guiding the shaft's internally mounted capsule structure into the correct position through a alignment mechanism.

[0028] In addition, this technology can minimize swing data measurement errors by fixing the motion data acquisition device so that it does not freely rotate or tilt through the mechanical coupling of the groove and protrusion.

[0029] In addition, since the capsule structure can be inserted according to the direction of the groove provided in the shaft, the assembly process is simple and a consistent mounting position and angle can be ensured even during maintenance (replacement, inspection).

[0030] In addition, this technology allows for increased durability by ensuring that the module does not shake due to repetitive shocks and vibrations during swinging through a tight bond between the groove and the capsule.

[0031] FIG. 1 is a drawing illustrating the overall configuration of an exercise practice device that supports the alignment setup of a user motion data acquisition device according to one embodiment.

[0032] FIG. 2 is a drawing illustrating in detail the alignment mechanism of an exercise training device according to one embodiment in a state prior to alignment.

[0033] FIG. 3 is a drawing showing in detail the alignment mechanism of an exercise training device according to one embodiment after alignment.

[0034] FIG. 4 is a drawing showing FIG. 2 from a different direction.

[0035] FIG. 5 is a drawing showing FIG. 3 from a different direction.

[0036] FIG. 6 is a drawing showing an enlarged view of part A of FIG. 2.

[0037] FIG. 7 is a drawing illustrating various implementation examples of a matching mechanism according to one embodiment.

[0038] FIG. 8 is a drawing illustrating the detailed configuration of a motion data acquisition device according to one embodiment.

[0039] FIG. 9 is a diagram showing the cross-section of FIG. 8 centered on the arrangement relationship of the data processing module.

[0040] The most preferred embodiment of the present invention is described below. In the drawings, thicknesses and spacings are depicted for convenience of explanation and may be exaggerated compared to their actual physical thicknesses. In describing the present invention, known components unrelated to the essence of the invention may be omitted. It should be noted that in assigning reference numbers to the components of each drawing, identical components are assigned the same number as much as possible, even if they are shown in different drawings.

[0041]

[0042] FIG. 1 illustrates the overall configuration of an exercise practice device (100) that supports the alignment setup of a user motion data collection device (DCD) according to one embodiment.

[0043] As illustrated in FIG. 1, an exercise training device (100) (hereinafter also simply referred to as the ‘exercise training device’) that supports the alignment setup of a user motion data collection device (DCD) includes a shaft (10) and a capsule structure (20) that encloses a data processing module (PM, see FIG. 8) that collects and processes user motion data.

[0044] The shaft (10) has a first end (e1) and a second end (e2) corresponding to both ends, and a striking part (h) is mounted on the first end (e1), and a capsule structure (20) is mounted on the second end (e2). The shaft (10) may have a hollow (H) structure.

[0045] An exercise practice device (100) according to one embodiment may be a golf practice device. Accordingly, the shaft (10) may be a golf club shaft, the striking part (h) may be a head, and the capsule structure (20) may be located within the grip (g) of the golf club to collect user golf swing motion data. Hereinafter, the exercise practice device (100) will be described with an embodiment in which it is a golf practice device, but the present invention is not limited thereto. Furthermore, it is sufficient for the golf practice device to have a data processing module embedded in a known 'golf club' to collect and process user motion data.

[0046] A capsule structure (20) containing a data processing module (PM, see FIG. 8) may be referred to in the present invention as a user motion data collection device (or more simply as a motion data collection device). That is, the data processing module (PM) and the capsule structure (20) may be referred to as a motion data collection device (DCD, FIG. 8). Additionally, since the data processing module (PM) is embedded within the capsule structure (20), the motion data collection device (DCD, FIG. 8) may also be referred to as a capsule-type sensor module.

[0047] With reference to FIGS. 2 to 9, the alignment mechanism of the exercise training device (100) will be examined in detail below. Meanwhile, in FIGS. 2 to 9, for convenience of explanation, the length of the shaft (10) in the first direction (I) is shown as short with some parts omitted, and the length of the capsule structure (20) in the first direction (I) is also shown as short with some parts omitted as needed, but the present invention is not limited to the scale shown.

[0048]

[0049] FIGS. 2 to 5 are drawings illustrating in detail the alignment mechanism of an exercise training device according to one embodiment. FIG. 6 is an enlarged view of part A of FIG. 2.

[0050] As illustrated in FIGS. 2 to 6, the exercise training device (100) has a alignment mechanism to support the alignment setup of the motion data acquisition device (DCD). The alignment setup corresponds to the so-called zero point adjustment when the motion data acquisition device (DCD) performs its inherent operation. That is, after the alignment setup is completed, the motion data acquisition device detects the user's motion.

[0051] A matching mechanism according to one embodiment may be provided in a shaft (10) and a capsule structure (20), and may guide a matching position (P) for mounting the capsule structure (20) to the shaft (10) between them.

[0052] A alignment mechanism according to one embodiment may induce self-alignment when a capsule structure (20) is mounted on a shaft (10).

[0053] A matching mechanism according to one embodiment may include one or more first matching parts (12) provided at the other end (e2) of a shaft (10) and one or more second matching parts (22) provided in a capsule structure (20). In the present invention, the description will focus on an embodiment having a single number of first matching parts (12) and a single number of second matching parts (22), but the present invention is not limited to the number.

[0054] The first fitting part (12) is provided in an open type at the other end (e2) of the shaft (10) and may have an open-mouth structure that is open toward the capsule structure (20) entering the fitting position (P). At this time, the first fitting part (12) may have an inner surface (121) facing toward the capsule structure (20).

[0055] According to one embodiment, the first matching portion (12) can be formed by machining a groove at the other end (e2) of the shaft (10).

[0056] The second matching part (22) is provided in a protruding type on the capsule structure (20) and may have a tongue structure protruding toward the shaft (10) entering the matching position (P). At this time, the second matching part (22) may have a counter-outer surface (221) facing toward the other end (e2) of the shaft (10).

[0057] The second joint portion (22) can be formed through a synthetic resin molding die in which a protrusion can be provided at the connection portion (CP) of the capsule structure (20).

[0058] The inner surface (121) of the first matching part (12) and the counter-outer surface (221) of the second matching part (22) are arranged to face each other in the first direction (I) at the matching position (P) so as to be in contact at least partially. Preferably, the entire surface of the inner surface (121) of the first matching part (12) may be in contact with a part of the counter-outer surface (221) of the second matching part (21). Since the height of the second matching part (22) (height in the second direction (II)) is greater than the height of the first matching part (12) (height in the second direction (II)) (see FIG. 6), the entire surface of the inner surface (121) is in contact with a part of the counter-outer surface (221). This is derived from the overall structure of a capsule structure (20) placed within a shaft (10) according to one embodiment and a data processing module (PM) embedded therein, and is also derived from the presence of an elastic member (28, FIG. 8) as described below.

[0059] An elastic member (28, FIG. 8) is provided along the circumference of the body (24) and is interposed between the shaft (10) and the capsule structure (20) mounted therein to ensure a tight connection between them. Thus, the elastic member (28) can ensure alignment between the first and second alignment parts (12, 22) at the alignment position (P). That is, the elastic member (28) can ensure surface contact between the first and second alignment parts (12, 22), such that the inner surface (121) and the counter-outer surface (221) at least partially contact each other at the alignment position (P). As shown in the drawing, the elastic member (28) may be provided at least two times on the body (24). One may be provided close to the flange (26) and the other may be provided far from the flange (26). Thus, the capsule structure (20) can be firmly fixed to the other end (e2) of the shaft (10). The elastic member will be described later.

[0060] Referring further to FIGS. 2 to 6, the capsule structure (20) may include a body (24) disposed within the shaft hollow (H) structure and overlapping with the shaft (10), and a flange (26) overhanging from the other end (e2) of the shaft (10) at a matching position (P).

[0061] The flange (26) may have a larger circumference relative to the body (24). Assuming that the capsule structure (20) according to one embodiment is cylindrical, the flange (26) may have a larger outer diameter relative to the body (24). Thus, the flange (26) can define the stopping position when the capsule structure is inserted and mounted by sliding it onto the shaft. In addition, the flange (26) may serve not only as a stopping position during the insertion and mounting of the capsule structure onto the shaft, but also as a handle that can be grasped and pulled by hand during the disassembly (maintenance) of the capsule structure from the shaft. In other words, the flange plays an important role in assembly and disassembly (maintenance).

[0062]

[0063] At this time, the second matching portion (22) described above may be provided in a connecting portion (CP) extending from the body (24) to the flange (26) (see FIG. 6). This is based on the premise that the matching mechanism according to one embodiment is a groove-protrusion matching structure, in which a part of the other end of the shaft is removed to become a groove and a part is formed to protrude from the connecting portion of the capsule structure to become a protrusion. At this time, the first matching portion corresponds to the groove and the second matching portion corresponds to the protrusion, respectively.

[0064]

[0065] FIG. 7 illustrates various implementation examples of a matching mechanism according to one embodiment. FIGS. 7a to 7d sequentially illustrate U-shaped, triangular, polygonal, and C-shaped implementation examples of the matching mechanism. At this time, since the first matching part (12) and the second matching part (22) have a structure that matches each other and thus have corresponding shapes, for convenience of explanation, various implementation examples of the matching mechanism will be described below with a focus on the shape of the first matching part (12). Note that the second matching part, which is the counterpart, also has a corresponding shape.

[0066] As illustrated in FIG. 7, the open-mouth structure of the first fitting part (12) may have a predetermined open length (d1) extending from the first open point (O1) to the second open point (O2) via the transition section (OT).

[0067] A predetermined open length (d1) may correspond to a length in the first direction (d1).

[0068] Since the predetermined open length (d1) is a removed part of the shaft, it is desirable to form it within the range of 1mm to 50mm so that it is not removed unnecessarily (consider that shaft weight is a factor that greatly affects the swing). If it is less than 1mm, the intended fixing force may be reduced, and if it is more than 50mm, it may have unwanted effects such as a sense of unfamiliarity for users who are sensitive to shaft weight, so it is desirable to have it within the range of 1mm to 50mm.

[0069] Meanwhile, according to one embodiment, when a single first fitting part and a single second fitting part constitute the fitting mechanism, a predetermined opening length (d1) may be formed over a high range of the aforementioned range. Conversely, when a plurality of first fitting parts and a plurality of second fitting parts constitute the fitting mechanism, a predetermined opening length (d1) may be formed over a low range of the aforementioned range. The coupling between the plurality of first and second fitting parts compensates for the relatively low coupling force between the single first and second fitting parts. Therefore, a fitting mechanism composed of a plurality of first and second fitting parts is preferred by users sensitive to shaft weight.

[0070] At this time, the width of the first open point (O1) and the width of the transition section (OT) may each be formed to be less than or equal to the width (w2) of the second open point (O2). An open-mouth structure according to one embodiment may have a width that gradually increases from the first open point (O1) to the second open point (O2). This is derived from the overall structure of the shaft (10), the capsule structure (20) disposed within the shaft, and the data processing module (PM) embedded in the capsule structure according to one embodiment, and is due to the fact that the body (24) of the capsule structure (20) is inserted and mounted into the hollow (H) structure of the shaft through the other end (e2) of the shaft (10) in a sliding manner. That is, as shown in FIGS. 7a to 7d, the alignment mechanism is all based on the premise that the body of the capsule structure having a flange is inserted and mounted through the open other end of the shaft.

[0071] Due to this unique structure, alignment is supported through a matching mechanism, and at the same time, the matching mechanism remains firmly fixed even after alignment; this allows for convenient assembly and repair during the manufacturing process of the exercise training device, as well as enhanced impact and vibration resistance during use.

[0072] Specifically, the misalignment between the axial direction of the motion data acquisition device and the shaft axial direction is maintained at a level of less than ± a few degrees, thereby reducing alignment errors; the groove-protrusion coupling structure prevents rotation and forward, backward, left, and right movements, improving measurement consistency; and since the insertion and separation directions are fixed, the sensor can be mounted at the same position and angle even when replaced, reducing the burden of recalibration.

[0073] In addition, during the insertion and separation processes, the capsule structure is automatically guided when pushed into the groove during assembly, allowing the insertion position and angle to be determined; during separation, it can be easily detached by pulling in the opposite direction, and maintenance is easy as there are no angle or rotation errors.

[0074] Meanwhile, although the above description focuses on a single first matching part and a single second matching part, an embodiment with multiple parts is also possible. In this case, a plurality of first matching parts are symmetrically arranged with respect to the center of the hollow (H) structure, and a plurality of second matching parts are symmetrically arranged with respect to the center of the capsule structure (20), and a plurality of first matching parts can be matched with a plurality of second matching parts. Such symmetrical arrangement increases the fixing force of the matching mechanism, thereby making it advantageous to achieve alignment support, fixing support after alignment, convenient assembly and repair, and impact and vibration resistance as intended by the present invention.

[0075]

[0076] FIG. 8 illustrates a detailed configuration of a motion data acquisition device (DCD) according to one embodiment. FIG. 9 is a cross-sectional view of FIG. 8.

[0077] As illustrated in the drawing, the motion data acquisition device (DCD) includes a capsule structure (20) in which a data processing module (PM) is embedded. The data processing module (PM) includes various electronic components mounted on a substrate, such as an IMU sensor (accelerometer, gyroscope, etc.), a battery, a communication module, an MCU, etc. These electronic components are depicted on the substrate in the drawing in various heights.

[0078] The capsule structure (20) may have a cavity (C), which is an internal empty space, for housing a data processing module (PM).

[0079] Additionally, at least two elastic members (28) are shown along the circumference of the body (24) of the capsule structure (20). The elastic members (28) can serve as cushioning materials to absorb shocks and vibrations applied to the exercise training device. Additionally, as described above, the elastic members (28) can serve as packing interposed between the shaft (10) and the capsule structure (20) mounted therein to tightly connect them.

[0080] The elastic member (28) according to one embodiment may be formed from a rubber material, a foam material, a polymer material, etc. Additionally, according to another embodiment, the elastic member may be formed from a metal spring material or a material such as an air cushion, as long as it can perform the aforementioned cushioning or packing function.

[0081] A rubber ring may be considered as one embodiment of the elastic member (28). Additionally, a groove (not shown) for seating the elastic member may be formed in the body (24) of the capsule structure so that the elastic member in the form of a rubber ring does not slip out during insertion and can perform its function.

[0082] From the perspective of axis alignment alone, the aforementioned alignment mechanism (i.e., groove-protrusion) alone is sufficient, but when an elastic member (28) is also involved in axis alignment, it is possible to further suppress minute displacement and tilting caused by shock and vibration occurring in the exercise training device during swinging.

[0083] Furthermore, as illustrated in FIGS. 8 and 9, the capsule structure (20) may have a mounting portion (242) inside which a data processing module (PM) is mounted, and the data processing module (PM) may be horizontally seated on the mounting portion (242). Additionally, a first plane (P1) that supports the horizontal seating of the data processing module (PM) on the mounting portion (242) and a second plane (P2) that defines at least one of a plurality of second alignment portions (22) may be arranged parallel to each other. Such alignment of the first plane (P1) and the second plane (P2) has an advantage in terms of the molding structure design of the capsule structure (20) having the second alignment portion (22).

[0084] That is, for the formation of the cavity (C), the capsule structure (20) may include two structures, namely a first body (244) and a second body (246), in which the body (24) is separated vertically. In this case, by forming the second joint part (22) only on the first body (244), it can result in forming the second joint part (22) on the aforementioned connection part (CP). Here, forming the second joint part (22) only on the first body (244) allows the first plane (P1) defining the mounting part (242) provided on the second body (246) and the second plane (P2) defining the second joint part (22) to be parallel to each other, thereby providing an advantage in the plastic molding manufacturing process. If, otherwise, the first plane (P1) and the second plane (P2) are arranged to be offset from each other, the design of the molding structure becomes difficult, and there is a higher possibility of errors occurring during the manufacturing process and a risk of delay in the inspection process.

[0085] According to the above-described embodiment, through the mechanical coupling of a first matching part (e.g., a groove) and a second matching part (e.g., a projection) constituting a matching mechanism, the motion data acquisition device can be fixed so that it does not freely rotate or tilt within the shaft, thereby minimizing the swing data measurement error.

[0086] In addition, since the motion data acquisition device (i.e., capsule structure) can be inserted into the shaft in the direction of the groove provided in the shaft, the assembly process is simple and a consistent mounting position and angle can be ensured even during maintenance (replacement, inspection).

[0087] In addition, through the tight bonding between the groove and the capsule structure, the module does not shake due to the repetitive shocks and vibrations generated during a golf swing, thereby increasing durability.

[0088] Although the technical concept of the present invention has been specifically described according to the preferred embodiments above, it should be noted that the above-mentioned embodiments are for illustrative purposes only and are not intended to be limiting. Furthermore, a person skilled in the art will understand that various embodiments are possible within the scope of the technical concept of the present invention.

[0089] [Explanation of the symbol]

[0090] 10 : Shaft

[0091] 12: First joint

[0092] 121 : If you give it to me

[0093] 20: Capsule structure

[0094] 22 : Second joint

[0095] 221 : Counter-outer surface

[0096] 24 : Body

[0097] 242 : Mounting section

[0098] 26 : Flange

[0099] e1: One end of the shaft

[0100] e2: The other end of the shaft

[0101] PM: Data Processing Module

[0102] P: Matching position

Claims

1. As an exercise training device that supports the alignment setup of a user motion data acquisition device, A hollow shaft with a striking portion mounted on one end; and A capsule structure mounted on the other end of the shaft and having a data processing module that collects and processes user motion data placed inside the shaft; comprising An exercise training device comprising the shaft and the capsule structure having a matching mechanism between them for guiding a matching position for mounting the capsule structure to the shaft.

2. In Paragraph 1, The above matching mechanism is, One or more first mating parts provided at the other end of the shaft; An exercise training device comprising one or more second matching parts provided in the above capsule structure.

3. In Paragraph 2, An exercise training device having an open-mouth structure that is open toward the capsule structure entering the matching position, provided in an open type at the other end of the shaft.

4. In Paragraph 3, The above first matching part is an exercise training device having an inner surface facing toward the capsule structure.

5. In Paragraph 4, An exercise training device having a second matching part provided in a protruding type on the capsule structure and having a tongue structure protruding toward the shaft side entering the matching position.

6. In Paragraph 5, The above second matching part is a motion training device having a counter-outer surface facing the other end of the shaft.

7. In Paragraph 6, An exercise practice device in which the inner surface and the counter-outer surface are arranged to face each other in a first direction at the above-mentioned matching position and at least partially contact each other.

8. In Paragraph 7, The above capsule structure is, A body disposed within the shaft hollow structure and overlapping with the shaft; and A flange overhanging from the other end of the shaft at the above-mentioned mating position; comprising, The above second fitting part is provided at the connection portion extending from the body to the flange, forming an exercise training device.

9. In Paragraph 7, The above-mentioned open-mouth structure has a predetermined opening length extending from a first open point to a second open point via a transition section, and An exercise training device in which the width of the first open point and the width of the transition section are each formed to be less than or equal to the width of the second open point.

10. In Paragraph 9, The above-described open-mouth structure is an exercise training device having a width that gradually increases from the first open point to the second open point.

11. In Paragraph 9, An exercise training device having a predetermined opening length of 1 mm to 50 mm.

12. In Paragraph 2, The first joint members are provided in a plurality, and the plurality of first joint members are symmetrically arranged with respect to the center of the hollow structure. The above second matching parts are also provided in multiple numbers, and the multiple second matching parts are arranged symmetrically with respect to the center of the capsule structure. An exercise training device in which the plurality of first matching parts are each matched with the plurality of second matching parts.

13. In Paragraph 12, The above capsule structure is provided with a mounting portion inside for mounting the data processing module inside—the data processing module is horizontally seated on the mounting portion—, An exercise training device in which a first plane supporting horizontal seating of the data processing module of the mounting portion and a second plane defining at least one of the plurality of second matching portions are arranged parallel to each other.

14. In Paragraph 2, The above capsule structure includes a body that encloses the data processing module and a flange provided at its end, The above capsule structure is guided to the alignment position by the body being inserted and mounted as if sliding into the hollow structure of the shaft, and Here, an exercise training device in which self-alignment is achieved as the first and second matching parts of the above-mentioned matching mechanism interlock with each other.

15. In Paragraph 14, An exercise training device in which the flange has a wider circumference than the body, thereby defining the stopping position of the capsule structure during insertion and mounting of the body into the shaft.

16. In Paragraph 2, Further comprising an elastic member interposed between the shaft and the capsule structure mounted therein to tightly bond them together; The above elastic member is an exercise training device that ensures alignment between the first and second alignment parts at the alignment position.

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