WO2022194338A1

WO2022194338A1 - Sports apparatus

Info

Publication number: WO2022194338A1
Application number: PCT/EP2021/056464
Authority: WO
Inventors: Vitalij Zittel; Kai FÜGEL
Original assignee: Bownce Holding Plc
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2022-09-22
Also published as: EP4308259A1; US20240181317A1

Abstract

The invention relates to a sports apparatus (1), comprising a boxing body (2), a tension cable (3), a first fastening means (4), more particularly upper fastening means, and a second fastening means (5), more particularly lower fastening means, wherein the tension cable (3) is clamped between the two fastening means (4, 5), and wherein the tension cable (3) cooperates with the boxing body (2) such that the boxing body (2) is held in an initial position and such that the boxing body (2) can be displaced out of the initial position, more particularly elastically, by the action of a boxing blow and is subsequently returned to the initial position. The sports apparatus comprises a measuring apparatus (21) designed to metrologically detect a boxing blow which hits the boxing body.

Description

SPORT ARRANGEMENT

The invention relates to a sports arrangement.

Such a sports assembly may include a box body, a box body retainer, a support assembly for retaining the box body retainer. The holding arrangement and the box body receptacle are set up in such a way that the box body is held in a basic position. During the intended use, the box body is elastically displaced from the basic position by the action of a boxing blow and is then returned to the basic position. Such an arrangement can be formed in particular by a punching ball arrangement, a punching bag arrangement or a double end ball arrangement. Such a sports arrangement is described in German patent application 10 2019 002 702.7.

It is the object of the present invention to further develop the aforementioned arrangement. This is solved by a sports arrangement according to claim 1 and a use according to claim 9; Configurations are the subject of the dependent claims and the description.

The box body can be designed in different ways and in particular be adapted to the training requirements. The box body can, for example, be round or angular, in particular as a spherical or egg-shaped ball, and as a polyhedron.

In particular, the box body is a ball, which preferably has a maximum weight of 100 g. The weight of the ball includes the electronic components contained in the ball. In this respect, the power supply for the components arranged in the ball is preferably provided with a battery that is as small as possible and possibly rechargeable. A wired power supply is possible, but less preferred

The box body is clamped in particular using a tensioning cable. In a rest position, the tensioning cable is oriented in particular vertically.

In particular, an evaluation result can be output in different ways. The evaluation result can be based on a computational evaluation. Corresponding values on which the evaluation is based are explained in the exemplary embodiment. In the simplest case, the rating is a numerical value that is proportional to an amplitude of the deflection of the movement of the box body A wireless data transmission from and to the box body can be set up and takes place in particular via the Bluetooth Low Energy Standard.

The sports arrangement can include an electronic terminal device, in particular a mobile phone or a tablet computer, on which the evaluation result is output.

In one embodiment, a trajectory of the boxing body is determined. Based on the trajectory, conclusions can be drawn about the boxing hit. In particular, the trajectory for at least one or two post-oscillations is considered for the assessment. A post-vibration is the vibration at time t with the proviso that T< t < 2xT, where T represents the period of a ball vibration. Contrary to common usage, the period between two zero crossings is referred to as the period (see diagrams of the figures],

If the movement path for several post-oscillations, viewed from above, is as close as possible to a vertical plane, a high-quality impact can be assumed in one embodiment.

In particular, a comparison of the trajectories before the impact and the trajectory after the impact can be made for the evaluation.

The invention is explained in more detail below with reference to the figures; herein shows:

FIG. 1 shows a sports arrangement according to the invention;

FIG. 2 diagrams of measured values during an oscillating movement of the box body;

FIG. 3 diagrams of measured values after a boxing hit on a stationary boxing body;

Figure 4 and 5 Diagrams of measured values after a boxing hit on a swinging one

box body;

FIG. 6 shows a measured value diagram and a trajectory after a high-quality

Boxing hit on a swinging box body.

FIG. 7 shows a measured value diagram and a trajectory after an inferior

Boxing hit on a swinging box body. Figure 1 shows a sports arrangement 1, which basically corresponds to what is described in German patent application 10 2019 002 702.7. This comprises a box body 2, which is held by means of a tensioning cable 3. The tensioning cable 2 is between a first upper attachment 4 and a second lower attachment 5 clamped. The sports arrangement 1 also includes an electronic terminal 8 for operation. The mobile terminal device 8 can be a mobile phone or a tablet PC, which can be accommodated in a holder.

A measuring arrangement 21 is attached to, in particular in, the box body 2 . The measuring arrangement 21 is set up to measure a boxing hit. For this purpose, the arrangement comprises at least one acceleration sensor 211, 212 and a computing unit 213. The at least one acceleration sensor detects accelerations to which the box body 2 is exposed during use and generates acceleration values from them. The computing unit 213 can process these generated acceleration values. A communication unit attached to the body of the box can, for example, communicate evaluation results or the raw data to the outside, in particular to the mobile phone. The communication with the mobile terminal can take place indirectly via an internet bridge and/or a central processing unit of a service provider.

An essential part of this sports arrangement is the measurement of a boxing hit, which is explained in more detail using the following figures. Figures 2a to 7a show the box arrangement in the respective situations during use. The diagrams drawn below (Figures 2b, 2c, 3b, 3c, 4b, 4c, 5b, 5c, 6b, 7b] show values that belong to the respective situations drawn above.

In an idealized view, the box body 2 oscillates back and forth in the y direction, for example. The different illustrations in FIG. 2 describe this oscillation process, with FIG. 2b showing the respective associated longitudinal deflection in the y-direction. FIG. 2c shows the respective associated longitudinal acceleration a.

Characteristic of the ideal vibration is a period T that is constant over the subsequent vibrations (post-vibrations). Due to friction losses, the amplitude of the deflection y and the amplitude of the acceleration a decrease with the duration of the vibration t.

Analogous to the representation according to FIG. 2, FIG. 3 shows the diagrams when the box body is brought into vibration from the rest position by a boxing blow at time t=0. Within a few milliseconds, the box body is completely deflected and levels off in the oscillation. A boxing hit can now be determined by different sizes. On the one hand, a literally abrupt increase in the amplitude of the deflection in the direction of the impact is a clear signal that an impact has occurred. On the other hand, a detected phase offset, in particular by about T/2, is a clear signal that an impact has occurred. The phase offset is all the same smaller the closer the impact occurs to the moment of greatest deflection. A hit at the time of the greatest deflection is not recognizable on the basis of the phase shift alone.

A possible challenge for the boxer is to hit an already swinging box body as close to zero as possible. An idealized beat is shown in Figure 4 at time tB. The phase shift dP between the vibration before the boxing hit and the vibration after the boxing hit can be seen. If the phase offset dP corresponds approximately to half the period T, the box body 2 was hit at the zero crossing.

Another possible challenge for the boxer is to hit the swinging box body as centrally as possible. Analogous to FIG. 4, FIG. 5 shows an impact on an already vibrating box body. In FIG. 5c, a rotational acceleration w of the box body about the cable axis M is shown in a different way. The angular acceleration w depends on the eccentricity of the boxing hit. In the ideal case, the rotational acceleration is small or equal to zero.

Another possible challenge for the boxer is to get the boxer's body into optimal vibration. In addition to the representation according to FIG. 6b, FIG. 6c shows a trajectory TR. The trajectory TR describes the trajectory of the box body. Since the box body is held in a defined vertical position by the box body receptacle, only the course of the trajectory in plan view is important, ie a projection of the trajectory onto a plane that is spanned by the xy coordinates. Assumed for the sake of simplicity, the box body initially only vibrates in the y-direction. The boxing hit occurs at time tB=t2 in the y-direction exactly at the zero crossing. If the box body is optimally hit, the box body starts to oscillate again in which the trajectory lies exclusively in the y-direction

In contrast, FIG. 7c shows the trajectory for an inferior boxing hit. The boxing hit does not optimally hit the box body at the zero crossing, namely laterally. The box body does oscillate in the y-direction. However, the trajectory traces a tumbling movement, since the box body also enters into an oscillating movement in the x-direction. The period of the oscillation in the x-direction can differ from the period of the Distinguish vibration in the y-direction.

An evaluation of the boxing hit can now be carried out using the trajectory. The higher value a boxing hit, the less staggering the trajectory. A vibration of the box body with the smallest possible movement components in the direction transverse to a particular predetermined main impact direction, which can be determined using the trajectory, is therefore the result of an optimal boxing impact.

A first post-oscillation occurs between times t4 and t6; a second ringing occurs between times t6 and t8.

The longitudinal acceleration and the rotational acceleration are recorded using at least one acceleration sensor 211, 212. The longitudinal acceleration can have values above 200 g for a professional boxing hit. The values of the rotational acceleration w are significantly lower and are even zero for an ideal impact. Rotational accelerations above 20g (relative to a reference point on the ball surface) already indicate a badly hit shot. In this respect, there are different requirement profiles for the acceleration sensor for the types of acceleration.

In the present case, two acceleration sensors 211, 212 are used. The first acceleration sensor 211 is a longitudinal acceleration sensor. The longitudinal acceleration sensor is set up to measure accelerations of at least 100 g, in particular 150 g, and to output corresponding acceleration values.

Suitable acceleration sensors that are set up to detect such high accelerations are commercially available at low cost if they are only intended to detect longitudinal acceleration. Corresponding acceleration sensors are, however, significantly more expensive, if they are available at all, if they are also supposed to record rotational accelerations at the same time.

The invention therefore provides for the acceleration sensors to be designed separately because of the significantly different measuring ranges. A second acceleration sensor 212 is used for detecting the rotational acceleration. This second acceleration sensor 213 is designed according to the requirement profile in such a way that only the low rotational accelerations up to a maximum of 20g (relative to a reference point on the ball surface) are recorded. All other values above this are irrelevant in terms of content, since the associated shot was hit too decentralized anyway. A rotational acceleration sensor that is suitable here is also commercially available at low cost. The adjustment of the cable tension is carried out as follows. A certain period of time makes sense for optimal training success. Advanced athletes prefer a higher impact frequency and therefore want a shorter period of an oscillation. A longer period is desirable for beginners. Different periods are stored for different usage profiles.

Adjusting the cable tension is therefore like tuning a stringed instrument. First, a user profile is entered, for example "professional" or "beginner". A period of time T that matches the usage profile is determined using a database query. The user is then prompted to carry out a test stroke. In particular, this test impact can be carried out with any degree of hardness, since the period of oscillation is constant regardless of the impact hardness. The period of the subsequent vibrations is determined on the basis of the recorded longitudinal acceleration. The user is then prompted to increase or decrease the cable tension.

Reference List

1 sports arrangement

2 box bodies

3 tension rope

4 upper attachment

5 lower attachment

8 end device, in particular mobile phone or tablet PC

9 boxing glove

21 Measuring arrangement in the box body

211 first acceleration sensor

212 second acceleration sensor

213 unit of account

22 communication unit t duration

T Period of oscillation y Deflection a Longitudinal acceleration w Rotational acceleration

Claims

Expectations

1. Sports arrangement (1], comprising a box body (2], a tensioning cable (3], a first, in particular upper, attachment (4], a second, in particular lower, attachment (5]), the tensioning cable (3] between the two Fastenings (4, 5] is clamped, the tensioning cable (3) interacting with the box body (2] in such a way that the box body (2] is held in a basic position and that the box body (2) is held in place by the effect of a boxing blow, in particular elastically can be shifted out of the basic position and is then returned to the basic position, the sports arrangement comprising a measuring arrangement (21] which is set up to metrologically detect a boxing hit on the box body.

2. Sports arrangement (10) according to the preceding claim, characterized in that the sports arrangement is set up to carry out an evaluation of the boxing hit based on the metrological detection and to output an evaluation result to the user.

3. Sports arrangement (10) according to the preceding claim, characterized in that the boxing body can perform an oscillating movement, with a boxing blow acting on the oscillating boxing body, that the sports arrangement is set up to determine the time of the boxing blow in relation to the oscillating movement and the To generate an evaluation depending on the determined point in time.

4. Sports arrangement (10) according to the preceding claim, characterized in that the sports arrangement is set up to detect a rotational acceleration of the box body, and that the sports arrangement is set up to generate the evaluation as a function of the determined rotational acceleration.

5. Sports arrangement (10] according to one of the preceding claims, characterized in that the sports facility is set up to determine an at least two-dimensional trajectory (TR) of the box body, in particular to determine the trajectory in plan view, and in that the sports arrangement is set up to evaluate to generate depending on the determined trajectory (TR].

6. Sports arrangement (10) according to the preceding claim, characterized in that the sports facility is set up, when generating the evaluation, the trajectory (TR) of the box body during a first post-oscillation (t4->t6] and/or during a second post-oscillation ( t6->t8] must be taken into account.

7. Sports arrangement (10) according to one of the preceding claims, characterized in that the sports facility comprises two separate acceleration sensors which are attached to the box body (2], namely a first acceleration sensor (211] for detecting a longitudinal acceleration (a], and a second Acceleration sensor (212] for detecting a rotational acceleration (w], wherein the first acceleration sensor (211] is set up to detect a maximum longitudinal acceleration (a] of at least 100g, in particular wherein the second acceleration sensor (212] is set up to detect a maximum rotational acceleration (a ] of max. 20g, in particular in relation to a reference point on the surface of the box body.

8. Use of a box arrangement according to any one of the preceding claims.

9. Use according to the previous claim, wherein to set a pretension after a boxing hit, the period of the vibration of the boxing body generated by the boxing hit is determined, that the determined period is compared with a default value, and that, based on the comparison result, the user is prompted will the

adjust cable tension. 10 Use according to the previous claim, wherein the default value is variable and is adjusted based on a user input.