DE102022112520A1 - Smart table tennis bat - Google Patents

Abstract

The present invention relates to a handle shell component, in particular for a table tennis bat, comprising a first segment, wherein a first surface of the first segment is designed as a grip surface for contact with a player's hand; a second segment, wherein a first surface of the second segment is designed as a contact surface a racket blade is formed, characterized in that the first surface of the first segment has a recess in sections and / or in that the first surface of the second segment has a recess in sections and wherein a sensor module is inserted into the recess.

Description

The present invention relates to the technical field of sports equipment and in particular to an intelligent table tennis bat suitable for recording hitting movements, a handle shell component that can be attached to a bat, a motion capture system, an application for evaluating the data collected by the intelligent table tennis bat, and a method for producing the Handle shell component.

In general, data from processes is recorded in order to better analyze and understand these processes. Sensors that can record movement sequences in particular have become smaller and smaller over time, so that their areas of application have constantly expanded. An economically not insignificant area in this context is the sports industry, so that (movement) data of athletes and/or sports equipment when practicing sports is increasingly being recorded in sports so that conclusions can be drawn from this. This data can be used so that athletes can retrospectively analyze and improve their movement sequences, but also to verify referee decisions, for example. Endurance athletes in particular have been recording their body data for a long time. Using wearable sensors (for example as a chest strap, bracelet or watch), heart rate, speed and GPS data are determined and sent to a smartphone, for example.

While the recording of such data was limited to endurance sports for a long time, this technology is also increasingly being used in batting and ball sports.

For tennis, for example, the company Head sells external sensor modules that can be clipped onto the handle from the outside, the transmitted sensor data from which can count the strokes of the game using an app. The Garmin company offers a similar concept for golf clubs. For football players there is the wearable “Playermaker”, which provides data for statistical analysis of your own game when worn on both feet.

There are currently no commercial products in table tennis that can record movement data and draw conclusions. However, the first studies on this were carried out in the work of Dr. Peter Blank executed
(https://www.researchgate.net/publication/343205067_Smart_Racket_-_Instrumented_Racket_as_Real-
time_Feedback_Device_in_Table_Tennis). However, the solutions presented there still have some disadvantages, which in particular mean that the table tennis bat presented there is not “normal” to play.

A few of these disadvantages are outlined below. Similar to other sports, the sensors are attached as an external module at the end of the racket handle. This significantly changes both the weight and the center of gravity of the table tennis bat.

In other sports, this is less important because, for example, a tennis racket with an average weight of 300 g or a golf club with 440 g to 800 g is significantly heavier than a table tennis racket with around 75 g (without rubbers). In addition, ambitious hobby table tennis players are extremely sensitive to the weight, shear point and playability of their racket. Furthermore, Blank's work shows sensors whose electrical circuits are exposed and unprotected on the club face.

Some embodiments in Blank's work also show that the racket blade is at least damaged when the sensors are inserted. In order to describe the feel of a table tennis bat for a player, it is important to understand the structure of a table tennis bat. Such a racket essentially consists of three components: a racket face made of veneer wood, two rubber coverings and, in the area of the handle, two so-called grip shells, which are attached to the racket blade and offer the player the opportunity to hold the racket securely during play. The manufacturers of table tennis bats put a lot of development work into the bat blade, as it is crucial for the playing characteristics of the bat. To put it simply, stiffness, for example, influences the speed of the balls returned. For this reason, several layers of numerous high-tech materials (such as carbon or Dyneema) are sometimes used and combined to produce the veneer of the club face. The damage to the racket blade shown in Blank causes the playing characteristics of the racket to change adversely. In particular, the racket loses its strength and players complain about “slow balls” (such a racket is then referred to as slow among table tennis players). In addition to the deteriorated playing characteristics, there is also an increased risk that the racket will break and/or vibrate undesirably due to damage to the racket blade when hitting.

Especially in table tennis, there are problems due to the compactness of a table tennis racket, the way the racket is made from wood and the sensitivity of table tennis games to weight changes/vibrations special requirements for the provision of a sensor in a table tennis racket.

It is therefore the object of the invention to provide technical solutions for the sport of table tennis, which enable data recording of the table tennis game to be carried out without adversely changing the playing properties of the racket.

Solved for this task with the features of the independent claims.

The features of the various aspects of the invention or the various exemplary embodiments described below can be combined with one another, unless this is explicitly excluded or technically excluded.

At the beginning, some typical terms in connection with a table tennis bat are explained for further understanding. The handle of a table tennis racket typically consists of two grips, referred to as the upper and lower grips, which are each attached to different sides of the grip area of the racket blade and thereby form the grip of the racket. Since the terms upper and lower grip are merely a convention and essentially change when the racket is rotated 180° about its longitudinal axis, the term grip component is used below instead of the term upper and lower, which applies to both the upper and lower grips lower handle shell can stand. Consequently, engagement of a table tennis bat includes a first and a second handle shell component.

According to the invention, a handle shell component is specified, wherein the handle shell component comprises
a grip shell body comprising a first surface which is designed as a grip surface for contact with a player's hand and a second surface which is designed as a contact surface with a racket blade,
wherein the handle shell body has a recess in sections on the first surface and/or on the second surface and a sensor module is at least partially, in particular completely, introduced into the recess.

• Erfindungsgemäß ist eine Griffschalenkomponente angegeben, wobei die Griffschalenkomponente umfasst
  • ein erstes Segment, wobei eine erste Oberfläche des ersten Segments als Grifffläche für einen Kontakt mit einer Hand eines Spielers ausgebildet ist;
  • ein zweites Segment, wobei eine erste Oberfläche des zweiten Segments als Kontaktfläche mit einem Schlägerblatt ausgebildet ist,
• wobei die erste Oberfläche des ersten Segments abschnittsweise eine Ausnehmung aufweist oder dass die erste Oberfläche des zweiten Segments abschnittsweise eine Ausnehmung aufweist und wobei ein Sensormodul zumindest teilweise, insbesondere vollständig, in die Ausnehmung eingebracht ist. Der Griffschalenkörper kann also einteilig oder zweiteilig aus dem ersten und dem zweiten Segment ausgebildet sein.

An alternative formulation of the invention is as follows:

• According to the invention, a handle shell component is specified, wherein the handle shell component comprises
  • a first segment, a first surface of the first segment being formed as a gripping surface for contact with a hand of a player;
  • a second segment, wherein a first surface of the second segment is designed as a contact surface with a club blade,
• wherein the first surface of the first segment has a recess in sections or that the first surface of the second segment has a recess in sections and a sensor module is at least partially, in particular completely, introduced into the recess. The handle shell body can therefore be formed in one piece or in two parts from the first and the second segment.

If the sensor module is not completely, but only partially, accommodated in the recess, then a further recess can also be provided in the club blade, which accommodates the remaining part of the sensor module. The advantages in terms of playing behavior when the sensor is completely incorporated into the handle shell component are discussed below. The variant of jointly accommodating the sensor module in the recess of the handle shell component and in the further recess of the racket blade offers the advantage of being able to design the overall size of the combined recess more flexibly.

The first and second segments can be formed in one piece, in particular from one piece of wood. However, it is also possible to manufacture the first and second segments separately from one another and then connect them to one another in a detachable or permanent manner, in particular by gluing them together. If the first segment is present in one piece in the second segment as a piece of wood, it can still be useful to speak of the first and second segments, since both segments are designed differently depending on their functionality. The surface of the first segment has corresponding curvatures or curves in order to adapt anatomically as well as possible to a player's hand, whereas the surface of the second segment is designed to be as flat as possible, since the glue is typically applied to the handle shell component on this surface to connect the grip shell component to the club face.

Below reference is made to the wording “without” segments. It is easy for the person skilled in the art to see how the following features could be transferred to the alternative formulation.

A recess is incorporated in sections into the handle shell body starting from the first surface, with a volume of the recess being designed to be at least larger than the sensor module, so that the sensor module can be reliably inserted into the recess in the first surface. Since the first surface is the one that is in contact with the player's hand, a cover can be placed on the recess after the sensor module has been inserted into the recess, so that the sensor module is protected in particular from sweat and the player uses the recess as little as possible and the lid feels completely normal to him. In this respect, it is advantageous to set up the cover in such a way that it feels at least similar to a first surface without a sectional recess. If the cover is detachably attached, the sensor module can be easily replaced in this variant, even if the grip shell component is glued to the club blade.

The recess is incorporated into the handle shell body in sections starting from the second surface, with a volume of the recess being designed to be at least larger than the sensor module, so that the sensor module can be reliably inserted into the recess of the handle shell body. In order to connect the grip shell component to the club face, the second surface is glued to the club face. In this case, the club face forms the protected “end” against external environmental influences for the sensor module, since the first surface in this case has no recesses and is continuous, in particular made of wood, and securely protects the sensor module from above.

Another possibility is to provide a recess that completely penetrates the entire handle shell body, i.e. both the first surface and the second surface. This case is described by the following combinations of features: the first surface and the second surface of the handle shell body have a recess at least in sections. In this case, as described above, the first surface must again be provided in such a way that a cover can be attached.

The handle shell component according to the invention has the advantage that the sensor module can be integrated completely and protected into the handle/racket without damaging the racket blade and adversely changing the playing properties of the table tennis racket. The invention also makes it possible to retrofit rackets that have already been purchased with a sensor module by simply removing at least one of the grip shell components and replacing it with the grip shell component according to the invention, which has a sensor. Such an exchange of handle shell components can be easily carried out, especially by employees of table tennis specialist shops. The player's game data can now be recorded without the player having a disadvantageous playing experience or without the racket looking different from the outside.

Preferably, the sensor module is set up to record data that is suitable for characterizing the player's gaming behavior and to send the data wirelessly and/or wired. The sensors are therefore suitable for recording data that can be used, in particular, to distinguish movement sequences from impacts. This advantageously enables a player to analyze his game based on the data collected and/or also to draw conclusions about the material condition of the racket, in particular the condition of the coverings. The conclusion about the material condition is based on the knowledge that the player's hitting movement on older rubbers, which are already worn out and can transmit less spin to a ball, differs from the player's hitting movement on new rubbers. The user can then inform an app to which the data is sent that it is time to replace old coverings with new ones. In particular, the data can also be prepared via the app in such a way that the player's game analysis is displayed graphically. You can draw conclusions from this to improve your game. The sensor module can therefore include preferred sensors that are able to record the corresponding data. These are motion sensors, such as accelerometers, gyroscopes, and/or magnetometers.

In addition, the sensor module can also detect a microphone that records noises.

The sensor module can also include one or more feedback units, such as a haptic module in the form of an unbalance motor, a loudspeaker, and/or a lighting unit (for example a multicolored LED). Feedback to players so far has only been implemented with a time delay, for example by displaying it on an external screen via an app. During the game, an athlete will not be able to use such feedback, especially when concentrating on the opponent or the ball. The integrated feedback units give the player the opportunity to receive haptic, auditory and/or visual feedback during the game. This type of feedback can be controlled in particular via the connected terminal device and can, for example, be switched on or off. As a concrete example, could Feedback can be generated that shows the user whether he has hit a ball correctly.

The sensor module preferably has a processor that processes the data from the various sensors and prepares it for transmission. In addition, the sensor module can have a radio module that can transmit the data, in particular the pre-processed data, for example via Bluetooth or WiFi to a terminal on which the game and/or material analysis application is installed. Such a terminal is in particular a smartphone, a tablet and/or a computer. It is also possible for the data to be transmitted via cable, for example using a USB interface assigned to the sensor module. This has the advantage that a battery of the sensor module can potentially also be charged via the USB interface, whereby the handle shell inevitably has an opening through which sweat and other moisture in particular can penetrate to the sensor module. However, it is also possible to provide an appropriate protective cover in this case.

Preferably, a cover can be attached to the recess in the first surface in order to enclose the sensor module inside the handle shell component to protect it from external influences. This embodiment has already been explained above.

In a preferred embodiment, the sensor module is glued, screwed or clicked into the recess. The sensor module can therefore be glued, screwed and/or clicked. Clickable describes in particular the use of a click closure, which can be implemented in a manner known per se by means of a positive connection and/or a frictional connection. In particular, a component made of plastic can be used here, which can be cast particularly efficiently and which is appropriately equipped to realize the positive and/or frictional connection. This has the advantage that such a plastic part with a positive and/or frictional connection can be manufactured much more easily than if geometric adjustments that form a positive and/or frictional connection are made directly to the recess, which is typically made of wood become. The plastic component can then first be connected to the recess, in particular glued, and the sensor module can be clicked into the plastic component. In this way it is possible for the recess to have a square or rounded shape that is easy to produce, in particular with smooth walls. Clicking has the advantage that the sensor module can be easily inserted into the recess and removed again. Clicking also saves resources and is environmentally friendly. The advantage of gluing is that in this case the structural adjustments to the sensor module and the recess are likely to be the fewest.

The sensor module is expediently designed as an encapsulated sensor module as an ESD protective measure. In this context, it is worth mentioning that table tennis bats are manufactured in wood factories. In these production facilities there is usually no expertise in the handling and processing of electronic components that require special protective measures. Manufacturing with appropriate ESD protection measures would incur considerable costs. However, if the sensor module is already provided as an encapsulated sensor module, in particular to the wood factory, further processing can be carried out safely. In addition, in this case there is no exposed electronics, so that the encapsulated sensor module is also protected from sweat and moisture with which the sensor module can come into contact, especially when playing with a table tennis bat. Encapsulating the electronics into an internal module also has the advantage that the manufacturing process of the entire racket can easily be separated into two sequential, independent steps. In the first step, the electronic board is assembled and encapsulated. Most electronics assemblers offer this “encapsulation step” as a common production step, for example by potting or installing them in plastic housings. In the second production step, the encapsulated electronics, i.e. the sensor module, can easily be installed in the wood factory. Due to the encapsulation, no additional electronics workstations or measures are necessary when handling electronic components.

The sensor module preferably includes a battery power supply, the battery being rechargeable using a USB port and/or induction. The advantage of the USB port is that it can be used to transfer data at the same time, and that users typically already have appropriate USB charging cables. Charging via induction has the advantage that in this case the sensor module can be installed completely inside the racket handle and is therefore protected from liquid. When charging by induction, it is also possible to optimize the material of the handle shell component so that charging by induction can be carried out as energy-efficiently as possible.

The recess is expediently matched to the sensor module in such a way that a center of gravity of the recess and the sensor module inserted therein of the handle shells component corresponds to a center of gravity of the handle shell component without the recess. This has the advantage that, ideally, the player will not notice any difference in the playing behavior of the table tennis bat.

In order to enable the direct integration of the sensor module into the racket handle, material, in particular wood, is removed from the handle shell body or the first segment and/or the second segment of the handle shell component in the production process of the handle shell component, thereby creating the recess. The material can be removed, for example, by drilling, punching or milling. In principle, this process can also be carried out subsequently on conventional handle shell components without a sensor module that were already connected to a racket. The recess must be provided in such a way that the volume of the recess is at least as large as the sensor module.

The sensor module can be encapsulated in a further production step, as described above. In the next step, the sensor module can be inserted into the recess, for example by gluing, clicking or screwing. The now fully manufactured handle shell component is now attached to the racket blade in a further step, in particular by gluing the first surface of the second segment of the grip shell component to the racket blade. Due to the direct indication in the handle shell component, the original weight of the handle shell component is reduced by the material removed from the interior of the handle shell component and thereby compensates for the additional weight of the sensor module. The sensor module can, for example, have the shape of a cuboid in which the internal arrangement of the individual components is selected such that the center of gravity of the module lies in the geometric center of this cuboid. As a result, the center of gravity and the weight of the removed, in particular milled, material of the handle shell component can be precisely compensated for in the manufacturing process.

If the sensor module is heavier than a geometrically minimally necessary recess in order to be able to insert the sensor module, the milling can be larger, so that the recess is larger than is geometrically necessary for inserting the sensor module. By positioning the sensor module appropriately in the middle, a center of gravity can then be achieved that corresponds to that of the original handle shell component.

If the sensor module is lighter than the milled material, the recess can correspond exactly to the size of the sensor module and the sensor module can be brought to the required weight using additional weights.

Another advantage of the manufacturing process is that table tennis strokes that have already been purchased can easily be retrofitted with the handle shell component according to the invention.

According to the invention, a table tennis bat is also specified, the table tennis bat having
a two-sided racket blade with an area, in particular approximately elliptical, for attaching rubber coverings and a grip area extending elongately from the racket blade;
two rubber coverings, which are in particular detachably connected to the racket blade,
two handle shell components, wherein a first handle shell component is releasably connected to a first side of the handle area and a second handle shell component is detachably connected to a second side of the handle area,
wherein at least one of the handle shell components is designed like the handle shell component according to the invention.

The racket according to the invention offers the player the advantage that he can record data regarding his game without disadvantageous playing properties of the racket through the built-in sensor module. In particular, the player can use his existing racket and simply upgrade it with the handle shell component according to the invention. It is also possible to distribute the sensors to two different handle shell components.

In addition, according to the invention, an application (app) is specified which is designed to analyze and evaluate a playing behavior of a table tennis player and/or a material condition of a sports racket, in particular a table tennis racket. This app can in particular be installed on a player's device and programmed with appropriate algorithms to carry out the analysis and evaluation. The terminal device is preferably set up to receive the sensor data. The end device can therefore be coupled to the sensor module in a data-conducting, wired and/or wireless manner. Votes can be implemented in the algorithms, which, for example, display accelerations at the time of a soon after., club speeds and the like and which can in particular be compared with past data. In particular, neural networks can also be stored that are used to analyze gaming behavior and/or the Material condition, especially the coverings, can be used.

For example, the neural network can be trained to analyze game behavior with data that corresponds to a technically correct movement sequence. For example, a first data set can correspond to a correctly executed forehand stroke movement and a second data set can correspond to an incorrectly executed forehand stroke movement. Through appropriate marking, the neural network then learns to distinguish technically correctly executed movements from technically incorrectly executed movements. The training data is preferably recorded with the same sensors that the sensor module also includes.

If the player's real hitting movements, which are extracted from the real measured sensor data of the sensor module, are then transferred to the neural network, it can be graphically displayed in the app whether or to what percentage the player's hits are correct or incorrect Technology can be classified. Using appropriate training data, the neural network is also able to differentiate between individual stroke techniques, such as forehand, backhand, topspin, backspin, etc.

Another possible feature is that training data sets are used by professionals to generate the training data. The neural network would then classify whether a shot was delivered in such a way that the shot corresponds to that of the corresponding professional. In this way, the app could guide the player on how to play Timo Boll, for example, or how to specifically put together “special shots” from certain professionals. For example, a backhand like the player Timo Boll and a forehand like the player Dirk Müssig. The corresponding data sets can be imported by the players for this application, especially with the intelligent table tennis bat.

However, training data sets can also be used which, on the one hand, reflect the movement sequences of a racket with new rubbers and other training data sets which reflect the movement sequences of a racket with worn rubbers at different levels of wear. The player's actually recorded sensor data can then be classified by the neural network so that the wear and tear of the player's table tennis rubbers can be determined. The app could then inform players that, for example, it is time to replace the playing rubbers with new ones. Neural networks have proven to be particularly powerful and flexible for such classifications. Alternatively, heuristic formulas can also be used. Characteristics of the individual strokes can therefore be determined, such as stroke speed, stroke angle, error rates or others. But other variables, such as the frequency with which the wood resonates after a blow, can also be measured. These sizes change as the material wears. Particularly in the case of heuristic formulas, a statistical evaluation of the mean, standard deviation and/or extreme values can also be carried out, for example to make statements about changes in the state of the material.

Material conditions can also be “captured” and analyzed in other sports. In tennis, the tension of the strings decreases with frequent play. As a result, tennis players re-string their rackets more often. I would also be able to measure that with our approach.

When playing golf, the “grooves” in the club face become clogged and the ball no longer gets as much spin.

A further aspect of the invention is a motion capture system comprising movements of a table tennis player
a table tennis bat according to the invention, which is designed to record data that is suitable for characterizing the playing behavior of a player and to send the data wirelessly and / or wired;
an application according to the invention implemented on a user terminal, the user terminal being set up to receive the data and the application being programmed to analyze and evaluate the playing behavior and/or a material condition of the table tennis bat.

As already described above, the game behavior and/or the material condition can be recorded and analyzed using this motion capture system.

• Bereitstellen einer, insbesondere einstückig aus Holz gefertigten, Griffschalenkörpers;
• Einbringen einer abschnittsweisen Ausnehmung in den Griffschalenkörper, wobei die Ausnehmung zumindest die Größe eines Sensormoduls aufweist;
• Verkleben, Verklicken oder Verschrauben des Sensormoduls in der Ausnehmung.

According to a further aspect of the invention, a method for producing the handle shell component according to the invention is specified, comprising the following steps:

• Providing a handle shell body, in particular made in one piece from wood;
• Introducing a sectional recess into the handle shell body, the recess having at least the size of a sensor module;
• Gluing, clicking or screwing the sensor module into the recess.

This creates the handle shell component.

In one embodiment, it may be possible that the sensor module does not fit completely into the handle shell component. In this case, it is possible for the sensor module to protrude with respect to the recess and for an additional recess to be provided on the racket blade, in particular through a non-continuous milling, with the recess in the grip shell component and the additional recess in the racket blade together forming the receiving area for the Form a sensor module.

• 1: zeigt einen Querschnitt entlang einer Längsachse eines erfindungsgemäßen Tischtennisschlägers und das entsprechende Bewegungserfassungssystem.

Preferred embodiments of the present invention are explained below with reference to the accompanying figure:

• 1 : shows a cross section along a longitudinal axis of a table tennis bat according to the invention and the corresponding motion detection system.

Numerous features of the present invention are explained in detail below using preferred embodiments. The present disclosure is not limited to the specifically mentioned combinations of features. Rather, the features mentioned here can be combined in any way to form embodiments according to the invention, unless this is expressly excluded below.

1 shows a cross section along a longitudinal axis of a table tennis racket 101 according to the invention and the corresponding motion detection system 100.

The table tennis racket 101 comprises a racket blade 105, which is in particular designed to be continuous, wherein a first table tennis surface 110 and a second table tennis surface 115 are detachably connected to an area of the racket blade 105 on opposite sides. On another area of the racket blade, a first grip shell component 120 and a second grip shell component 121 are also detachably attached on opposite sides, the first grip shell component 120 and the second grip shell component 121 forming the concept of the table tennis bat 101.

The first handle shell component 120 has a recess 126 in its handle shell body 125 into which a sensor module 130 is completely integrated. The club face 105 preferably remains intact. If the electronics of the sensor module 130 are encapsulated, this also provides protection against liquids. The sensor module 130 is designed in combination with the recess 126 so that the feel of the game is not adversely affected. In particular through a corresponding weight and center of gravity adjustment, which is to be provided in such a way that the weight and center of gravity of the handle shell component 120 correspond to that of the second handle shell component 121.

The sensor module 130 can record measurement data that characterize the game of a table tennis player and send them via the radio connection 135 to a terminal 140, in particular to a smartphone 140. An application is implemented on the smartphone 140, which evaluates the game data and draws conclusions about the player's gaming behavior and/or about material wear, in particular of the coverings 110, 115. The analysis data generated by the application is output on a graphical output 150 of the smartphone 140 in order to guide the player either with regard to his playing style and/or with regard to replacing the rubber.

The invention makes it possible for table tennis players to buy an intelligent table tennis bat or to retrofit their old bat as an intelligent table tennis bat in order to be able to analyze and evaluate their game data intelligently using the associated app.

Claims (11)

Handle shell component (120), in particular for a table tennis bat, comprising a handle shell body (125) comprising a first surface which is designed as a grip surface for contact with a player's hand and a second surface which is designed as a contact surface with a racket blade (105). , characterized in that the handle shell body (125) has a recess (126) in sections on the first surface and/or on the second surface and wherein a sensor module (130) is at least partially, in particular completely, introduced into the recess (126). Handle shell component Claim 1 , characterized in that the sensor module (130) is set up to record data that is suitable for characterizing the player's gaming behavior and to send the data wirelessly and/or wired. Handle shell component according to one of the preceding claims, wherein a cover can be attached to the recess (126) of the first surface in order to enclose the sensor module (130) inside the handle shell component for protection against external influences. Handle shell component according to one of the preceding claims, characterized in that the sensor module (130) is glued, screwed or clicked into the recess. Handle shell component according to one of the preceding claims, characterized in that the sensor module (130) is designed as an encapsulated sensor module as an ESD protective measure. Handle shell component according to one of the preceding claims, characterized in that the sensor module comprises a battery, the battery being rechargeable by means of a USB port and/or by induction. Handle shell component according to one of the preceding claims, characterized in that the recess (126) is coordinated with the sensor module (130) in such a way that a center of gravity of the recess (126) and the sensor module (130) of the handle shell component (120) inserted therein corresponds to a center of gravity of the Handle shell component without the recess corresponds. Table tennis racket (101) having a two-sided racket blade (105) with an area for attaching rubber coverings (110, 115) and a grip area extending elongately from the racket blade; two rubber coverings (110, 115), which are detachably connected to the club blade (105), two grip shell components (120, 121), a first grip shell component (120) with a first side of the grip area and a second grip shell component with a second side of the grip area is releasably connected (121), characterized in that at least one of the handle shell components (120) is designed as a handle shell component according to one of Claims 1 - 7 is trained. Application designed to analyze and evaluate a playing behavior of a table tennis player and/or a material condition of a sports racket, in particular a table tennis racket. Motion detection system (100) comprising a table tennis bat (101). Claim 8 , which is trained to collect data that is suitable for characterizing the gaming behavior of a player and to send the data wirelessly and/or wired; an application Claim 9 implemented on a user terminal, the user terminal being set up to receive the data and the application being programmed to analyze and evaluate the playing behavior and/or a material condition of the table tennis bat. Method for producing the handle shell component (120) according to one of Claims 1 - 7 comprising the following steps: providing a handle shell body (125), in particular made in one piece from wood; introducing a sectional recess into the handle shell body (125), the recess being at least the size of a sensor module; Gluing, clicking or screwing the sensor module into the recess.

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