Connection device for attaching to a punch bag

Description

[0001] The present invention belongs to the field of equipment for the physical exercise of athletes and relates more particularly to punching bags used for training in combat sports.

[0002] The invention relates to an accessory in the form of a cover for a traditional punching bag, to which flexible sheet pressure sensors are attached, connected to an electronic system. This system allows a user to obtain quantified data on the blows absorbed by the bag. Another object of the invention is a punching bag equipped with this device. Also claimed is a training aid system for combat sports, comprising one or more connected and interactive punching bags.

[0003] The practices referred to as boxing fall under the category of striking combat sports, focusing on striking techniques. Examples include English boxing, American boxing, French boxing (often called "savate"), kickboxing, Chinese women's boxing, and mixed martial arts (MMA) and pankration, which combine striking and grappling techniques. Karate and taekwondo, practiced as sports, are also striking disciplines. These numerous variations are defined by their target areas (face, torso, legs, etc.) and by the weapons used: depending on the discipline, strikes can be delivered with the upper limbs (fist, elbow) or the lower limbs (foot, knee).

[0004] In general, during sporting events and competitions, two fighters face off in a duel and attempt to neutralize their opponent with effective and precise strikes. It is clear that learning these technical skills and physical training cannot be done in real-life conditions, but relies heavily on exercises that include striking non-human targets. In this respect, punching bags (or heavy bags) play an important role in athletes' training.

[0005] Punching bags, whether static or dynamic, typically consist of a cylindrical body filled with a shock-absorbing material, which is then covered with a thick leather or textile cover designed to withstand repeated blows. The bag can be freestanding, in which case it is mounted on a heavy base to ensure stability, with or without a hinge. Alternatively, the bag can be suspended by a chain from a pole, with integrated weights to ensure stability during powerful strikes.

[0006] Professional and amateur athletes looking to improve their skills and refine their technique using punching bags want to be able to control the effectiveness of their strikes in terms of accuracy, power, and speed. To achieve this, it's helpful to be able to view training sessions in real time and / or analyze them afterward using objective data. This allows them to quantify inherently subjective sensations and adjust their training sessions accordingly to improve performance.

[0007] Several systems have been proposed to meet this need, in which sensors are placed inside a punching bag. For example, document FR 2757410 describes a punching bag with an integrated curved plate that supports deformation detectors, such as strain gauges, on its inner surface. The detectors are connected to an electronic system capable of transmitting the signals emitted by the impacts and recording them in a computer system's memory. After the session, the athlete can review the collected data, such as the amplitude, position, and number of strikes delivered to the target. This system requires prior calibration.

[0008] WO2013 / 040416 describes equipment comprising a panel on which pads are placed as targets to be struck according to a predetermined sequence. Arms extending from either side of the panel are connected to the pads and can also be struck. Each pad is connected to an impact detector consisting of an accelerometer and a signal processing unit. The data is collected by a control unit and sent to a screen for analysis of the training session. Although presented as being intended for boxing and martial arts training, this equipment is actually a reflex game. It is not suitable for training according to the rules of boxing.

[0009] CA 2945293 describes a cylindrical punching bag equipped with multiple impact detectors, such as accelerometers, mounted along a support occupying the bag's longitudinal axis. Different zones representing an opponent are color-coded on the bag's outer surface to guide the strikes. The signals generated by the impacts are processed by an electronic analysis system and relayed wirelessly to a user-readable interface, allowing the user to access session parameters (number and power of strikes).

[0010] All this training equipment is equipped with a set of sensors that can be networked, and an electronic system that transmits the data collected by the sensors to a central unit. The sensors can be of various types, such as those mentioned in WO2013 / 192344: gyroscopes, accelerometers, and magnetic field detectors. Piezoelectric cables or sheets, embedded within the target structure, can also be used. The electronic systems of this equipment transmit the data obtained to a central unit (processor or microprocessor) which is configured to provide the user with an objective report of their session. Numerous software applications are also described for processing various data parameters and displaying the results.

[0011] With the development of communication technologies, numerous user functionalities are now available. These include the ability to compare multiple training sessions, consult training programs, or customize them as desired. Furthermore, interactive systems have emerged. In this case, the equipment itself can receive instructions from the central unit, emitting a light or sound signal when the time between strikes is too long, the impact is insufficient, or for other reasons. For example, WO2013 / 192344 describes an interactive training system in which sensors attached to a punching bag can collect data on strikes delivered to the target, including impact force, direction, and reaction times.The system can be configured to emit successive light signals at the points on the bag where the user must strike, according to a training sequence pre-recorded in the central unit. Document WO2020 / 005829 B1 relates to an interactive training system comprising multiple striking zones with integrated force sensors, mounted on a flexible casing designed to be wrapped around a punching bag.

[0012] The connected punching bags described above are designed as integrated devices, meaning the sensors are incorporated into the bag's structure. Furthermore, the sensors are positioned centrally or at least away from the bag's outer surface. This design presents several drawbacks. The sensor elements are inherently fragile, especially given the repeated impacts they are subjected to, while the bag's body is designed to withstand the rigors of boxing. Even with thick padding, the sensor elements are therefore susceptible to premature failure. Additionally, the electrical cables can become disconnected. Repairing them requires accessing the internal structure, which is difficult, if not impossible, without damaging the bag.Therefore, a malfunction in the data detection and transmission components can necessitate replacing the entire punching bag. Furthermore, the accuracy of impact detection by sensors embedded within a layer of padding and beneath an outer casing is problematic.

[0013] Another drawback is that it is not possible to change the location of the sensors according to the target areas of the strikes which may differ from one discipline to another, or according to the pattern of the exercises to be carried out.

[0014] Furthermore, acquiring such connected punching bags requires a significant investment. Indeed, an athlete who wants to receive a training report or be guided by an interactive system must purchase a complete punching bag, integrating the sensors and associated electronic system. Boxing clubs already own conventional punching bags and cannot afford to acquire new, considerably more expensive equipment.

[0015] There is therefore a need for training equipment for striking sports, allowing practitioners to benefit from the features of the connected punching bags mentioned above, which is robust, easy to maintain and inexpensive.

[0016] In response to this need, the applicant developed an accessory designed to fit over a traditional punching bag. This accessory incorporates all the necessary components to detect impacts on the bag and transmit the generated signals to a processor. The accessory is a cover shaped similarly to the bag it is designed to fit and consists of two overlapping flexible sleeves between which flexible sensor elements are attached. The cover can be easily slipped onto and removed from the punching bag for maintenance or repair of defective components. The cover and its flexible sensors conform perfectly to the shape of the punching bag without hindering the user.

[0017] Thus, one objective of the present invention is to provide a device that transforms a standard punching bag into a connected punching bag capable of detecting blows, analyzing various significant parameters, and transmitting the results to a processor. Another objective is to have equipment that is convenient to install, remove, and maintain. A device that can be easily exchanged or repaired is particularly desirable. A further objective of the present invention is to allow the user or their coach to access quantified data and parameters not only after each session but also in real time during exercise, through a visible or audible display.Another objective of the present invention is to provide an accessory capable of emitting visible or audible signals to guide the user during their exercises, and consequently, capable of receiving commands from the central unit to provide training assistance. A further objective of the invention is to provide an accessory with a size suitable for all types of punching bags, that is practical to use, durable, and affordable for everyone.

[0018] The disadvantages mentioned above are resolved and the objectives above are achieved thanks to the present invention relating to equipment comprising a removable, connected and interactive punching bag cover.

[0019] More specifically, according to a first aspect, the present invention relates to a device for equipping a punching bag for training in striking combat sports, comprising a cylindrical body covered with a casing and means for fixing it in a vertical position, the device comprising: a cover suitable for containing said punching bag, the cover being formed of two superimposed sheaths, one internal, the other external, and comprising detachable means for holding said punching bag, a plurality of target elements fixed between the two sheaths, each comprising at least one pressure sensor electrically connected to an electronic control unit, said electronic control unit comprising means for receiving data from each of the sensors and means for processing said data, an external system comprising means for analyzing data received from the electronic control unit, means for recording, storing and editing said data and the results of said analyses, means for communication between the electronic control unit and the external system, means for supplying power to the electronic control unit and the external system.

[0020] The inventive device comprises, firstly, a cover designed to fit a known type of punching bag, the overall cylindrical body of which is covered by a protective outer casing. The cover according to the invention, which is independent of the bag it is intended to fit and designed to be slipped over the outer casing of the punching bag without altering the latter in any way, also has a cylindrical (or tubular) shape and dimensions defining an internal volume capable of containing said punching bag. This shape is generally achieved when the cover contains the punching bag, as it is preferably flexible due to the materials from which it is made, as will be seen later. This flexibility means that it can deform plastically with minimal effort, for example, under its own weight, like a piece of fabric.

[0021] The cover has detachable fastenings for the punching bag, making it removable. This means it can be easily and quickly attached to the bag and removed as needed, without the need for any tools. It is open at one or both ends. Conveniently, one end is closed by a circular base attached to the tubular sleeve, while the other end has an adjustable tie or other fastening to securely attach the cover to the punching bag. This tie or other fastening is also detachable, allowing the cover to be removed instantly at will.

[0022] Thus, according to a feature of the device which is the subject of the invention, the cover comprises a tubular body with a diameter substantially identical to the diameter of the punching bag for which it is intended, at least one end of which is open and equipped with a means of retaining the cover detachable from the punching bag.

[0023] The cover consists of two layers, one inner and one outer, inserted one inside the other to create a "double skin." The inner layer is in contact with the outer shell of the punching bag, while the outer layer, which covers everything, is visible to the user. Advantageously, the layers are made of flexible and slightly elastic materials to perfectly conform to the shape of the punching bag. For example, woven or knitted textiles (jersey) can be used, or materials commonly employed in furniture such as natural or synthetic leathers (imitation leather, coated canvas, etc.). These materials are also chosen for their adequate resistance to the intended use. The two layers can be made of a single material or two, or even more, depending on practical or aesthetic criteria that a professional will be able to select.

[0024] Thus, according to another characteristic of the device which is the subject of the invention, the sheaths of the cover are made of materials, identical or different, chosen from woven textiles, knitted textiles, natural leathers or synthetic leathers.

[0025] The two overlapping sheaths form two layers of material between which the target elements of the device are placed. These elements are called targets because they occupy specific locations around the perimeter of the punching bag that the user will attempt to hit with precise and powerful blows. Each target element includes at least one pressure sensor electrically connected to an electronic control unit. When an effective blow strikes a sensor, an electrical signal is generated and transmitted to the electronic control unit, which records the relevant data, including the position of the sensor, the time, and other parameters. It goes without saying that the target elements, a minimum of three, are arranged in appropriate locations depending on the type of boxing practiced. Preferably, the cover according to the invention comprises at least five target elements, and even more preferably at least eight.

[0026] The target elements are designed to be fixed between the two sheaths. To achieve this, flexible sheet structures were designed, incorporating pressure sensors also made of flexible sheets. By flexible sheets, we mean a structure with a thin profile relative to its surface area, which can deform plastically with minimal force, for example, under its own weight (as opposed to a flexible element, which has pronounced elastic properties). In other words, the target elements have a thickness and flexibility that allow them to be slid between the two sheaths without creating any surface irregularities or hard areas that could inconvenience or injure users.

[0027] Furthermore, and particularly preferably, the invention implements pressure sensors of the type providing a response proportional to the stress experienced, so that a quantified information is obtained on the power of the blow delivered.

[0028] Thus, according to the invention, the device can comprise at least three target elements structured as flexible sheets, each comprising a pressure sensor capable of delivering an electrical signal proportional to the pressure exerted on it.

[0029] A preferred embodiment of the invention involves using pressure sensors formed from a film of electrically conductive material sensitive to pressure, said film being placed between two conductive sheets electrically connected to the electronic control unit. The conductive film may be of the type whose resistance varies inversely with the pressure to which it is subjected, such as a polyolefin film (in particular polypropylene or polyethylene) impregnated with carbon black, which renders it electrically conductive, such as a film known under the trade names Velostat™ or Linqstat™. The conductive sheets may be made from a thin film or fabric, of conductive material or incorporating conductive materials. For example, metallic films (aluminum or other), possibly reinforced with a flexible mesh, may be used.A composite fabric of metallic microfibers coated with a polymer can also be used. Composite sheets made from woven copper and nickel wires embedded in a thin layer of polyester are particularly well-suited for combining the required qualities of flexibility and strength. This type of material is commonly used in the medical, aeronautical, and space sectors to absorb magnetic radiation from devices.

[0030] The conductive sheets are in contact with both sides of the pressure-sensitive conductive film, across their entire surface. Each sheet is connected to the electronic control unit by a wire providing the electrical connection. The electronic control unit will then receive the data from each sensor (including pressure measurements, location, timing and intervals, etc.) and perform initial processing, as will be explained in detail later.

[0031] The pressure sensors included in the target elements can have different shapes and sizes. It is understandable that, for manufacturing reasons, regular and symmetrical shapes are preferred. Furthermore, the dimensions are calibrated in relation to the size of the weapon in use (usually the fist, foot, elbow, or knee).

[0032] Thus, according to an advantageous embodiment of the invention, the pressure sensors have a round or square surface ranging from 25 cm² to 100 cm². Preferably, the surface is between 50 cm² and 80 cm², and according to a particular embodiment, it is on the order of 64 cm².

[0033] As mentioned above, the target elements are placed between the two sheaths, in suitable locations. It is advantageous to attach them to the inner sheath, with the outer sheath then serving as protection for the assembly, using a method that holds them firmly in place but also allows for the removal of one or more of them when they need to be repaired or replaced.

[0034] Therefore, in accordance with the invention, the target elements are secured to the inner sheath at a distance from each other, by a fastening means chosen from a seam, a hook and loop fastener, an adhesive, a weld, or a combination thereof.

[0035] Since the practitioner must strike the various target elements to trigger a pressure measurement, and these elements are concealed within the cover, visually perceptible markers should be provided. In one embodiment, targets, such as shapes or the body of an opponent, can simply be printed on the outer sleeve. Care must be taken to align these targets with the underlying target elements.

[0036] In a particularly interesting variant of the device that is the subject of the invention, it can emit light signals to dynamically guide the user during their exercises. The principle is to indicate where on the punching bag and when to strike, by illuminating light signals according to a given sequence.

[0037] To achieve this, the target elements of the device that is the subject of the invention may each include at least one light emitter electrically connected to the electronic control unit. It is then possible to illuminate these emitters according to a predetermined pattern, in order to encourage the user to strike certain areas of the punching bag.

[0038] In a preferred embodiment, the light emitters are light-emitting diodes (LEDs) or optical fiber segments, which can be activated by the external system via the electronic control box.

[0039] The excitation pattern of the light emitters can be controlled from the external system via the electronic control unit, according to a predefined sequence and rate, which can be selected by the user. In practice, the external system can be configured to offer a choice of pre-recorded sequences, or to generate random sequences. During these guided exercises, it can be beneficial to compare the pattern of a sequence with the data received from the pressure sensors, in a synchronized and localized manner. This requires that the control means for the light emitters be coupled with the means for processing the data from the pressure sensors.

[0040] Therefore, the external system of the device according to the invention advantageously includes means for controlling the light emitters of each of the target elements, coupled with means for processing the data emanating from the pressure sensors.

[0041] Due to the aggressive and prolonged use for which the inventive device is intended, it is recommended to provide optimal protection for the target and connection elements without compromising its ergonomics or complicating disassembly, which allows for rapid intervention in case of malfunction. This is one reason why it is recommended to cover the target elements with a sheet, for example, made of polymer, which will be transparent if light emitters are used. Similarly, it is recommended to provide tubes through which the electrical wires running between the electronic control unit and the target elements can slide. These tubes can be made of fabric, plastic, or other materials and are held against the inner sheath of the cover. They can be attached directly to the inner sheath, for example, by sewing, gluing, stapling, or securing them with a tie.The tubes, each originating from a target element, converge towards the electronic control unit, thus playing both a guiding and protective role.

[0042] Thus, according to a preferred feature of the invention, the target elements are covered with a protective pouch and, for each of them, the pressure sensors, and where applicable said at least one light emitter, are connected to the electronic control unit by electrical wires which are slipped into a tube held pressed against the inner sheath of the cover.

[0043] According to another preferred feature of the invention, the outer sleeve of the cover is provided with a compartment suitable for housing the electronic control unit, the tubes for retaining the electrical wires being arranged to converge towards said compartment. This compartment can be judiciously placed inside the outer sleeve so as to be located at the rear of the punching bag.

[0044] With the aim of enabling quick assembly and disassembly of the device, detachable electrical connection means are preferred in the context of the invention. Therefore, according to one embodiment, the electronic control unit is equipped with at least one connection pin for the pressure sensors and, if present, the light emitters. The cables connected to the pressure sensors and those connected to the light emitters can be joined into a single bundle connected by a single pin, or into two bundles connected by two separate pins. The electronic control unit can be connected to the mains power supply, but advantageously also has its own power supply, such as a rechargeable battery. Furthermore, the connection to the external system can be established wirelessly.

[0045] Thus, according to a preferred feature of the invention, the electronic control unit can be equipped with one or more of the following means: i) at least one connection pin to the pressure sensors and light emitters if they exist; ii) an electronic module for wireless communication with the external system; and iii) a means of autonomous power supply.

[0046] As previously explained, the training assistance device according to the invention derives its full utility from its connection to an external system that processes, transmits, and records various data, and that it is also capable of controlling the electronic control unit and executing various functions and programs. The system is considered external because it is physically separate from the other components of the device (namely, primarily the cover and the electronic control unit). However, it is connected to these components via communication methods, which may be electrical in the case of a wired connection, but are most often wireless, using electromagnetic waves. This type of equipment belongs to the category of so-called "connected" devices.It includes an easy-to-access, user-friendly and ergonomic user interface, usually a screen and keyboard, or a touchscreen.

[0047] Thus, according to a preferred embodiment of the device of the invention, the external system is a central processing unit of a laptop computer, or a mobile phone with an embedded microprocessor (smartphone type), or a web platform, comprising wireless communication means (for example, via Bluetooth or Wi-Fi technology) with the electronic control unit, and which is configured to run applications dedicated to assisting training in striking combat sports. A wide variety of applications can be designed and implemented as needed, according to the practitioners' level, their progress objectives, the type of sport, their personal preferences, or other factors.

[0048] Specifically, when using the device that is the subject of the invention, the external system can be configured to run one or more applications to assist training in striking combat sports. These can be chosen from: An application reporting the power, speed, and precision parameters of each impact on one of the pressure sensors during a session; an application reporting the variations of said parameters between sessions spaced out over time; an application activating the light emitters according to different sequences; an application comparing the activation sequences of the light emitters and the power, speed, and precision parameters of the impacts on the corresponding pressure sensors during a session; an application for comparing performance with a champion, other practitioners, or oneself at different times; an application providing training programs.

[0049] As you might have guessed, the device described above is suitable for most existing punching bag models. All the components are detachable and interchangeable; only the cover needs to be adapted to the size of the bag being equipped. A conventional punching bag can therefore be quickly and easily transformed into a connected punching bag simply by equipping it with the device described above, with minimal bulk. After-sales service and any necessary repairs are greatly simplified, especially since the electronic control unit or the cover (or even a single target component) can be replaced separately. A dedicated maintenance function can also be included, allowing for the collection of self-monitoring data from the punching bags and ensuring prompt maintenance.

[0050] Therefore, according to a second aspect, the present invention relates to a punching bag for training in striking combat sports comprising a cylindrical body covered with a casing and means for fixing in a vertical position, which bag is equipped with a device as described above.

[0051] The punching bag according to the invention may include means for suspending it from a support or means for securing it to the ground. As is known, the suspension means may be chains, ropes, or other materials, equipped with hooks that engage with a ring attached to a support (ceiling, beam, frame, etc.). For ground support, various types of feet exist, weighted or fixed, with joints, etc. The cover of the device will be adapted to take into account the geometry of the bag in question, with the target elements in particular being positioned appropriately. The means for securing the cover to the punching bag will also be modified accordingly. A person skilled in the art will be able to make these adjustments without difficulty.

[0052] A standard punching bag equipped with a device based on this invention becomes literally interactive. It is autonomous, customizable, and fun. Furthermore, its low cost makes it accessible to a wide range of practitioners.

[0053] According to a third aspect, the present invention relates to an interconnected training aid for striking combat sports, comprising at least two punching bags, each equipped with a device as described above. The external systems of said devices include means for remote connection and synchronization between them. It is specified that the term "interconnected" expresses the fact that the various elements composing the system have the option of being connected to each other, i.e., communicating, or of not using this option.

[0054] This setup allows for interactive and customized individual training sessions as well as group sessions. It also enables the control of multiple devices using a single, centralized external system to which each user can connect. Again, the simplicity and low investment required by the system allow individual athletes and / or clubs to equip themselves for this purpose.

[0055] Thus, according to one implementation variant, the interconnected set of training assistance for striking combat sports comprises at least two punching bags, each equipped with a device according to the invention, the electronic management boxes of said devices being equipped with means of communication with a single centralized external system.

[0056] According to an advantageous feature, the external system(s) of said interconnected training assistance systems are configured to run one or more interactive training assistance applications for striking combat sports. The interactive applications may be selected, for example, from: applications for joint training of several users, side by side or from different locations; applications for competition in precision, speed, power; applications for competition in sequences of events.

[0057] The present invention will be better understood and relevant details will become apparent in the light of the description which will be given, in relation to the attached figures. [ Fig.1 [ ] is a general view of a punching bag equipped with a device according to the invention. ] Fig.2 [ ] is a view of the internal sheath of a device according to the invention. ] Fig.3 ] is a representation of the internal sheath of a device according to the invention, comprising a target element. EXEMPLE 1

[0058] According to the illustrated embodiment, the training assistance device for striking combat sports is shown on the [ Fig.1 equipping a punching bag 100. The cover 1, or at least its outer sleeve 22, which covers the cylindrical body of the punching bag 100, can be seen. The upper part of the punching bag 100 is visible. The bag has means for fixing it in a vertical position, by suspending it from a beam or other support 200, using three chains 101 attached to a ring 102 of the carabiner type or similar, which is easily removable.

[0059] The cover 1 comprises a tubular body 13 and a circular base 14 closing its lower end (orientation described in the use illustrated here). The upper end is open but is fitted with a cord 15 passing through a casing 16, allowing the cover 1 to be held in place by tightening and released instantly at will. The cover 1 is formed of two superimposed sheaths, an inner one 11 and an outer one 12, shown respectively in [ Fig.1 ] And [ Fig.2 The sheaths 11 and 12 are made of stretch jersey, with the inner sheath 11 conveniently light-colored, which facilitates pattern making and assembly of the various components during manufacturing, and the outer sheath 12 being uniformly black. This sheath 12 may feature a colored print, such as a logo or other distinctive mark, or an aesthetically pleasing design. Another reason for choosing a uniform, dark color is to achieve a sharp contrast with a light signal emitted beneath the outer sheath 12 and visible through the fabric's weave, as will be described later.

[0060] The two sleeves 11 and 12 are threaded one inside the other, so that the cover 1 has two superimposed layers. They are joined together by stitching or hook and loop fasteners, snaps, or other means, ensuring their correct relative positioning. The tubular body 13 of the cover 1 has a diameter comparable to that of the punching bag 100, so that it conforms to its shape and remains pressed against it thanks to the elasticity of the fabric used. One of the sleeves has a compartment in which the electronic control unit 3 will be placed. Practically speaking, the compartment is a pocket sewn to the top and back of the outer sleeve 12.

[0061] The device comprises a plurality of target elements 2 fixed to the inner sheath 11 shown in the [ Fig.2 (without the outer sheath 12 for clarity). The target elements 2 are structured as flexible sheets, i.e., thin and conforming to the shape of the bag against which they are applied once the device is installed. In other words, they are placed between the two sheaths without creating any noticeable extra thickness for the user, especially since they are held in place by curving against the inner sheath 11, simply by the pressure of the outer sheath 12. Eight target elements are arranged here at a distance from each other, in three groups whose positions correspond to the body parts of an opponent (head, torso, legs).

[0062] Each target element 2 includes a pressure sensor 2. The pressure sensors themselves, structured as flexible sheets, are made using a film 22 of pressure-sensitive electrically conductive material sandwiched between two conductive sheets 23 that are electrically connected to the electronic control unit 3. The conductive film 22 is made of Linqstat™ film, whose resistance varies inversely with the pressure applied to it. In other words, an impact on this material will cause a decrease in the resistance of the film 22, and the current flowing between the two metallic sheets 23 will be greater the more forceful the impact. Thus, the generated signal is proportional to the pressure applied and provides quantitative information about the impacts made by the user. In this example, squares of Linqstat™ film 22, 0.12 mm thick and 10 cm on each side, were used.The two conductive sheets 23 are made of conductive fabric of copper and nickel microfibers coated with polyester, marketed under the brand name Nasafes™, with a thickness of 0.10 mm and a side length of 8 cm. They are centered and sewn above and below the film 22, in contact with it. Each sheet 23 is connected to the electronic control unit by an electrical cable 26 for one, 27 for the other, the end of which is stripped for a few centimeters and sewn with a zigzag stitch 28 directly onto the fabric, preferably in a corner of the sheets 23, so that the connection receives as few impacts as possible. The pressure sensors 2, once assembled, can be slipped into a plastic pouch 25, for example made of flexible polyvinyl chloride, and fixed by sewing onto the inner sheath 11 by a few series of stitches judiciously distributed, for example along the edge of the film 22.

[0063] The two electrical wires 26 and 27 are connected to the electronic control unit 3, which they reach by running along the surface of the inner sheath 11 within a protective and guiding tube 6. The tube 6, made of fabric or flexible plastic, is held against the inner sheath 11 by a continuous or intermittent seam. A tube 6 is provided at the start of each target element 2, and all converge at the electronic control unit 3. They are conveniently joined in a pin 31, allowing the bundle of electrical wires 26 and 27 to be connected and disconnected in a single action to the electronic control unit 3 via a port 32 designed to receive this pin.

[0064] The electronic control unit 3 includes means for receiving data from each of the sensors 21 (raw data). It is equipped with an electronic board containing an analog-to-analog converter, so that the electrical signal received from a sensor, proportional to the pressure exerted, is transformed into quantitative data. The electronic control unit 3 also includes means for processing the received data. This processing is generally a relatively simple preprocessing, which may consist, in particular, of associating each pressure value with the reference of the relevant sensor, with a time referenced relative to an initial time or relative to the time of receipt of the previous pressure value on any of the sensors or on the same sensor.

[0065] The electronic control unit 3 also includes means for transmitting raw data and / or preprocessing results to a more sophisticated external system via a wireless communication module. This external system can receive and record the raw or preprocessed data transmitted by the electronic control unit 3. It is also capable of providing complex data analysis, comparing the data with previously recorded reference data, and performing a range of other operations useful to users.

[0066] The electronic control unit 3 also incorporates a power supply, such as a rechargeable battery with a capacity of several hours, preferably at least 8 hours and even better at least 12 hours. A charge indicator is visible either on the unit itself or on a display screen of the external system. A low battery warning signal, visual or audible, can also be installed. The rechargeable battery can be charged in situ, or it can be a removable battery that can be replaced or recharged outside the unit. EXEMPLE 2

[0067] The device shown in Example 1 can be implemented in a variant where the user is guided through their training sessions by light signals appearing on the punching bag. In this example, each of the target elements 2 includes a light emitter 24, which is electrically connected to the electronic control unit 3. Specifically, light-emitting diodes (LEDs) are used, chosen for their sufficient power to illuminate through the outer sheath 12. They are attached to the center of one of the sheets 23 of the target elements 2 by stitching or other means, and are covered with a small transparent cap 30 to protect them from impacts and also to protect the outer sheath 12. They are electrically connected to the electronic control unit 3 by cables 29, which run from each target element 2 through the tubes 6 described above.The cables 29 are bundled together, which is connected via a connecting pin 33 cooperating with a port 34 provided on the electronic management box 3.

[0068] The lights are switched on from the external system according to a sequence that can be selected by the user from a database of pre-recorded sequences via an interface, for example, a touchscreen. The color of the emitted light can be changed using a suitable application.

[0069] The LED control means are coupled with the means for processing data from the pressure sensors, and the external system is configured to compare the parameters of the light sequence and the received pressure data (raw and pre-processed data) to perform session analysis, with functions such as: follower function (speed, power), timing (speed, endurance), predefined sequences (technical exercises).

[0070] The punching bag then becomes literally interactive. EXEMPLE 3

[0071] The external system is designed to offer, in conjunction with the connected cover described in the previous examples, a range of functionalities intended for users, from amateur to professional athletes, their coaches, or boxing gym instructors. Users access these functionalities and the mobile applications installed on the external system (compatible with Apple and Android) via a screen and control buttons (physical or touch keyboard). The external system can be, in particular, a web platform, a smartphone, a computer, or a tablet.

[0072] The data collected by the sensors is processed by translating this data into numerical values ​​measuring three parameters: power, speed, and accuracy. Subsequent analysis is performed by an application configured to quantify: The power and precision of an impact; The amount of effort in a session; The speed of execution of a sequence; The effectiveness of a technique; The quality of a training session; Progress over the course of training.

[0073] The data and analysis results are recorded, which offers the possibility of comparing performance from one session or season to another.

[0074] The external system can be configured to offer different modes and settings to choose from, including: monitoring of proper operation of sensors and LEDs during connection and status report to the external unit; automatic standby; retrieval of values ​​from sensors and sending in real time to the smartphone connected via Bluetooth; execution of an LED lighting sequence, controlled from the smartphone.

[0075] In one alternative implementation, the colors of the target LEDs can be configured via a program sent from a smartphone. In this case, RGB LEDs are attached to the target elements (with the corresponding wiring). The advantage of this arrangement is that a predefined color indicates which weapon should strike the target.

[0076] Many actions can be controlled from the external system via a mobile application that can be downloaded to a smartphone, such as: user / web platform synchronization (avatar, statistics, preferences); authorization to use via a digital key provided by the web platform; creation of user profile; management of program sequences; management of break times between two sequences; recording of a sequence performed on the punching bag and sending it to the web platform; option to operate in offline mode; subscription to training programs. EXEMPLE 4

[0077] An interconnected system consisting of several punching bags, each equipped with a cover 1 and a connected control box 3, is configured to operate in an interactive network, thanks to a web platform offering numerous possibilities, including: create your user profile; subscribe to training and coaching programs; participate in challenges; create programs (split on three possible criteria: type of strikes, color code indicating the body weapon to use on a target, time between 2 strikes); share created programs; view your statistics.

[0078] This list is not exhaustive. Many other features can be planned and added to expand the range of possibilities offered. The invention is defined by the attached claims.

Claims

1. Device intended to be fitted in a punching bag (100) for training in striking combat sports comprising a cylindrical body covered with an envelope and means for attaching in a vertical position, the device being characterized in that it comprises: - a cover (1) having a tubular shape formed by two superimposed sheaths, one internal (11) and the other external (12), and dimensions defining an internal volume, which can contain said punching bag, said cover comprising one end closed by a circular bottom and one open end provided with an adjustable fastening means configured to secure said cover to said punching bag, said cover (1) comprising means for releasably fastening to said punching bag, - a plurality of target elements (2) attached between the two sheaths (11, 12), each comprising at least one pressure sensor (21) electrically connected to an electronic control unit (3), said target elements (2) being covered by a protective pocket (25), said pressure sensors (21) being connected to the electronic control box by electrical wires (26) inserted into a tube (6) held against the inner sheath (11) of the cover (1), - the electronic control unit (3) comprising means for receiving data coming from each of the sensors (21) and the means for processing said data, - an external system comprising means for analyzing the data received from the electronic control unit (3), means for recording, storing and outputting said data and results of said analyses, - means for communicating between said electronic control unit and the external system, - means for electrically powering said electronic control unit and the external system.

2. Device according to claim 1, characterized in that the sheaths (11, 12) of the cover (1) are made of identical or different materials, chosen from among woven textiles, knitted textiles, natural leathers or synthetic leathers.

3. Device according to one of the preceding claims, characterized in that it comprises at least three target elements (2) structured in flexible sheets, each comprising a pressure sensor (21) which can deliver an electrical signal proportional to the pressure exerted on it.

4. Device according to the preceding claim, characterized in that the pressure sensors (21) are formed of an electrically conductive material film (22), the resistance of which varies in inverse proportion of the pressure that it undergoes, said film being placed between two conductive sheets (23) electrically connected to the electronic control unit.

5. Device according to the preceding claim, characterized in that the pressure sensors (21) have a round or square surface area going from 25 cm2 to 100 cm2.

6. Device according to one of the preceding claims, characterized in that the target elements (2) are secured to the inner sheath (11) at a distance from one another, by an attachment means chosen from among a seam, a welding, an adhesive, a scratch band, or a combination of these.

7. Device according to any one of the preceding claims, characterized in that the target elements (2) further comprise each at least one light emitter (24) electrically connected to the electronic control unit (3).

8. Device according to the preceding claim, characterized in that the light emitters (24) are light-emitting diodes or optical fiber segments, which can be activated by the external system via the electronic control unit (3).

9. Device according to one of claims 7 or 8, characterized in that the external system comprises means for commanding the light emitters (24) of each of the target elements (2), coupled with the means for processing the data coming from the pressure sensors (21).

10. Device according to any one of the preceding claims, characterized in that the outer sheath (12) of the cover (1) is provided with a compartment which can contain the electronic control unit (3).

11. Device according to one of the preceding claims, characterized in that the electronic control unit (3) is provided with i) at least one pin for connecting to the pressure sensors (21) and to the light emitters (25) if there are any; ii) a wireless communication electronic module with the external system; and iii) an autonomous powering means.

12. Device according to any one of the preceding claims, characterized in that the external system is a central unit of a laptop, or a mobile phone provided with an embedded microprocessor, or a web platform, comprising means for wirelessly communicating with the electronic control unit (3), and which is configured to execute applications dedicated to assisting in striking combat sports training.

13. Device according to the preceding claim, characterized in that the external system is configured to execute one or more applications for assisting in striking combat sports training, chosen from among: - an application considering parameters of power - speed - accuracy of each impact on one of the pressure sensors during a session; - an application considering variations of said parameters between sessions staggered over time; - an application activating the light emitters according to different sequences; - an application comparing the activation sequences of the light emitters and the parameters of power, speed and accuracy of impacts on the corresponding pressure sensors during a session; - an application for comparing performances with a champion, other people taking part or with themselves at different times; - application providing training programs.