Reaction force measuring plate and reaction force measuring system

Abstract

The invention relates to a reaction force measuring plate (1) for detecting the ground reaction force distribution over the ground contact surface of the foot of a hoofed animal or the foot of a human when they are treading on the ground, comprising a carrier plate (3) having a first, upper surface (3a) facing away from the ground during use and an opposite second lower surface (3b) facing the ground, a plurality of flat force measurement sensors (5) fixed in position on the first, upper surface (3a) of the carrier plate (3), multiple elastic force transmission studs (7) which are fixed to the free surfaces of the force measurement sensors (5), and at least one rigid load distribution plate (13) which is arranged parallel to the carrier plate (3) and on the elastic force transmission studs (7) facing away from the carrier plate (3) and which faces away from the ground, characterized in that a, preferably elastic, force transmission surface element (11) encloses the force measurement sensors (5) and the carrier plate (3) at least in sections laterally and from the side facing the ground, wherein the force transmission studs (7) are fixed in position on the force transmission surface element (11) facing away from the first, upper surface (3a) of the carrier plate (3) and corresponding to the force measurement sensors (5), wherein the free, lower surface of the force transmission surface element (11) forms the underside of the reaction force measuring plate (1) facing the ground and in contact with the ground during use.

Description

[0001] 202403251 1

[0002] Description

[0003] Reaction force measuring plate and reaction force measuring system

[0004] The invention relates to a reaction force measuring plate for recording the ground reaction force distribution across the ground contact area of ​​the foot of a hoofed animal or the foot of a person when it steps onto the ground and to a reaction force measuring system with such a reaction force measuring plate.

[0005] For the gait and health analysis of a horse or other hoofed animal (e.g., camel), it is desirable to record the reaction forces generated when the animal strikes the ground not just at a single point, but with a certain resolution across the impact area of ​​the hoof. The measured values ​​should allow conclusions to be drawn about the animal's state of health, e.g., regarding lameness or overloading of the gait.

[0006] While there are numerous solutions for corresponding tasks in the fields of medical diagnostics, training status analysis, and rehabilitation in humans, the availability of suitable systems for hoofed animals is limited. There is one commercially available product from the company Tekscan, as well as systems with a similar purpose, but these are based on measuring accelerations rather than reaction forces.

[0007] From GB 2 482 192 B it is known to attach force sensors for such purposes to a horseshoe and to store their signals locally and / or transmit them via a wireless transmitter to a remote receiving and evaluation station. 202403251 2

[0008] According to DE 10 2011 016 344 A1, force sensors are integrated into an elastomer body for a specific purpose. The elastomer body, which is intended to be inserted into a hoof boot, is designed to enable the use of commercially available resistive force sensors, with their limited force measurement range, for reaction force analysis in horses with their relatively high ground pressure.

[0009] US patent 2020 / 319044 A1 describes another system for the area-resolved measurement of reaction forces on the hooves of a hoofed animal, which transmits the sensor signals via a wireless transmitter to a remote evaluation unit. This system has a complex construction consisting of a base plate and a bottom plate, which are precisely aligned relative to each other. Between these plates are several force application cylinders and a plurality of resistive force sensors, as well as a microprocessor unit, a communication unit, and a battery to power the components. The function of the "force application cylinders" is not explained in the patent, nor is the method of their attachment to the hoof.

[0010] DE 102021 211 795 A1 describes a reaction force measuring plate for recording the ground reaction force distribution across the ground contact area of ​​the foot of a hoofed animal or a human foot when it strikes the ground, comprising a rigid support plate with a first surface facing the ground during use and a second surface facing the hoof or foot, a plurality of planar force measuring sensors fixed in position to the first surface of the support plate, and several, in particular a plurality corresponding to the plurality of force measuring sensors, elastic force transmission studs fixed to the free surfaces of the force measuring sensors. 202403251 3

[0011] A disadvantage of the known methods for measuring the force of a hoofed animal's or a human's foot when it strikes the ground, i.e., when in contact with the ground, is that only force distributions can be measured, but not total forces, since force bypasses occur in addition to the discrete sensor positions.

[0012] A disadvantage of using individual force transmission studs per force measuring sensor in the reaction force measuring plate of DE 10 2021 211 795 A1 is that even a slight misalignment between the force transmission stud and the force measuring sensor during operation changes the characteristic or calibration curve of the force measuring sensor (measured value vs. applied force). This can result in significant inaccuracies in the measured force.

[0013] DE 102023203 352 A1 describes a reaction force measuring plate for recording the ground reaction force distribution across the ground contact area of ​​the foot of a hoofed animal or the foot of a person when it enters the ground, comprising a, preferably rigid, support plate with a first surface facing the ground in use and a second surface facing the ground opposite, a plurality of planar force measuring sensors fixed in position on the first surface of the support plate, several, in particular a plurality corresponding to the plurality of force measuring sensors, of elastic force transmission studs fixed to the free surfaces of the force measuring sensors, and at least, preferably exactly, a rigid load distribution plate which is arranged parallel to the support plate and away from the support plate on the elastic force transmission studs and facing the ground, or vice versa.

[0014] A disadvantage in each case is the comparatively high number of individual parts. 202403251 4

[0015] A further disadvantage is the comparatively complex installation of the sensors in the shoe or hoof boot.

[0016] A further disadvantage is the fixing and / or sealing of the sensors and the load distribution and protection plate within the hoof boot. Consequently, it is also disadvantageous that dirt can get between the sensor carrier plate and the load distribution and protection plate during use, which can impair its function and / or sensor force detection. This can be reduced by regular cleaning, but this can limit usage and mean additional effort for the user.

[0017] One object of the present invention is to improve the possibilities for measuring the force exerted on the foot of a hoofed animal or a human foot when it strikes the ground. In particular, a sensor plate, preferably compact, with discrete sensor positions and force application into these positions is to be created, resulting in a stable and robust sensor characteristic. Additionally or alternatively, force transmission without a force bypass circuit is to be implemented to enable the measurement of absolute forces and to minimize potential errors in the measured force distribution. Additionally or alternatively, the design of the reaction force measuring plate or of a hoof boot or boot with an integrated reaction force measuring plate is to be improved and, in particular, made more compact, cost-effective, and / or more robust. In any case, this should be achieved as simply, cost-effectively, space-savingly, and / or weight-saving as possible.At least an alternative to the known options should be created.

[0018] The object of the invention is achieved by a reaction force measuring plate and by a reaction force measuring system with the features of the independent claims. Advantageous embodiments are described in the dependent claims. 202403251 5

[0019] The present invention thus relates to a reaction force measuring plate for recording the ground reaction force distribution across the ground contact area of ​​the foot of a hoofed animal or the foot of a person when it enters the ground, comprising a, preferably rigid, support plate with a first, upper surface facing away from the ground in use and a second, lower surface facing the ground opposite, a plurality of planar force measuring sensors fixed in a position-fixed manner to the first, upper surface of the support plate, several, in particular a plurality of, elastic force transmission studs corresponding to the plurality of force measuring sensors, which are fixed to the free surfaces of the force measuring sensors, and at least, preferably exactly, a rigid load distribution plate, which is arranged parallel to the support plate and facing away from the support plate on the elastic force transmission studs and facing away from the ground.

[0020] The ground represents a substrate which can, in principle, be of any composition or made of any material.

[0021] The reaction force measuring plate according to the invention is characterized in that a force transmission surface element, preferably elastic, encloses the force measuring sensors and the carrier plate at least partially, preferably completely, laterally and from the side facing the ground, wherein the force transmission studs of the first, upper surface of the carrier plate are fixed to the force transmission surface element in a position-fixed manner corresponding to the force measuring sensors and facing away from the force measuring sensors, wherein the free, lower surface of the force transmission surface element forms the underside of the reaction force measuring plate facing the ground and in contact with the ground during use.

[0022] Thus, the free, lower surface of the force transmission surface element forms the contact surface of the reaction force measuring plate towards the ground and is located at 202403251 6

[0023] Use, preferably directly, in contact with the ground. Preferably, in this case, the free, lower surface of the force transmission surface element can have a profile as the underside or as the contact surface of the reaction force measuring plate in order to improve ground contact.

[0024] Thus, the reaction force measuring plate according to the invention is designed to be used directly without a hoof boot of a hoofed animal or without a shoe of a human; that is, the force transmission surface element of the reaction force measuring plate according to the invention forms at least the underside and thus the contact surface of the reaction force measuring plate itself. Therefore, the hoof boot or shoe can be omitted and thus saved. This can save costs and resources. Furthermore, the design can be flatter, more compact, and / or lighter.

[0025] Therefore, no force distribution plate is required, unlike with conventional reaction force measuring plates of this type. A one-piece finished product can also be particularly easy to handle. Furthermore, very low production costs can be achieved due to the limited number of manufacturing steps and components. However, a force distribution plate can still be used in this case, which can increase the accuracy of the force measurement and / or, in a removable version, reduce wear on the product.

[0026] Alternatively, the reaction force measuring plate according to the invention can also be used as an insert inside a shoe or the like, in particular inside a hoof boot, which can improve the protection of the reaction force measuring plate. In this case, a profile can instead be provided on the underside or on the contact surface of the shoe.

[0027] In any case, the force transmission surface element encloses or surrounds at least the carrier plate and the force measuring sensors arranged on it and oriented upwards (see 202403251 7), at least partially from the sides and from above. Doing this in sections can create spaces for cable connections and the like, and save material. Completely enclosing the element, preferably except for one cable connection, can improve or optimize the protection of the enclosed elements, and especially the force measuring sensors, particularly from dirt, moisture, and the like. This can also enable implementation for standalone use, i.e., without a hoof boot or shoe, etc.

[0028] The force transmission studs and the underlying force measuring sensors are aligned upwards along the vertical axis towards the hoof when in use, and are thus located on the opposite side of the force transmission surface element and are oriented in the opposite direction relative to its underside.

[0029] The reaction force measuring plate according to the invention can have a support plate that is essentially both rigid and incompressible (but optionally elastically flexible). Such a reaction force measuring plate has a simple design and is therefore inexpensive to manufacture, robust in practical use, and easy to handle. It also enables sufficiently high resolution measurement of reaction forces across the hoof surface with minimal force interference and therefore high accuracy. Furthermore, its design is flat and lightweight, making it not only easy to use but also easy to transport.

[0030] The present invention is further based on the finding that, by means of the force transmission studs, which are each arranged directly opposite one of the force measuring sensors, the ground contact forces can be transmitted to the respective force sensors. In addition, by means of a force transmission surface element, the 202403251 8

[0031] The force transmission studs are positioned relative to each other and to the force measuring sensors, ensuring that any offset between the force transmission studs and the force measuring sensor during operation is avoided or at least sufficiently reduced to prevent or sufficiently reduce any change or influence on the characteristics or calibration curve in order to measure the forces with sufficient accuracy.

[0032] The force transmission surface element can also be referred to as a pressure-guiding element. In any case, the force transmission surface element can be designed as a thin, planar plane, which can preferably be bonded to a carrier film by means of a material bond, in particular by vulcanization, as will be described in more detail below.

[0033] Furthermore, the force transmission surface element can also serve as a thin protective layer and, for this purpose, be designed in such a way as to cover the force measuring sensors or their sensor carrier film at least largely and thereby protect them.

[0034] Preferably, at least five force sensors can be used. Preferably, at least seven force sensors can be used, and particularly preferably exactly seven, which can be arranged along the perimeter. In any case, the force sensors can be arranged approximately equally spaced from each other in the circumferential direction. This can enable representative measurement of the force values ​​while keeping costs down.

[0035] The rigid load distribution plate spans several to all elastic force transmission studs, and thus also the respective force sensors and the distances between them. This allows force transmission to occur at each force sensor without force bypass, which can improve the quality of the force measurements. 202403251 9

[0036] Preferably, the rigid load distribution plate can be made of a material with very high strength and stiffness combined with good maximum elongation. Polyamide with an additional reinforcing layer is preferably used for this purpose. Particularly preferably, the rigid load distribution plate can be implemented as an organosheet made of polyamide with glass fiber reinforcement.

[0037] According to one aspect of the invention, the load distribution plate covers the force transmission studs from above, at least substantially, and preferably completely. This can improve the force transmission to the force transmission studs and thus also to the force measuring sensors underneath. This can also improve the protection of the force transmission studs.

[0038] According to a further aspect of the invention, the load distribution plate is designed to be in direct contact with the underside of the hoof of the hoofed animal or the foot of a person during use. This could represent a concrete implementation possibility.

[0039] According to a further aspect of the invention, the load distribution plate has a rigid support facing the force transmission surface element and an elastic protective layer facing away from the force transmission surface element. This can improve the downward force transmission towards the force transmission studs and simultaneously provide elastic protection upwards.

[0040] According to a further aspect of the invention, the elastic protective layer of the load distribution plate is designed as a raised bearing edge at its periphery. This bearing edge represents a thickening or reinforcement of the force transmission surface element, which can make it more robust and durable in this area. When used on the hoof of a hoofed animal, the bearing edge can correspond to the shape of a horseshoe, the main contact surface of the hoofed animal, in order to fulfill its function precisely there. This can improve the contact there, particularly with the hoof, by providing more or a thicker material in that area.

[0041] According to a further aspect of the invention, the elastic protective layer of the load distribution plate is formed integrally with the force transmission surface element. This can represent a concrete implementation possibility. This can simplify manufacturing, for example by vulcanizing an elastomeric material as an elastic protective layer.

[0042] According to a further aspect of the invention, the gap between the force transmission surface element and the load distribution plate is filled, at least partially, and preferably completely, with an elastic filler material. This can improve force transmission in that area. Filling the gap can also prevent the ingress of moisture and dirt, thus improving the protection of the force sensors.

[0043] According to another aspect of the invention, the elastic filler is arranged between the elastic force transmission studs and the load distribution plate, which can represent a concrete implementation possibility. However, in this configuration, the elasticity of the filler lies in the force flow towards the force measuring sensors and can therefore influence the force measurement. On the other hand, this can simplify the implementation, as the elastic filler can be applied or inserted more easily.

[0044] Alternatively, despite the elastic filler, the force transmission studs are in direct contact with the load distribution plate, so that the elastic filler is arranged around the force transmission studs. This can be a practical way to keep the elasticity of the filler away from the force flow to the force sensors and thus improve force measurement. On the other hand, this can complicate implementation, as the contact area between the load distribution plate and the force transmission studs must remain free of the elastic filler.

[0045] According to a further aspect of the invention, the force transmission surface element has several, preferably one-piece, side wall sections designed to partially enclose the foot of the hoofed animal or person during use. Thus, the side wall sections, which for this purpose can extend essentially along the vertical axis and therefore perpendicular to the tread surface of the hoofed animal or person, can laterally enclose or grip the foot to be held in place. This can be reinforced or improved by additional means such as straps and the like.

[0046] According to a further aspect of the invention, the reaction force measuring plate is designed to be used solely on the foot of the hoofed animal or human. In this way, the use of an additional hoof boot or the like, or a shoe or footwear, can be avoided and thus saved. This can reduce the manufacturing costs of the reaction force measuring plate according to the invention.

[0047] According to a further aspect of the invention, the free, lower surface of the force transmission surface element forms a sole profile. This can improve grip on the ground. The function of the sole profile can also be taken over by the force transmission surface element, which can reduce effort and thus also costs.

[0048] According to a further aspect of the invention, the force transmission lugs and / or the force transmission surface element are elastically designed from an elastomeric material, a thermoplastic material, or a thermoset material. The use of an elastomeric material can effect elastic force transmission. The hardness of the elastomer or elastomeric material of the force transmission lugs and / or the force transmission surface element can, in particular, be between 50 ShA and 95 ShA, preferably in the range of 85 ShA. Polyurethane (PU), for example, can be used as the thermoset material.

[0049] According to a further aspect of the invention, the power transmission lugs are formed integrally with the power transmission surface element. Thus, the power transmission lugs and the power transmission surface element are formed as a single unit. This can be achieved with the same material or with different materials, the latter potentially increasing both the manufacturing effort and the design possibilities.

[0050] According to a further aspect of the invention, the force transmission studs are designed separately from the force transmission surface element. This allows the carrier plate, including sensors and force transmission studs, to be manufactured separately from the force transmission surface element, which can then be joined together, even in a non-destructive manner.

[0051] If, preferably, the force transmission surface element encloses the load distribution plate, which can be done by overmolding, the carrier plate including sensors and force transmission studs can be completely enclosed, which may prevent non-destructive separation, but may improve protection against dirt, moisture and the like.

[0052] According to a further aspect of the invention, at least, preferably exactly, one elastic force transmission stud is fixed to the free, upper surface of the force transmission surface element directly opposite one of the force measurement sensors for each force measuring sensor. This can be the 202403251 13

[0053] To facilitate power transmission and to avoid or reduce power bypasses.

[0054] According to a further aspect of the invention, the force transmission surface element is bonded to the force measuring sensors or a sensor carrier film facing away from the force transmission studs. This can represent a connection method that allows for a direct connection between the force measuring sensors and the force transmission surface element. If the force measuring sensors are arranged on a sensor carrier film, in particular printed on it, as will be described in more detail below, the force transmission surface element can also cover and protect the sensor carrier film.

[0055] According to a further aspect of the invention, the force transmission surface element is vulcanized to a carrier film facing away from the force transmission studs, and the carrier film is bonded to the force measuring sensors or a sensor carrier film. Thus, the carrier film creates a surface to improve the adhesive effect against the force measuring sensors or a sensor carrier film. The carrier film is preferably made of a material chemically similar to the sensor carrier film to enable or promote a material-bonded connection. In any case, the carrier film is preferably made of a thermoplastic or elastomeric material (e.g., PET, TPE, NR, EPDM) that can be material-bonded to the sensor carrier film, preferably by a vulcanization process or an injection molding process.

[0056] Vulcanizing the force transmission surface element onto the carrier film is particularly feasible when the sensor with the pressure-guiding element is manufactured separately from the sole. If the sole and pressure-guiding element are formed as a single unit, the shaping of the pressure-guiding element can be done directly on the 202403251 14

[0057] Sensor detection takes place. For this, a potting process with low temperatures and pressures may be more suitable than a vulcanization process.

[0058] According to a further aspect of the invention, the support plate has the shape of a closed horseshoe, ring, U, or polygon, in particular with a recess in the central region. This allows for adaptation to use with various hoofed animals or other vertebrates (including humans).

[0059] According to a further aspect of the invention, the force measuring sensors, together with associated sensor signal lines and optionally power supply lines, are implemented on a continuous sensor carrier film, which is fixed, in particular, to the first surface of the carrier plate. This can simplify the implementation and manufacturing.

[0060] According to another aspect of the invention, the force sensors or the sensor carrier film are bonded to the carrier plate. This can be a simple and easily implemented design. Alternatively, the force sensors or the sensor carrier film are detachably attached to the carrier plate, in particular by being inserted into suitable guides or interlocked. It is understood that such solutions are more complex in design and potentially more prone to failure, so they are likely to be more suitable for specialized applications.

[0061] According to another aspect of the invention, the effective area of ​​the force measuring sensors is in the range of 0.5 cm². 2 and 10 cm 2 , especially 2 cm 2 and 5 cm 2 It is understood that when using a relatively large number of force sensors, and especially in configurations of the measuring plate intended for animals with a relatively small hoof or foot area, the effective area may be relatively small, whereas in configurations with a relatively small 202403251 15

[0062] The number of sensors, and for animals with a large detection area, may be closer to or even above the upper limit mentioned as preferred.

[0063] According to a further aspect of the invention, all force measuring sensors are essentially rectangular in shape and have the same geometric form and effective area. This can facilitate technologically simple and cost-effective manufacturing of the sensors and the configurability of different versions of the measuring plate.

[0064] The present invention also relates to a reaction force measuring system with a reaction force measuring plate as described above and with a wireless electronic shoe component attached to it and connected to the force measuring sensors via signal transmission, in particular according to the Bluetooth standard, as well as with a sensor signal receiving, evaluation and display device arranged remotely from the reaction force measuring plate, which comprises a wireless sensor signal receiving unit communicating with the electronic shoe component to the reaction force measuring plate.

[0065] Further aspects of the present inventions supplement or specify the reaction force measuring plate as follows:

[0066] The sensor elements can preferably be designed using pressure-sensitive resistive sensor elements, or alternatively using electroactive polymers or other capacitive or inductive sensors. The sensor elements can be configured with a single discrete sensitive area as a sensor cell or with multiple discrete sensitive areas as sensor cells.

[0067] In any case, a temperature-sensitive element, such as an NTC (Negative Temperature Coefficient Thermistor) or PTC (Positive Temperature Coefficient Thermistor), can preferably be integrated as a temperature sensor on a sensor element. Particularly preferably, the 202403251 16

[0068] Temperature sensor in the form of a long printed electrical conductor, preferably arranged in a meandering shape in the middle.

[0069] In any case, a sensor element can preferably be manufactured as printed electronics, at least partially enclosed on one or both sides with at least one first carrier film, preferably a PET film (polyethylene terephthalate).

[0070] As already mentioned, each pressure guide element can be designed with one or more pressure guide tunnels, each of which is assigned to a sensor cell and positioned accordingly on it, so that a surface-acting load is directed specifically and mainly through one or more sensor cells.

[0071] Each pressure-conducting element can preferably be made of a thermoset such as PU (polyurethane) or TPU (thermoplastic polyurethane), which is formed in direct contact with the sensor using a molding process such as casting, allowing it to chemically react. This ensures that the shape is retained and a strong chemical bond is established with the sensor. A particular advantage of this method is that the chemical reaction results in very low pressure and relatively low temperature stress on the sensor during the casting process.

[0072] Alternatively, one or each pressure-guiding element can be made of a thermoplastic such as TPE (thermoplastic elastomer), which, in molten form, is shaped in direct contact with the sensor using a molding process such as injection molding and can then solidify there, thus retaining its shape and establishing a strong chemical bond with the sensor. 202403251 17

[0073] The shape of the pressure guide ridges can preferably be oriented with a linear contact surface on the side facing away from and / or towards the sensor, preferably a linear or elongated contact surface on the side facing away from the sensor and a larger, wider contact surface in the direction of the sensor cell. This can be achieved, for example, by a trapezoidal shape.

[0074] Each pressure-guiding element can preferably be designed as a thin, planar plane with individual elevations in the form of pressure-guiding ridges, in such a size and shape that it covers the sensor element at least mostly, preferably completely, and thereby protects it.

[0075] Each pressure-guiding element can be pronounced so that it protects the sensor element, at least partially, preferably mostly or completely.

[0076] Each pressure-guiding element can be pronounced so that it covers the sensor element at least partially, preferably largely or completely, also on the reverse side of the sensor, on the side of the sensor facing away from the force-guiding elements.

[0077] Preferably, the sensor element is positioned and connected to a carrier plate with its side facing away from the pressure guide tunnel, preferably by bonding and / or welding. The carrier plate preferably consists of a thermoplastic (e.g., polyamide or TPU) with an additional reinforcing layer (e.g., glass fibers). Preferably, an organosheet made of polyamide with glass fiber fabric reinforcement is used.

[0078] Preferably, the pressure-guiding element is shaped as a sensor sole, which also extends laterally beyond the carrier plate and thus at least partially covers the front face of the carrier plate and also forms a side wall or several side wall sections, thereby creating an inner sole surface. The pressure-guiding element can also form the sole profile.

[0079] Preferably, the pressure-guiding element also extends to the side of the carrier plate facing away from the sensor, thus offering even more comprehensive protection.

[0080] The sidewall is preferably slotted and / or consists only of sections, so that the diameter of the sidewall in the upper area can be manually reduced, for example by a strap, belt, cord, wire or other fastening mechanism. This allows the shoe to be opened for putting it on and, during use, individually tightened to the wearer, which can ensure a secure fit.

[0081] Preferably, the pressure-guiding element is manufactured in a mostly flat form, and the side walls are subsequently folded up (e.g., using film hinges). This allows for a particularly cost-effective tool and a simple potting process.

[0082] For contacting purposes, the sensor element preferably has a connector outlet, which enables contact with a sensor signal processing unit, also referred to as a shoe component, that can be attached to the shoe. Preferably, a connector is crimped onto the end of the connector outlet. The sensor's connector outlet can preferably extend radially beyond the side wall and be completely enclosed by the pressure-bearing element, at least on the side facing the sensor, thus providing cable protection.

[0083] In the area of ​​the connector exit, an interface can be provided on the side panel or a section of the side panel as a mounting option for an electronic unit. This can be, for example, in the form of 202403251 19.

[0084] Through holes for e.g. screws or rivets, or through sharp contours behind for hooking.

[0085] The electronic unit or shoe component can be mounted directly or indirectly to the sensor sole. In the indirect case, a "holder" is used that at least partially extends over and protects the electronics. The holder can then be attached to one or more of the side wall sections of the pressure-guiding element using standard fastening methods.

[0086] The pressure-guiding element can enclose the sensors and, if applicable, the carrier plate at least largely on all sides and advantageously at least part of the sole, e.g. the sole profile and / or a side wall or...

[0087] Form sidewall sections of the sole. Additionally, the pressure-guiding element can also form a cable guard.

[0088] The pressure guide tunnels can be oriented in the direction away from the ground relative to the sensors and may not be in direct contact with the ground during use.

[0089] A force distribution plate is installed within the sole, preferably consisting of a rigid support and a softer protective layer. This provides additional protection for the sensor and ensures a uniform force distribution into the pressure-guiding studs.

[0090] A key advantage here is the secure fixing and sealing of the sensor plate against the shoe sole using a one-piece design. A good seal can also be achieved at the cable exit point in the area of ​​the side wall penetration. Reproducible force transmission via the force distribution plate to the sensor cells can be achieved through protected and rigidly attached force-guiding studs. 202403251 20

[0091] Alternatively, the force-guiding element can be manufactured independently of the sole and connected to the sensor. This element, together with the force distribution plate and a filler (volume-compressible and preferably at least twice as soft as the pressure-guiding material; e.g., foam), which is positioned between the force distribution plate and the sensor plate, can form a sensor sandwich. This sensor sandwich can then be molded with an elastic material to create a sole consisting of at least one sole profile and one or more sidewall sections. The sole can preferably be formed in a casting process, preferably from a thermoset (e.g., PU).

[0092] The filler prevents the sole material from running between the force distribution plate and the sensor plate. Advantageously, it extends radially beyond the edge of both the force distribution plate and the sensor plate. This allows for spring action without significant force transfer in the edge region.

[0093] The advantage in this case is that a complete seal can be achieved between the force distribution plate and the sensor plate. Furthermore, it is not necessary to remove the force distribution plate for cleaning.

[0094] In any case, the side wall or sections of the side wall can be attached to the hoof or foot with an upper material (e.g., textile, leather, etc.) (e.g., by gluing or sewing). This can improve the fit and comfort. Alternatively, the side walls could be designed to be directly attached to the hoof or foot, for example, by being able to be gathered or tightened with Velcro.

[0095] The advantages and expediencies of the invention will become apparent from the description of exemplary embodiments with reference to the figures. Of these, 202403251 shows 21.

[0096] Fig. 1 shows the structure of a reaction force measuring plate according to the invention in a perspective view from below as a section;

[0097] Fig. 2 shows a cross-section of the reaction force measuring plate according to the invention in a first embodiment in the state of use without a base;

[0098] Fig. 3 shows a cross-section of the reaction force measuring plate according to the invention in a second embodiment in the state of use without a base; and

[0099] Fig. 4 shows a side view of an electronic shoe component in the shoe component holder.

[0100] The above figures are described in Cartesian coordinates with a longitudinal axis X, a transverse axis Y perpendicular to the longitudinal axis X, and a vertical axis Z perpendicular to both the longitudinal axis X and the transverse axis Y, which corresponds to the direction of gravity. The longitudinal axis X can also be referred to as depth X, the transverse axis Y as width Y, and the vertical axis Z as height Z. The longitudinal axis X and the transverse axis Y together form the horizontal X, Y, which can also be referred to as the horizontal plane X, Y. The longitudinal axis X, the transverse axis Y, and the vertical axis Z together can also be referred to as the spatial directions X, Y, Z, or as the Cartesian spatial directions X, Y, Z.

[0101] Fig. 1 shows, in a perspective view from above, the structure of an exemplary reaction force measuring plate 1 with a closed horseshoe-shaped rigid support plate 3, which has a first, upper surface 3a as the bottom 3a and a second, lower surface 3b as the top 3b. Seven resistive force measuring sensors 5 with a uniformly rectangular base shape are attached to the first, upper surface 3a at equal intervals, cf. Fig. 2. The free surface of each of the force measuring sensors 5 points upwards in the direction of, for example, a horse's hoof and thus away from a substrate (not shown). The force measuring sensors 5 can also be referred to as force sensors 5 or force sensor elements 5.

[0102] The force sensors 5 are integrally implemented on a sensor carrier film 9, which also carries sensor signal lines as conductor tracks (not shown) for connecting each force sensor 5. The sensor carrier film 9, together with the force sensors 5 formed on it, can be manufactured using conventional printed circuit board technology, including printed electronics, which are known to those skilled in the art. The sensor carrier film 9 is applied with its back side to the first, upper surface 3a of the carrier 3. This is done by means of an adhesive or an adhesive layer, such as double-sided adhesive tape.

[0103] Furthermore, an elastic or thermoplastic force transmission surface element 11 is provided, which, like the sensor carrier film 9, corresponds approximately to the area of ​​the rigid support plate 3. The elastic force transmission surface element 11 can also be referred to as an elastic pressure-guiding element 11 or as an elastic support element 11 and is preferably made of a thermoplastic material. The elastic force transmission surface element 11 has a carrier film 15 facing the rigid support plate 3 or the sensor carrier film 9, which is bonded to the elastic force transmission surface element 11 by vulcanization and also corresponds approximately to the area of ​​the rigid support plate 3. The elastic force transmission surface element 11 is also bonded to the sensor carrier film 9 by means of the carrier film 15, a bond facilitated or achieved by the corresponding material combination.Simultaneously, the vulcanized bond between the carrier film 15 and the elastic force transmission surface element 11 allows an elastomeric material to be used for the elastic force transmission surface element 11, and yet it can still be bonded to the sensor carrier film 9 by means of the carrier film 15. 202403251 23.

[0104] Several elastomeric force transmission studs 7, which can also be referred to as elastomeric pressure guide studs 7, are formed on the elastic force transmission surface element 11. These studs point towards the horse's hoof and away from the force measuring sensors 5 and the sensor carrier film 9, respectively. Each force measuring sensor 5 is assigned exactly one force transmission stud 7, so that the force measuring sensor 5 and its force transmission stud 7 are identically formed and positioned relative to each other. This positioning is ensured by the fact that the force transmission studs 7 are integrally formed with the elastic force transmission surface element 11.

[0105] Furthermore, as shown in Figure 2, a rigid load distribution plate 13 is provided, which is arranged parallel to the support plate 3 and away from the support plate 3 on the elastic or thermoset force transmission studs 7 and is turned away from the ground, so that a distribution of the force from the horse's hoof to the force transmission studs 7 can take place.

[0106] The force measuring sensors 5 are contacted and readable via the sensor signal lines in printed form. For this purpose, a connection element 16 in the form of a plug outlet 16 is provided, which terminates in a plug 16a.

[0107] The elastic force transmission surface element 11 has an inner surface 11a, which faces the load distribution plate 13. A gap (not shown) forming between the inner surface 11a of the elastic force transmission surface element 11 and the load distribution plate 13 is filled around the force transmission studs 7 with an elastic filler material (not shown) to ensure that the force transmission between the load distribution plate 13 and the force transmission studs 7 is not disrupted, but that the gap is filled in such a way as to keep out dirt, moisture, and the like. An elastic protective layer 13b of the load distribution plate 13 is formed at its edge as a raised bearing edge 13b. 202403251 24

[0108] The force transmission surface element 11 further comprises several, for example four or five, side wall sections 11b, which are formed integrally with the rest of the force transmission surface element 11 and are designed for mounting. Three side wall sections 11b are arranged in the front area of ​​the hoof, and the fourth side wall section 11b then directly surrounds the hoof from behind.

[0109] A fifth side wall section 11b is provided on the side, which, however, essentially serves to accommodate the connector 16a. The area around the connector 16a is recessed inside this section so that it can be folded up at a different angle.

[0110] Each of the five side wall sections 11b has a hinge (not shown) to allow it to be easily and precisely folded upwards relative to the rest of the force transmission surface element 11 in order to enclose the hoof. In this position, a strap (not shown) or the like can be passed through pairs of incisions (not shown) or openings in each side wall section 11b to hold the side wall sections 11b against the hoof during use.

[0111] In the area of ​​connector 16a, the belt 18 can be guided through the side wall section. An alternative embodiment could involve connecting the side wall sections 11b with a surface material (e.g., textile, leather, etc.) (e.g., by gluing or sewing). This could potentially improve the fit and comfort.

[0112] During assembly, a shoe component 25 or a hoof component 25 can be electrically connected to connector 16a to preprocess the sensor data from the force sensors 5, for example, by filtering and / or amplifying it. The electronic hoof component 25 is essentially enclosed externally by a housing. 202403251 25

[0113] A hoof component holder 15h is formed in one piece. The hoof component holder 15h accommodates the electronic hoof component 25 along a joining direction. The hoof component holder 15h, together with the accommodated electronic hoof component 25, is then permanently connected to the side wall section 11b, which also accommodates the connector 16a, by means of screws 15k or rivets (not shown) through holder connections (not shown). This connection is made during assembly.

[0114] When using the device, the reaction force measuring plate 1 can be placed against the hoof from below, and then the side wall sections 11b can be folded up. The strap is then guided through the notches in the side wall sections 11b so that they can be pulled together to a smaller size in the upper area.

[0115] The electronic hoof component 25, see Figure 4, has four display elements 37 in the form of light guides 37 on the front housing half 25a. These elements are arranged around a horseshoe symbol, which represents the orientation of the hoof of the hoof, and are illuminated in such a way that the hoof on which the respective reaction force measuring plate 1 is used can be indicated. The electronic hoof component 25 also has an operating element 41 in the form of an on / off switch 41 for switching the electronic hoof component 25 on and off.

[0116] The electronic Huf component 25 further comprises a charging port 39 in the form of a pair of charging contacts 39, which serve to charge an electrical energy storage device (not shown) of the electronic Huf component 25. 202403251 26

[0117] According to the first embodiment shown in Figure 2, the elastic force transmission surface element 11 completely encloses the carrier plate 3, including the sensor carrier film 9 with the force measuring sensors 5, except for the connecting element 16, which extends laterally through the elastic force transmission surface element 11. As already described, the elastic force transmission surface element 11 forms the force transmission studs 7 on its upper side. The underside of the elastic force transmission surface element 11 also forms a sole profile 14. Furthermore, the lower regions of the side wall sections 11b of the elastic force transmission surface element 11 extend laterally upwards along the vertical axis Z such that the load distribution plate 13 is arranged within the elastic force transmission surface element 11.

[0118] According to the second embodiment of Figure 3, the elastic force transmission surface element 11 encloses the load distribution plate 13 from above instead of the carrier plate 3 together with the sensor carrier film 9 with the force measuring sensors 5, in that the force transmission surface element 11 extends from its side wall sections 11 b over the upper side of the load distribution plate 13 and encloses it, so that the load distribution plate 13 is fixedly and permanently, i.e. destructively separable, connected to the elastic force transmission surface element 11.

[0119] In both embodiments shown in Figures 2 and 3, the previously mentioned filler material 12 is arranged between the power transmission studs 7 and the load distribution plate 13. 202403251 27

[0120] Reference symbol list (part of the description)

[0121] X Longitudinal axis; Depth

[0122] Y transverse axis; width

[0123] Z vertical axis; height

[0124] X, Y Horizontal; horizontal plane

[0125] I Reaction force measuring plate

[0126] 3 Carrier plate

[0127] 3a first, upper surface; top

[0128] 3b second, lower surface; underside

[0129] 5 force measuring sensors; force sensors; force sensor elements

[0130] 7 (elastic or thermoset) force transmission tunnels; (elastic or thermoset) pressure control tunnels

[0131] 9 Sensor carrier film

[0132] II (elastic or thermoplastic) force transmission surface element; (elastic or thermoplastic) pressure-guiding element; (elastic or thermoplastic) support element

[0133] 11 a Inside or inner surface

[0134] 11 b Side wall sections

[0135] 12 Filler

[0136] 13 Load distribution plate; force distribution plate

[0137] 13a rigid T-beam of the load distribution plate 13

[0138] 13b elastic protective layer or bearing edge of the load distribution plate 13

[0139] 14 Sole profile

[0140] 15 carrier film

[0141] 15h shoe component holder

[0142] 15k Screw connections of the shoe component holder 15h

[0143] 16 Connection element; plug outlet

[0144] 16a plug 202403251 28

[0145] 25 electronic shoe components

[0146] 25a front housing half

[0147] 37 display elements; light guide

[0148] 39 Charging port; charging contacts 41 Control element; On / Off switch

Claims

202403251 29 Patent claims 1. Reaction force measuring plate (1) for recording the ground reaction force distribution across the ground contact area of ​​the foot of a hoofed animal or the foot of a person when it enters the ground, comprising a, preferably rigid, support plate (3) with a first, upper surface (3a) facing away from the ground during use and an opposing second, lower surface (3b) facing the ground, a plurality of planar force measuring sensors (5) fixed in position on the first, upper surface (3a) of the support plate (3), several, in particular a plurality of, elastic force transmission studs (7) corresponding to the plurality of force measuring sensors (5), which are fixed to the free surfaces of the force measuring sensors (5), and at least, preferably exactly, a rigid load distribution plate (13) which is arranged parallel to the support plate (3) and facing away from the support plate (3) on the elastic force transmission studs (7) and facing away from the ground.characterized in that a, preferably elastic, force transmission surface element (11) encloses the force measuring sensors (5) and the support plate (3) at least partially, preferably completely, laterally and from the side facing the ground, wherein the force transmission studs (7) of the first, upper surface (3a) of the support plate (3) are fixed in a positionally fixed position corresponding to the force measuring sensors (5) facing away from the force measuring sensors (5), wherein the free, lower surface of the force transmission surface element (11) forms the underside of the reaction force measuring plate (1) facing the ground and in contact with the ground during use. 202403251 30 2. Reaction force measuring plate (1) according to claim 1, wherein the load distribution plate (13) covers the force transmission studs (7) upwards at least substantially, preferably completely, in particular wherein the load distribution plate (13) is designed to be in direct contact with the underside of the foot of the hoofed animal or the foot of the human during use.

3. Reaction force measuring plate (1 ) according to claim 2, wherein the load distribution plate (13) has a rigid support facing the force transmission surface element (11 ) and an elastic protective layer (13b) facing away from the force transmission surface element (11 ).

4. Reaction force measuring plate (1 ) according to claim 3, wherein the elastic protective layer (13b) of the load distribution plate (13) is designed on the edge side as a raised support edge (13b).

5. Reaction force measuring plate (1 ) according to claim 3 or 4, wherein the elastic protective layer (13b) of the load distribution plate (13) is formed integrally with the force transmission surface element (11 ).

6. Reaction force measuring plate (1 ) according to one of the preceding claims, wherein the space between the force transmission surface element (11 ) and the load distribution plate (13) is filled at least partially, preferably completely, with an elastic filler (12).

7. Reaction force measuring plate (1) according to claim 6, wherein the elastic filler (12) is arranged between the elastic force transmission studs (7) and the load distribution plate (13) or 202403251 31 wherein the power transmission studs (7) are in direct contact with the load distribution plate (13).

8. Reaction force measuring plate (1 ) according to one of the preceding claims, wherein the force transmission surface element (11 ) has several, preferably one-piece formed, side wall sections (11b) which are designed to enclose the foot of the hoofed animal or human section by section during use.

9. Reaction force measuring plate (1) according to one of the preceding claims, wherein the reaction force measuring plate (1) is designed to be used solely on the foot of the hoofed animal or human.

10. Reaction force measuring plate (1 ) according to one of the preceding claims, wherein the free, lower surface of the force transmission surface element (11 ) forms a sole profile (14).

11. Reaction force measuring plate (1) according to one of the preceding claims, wherein the force transmission studs (7) and / or the force transmission surface element (11) are elastically designed from an elastomeric material, a thermoplastic material or a thermoset material.

12. Reaction force measuring plate (1 ) according to one of the preceding claims, wherein the force transmission studs (7) are formed integrally with the force transmission surface element (11 ).

13. Reaction force measuring plate (1 ) according to one of claims 1 to 11 , wherein the force transmission studs (7) are formed separately from the force transmission surface element (11 ), 202403251 32 wherein the force transmission surface element (11 ) preferably encloses the load distribution plate (13).

14. Reaction force measuring plate (1 ) according to one of the preceding claims, wherein at least, preferably exactly, an elastic force transmission stud (7) is fixed on the free, upper surface of the force transmission surface element (11 ) directly opposite exactly one of the force measuring sensors (5) for each force measuring sensor (5).

15. Reaction force measuring system, comprising a reaction force measuring plate (1 ) according to one of the preceding claims and a wireless electronic shoe component (25) attached thereto and connected to the force measuring sensors (5) in a signal-transmitting manner, in particular according to the Bluetooth standard, as well as a sensor signal receiving, evaluation and display device arranged remotely from the reaction force measuring plate (1 ), which comprises a wireless sensor signal receiving unit communicating with the electronic shoe component (25) to the reaction force measuring plate.

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