Load bearing force measuring device for lower limb movement

Abstract

The utility model relates to the technical field of lower limb rehabilitation tools, in particular to a weight measuring device for lower limb movement, which comprises a sole pad, the sole pad comprises an upper pad layer, a support plate is mounted at the bottom of the upper pad layer, a plurality of grooves are arranged on the surface of the top of the support plate, and a pressure sensor is mounted in each groove. The top of the pressure sensor makes contact with the upper cushion layer, the bottom of the pressure sensor is fixed to the inner bottom wall of the groove, and a plurality of fixing pieces are installed at the bottom of the supporting plate. According to the weight measuring device for the lower limb movement, the pressure sensors are reasonably arranged in the grooves of the supporting plate, so that the pressure distribution and magnitude of the foot in the movement can be comprehensively and accurately captured, and the measuring accuracy is effectively improved. The pressure sensor is in close contact with the upper cushion layer, so that the sensor can accurately sense the change of the pressure applied by the foot in real time. And the upper cushion layer adopts the combined design of the stress plate and the soft cushion, so that the measurement accuracy is ensured, and good comfort is provided.

Description

Technical Field

[0001] This utility model relates to the field of lower limb rehabilitation tools, specifically to a weight-bearing force measuring device for lower limb activities. Background Technology

[0002] In fields such as lower limb rehabilitation, sports training, and daily health monitoring, accurately measuring the weight-bearing force (i.e., the pressure distribution and magnitude on the feet) of the lower limbs during activities is of great significance for assessing lower limb functional status, developing personalized rehabilitation or training plans, and monitoring health status. Traditional weight-bearing force measurement methods often rely on specialized medical equipment, requiring the patient or subject to maintain a specific posture during the measurement process. This is not only complex to operate but also limits the freedom and convenience of measurement.

[0003] Furthermore, while some existing portable measuring devices have improved the convenience of measurement to some extent, they still have shortcomings in terms of measurement accuracy, comfort, and stability. For example, some devices may experience large fluctuations in measurement data due to unreasonable sensor placement or unstable fixing methods, affecting the reliability of the results; other devices may fail to provide sufficient comfort while ensuring measurement accuracy due to materials that are too hard or too soft. Utility Model Content

[0004] The purpose of this invention is to provide a weight-bearing force measuring device for lower limb activities, in order to solve the problems mentioned in the background art, such as the large fluctuations in measurement data caused by unreasonable sensor arrangement or unstable fixing method, which affects the reliability of the results; and the fact that some other devices may not be able to provide sufficient comfort while ensuring measurement accuracy due to materials that are too hard or too soft.

[0005] To achieve the above objectives, this utility model provides a weight-bearing force measuring device for lower limb activities, including a foot pad, the foot pad including an upper pad layer, a support plate installed at the bottom of the upper pad layer, a plurality of grooves provided on the top surface of the support plate, a pressure sensor installed in each groove, the top of the pressure sensor contacting the upper pad layer, the bottom of the pressure sensor being fixed to the inner bottom wall of the groove, and a plurality of fixing members installed at the bottom of the support plate.

[0006] Preferably, a toe limiting mesh is installed at the front end of the foot pad, and a heel limiting piece is installed at the rear end of the foot pad.

[0007] Preferably, the fastener includes a textured hook and loop fastener and a spiked hook and loop fastener. The top of the textured hook and loop fastener is fitted with an upper adhesive, and the bottom of the spiked hook and loop fastener is fitted with a lower adhesive. The bottom of the textured hook and loop fastener and the top of the spiked hook and loop fastener are bonded to each other. The lower adhesive is used to bond and fix to the inner sole of the shoe, and the top of the upper adhesive is bonded and fixed to the bottom of the support plate.

[0008] Preferably, the foot pad is secured to the foot with straps.

[0009] Preferably, the upper padding layer includes a load-bearing plate, and a soft pad is provided on the top of the load-bearing plate.

[0010] Preferably, the bottom of the cushion is provided with several protrusions, and the top of the force-bearing plate is provided with several slots, and the protrusions engage with the corresponding slots.

[0011] Preferably, the cushion is made of sponge material and the force plate is made of silicone material.

[0012] Preferably, the pressure sensor is equipped with a wireless transmission module at its bottom, through which the pressure sensor transmits signals to an external system.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In this lower limb activity load-bearing force measurement device, pressure sensors are strategically arranged within multiple grooves in the support plate to comprehensively and accurately capture the pressure distribution and magnitude of the foot during activity, effectively improving measurement accuracy. The close contact between the pressure sensors and the upper padding layer ensures that the sensors can perceive changes in pressure applied by the foot in real time and accurately.

[0015] The upper padding layer employs a combination of a support plate and a soft pad, ensuring both measurement accuracy and comfort, making the subject feel more natural and comfortable during the measurement process. The protrusions at the bottom of the soft pad engage with the slots at the top of the support plate, and the fasteners utilize Velcro and adhesive fastening methods, all of which enhance the stability of the device and prevent measurement errors caused by movement or detachment during the measurement process.

[0016] The device is strapped to the foot, making it easy to operate and secure, and it is not limited by the measurement posture, thus improving the freedom and convenience of measurement. The inclusion of a wireless transmission module enables wireless signal transmission between the pressure sensor and external systems, further simplifying the measurement process and enhancing the device's practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the foot pad structure in this utility model;

[0019] Figure 3 This is a schematic diagram of the upper padding layer in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the fixing component in this utility model;

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Foot pad; 11. Upper padding layer; 111. Pressure plate; 112. Soft pad; 113. Slot; 114. Protrusion; 12. Support plate; 121. Groove; 13. Pressure sensor; 131. Wireless transmission module; 14. Fastener; 141. Loose-knit Velcro; 142. Spiked Velcro; 143. Lower adhesive; 144. Upper adhesive; 2. Straps; 3. Toe limiting mesh; 4. Heel limiting plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides a device for measuring the load-bearing force of lower limb activities, such as... Figures 1-4 As shown, the device includes a foot pad 1, which comprises an upper pad layer 11. A support plate 12 is mounted on the bottom of the upper pad layer 11. Multiple grooves 121 are provided on the top surface of the support plate 12. A pressure sensor 13 is installed in each groove 121. The top of the pressure sensor 13 contacts the upper pad layer 11, and the bottom of the pressure sensor 13 is fixed to the inner bottom wall of the groove 121. Multiple fasteners 14 are mounted on the bottom of the support plate 12.

[0025] In use, the upper pad 11 of the foot pad 1 is combined with the support plate 12, and pressure sensors 13 are installed in each groove 121 on the top surface of the support plate 12. This ensures that the top of the pressure sensor 13 is in close contact with the upper pad 11, while the bottom is firmly fixed to the inner wall of the groove 121. This structural design ensures that the pressure sensor 13 can accurately and in real time sense and transmit changes in the load force on the foot during activity. Meanwhile, the fixing member 14 at the bottom of the support plate 12 further enhances the stability and reliability of the device, making the entire measurement process more accurate and reliable. In summary, the structural design of this device significantly improves the accuracy and stability of lower limb activity load force measurement.

[0026] In this embodiment, a toe limiting net 3 is installed at the front end of the foot pad 1, and a heel limiting piece 4 is installed at the rear end of the foot pad 1. The design of the toe limiting net 3 and the heel limiting piece 4 effectively restricts the forward and backward movement of the foot during activities, ensuring that the foot pad 1 can stably fit the foot, thereby improving the accuracy and reliability of load force measurement.

[0027] Specifically, the fastener 14 includes a loop fastener 141 and a spiked fastener 142. An upper adhesive 144 is attached to the top of the loop fastener 141, and a lower adhesive 143 is attached to the bottom of the spiked fastener 142. The bottom of the loop fastener 141 and the top of the spiked fastener 142 are bonded together. The lower adhesive 143 is used to bond and fix the footpad 1 to the insole of the shoe, and the top of the upper adhesive 144 is bonded and fixed to the bottom of the support plate 12. The fastener 14 uses a combination of hook and loop fasteners and adhesive, which facilitates quick fixing and removal of the footpad 1 from the insole of the shoe while ensuring a secure fixation. The bonding between the loop fastener 141 and the spiked fastener 142, as well as the bonding effect of the upper adhesive 144 and the lower adhesive 143, together ensure the stability of the footpad 1 during activity.

[0028] Furthermore, the foot pad 1 is secured to the foot via straps 2. The design of straps 2 provides a simple and effective fixation method, allowing the foot pad 1 to fit snugly against the foot and prevent it from falling off or shifting due to movement, thereby ensuring the continuity and accuracy of load measurement.

[0029] Furthermore, the upper pad 11 includes a force-bearing plate 111, and a soft pad 112 is provided on the top of the force-bearing plate 111. The upper pad 11 adopts a combination design of force-bearing plate 111 and soft pad 112, which not only ensures the accuracy of measurement, but also provides good comfort.

[0030] Furthermore, the bottom of the soft pad 112 is provided with several protrusions 114, and the top of the force plate 111 is provided with several slots 113. The protrusions 114 engage with the corresponding slots 113, and the top of the pressure sensor 13 contacts the bottom of the force plate 111. The engaging design of the protrusions 114 and the slots 113 enhances the connection stability between the soft pad 112 and the force plate 111, preventing the soft pad 112 from falling off or shifting during movement, thereby ensuring the accuracy and continuity of the measurement.

[0031] Furthermore, the soft pad 112 is made of sponge material, and the pressure plate 111 is made of silicone material. The choice of sponge and silicone materials ensures both the comfort and breathability of the soft pad 112, as well as the elasticity and durability of the pressure plate 111. The combination of these two materials allows the foot pad 1 to provide good comfort while accurately and stably transmitting pressure.

[0032] Furthermore, a wireless transmission module 131 is installed at the bottom of the pressure sensor 13, through which the pressure sensor 13 transmits signals to an external system. The design of the wireless transmission module 131 enables wireless signal transmission between the pressure sensor 13 and the external system, simplifying the measurement process and improving the convenience and real-time performance of the measurement. Simultaneously, wireless transmission avoids the interference and limitations that may arise from wired connections, making the measurement process more free and flexible. The wireless transmission module 131 acts as a wireless signal transmitter, transmitting the signals collected by the pressure sensor 13 to an external monitoring system, which continuously monitors the load force data based on the collected signals.

[0033] In use, the lower limb movement load-bearing force measuring device of this utility model first attaches the foot pad 1 to the inner sole of the shoe through the mutual bonding of the hook and loop fasteners 141 and the hook and loop fasteners 142, the bonding of the lower adhesive 143 to the inner sole of the shoe, and the bonding of the upper adhesive 144 to the support plate 12. A toe limiting net 3 is installed at the front end of the foot pad 1, and a heel limiting piece 4 is installed at the rear end to restrict the forward and backward movement of the foot during activity, ensuring that the foot pad 1 is stably fitted to the foot. Finally, the foot pad 1 is further secured to the foot with straps 2, providing additional fixing force to prevent it from falling off or shifting during activity.

[0034] When the foot applies pressure during activity, the pressure plate 111 in the upper pad 11 first senses the pressure and transmits it to the pressure sensor 13, which is in close contact with it. The pressure sensor 13 accurately and in real time senses the pressure change and converts it into an electrical signal.

[0035] A wireless transmission module 131 is installed at the bottom of the pressure sensor 13, through which electrical signals are transmitted wirelessly to an external system. After receiving the signal, the external system processes and analyzes it to obtain data on the changes in the load on the foot during activity.

[0036] Finally, it should be noted that the electronic components in the pressure sensor 13, wireless transmission module 131, etc. in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between each electrical component in the above working principle to complete the electrical connection. They are all technologies known in the art.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A weight-bearing force measuring device for lower limb activity, comprising a foot pad (1), characterized in that: The foot pad (1) includes an upper pad layer (11), and a support plate (12) is installed at the bottom of the upper pad layer (11). The top surface of the support plate (12) is provided with a plurality of grooves (121). A pressure sensor (13) is installed in each groove (121). The top of the pressure sensor (13) is in contact with the upper pad layer (11), and the bottom of the pressure sensor (13) is fixed on the inner bottom wall of the groove (121). A plurality of fasteners (14) are installed at the bottom of the support plate (12).

2. The weight-bearing force measuring device for lower limb activity according to claim 1, characterized in that: The front end of the foot pad (1) is equipped with a toe limiting net (3), and the rear end of the foot pad (1) is equipped with a heel limiting piece (4).

3. The weight-bearing force measuring device for lower limb activity according to claim 1, characterized in that: The fastener (14) includes a hook and loop fastener (141) and a hook and loop fastener (142). The top of the hook and loop fastener (141) is fitted with an upper adhesive (144), and the bottom of the hook and loop fastener (142) is fitted with a lower adhesive (143). The bottom of the hook and loop fastener (141) and the top of the hook and loop fastener (142) are bonded together. The lower adhesive (143) is used to bond and fix to the inner sole of the shoe. The top of the upper adhesive (144) is bonded and fixed to the bottom of the support plate (12).

4. The weight-bearing force measuring device for lower limb activity according to claim 1, characterized in that: The foot pad (1) is tied to the foot by straps (2).

5. The weight-bearing force measuring device for lower limb activity according to claim 1, characterized in that: The upper pad (11) includes a force-bearing plate (111), and a soft pad (112) is provided on the top of the force-bearing plate (111).

6. The weight-bearing force measuring device for lower limb activity according to claim 5, characterized in that: The bottom of the cushion (112) is provided with several protrusions (114), and the top of the force plate (111) is provided with several slots (113). The protrusions (114) engage with the corresponding slots (113).

7. The weight-bearing force measuring device for lower limb activity according to claim 5, characterized in that: The cushion (112) is made of sponge material, and the force plate (111) is made of silicone material.

8. The weight-bearing force measuring device for lower limb activity according to claim 1, characterized in that: The pressure sensor (13) is provided with a wireless transmission module (131) at its bottom, and the pressure sensor (13) transmits signals to an external system through the wireless transmission module (131).

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