Human posture data acquisition device and assembly method thereof

Abstract

This invention relates to the technical field of force measurement platforms, and more particularly to a human posture data acquisition device and its assembly method, comprising a support platform and several detection pillars supported on the edge of the support platform; each detection pillar includes a platform clamp and a detection base, with a distance difference between them; the platform clamp and the detection base are connected by a decoupling structure to transfer stress, and when a vertical force is applied to the support platform, the decoupling structure absorbs additional interference stress and provides overload protection through its own flexible deformation; a connecting structure is provided between the platform clamp and the detection base to prevent the platform clamp from detaching from the detection base, and at least one end of the connecting structure forms a non-rigid connection with the platform clamp or the detection base; the detection base is used to capture stress from the support platform and passing through the decoupling structure, and the decoupling structure of this invention absorbs additional interference stress and provides overload protection through its own flexible deformation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of force platforms, in particular to a human posture data acquisition device and an assembling method thereof. BACKGROUND

[0002] A six-dimensional force platform is a platform capable of measuring forces and torques in three orthogonal directions, which has a wide range of applications in robotics, automated assembly, aerospace, etc. In practical applications, due to structural and processing errors, the six-dimensional force platform will produce inter-dimensional coupling, i.e. the input of one dimension will affect the output of other dimensions, which will seriously affect the measurement accuracy of the platform.

[0003] In the prior art patent CN114812908A, an eight-branch orthogonal parallel six-component force sensor and a structure optimization method thereof are disclosed, which includes eight force measuring branches, divided into four horizontal and four vertical, each force measuring branch is composed of a flexible hinge and a tension-compression sensor, each force measuring branch is uniformly arranged, the upper platform is used for force loading, and the lower platform is used for fixation, the upper and lower platforms and the force measuring branches are connected by bolts.

[0004] In the above technical solution, four horizontal force measuring branches and four vertical force measuring branches are provided. However, in this solution, the sensor body is greatly changed, each force measuring branch is rigidly connected between the upper and lower platforms, which causes a rigid restriction, making it difficult to decouple the forces in each direction through the mechanical structure itself. Therefore, it is still necessary to reduce the coupling crosstalk between components through an optimization algorithm and combined with subsequent software compensation, which leads to a complex overall structure and system, and excessive dependence on the algorithm for decoupling.

[0005] Therefore, it is necessary to provide a human posture data acquisition device and an assembling method thereof to solve the problems in the background art. SUMMARY

[0006] The present application aims to provide a human posture data acquisition device and an assembling method thereof, which decouples the structure through its own flexible deformation to absorb additional interference stress and provide overload protection.

[0007] To solve the above technical problems, the present application provides the following technical solution: a human posture data acquisition device, comprising a support force platform and a plurality of detection pillars supported on the edge of the support force platform; The detection pillar includes a table card and a detection base, and there is a distance difference between them; The table card and the detection base are connected by a decoupling structure to transfer stress, when a vertical force is applied to the support force platform, the decoupling structure deforms flexibly by itself, absorbs additional interference stress and provides overload protection; A connection structure is provided between the platform card and the detection base to restrict the platform card from detaching from the detection base, and at least one end of the connection structure forms a non-rigid connection with the platform card or the detection base. The detection base is used to capture stress from the supporting force table and the decoupled structure.

[0008] As a preferred embodiment of the present invention, the detection base includes a detection component, a transition component, a locking component, and a base platform; The locking component is used to fix the detection component between the transition component and the base; The transition component is used to support and limit the decoupling structure and connect to the connecting structure.

[0009] As a preferred embodiment of the present invention, the detection component includes a sensor, the transition component includes a transition block one and a transition block two, and the locking component includes a fixing screw one and a fixing screw three. The fixing screw passes through the transition block and the sensor in sequence, and fixes the two to the top of the base. The fixing screw passes through the transition block and the sensor, and there is a radial distance difference between them, which is used for the direct transmission of stress. The transition block two is mounted on top of the fixing screw one, and there is an axial gap between them; The bottom of transition block two fits against the circumference of transition block one and is locked together by several fixing screws three; The top of the second transition block has a bottom groove with a limit decoupling structure. The second transition block receives the stress from the decoupling structure and directly transmits it to the first transition block and the sensor.

[0010] As a preferred embodiment of the present invention, the tabletop clamping component includes a fixing block one and a fixing block two, which engage with each other and clamp and fix the supporting table. After the fixing block one and the fixing block two are engaged, a circular groove is formed at the bottom to accommodate and restrict the decoupling structure; The top of the fixing block is provided with a countersunk hole to accommodate the top end of the connecting structure.

[0011] As a preferred embodiment of the present invention, the connecting structure includes a central screw, one of its top ends of which is clearance-fitted with a countersunk hole, one of its bottom ends of which passes through a transition block and is threadedly connected to it, and the middle part of which passes through the countersunk hole and the decoupling structure and is clearance-fitted with it.

[0012] As a preferred embodiment of the present invention, the base has an internal threaded hole inside; The bottom of the fixing screw extends into and is threaded into the internal threaded hole, and a pair of blind holes are provided at its top for driving the fixing screw to rotate. The first fixing screw has a hollow hole through it, and the second fixing screw is movably installed at the bottom of the hole to lock the base to the foundation.

[0013] As a preferred embodiment of the present invention, the connection structure includes a screw rod and a pressure-boosting washer; The top end of the screw rod is clearance-fitted with the countersunk hole, and the screw rod passes through the countersunk hole, the decoupling structure and the second transition block and is clearance-fitted with them. The middle part of the screw rod is provided with external threads for threaded connection with the pressure gasket, and its bottom abuts against the second fixing screw. The pressure shim is located on the top of the fixing screw one and has an axial gap with the transition block two. Its bottom extends and is provided with a locking pin and a blind hole interference fit. Its edge has an arc-shaped opening that engages with the fixing screw three.

[0014] The present invention also provides an assembly method for a human posture data acquisition device, used in a human posture data acquisition device as described above, comprising the following steps: The fixing block 1 and fixing block 2 are interlocked and clamped to the edge of the support platform; By passing a fixing screw through the sensor and the transition block, and then using a special wrench to rotate the fixing screw, it is locked onto the base. By inserting the second fixing screw into the hollow hole of the first fixing screw, and then covering and fixing the second transition block onto the top of the first fixing screw, the second transition block and the first transition block are locked and fixed by the third fixing screw. The decoupling structure is placed on the bottom groove, and the support force table with the fixed platform clip is installed on the detection base, so that the circular groove is correspondingly engaged with the decoupling structure. Place the assembled data acquisition device on the foundation installation position, and use an Allen wrench to tighten the two fixing screws onto the foundation by passing through the tabletop clips and the hollow hole. Finally, the connecting structure passes through the decoupling structure to connect the platform card and the testing base, completing the overall assembly.

[0015] As a preferred embodiment of the present invention, a double-pin wrench is used to rotate and lock the screw in place by corresponding to the blind hole of the fixing screw. The connection structure uses a central screw, which is threaded to the bottom of the transition block.

[0016] As a preferred embodiment of the present invention, a pressure-increasing shim is provided and is installed on a fixing screw with an interference fit; By using the arc-shaped opening to engage the fixing screw three, the transition block one and the transition block two can be directly rotated, thereby rotating the fixing screw one to lock it onto the base. By using a screw rod as the connecting structure, it passes through the pressure washer and is threaded to it, with its bottom abutting against the second fixing screw.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are: the present invention absorbs lateral force and torque interference from the structure through the flexible setting of the decoupled structure, and when the stress is transmitted to the detection base, almost only the Fz signal is retained, reducing the interdimensional crosstalk from 10%-20% to less than 1%, and does not rely on complex algorithm correction. By decoupling the structure's own flexible characteristics, it preferentially undergoes elastic deformation when subjected to impact or overload, releasing excessive stress and preventing damage to the detection element. After the overload disappears, it automatically resets through the self-recovery capability of the elastic material, thus achieving overload protection. Attached Figure Description

[0018] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0019] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the data acquisition device of the present invention; Figure 2 This is a three-dimensional schematic diagram of the detection support column of the present invention; Figure 3 This is a cross-sectional schematic diagram of Embodiment 1 of the present invention; Figure 4 This is a cross-sectional schematic diagram of Embodiment 2 of the present invention; Figure 5 This is a cross-sectional schematic diagram of Embodiment 3 of the present invention; Figure 6 This is a partial three-dimensional cross-sectional view of the transition block 2 of the present invention; Figure 7 This is a three-dimensional schematic diagram of the bottom of the pressure-boosting pad of the present invention; Figure 8 This is a three-dimensional schematic diagram of the fixing screw of the present invention; In the diagram: 1. Detection support column; 101. Sensor; 102. Transition block one; 103. Base; 104. Fixing screw one; 105. Transition block two; 106. Hollow hole; 107. Fixing screw two; 108. Blind hole; 109. Fixing screw three; 2. Detection component; 201. Connecting transition block; 202. Double-ended threaded through hole; 3. Support platform; 301. Fixing block one; 302. Fixing block two; 4. Decoupling structure; 401. Bottom groove; 402. Circular groove; 5. Center screw; 6. Screw rod; 7. Pressure-boosting gasket; 701. Locking pin; 702. Arc-shaped opening; 8. Ring-shaped part; 9. Circular piece. Detailed Implementation

[0020] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0021] Please see Figures 1-8 The present invention provides a technical solution: a human posture data acquisition device, comprising a support platform 3 and a plurality of detection pillars 1 supported on the edge of the support platform 3; The testing support 1 includes a tabletop clamp and a testing base, and there is a distance difference between the two; The tabletop bracket and the testing base are connected by a decoupling structure 4 to transfer stress. When a vertical force is applied to the support table 3, the decoupling structure 4 absorbs additional interference stress and provides overload protection through its own flexible deformation. A connection structure is provided between the tabletop card and the detection base to prevent the tabletop card from detaching from the detection base, and at least one end of the connection structure forms a non-rigid connection with the tabletop card or the detection base. The detection base is used to capture stress from the support platform 3 and through the decoupling structure 4.

[0022] Specifically, the detection pillars 1 are distributed at the edge of the support platform 3 to sense the force applied by the support platform 3 and transmit it to the platform clamp. A decoupling structure 4 is set between the platform clamp and the detection base. The decoupling structure 4 transmits the stress applied by the support platform 3 to the detection base. The detection base is used to capture the stress transmitted from the support platform 3 and filtered by the decoupling structure 4. When Fz is applied to the support platform 3, the decoupling structure 4 absorbs the interference stress of Fx, Fy, Mx, My, and Mz through its own flexible deformation, preventing it from being transmitted to the detection base, avoiding the mixing of signals from other dimensions when detecting Fz, improving detection accuracy, and minimizing the interference of irregular loads on the sensing signal in the structure. To prevent the platform card from detaching from the testing base, a connection structure is provided between them. However, at least one end of the connection structure forms a non-rigid connection with the platform card or the testing base. This connection structure only restricts the detachment action between the platform card and the testing base and does not interfere with the transmission of stress in other dimensions. Furthermore, by using the flexible design of the decoupling structure 4, the lateral force and torque interference are absorbed from the structure. When the stress is transmitted to the detection base, almost only the Fz signal is retained, reducing the interdimensional crosstalk from 10%-20% to less than 1%, and without relying on complex algorithm correction. Furthermore, by utilizing the inherent flexibility of the decoupling structure 4, elastic deformation preferentially occurs when subjected to impact or overload, releasing excessive stress and preventing damage to the detection element. After the overload disappears, the elastic material automatically resets itself, thus achieving overload protection. Furthermore, a distance difference is set between the platform card and the detection base to provide the stress deformation space required for the decoupling structure 4, ensuring that it can fully absorb unwanted stress when subjected to interference force, play a decoupling role, and make the overload force need to be buffered by the decoupling structure 4 first, and absorb part of the overload or impact force through flexible deformation, thereby protecting the detection base and extending the life of the device. Furthermore, by setting a non-rigid connection in the connection structure, combined with the decoupling structure 4, the limiting and anti-detachment function between the platform card and the detection base is ensured, while avoiding the connection structure being completely locked during assembly, which would result in applying additional locking force to the decoupling structure 4. Preferably, the decoupling structure 4 is made of a highly elastic and fatigue-resistant material, including but not limited to thin-walled metals such as polyurethane rubber, silicone, or titanium alloy; The decoupling structure 4 is a ring structure with a ring part 8 in the middle. The inside is hollowed out. Circular plates 9 are set at the upper and lower ends of the ring part 8 to facilitate the bearing and support between the table plate and the detection base, ensuring high rigidity in the vertical direction and large flexibility in the horizontal direction.

[0023] Based on the above embodiments, the detection base includes a detection component 2, a transition component, a locking component, and a base 103; The locking component is used to fix the detection component 2 between the transition component and the base 103; The transition component is used to support and limit the decoupling structure and connect to the connecting structure.

[0024] In the first embodiment, the detection component 2 includes a strain gauge sensor, which has several double-ended threaded through holes 202 extending along its circumference; The transition assembly includes a connecting transition block 201, and the locking assembly includes a plurality of fastening screws. The fastening screws are inserted from the top of the connecting transition block 201 and locked into the double-threaded through hole 202, thereby achieving a fixed connection between the connecting transition block 201 and the sensor. Next, the fastening screw is inserted from the bottom of the base 103, so that the screw is connected to the bottom of the double-threaded through hole 202, thereby realizing the fixed connection between the base 103 and the sensor.

[0025] In this embodiment, for a sensor body with its own threaded holes, several double-ended threaded through holes 202 are provided on the sensor to facilitate the fixed connection of the transition block 201 and the base 103. The number of parts is small, which simplifies the overall structure of the detection base and further improves the assembly efficiency.

[0026] The above embodiments are designed for sensors with through holes, but not all sensors have this structure. Therefore, a second embodiment is also provided, in which the detection component 2 includes a sensor 101, the transition component includes a first transition block 102 and a second transition block 105, and the locking component includes a first fixing screw 104 and a third fixing screw 109. Fixing screw 104 passes through transition block 102 and sensor 101 in sequence, and fixes the two to the top of base 103; The fixing screw 104 passes through the transition block 102 and the sensor 101, and there is a radial distance difference between them, which is used for the direct transmission of stress. The transition block 2 105 is mounted on top of the fixing screw 104, and there is an axial gap between the two. The bottom of transition block 2 105 fits circumferentially with transition block 1 102 and is locked together by several fixing screws 3 109; The top of the second transition block 105 has a bottom groove 401 for the limit decoupling structure 4. The second transition block 105 receives the stress from the decoupling structure 4 and directly transmits it to the first transition block 102 and the sensor 101.

[0027] In this embodiment, for the sensor 101 which does not have a threaded through hole, the radial distance difference between the fixing screw 104, the transition block 102, and the sensor 101 is set to achieve direct and efficient transmission of stress from the transition block 102 to the sensor 101. Compared with direct radial contact with the screw, this embodiment minimizes the obstruction of force transmission and improves the accuracy of stress signal acquisition. Furthermore, by setting a sensor 101 with a threadless through hole, the need to open multiple through holes is avoided, which would reduce the overall strength of the sensor and prevent stress concentration due to multiple through holes, thus affecting the measurement stability and accuracy of the sensor. Furthermore, the detection base is modularized and divided into independent units such as transition block 102, sensor 101, and base 103. These units can be fixedly connected by fixing screws 104, which improves the flexibility of product component assembly and disassembly and reduces costs by eliminating the need for specially designed sensors. Preferably, the fixing screw 104 is made of high-strength wear-resistant steel, thereby further enhancing its fatigue resistance and durability.

[0028] Specifically, when the decoupling structure 4 transmits stress, it is received by the second transition block 105, transmitted through it to the first transition block 102, and finally transmitted to the sensor 101 to complete the detection. In this embodiment, by setting an axial gap between the transition block 2 105 and the fixing screw 104, the transition block 2 105 is prevented from directly transmitting the received stress to the fixing screw 104, thus dispersing the transmitted stress, reducing stress transmission interference, and improving detection accuracy. Furthermore, by circumferentially fitting the transition block 2 105 with the transition block 102, the stress is uniformly distributed when it is transferred from the decoupling structure 4 to the sensor 101, reducing the interference of stress concentration on the sensor measurement data. Preferably, the transition block 102 and the transition block 2 105 are made of 17-4PH stainless steel, which has high strength, high hardness and excellent corrosion resistance. This allows the transition block 102 and the transition block 2 105 to reduce structural deformation caused by excessive load when bearing stress for a long time, and avoid unnecessary deformation or loss in the force transmission path.

[0029] Based on the above embodiments, the tabletop clip includes a first fixing block 301 and a second fixing block 302, which engage with each other and clamp and fix the support platform 3. The support platform 3 is made of fiberglass and consists of three layers. The upper surface of the fixing block 301 is flush with the top layer surface. After the fixing block 301 and the fixing block 302 are engaged, a circular groove 402 is formed at the bottom to accommodate and restrict the decoupling structure 4; The top of the fixing block 301 is provided with a countersunk hole to accommodate the top end of the connecting structure.

[0030] In this embodiment, the circular groove 402 formed by the engagement of fixing block 1 301 and fixing block 2 302, together with the bottom groove 401, accurately limits the position of the decoupling structure 4, so that it does not shift or rotate during the force transmission process. Furthermore, the support platform 3 is fixed by fixing block 1 301 and fixing block 2 302 to form a modular connection. During subsequent assembly, this part can be directly installed on the testing base as a whole, ensuring modular assembly for subsequent on-site installation and improving installation efficiency and convenience. Preferably, fixing block 301 and fixing block 302 are made of high-strength and lightweight 7075 aluminum alloy, which has good load-bearing capacity and light weight. Preferably, both fixing block 1 301 and fixing block 2 302 are designed with a stepped structure, which facilitates snapping onto both sides of the support platform 3. Furthermore, by inserting screws into the bottom of fixing block 2 302 and fixing block 1 301 to form a locking connection, the connection is made stable and the surface of the support platform 3 is aesthetically pleasing.

[0031] The connecting structure includes a central screw 5, one of its top ends of which is clearance-fitted with the countersunk hole, and one of its bottom ends of which passes through the transition block 105 and is threadedly connected to it. Its middle part passes through the countersunk hole and the decoupling structure 4 and is clearance-fitted with it. The center of the central screw 5 is reduced in diameter to correspond to the part of the decoupling structure 4.

[0032] In this embodiment, the top of the center screw 5 is embedded in the countersunk hole at the top of the fixing block 301, forming a clearance fit. It is only used to support the force platform 3 to prevent it from detaching, thereby preventing the force platform 3 from directly transmitting stress to the detection base through the center screw 5, which cannot be decoupled through the decoupling structure 4, thus causing interference with the detection data. Furthermore, the middle part of the central screw 5 is set to be reduced in diameter at the position corresponding to the decoupling structure 4, so as to maintain a certain gap with the decoupling structure 4, so as not to interfere with the decoupling function, and to avoid rigid contact between the screw and the decoupling structure 4, which would cause stress dispersion. Furthermore, a threaded connection is made between the bottom of the center screw 5 and the transition block 2 105, thereby realizing the main fixing function of the center screw 5 and ensuring the tight connection and stability of the center screw 5.

[0033] Based on the above embodiments, the base 103 has an internal threaded hole inside; The bottom of the fixing screw 104 extends into the internal threaded hole and is threadedly connected thereto, and a pair of blind holes 108 are provided on its top for driving the fixing screw 104 to rotate. A hollow hole 106 is provided through the interior of the fixing screw 104, and a fixing screw 107 is movably provided at the bottom of the hole to lock the base 103 to the foundation.

[0034] In this embodiment, by setting fixing screw 104 and fixing screw 107, the locking of the foundation and the fixing structure of the sensor 101 are set separately. The two are not related to each other, and the locking preload of the sensor 101 can be freely adjusted without affecting the locking stability of the base 103, thus improving the overall assembly flexibility. Furthermore, by setting the hollow hole 106, the fixing screw 104 can be pre-fixed to the transition block 102 and the sensor 101, as well as to the transition block 105, before on-site installation, forming a modular assembly. During subsequent installation, the whole assembly can be placed directly at the installation point, and the fixing screw 107 can be directly locked to the foundation by passing an Allen wrench through the hollow hole 106, thus completing the modular assembly of the detection base and improving the convenience of installation and disassembly and work efficiency. Preferably, an elastic washer or an anti-loosening coating is provided at the threaded connection between the fixing screw 104 and the internal threaded hole of the base 103 to further reduce the risk of thread loosening due to vibration or load changes after installation.

[0035] To further reduce the problem of loose threads after long-term use, which may affect measurement accuracy or even cause measurement failure, Embodiment 3 is also provided, in which the connection structure includes a screw rod 6 and a pressure washer 7. The top end of the screw rod 6 is clearance-fitted with the countersunk hole, and the screw rod 6 passes through the countersunk hole, the decoupling structure 4 and the transition block 105 and is clearance-fitted with them. The middle part of the screw rod 6 is provided with external threads for threaded connection with the pressure gasket 7, and its bottom abuts against the fixing screw 107. A pair of fixing screws 3 109 are provided, symmetrically arranged at both ends of fixing screw 1 104, for locking transition block 1 102 and transition block 2 105. The pressure-boosting gasket 7 is located on the top of the fixing screw 104 and has an axial gap with the transition block 105. Its bottom extends and is provided with a locking pin 701 that is interference-fitted with the blind hole 108. Its edge is provided with an arc-shaped opening 702 that engages with the fixing screw 109.

[0036] In this embodiment, the external thread of the screw rod 6 engages with the thread of the pressure washer 7, and the bottom of the screw rod 6 abuts against the fixing screw 107. This allows for accurate location of the top of the screw rod 6 within the countersunk hole, ensuring a suitable height assembly clearance. This prevents the table surface contact stress from being directly transmitted to the screw rod 6 due to the top being locked within the countersunk hole, thus preventing decoupling through the decoupling structure 4. In this embodiment, the bottom of the rod automatically engages, achieving automatic control of the axial clearance and facilitating rapid on-site installation. Furthermore, when the screw rod 6 is locked to the pressure washer 7, a downward force is generated at the bottom and acts on the fixing screw 107, which further enhances the thread locking friction of the fixing screw 107, thereby improving the locking strength between the base 103 and the foundation and avoiding force measurement failure caused by loose connection of the foundation. In other words, the extended screw rod 6 is provided, and its bottom abuts against the fixing screw 107. This not only ensures the relative axial distance between the head of the screw rod 6 and the countersunk hole, but also further prevents the fixing screw 107 from loosening. The structure is simple and highly practical. Furthermore, the bottom of the screw rod 6 abuts against the fixing screw 107, thereby generating a reaction force that acts on the connection between the external thread of the screw rod 6 and the pressure washer 7, thereby further enhancing the friction of the threaded connection at this point, and simultaneously tightening and reinforcing the two connection points of the fixing screw 107 and the screw rod 6. Furthermore, the screw rod 6, through its linkage with the pressure-increasing washer 7, applies an upward reaction force to the fixing screw 104, thereby increasing the thread locking force of the fixing screw 104 and further enhancing the clamping effect of the fixing screw 107. This results in mutual pressure enhancement and locking among the screw rod 6, fixing screw 104, and fixing screw 107, achieving unified pressure enhancement and reinforcement of multiple locking points, improving overall stability, and further reducing sensor 101 detection failure caused by vibration and loosening. Furthermore, the screw rod 6 and the transition block 105 are fitted with a clearance, so that the pressurization system structure does not affect the application of stress and the detection path, thus not interfering with the accuracy of the detection data of the sensor 101; Furthermore, the arc-shaped opening 702 on the edge of the pressure pad 7 allows it to engage with the fixing screw 109, thus the fixing screw 104 can be tightened by simply rotating the transition block manually, without relying on special installation tools, which further improves the efficiency and convenience of on-site installation. Preferably, the screw rod 6 is made of high-strength alloy steel 42CrMo and the surface is galvanized to improve its wear resistance and fatigue life, and improve its reliability under long-term pressure conditions. Preferably, the external thread in the middle of the screw rod 6 is a medium thread M10×1.25 to ensure stable engagement with the pressure-boosting gasket 7.

[0037] This embodiment also provides an assembly method for a human posture data acquisition device, including the following steps: S1. Fixed to the edge of the support platform 3 by interlocking the fixing block 301 and the fixing block 302; S2. Pass the fixing screw 104 through the sensor 101 and the transition block 102, and then use a special wrench to rotate the fixing screw 104 to lock it onto the base 103. S3. By inserting the second fixing screw 107 into the hollow hole 106 of the first fixing screw 104, and then covering and fixing the second transition block 105 on the top of the first fixing screw 104, the second transition block 105 and the first transition block 102 are locked and fixed by the third fixing screw 109. S4. Place the decoupling structure 4 on the bottom groove 401, and install the support force table 3 with the fixed table plate clip on the detection base, so that the circular groove 402 is correspondingly clipped onto the decoupling structure 4. S5. Place the assembled data acquisition device on the foundation installation position, and use an Allen wrench to pass through the tabletop clip and the hollow hole 106 to tighten the fixing screw 107 onto the foundation. S6. Finally, the connecting structure passes through the decoupling structure 4 to connect the platform card and the detection base, completing the overall assembly operation.

[0038] Based on the above embodiment, in step S2, a double-pin wrench is used to rotate and lock the screw 104 into the blind hole 108. In step S6, a central screw 5 is used as a connecting structure, and its bottom is threadedly connected to the transition block 105.

[0039] In this embodiment, the first fixing block 301 and the second fixing block 302 are first fixed to the support platform 3, completing the modular assembly of the upper part of the device. Then, a double-pin wrench is used to tighten the first fixing screw 104 in the blind hole 108 to fix the transition block 102, sensor 101 and base 103. Then, the second transition block 105 is screwed to realize the modular components of the lower part. Next, the decoupling structure 4 is snapped between the bottom groove 401 and the round groove 402. At this time, the connection structure can be pre-installed to ensure the overall connection and facilitate transportation, thus completing the pre-assembly of the overall device. When installation is required, the overall device is placed directly at the installation point. The second fixing screw 107 is locked to the foundation by passing an Allen wrench through the hollow hole 106. Finally, the connection mechanism is used to connect the upper and lower module parts, thus completing the overall assembly operation. Modular assembly of upper and lower parts simplifies the assembly difficulty of multi-structure components. Modular components can be pre-assembled in the factory or on the assembly line, reducing on-site operation time at the installation point and improving work efficiency and convenience.

[0040] Based on the above embodiment, in step S2, a pressure-boosting shim 7 is installed on the fixing screw 104 with an interference fit; Step S3 is set before step S2, and the fixing screw 109 is engaged through the arc opening 702, so that the transition block 102 and the transition block 2 105 are directly rotated, thereby rotating the fixing screw 104 to lock it on the base 103. In step S6, a screw rod 6 is used as a connecting structure, passing through the pressure washer 7 and threadedly connected to it, with its bottom abutting against the fixing screw 107.

[0041] In this embodiment, an additional pressure-boosting shim 7 is provided. The pressure-boosting shim 7 is first fixed to the fixing screw 104. Then, the connection and fixation between the transition block 102 and the transition block 2 105 are completed. The fixing screw 3 109 is inserted into the arc opening 702, so that the two transition blocks can be directly screwed without the need for a special double-pin wrench, thereby realizing the threaded connection of the fixing screw 104. This facilitates on-site operation, reduces the reliance on professional tools, and further improves the ease of installation.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection, the internal communication between two components, or the interaction between two components. Those skilled in the art can understand the meaning of the above terms in this application according to the specific circumstances.

[0043] The foregoing has provided a detailed description of a human posture data acquisition device and its assembly method provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A human posture data acquisition device, characterized in that, It includes a support platform and several testing pillars supported on the edge of the support platform; The detection support includes a tabletop bracket and a detection base, and there is a distance difference between the two; The platform card and the detection base are connected by a decoupling structure to transfer stress. When a vertical force is applied to the support platform, the decoupling structure absorbs additional interference stress and provides overload protection through its own flexible deformation. A connection structure is provided between the platform card and the detection base to restrict the platform card from detaching from the detection base, and at least one end of the connection structure forms a non-rigid connection with the platform card or the detection base. The detection base is used to capture stress from the supporting force table and the decoupled structure.

2. The human posture data acquisition device according to claim 1, characterized in that, The detection base includes a detection component, a transition component, a locking component, and a base platform; The locking component is used to fix the detection component between the transition component and the base; The transition component is used to support and limit the decoupling structure and connect to the connecting structure.

3. The human posture data acquisition device according to claim 2, characterized in that, The detection component includes a sensor, the transition component includes a transition block one and a transition block two, and the locking component includes a fixing screw one and a fixing screw three. The fixing screw passes through the transition block and the sensor in sequence, and fixes the two to the top of the base. The fixing screw passes through the transition block and the sensor, and there is a radial distance difference between them, which is used for the direct transmission of stress. The transition block two is mounted on top of the fixing screw one, and there is an axial gap between them; The bottom of transition block two fits against the circumference of transition block one and is locked together by several fixing screws three; The top of the second transition block has a bottom groove with a limit decoupling structure. The second transition block receives the stress from the decoupling structure and directly transmits it to the first transition block and the sensor.

4. The human posture data acquisition device according to claim 3, characterized in that, The tabletop clamp includes a fixing block one and a fixing block two, which engage with each other and clamp and fix the support table. After the fixing block one and the fixing block two are engaged, a circular groove is formed at the bottom to accommodate and restrict the decoupling structure; The top of the fixing block is provided with a countersunk hole to accommodate the top end of the connecting structure.

5. A human posture data acquisition device according to claim 4, characterized in that, The connection structure includes a central screw, one of its top ends of which is clearance-fitted with the countersunk hole, one of its bottom ends of which passes through the transition block 2 and is threadedly connected to it, and the middle part of which passes through the countersunk hole and the decoupling structure and is clearance-fitted with it.

6. A human posture data acquisition device according to claim 4, characterized in that, The base has an internal threaded hole inside; The bottom of the fixing screw extends into and is threaded into the internal threaded hole, and a pair of blind holes are provided at its top for driving the fixing screw to rotate. The first fixing screw has a hollow hole through it, and the second fixing screw is movably installed at the bottom of the hole to lock the base to the foundation.

7. A human posture data acquisition device according to claim 6, characterized in that, The connection structure includes a screw rod and a pressure-increasing washer; The top end of the screw rod is clearance-fitted with the countersunk hole, and the screw rod passes through the countersunk hole, the decoupling structure and the second transition block and is clearance-fitted with them. The middle part of the screw rod is provided with external threads for threaded connection with the pressure gasket, and its bottom abuts against the second fixing screw. The pressure shim is located on the top of the fixing screw one and has an axial gap with the transition block two. Its bottom extends and is provided with a locking pin and a blind hole interference fit. Its edge has an arc-shaped opening that engages with the fixing screw three.

8. A method for assembling a human posture data acquisition device, used in the human posture data acquisition device as described in any one of claims 1 to 7, characterized in that, Includes the following steps: S1. Fixed to the edge of the support platform by interlocking the fixing block one and the fixing block two; S2. By passing the fixing screw through the sensor and the transition block, and then using a special wrench to rotate the fixing screw, it is locked onto the base. S3. By inserting the second fixing screw into the hollow hole of the first fixing screw, and then covering and fixing the second transition block to the top of the first fixing screw, the second transition block and the first transition block are locked and fixed by the third fixing screw. S4. Place the decoupling structure on the bottom groove and install the support force table with the fixed platform clip on the detection base, so that the circular groove is correspondingly engaged with the decoupling structure. S5. Place the assembled data acquisition device on the foundation installation position, and use an Allen wrench to tighten the two fixing screws onto the foundation by passing through the tabletop clip and the hollow hole. S6. Finally, the connecting structure passes through the decoupling structure to connect the platform card and the testing base, completing the overall assembly operation.

9. The assembly method of a human posture data acquisition device according to claim 8, characterized in that, In step S2, a double-pin wrench is used to rotate and lock the screw in place by corresponding to the blind hole of the fixing screw. In step S6, a central screw is used as the connecting structure, and its bottom is connected to the transition block by two threads.

10. The assembly method of a human posture data acquisition device according to claim 8, characterized in that, In step S2, a pressure-increasing shim is installed on the fixing screw with an interference fit; Step S3 is set before step S2, and the fixing screw three is engaged through the arc opening, so that the transition block one and the transition block two are directly rotated, thereby rotating the fixing screw one to lock it on the base. In step S6, a screw rod is used as a connecting structure, passing through the pressure washer and threadedly connected to it, with its bottom abutting against the second fixing screw.

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