Intelligent wearable sensor flexible fitting structure

Abstract

This invention proposes a flexible fit structure for a smart wearable sensor, relating to the field of flexible sensor technology. The structure includes an arm, a connecting module, a hinge, a wristband, and a sensor. One end of the arm has a mounting frame, within which the connecting module is fixed. The connecting module includes a strain gauge and a helical spring. One end of the hinge is elastically connected to the arm via a helical spring, while the other end is fitted with a bioelectrode patch and a flexible sensor. The wristband's strap and buckle are respectively located on the arm and hinge. This invention solves the problems of poor dynamic fit and susceptibility to motion interference in traditional wearable devices due to their rigid structures. By coordinating the elastic deformation of the hinge and the helical spring, wrist pressure is converted into resistance changes in the strain gauge, enabling real-time pressure detection. Simultaneously, the flexible sensor and the bioelectrode patch are in dynamic contact through a pre-compressed spring probe, ensuring signal transmission during bending. The serpentine wiring grooves in the strap reduce circuit fatigue and breakage.

Description

Technical Field

[0001] This utility model relates to the field of flexible sensor technology, and in particular to a flexible bonding structure for a smart wearable sensor. Background Technology

[0002] With the rapid development of medical rehabilitation, sports science, and human-computer interaction technologies, the demand for precise wrist movement monitoring is increasing. Whether it's rehabilitation training for stroke patients, movement optimization for athletes, or natural interaction in the VR / smart wearable sensor flexible fit structure field, all rely on high-precision, high-reliability wrist movement data acquisition. Currently, rigid sensors in mainstream wrist movement sensing technologies are prone to causing skin pressure discomfort and lack the ability to simultaneously monitor deep tendon and bone activity, thus limiting their reliability in medical rehabilitation and fine motor analysis.

[0003] A Chinese patent with publication number CN219939890U discloses a wearable device based on bio-information, which mainly includes an elastic wearing structure, a flexible covering band, a waterproof base plate with sensors, and a display body. The elastic band adapts to different limb sizes, the flexible band reduces friction and discomfort, the sensors collect data in contact with the skin, the display provides feedback, and the base plate has a sealed structure to prevent sweat from entering the electronic components. This device is fixed to a single limb position (such as the wrist), and the sensors only monitor local biosignals. It cannot capture the motion linkage information between the wrist and forearm (such as joint angle of motion, muscle group coordination data), and lacks the ability to adapt to dynamic biomechanical parameters of multiple parts.

[0004] In response to the aforementioned technologies, a flexible bonding structure for smart wearable sensors is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] This invention proposes a flexible bonding structure for intelligent wearable sensors, which solves the problems of poor dynamic fit and easy interference of biological signals due to the rigid structure of traditional wearable devices.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a flexible fitting structure for a smart wearable sensor, including: an arm frame, a connecting module, a hinge, a wristband, and a sensor; a mounting frame is fixedly provided at one end of the arm frame, a mounting groove is provided at the top of the mounting frame, a signal acquisition board is fixedly provided at the bottom of the mounting groove, and a metal probe is provided on the signal acquisition board; at least two slots for attaching the wristband are provided at the other end of the arm frame.

[0007] The connection module is fixedly installed in the mounting frame. The connection module includes two strain gauges and a helical spring. The end face of the strain gauge that contacts the hinge is provided with a slot. One end of the helical spring is fixedly fitted into the slot, and the other end is elastically abutted against the hinge.

[0008] One end of the hinge is snapped to the boom via a connecting module, and the other end of the hinge is provided with a through groove and a circular groove, with a bioelectrode patch embedded in the through groove.

[0009] Sensors include flexible sensors and displays;

[0010] A flexible sensor is snapped into the circular groove. The flexible sensor is connected to the bioelectrode patch via a spring probe. The display is snapped into the mounting groove and electrically connected to the signal acquisition board.

[0011] The bioelectrode patch is electrically connected to the signal acquisition board via circuitry.

[0012] Preferably, the bottom of the through groove of the hinge is provided with a groove that matches the bioelectrode patch, and the bioelectrode patch is fixed in the groove by conductive adhesive.

[0013] Preferably, the metal probe of the signal acquisition board is a gold-plated spring pin, and the end of the spring pin of the signal acquisition board makes elastic contact with the contact point of the bioelectrode patch.

[0014] Preferably, the wristband includes a strap and a buckle, with the strap being inserted into a slot and the buckle being threaded through a groove.

[0015] Preferably, the top center of the strap is provided with a serpentine wiring groove for wiring; the surface of the buckle is provided with multiple honeycomb holes spaced apart, and the end of the buckle is fixedly provided with a connecting buckle that engages with the honeycomb holes.

[0016] Preferably, the strain gauge is a wedge-shaped structure, and the end face of the strain gauge wedge structure that contacts the hinge is provided with anti-slip texture. At least two helical springs and slots are provided.

[0017] Compared with existing technologies, the beneficial effects of this invention include: the elastic linkage design of the hinge and helical spring accurately converts wrist pressure into a resistance signal, improving detection accuracy in dynamic contact scenarios and avoiding measurement deviations caused by structural rigidity; the pre-compression spring probe contact mechanism between the flexible sensor and the bioelectrode patch ensures impedance connection when the device is bent, reducing the impact of motion interference on the bioelectrical signal; the serpentine cable routing layout of the strap disperses bending stress and extends the lifespan of the circuitry; and the honeycomb hole adjustment structure of the through-slot and buckle adapts to different wrist sizes, improving wearing comfort. These technical solutions collaboratively solve the problems of dynamic fit, signal stability, and device durability, providing reliable support for the application of wearable devices in medical monitoring and sports health fields. Attached Figure Description

[0018] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0019] Figure 1 The schematic diagram shows a structural schematic of a flexible bonding structure for a smart wearable sensor according to one embodiment of the present invention.

[0020] Figure 2 The diagram illustrates the structure of a wristband according to one embodiment of the present invention.

[0021] Figure 3 The diagram schematically shows the structural layout of a bioelectrode patch according to one embodiment of the present invention.

[0022] Figure 4 The schematic diagram shows a structural schematic of a boom according to one embodiment of the present invention.

[0023] Figure 5 The schematic diagram shows a structural schematic of a hinge according to one embodiment of the present invention.

[0024] Figure 6 The schematic diagram shows a structural schematic of a connection module according to one embodiment of the present invention.

[0025] The diagram is labeled as follows: 1. Boom; 11. Mounting frame; 110. Mounting slot; 111. Signal acquisition board; 10. Slot; 2. Connecting module; 21. Strain gauge; 22. Helical spring; 210. Hole slot; 3. Hinge; 30. Groove; 301. Through slot; 302. Circular slot; 31. Bioelectrode patch; 4. Wristband; 41. Strap; 42. Buckle; 410. Serpentine wiring channel; 420. Honeycomb hole; 421. Connecting buckle; 5. Sensor; 51. Flexible sensor; 52. Display. Detailed Implementation

[0026] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0027] According to one embodiment of the present invention, in conjunction with Figures 1-6The image shows a flexible, wearable structure for a smart wearable sensor, comprising: an arm 1, a connecting module 2, a hinge 3, a wristband 4, and a sensor 5. One end of the arm 1 is fixedly fitted with a mounting frame 11. The top of the mounting frame 11 has a mounting groove 110, and the bottom of the mounting groove 110 is fixedly fitted with a signal acquisition board 111. The signal acquisition board 111 has metal probes for converting bioelectrical signals into processable electrical signals. The metal probes of the signal acquisition board 111 are gold-plated spring pins. The ends of these gold-plated spring pins elastically contact the contacts of the bioelectrode patch 31. Utilizing the oxidation resistance of the gold plating and the elastic pre-compression of the spring pins, a low-impedance connection is maintained under repeated bending scenarios, extending the service life. The other end of the arm 1 has at least two slots 10 for engaging the wristband 4. Through the engagement of the slots 10 and the wristband 4, the wristband 4 can be quickly installed and stably secured, improving wearing comfort.

[0028] The connection module 2 is fixedly installed within the mounting frame 11. The connection module 2 includes two strain gauges 21 and a helical spring 22. The end face of the strain gauge 21 that contacts the hinge 3 has a slot 210. One end of the helical spring 22 is fixedly fitted into the slot 210, and the other end is connected to the hinge 3. Through the synergistic effect of the compression deformation of the helical spring 22 and the resistance change of the strain gauge 21, wrist pressure is detected in real time, reducing dynamic motion interference. The wedge-shaped end of the strain gauge 21 that contacts the hinge 3 has an anti-slip texture. The inclined contact of the wedge structure optimizes the stress transmission path, allowing wrist pressure to be transmitted along the sensitive grid direction of the strain gauge 21, improving detection sensitivity. At least two helical springs 22 and slots 210 are provided. The symmetrical distribution of the double helical springs 22 balances the deformation pressure of the hinge 3, reducing signal drift. Simultaneously, the anti-slip texture inhibits relative sliding between the strain gauge 21 and the hinge 3, ensuring signal stability under dynamic bending scenarios.

[0029] The hinge 3 is made of elastic material. One end of the hinge 3 is snapped into the arm 1 through the connecting module 2. The other end of the hinge 3 has a through groove 301 and a circular groove 302. A bioelectrode patch 31 is embedded in the through groove 301. The bioelectrode patch 31 is electrically connected to the signal acquisition board 111 through a circuit. Combined with the elastic bending characteristics of the hinge 3, the bioelectrode patch 31 is dynamically attached to the skin, improving the stability of signal acquisition. The bottom of the through groove 301 of the hinge 3 has a groove 30 that matches the bioelectrode patch 31. The bioelectrode patch 31 is fixed in the groove 30 with conductive adhesive. The limiting design of the groove 30 prevents the bioelectrode patch 31 from shifting, ensuring the accuracy of signal acquisition.

[0030] The wristband 4 includes a strap 41 and a buckle 42. The strap 41 is fitted into the slot 10, and the buckle 42 passes through the through slot 301. The sliding engagement between the through slot 301 and the buckle 42 allows for adaptation to different wrist sizes, enhancing versatility. The top center of the strap 41 has a serpentine wiring groove 410 for wiring, which disperses bending stress and reduces fatigue of the flexible circuit. The surface of the buckle 42 has multiple honeycomb holes 420 spaced apart. The end of the buckle 42 is fixedly provided with a connecting buckle 421 that engages with the honeycomb holes 420. The tightness can be infinitely adjusted by the engagement of the honeycomb holes 420 and the connecting buckle 421, improving wearing comfort.

[0031] Sensor 5 includes a flexible sensor 51 and a display 52. ​​The flexible sensor 51 is snapped into the circular groove 302. The flexible sensor 51 is connected to the bioelectrode patch 31 via a spring probe. The elastic contact of the spring probe compensates for deformation and displacement, thus avoiding signal transmission interruption. The display 52 is snapped into the mounting groove 110 and electrically connected to the signal acquisition board 111 for intuitive display of physiological parameters.

[0032] In this embodiment, the flexible fitting structure of the smart wearable sensor achieves dynamic signal acquisition and adaptive fitting through the coordinated elastic deformation of the arm 1 and the hinge 3. When the user wears it, the strap 41 of the wristband 4 is fixed to the other end of the arm 1 through the slot 10, and the buckle 42 passes through the through slot 301 of the hinge 3 and is adjusted for tightness using the honeycomb holes 420 and the connecting buckle 421. At this time, the wrist pressure acts on the hinge 3, and its elastic material (such as silicone) undergoes bending deformation, pushing the helical spring 22 to compress in the hole slot 210 of the connecting module 2. The strain gauge 21 generates a change in resistance due to the spring pressure, and the signal acquisition board 111 calculates the pressure data in real time by detecting the resistance value (such as a Wheatstone bridge). The flexible sensor 51 is embedded in the circular slot 302 of the hinge 3. It makes elastic contact with the contact point of the bioelectrode patch 31 through a gold-plated spring probe to ensure stable contact impedance during dynamic bending. The signal collected by the bioelectrode patch 31 is transmitted to the signal acquisition board 111 through the line and converted into a digital signal by the ADC module. The bending of hinge 3 is precisely transmitted to strain gauge 21 through helical spring 22, realizing linear pressure-resistance mapping and overcoming the shortcomings of traditional rigid structures that cannot be dynamically detected. The signal acquisition board 111 integrates filtering and algorithm modules to process the raw signal into physiological parameters such as heart rate and muscle activity, and finally outputs them to display 52; the serpentine wiring groove 410 of the strap 41 avoids wiring bending and breakage, ensuring signal integrity.

[0033] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A smart wearable sensor flexible fitting structure, characterized in that, include: The boom (1), connecting module (2), hinge (3), wrist strap (4), and sensor (5) are provided; a mounting frame (11) is fixedly provided at one end of the boom (1), a mounting groove (110) is provided at the top of the mounting frame (11), a signal acquisition board (111) is fixedly provided at the bottom of the mounting groove (110), and a metal probe is provided on the signal acquisition board (111); at least two slots (10) for snapping the wrist strap (4) are provided at the other end of the boom (1); The connecting module (2) is fixedly installed in the mounting frame (11). The connecting module (2) includes two strain gauges (21) and a helical spring (22). The end face of the strain gauge (21) that contacts the hinge (3) is provided with a slot (210). One end of the helical spring (22) is fixedly fitted into the slot (210), and the other end of the helical spring (22) is elastically abutted against the hinge (3). One end of the hinge (3) is connected to the boom (1) via the connecting module (2), and the other end of the hinge (3) is provided with a through groove (301) and a circular groove (302). A bioelectrode patch (31) is embedded in the through groove (301). The sensor (5) includes a flexible sensor (51) and a display (52); A flexible sensor (51) is snapped into the circular groove (302), and the flexible sensor (51) is connected to the bioelectrode patch (31) via a spring probe; the display (52) is snapped into the mounting groove (110) and electrically connected to the signal acquisition board (111); The bioelectrode patch (31) is electrically connected to the signal acquisition board (111) via a circuit.

2. The flexible bonding structure for intelligent wearable sensors according to claim 1, characterized in that, The bottom of the through groove (301) of the hinge (3) is provided with a groove (30) that matches the bioelectrode patch (31), and the bioelectrode patch (31) is fixed in the groove (30) by conductive adhesive.

3. The flexible bonding structure for intelligent wearable sensors according to claim 1, characterized in that, The metal probe of the signal acquisition board (111) is a gold-plated spring needle, and the end of the spring needle of the signal acquisition board (111) is in elastic contact with the contact point of the bioelectrode patch (31).

4. The flexible bonding structure for intelligent wearable sensors according to claim 1, characterized in that, The wristband (4) includes a strap (41) and a buckle (42). The strap (41) is fitted into the slot (10), and the buckle (42) is inserted into the through slot (301).

5. The flexible bonding structure for a smart wearable sensor according to claim 4, characterized in that, The top center of the strap (41) is provided with a serpentine wiring groove (410) for wiring; the surface of the buckle (42) is provided with a plurality of honeycomb holes (420) spaced apart, and the end of the buckle (42) is fixedly provided with a connecting buckle (421) that engages with the honeycomb holes (420).

6. The flexible bonding structure for a smart wearable sensor according to claim 1, characterized in that, The strain gauge (21) has a wedge-shaped structure. The end face of the strain gauge (21) that contacts the hinge (3) is provided with anti-slip texture. The helical spring (22) and the slot (210) are provided in at least two.

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