Multi-mode flexible pressure sensor

Abstract

The utility model discloses a multi-mode flexible pressure sensor, which relates to the technical field of flexible pressure sensors and comprises a flexible substrate layer, a packaging and protecting layer is arranged on the upper surface of the flexible substrate layer, and the flexible substrate layer is connected with the packaging and protecting layer in a matched manner. Multi-mode integration layers are installed between the flexible substrate layer and the packaging and protecting layer, a connecting mechanism is arranged between the two multi-mode integration layers, and the connecting mechanism is arranged at the ends of the flexible substrate layer and the packaging and protecting layer. According to the utility model, through the collaborative design of the multi-mode integration layer and the modular connection mechanism and the combination of the elastic support frame, the reinforcing strip and the integrated packaging structure, high-sensitivity pressure detection, extensible flexible layout and stable electrical connection are realized, the environmental adaptability, mechanical durability and measurement precision of the sensor are significantly improved, and the reliability of the sensor is improved. And through the arrangement of the connecting mechanism, the connecting stability among multiple devices can be improved, and the use convenience of the device is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flexible pressure sensor technical field, concretely relates to a multimodal flexible pressure sensor. BACKGROUND

[0002] The multimodal flexible pressure sensor is a sensing device designed based on flexible electronic technology, which can detect multiple physical quantities (such as pressure, deformation, temperature, etc.) or respond to different types of pressure changes (such as static pressure, dynamic pressure, shear force, etc.) at the same time, and has the characteristics of flexibility, bendability and stretchability.

[0003] When connecting the multimodal flexible pressure sensor externally, metal pins are mostly used for connection, and such connection has the main disadvantage of the dual contradiction between mechanical adaptability and environmental compatibility: the significant modulus difference between the rigid material of the metal pin and the flexible substrate will cause stress concentration in the dynamic bending or stretching scene, resulting in interface delamination or pin root fatigue fracture. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a multimodal flexible pressure sensor to solve the problems in the above background technology.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] A multimodal flexible pressure sensor, comprising a flexible substrate layer, an upper surface of the flexible substrate layer being provided with a packaging and protection layer, and the flexible substrate layer and the packaging and protection layer being connected with each other, a multimodal integrated layer being installed between the flexible substrate layer and the packaging and protection layer, a connecting mechanism being arranged between the two multimodal integrated layers and at the end of the flexible substrate layer and the packaging and protection layer, for electrical connection between the two multimodal integrated layers, the two ends of the connecting mechanism being electrically connected with the multimodal integrated layers respectively; the connecting mechanism comprises a first connecting seat fixedly installed at one end of one of the multimodal integrated layers, and a second connecting seat fixedly installed at one end of the other multimodal integrated layer.

[0007] The further improvement of the utility model technical scheme is that the connecting mechanism further comprises a mounting plate fixedly installed at the end of the second connecting seat away from the multimodal integrated layer, a plurality of fixing seats being fixedly installed at equal intervals on the lower surface of the mounting plate, a plug rod being fixedly installed on the lower surface of the fixing seat, and an auxiliary structure being installed at the bottom end of the plug rod.

[0008] The further improvement in the technical scheme of the utility model lies in that: the auxiliary structure comprises a mounting groove arranged at the bottom end of the inserting rod, symmetrically arranged clamping seats are arranged in the mounting groove, and the two clamping seats are fixedly connected with the end part of the inserting rod, and an elastic support frame is arranged at the end of the two clamping seats away from the inserting rod, and the two ends of the elastic support frame are respectively matched with the end of the two clamping seats away from the inserting rod.

[0009] The further improvement in the technical scheme of the utility model lies in that: the fixing seat is provided with an annular groove.

[0010] The further improvement in the technical scheme of the utility model lies in that: the outer part of the connecting mechanism is provided with an encapsulation seat, and the material of the encapsulation seat is same as that of the encapsulation and protection layer.

[0011] The further improvement in the technical scheme of the utility model lies in that: the first connecting seat is provided with an inserting hole matched with the inserting rod.

[0012] The further improvement in the technical scheme of the utility model lies in that: the upper surface of the encapsulation and protection layer is symmetrically provided with a reinforcing strip.

[0013] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0014] The utility model realizes high sensitivity pressure detection, expandable flexible layout and stable electrical connection through the cooperative design of the multi-modal integrated layer and the modular connecting mechanism, the combination of the elastic support frame, the reinforcing strip and the integrated encapsulation structure, significantly improves the environmental adaptability, mechanical durability and measurement accuracy of the sensor, and the setting of the connecting mechanism can increase the connection stability between multiple devices, and further improve the use convenience of the device. DRAWINGS

[0015] The utility model will be further described below with reference to the drawings.

[0016] Figure 1 It is the whole structure schematic view of the utility model;

[0017] Figure 2 It is the whole structure schematic view of the utility model;

[0018] Figure 3 It is the encapsulation and protection layer and the connecting mechanism structure schematic view of the utility model;

[0019] Figure 4 It is the connecting mechanism structure schematic view of the utility model.

[0020] In the figure: 1, flexible substrate layer; 2, multi-modal integrated layer; 3, packaging and protection layer; 4, connecting mechanism; 5, packaging seat; 6, reinforcing strip; 7, first connecting seat; 8, second connecting seat; 9, mounting plate; 10, fixing seat; 11, insertion rod; 12, mounting groove; 13, clamping seat; 14, elastic support frame. DETAILED DESCRIPTION

[0021] The utility model will be made further detailed explanation in combination with the embodiment.

[0022] Embodiment 1

[0023] As Figures 1-4 shown, the utility model provides a kind of multi-modal flexible pressure sensor, comprising: flexible substrate layer 1, the upper surface of the flexible substrate layer 1 is equipped with packaging and protection layer 3, and flexible substrate layer 1 and packaging and protection layer 3 are mutually matched and connected, multi-modal integrated layer 2 is installed between the flexible substrate layer 1 and packaging and protection layer 3, connecting mechanism 4 is equipped between two the multi-modal integrated layer 2, and connecting mechanism 4 is arranged at the end of flexible substrate layer 1 and packaging and protection layer 3, for the electrical connection between two multi-modal integrated layers 2, the both ends of connecting mechanism 4 are electrically connected between multi-modal integrated layer 2 respectively;The connecting mechanism 4 includes the first connecting seat 7 of fixed installation in one end of one of multi-modal integrated layer 2, and one end of another the multi-modal integrated layer 2 is fixedly installed with second connecting seat 8.

[0024] In the embodiment, flexible support structure is formed by the matched connection of flexible substrate layer 1 and packaging protection layer 3, so that multi-modal integrated layer 2 is covered between the two, to avoid direct exposure to external mechanical stress environment, by setting connecting mechanism at the end of flexible substrate layer 1 and packaging protection layer 3, instead of directly connecting to the surface of flexible substrate layer 1, the direct contact area of rigid connecting component and flexible material can be reduced, so as to reduce the stress concentration caused by modulus difference, specifically, the first connecting seat 7 and the second connecting seat 8 of split type are used instead of traditional metal insertion pin, by end fixed installation mode, the rigid part of connecting mechanism 4 is only combined with the end of multi-modal integrated layer 2, to avoid that the root of insertion pin 11 is directly embedded in flexible substrate layer 1, so as to relieve the risk of root fatigue fracture when dynamic bending or stretching, the fixed installation design of first connecting seat 7 and second connecting seat 8 and multi-modal integrated layer 2 further ensures the stability of electrical connection, and simultaneously by end position layout, connecting mechanism 4 is in the coverage range of packaging protection layer 3, to enhance the mechanical adaptability and environmental compatibility of overall structure.

[0025] Embodiment 2

[0026] As Figure 4As shown, on the basis of embodiment 1, the utility model provides a technical scheme: preferably, the connecting mechanism 4 still includes the mounting plate 9 fixedly installed at one end of the second connecting seat 8 away from the multimode integrated layer 2, the lower surface of the mounting plate 9 is equidistantly fixedly installed with several fixed seats 10, the lower surface of the fixed seat 10 is fixedly installed with the plug rod 11, and the bottom end of the plug rod 11 is installed with auxiliary structure.

[0027] In the embodiment, the mounting plate 9 provides a stable support basis for the plug rod 11, avoids stress concentration caused by direct contact of the plug rod 11 with the flexible base layer 1, the equidistantly distributed design of the fixed seat 10 uniformly disperses the stress of the plug rod 11, reduces the risk of local stress damage to the flexible base layer 1, the auxiliary structure is arranged at the bottom end of the plug rod 11, absorbs stress caused by dynamic bending or stretching through elastic deformation in the plugging process, reduces the modulus difference between the rigid plug rod 11 and the flexible base interface, the elastic support frame in the auxiliary structure cooperates with the clamping seat 13 to form a buffer layer when the plug rod 11 is pressed, prevents fatigue fracture of the root of the plug rod 11 due to repeated deformation, and thus the mechanical adaptability and environmental compatibility of the connecting mechanism 4 and the flexible base layer 1 are improved.

[0028] As shown in the figure, Figure 4 Preferably, the auxiliary structure includes a mounting groove 12 arranged at the bottom end of the plug rod 11, the inner symmetry of the mounting groove 12 is provided with a clamping seat 13, and the two clamping seats 13 are fixedly connected with the end of the plug rod 11, and the end of the two clamping seats 13 away from the plug rod 11 is provided with an elastic support frame 14, and the two ends of the elastic support frame 14 are respectively matched with the end of the two clamping seats 13 away from the plug rod 11.

[0029] In the embodiment, the mounting groove 12 is arranged at the bottom end of the plug rod 11 to provide a containing space, the clamping seat 13 is symmetrically fixed to the end of the plug rod 11 to form a stable support basis, the clamping seat 13 cooperates with the elastic support frame 14, the two ends of the elastic support frame 14 are respectively connected with the two clamping seats 13, and the elastic support frame 14 absorbs external bending or stretching load through elastic deformation when the plug rod 11 is stressed, disperses stress concentration of the root of the plug rod 11, the bidirectional connection structure of the elastic support 14 can adapt to multidirectional deformation, reduces the interface shear force caused by the modulus difference between the rigid plug rod 11 and the flexible base layer 1, and thus the mechanical adaptability and fatigue resistance of the connecting mechanism 4 in the dynamic environment are improved.

[0030] Embodiment 3

[0031] As shown in the figure, Figure 4 On the basis of embodiment 1, the utility model provides a technical scheme: preferably, the fixed seat 10 is provided with an annular groove.

[0032] In the embodiment, the annular groove enhances the interface stress distribution capability between the fixed seat 10 and the flexible substrate layer 1 through structural design. In the dynamic bending or stretching scenario, the annular groove can absorb the concentrated stress transmitted by the plug rod 11 through deformation, reduce the rigid constraint at the connection between the root of the plug rod 11 and the fixed seat 10, and thus relieve the interface delamination risk caused by the modulus difference. The geometric characteristics of the annular groove make the stress evenly dispersed along the annular path, avoiding fatigue fracture caused by stress concentration. At the same time, the groove structure improves the mechanical adaptability between the fixed seat 10 and the flexible substrate layer 1, compensates for the displacement difference between the rigid plug rod and the flexible substrate layer 1 through local deformation, and ensures the stability of the electrical connection.

[0033] As shown in Figure 1 , preferably, the outside of the connecting mechanism 4 is provided with an encapsulation seat 5, and the encapsulation seat 5 is made of the same material as the encapsulation and protection layer 3.

[0034] In the embodiment, by providing the encapsulation seat 5 made of the same material as the encapsulation and protection layer 3 outside the connecting mechanism 4, the dual adaptation of mechanical performance and environmental compatibility is realized. First, the material of the encapsulation seat 5 is consistent with that of the encapsulation and protection layer 3, eliminating the modulus mutation between the rigid plug rod 11 and the flexible substrate layer 1, making the stress distribution of the connecting mechanism 4 coordinated with the substrate deformation, avoiding stress concentration and interface delamination caused by modulus difference in dynamic bending or stretching. Second, the encapsulation seat 5 covers the outside of the connecting mechanism 4, forming a continuous protection interface, which not only blocks the erosion of the external environment to the plug rod 11 connection interface such as moisture and chemical corrosion, but also ensures the seamless combination between the encapsulation and protection layer 3 through material consistency, preventing the root of the plug rod 11 from breaking due to fatigue or environmental factors.

[0035] As shown in Figure 4 , preferably, the first connecting seat 7 is provided with plug-in holes equidistantly arranged for plug-in cooperation with the plug rod 11.

[0036] In the embodiment, by providing the equidistantly distributed plug-in hole structure on the first connecting seat 7, the plug rod 11 forms uniformly distributed mechanical contact points when inserted. The equidistant layout can disperse the local stress generated during the plug-in process, avoiding excessive pressure on a single contact point. The geometric cooperation relationship between the plug-in hole and the plug rod 11 is adapted through precision structure, allowing a moderate deformation coordination space between the flexible substrate layer 1 and the rigid plug rod 11 while ensuring the reliability of the electrical connection.

[0037] As shown in Figure 1 and Figure 2 Figure 2 , preferably, the upper surface of the encapsulation and protection layer 3 is symmetrically provided with a reinforcing strip 6.

[0038] In the embodiment, the anti-deformation capability of the packaging and protection layer 3 is improved by arranging the reinforcing strips 6 symmetrically on the upper surface of the packaging and protection layer 3, the symmetric arrangement of the reinforcing strips 6 makes the stress evenly dispersed along the surface of the packaging and protection layer 3 during dynamic bending or stretching, reduces the interface delamination risk caused by local stress concentration, and the arrangement of the reinforcing strips 6 not only maintains the original flexibility of the packaging and protection layer 3, but also enhances the mechanical support strength of the connection area through symmetric reinforcement design.

[0039] The above has made a detailed description of the utility model in general, but on the basis of the utility model, some modifications or improvements can be made, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A multimodal flexible pressure sensor, comprising, characterized in that: A flexible substrate (1) is provided with an encapsulation and protection layer (3) on its upper surface. The flexible substrate (1) and the encapsulation and protection layer (3) are connected to each other. A multimodal integrated layer (2) is installed between the flexible substrate (1) and the encapsulation and protection layer (3). A connecting mechanism (4) is provided between the two multimodal integrated layers (2). The connecting mechanism (4) is located at the ends of the flexible substrate (1) and the encapsulation and protection layer (3) for electrical connection between the two multimodal integrated layers (2). The two ends of the connecting mechanism (4) are electrically connected to the multimodal integrated layer (2) respectively. The connection mechanism (4) includes a first connector (7) fixedly installed at one end of one of the multimodal integrated layers (2), and a second connector (8) fixedly installed at one end of the other multimodal integrated layer (2).

2. The multimodal flexible pressure sensor according to claim 1, characterized in that: The connecting mechanism (4) further includes a mounting plate (9) fixedly installed at one end of the second connecting seat (8) away from the multimodal integrated layer (2). A plurality of fixing seats (10) are fixedly installed at equal intervals on the lower surface of the mounting plate (9). A plug rod (11) is fixedly installed on the lower surface of the fixing seat (10). An auxiliary structure is installed at the bottom end of the plug rod (11).

3. A multimodal flexible pressure sensor according to claim 2, characterized in that: The auxiliary structure includes a mounting groove (12) at the bottom of the insertion rod (11). The mounting groove (12) is symmetrically provided with a card seat (13), and both card seats (13) are fixedly connected to the end of the insertion rod (11). The end of the two card seats (13) away from the insertion rod (11) is provided with an elastic support frame (14), and the two ends of the elastic support frame (14) respectively cooperate with the end of the two card seats (13) away from the insertion rod (11).

4. A multimodal flexible pressure sensor according to claim 3, characterized in that: The fixing seat (10) is provided with an annular groove.

5. A multimodal flexible pressure sensor according to claim 4, characterized in that: The connecting mechanism (4) is provided with an encapsulation base (5) on its outside, and the encapsulation base (5) is made of the same material as the encapsulation and protective layer (3).

6. A multimodal flexible pressure sensor according to claim 5, characterized in that: The first connecting seat (7) is provided with insertion holes at equal intervals for insertion and engagement with the insertion rod (11).

7. A multimodal flexible pressure sensor according to claim 6, characterized in that: The upper surface of the encapsulation and protective layer (3) is provided with reinforcing strips (6) symmetrically.

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