Compression-resistant flexible tactile sensor

Abstract

The utility model discloses a compression-resistant flexible tactile sensor which comprises a protection box, the inner bottom wall of the protection box is fixedly connected with a porous silica gel layer, the top of the porous silica gel layer is fixedly connected with shear thickening gel, the top of the shear thickening gel is fixedly connected with an aerogel composite material layer, and the aerogel composite material layer is fixedly connected with the inner bottom wall of the protection box. The top of the aerogel composite material layer is fixedly connected with a sensor body, and the top of the sensor body is fixedly connected with a top reinforcing layer. According to the utility model, the porous silica gel layer, the aerogel composite material layer and the shear thickening gel are additionally arranged at the bottom of the sensor body, so that the sensor body can be effectively buffered, the situation that the sensor body is damaged when being extruded is effectively reduced, and the anti-pressure capability of the sensor body is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flexible touch sensor technical field, concretely relates to a compression type flexible touch sensor. BACKGROUND

[0002] Flexible touch sensor is a kind of flexible electronic device that can perceive pressure distribution and tactile information, it combines flexible material and sensing technology, can work stably under complex curved surface or dynamic deformation condition.This kind of sensor has light, thin, bendable, stretchable etc., is widely used in robot touch, medical monitoring, intelligent wear and man-machine interaction etc.

[0003] Flexible touch sensor is repeatedly extruded with object when using, in long time use process, or the pressure to flexible touch sensor is too heavy, will lead to the condition of flexible touch sensor damage, to improve the service life of flexible touch sensor, it is especially important to develop a kind of flexible touch sensor with compression resistance. UTILITY MODEL CONTENT

[0004] In view of the problems in the prior art, the utility model aims at providing a compression type flexible touch sensor to solve the background art problems.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A compression type flexible touch sensor, including protective box, the inner bottom wall of the protective box is fixedly connected with porous silica gel layer, the top of the porous silica gel layer is fixedly connected with shear thickening gel, the top of the shear thickening gel is fixedly connected with aerogel composite material layer, the top of the aerogel composite material layer is fixedly connected with sensor body, the top of the sensor body is fixedly connected with top reinforcing layer.

[0007] As a further description of the above technical scheme:

[0008] The top reinforcing layer includes contact microstructure layer, the bottom of the contact microstructure layer is fixedly connected with sensor body, the top of the contact microstructure layer is fixedly connected with modulus transition layer, the top of the modulus transition layer is fixedly connected with conductive functional layer.

[0009] As a further description of the above technical scheme:

[0010] The top of the conductive functional layer is fixedly connected with wear-resistant layer, and the wear-resistant layer is nano ceramic coating.

[0011] As a further description of the above technical scheme:

[0012] The inner wall of the protective box is fixedly connected with a protective frame, the protective frame is a rubber layer, and the inner side of the protective frame is fixedly connected with the sensor body.

[0013] As a further description of the above technical solution:

[0014] The inner side of the protective frame is fixedly connected with a plurality of groups of limiting strips arranged at equal distances, the limiting strips are rubber layers, and a plurality of groups of limiting grooves arranged at equal distances are formed in the porous silica gel layer, the shear thickening gel, the aerogel composite material layer, the sensor body, the contact microstructure layer, the modulus transition layer and the conductive functional layer.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The porous silica gel layer, the aerogel composite material layer and the shear thickening gel are added at the bottom of the sensor body, the sensor body can be effectively buffered, the damage of the sensor body caused by extrusion can be effectively reduced, and the compression resistance of the sensor body is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the utility model;

[0018] Figure 2 It is a perspective view of the utility model;

[0019] Figure 3 It is a sectional view of the utility model;

[0020] Figure 4 It is a perspective view of the utility model Figure 3 A magnified view of the A part of the utility model.

[0021] Mark number explanation in the drawing:

[0022] 1, protective box; 2, porous silica gel layer; 3, shear thickening gel; 4, aerogel composite material layer; 5, sensor body; 6, top reinforcing layer; 601, contact microstructure layer; 602, modulus transition layer; 603, conductive functional layer; 7, wear-resistant layer; 8, protective frame; 9, limiting strip; 10, limiting groove. DETAILED DESCRIPTION

[0023] The technical solutions in the utility model embodiments will be clearly and completely described below with reference to the drawings in the utility model embodiments;

[0024] Please refer to Figures 1-4The utility model discloses: a kind of compression-resistant flexible tactile sensor, including protective box 1, the inner bottom wall of protective box 1 is fixedly connected with porous silica gel layer 2, the top of porous silica gel layer 2 is fixedly connected with shear thickening gel 3, the top of shear thickening gel 3 is fixedly connected with aerogel composite material layer 4, the top of aerogel composite material layer 4 is fixedly connected with sensor body 5, the top of sensor body 5 is fixedly connected with top reinforcement layer 6.

[0025] In the utility model, protective box 1 can provide protection for sensor body 5, reduce the situation that sensor body 5 is damaged by knocking, porous silica gel layer 2 is made of porous silica rubber, impact energy is absorbed by compression deformation through porous structure, the effect of buffering sensor body 5 is played, shear thickening gel 3 is made of non-Newtonian fluid material, viscosity increases suddenly when being impacted, plastic deformation is inhibited, the stability of supporting sensor body 5 is improved, aerogel composite material layer 4 is made of silica aerogel, stress can be further dispersed, and buffering efficiency is improved in cooperation with porous silica gel layer 2 and shear thickening gel 3, effectively reduce the situation that sensor body 5 is damaged when being extruded, and then the compression resistance of sensor body 5 is improved.

[0026] Please refer to Figure 4 Wherein: top reinforcement layer 6 includes contact microstructure layer 601, the bottom of contact microstructure layer 601 is fixedly connected with sensor body 5, the top of contact microstructure layer 601 is fixedly connected with modulus transition layer 602, the top of modulus transition layer 602 is fixedly connected with conductive functional layer 603;The top of conductive functional layer 603 is fixedly connected with wear-resistant layer 7, and wear-resistant layer 7 is nano ceramic coating.

[0027] In the utility model, contact microstructure layer 601 is arrayed by carbon-based material microsphere array, curvature design dynamically adjusts contact area, effectively improves the sensitivity when contacting, modulus transition layer 602 is made of polyurethane elastomer, reduces interface stress mutation, prevents conductive functional layer 603 from separating from contact microstructure layer 601, improves stability, and conductive functional layer 603 is made of silver nanowire embedded in polydimethylsiloxane matrix, can ensure that pressure signal is efficiently transmitted, wear-resistant layer 7 is nano ceramic coating, can make conductive functional layer 603 have certain hardness and strength, so that sensor body 5 top has good corrosion resistance and antioxidant capacity, by setting contact microstructure layer 601, modulus transition layer 602 and conductive functional layer 603, "hard-soft" composite interface can be formed on the top of sensor body 5, which protects the sensor and ensures efficient stress conduction.

[0028] Please refer to Figures 1-4 Wherein: the inner wall of protective box 1 is fixedly connected with protective frame 8, protective frame 8 is rubber layer, and the inner side of protective frame 8 is fixedly connected with sensor body 5.

[0029] The protective frame 8 can provide support around the entire sensor body 5, improve the stability of the sensor body 5, and also buffer the sensor body 5 and protect the sensor body 5.

[0030] Please refer to Figure 4 The inner side of the protective frame 8 is fixedly connected with a plurality of groups of limiting strips 9 arranged at equal distances, the limiting strips 9 are rubber layers, and a plurality of groups of limiting grooves 10 are formed on the porous silica gel layer 2, the shear thickening gel 3, the aerogel composite material layer 4, the sensor body 5, the contact microstructure layer 601, the modulus transition layer 602 and the conductive functional layer 603.

[0031] In the utility model, the limiting strips 9 and the limiting grooves 10 formed on the porous silica gel layer 2, the shear thickening gel 3, the aerogel composite material layer 4, the sensor body 5, the contact microstructure layer 601, the modulus transition layer 602 and the conductive functional layer 603 can provide limiting action between the porous silica gel layer 2, the shear thickening gel 3, the aerogel composite material layer 4, the sensor body 5, the contact microstructure layer 601, the modulus transition layer 602 and the conductive functional layer 603, avoid the sliding between the porous silica gel layer 2, the shear thickening gel 3, the aerogel composite material layer 4, the sensor body 5, the contact microstructure layer 601, the modulus transition layer 602 and the conductive functional layer 603, and further improve the stability of the sensor body 5 work.

[0032] The above is only a preferred specific embodiment of the utility model; however, the protection scope of the utility model is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A pressure-resistant flexible tactile sensor, comprising a protective housing (1), characterized in that: The inner bottom wall of the protective box (1) is fixedly connected to a porous silicone layer (2), the top of the porous silicone layer (2) is fixedly connected to a shear thickening gel (3), the top of the shear thickening gel (3) is fixedly connected to an aerogel composite material layer (4), the top of the aerogel composite material layer (4) is fixedly connected to a sensor body (5), and the top of the sensor body (5) is fixedly connected to a top reinforcement layer (6).

2. The pressure-resistant flexible tactile sensor according to claim 1, characterized in that: The top reinforcement layer (6) includes a contact microstructure layer (601), the bottom of which is fixedly connected to the sensor body (5), a modulus transition layer (602) is fixedly connected to the top of the contact microstructure layer (601), and a conductive functional layer (603) is fixedly connected to the top of the modulus transition layer (602).

3. The pressure-resistant flexible tactile sensor according to claim 2, characterized in that: The top of the conductive functional layer (603) is fixedly connected to a wear-resistant layer (7), which is a nano-ceramic coating.

4. The pressure-resistant flexible tactile sensor according to claim 2, characterized in that: The inner wall of the protective box (1) is fixedly connected to a protective frame (8), which is a rubber layer. The inner side of the protective frame (8) is fixedly connected to the sensor body (5). The inner side of the protective frame (8) is fixedly connected to multiple sets of equidistant limiting strips (9), which are rubber layers. Multiple sets of equidistant limiting grooves (10) are opened on the porous silicone layer (2), shear thickening gel (3), aerogel composite material layer (4), sensor body (5), contact microstructure layer (601), modulus transition layer (602) and conductive functional layer (603).

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