Flexible wire connecting piece for physical sign monitoring clothes and application of flexible wire connecting piece

Abstract

The invention discloses a flexible wire connecting piece for physical sign monitoring clothes and application of the flexible wire connecting piece. The flexible wire connecting piece for the physical sign monitoring clothes comprises an upper part and a lower part which are arranged on waterproof and moisture permeable fabric. The upper part and the lower part are matched in a concave-convex combination mode. The lower part is provided with a wire track and a silver paste channel, and a wire penetrates through the wire track and achieves silver paste welding in the silver paste channel. The flexible welding area is introduced, and stretchable connection is adopted, so that the overall flexibility of the connecting piece and the fatigue resistance of a welding spot are further ensured; and due to the design of concave-convex occlusion connection, mounting and dismounting become quicker, simpler and more convenient, and the assembly cost of the equipment is greatly reduced. In addition, the micro-roughening treatment of the bonding area improves the bonding effect, so that the upper part and the lower part are firmer.

Description

Technical Field

[0001] The invention relates to a flexible wire connector for vital sign monitoring and application thereof, belonging to the technical field of wire connection. Background Art

[0002] With the development of science and technology, wearable device technology is becoming increasingly mature. Among them, vital sign monitoring clothing, as a new type of medical equipment, has been widely used in health monitoring, sports training, medical rehabilitation and other fields. With the advancement of science and technology and people's increasing attention to health, it has received widespread attention and research as a portable, real-time, non-invasive health monitoring device. Vital sign monitoring clothing usually has various sensors embedded in it, and these sensors and data processing modules are connected by flexible wires to achieve real-time monitoring of multiple physiological parameters such as human heart rate, respiration, and temperature. One of the core of this type of equipment is the design of wire connectors, which must ensure both the reliability of wire connection and the comfort and durability of wearing.

[0003] In the prior art, rigid or semi-rigid materials are usually used in vital sign monitoring clothing to connect and protect different sections of wires. For example, mechanical connection is used: connection through buckles, plugs, etc., which is easy to operate but easy to wear, affecting the reliability of long-term use; welding connection: fixed by welding, the connection is firm but not easy to repair, and there are certain requirements for the heat resistance of the wire material; conductive adhesive connection: bonding with conductive adhesive, which has good flexibility, but the conductive performance and bonding strength are limited by the properties of the colloid. These connectors are designed to withstand a certain amount of pressure and bending to adapt to the protection of the welding points when the clothing is bent. However, these hard and rigid connectors may break or fall off when the wearer moves, and will cause friction and discomfort to the wearer's skin.

[0004] Traditional wire materials and connection methods often have difficulty in balancing flexibility and durability, which affects the comfort and service life of wearing. Mechanical connectors are prone to loosening, conductive adhesive connectors are prone to aging, and welding connectors are difficult to repair, all of which affect the stability of long-term use. Existing connectors mostly use the stiffness and hardness of their own materials to ensure the stability of the connection, such as tin used for welding and epoxy resin glue used to protect solder joints. For example, Chinese patent CN 116046227 A discloses a method for making a fabric sensor, in which the wire connection method of the fabric sensor adopts a riveting method. The riveted connection is usually fragile and easily falls off due to pulling or external force, resulting in damage or failure of the fabric piece; in addition, for soft fabrics, riveting may not provide sufficient support or fixation, which is easy to cause the fabric to loosen or deform; riveted connection points usually increase the rigidity of the fabric, reduce its flexibility and comfort, and are not suitable for application scenarios that require softness. Chinese patent CN220673040 U provides a method for preparing a wire connector (wire connector-1). The connecting rod is set as a bent piece with a preset angle, the wire is passed into the connecting rod, and the connector is connected to the connecting rod by friction welding. Since the friction welding connection requires the application of high temperature and high pressure, this may cause the melting or damage of the fabric fibers, thereby affecting the overall structure and performance of the fabric. In addition, the friction welding connection has high strength, but in some cases it may produce excessive stress on the fabric material, causing the connection point to be easily broken or fragile, reducing the durability of the connection. Summary of the invention

[0005] The purpose of the present invention is to provide a flexible wire connector for vital sign monitoring, which is made of flexible silicone and uses stretchable silver paste at the welding point. Through a certain flat track structure, different wires can be stably connected and conducted. The welding point is resistant to bending, insulated, and has a certain elasticity.

[0006] The flexible wire connector of the present invention solves the following problems existing in the existing connectors: a silver paste injection channel is provided at the connection of the wire on the lower part of the connector for flexible packaging of the wire; a flexible material (silicone) is used as the main body of the connector so that the connector as a whole is in a flexible and bendable state and a flat track is constructed to fix the distribution of the wire and the silver paste, so that the wire can maintain an S-shaped curve arrangement and have a certain tensile elasticity; the upper and lower layers use a fabric composited with a waterproof and breathable film as a waterproof packaging material to ensure that the solder joint is waterproof while maintaining the flexibility of the connector.

[0007] The flexible wire connector for vital sign monitoring clothing provided by the present invention comprises an upper part and a lower part arranged on a waterproof and breathable fabric; The upper component and the lower component adopt a concave-convex combination matching mode, so that the connector can be physically locked by a simple insertion mode, and the bite structure can provide an insulation protection function; The lower component is provided with a wire track and a silver paste channel, and the wire passes through the wire track and silver paste welding is achieved in the silver paste channel.

[0008] In the flexible wire connector of the present invention, the material of the protruding structures on the upper component and the lower component may be silicone.

[0009] In the flexible wire connector of the present invention, the protruding structures on the upper component and the lower component are provided with hot melt adhesive layers to achieve bonding.

[0010] In the flexible wire connector of the present invention, a circular ring is arranged on the lower component, and a symmetrical channel formed by the outer side of the circular ring and the protrusion is the silver paste channel.

[0011] In the flexible wire connector of the present invention, the waterproof layer on the waterproof and breathable fabric may be a TPU layer.

[0012] In the flexible wire connector of the present invention, the upper component and the lower component are respectively provided with a wire inlet and a wire outlet at corresponding positions.

[0013] The preparation of the upper member and the lower member may include screen printing.

[0014] When the flexible wire connector is used for medical monitoring, smart clothing, flexible electronic devices and wire connection, the wire is arranged in the wire track of the flexible wire connector, and then the solder joint is reinforced in the silver paste channel using a stretchable silver paste; the upper component and the lower component are butt-jointed and bonded; Specifically, the thermal compression bonding is performed under the heat and pressure of a heat press.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Enhance the flexibility and reliability of connectors Flexible welding area: Existing flexible connection technologies often ignore the problem of loose connection caused by long-term vibration or friction. The present invention introduces a flexible welding area and uses stretchable connection to further ensure the overall flexibility of the connector and the fatigue resistance of the weld.

[0016] The flat curved track design allows the wire to remain in a curved state during welding, which can give the wire a certain degree of tensile resistance after welding and prevent stress concentration during use.

[0017] 2. Improve the convenience of installation and maintenance Due to the design of the concave-convex snap connection, installation and removal become faster and easier, greatly reducing the assembly cost of the equipment. In addition, the micro-roughening treatment of the bonding area improves the bonding effect and makes the upper and lower parts more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the lower part of the flexible wire connector of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the upper component in the flexible wire connector of the present invention.

[0020] Figure 3 It is a picture of the initial state of the flexible connector of the present invention (connector passage state).

[0021] Figure 4 This is a picture of the flexible connector of the present invention after being stretched 500 times (connector passage state).

[0022] Figure 5 It is the tension-displacement curve of the flexible connector of the present invention after being stretched 500 times.

[0023] The marks in the figure are as follows: 1 waterproof and breathable fabric, 2 TPU layer, 3 silicone layer, 4 wire track, 5 silver paste channel, 6 hot melt adhesive, 7 wire outlet. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0025] The flexible wire connector for vital sign monitoring clothing provided by the present invention comprises an upper part ( Figure 2 ) and the lower part ( Figure 1 ), the upper part and the lower part adopt a concave-convex combination, so that the connector can be physically locked by a simple insertion method, and the bite structure can provide insulation protection. A TPU layer 2 is arranged on the waterproof and breathable fabric 1 as a waterproof layer.

[0026] like Figure 1 As shown, the lower part is provided with a wire track 4 and a silver paste channel 5, and the wire passes through the wire track 4 and silver paste welding is achieved in the silver paste channel 5. A circular ring is provided on the lower part, and the symmetrical channel formed by the outer side of the circular ring and the protrusion is the silver paste channel 5. The material of the protruding structure on the upper part and the lower part is silicone, such as the silicone layer 3, which has high elasticity and biocompatibility. The protruding structure on the upper part and the lower part is provided with a hot melt adhesive layer 6 to achieve bonding. The upper part and the lower part are respectively provided with a wire inlet (not shown in the figure) and a wire outlet 7 at the corresponding positions.

[0027] The upper and lower parts are preferably prepared by screen printing.

[0028] When the flexible wire connector of the present invention is used for medical monitoring, smart clothing, flexible electronic devices and wire connections, the wire is arranged in the wire track 4 of the flexible wire connector, and then the solder joints are reinforced in the silver paste channel 5 using stretchable silver paste; the upper component and the lower component are butt-jointed and bonded.

[0029] Specifically, the flexible wire connector of the present invention can be prepared according to the following steps: 1) A plurality of slender conductor tracks 4 are designed inside the connector, and the enameled copper wire is placed on the lower component in the shape of the silicone track. The inner wall of the channel can be coated with an anti-wear coating (including but not limited to a composite or polymer coating) to protect the wire from damage.

[0030] 2) Use stretchable conductive silver paste to "weld" the wire in the silver paste channel 5 and heat it in a forced air drying oven at 80°C for 15 minutes. 3) Cover the upper part on the lower part and heat press for 2 minutes in a heat press (temperature 120°C).

[0031] Through the above steps, the flexible connector of the present invention that is resistant to stretching and bending can be obtained. The flexible connector not only has excellent electrical conductivity and flexibility, but also can adapt to various complex application scenarios, significantly improving the performance and reliability of vital sign monitoring clothing and other related equipment. The results of the tensile test of the flexible connector of the present invention are as follows: The initial state of the flexible connector and the path state after stretching 500 times are shown in the figure below. Figure 3 and Figure 4 shown.

[0032] The tension-displacement curve of the flexible connector after stretching 500 times is as follows Figure 5 shown.

[0033] The bending test results of the flexible connector are shown in Table 1.

[0034] Table 1 Bending test of flexible connectors

[0035] The above test process is as follows: Testing equipment: universal experimental tensile machine; Use high-precision universal tensile testing machine to ensure the accuracy of test data.

[0036] Test settings: original tensile length: 20 mm; tensile speed: 50 mm / min; tensile deformation: 5%; number of cycles: 500 times.

[0037] Test preparation: Flexible connector preparation: Make sure the surface of the flexible connector is clean and free of damage.

[0038] Fixture selection: Choose appropriate pneumatic fixtures to ensure that the sample will not slip or break during the test.

[0039] Preliminary Check: Before testing begins, record the path status of the flexible connector.

[0040] Test operation: Install the flexible connector: Clamp the flexible connector firmly at both ends of the universal tensile testing machine with pneumatic clamps to ensure centering and avoid deviation.

[0041] Parameter setting: According to the test settings, accurately set the tensile original length, speed and deformation parameters of the tensile testing machine.

[0042] Test execution: Start the tensile testing machine and conduct 500 cycles of tensile testing. Ensure that the equipment operates stably during the test without abnormal vibration or noise.

[0043] Data recording and analysis: Real-time monitoring: real-time monitoring of tension and displacement data during the test to ensure the integrity of the test data.

[0044] Data recording: Record the tension and displacement data of each cycle, paying special attention to the changes in the deformation characteristics of the flexible connector.

[0045] Follow-up examination: Post-test inspection: After completing the 500-cycle tensile test, inspect the physical condition of the flexible connector and record any obvious deformation, damage or abnormality.

[0046] Path status check: After the test, check whether the flexible connector maintains the path status and record the results.

[0047] Data Analysis and Reporting: The test data is analyzed in detail, and the tension-displacement curve is drawn to evaluate the durability and stability of the flexible connector.

Claims

1. A flexible wire connector for vital sign monitoring clothing, comprising an upper part and a lower part arranged on a waterproof and breathable fabric; The upper component and the lower component adopt a concave-convex combination matching mode; The lower component is provided with a wire track and a silver paste channel, and the wire passes through the wire track and silver paste welding is achieved in the silver paste channel.

2. The flexible wire connector according to claim 1, characterized in that: The material of the protruding structures on the upper component and the lower component is silicone.

3. The flexible wire connector according to claim 1 or 2, characterized in that: The raised structures on the upper component and the lower component are provided with a hot melt adhesive layer to achieve bonding.

4. The flexible wire connector according to any one of claims 1 to 3, characterized in that: The lower component is provided with a circular ring, and the symmetrical channel formed by the outer side of the circular ring and the protrusion is the silver paste channel.

5. The flexible wire connector according to any one of claims 1 to 4, characterized in that: The waterproof layer on the waterproof and breathable fabric is a TPU layer.

6. The flexible wire connector according to any one of claims 1 to 5, characterized in that: The upper component and the lower component are respectively provided with a wire inlet and a wire outlet at corresponding positions.

7. The method for preparing the flexible wire connector according to any one of claims 1 to 6, comprising the step of preparing the upper component and the lower component by screen printing.

8. Use of the flexible wire connector according to any one of claims 1 to 6 in medical monitoring, smart clothing, flexible electronic devices and wire connection.

9. The use according to claim 8, characterized in that: The wire is arranged in the wire track of the flexible wire connector, and then the solder joints are reinforced in the silver paste channel using a stretchable silver paste; and the upper component and the lower component are butt-jointed and bonded.

10. The use according to claim 9, characterized in that: Thermocompression bonding is performed under the heat and pressure of a heat press.

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