Electrode connecting device for testing the conductive performance of a hydrogel

Abstract

The utility model discloses a kind of electrode connecting devices of hydrogel conductive performance test, it is related to hydrogel detection technical field, including test frame, the top of test frame is equipped with sliding slot, the inner wall of sliding slot is rotatably connected with two-way screw rod, the outer wall of two-way screw rod is threadedly connected with two mounting seats, two-way screw rod rotates and drives two mounting seats relative movement, the top of mounting seat is fixedly installed with U-shaped frame, the inner wall of U-shaped frame is provided with compression mechanism, and one end is equipped with arc slot one, compression mechanism includes screw rod, sliding plate and compression plate, sliding plate and compression plate are vertically moved when screw rod rotates, the one end of compression plate is equipped with arc slot two, arc slot two and arc slot one size are same;Two U-shaped frames are driven to move away by two-way screw rod, can pull the both ends of hydrogel sample when hydrogel sample is detected, and then the different state of hydrogel sample is detected, expand detection range, improve detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of hydrogel detection technology, specifically to an electrode connection device for testing the conductivity of hydrogels. Background Technology

[0002] Conductive hydrogels have broad application prospects in biomedical fields (such as flexible electronic skin and nerve repair electrodes) and flexible sensing due to their good biocompatibility, flexibility and conductivity. Their conductivity (such as ionic conductivity and electron transport efficiency) is the core indicator that determines the performance of the product. Therefore, accurate conductivity testing is a key link in the research and development and production of hydrogels.

[0003] Traditional devices require manual pressing of the electrodes to ensure contact with the hydrogel sample. This not only easily leads to fluctuations in contact pressure due to hand tremors, causing unstable contact resistance and affecting the reliability of test data, but also poses operational risks such as the electrodes scratching the sample or the hand coming into contact with conductive parts. In practical applications, hydrogels are often in dynamic states such as stretching and compression, but existing devices cannot easily adjust the sample's stress state and can only test the conductivity of the sample in its natural state. This cannot cover the performance data under dynamic conditions, resulting in a narrow detection range and difficulty in reflecting the actual application effect of the sample. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an electrode connection device for testing the conductivity of hydrogels, thereby overcoming the aforementioned technical problems in related existing technologies.

[0005] An electrode connection device for testing the conductivity of hydrogels includes a test frame. A groove is formed at the top of the test frame. A bidirectional lead screw is rotatably connected to the inner wall of the groove. Two mounting seats are threaded onto the outer wall of the bidirectional lead screw. When the bidirectional lead screw rotates, it drives the two mounting seats to move relative to each other. A U-shaped frame is fixedly mounted on the top of each mounting seat. A clamping mechanism is provided on the inner wall of the U-shaped frame, and one end of the U-shaped frame has an arc-shaped groove. The clamping mechanism includes a screw, a sliding plate, and a clamping plate. When the screw rotates, it drives the sliding plate and the clamping plate to move vertically. One end of the clamping plate has an arc-shaped groove, which is the same size as the first arc-shaped groove. A synchronization component is provided between the two sliding plates. The synchronization component includes a synchronization rod and two limiting rods. The synchronization rod slides vertically on the two limiting rods. Both sliding plates are slidably mounted on the synchronization rod and can slide horizontally on the synchronization rod.

[0006] Preferably, the clamping mechanism further includes a fixed plate and a rotating ring. The fixed plate is fixedly installed on the inner wall of the U-shaped frame. The screw is threadedly connected to the fixed plate. The rotating ring is rotatably connected to one end of the screw and its bottom is fixedly connected to the top of the sliding plate. The two ends of the sliding plate are respectively slidably engaged with the two sides of the inner wall of the U-shaped frame. The clamping plate is fixedly installed on the bottom of the sliding plate.

[0007] Preferably, the clamping mechanism further includes a throttle, which is fixedly mounted on the top of the screw.

[0008] Preferably, the synchronization component further includes two limiting seats, both of which are fixedly installed on the top of the test frame. A limiting groove is formed on one side of each limiting seat, and two limiting rods are respectively fixedly installed on the inner walls of the two limiting grooves. The synchronization rod is slidably sleeved on the two limiting rods.

[0009] Preferably, an I-shaped block is fixedly installed on the inner wall of the chute, the I-shaped block is rotatably connected to the bidirectional lead screw, and one end of each of the two mounting seats abuts against the two ends of the I-shaped block.

[0010] Preferably, one end of the bidirectional lead screw passes through the test frame and is fixedly mounted with a rotating shaft. One end of the rotating shaft is fixedly mounted with a driven gear. A fixed seat is fixedly mounted on the top of the test frame. One end of the fixed seat is rotatably connected to a transmission shaft. A transmission gear is fixedly sleeved on the outer wall of the transmission shaft. The transmission gear meshes with the driven gear. The diameter of the transmission gear is larger than that of the driven gear, and the transmission ratio is 1:2.

[0011] Preferably, a handle is fixedly mounted on one end of the drive shaft.

[0012] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0013] 1. This utility model provides an electrode connection device for testing the conductivity of hydrogels. By rotating the handle, the screw drives the clamping plate to descend vertically, which cooperates with the arc groove of the U-shaped frame to form a stable clamping space, realizing automatic clamping of the electrode and the hydrogel sample. This completely replaces the traditional manual pressing method, ensuring that the hydrogel sample is always in contact with the electrode wire during the test, thus improving the detection efficiency. At the same time, when one side of the sliding plate moves vertically, the synchronizing rod slides synchronously along the limiting rod, driving the other side of the sliding plate to rise and fall synchronously. There is no need to adjust the clamping mechanisms on both sides separately, which not only ensures the uniformity of pressure of the electrodes on the sample on both sides, but also reduces the number of operation steps, significantly shortens the preparation time, and improves the testing efficiency.

[0014] 2. This utility model provides an electrode connection device for testing the conductivity of hydrogels. By driving two U-shaped frames to move in opposite directions through a bidirectional lead screw, the two ends of the hydrogel sample can be pulled during hydrogel sample testing, thereby detecting different states of the hydrogel sample, expanding the detection range and improving the detection accuracy. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0017] Figure 3 This is a schematic diagram of the cooperation structure between the U-shaped frame and the pressing mechanism in this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the clamping mechanism and the U-shaped frame in this utility model.

[0019] Figure 5 This is a cross-sectional structural diagram of the synchronization component in this utility model.

[0020] In the picture:

[0021] 1. Test frame; 100. I-shaped block; 101. Slide groove; 102. Two-way lead screw; 103. Rotating shaft; 104. Driven gear; 105. Fixed seat; 106. Transmission shaft; 107. Transmission gear; 108. Rotating handle; 2. U-shaped frame; 200. Mounting seat; 201. Arc groove one; 3. Clamping mechanism; 301. Fixed plate; 302. Screw; 303. Rotating handle; 304. Rotating ring; 305. Sliding plate; 306. Clamping plate; 307. Arc groove two; 7. Synchronization assembly; 701. Limit seat; 702. Limit groove; 703. Limit rod; 704. Synchronization rod. Detailed Implementation

[0022] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments:

[0023] like Figure 1-4As shown, this utility model provides an electrode connection device for testing the conductivity of hydrogels, including a test frame 1. A groove 101 is provided on the top of the test frame 1. A bidirectional lead screw 102 is rotatably connected to the inner wall of the groove 101. Two mounting seats 200 are threaded onto the outer wall of the bidirectional lead screw 102. When the bidirectional lead screw 102 rotates, it drives the two mounting seats 200 to move relative to each other. A U-shaped frame 2 is fixedly installed on the top of the mounting seats 200. A clamping mechanism 3 is provided on the inner wall of the U-shaped frame 2, and one end has an arc-shaped groove 201. The clamping mechanism 3 includes a screw 302, a sliding plate 305, and a clamping plate 306. When the screw 302 rotates, it drives the sliding plate 305 and the clamping plate 306 to move vertically. One end of the clamping plate 306 has an arc-shaped groove 307. The inner wall of the slide 101 is fixedly installed with an I-shaped block 100, which is rotatably connected to the double-acting screw 102. One end of each of the two mounting seats 200 abuts against the two ends of the I-shaped block 100. The clamping mechanism 3 also includes a fixed plate 301 and a rotating ring 304. The fixed plate 301 is fixedly installed on the inner wall of the U-shaped frame 2. The screw 302 is threadedly connected to the fixed plate 301. The rotating ring 304 is rotatably connected to one end of the screw 302 and its bottom is fixedly connected to the top of the sliding plate 305. The two ends of the sliding plate 305 are slidably engaged with the two sides of the inner wall of the U-shaped frame 2. The clamping plate 306 is fixedly installed on the bottom of the sliding plate 305. The clamping mechanism 3 also includes a handle 303, which is fixedly installed on the top of the screw 302.

[0024] By rotating the handle 303, the screw 302 is driven to rotate. When the screw 302 rotates, it drives the clamping plate 306 to move vertically, so that the clamping plate 306 and the inner wall of the U-shaped frame 2 cooperate to clamp the hydrogel sample and the electrode wire. This eliminates the need for manual holding of the electrode wire and the hydrogel sample, reducing operational risks. Then, during the detection process, the bidirectional lead screw 102 is rotated. When the bidirectional lead screw 102 rotates forward, it drives the two U-shaped frames 2 to move in opposite directions. This causes the two U-shaped frames and the clamping mechanism 3 to pull the two sides of the hydrogel sample, thereby detecting different states of the hydrogel sample, expanding the detection range, and improving detection accuracy.

[0025] like Figure 5 As shown, in one embodiment, a synchronization component 7 is provided between the two sliding plates 305. The synchronization component 7 includes a synchronization rod 704 and two limiting rods 703. The synchronization rod 704 slides vertically on the two limiting rods 703. Both sliding plates 305 are slidably sleeved on the synchronization rod 704 and can slide horizontally on the synchronization rod 704. The synchronization component 7 also includes two limiting seats 701. Both limiting seats 701 are fixedly installed on the top of the test frame 1. A limiting groove 702 is opened on one side of the limiting seat 701. The two limiting rods 703 are respectively fixedly installed on the inner wall of the two limiting grooves 702. The synchronization rod 704 is slidably sleeved on the two limiting rods 703.

[0026] By using two limiting rods 703 to vertically limit the synchronization rod 704, when one of the sliding plates 305 moves vertically, the synchronization rod 704 can drive the other sliding plate 305 to move synchronously. This linkage reduces the number of operation steps and the operation time, thereby improving the detection efficiency.

[0027] like Figure 2 As shown, in one embodiment, one end of the bidirectional lead screw 102 passes through the test frame 1 and is fixedly mounted with a rotating shaft 103. One end of the rotating shaft 103 is fixedly mounted with a driven gear 104. A fixed seat 105 is fixedly mounted on the top of the test frame 1. One end of the fixed seat 105 is rotatably connected to a transmission shaft 106. A transmission gear 107 is fixedly sleeved on the outer wall of the transmission shaft 106. The transmission gear 107 meshes with the driven gear 104. The diameter of the transmission gear 107 is larger than that of the driven gear 104, and the transmission ratio is one to two. One end of the transmission shaft 106 is fixedly mounted with a handle 108.

[0028] Rotating the drive shaft 106 causes the drive gear 107 and driven gear 104 to mesh, which accelerates the rotation of the shaft 103 and the double-acting lead screw 102 relative to the drive shaft 106, thereby improving the adjustment efficiency of the two U-shaped frames 2, thus improving the detection efficiency and further enhancing the applicability.

[0029] The working principle of the electrode connection device for testing the conductivity of hydrogel is explained in detail below:

[0030] First, fix the test frame 1 on the detection platform 1. Place the hydrogel sample to be tested on the I-shaped block 100 located between the two U-shaped frames 2. Then, add electrode wires to both sides of the hydrogel sample and clamp the electrode wires in the arc groove 201. Then, rotate one of the handles 303, so that the handle 303 drives the screw 302 to rotate. Under the action of the thread, the screw 302 drives the rotating ring 304 to move vertically downward. At this time, the rotating ring 304 pushes the sliding plate 305 and the clamping plate 306 to descend vertically, so that the arc groove 307 cooperates with the arc groove 201 to press the electrode and the hydrogel sample together. During this process, the synchronizing rod 704 slides along the limiting rod 703 to ensure that the clamping plates 306 on both sides move synchronously and the pressure is applied evenly to both sides of the sample, effectively improving the clamping efficiency. Connect the electrode to an external testing device, such as an electrochemical impedance spectroscopy instrument, through wires to test the conductivity of the hydrogel.

[0031] During the testing process, the distance between the two U-shaped frames 2 is adjusted by rotating the handle 108: the handle 108 drives the transmission shaft 106 and the transmission gear 107 to rotate, the transmission gear 107 drives the driven gear 104 and the rotating shaft 103 to rotate, which in turn drives the bidirectional lead screw 102 to rotate, causing the two mounting seats 200 to move relative to each other along the slide groove 101, so that the hydrogel sample is pulled during the test, allowing the hydrogel sample to be tested in different states, expanding the detection range and improving the detection accuracy. After the test is completed, reversing the screw 302 and the bidirectional lead screw 102 can reset the U-shaped frame 2 and the clamping plate 306.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An electrode connection device for testing the conductivity of hydrogels, characterized in that: The test fixture includes a test frame (1), the top of which has a groove (101). A double-acting screw (102) is rotatably connected to the inner wall of the groove (101). Two mounting seats (200) are threaded onto the outer wall of the double-acting screw (102). When the double-acting screw (102) rotates, it drives the two mounting seats (200) to move relative to each other. A U-shaped frame (2) is fixedly installed on the top of the mounting seats (200). A clamping mechanism (3) is provided on the inner wall of the U-shaped frame (2), and an arc groove (201) is provided at one end. The clamping mechanism (3) includes a screw (302), a sliding plate (305), and a clamping plate (306). (302) When rotating, the sliding plate (305) and the pressing plate (306) are driven to move vertically. One end of the pressing plate (306) is provided with an arc groove two (307). The arc groove two (307) and the arc groove one (201) have the same size. A synchronization component (7) is provided between the two sliding plates (305). The synchronization component (7) includes a synchronization rod (704) and two limiting rods (703). The synchronization rod (704) slides vertically on the two limiting rods (703). Both sliding plates (305) are slidably sleeved on the synchronization rod (704) and can slide horizontally on the synchronization rod (704).

2. The electrode connection device for testing the conductivity of hydrogels according to claim 1, characterized in that: The clamping mechanism (3) further includes a fixed plate (301) and a rotating ring (304). The fixed plate (301) is fixedly installed on the inner wall of the U-shaped frame (2). The screw (302) is threadedly connected to the fixed plate (301). The rotating ring (304) is rotatably connected to one end of the screw (302) and its bottom is fixedly connected to the top of the sliding plate (305). The two ends of the sliding plate (305) are respectively slidably engaged with the two sides of the inner wall of the U-shaped frame (2). The clamping plate (306) is fixedly installed on the bottom of the sliding plate (305).

3. The electrode connection device for testing the conductivity of hydrogels according to claim 1, characterized in that: The clamping mechanism (3) also includes a throttle (303), which is fixedly installed on the top of the screw (302).

4. The electrode connection device for testing the conductivity of hydrogels according to claim 1, characterized in that: The synchronization component (7) also includes two limiting seats (701), both of which are fixedly installed on the top of the test frame (1). A limiting groove (702) is opened on one side of the limiting seat (701), and two limiting rods (703) are respectively fixedly installed on the inner wall of the two limiting grooves (702). The synchronization rod (704) is slidably sleeved on the two limiting rods (703).

5. The electrode connection device for testing the conductivity of hydrogels according to claim 1, characterized in that: An I-shaped block (100) is fixedly installed on the inner wall of the slide (101). The I-shaped block (100) is rotatably connected to the bidirectional lead screw (102). One end of each of the two mounting seats (200) abuts against the two ends of the I-shaped block (100).

6. The electrode connection device for testing the conductivity of hydrogels according to claim 1, characterized in that: One end of the bidirectional lead screw (102) passes through the test frame (1) and is fixedly mounted with a rotating shaft (103). One end of the rotating shaft (103) is fixedly mounted with a driven gear (104). A fixed seat (105) is fixedly mounted on the top of the test frame (1). One end of the fixed seat (105) is rotatably connected to a transmission shaft (106). A transmission gear (107) is fixedly sleeved on the outer wall of the transmission shaft (106). The transmission gear (107) meshes with the driven gear (104). The diameter of the transmission gear (107) is larger than that of the driven gear (104), and the transmission ratio is one to two.

7. The electrode connection device for testing the conductivity of hydrogels according to claim 6, characterized in that: A handle (108) is fixedly installed at one end of the drive shaft (106).

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