High-sensitivity biochemical detection miniature double-end clamped beam sensing device

Abstract

The utility model discloses a high-sensitivity biochemical detection miniature double-end clamped beam sensing device, which relates to the technical field of biochemical detection, and comprises a sensing base and a clamped beam fixedly arranged at the top of the sensing base, piezoresistors are fixedly arranged at the upper ends of the two sides of the clamped beam, a sealing ring is fixedly sleeved on the outer wall of the sensing base, and the outer wall of the sensing base is provided with a pressure sensor. A top cover is embedded in the upper end of the inner wall of the sealing ring in a contact mode, the top cover covers the top of the clamped beam, the upper ends of the two sides of the sealing ring are each provided with two symmetrically-arranged pressing blocks through an elastic supporting mechanism, the two pressing blocks cover the top of the top cover, and a pushing and separating mechanism is arranged at the top of the top cover. According to the utility model, the top cover and the clamped beam can be quickly and conveniently pressed and packaged, and the top cover can be quickly disassembled, so that the internal components of the sensing device can be conveniently disassembled and overhauled, and the use convenience of the sensing device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biochemical detection, in particular to a high-sensitivity biochemical detection micro double-end fixed-beam sensing device. Background Art

[0002] The working principle of the miniature double-ended clamped-beam sensor device is based on the piezoelectric effect and the principle of mechanical deformation. When the sensitive layer senses changes in external physical quantities, it will produce corresponding mechanical deformation. This mechanical deformation will be transmitted to the piezoelectric layer, causing changes in the charge distribution inside the piezoelectric layer, and then generating an electrical signal, thereby completing biochemical detection with high sensitivity.

[0003] A search revealed patent document CN105858593A, which discloses a method for fabricating a micro double-clamped beam sensor for highly sensitive biochemical detection. This sensor utilizes an array of double-clamped beams. The sensor utilizes differential processing between a working beam with a locally specific biosensitive layer and a reference beam without a specific biosensitive layer, effectively reducing measurement errors caused by nonspecific adsorption. Furthermore, varying beam dimensions allows for a detection range spanning two orders of magnitude.

[0004] However, when the above-mentioned sensor device is in use, the top of the double-end clamped beam needs to be encapsulated with a top cover, and the existing encapsulation device is bonded with an adhesive, which makes the sensor device unable to be conveniently separated and disassembled during subsequent maintenance, reducing the convenience of using the sensor device. Utility Model Content

[0005] In view of the above problems existing in the existing high-sensitivity biochemical detection micro double-end clamped beam sensing device, the present utility model is proposed.

[0006] Therefore, the purpose of the present invention is to provide a highly sensitive biochemical detection miniature double-ended fixed-beam sensor device, which solves the problem that the existing packaging method of the double-ended fixed-beam and the top cover is bonding with adhesive, resulting in the sensor device being unable to be conveniently separated and disassembled during subsequent maintenance.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] A highly sensitive biochemical detection micro double-ended clamped beam sensor device comprises a sensor base and a clamped beam fixed to the top of the sensor base. Piezoresistors are fixed to the upper ends of both sides of the clamped beam. A sealing ring is fixedly sleeved on the outer wall of the sensor base. A top cover is embedded in the upper end of the inner wall of the sealing ring. The top cover is mounted on the top of the clamped beam.

[0009] Two symmetrically arranged pressure blocks are provided on both upper ends of the sealing ring through an elastic support mechanism, and the two pressure block covers are provided on the top of the top cover;

[0010] The top of the top cover is provided with a pushing and separating mechanism.

[0011] Preferably, the elastic support mechanism includes a spring, movable grooves are provided on the upper ends of both sides of the inner wall of the sealing ring, the pressure block is slidably arranged in the movable groove, a guide block is fixedly penetrated inside the pressure block, guide grooves are provided on both sides of the inner wall of the movable groove, the end of the guide block is slidably arranged in the guide groove, the spring is located in the guide groove, and the two ends are fixedly connected to the inner wall of the guide groove and the guide block respectively.

[0012] Preferably, the two pressing blocks are arranged with inclined surfaces on the sides close to each other.

[0013] Preferably, the pushing and separating mechanism includes a vertical rod, which is fixed to the top of the top cover. A push plate is rotatably sleeved on the outer wall of the vertical rod, and the push plate contacts and cooperates with the sides of the two pressing blocks.

[0014] Furthermore, a pushing inclined surface is provided on one side of the push plate close to the pressing block.

[0015] Preferably, two symmetrically arranged rotating buckle grooves are provided on the top of the push plate.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] 1. The utility model, through the sensor base, fixed support beam, pressure resistor, top cover, pressure block and elastic support mechanism, can make the top cover and the fixed support beam quickly and conveniently press-packaged, and the top cover can be quickly disassembled, which is convenient for disassembly and maintenance of the internal components of the sensor device, thereby improving the convenience of use of the sensor device.

[0018] 2. The utility model, through the top cover, the pressure block and the push separation mechanism, can make the two pressure blocks move away from the top cover at the same time to complete the separation of the top cover and the fixed support beam, which is convenient for rapid disassembly of the sensor device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 For the utility model Figure 1 A magnified schematic diagram of part A;

[0022] Figure 3 This is a schematic diagram of the top view of the push plate of the utility model;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the pressing block of the present utility model.

[0024] Description of reference numerals:

[0025] 1. Sensing base; 2. Fixing beam; 3. Piezoresistors; 4. Sealing rings; 5. Top cover; 6. Pressure blocks; 7. Springs; 8. Guide blocks; 9. Rotating buckle slots; 10. Vertical rods; 11. Push plates; 12. Pushing ramps. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] The embodiment of the utility model discloses a high-sensitivity biochemical detection micro double-end clamped beam sensing device.

[0028] Example 1

[0029] The utility model provides Figure 1-4 The highly sensitive biochemical detection micro double-end clamped beam sensor device shown includes a sensor base 1 and a clamped beam 2 fixedly mounted on the top of the sensor base 1. Piezoresistors 3 are fixedly mounted on the upper ends of both sides of the clamped beam 2. A sealing ring 4 is fixedly mounted on the outer wall of the sensor base 1. A top cover 5 is embedded in the upper end of the inner wall of the sealing ring 4. The top cover 5 is mounted on the top of the clamped beam 2.

[0030] Two symmetrically arranged pressing blocks 6 are provided on both upper ends of the sealing ring 4 through an elastic support mechanism. The two pressing blocks 6 are arranged with inclined surfaces on the sides close to each other. The two pressing blocks 6 are covered on the top of the top cover 5.

[0031] When the sensing device is in use, the top cover 5 is arranged in the sealing ring 4. At this time, the top cover 5 is located on the top of the fixing beam 2, is packaged with the fixing beam 2, and is squeezed by the pressure block 6, which can ensure the overall packaging sealing of the sensing device. At this time, high-sensitivity biochemical detection can be performed through the fixing beam 2 and the piezoresistor 3. At the same time, when the sensing device needs to be disassembled, the two pressure blocks 6 can be pushed to separate the pressure blocks 6 from the top cover 6, and the top cover 6 can be pulled out from the sealing ring 4, so that the sensing device can be easily repaired.

[0032] Example 2

[0033] In order to stably set the top cover 5 on the top of the fixed beam 2 and complete the packaging, the embodiment 2 is based on the embodiment 1. Figure 1-2 and Figure 4 As shown, the elastic support mechanism includes a spring 7, movable grooves are provided on the upper ends of both sides of the inner wall of the sealing ring 4, the pressure block 6 is slidably arranged in the movable groove, and a guide block 8 is fixedly penetrated inside the pressure block 6, and guide grooves are provided on both sides of the inner wall of the movable groove, and the end of the guide block 8 is slidably arranged in the guide groove. The spring 7 is located in the guide groove, and its two ends are fixedly connected to the inner wall of the guide groove and the guide block 8 respectively.

[0034] When the top cover 5 is arranged in the sealing ring 4, the top cover 5 begins to cooperate with the inclined surface of the pressure block 6 during the continuous downward movement to push the pressure block 6, so that the pressure block 6 moves laterally through the sliding support of the guide groove of the guide block 8. At this time, the spring 7 is squeezed, and when the top cover 5 contacts the top of the fixed support beam 2, the pressure block 6 quickly rebounds and covers the top of the top cover 5 under the elastic force of the spring 7, fixing the position of the top cover 5 and cooperating with the sealing ring 4 to complete the packaging work of the sensor device.

[0035] Example 3

[0036] Example 3 is based on Example 1-2, in order to be able to push the pressing block 6 out of the moving groove and complete the disassembly of the sensor device, such as Figure 1 and Figure 3-4 As shown, a push-and-separate mechanism is provided on the top of the top cover 5, and the push-and-separate mechanism includes a vertical rod 10, which is fixed on the top of the top cover 5, and a push plate 11 is rotatably sleeved on the outer wall of the vertical rod 10, and two symmetrically arranged rotating buckle grooves 9 are provided on the top of the push plate 11. The push plate 11 contacts and cooperates with the sides of the two pressure blocks 6, and a push inclined surface 12 is provided on the side of the push plate 11 close to the pressure block 6.

[0037] When the sensing device needs to be inspected and repaired, the push plate 11 can be rotated through the two rotating buckle grooves 9. At this time, the push plate 11 starts to rotate on the support of the vertical rod 10. At this time, the side of the pressure block 6 can be pushed by the pushing inclined surfaces 12 on both sides of the push plate 11, so that the pressure block 6 is pushed and stably enters the moving groove. When the end of the push plate 11 contacts the notch of the moving groove, the pressure block 6 is away from the top cover 5. At this time, the top cover 5 can be pulled out of the sealing ring 4 through the push plate 11, so that the internal fixed support beam 2 of the sensing device is exposed, which is convenient for quick inspection and maintenance.

[0038] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-sensitivity biochemical detection micro double-end fixed-beam sensor device, comprising a sensor base (1) and a fixed-beam (2) fixed on the top of the sensor base (1), characterized in that: The upper ends of both sides of the fixed support beam (2) are fixedly provided with a piezoresistors (3); the outer wall of the sensing base (1) is fixedly sleeved with a sealing ring (4); the upper end of the inner wall of the sealing ring (4) is contacted and embedded with a top cover (5); the top cover (5) is provided on the top of the fixed support beam (2); Two symmetrically arranged pressure blocks (6) are provided at the upper ends of both sides of the sealing ring (4) via an elastic support mechanism, and the two pressure blocks (6) are covered on the top of the top cover (5); The top of the top cover (5) is provided with a pushing and separating mechanism.

2. The high-sensitivity biochemical detection micro double-clamped beam sensor device according to claim 1, characterized in that: The elastic support mechanism includes a spring (7), and movable grooves are provided at the upper ends of both sides of the inner wall of the sealing ring (4). The pressure block (6) is slidably arranged in the movable groove. A guide block (8) is fixedly penetrated inside the pressure block (6). Guide grooves are provided at both sides of the inner wall of the movable groove. The end of the guide block (8) is slidably arranged in the guide groove. The spring (7) is located in the guide groove, and its two ends are fixedly connected to the inner wall of the guide groove and the guide block (8) respectively.

3. The high-sensitivity biochemical detection micro double-clamped beam sensor device according to claim 1, characterized in that: The two pressing blocks (6) are arranged with inclined surfaces on the sides close to each other.

4. The high-sensitivity biochemical detection micro double-clamped beam sensor device according to claim 1, characterized in that: The pushing and separating mechanism comprises a vertical rod (10), which is fixed on the top of the top cover (5). A push plate (11) is rotatably sleeved on the outer wall of the vertical rod (10), and the push plate (11) contacts and cooperates with the sides of the two pressing blocks (6).

5. The high-sensitivity biochemical detection micro double-clamped beam sensor device according to claim 4, characterized in that: A pushing inclined surface (12) is provided on one side of the push plate (11) close to the pressing block (6).

6. The high-sensitivity biochemical detection micro double-clamped beam sensor device according to claim 4, characterized in that: Two symmetrically arranged rotating buckle grooves (9) are provided on the top of the push plate (11).

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