A high-precision micro-pressure sensor easy to assemble

Abstract

This utility model discloses an easily assembled high-precision micro-pressure sensor, including a housing. A sensor element is disposed on the top of the housing, and pins are electrically connected to both sides of the bottom of the sensor element. The bottom of the housing is hollowed out, and the bottom ends of the pins penetrate the housing and extend to the bottom of the housing. A support plate is disposed at the bottom of the housing, located inside the pins and slidably connected to them. A bracket is fixedly connected to the bottom of the housing, and a bolt is disposed at the bottom of the bracket. The top end of the bolt penetrates the bracket and extends to the bottom of the support plate, and the bolt is threadedly connected to the bracket. This utility model forms a dynamic guiding channel through the sliding engagement of the support plate and the pins. During installation, the pins are always controlled to move vertically, completely avoiding the problem of lateral compression and bending of the pins caused by angular deviations in traditional plug-in connections.

Description

Technical Field

[0001] This utility model relates to the field of micro-pressure sensor technology, specifically to a high-precision micro-pressure sensor that is easy to assemble. Background Technology

[0002] A micro-pressure sensor is a device specifically designed to measure very small pressure changes or differential pressures. It can detect subtle changes that other sensors might miss, such as small fluctuations in airflow in a room or minor leaks in pipes.

[0003] For example, patent application number 201720350151.9 published on the China Patent Network, entitled "A High-Stability, High-Sensitivity Monolithic Silicon-Based Micro-Pressure Sensor," includes a high-stability, high-sensitivity monolithic silicon-based micro-pressure sensor body, a waterproof protection device, a drop-proof protection device, an installation device, and a high-precision positioning device. The high-stability, high-sensitivity monolithic silicon-based micro-pressure sensor body is installed in the middle of the drop-proof protection device via the waterproof protection device. The installation device and the high-precision positioning device are threaded to the left and right sides of the high-stability, high-sensitivity monolithic silicon-based micro-pressure sensor body, respectively. The waterproof protective cover and waterproof protective shell of this utility model help ensure that the micro-pressure sensor can work in humid environments and provide waterproofing. The installation plate, installation precision positioning holes, and multi-directional installation holes improve installation efficiency, facilitate installation, enhance installation accuracy, make it more convenient to use, and promote its widespread adoption.

[0004] However, the existing sensor installation method is relatively simple, mainly through plug-in connection. When the sensor bottom pins pass through the housing, they are prone to being squeezed and bent due to changes in plug-in accuracy, which affects the subsequent use effect.

[0005] Therefore, it is necessary to redesign and modify the high-precision micro-pressure sensor that is easy to assemble. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide an easy-to-assemble high-precision micro-pressure sensor. It has the advantage of being easy to assemble and solves the problem that the installation method of existing sensors is relatively simple, mainly connected by plug-in. However, when the bottom pin of the sensor passes through the housing, it is easy to be squeezed and bent due to changes in plug-in accuracy, which affects the subsequent use effect.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an easy-to-assemble high-precision micro-pressure sensor, including a housing;

[0008] A sensor element is provided on the top of the housing. Pins are electrically connected to both sides of the bottom of the sensor element. The bottom of the housing is hollowed out. The bottom end of the pins penetrates the housing and extends to the bottom of the housing. A support plate is provided on the bottom of the housing. The support plate is located inside the pins and is slidably connected to the pins.

[0009] As a preferred embodiment of this utility model, a bracket is fixedly connected to the bottom of the housing, and a bolt is provided at the bottom of the bracket. The top end of the bolt passes through the bracket and extends to the bottom of the support plate, and the bolt is threadedly connected to the bracket.

[0010] As a preferred embodiment of this invention, the surface of the bracket is connected to a storage frame, and the bolt is embedded inside the storage frame.

[0011] In a preferred embodiment of this invention, the top end of the bolt extends into the interior of the support plate and is movably connected to the support plate via a bearing.

[0012] As a preferred embodiment of this utility model, connecting blocks are fixedly connected to both the left and right sides of the housing, and extension plates are movably connected to both sides of the surface of the connecting blocks via pins. A sealing plate is fixedly connected to the side of the extension plate away from the connecting blocks, and the sealing plate is located outside the pin and fits against the support plate.

[0013] In a preferred embodiment of this invention, conical barrels are fixedly connected to the surfaces of both the sealing plate and the support plate, with the inner sides of the conical barrels in contact with each other, and the conical barrels surrounding and wrapping around the surface of the pin.

[0014] As a preferred embodiment of this utility model, a force-bearing rod is fixedly connected to the outer side of the extension plate, and a pressing rod is fixedly connected to both sides of the bottom of the support plate. The pressing rod extends to the inner side of the force-bearing rod on the side away from the support plate and is slidably connected to the force-bearing rod.

[0015] As a preferred embodiment of this utility model, a compression spring sleeved on the surface of a bolt is fixedly connected to the bottom of the support plate, and the side of the compression spring away from the support plate contacts the top of the storage frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model forms a dynamic guide channel through the sliding fit between the support plate and the pin. During installation, the pin is always moved in a controlled vertical direction, which completely avoids the problem of lateral compression and bending of the pin caused by angular deviation in traditional plugging.

[0018] 2. This utility model uses bolts to drive the support plate to rise and fall vertically, which makes it easy for users to adjust and fix the support plate, while ensuring the connection stability of the support plate.

[0019] 3. This utility model uses a storage frame to store bolts, which reduces the space occupied by bolts and ensures that the bottom of the bracket is level.

[0020] 4. By movably connecting the bolt and the support plate, this utility model facilitates the vertical lifting and lowering of the support plate by the bolt, thus preventing the support plate from rotating with the bolt.

[0021] 5. By setting a sealing plate, this utility model can further improve the fixing effect of the support plate and prevent the pins from tilting outward.

[0022] 6. By setting a conical barrel, this utility model can fix the pin and tightly wrap around the pin, ensuring long-term sealing reliability.

[0023] 7. By setting up force-bearing rods and compression rods, this utility model can utilize the power of the support plate, saving the operation steps of fixing the sealing plate.

[0024] 8. By setting a compression spring, this utility model can support the support plate and reduce the impact of vibration on the support plate. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0027] Figure 3 This is a schematic diagram of the structural separation of this utility model viewed from below;

[0028] Figure 4 This is a top view schematic diagram of the structural separation of this utility model;

[0029] Figure 5 This is a schematic diagram of a partial structural separation of the present invention;

[0030] Figure 6 This is a schematic diagram showing the separation of the main view of a partial structure of this utility model.

[0031] In the diagram: 1. Housing; 2. Sensor element; 3. Pin; 4. Support plate; 5. Bracket; 6. Bolt; 7. Storage frame; 8. Connecting block; 9. Extension plate; 10. Sealing plate; 11. Conical barrel; 12. Force rod; 13. Compression rod; 14. Compression spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figures 1 to 6 As shown, the present invention provides an easy-to-assemble high-precision micro-pressure sensor, including a housing 1;

[0034] A sensor element 2 is provided on the top of the housing 1. Pins 3 are electrically connected to both sides of the bottom of the sensor element 2. The bottom of the housing 1 is hollowed out. The bottom end of the pins 3 passes through the housing 1 and extends to the bottom of the housing 1. A support plate 4 is provided on the bottom of the housing 1. The support plate 4 is located inside the pins 3 and is slidably connected to the pins 3.

[0035] refer to Figure 2 A bracket 5 is fixedly connected to the bottom of the housing 1. A bolt 6 is provided at the bottom of the bracket 5. The top of the bolt 6 passes through the bracket 5 and extends to the bottom of the support plate 4. The bolt 6 is threadedly connected to the bracket 5.

[0036] As a technical optimization of this utility model, by setting bolts 6 to drive the support plate 4 to rise and fall vertically, it is convenient for users to adjust and fix the support plate 4, while ensuring the connection stability of the support plate 4.

[0037] refer to Figure 4 The surface of the bracket 5 is connected to the storage frame 7, and the bolt 6 is embedded inside the storage frame 7.

[0038] As a technical optimization of this utility model, by setting up a storage frame 7 to store the bolts 6, the space occupied by the bolts 6 can be reduced, and the bottom of the bracket 5 can be kept horizontal.

[0039] refer to Figure 3 The top of bolt 6 extends into the interior of support plate 4 and is movably connected to support plate 4 via bearing.

[0040] As a technical optimization of this utility model, by movably connecting the bolt 6 to the support plate 4, it is possible for the bolt 6 to carry the support plate 4 vertically up and down, thus preventing the support plate 4 from rotating with the bolt 6.

[0041] refer to Figure 5 Connecting blocks 8 are fixedly connected to the left and right sides of the housing 1. Extension plates 9 are movably connected to both sides of the surface of the connecting blocks 8 via pins. A sealing plate 10 is fixedly connected to the side of the extension plate 9 away from the connecting blocks 8. The sealing plate 10 is located outside the pin 3 and is in contact with the support plate 4.

[0042] As a technical optimization of this utility model, by setting the sealing plate 10, the fixing effect of the support plate 4 can be further improved, and the pin 3 can be prevented from tilting outward.

[0043] refer to Figure 5 Conical barrels 11 are fixedly connected to the surfaces of the sealing plate 10 and the support plate 4. The inner sides of the conical barrels 11 are in contact with each other, and the conical barrels 11 surround and wrap around the surface of the pin 3.

[0044] As a technical optimization of this utility model, by setting the cone barrel 11, the pin 3 can be fixed, and the pin 3 can be tightly wrapped around its periphery to ensure long-term sealing reliability.

[0045] refer to Figure 3 A force-bearing rod 12 is fixedly connected to the outer side of the extension plate 9, and a pressing rod 13 is fixedly connected to both sides of the bottom of the support plate 4. The pressing rod 13 extends to the inner side of the force-bearing rod 12 on the side away from the support plate 4 and is slidably connected to the force-bearing rod 12.

[0046] As a technical optimization of this utility model, by setting the force-bearing rod 12 and the compression rod 13, the power of the support plate 4 can be utilized, saving the operation steps of fixing the sealing plate 10.

[0047] refer to Figure 4 A compression spring 14 is fixedly connected to the bottom of the support plate 4 and sleeved on the surface of the bolt 6. The side of the compression spring 14 away from the support plate 4 contacts the top of the storage frame 7.

[0048] As a technical optimization of this utility model, by setting the compression spring 14, the support plate 4 can be supported, which can reduce the impact of vibration on the support plate 4.

[0049] The working principle and usage process of this utility model are as follows: The operator roughly aligns the sensor pin 3 with the target insertion position, and then inserts the sensor into the inside of the housing 1, with the pin 3 penetrating through the housing 1. When the sensor is inserted, the support plate 4 is driven to move upward by rotating the bolt 6. During the movement of the support plate 4, the length of the extended pin 3 is adjusted by sliding connection. At the same time, the conical barrel 11 on the surface can be used to squeeze the pin 3 to ensure that it is axially perpendicular. During the movement of the support plate 4, the squeezing rod 13 can be moved synchronously. When the squeezing rod 13 contacts the force rod 12, the force rod 12 is squeezed and drives the extension rod to swing around the pin on the surface of the connecting block 8. The sealing plate 10 on the surface of the extension rod flips and moves to the outside of the pin 3. When the conical barrel 11 on the surface of the sealing plate 10 and the conical barrel 11 on the surface of the support plate 4 are in contact with each other and completely wrapped around the surface of the pin 3, the pin 3 is limited and its placement angle is automatically adjusted.

[0050] In summary, this easy-to-assemble high-precision micro-pressure sensor forms a dynamic guide channel through the sliding fit between the support plate 4 and the pin 3. During installation, the pin 3 is always moved in a controlled vertical direction, completely avoiding the problem of lateral compression and bending of the pin 3 caused by angular deviation in traditional plug-in connections.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision micro-pressure sensor that is easy to assemble, comprising a housing (1); Its features are: A sensor element (2) is provided on the top of the housing (1). Pins (3) are electrically connected to both sides of the bottom of the sensor element (2). The bottom of the housing (1) is hollowed out. The bottom end of the pin (3) passes through the housing (1) and extends to the bottom of the housing (1). A support plate (4) is provided at the bottom of the housing (1). The support plate (4) is located inside the pin (3) and is slidably connected to the pin (3).

2. The easily assembled high-precision micro-pressure sensor according to claim 1, characterized in that: The bottom of the housing (1) is fixedly connected to a bracket (5), and a bolt (6) is provided at the bottom of the bracket (5). The top of the bolt (6) passes through the bracket (5) and extends to the bottom of the support plate (4). The bolt (6) is threadedly connected to the bracket (5).

3. The easily assembled high-precision micro-pressure sensor according to claim 2, characterized in that: The surface of the bracket (5) is connected to the storage frame (7), and the bolt (6) is embedded inside the storage frame (7).

4. The easily assembled high-precision micro-pressure sensor according to claim 2, characterized in that: The top of the bolt (6) extends into the interior of the support plate (4) and is movably connected to the support plate (4) via a bearing.

5. The easily assembled high-precision micro-pressure sensor according to claim 2, characterized in that: Connecting blocks (8) are fixedly connected to both the left and right sides of the housing (1). Extension plates (9) are movably connected to both sides of the surface of the connecting blocks (8) via pins. A sealing plate (10) is fixedly connected to the side of the extension plate (9) away from the connecting blocks (8). The sealing plate (10) is located outside the pin (3) and is in contact with the support plate (4).

6. The easily assembled high-precision micro-pressure sensor according to claim 5, characterized in that: Both the sealing plate (10) and the support plate (4) are fixedly connected with cone barrels (11), the inner sides of the cone barrels (11) are in contact with each other, and the cone barrels (11) surround and wrap around the surface of the pin (3).

7. The easily assembled high-precision micro-pressure sensor according to claim 5, characterized in that: A force-bearing rod (12) is fixedly connected to the outer side of the extension plate (9), and a pressing rod (13) is fixedly connected to both sides of the bottom of the support plate (4). The pressing rod (13) extends to the inner side of the force-bearing rod (12) from the side away from the support plate (4) and is slidably connected to the force-bearing rod (12).

8. The easily assembled high-precision micro-pressure sensor according to claim 3, characterized in that: The bottom of the support plate (4) is fixedly connected to a compression spring (14) sleeved on the surface of the bolt (6), and the side of the compression spring (14) away from the support plate (4) contacts the top of the storage frame (7).

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