Piezoelectric detection device
By employing a support bracket and stable electrical connection design in the piezoelectric testing device, the problem of unstable fixation of the piezoelectric sheet during vibration is solved, thus improving the accuracy of the test results.
Patent Information
- Application Number
- CN202422888554.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-26
AI Technical Summary
In existing piezoelectric testing devices, it is difficult to achieve stable fixation of the piezoelectric element, which makes it easy for it to detach from the conductive wire during vibration, affecting the accuracy of the test results.
The design employs a support bracket, comprising a first ring plate, a second ring plate, and a support grid. The piezoelectric disc is supported on the support grid and the second ring plate, forming a stable support structure. The conductive wire is electrically connected to the connecting terminal through the clamping terminal.
This method achieves balance maintenance of the piezoelectric disc during vibration, avoids disconnection from the conductive wire, and improves the accuracy of the test results.
Smart Images
Figure CN223461098U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of microorganism detection technology, and more particularly to a piezoelectric detection device. BACKGROUND
[0002] For the detection of the microorganism content of food, the detection methods in the past mainly include immune detection, ELISA method, gas chromatography mass spectrometry and liquid chromatography mass spectrometry, and the above detection methods generally need to mark the target microorganism in advance, so that the pretreatment process is relatively cumbersome, and finally the detection efficiency is affected.
[0003] The piezoelectric detection device can realize quantitative detection of the target microorganism without marking the target microorganism in advance based on the piezoelectric principle. The piezoelectric detection device mainly relies on the combination of the recognition material on the surface of the piezoelectric sheet and the target microorganism, and then the corresponding change of the natural vibration frequency of the piezoelectric crystal caused by the change of the mass of the piezoelectric crystal, and finally the vibration frequency is converted into an electrical signal to realize quantitative detection of the target microorganism.
[0004] However, in most piezoelectric detection devices at present, the piezoelectric sheet is often difficult to be stably fixed, so that the piezoelectric sheet is difficult to keep balance during vibration, and even the connection with the conductive wire material is disconnected, thereby affecting the accuracy of the detection result. CONTENT OF THE UTILITY MODEL
[0005] The purpose of the present application is to provide a piezoelectric detection device, which aims to solve the problem that in most piezoelectric detection devices at present, the piezoelectric sheet is often difficult to be stably fixed, so that the piezoelectric sheet is difficult to keep balance during vibration, and even the connection with the conductive wire material is disconnected, thereby affecting the accuracy of the detection result.
[0006] To achieve the above purpose, the technical solution adopted by the present application is to provide a piezoelectric detection device, which comprises a support bracket, a piezoelectric disc and a conductive wire. The support bracket is provided with a wiring area, the piezoelectric disc is embedded on the support bracket, and the conductive wire is threaded through the wiring area and electrically connected to the piezoelectric disc. The support bracket comprises a first ring, a second ring and a support grid. The support grid is a circular structure. The second ring is annularly arranged around the outer peripheral edge of the support grid. The first ring is annularly arranged around the outer peripheral edge of the second ring. The wiring area is arranged on the first ring. The piezoelectric disc is carried on the support grid and the second ring.
[0007] In one embodiment, the first ring and the second ring cooperate to form an inwardly recessed ring table structure, and the piezoelectric disc is located in the ring table structure and carried on the support grid and the second ring.
[0008] In one of the embodiments, the piezoelectric wafer is provided with foil-shaped excitation electrodes on both sides, and the two foil-shaped excitation electrodes are provided with connecting terminals adjacent to the end of the first ring piece. Each connecting terminal is in a circular structure. The conductive wire includes two wire bodies, and each end of the two wire bodies is provided with a clamping terminal. Each clamping terminal is in a disc structure matched with the corresponding connecting terminal. The two wire bodies are respectively arranged in the wiring area, and the two clamping terminals respectively clamp the corresponding two connecting terminals to form an electrical connection.
[0009] In one of the embodiments, the wiring area includes two center-symmetric wiring through holes; or the wiring area includes two center-symmetric wiring notches.
[0010] The piezoelectric detection device provided by the application has the beneficial effects that compared with the prior art, the support bracket in the piezoelectric detection device includes a first ring piece, a second ring piece, and a support grid. The support grid is in a circular structure, the second ring piece is annularly arranged around the outer peripheral edge of the support grid, and the first ring piece is annularly arranged around the outer peripheral edge of the second ring piece. In this way, the piezoelectric wafer is stably supported on the support grid and the second ring piece, so that the piezoelectric wafer remains balanced during vibration, avoids disconnection with the conductive wire, and finally improves the accuracy of the vibration frequency measurement of the piezoelectric wafer, i.e., improves the accuracy of the detection result. BRIEF DESCRIPTION OF DRAWINGS
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.
[0012] Figure 1 A partial separation structure schematic diagram of a piezoelectric detection device provided by the application;
[0013] Figure 2 A Figure 1 A separation structure schematic diagram of a support bracket and a piezoelectric wafer in the piezoelectric detection device shown;
[0014] Figure 3 A structure schematic diagram of a support bracket in a piezoelectric detection device provided by another embodiment of the application.
[0015] In the drawings: 10, piezoelectric detection device; 100, support bracket; 110, first ring piece; 111, wiring area; 120, second ring piece; 130, support grid; 200, piezoelectric wafer; 210, foil-shaped excitation electrode; 211, connecting terminal; 300, conductive wire; 310, wire body; 311, clamping terminal. DETAILED DESCRIPTION
[0016] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0017] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.
[0018] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.
[0020] Please also refer to Figure 1 and Figure 2 , the piezoelectric detection device 10 provided in an embodiment of the present application is now described. The above-mentioned piezoelectric detection device 10 includes a support bracket 100, a piezoelectric disc 200 and a conductive wire 300, wherein the support bracket 100 is provided with a routing area 111, the piezoelectric disc 200 is embedded in the support bracket 100, and the conductive wire 300 is passed through the routing area 111 and electrically connected to the piezoelectric disc 200. Specifically, the support bracket 100 includes a first ring piece 110, a second ring piece 120 and a support grid 130, the support grid 130 is a circular structure, the second ring piece 120 is arranged around the outer edge of the support grid 130, the first ring piece 110 is arranged around the outer edge of the second ring piece 120, the routing area 111 is provided on the first ring piece 110, and the piezoelectric disc 200 is carried on the support grid 130 and the second ring piece 120 together.
[0021] The piezoelectric detection device 10 provided by the application has the beneficial effect that, compared with the prior art, the piezoelectric wafer 200 is stably supported on the support grid 130 and the second ring 120, so that the piezoelectric wafer 200 remains balanced during vibration, avoids disconnection with the conductive wire 300, and finally improves the accuracy of the vibration frequency measurement of the piezoelectric wafer 200, that is, improves the accuracy of the detection result.
[0022] Further, in another embodiment, the first ring 110 and the second ring 120 cooperate to form an inwardly recessed ring table structure (not shown), and the piezoelectric wafer 200 is located in the ring table structure and supported on the support grid 130 and the second ring 120, so that the piezoelectric wafer 200 is more firmly fixed.
[0023] Further, in the present embodiment, the piezoelectric wafer 200 is provided with foil-shaped excitation electrodes 210 on both sides, and each of the two foil-shaped excitation electrodes 210 is provided with a connecting terminal 211 adjacent to one end of the first ring 110. Each connecting terminal 211 is a circular structure, the conductive wire 300 includes two wire bodies 310, and each of the corresponding end of the two wire bodies 310 is provided with a clamping terminal 311. Each clamping terminal 311 is a disc structure matched with the corresponding connecting terminal 211. The two wire bodies 310 are respectively arranged in the wiring area 111, and the two clamping terminals 311 respectively clamp and fix the corresponding two connecting terminals 211 to form an electrical connection.
[0024] Please refer to Figure 2 and Figure 3 In the present embodiment, the wiring area 111 includes two center-symmetric wiring through holes, and the two wire bodies 310 are respectively arranged in the two wiring through holes to form a limiting position; in some other embodiments, the wiring area 111 includes two center-symmetric notches, and the two wire bodies 310 are respectively arranged in the two wiring notches to form a limiting position.
[0025] The above is only a preferred embodiment of the application and is not intended to limit the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.
Claims
1. A piezoelectric detection device, comprising a support bracket, a piezoelectric wafer and a conductive wire, the support bracket is provided with a wiring area, the piezoelectric wafer is embedded on the support bracket, the conductive wire is arranged in the wiring area and electrically connected to the piezoelectric wafer, characterized in that, The support bracket comprises a first ring piece, a second ring piece and a support grid, the support grid is a circular structure, the second ring piece is annularly arranged around the outer peripheral edge of the support grid, the first ring piece is annularly arranged around the outer peripheral edge of the second ring piece, the wiring area is arranged on the first ring piece, and the piezoelectric disc is carried on the support grid and the second ring piece.
2. The piezoelectric detection device according to claim 1, characterized by The first ring piece and the second ring piece cooperate to form an inwardly recessed ring table structure, and the piezoelectric disc is located in the ring table structure and carried on the support grid and the second ring piece.
3. The piezoelectric detection device according to claim 1, wherein The piezoelectric disc is respectively provided with a foil-shaped excitation electrode on the front and back surfaces, the two foil-shaped excitation electrodes are respectively provided with a connecting terminal adjacent to one end of the first ring piece, each connecting terminal is a circular structure, the conductive wire includes two wire bodies, one end of each wire body is provided with a clamping terminal, each clamping terminal is a disc structure matched with the corresponding connecting terminal, the two wire bodies are respectively arranged in the wiring area, and the two clamping terminals are respectively clamped to fix the two connecting terminals to form an electrical connection.
4. The piezoelectric detection device according to claim 3, characterized by The wiring area comprises two center-symmetric wiring through holes; or the wiring area comprises two center-symmetric wiring notches.