Waterproof piezoelectric ceramic sensor
By designing a multi-layer structure at the output end of the piezoelectric ceramic sensor, including a combination of waterproof shell and high-performance materials, the problem of the sensor's connection parts in humid environments is solved, and the waterproofness and service life are achieved.
Patent Information
- Application Number
- CN202421469144.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-26
AI Technical Summary
When used in humid environments, the connection parts are prone to aging, wear and breaking, resulting in water leakage and affecting the normal operation of the sensor.
A waterproof piezoelectric ceramic sensor is designed. By setting a multi-layer structure at the output end, including a waterproof shell, a polycarbonate protective cover, a connecting sleeve and a bottom sleeve, as well as a K11 flexible waterproof slurry and PE waterproof membrane material, a tough elastic waterproof membrane is formed to enhance the toughness, wear resistance, sealing and waterproofness of the connection parts.
Through the multi-layer structure design, the waterproofness and service life of the sensor connection parts are significantly improved, water leakage is avoided, and the sensor can work normally in humid environments.
Smart Images
Figure CN222671268U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of piezoelectric ceramic sensors, in particular to a waterproof piezoelectric ceramic sensor. Background Art
[0002] The main working principle of piezoelectric ceramic sensors is the positive piezoelectric effect. After being acted upon by external force, the charge generated can only be stored when the circuit has an infinite input impedance, which is not the case in reality. Therefore, piezoelectric ceramic sensors can only be used to measure and sense dynamic or quasi-static stress. Existing piezoelectric ceramic sensors are suitable for various humid environments because of their waterproof housing.
[0003] However, since the connection between the output wire of the piezoelectric ceramic sensor and the piezoelectric ceramic sensor body is directly covered with a layer of waterproof plastic for protection, water leakage often occurs during use due to aging, wear, and cracking of the connection parts, causing the sensor to be damaged and unable to work normally. Utility Model Content
[0004] The purpose of the utility model is to provide a waterproof piezoelectric ceramic sensor. A multi-layer structure is arranged at the output end of the piezoelectric ceramic sensor, which greatly enhances the toughness, wear resistance, sealing and waterproofness of the connection part. The internal structure is simple, solid and durable, which greatly prolongs the service life of the piezoelectric ceramic sensor.
[0005] To achieve the above-mentioned purpose, a waterproof piezoelectric ceramic sensor is provided, comprising: a waterproof shell, a piezoelectric ceramic sensor body is arranged inside the waterproof shell, an output end is fixedly connected to the bottom of the piezoelectric ceramic sensor body, a mounting plate is fixedly connected to the bottom of the waterproof shell, a protective sleeve is fixedly connected to the bottom of the mounting plate, a connecting sleeve is fixedly connected to the bottom of the protective sleeve, the connecting sleeve is conical, a bottom sleeve is fixedly connected to the bottom of the connecting sleeve, a filling port is arranged on the conical surface of the connecting sleeve, an air bag is arranged inside the protective sleeve, an air nozzle is fixedly connected to the circumferential surface of the air bag, an air valve is fixedly connected to the circumferential surface of the air nozzle, and a filler is fixedly connected to the inside of the connecting sleeve.
[0006] According to the waterproof piezoelectric ceramic sensor, the protective cover, connecting cover and bottom cover are all made of polycarbonate, which is a plastic material with high toughness and high impact strength, and also has high chemical corrosion resistance, strong wear resistance and insulation.
[0007] According to the waterproof piezoelectric ceramic sensor, the filler is K11 flexible waterproof slurry, which is a two-component, acrylic high polymer modified waterproof material. The powder and additives are mixed to produce a chemical reaction to form a tough elastic waterproof film. The film has good adhesion and can form a tight and firm permanent bond around it to prevent water penetration.
[0008] According to the waterproof piezoelectric ceramic sensor, the airbag is made of PE waterproof film material, and the PE waterproof film has the characteristics of high mechanical strength, aging resistance, strong puncture resistance, large friction coefficient, flexibility, and corrosion resistance.
[0009] According to the waterproof piezoelectric ceramic sensor, the output end passes through the mounting plate, the filling material and the bottom sleeve in sequence from top to bottom.
[0010] The above scheme has the beneficial effects of: by arranging a waterproof shell, a piezoelectric ceramic sensor body, an output end, a mounting plate, a protective cover, a connecting cover, a bottom cover, a filling port, an air bag, an air nozzle, an air valve and a filling material, a multi-layer structure is arranged at the output end of the piezoelectric ceramic sensor, which greatly enhances the toughness, wear resistance, sealing and waterproofness of the connecting part, and the internal structure is simple, solid and durable, which greatly extends the service life of the piezoelectric ceramic sensor.
[0011] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments;
[0013] Figure 1 This is a front view of a waterproof piezoelectric ceramic sensor of the utility model;
[0014] Figure 2 This is a cross-sectional view of a waterproof piezoelectric ceramic sensor of the utility model;
[0015] Figure 3 It is a front view of a waterproof piezoelectric ceramic sensor of the utility model.
[0016] Legend:
[0017] 1. Waterproof shell; 2. Piezoelectric ceramic sensor body; 3. Output end; 4. Mounting plate; 5. Protective cover; 6. Connecting cover; 7. Bottom cover; 8. Filling port; 9. Air bag; 10. Air nozzle; 11. Air valve; 12. Filling material. DETAILED DESCRIPTION
[0018] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0019] Reference Figure 1-3 The utility model embodiment is a waterproof piezoelectric ceramic sensor, which includes: a waterproof shell 1, a piezoelectric ceramic sensor body 2 is arranged inside the waterproof shell 1, the bottom of the piezoelectric ceramic sensor body 2 is fixedly connected with an output terminal 3, the bottom of the waterproof shell 1 is fixedly connected with a mounting plate 4 for mounting the piezoelectric ceramic sensor body 2, a protective sleeve 5 is fixedly connected to the bottom of the mounting plate 4, a connecting sleeve 6 is fixedly connected to the bottom of the protective sleeve 5, the connecting sleeve 6 is conical, and the bottom of the connecting sleeve 6 is fixedly connected with a bottom sleeve 7, the protective sleeve 5, the connecting sleeve 6 and the bottom sleeve 7 are all made of polycarbonate, which is a plastic material with high toughness and high impact strength, and also has high strength chemical corrosion resistance, strong wear resistance and insulation, etc. A filling port 8 is arranged on the conical surface of the connecting sleeve 6, and an airbag is arranged inside the protective sleeve 5 9. The airbag 9 is made of PE waterproof film material. The PE waterproof film has the characteristics of high mechanical strength, aging resistance, strong puncture resistance, large friction coefficient, flexibility, and corrosion resistance. When inflated, it can form a seal and waterproof protection for the connection parts to prevent sharp objects from causing damage to the internal structure. An air nozzle 10 is fixedly connected to the circumferential surface of the airbag 9, and an air valve 11 is fixedly connected to the circumferential surface of the air nozzle 10. A filler 12 is fixedly connected to the inside of the connecting sleeve 6. The filler 12 is K11 flexible waterproof slurry. K11 flexible waterproof slurry is a two-component, acrylic high polymer modified waterproof material. The powder and additives are mixed to produce a chemical reaction to form a tough elastic waterproof film. The film has good adhesion and can form a tight and firm permanent bond around to prevent water penetration and improve the sealing and waterproof properties of the sensor.
[0020] The output end 3 passes through the mounting plate 4, the filling material 12 and the bottom sleeve 7 in sequence from top to bottom.
[0021] Working principle: Fill air into the airbag 9 from the air nozzle 10 to expand the airbag 9, thereby forming double protection and having good toughness. Fill the filler 12 into the connecting sleeve 6 from the filling port 8, so that the filler 12 forms a tough elastic waterproof film inside the connecting sleeve 6. The film has good adhesion and can form a tight and firm permanent bond around to prevent water penetration, thereby forming a tight, solid, tough, highly waterproof, highly wear-resistant and sealed structure between the output end wire of the electric ceramic sensor and the piezoelectric ceramic sensor body, greatly improving the service life of the sensor.
[0022] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. A waterproof piezoelectric ceramic sensor, comprising: A waterproof housing (1), characterized in that a piezoelectric ceramic sensor body (2) is arranged inside the waterproof housing (1), an output end (3) is fixedly connected to the bottom of the piezoelectric ceramic sensor body (2), a mounting plate (4) is fixedly connected to the bottom of the waterproof housing (1), a protective sleeve (5) is fixedly connected to the bottom of the mounting plate (4), a connecting sleeve (6) is fixedly connected to the bottom of the protective sleeve (5), the connecting sleeve (6) is conical, a bottom sleeve (7) is fixedly connected to the bottom of the connecting sleeve (6), a filling port (8) is arranged on the conical surface of the connecting sleeve (6), an air bag (9) is arranged inside the protective sleeve (5), an air nozzle (10) is fixedly connected to the circumferential surface of the air bag (9), an air valve (11) is fixedly connected to the circumferential surface of the air nozzle (10), and a filling material (12) is fixedly connected to the inside of the connecting sleeve (6).
2. A waterproof piezoelectric ceramic sensor according to claim 1, characterized in that: The protective sleeve (5), the connecting sleeve (6) and the bottom sleeve (7) are all made of polycarbonate.
3. The waterproof piezoelectric ceramic sensor according to claim 1, characterized in that: The filler (12) is K11 flexible waterproof slurry.
4. The waterproof piezoelectric ceramic sensor according to claim 1, characterized in that: The airbag (9) is made of PE waterproof film material.
5. The waterproof piezoelectric ceramic sensor according to claim 1, characterized in that: The output end (3) passes through the mounting plate (4), the filling material (12) and the bottom sleeve (7) in sequence from top to bottom.