Piezoelectric dynamic pressure sensor
By designing a structure including a housing, an upper connecting seat, a lower connecting base, a convex column and a spring in a piezoelectric dynamic pressure sensor, the measurement accuracy problem caused by loose threaded connection is solved, and a more stable connection and higher measurement accuracy is achieved.
Patent Information
- Application Number
- CN202420894504.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-28
AI Technical Summary
After the piezoelectric dynamic pressure sensor is subjected to dynamic pressure, the threaded connection may be loose, resulting in the connection being not tight, introducing additional mechanical stress, affecting the measurement accuracy.
A piezoelectric dynamic pressure sensor is designed including a housing, an upper connecting base, a lower connecting base, a convex column and a spring. Through the compression of the spring, the lower connecting base and the screw teeth of the upper connecting base are formed in a tight connection, increasing the connection stability of the sensor.
It effectively increases the connection stability of the sensor, reduces mechanical stress, and improves measurement accuracy.
Smart Images
Figure CN222689304U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sensors, in particular to a piezoelectric dynamic pressure sensor. Background Art
[0002] A pressure sensor is a device or apparatus that can sense pressure signals and convert them into usable output electrical signals according to certain rules. Threaded connection is one of the main installation methods of piezoelectric dynamic pressure sensors, and its quality and reliability directly affect the performance of the sensor. When these sensors are subjected to dynamic pressure, the connecting threads may loosen, resulting in a loose connection. This looseness will introduce additional mechanical stress, causing the sensor to be disturbed during measurement, thereby affecting its measurement accuracy. In view of this, a piezoelectric dynamic pressure sensor is proposed. Utility Model Content
[0003] In order to solve at least one of the above technical shortcomings, the utility model provides a piezoelectric dynamic pressure sensor, including a shell, an upper connecting seat is arranged at the bottom of the shell, and a lower connecting base is arranged at the bottom of the upper connecting seat to increase the connection stability.
[0004] Furthermore, a lower screw thread is provided on the outer wall of the lower connecting base, and a hollow protruding column is also provided above the lower connecting base.
[0005] Furthermore, a matching spring is arranged in the convex column, a cavity is arranged at the bottom of the upper connecting seat, and an upper thread is arranged on the outer wall of the upper connecting seat, and the top of the spring is connected to the top of the cavity.
[0006] Furthermore, the inner diameter of the cavity is equal to the outer diameter of the protruding column, and the upper thread and the lower thread are the same.
[0007] Beneficial effect: When it is necessary to use a piezoelectric sensor for dynamic pressure testing, the outer shell is pressed down with force, and the spring arranged in the hollow boss presses down in the cavity and gradually makes the upper end surface of the lower connecting base flush with the lower end surface of the upper connecting seat, so that the upper thread of the upper connecting seat is connected with the lower thread of the lower connecting seat, and then screwed into the place where connection is required, so as to further increase the connection stability of the sensor.
[0008] The realization of the purpose, functional features and advantages of the present invention will be further described in conjunction with embodiments and with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0010] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model.
[0011] exist Figure 1 to Figure 2, the corresponding relationship between the component names or lines and the figure numbers is: housing 1, upper connecting base 2, upper screw thread 201, cavity 202, lower connecting base 3, lower screw thread 301, boss 302, spring 303. DETAILED DESCRIPTION
[0012] Please refer to Figure 1 to Figure 2 ;
[0013] This embodiment provides a piezoelectric dynamic pressure sensor, including a housing 1, an upper connecting seat 2 is disposed at the bottom of the housing 1, and a lower connecting base 3 for increasing the connection stability is disposed at the bottom of the upper connecting seat 2; Figure 1 and Figure 2 , a lower screw thread 301 is arranged on the outer wall of the lower connecting base 3, and a hollow boss 302 is also arranged above the lower connecting base 3, and a matching spring 303 is arranged in the boss 302, a cavity 202 is arranged at the bottom of the upper connecting seat 2, and an upper screw thread 201 is arranged on the outer wall of the upper connecting seat 2, the top of the spring 303 is connected to the top of the cavity 202, the inner diameter of the cavity 202 is equal to the outer diameter of the boss 302, and the upper screw thread 201 has the same thread as the lower screw thread 301;
[0014] In a specific embodiment, the distance from the upper end surface of the lower connecting base 3 to the lower end surface of the upper connecting base 2 is greater than the distance from the top of the boss 302 to the bottom surface of the cavity 202. When the piezoelectric sensor needs to be used for dynamic pressure testing, the outer shell 1 is pressed down with force, and the spring 303 arranged in the hollow boss 302 presses down in the cavity 202 and gradually makes the upper end surface of the lower connecting base 3 flush with the lower end surface of the upper connecting seat 2, so that the upper screw thread 201 of the upper connecting seat 2 is connected to the lower screw thread 301 of the lower connecting seat 3, and then screwed into the place where connection is required to further increase the connection stability of the sensor.
[0015] Furthermore, electronic components constituted by sensors are arranged in the housing 1, and the specific connection method thereof will not be described in detail.
Claims
1. A piezoelectric dynamic pressure sensor, comprising a housing (1), wherein an upper connecting seat (2) is provided at the bottom of the housing (1), and characterized in that: A lower connecting base (3) capable of increasing the connection stability is arranged at the bottom of the upper connecting base (2); a lower screw thread (301) is arranged on the outer wall of the lower connecting base (3), and a hollow boss (302) is also arranged above the lower connecting base (3); a matching spring (303) is arranged in the boss (302); a cavity (202) is arranged at the bottom of the upper connecting base (2), and an upper screw thread (201) is arranged on the outer wall of the upper connecting base (2); the top of the spring (303) is connected to the top of the cavity (202); the inner diameter of the cavity (202) is equal to the outer diameter of the boss (302), and the upper screw thread (201) and the lower screw thread (301) have the same thread.