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CN-224231162-U - Pressure sensor test fixture

CN224231162UCN 224231162 UCN224231162 UCN 224231162UCN-224231162-U

Abstract

The utility model provides a pressure sensor testing fixture which comprises a base arranged on a pressure sensor detecting instrument, wherein a first limit groove is formed in the center of the base, an annular limit structure is arranged in the first limit groove, the annular limit structure comprises a mounting annular table arranged in the base, a supporting table for supporting the pressure sensor is arranged in the mounting annular table, a plurality of clamping jaws are fixedly connected onto the mounting annular table, limiting blocks are slidably arranged on the inner sides of the clamping jaws, the clamping jaws and the limiting blocks are of arc structures, the limiting blocks are slidably connected with the clamping jaws, and the limiting blocks are used for limiting horizontal displacement of the pressure sensor. The stopper can be installed fast and demolishd, to the brace table and the quick detach stopper of the pressure sensor selection adaptation of different models, the pressure sensor of different models of adaptation avoids pressure sensor to bear more pressure because of the discomfort, and overall structure compares in the required space of mechanical mechanism.

Inventors

  • Cheng Juanhong

Assignees

  • 西安文翔数控刀具有限公司

Dates

Publication Date
20260512
Application Date
20250507

Claims (8)

  1. 1. The utility model provides a pressure sensor test fixture, includes base (1) that sets up on pressure sensor detecting instrument, its characterized in that, first spacing groove (2) have been seted up at base (1) center, first spacing groove (2) are inside to be equipped with annular limit structure (3), annular limit structure (3) are including setting up in installing annular platform (5) in base (1), be provided with supporting bench (7) that are used for supporting pressure sensor in installing annular platform (5), fixedly connected with a plurality of clamping jaw (4) on installing annular platform (5), every clamping jaw (4) inboard slip is provided with stopper (8), clamping jaw (4) with stopper (8) are arc structure, stopper (8) with clamping jaw (4) sliding connection, stopper (8) are used for limiting pressure sensor horizontal displacement.
  2. 2. The pressure sensor testing fixture according to claim 1, wherein a chute (9) is formed in the inner side of each clamping jaw (4), the limiting block (8) is slidably arranged in the chute (9), and the limiting block (8) is adaptive to the chute (9).
  3. 3. A pressure sensor testing fixture according to claim 2, characterized in that a first magnetic patch (16) is arranged in the chute (9), a second magnetic patch (17) is arranged at a position of the stopper (8) corresponding to the first magnetic patch (16), and the first magnetic patch (16) and the second magnetic patch (17) are opposite in magnetism.
  4. 4. The pressure sensor testing fixture according to claim 2, wherein the chute (9) comprises a horizontal chute (10) and a vertical chute (11), the horizontal chute (10) is arranged on the inner side surface of the clamping jaw (4), and the vertical chute (11) is arranged at the bottom of the tail end of the horizontal chute (10).
  5. 5. A pressure sensor testing fixture according to claim 1, characterized in that the mounting ring table (5) is provided with a second limit groove (6) for the passage of a cable of a pressure sensor.
  6. 6. The pressure sensor testing fixture according to claim 1, wherein a plurality of third limit grooves (12) are uniformly formed in the mounting ring table (5), a plurality of limit pins (13) are arranged at the bottom of each clamping jaw (4), each limit pin (13) is arranged in the corresponding third limit groove (12) in a penetrating mode, a third magnetic patch (14) is arranged at the bottom of each limit pin (13), a fourth magnetic patch (15) is arranged at the bottom of each third limit groove (12), and the magnetic properties of the third magnetic patch (14) are opposite to those of the fourth magnetic patch (15).
  7. 7. A pressure sensor testing fixture according to claim 1, characterized in that the support table (7) is provided with a plurality of semiconductor dice (18), the semiconductor dice (18) being connected to a direct current power supply.
  8. 8. A pressure sensor testing fixture according to claim 7, characterized in that the side surface of the base (1) is provided with a plurality of heat dissipation openings (19), each heat dissipation opening (19) being in communication with the first limit groove (2).

Description

Pressure sensor test fixture Technical Field The utility model relates to the technical field of sensor testing, in particular to a pressure sensor testing clamp. Background A pressure sensor is a device for measuring, monitoring and detecting pressure. It converts pressure changes into electrical signals for monitoring and control in industrial, automotive, medical and other applications, and many devices and systems need to withstand certain pressures within their normal operating ranges, and by testing using a pressure tester, it can be verified whether the device can safely withstand the expected pressures to ensure no safety hazards during use, which is particularly important in fields involving high pressure liquid or gas systems, pressure vessels, pipes, valves, etc. The pressure sensor is usually realized transmitting the pressure born to the client side in an electric signal mode through a pressure-sensitive electronic element, and the pressure sensor needs to be subjected to pressure test when leaving the factory, so that a test fixture is needed, and the position of the pressure sensor can be limited. When the existing test clamp is used, the pressure sensor is usually placed on the clamp frame to carry out clamping operation, so that the position of the pressure sensor cannot be changed, the types of the pressure sensor are more, the shapes of the pressure sensors of different types are not too same, the pressure sensors of different shapes are difficult to adapt to under the action of the same clamp, in the prior art, the pressure sensor is clamped by a mechanical mechanism, the pressure sensor can bear the pressure except a test instrument, namely, the pressure from the clamp, and the test structural error is larger, and meanwhile, the space of the test instrument occupied by the mechanical mechanism is far larger than the space of the test instrument occupied by the clamp structure. Disclosure of utility model The utility model provides a pressure sensor testing clamp, which aims to solve the technical problem that a mechanical clamp in the prior art enables a pressure sensor to bear extra pressure. The utility model provides a pressure sensor testing fixture which comprises a base arranged on a pressure sensor detecting instrument, wherein a first limit groove is formed in the center of the base, an annular limit structure is arranged in the first limit groove, the annular limit structure comprises a mounting annular table arranged in the base, a supporting table for supporting the pressure sensor is arranged in the mounting annular table, a plurality of clamping jaws are fixedly connected onto the mounting annular table, limiting blocks are slidably arranged on the inner sides of the clamping jaws, the clamping jaws and the limiting blocks are of arc structures, the limiting blocks are slidably connected with the clamping jaws, and the limiting blocks are used for limiting horizontal displacement of the pressure sensor. Furthermore, a sliding groove is formed in the inner side of each clamping jaw, the limiting block is arranged in the sliding groove in a sliding mode, and the limiting block is matched with the sliding groove. Further, a first magnetic patch is arranged in the sliding groove, a second magnetic patch is arranged at a position, corresponding to the first magnetic patch, of the limiting block, and the magnetism of the first magnetic patch is opposite to that of the second magnetic patch. Further, the chute comprises a horizontal chute and a vertical chute, the horizontal chute is arranged on the inner side surface of the clamping jaw, and the vertical chute is arranged at the bottom of the tail end of the horizontal chute. Further, a second limiting groove for the cable of the pressure sensor to pass through is formed in the mounting ring table. Furthermore, a plurality of third limit grooves are uniformly formed in the mounting ring table, a plurality of limit pins are arranged at the bottom of each clamping jaw, each limit pin penetrates through the corresponding third limit groove, a third magnetic patch is arranged at the bottom of each limit pin, a fourth magnetic patch is arranged at the bottom of each third limit groove, and the magnetic properties of the third magnetic patch and the fourth magnetic patch are opposite. Further, a plurality of semiconductor chips are arranged on the supporting table, and the semiconductor chips are connected with a direct current power supply. Further, the base side surface is provided with a plurality of heat dissipation ports, and each heat dissipation port is communicated with the first limiting groove. The utility model has at least the following beneficial effects: Through quick detach stopper and brace table with pressure sensor restriction in anchor clamps, the clamping jaw is installed in annular limit structure with the mode of quick detach, stopper and clamping jaw quick detach set up, ensure that the stopper can be installed f