Pressure sensor test fixture
By designing adjustable side clamps and guide limiting structures, the problem of poor adaptability of traditional clamps is solved, achieving stable clamping of pressure sensors of different specifications and accurate test results.
Patent Information
- Application Number
- CN202520382817.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Traditional pressure sensor test fixtures cannot be adapted to clamp and fix pressure sensors of different specifications, resulting in poor clamping effect and affecting the accuracy of test results.
A pressure sensor test fixture was designed, including a first side clamp and a second side clamp. The side adjustment mechanism enables synchronous sliding adjustment. Combined with guide limiters and end fixing components, it can adapt to pressure sensors of different specifications and ensure clamping effect and structural stability.
Stable clamping of pressure sensors of different specifications has been achieved, improving the accuracy and adaptability of test results and ensuring the structural stability of pressure sensors during the testing process.
Smart Images
Figure CN223802437U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of sensors, and discloses a pressure sensor test fixture. BACKGROUND
[0002] A pressure-sensitive electronic element is arranged in a pressure sensor, which transmits the pressure borne by the pressure sensor to a client in the form of an electric signal, and the pressure sensor needs to be tested for pressure when leaving the factory, so a test fixture needs to be used to limit the position of the pressure sensor.
[0003] In use, the existing test fixture usually clamps the pressure sensor on the fixture frame, so that the position of the pressure sensor does not change. However, there are many types of pressure sensors, and the specifications and shapes of different types of pressure sensors are also different. It is difficult for the same fixture to adapt to pressure sensors of different specifications and shapes. If the fixture and the pressure sensor are not tightly clamped and fixed, the stability of the pressure sensor will be affected, the clamping effect will be poor, and the accuracy of the test result will be affected. Therefore, the inventor provides a pressure sensor test fixture to solve the above problems. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at solving the problem that the test fixture of the traditional pressure sensor cannot be adaptively clamped and fixed according to pressure sensors of different specifications, so that the clamping effect is poor and the accuracy of the test result of the pressure sensor is affected.
[0005] In order to achieve the above purpose, the basic scheme of the utility model provides a pressure sensor test fixture, which comprises a test table and a mounting back plate vertically arranged at one end of the test table. The inner side of the mounting back plate is symmetrically connected with a first side clamping plate and a second side clamping plate for clamping the two sides of the pressure sensor through sliding connection. The two ends of the mounting back plate are symmetrically provided with side adjusting mechanisms for driving the first side clamping plate and the second side clamping plate to move synchronously on the test table, and the end away from the mounting back plate of the test table is provided with an end fixing assembly for clamping and fixing the end of the pressure sensor. The mounting back plate is further provided with a guide limiting piece for guiding and limiting the first side clamping plate and the second side clamping plate.
[0006] The principle and effect of the basic scheme are as follows:
[0007] 1. Compared with the prior art, the utility model discloses a first side clamping plate and a second side clamping plate are arranged, a side adjusting mechanism is utilized to drive the first side clamping plate and the second side clamping plate to slide on the test table simultaneously, thereby realizing the clamping or loosening of the side of the pressure sensor, and the distance between the first side clamping plate and the second side clamping plate can be adjusted through the side adjusting mechanism, thereby facilitating the clamping of pressure sensors of different specifications, the clamping effect is better, and the operation of the performance test of pressure sensors of different specifications can be fixed, the adaptability of the overall structure is higher, and the utility model is more practical.
[0008] Further, the side adjusting mechanism comprises a mounting seat symmetrically arranged at both sides of one end of the test table, a bidirectional screw rod rotationally connected between the two symmetric mounting seats, a first ball slide block cooperatively connected and mounted at one end of the bidirectional screw rod close to the first side clamping plate, a second ball slide block cooperatively connected and mounted at one end of the bidirectional screw rod close to the second side clamping plate, and an adjusting handle rotationally connected at the outer end of any mounting seat and coaxially connected with the end of the bidirectional screw rod, the first side clamping plate is fixedly connected with the side end of the first ball slide block, and the second side clamping plate is fixedly connected with the end of the second ball slide block. By manually rotating the adjusting handle, the bidirectional screw rod is driven to rotate, and the first ball slide block and the first side clamping plate and the second ball slide block and the second side clamping plate are simultaneously and reversely slid along the test table, and the distance between the first side clamping plate and the second side clamping plate is increased or decreased to adjust the clamping degree of the pressure sensor.
[0009] Further, the side of the adjusting handle is provided with anti-skid lines. By arranging the anti-skid lines, the adjusting handle can be easily gripped, and the hand slipping phenomenon during the use of the adjusting handle is avoided to affect the clamping adjustment efficiency of the pressure sensor.
[0010] Further, the guide limiting piece comprises a top limiting plate arranged between the top portions of the two symmetrical mounting seats on the test table, a bottom limiting plate arranged between the bottom portions of the two symmetrical mounting seats on the test table, and a transverse limiting plate arranged between the top limiting plate and the bottom limiting plate. One side of the top limiting plate and the bottom limiting plate is fixedly connected with the mounting back plate. The transverse limiting plate is located at the middle of the other side of the top limiting plate and the bottom limiting plate. The first side clamping plate and the second side clamping plate are symmetrically arranged on the two sides of the transverse limiting plate. The first side clamping plate and the first ball sliding block are in sliding connection with the top limiting plate and the bottom limiting plate. The second side clamping plate and the second ball sliding block are in sliding connection with the top limiting plate and the bottom limiting plate. By arranging the top limiting plate and the top limiting plate, the first side clamping plate, the first ball sliding block, the second side clamping plate and the second ball sliding block are limited and guided, so that the structure of the first side clamping plate and the second side clamping plate is more stable during the adjustment of the interval. By arranging the transverse limiting plate, the transverse sliding limit of the first side clamping plate and the second side clamping plate can be limited, and at the same time, the back mounting limiting and structural support for the pressure sensor placed on the test table are provided, so that the pressure sensor is prevented from moving during the test.
[0011] Further, the end fixing assembly comprises an end fixing seat arranged on the test table and located at the middle of the end of the test table away from the mounting back plate, an end electric telescopic rod arranged on the inner side of the end fixing seat, a clamping block arranged at the end of the end electric telescopic rod and used for clamping and fixing the end of the pressure sensor, and a controller. The end electric telescopic rod is electrically connected with the controller. By arranging the end electric telescopic rod and the clamping block, the end of the pressure sensor is clamped and fixed, so that the structure of the pressure sensor is more firm during the performance test.
[0012] Further, one side of the first side clamping plate and the second side clamping plate close to each other is provided with a protective cotton layer which can be in contact with the pressure sensor. By arranging the protective cotton layer, the first side clamping plate and the second side clamping plate are prevented from clamping and pressing the side of the pressure sensor to damage, and the structure of the pressure sensor is protected. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.
[0014] Figure 1 A structure perspective view of a pressure sensor test fixture is shown.
[0015] Figure 2A top view of the structure of a pressure sensor test fixture according to an embodiment of this application is shown. Detailed Implementation
[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0017] The reference numerals in the accompanying drawings include: test platform 1, mounting back plate 2, first side clamp 3, second side clamp 4, mounting base 5, bidirectional lead screw 6, first ball bearing slider 7, second ball bearing slider 8, adjusting handle 9, top limiting plate 10, bottom limiting plate 11, lateral limiting plate 12, end fixing seat 13, end electric telescopic rod 14, clamping block 15, protective cotton layer 16.
[0018] A pressure sensor test fixture, implementing, for example Figure 1 As shown: It includes a test platform 1 and a mounting back plate 2 vertically disposed at the rear end of the test platform 1. The inner side of the mounting back plate 2 is symmetrically slidably connected with a first side clamping plate 3 and a second side clamping plate 4 for clamping the left and right sides of the pressure sensor. The two ends of the mounting back plate 2 are symmetrically provided with side adjustment mechanisms for driving the first side clamping plate 3 and the second side clamping plate 4 to slide synchronously towards or away from each other on the test platform 1. The end of the test platform 1 away from the mounting back plate 2 is provided with an end fixing assembly for clamping and fixing the end of the pressure sensor. The mounting back plate 2 is also provided with guide limiting members for guiding and limiting the first side clamping plate 3 and the second side clamping plate 4.
[0019] Among them, such as Figure 1 and Figure 2 As shown, the side adjustment mechanism includes mounting seats 5 symmetrically arranged on both sides of the rear end of the test bench 1, a bidirectional lead screw 6 rotatably connected between the two symmetrical mounting seats 5, a first ball slider 7 that is fitted and installed with the end of the bidirectional lead screw 6 near the first side clamping plate 3, a second ball slider 8 that is fitted and installed with the end of the bidirectional lead screw 6 near the second side clamping plate 4, and an adjustment handle 9 rotatably connected to the outer end of any mounting seat 5 and coaxially connected to the end of the bidirectional lead screw 6. The first side clamping plate 3 is fixedly connected to the side end of the first ball slider 7, and the second side clamping plate 4 is fixedly connected to the end of the second ball slider 8.
[0020] Among them, such as Figure 1 and Figure 2 As shown, the adjustment handle 9 has anti-slip textured edges.
[0021] Among them, such as Figure 1 and Figure 2As shown, the guide limiting piece includes a top limiting plate 10 arranged between the top portions of the two symmetrical mounting seats 5 on the test table 1, a bottom limiting plate 11 arranged between the bottom portions of the two symmetrical mounting seats 5 on the test table 1, and a transverse limiting plate 12 arranged between the top limiting plate 10 and the bottom limiting plate 11. One side of the top limiting plate 10 and the bottom limiting plate 11 is fixedly connected with the mounting back plate 2. The transverse limiting plate 12 is located at the middle of the other side of the top limiting plate 10 and the bottom limiting plate 11. The first side clamping plate 3 and the second side clamping plate 4 are symmetrically arranged on the two sides of the transverse limiting plate 12, respectively. The first side clamping plate 3 and the first ball sliding block 7 are in sliding connection with the top limiting plate 10 and the bottom limiting plate 11. The second side clamping plate 4 and the second ball sliding block 8 are in sliding connection with the top limiting plate 10 and the bottom limiting plate 11.
[0022] As shown in Figure 1 and Figure 2 As shown, the end fixing assembly includes an end fixing seat 13 arranged on the test table 1 and located at the middle of the end of the test table 1 away from the mounting back plate 2, an end electric telescopic rod 14 arranged on the inner side of the end fixing seat 13, a clamping block 15 arranged at the end of the end electric telescopic rod 14 and used for clamping and fixing the end of the pressure sensor, and a controller. The end electric telescopic rod 14 is electrically connected with the controller.
[0023] As shown in Figure 1 and Figure 2 As shown, the side close to the first side clamping plate 3 and the second side clamping plate 4 is provided with a protective cotton layer 16 which can be in close contact with the pressure sensor.
[0024] In the specific implementation process of the utility model, first, the interval between the first side clamping plate 3 and the second side clamping plate 4 is adjusted to the maximum position, when adjusting, the adjusting handle 9 needs to be rotated counterclockwise, driving the bidirectional screw 6 to rotate counterclockwise, at the same time, the first ball sliding block 7 and the second ball sliding block 8 are matched with the bidirectional screw 6 and move outward reversely along the top limiting plate 10 and the bottom limiting plate 11, then the pressure sensor is placed on the test table 1 and located between the first side clamping plate 3 and the second side clamping plate 4, then the interval between the first side clamping plate 3 and the second side clamping plate 4 is gradually reduced, when adjusting, the adjusting handle 9 needs to be rotated clockwise, driving the bidirectional screw 6 to rotate clockwise, at the same time, the first ball sliding block 7 and the second ball sliding block 8 are matched with the bidirectional screw 6 and move inward along the top limiting plate 10 and the bottom limiting plate 11, until the first side clamping plate 3 and the second side clamping plate 4 clamp the pressure sensor between them, that is, the clamping and fixing of the side of the pressure sensor is completed, then the end electric telescopic rod 14 is controlled to extend by the controller, driving the clamping plate to approach the end of the pressure sensor and clamp and fix the pressure sensor between the transverse limiting plate 12 and the clamping plate, then the pressure performance test operation of the pressure sensitive resistor assembly of the pressure sensor on the test table 1 can be implemented.
[0025] Compared with the prior art, the utility model discloses a first side clamping plate 3 and second side clamping plate 4 are set up, using the side adjusting mechanism, driving the first side clamping plate 3 and the second side clamping plate 4 to move synchronously on the test table 1, so that the clamping or loosening of the side of the pressure sensor is realized, at the same time, the interval between the first side clamping plate 3 and the second side clamping plate 4 can be adjusted through the side adjusting mechanism, so that different specifications of pressure sensor can be clamped, the clamping effect is better, the operation of the performance test of different specifications of pressure sensor is fixed, the adaptability of the overall structure is higher, it is more practical, through the guide limiting piece, the structure of the first side clamping plate 3 and the second side clamping plate 4 is limited and guided during the sliding process, so that the overall structure is more stable, the clamping effect is better, the structure of the pressure sensor is more stable during the test process, and the accuracy of the test result is avoided, the traditional pressure sensor test fixture cannot be adapted and clamped and fixed according to different specifications of pressure sensor, the clamping effect is poor, and the accuracy of the test result of the pressure sensor is affected.
[0026] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make minor changes or modifications to the disclosed technical content, or make equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change or modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the technical solution of the present application.
Claims
1. A pressure sensor test fixture, characterized by: The utility model relates to a pressure sensor test platform, which comprises a test table and a mounting backboard vertically arranged at one end of the test table, the inner side of the mounting backboard is symmetrically connected with a first side clamping plate and a second side clamping plate for clamping both sides of the pressure sensor, the two ends of the mounting backboard are symmetrically provided with side adjusting mechanisms for driving the first side clamping plate and the second side clamping plate to move synchronously on the test table, the end of the test table away from the mounting backboard is provided with an end fixing assembly for clamping and fixing the end of the pressure sensor, and the mounting backboard is further provided with a guide limiting piece for guiding and limiting the first side clamping plate and the second side clamping plate.
2. A pressure sensor test fixture according to claim 1, wherein, The side adjusting mechanism comprises mounting seats symmetrically arranged at both sides of one end of the test table, a bidirectional screw rod rotatably connected between the two mounting seats, a first ball sliding block cooperatively connected and mounted at one end of the bidirectional screw rod close to the first side clamping plate, a second ball sliding block cooperatively connected and mounted at one end of the bidirectional screw rod close to the second side clamping plate, and an adjusting handle rotatably connected at the outer end of any mounting seat and coaxially connected with the end of the bidirectional screw rod, the first side clamping plate is fixedly connected with the side end of the first ball sliding block, and the second side clamping plate is fixedly connected with the end of the second ball sliding block.
3. A pressure sensor test fixture according to claim 2, wherein, The circumferential side of the adjusting handle is provided with anti-skid side lines.
4. A pressure sensor test fixture according to claim 3, wherein, The guide limiting piece comprises a top limiting plate arranged between the top portions of the two symmetric mounting seats on the test table, a bottom limiting plate arranged between the bottom portions of the two symmetric mounting seats on the test table, and a transverse limiting plate arranged between the top limiting plate and the bottom limiting plate, one side of the top limiting plate and the bottom limiting plate is fixedly connected with the mounting backboard, the transverse limiting plate is located at the middle portion of the other side of the top limiting plate and the bottom limiting plate, the first side clamping plate and the second side clamping plate are symmetrically arranged at both sides of the transverse limiting plate, the first side clamping plate and the first ball sliding block are slidably connected with the top limiting plate and the bottom limiting plate, and the second side clamping plate and the second ball sliding block are slidably connected with the top limiting plate and the bottom limiting plate.
5. The pressure sensor test fixture of claim 1, wherein, The end fixing assembly comprises an end fixing seat arranged on the test table and located at the middle portion of the end of the test table away from the mounting backboard, an end electric telescopic rod arranged on the inner side of the end fixing seat, a clamping block arranged at the end of the end electric telescopic rod and used for clamping and fixing the end of the pressure sensor, and a controller, the end electric telescopic rod is electrically connected with the controller.
6. The pressure sensor test fixture of claim 1, wherein, The side close to the first side clamping plate and the second side clamping plate is provided with a protective cotton layer capable of being in contact with the pressure sensor.