Test tool for pressure sensor

Abstract

The utility model discloses a testing tool for a pressure sensor, which relates to the technical field of testing tools for pressure sensors and comprises a workbench, a testing machine body is arranged at the top of the workbench, and a clamping mechanism is arranged at the top of the workbench and used for clamping and fixing pressure sensors of different shapes and sizes. The clamping mechanism comprises a kinetic energy unit arranged at the top of the workbench and used for providing clamping kinetic energy; the adaptation unit is arranged at the top of the kinetic energy unit and comprises a cross-shaped sliding block, a mounting seat is fixedly mounted at the top of the cross-shaped sliding block, a screw rod is rotationally mounted in the mounting seat in a threaded and penetrating manner, a hand wheel is fixedly mounted at one end of the screw rod, and a V-shaped groove is formed in one side of a clamping block, so that the pressure sensors in different shapes can be adapted; due to the wide adaptability, the device can be used for testing more types of sensors, and the universality and the flexibility of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of test fixtures for pressure sensors, in particular to a test fixture for pressure sensors. 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. It is widely used in various industrial automatic control environments. It must undergo rigorous testing before leaving the factory, and test fixtures are commonly used devices in the testing process.

[0003] After checking the public (announcement) number: CN213068056U, a test fixture for a pressure sensor is disclosed, including a body, a stabilizing device is provided at the bottom of the outer surface of the body, an operating table is provided on one side of the outer surface of the body, and a dustproof device is provided on the side of the outer surface of the body adjacent to the operating table, and the stabilizing device includes a mounting block and a slide groove, a threaded rod is provided through the outer surface of the mounting block, one end of the outer surface of the threaded rod is rotatably connected to a clamping plate, one side of the inner wall of the clamping plate is fixedly connected to a sliding rod, and the outer surface of the sliding rod is slidably connected to a clamping block at one end away from the clamping plate. In this utility model, the entire device can be fixed more firmly during testing through the interaction of the threaded rod, the clamping plate, the slider, the slide groove, the clamping block, the sliding rod and the buffer spring, so that the workpiece can be fixed more firmly during testing, and the detection result will not be erroneous due to position offset, thereby improving the practicality of the device.

[0004] Based on the above-mentioned prior art, the existing test fixtures for pressure sensors still have the following problems: the clamping device equipped with the current pressure sensor test fixture is usually limited in design to a single clamping method for circular or rectangular sensors. This limitation is particularly prominent when dealing with pressure sensors of various shapes, and it is difficult to meet diverse testing needs. In addition, the clamping space size of the existing clamping device is limited. Once the size of the pressure sensor exceeds this range, it will face the dilemma of being unable to clamp. For this reason, the utility model provides a test fixture for a pressure sensor. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a test fixture for a pressure sensor, which solves the following problems existing in the existing test fixture for pressure sensors: the clamping device equipped with the current pressure sensor test fixture is usually limited in design to a single clamping method for circular or rectangular sensors. This limitation is particularly prominent when dealing with pressure sensors of various shapes, and it is difficult to meet diverse testing needs. In addition, the clamping space size of the existing clamping device is limited. Once the size of the pressure sensor exceeds this range, it will face the dilemma of being unable to clamp.

[0006] To achieve the above purpose, the utility model is implemented by the following technical solutions: a test fixture for a pressure sensor, comprising a workbench, a test body is arranged on the top of the workbench, a clamping mechanism is arranged on the top of the workbench for clamping and fixing pressure sensors of different shapes and sizes, and the clamping mechanism includes:

[0007] A kinetic energy unit is disposed on the top of the workbench and is used to provide clamping kinetic energy;

[0008] The adapter unit is arranged on the top of the kinetic energy unit, and includes a cross slider. A mounting seat is fixedly installed on the top of the cross slider. A screw rod is installed through the internal thread of the mounting seat, and a hand wheel is fixedly installed on one end of the screw rod. A clamping block is fixedly installed on the end of the screw rod away from the hand wheel. Two limit slide rods are installed through the internal sliding of the mounting seat.

[0009] Preferably, the kinetic energy unit includes a box body fixedly mounted on the top of the workbench, two cross slide grooves are provided inside the box body, a fixed plate is fixedly mounted inside the box body, a rotating column is rotatably mounted inside the fixed plate, and the bottom end of the rotating column is rotatably connected to the bottom of the inner cavity of the box body, a gear is fixedly mounted on the outer ring of the rotating column, a rotating rod is fixedly mounted on the top of the rotating column, a first connecting rod is hingedly mounted on the left end of the rotating rod, and a second connecting rod is hingedly mounted on the right end of the rotating rod.

[0010] Preferably, a cylinder is fixedly mounted on the bottom of the inner cavity of the box body, a rack is fixedly mounted on the output end of the cylinder, a limit track block is fixedly mounted on the bottom of the inner cavity of the box body, and the rack is adapted to slide inside the limit track block.

[0011] Preferably, a rubber pad is fixedly mounted on the surface of the clamping block.

[0012] Preferably, the rack is mounted in meshing engagement with the gear.

[0013] Preferably, the cross slide block is adapted to slide inside the cross slide groove.

[0014] The utility model provides a test fixture for a pressure sensor. Compared with the prior art, it has the following beneficial effects:

[0015] (1) The test fixture for the pressure sensor has a V-shaped groove on one side of the clamping block, so as to adapt to pressure sensors of different shapes. This wide adaptability enables the device to be used for testing more types of sensors, thereby improving the versatility and flexibility of the equipment.

[0016] (2) The test fixture for the pressure sensor drives the screw to rotate by turning the hand wheel, and the rotation of the screw can drive the clamping block to move, so that the distance between the two clamping blocks can be adjusted, thereby shrinking and enlarging the clamping space, thereby ensuring that the device can adapt to sensors of different sizes, so that it can adapt to more sensor tests of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a left-side stereoscopic structural diagram of the utility model;

[0018] Figure 2 This is a cross-sectional three-dimensional structural diagram of the clamping mechanism of the utility model;

[0019] Figure 3 It is a three-dimensional structural diagram of the kinetic energy unit of the utility model;

[0020] Figure 4 It is a three-dimensional structural diagram of the adapter unit of the utility model.

[0021] In the figure: 1-workbench, 2-clamping mechanism, 21-kinetic energy unit, 211-box, 212-cross slide, 213-fixed plate, 214-rotating column, 215-gear, 216-rotating rod, 217-first connecting rod, 218-second connecting rod, 219-cylinder, 2110-rack, 2111-limiting track block, 22-adapter unit, 221-cross slide, 222-mounting seat, 223-screw rod, 224-handwheel, 225-limiting slide, 226-clamping block, 227-rubber pad, 3-test body. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] A test fixture for a pressure sensor includes a workbench 1, a test body 3 is arranged on the top of the workbench 1, and a clamping mechanism 2 is arranged on the top of the workbench 1 for clamping and fixing pressure sensors of different shapes and sizes. The clamping mechanism 2 includes:

[0025] The kinetic energy unit 21 is disposed on the top of the workbench 1 and is used to provide clamping kinetic energy;

[0026] The adapter unit 22 is arranged on the top of the kinetic energy unit 21, and includes a cross slider 221. A mounting seat 222 is fixedly installed on the top of the cross slider 221. A screw rod 223 is installed through the internal thread of the mounting seat 222. A hand wheel 224 is fixedly installed on one end of the screw rod 223. A clamping block 226 is fixedly installed on the end of the screw rod 223 away from the hand wheel 224. Two limit slide rods 225 are installed through the internal sliding of the mounting seat 222.

[0027] A V-shaped groove is provided on one side of the clamping block 226, so that the clamping block 226 can adapt to pressure sensors of different shapes. This wide adaptability enables the device to be used for testing more types of sensors, thereby improving the versatility and flexibility of the equipment.

[0028] By rotating the hand wheel 224 to drive the screw rod 223 to rotate, the rotation of the screw rod 223 can drive the clamping block 226 to move, so that the distance between the two clamping blocks 226 can be adjusted, thereby shrinking and expanding the clamping space, thereby ensuring that the device can adapt to sensors of different sizes, so that it can adapt to more sensor tests of different sizes.

[0029] In this embodiment, the kinetic energy unit 21 includes a box body 211 fixedly installed on the top of the workbench 1, and two cross slide grooves 212 are opened inside the box body 211. A fixed plate 213 is fixedly installed inside the box body 211, and a rotating column 214 is rotatably installed inside the fixed plate 213, and the bottom end of the rotating column 214 is rotatably connected to the bottom of the inner cavity of the box body 211, and a gear 215 is fixedly installed on the outer ring of the rotating column 214. A rotating rod 216 is fixedly installed on the top of the rotating column 214, and a first connecting rod 217 is hingedly installed on the left end of the rotating rod 216, and a second connecting rod 218 is hingedly installed on the right end of the rotating rod 216.

[0030] The ends of the first connecting rod 217 and the second connecting rod 218 away from the rotating rod 216 are both connected to a cross slider 221 via a connecting shaft.

[0031] In this embodiment, a cylinder 219 is fixedly installed at the bottom of the inner cavity of the box body 211, a rack 2110 is fixedly installed at the output end of the cylinder 219, a limit track block 2111 is fixedly installed at the bottom of the inner cavity of the box body 211, and the rack 2110 is adapted to slide inside the limit track block 2111.

[0032] The model of the cylinder 219 is DSNU-20-50-PPV-A, which is electrically connected to an external power source and is opened and closed by a person operating a control panel.

[0033] The cylinder 219 runs, pulling the rack 2110 to slide inside the limit track block 2111, and the rack 2110 drives the gear 215 to rotate counterclockwise. The gear 215 drives the rotating column 214 and the rotating rod 216 to rotate synchronously. The rotating rod 216 pulls the two cross slides 221 to slide toward each other inside the cross slide groove 212 through the first connecting rod 217 and the second connecting rod 218. At the same time, the cross slide 221 drives the clamping block 226 to move synchronously through the mounting seat 222 to clamp the pressure sensor.

[0034] In this embodiment, a rubber pad 227 is fixedly mounted on the surface of the clamping block 226 .

[0035] A rubber pad 227 is fixedly installed on the surface of the clamping block 226 to ensure that the pressure sensor being tested remains stable during the clamping process, reducing movement or slippage caused by vibration or external force, and at the same time reducing direct contact and friction between the clamping block 226 and the sensor, avoiding scratches or damage to the sensor surface during the clamping process.

[0036] In this embodiment, the rack 2110 is meshed with the gear 215 .

[0037] In this embodiment, the cross slide block 221 is adapted to slide inside the cross slide groove 212 .

[0038] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0039] During operation, the user first connects the device to an external power source, and then rotates 224 to drive 223 to rotate, and the rotation of 223 can drive 226 to move. When 226 moves, 225 slides synchronously inside 222, so that the distance between the two 226 can be adjusted, and the two 226 are adjusted to be suitable for the space for clamping the sensor. Then 219 runs, pulling 2110 to slide inside 2111, 2110 drives 215 to rotate counterclockwise, 215 drives 214 and 216 to rotate synchronously, 216 pulls the two 221 to slide toward each other inside 212 through 217 and 218, and at the same time, 221 drives 226 to move synchronously through 222, thereby clamping the pressure sensor, and then 3 runs to test the pressure sensor. When the pressure sensor is released, 219 runs to push 2110 to release the pressure sensor.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test fixture for a pressure sensor, comprising a workbench (1), a test body (3) being arranged on the top of the workbench (1), characterized in that: The top of the workbench (1) is provided with a clamping mechanism (2) for clamping and fixing pressure sensors of different shapes and sizes, and the clamping mechanism (2) comprises: A kinetic energy unit (21) is arranged on the top of the workbench (1) and is used to provide clamping kinetic energy; The adapter unit (22) is arranged on the top of the kinetic energy unit (21), and comprises a cross slider (221). A mounting seat (222) is fixedly installed on the top of the cross slider (221). A screw rod (223) is rotatably installed through the internal thread of the mounting seat (222). A hand wheel (224) is fixedly installed on one end of the screw rod (223). A clamping block (226) is fixedly installed on the end of the screw rod (223) away from the hand wheel (224). Two limit slide rods (225) are slidably installed through the interior of the mounting seat (222).

2. A test fixture for a pressure sensor according to claim 1, characterized in that: The kinetic energy unit (21) comprises a box body (211) fixedly mounted on the top of the workbench (1), the box body (211) having two cross slide grooves (212) arranged inside, a fixed plate (213) fixedly mounted inside the box body (211), a rotating column (214) rotatably mounted inside the fixed plate (213), and the bottom end of the rotating column (214) is rotatably connected to the bottom of the inner cavity of the box body (211), a gear (215) fixedly mounted on the outer ring of the rotating column (214), a rotating rod (216) fixedly mounted on the top of the rotating column (214), a first connecting rod (217) hingedly mounted on the left end of the rotating rod (216), and a second connecting rod (218) hingedly mounted on the right end of the rotating rod (216).

3. A test fixture for a pressure sensor according to claim 2, characterized in that: A cylinder (219) is fixedly mounted on the bottom of the inner cavity of the box body (211), a rack (2110) is fixedly mounted on the output end of the cylinder (219), a limit track block (2111) is fixedly mounted on the bottom of the inner cavity of the box body (211), and the rack (2110) is adapted to slide inside the limit track block (2111).

4. A test fixture for a pressure sensor according to claim 1, characterized in that: A rubber pad (227) is fixedly mounted on the surface of the clamping block (226).

5. A test fixture for a pressure sensor according to claim 3, characterized in that: The rack (2110) is meshedly mounted with the gear (215).

6. A test fixture for a pressure sensor according to claim 2, characterized in that: The cross slide block (221) is adapted to slide inside the cross slide groove (212).

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