An inertial test fixture

Abstract

The application discloses an inertial test clamp, which comprises a fourth rack, a placing part arranged on the fourth rack and used for placing a product to be tested, a fixing device movably arranged on the fourth rack and used for fixing the product to be tested on the placing part, a locking device movably arranged on the fourth rack and capable of moving to lock the fixing device when the fixing device fixes the product to be tested on the placing part, and a terminal assembly arranged on the locking device and electrically connected with the product to be tested when the locking device moves to lock the fixing device. The clamp can effectively reduce the cable breakage and equipment damage caused by starting the test before the product to be tested is fixed.

Description

Technical Field

[0001] This invention relates to the field of testing technology, and in particular to an inertial testing fixture. Background Technology

[0002] An inertial measurement unit (IMU) is a core component in a control system used to sense flight attitude. It measures an object's three-axis attitude and acceleration, and uses this information to calculate the object's attitude. Due to differences in price and calculation algorithms, the quality of IMUs varies greatly. Therefore, they often need to undergo comprehensive testing with an inertial testing device before use. Based on this testing, the IMU is calibrated, and the calculation algorithm is optimized, among other operations, to improve accuracy.

[0003] In existing inertial testing devices, the product under test (DUT) is typically mounted on a fixture and then the plug is manually connected to the DUT. If the DUT is not properly secured to the fixture, it is easy for the DUT to detach from the fixture during the testing process, resulting in damage to the testing device, including the plug. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes an inertial testing fixture that can effectively reduce cable breakage and equipment damage caused by starting testing before the product under test is properly secured.

[0005] The inertial testing fixture of the present invention includes: a fourth frame; a placement part disposed on the fourth frame for placing a product under test; a fixing device movably disposed on the fourth frame for fixing the product under test to the placement part; a locking device movably disposed on the fourth frame, wherein when the fixing device fixes the product under test to the placement part, the locking device can move to lock the fixing device; and a terminal assembly disposed on the locking device, wherein when the locking device moves to lock the fixing device, the terminal assembly is electrically connected to the product under test.

[0006] Using the aforementioned inertial testing fixture, during the actual testing process, the product under test (DUT) can be placed in the placement section. Then, the movable fixing device secures the DUT within the placement section, and the movable locking device locks the fixing device, ensuring the DUT is stably positioned on the placement section. Simultaneously, the terminal assembly connects to the DUT while the movable locking device locks the fixing device, and testing can begin. Throughout the process, the terminal assembly is mounted on the locking device. Only after the locking device locks the fixing device can the terminal assembly be electrically connected to the DUT. This ensures that the DUT is correctly placed, and the locking device locks the fixing device before the terminal assembly connects to the DUT. Testing can only begin after the DUT is properly secured, effectively reducing cable breakage and equipment damage caused by starting testing before the DUT is properly secured.

[0007] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0008] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0009] Figure 1 This is an isometric view of the first inertial testing fixture in an embodiment of the present invention;

[0010] Figure 2 This is an isometric view of the first inertial testing fixture in this embodiment of the invention after removing the product under test;

[0011] Figure 3 This is an isometric view of the first inertial testing fixture in an embodiment of the present invention from another perspective;

[0012] Figure 4 This is a front view of the inertial testing device in an embodiment of the present invention;

[0013] Figure 5 This is an isometric view of a portion of the structure of the inertial testing device in an embodiment of the present invention;

[0014] Figure 6 for Figure 5 A cross-sectional view of the middle section of the structure after the inertial testing fixture has been removed;

[0015] Figure 7 This is an isometric view of the second type of inertial testing fixture in this embodiment of the invention;

[0016] Figure 8 for Figure 7 Top view of the inertial testing fixture;

[0017] Figure 9 for Figure 8 Sectional view along the middle AA direction;

[0018] Figure 10 for Figure 8 Sectional view along the BB direction;

[0019] Figure 11 for Figure 8 A cross-sectional view along the CC direction;

[0020] The above figures include the following reference numerals.

[0021] Detailed Implementation

[0022] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0024] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0026] Reference Figures 4 to 6 The inertial testing device of this embodiment is characterized by comprising: a base 300; a first drive assembly 410 disposed on the base 300; a second frame 411 disposed on the first drive assembly 410, the spindle of the first drive assembly 410 being drivenly connected to the second frame 411; a first cable threading portion passing through the spindle of the first drive assembly 410 and the second frame 411, the first cable threading portion being adapted to accommodate a cable; a second drive assembly 420 disposed on the second frame 411; a third frame 421 disposed on the second drive assembly 420, the spindle of the second drive assembly 420 being drivenly connected to the third frame 421; a second cable threading portion passing through the spindle of the second drive assembly 420 and the third frame 421, the second cable threading portion being used to accommodate a cable; and an inertial testing fixture disposed on the third frame 421, the inertial testing fixture being used to hold the product 200 to be tested.

[0027] Using the aforementioned inertial testing device, during the actual testing process, the product under test 200 can be placed on the inertial testing fixture. Then, the first drive assembly 410 and the second drive assembly 420 are controlled to drive the second frame 411 and the third frame 421 to rotate, causing the product under test 200 and the inertial testing fixture to rotate in different directions. During the entire testing process, the cable passes through the two rotation centers of the first and second cable threading parts. Compared with the method of routing the cable from the outside of the rotating state, this can effectively reduce the occurrence of cable entanglement with rotating parts and reduce equipment damage caused by cable breakage.

[0028] Among them, such as Figure 6 As shown, the first threading part actually passes through the first drive assembly 410 and the second frame 411, and its extension axis is exactly collinear with the main shaft of the first drive assembly 410. Similarly, the second threading part also passes through the second drive assembly 420 and the third frame 421, and its extension axis is collinear with the main shaft of the second drive assembly 420. The main shaft referred to here is the drive shaft that drives the corresponding frame to rotate.

[0029] like Figures 4 to 6 As shown, the inertial testing device also includes: a third drive assembly 430, mounted on the third frame 421; and an inertial testing fixture, mounted on the third drive assembly 430. The spindle of the third drive assembly 430 is driven to connect with the inertial testing fixture. The first drive assembly 410 can drive the second frame 411 to rotate around the vertical axis, the second drive assembly 420 can drive the third frame 421 to rotate around the horizontal axis, and the third drive assembly 430 can drive the inertial testing fixture to rotate, thus achieving three-axis rotation of the product under test 200 during the testing process. Since the cable of the inertial testing device needs to be connected to the product under test 200 during the testing process, the cable can pass through the first and second wiring sections to connect with the product under test 200.

[0030] Specifically, such as Figure 7 As shown, the inertial testing fixture includes: a fourth frame 510, mounted on the spindle of the third drive assembly 430; a placement section 531, mounted on the fourth frame 510, for placing the product under test 200; and a third cable threading section, passing through the spindle of the third drive assembly 430 and the fourth frame 510, for accommodating cables; wherein the cable can pass through the third cable threading section and connect to the product under test 200; since cable threading sections are provided at all three rotating axes, the cable can be prevented from tangling with the frames during the testing process to the greatest extent.

[0031] Specifically, in order to reduce cable wear, slip rings are installed in all three cable-threading sections, including the first, second, and third sections, which effectively reduces the twisting of the cable itself during the testing process and further reduces the possibility of cable breakage.

[0032] like Figure 5 , Figure 6 As shown, both the second frame 411 and the third frame 421 are gantry-type frames. The left and right ends of the third frame 421 are rotatably connected to the left and right ends of the second frame 411, respectively. The second drive assembly 420 is located at the left end of the second frame 411. Specifically, the third frame 421 and the second frame 411 have two hinge positions. The second drive assembly 420 is provided at the hinge position at the left end, which effectively improves the stability of the rotation of the third frame 421 relative to the second frame 411.

[0033] like Figure 5 As shown, the first drive assembly 410 includes: a drive motor mounted on the base 300; and a transmission assembly mounted on the base 300, the input end of which is connected to the drive motor, and the output end of which is connected to the main shaft of the first drive assembly 410. The transmission assembly contains a gear and worm gear mechanism, and its output end is connected to the main shaft. During the test, the power output by the drive motor is transmitted to the second frame 411 via the transmission assembly and the main shaft to drive the second frame 411 to rotate. The mechanisms of the second drive assembly 420 and the third drive assembly 430 are similar.

[0034] like Figure 4 As shown, the inertial testing device also includes a button module 320 mounted on the base 300. Specifically, the entire base 300 comprises two parts, an upper part and a lower part. The upper part includes a test chamber, which is mounted on the base 300. The first drive assembly 410, the second frame 411, the second drive assembly 420, the third frame 421, and the inertial testing fixture are all located in the test chamber. The test chamber has an openable and closable door 330. During the test, the door 330 is kept closed to ensure a sealed test environment, improve test accuracy, and prevent the product under test 200 from flying out and injuring on-site operators.

[0035] The lower part of the base 300 includes a cabinet, which houses the electrical control equipment of the entire inertial testing device. The bottom of the base 300 is also equipped with a roller assembly and a locking assembly to facilitate the movement of the device on the ground and to fix the device to the ground after it has been moved.

[0036] The base 300 is equipped with an operation module 310 and a warning light assembly 340. The warning light assembly 340 is located above the base 300 and is used to emit light warning signals. The operation module 310 is equipped with interactive operation devices, including a display, keyboard and mouse, etc., for controlling the entire inertial testing equipment. The base 300 is also equipped with a button module 320, on which start buttons are provided on both the left and right sides. When the operator presses the start buttons with both hands at the same time, the hatch 330 can be closed and the testing device can be started, thus preventing the operator's hands from being pinched.

[0037] like Figures 7 to 11 The inertial testing fixture shown is a portion mounted on the third drive assembly 430 for holding the product under test 200. Specifically, the inertial testing fixture is characterized by comprising: a fourth frame 510; a placement portion 531 mounted on the fourth frame 510 for placing the product under test 200; a fixing device movably mounted on the fourth frame 510 for fixing the product under test 200 to the placement portion 531; a locking device movably mounted on the fourth frame 510, which can move to lock the fixing device when the fixing device fixes the product under test 200 to the placement portion 531; and a terminal assembly 537 mounted on the locking device, which is electrically connected to the product under test 200 when the locking device moves to lock the fixing device.

[0038] Using the aforementioned inertial testing fixture, during the actual testing process, the product under test (DUT) 200 can be placed in the placement section 531. Then, the movable fixing device secures the DUT 200 in the placement section 531, and the movable locking device locks the fixing device, ensuring that the DUT 200 is stably positioned on the placement section 531. Simultaneously with the movable locking device locking the fixing device, the terminal assembly 537 is connected to the DUT 200, and the test can begin. Throughout the process, the terminal assembly 537 is mounted on the locking device. Only after the locking device locks the fixing device can the terminal assembly 537 be electrically connected to the DUT 200. This ensures that the DUT 200 is correctly positioned, and the locking device locks the fixing device before the terminal assembly 537 is electrically connected to the DUT 200. In other words, the test can only begin after the DUT 200 is securely fixed in place, effectively reducing cable breakage and equipment damage caused by starting the test before the DUT 200 is properly secured.

[0039] The first test component, the second test component, and the third test component, together with each rack, form a three-axis moving assembly, with the inertial test fixture placed at the end of the three-axis moving assembly.

[0040] The fixing device can fix the product under test 200 onto the placement part 531 in various ways, such as pressing the product under test 200 onto the placement part 531 with a pressure block, or fixing the product under test 200 onto the placement part 531 with a pin. After the fixing device fixes the product under test 200 onto the placement part 531, the product under test 200 can be fixed in the placement part 531 simply by maintaining the current position of the fixing device. The locking device is used to keep the fixing device in its current locked position. When the locking device moves the terminal assembly 537 to the locking fixing device, the terminal assembly 537 is connected to the product under test. In this state, the stability of the product under test 200 placed on the placement part 531 is ensured, as well as the stability of the electrical connection between the terminal assembly 537 and the product under test 200 is ensured.

[0041] The placement part 531 is provided with a receiving groove for accommodating the product to be tested 200. The inner wall of the receiving groove has a Teflon coating, which can effectively reduce scratches on the product to be tested 200.

[0042] Specifically, such as Figure 7 As shown, the fixing device includes a locking handle 532 rotatably connected to the fourth frame 510. The locking handle 532 can rotate to press the product under test 200 into the placement part 531. The locking handle 532 can rotate above the product under test 200 and press the product under test 200 onto the placement part 531. When the product under test 200 is correctly placed in the test part, the locking handle 532 can rotate to the correct position to press the product under test 200. At this time, the locking device can lock the current position of the locking handle 532, while ensuring that the product under test 200 is accurately fixed in the placement part 531 and that the terminal assembly 537 is connected to the product under test 200.

[0043] Specifically, the fixing device also includes a pressure pad 533 located at the lower end of the locking handle 532. The pressure pad 533 can withstand the test product 200. When the locking handle 532 is rotated above the product, the pressure pad 533 will press against the test product 200 and transmit downward pressure to the test product 200. The pressure pad 533 is made of soft materials such as rubber, which can effectively reduce the possibility of the locking handle 532 crushing the test product 200.

[0044] like Figure 7 , Figure 9 As shown, a handle is fixedly provided at the front end of the locking handle 532, which makes it easy for the operator to rotate the locking handle 532 to lock the product under test 200 in the placement part 531 or unlock it.

[0045] like Figure 10As shown, the fixing device also includes a pre-tightening component 536 disposed on the locking handle 532. When the locking handle 532 presses the product under test 200 into the placement part 531, the pre-tightening component 536 can provide a certain pre-tightening force to the locking handle 532 to maintain the fixed state. When the locking handle 532 is rotated to the fixed position of the product under test 200, the pre-tightening component 536 can provide a pre-tightening force to keep the locking handle 532 in the current manual position, and then the locking device can lock the locking handle 532, avoiding the failure of the locking device to lock the locking handle 532 due to the locking handle 532 becoming loose.

[0046] like Figure 9 As shown, a ball is provided at the front end of the pre-tightening component 536, and a groove that can cooperate with the ball is provided at the corresponding position on the placement part 531. When the locking handle 532 is rotated to the locking position, the ball can cooperate with the groove to provide a certain pre-tightening force for the locking handle 532, so that the locking device can move smoothly to the position of locking the locking handle 532.

[0047] The pre-tightening component 536 is threadedly engaged with the locking handle 532; for example... Figure 9 As shown, the preload assembly 536 can be adjusted in position by rotating in a threaded manner to adjust the preload force provided to the locking handle 532 after the ball and the groove are engaged.

[0048] like Figure 7 , Figure 10 , Figure 11 As shown, the locking device includes: a locking assembly 534, slidably connected to the fourth frame 510, and a terminal assembly 537 disposed on the locking assembly 534; a locking cantilever, fixedly disposed on the locking assembly 534, wherein when the locking handle 532 is rotated to press the product to be tested 200 into the placement part 531, the locking cantilever can move under the drive of the locking assembly 534 to above the locking handle 532 and prevent the locking assembly 534 from rotating; wherein, the locking assembly 534 can drive the locking cantilever to move back and forth, and when the locking cantilever moves to above the locking handle 532, it can prevent the locking handle 532 from rotating, so that the locking handle 537... 32. The product under test 200 is kept pressed firmly in the placement part 531. When the locking assembly 534 moves the locking arm backward, the locking handle 532 can be rotated upward to the unlock position, and the product under test 200 can be taken out. Before the test, if the product under test 200 is not placed in the placement part 531, the locking handle 532 cannot be rotated to the locking position, the locking assembly 534 and the locking arm cannot move forward to the locking position, and the terminal assembly 537 cannot be electrically connected to the product under test, that is, the test cannot start. This ensures that the test can only be carried out after the product under test 200 is installed in place.

[0049] like Figure 10As shown, the fourth frame 510 is provided with a locking slide rail 542 extending in the front-to-back direction, and the locking assembly 534 is provided with a locking slider 541, and the locking assembly 534 and the locking slider 541 are slidably engaged.

[0050] like Figure 7 , Figure 11 As shown, the inertial testing fixture also includes a clamping component 535 rotatably mounted on the fourth frame 510. When the locking arm moves above the locking arm under the drive of the locking component 534, the clamping component 535 can rotate to clamp the locking component 534. The clamping component 535 and the locking component 534 are respectively provided with hooks. The two hooks can cooperate with each other. When the locking component 534 moves forward to the locked position, the clamping component 535 can rotate to the two hooks cooperate with each other, so that the locking component 534 maintains the locked position. During the test, the stability of the product under test 200 in the placement part 531 is effectively guaranteed.

[0051] To prevent the two hooks from coming loose during the test, a second elastic element 540 is connected between the holding component 535 and the fourth frame 510. The second elastic element 540 can drive the holding component 535 to rotate so that the holding component 535 holds the locking component 534 in place. During the test, the second elastic element 540 can drive the holding component 535 so that the hooks of the holding component 535 are tightly hooked onto the hooks of the locking component 534. After the test is completed, the holding component 535 can be moved so that the hooks of the holding component 535 are disengaged from the hooks of the locking component 534.

[0052] like Figure 11 As shown, a first elastic element 539 is connected between the fourth frame 510 and the locking assembly 534. The first elastic element 539 can drive the locking assembly 534 to move backward. When the two hooks disengage from each other, the first elastic element 539 can drive the locking assembly 534 to move backward and release the locking state. At this time, the locking handle 532 can be rotated to take out the component to be tested.

[0053] like Figure 10 As shown, a first elastic element 539 is connected between the fourth frame 510 and the locking assembly 534. The first elastic element 539 can drive the locking assembly 534 to move backward. When the two hooks are disengaged, the first elastic element 539 can drive the locking assembly 534 to move the locking cantilever backward. At this time, the locking handle can be rotated to take out the product to be tested 200.

[0054] like Figure 8 As shown, an auxiliary test component 520 is also provided on one side of the fourth rack 510. The auxiliary test component 520 also includes a complete IMU unit. During the test, the auxiliary test component 520 and the product under test 200 move together to calibrate the test data.

[0055] like Figures 1 to 3 The image shows another type of inertial testing fixture, also located at the end of a three-axis moving assembly, used to clamp different models and specifications of test products 200. Specifically, this inertial testing fixture includes: a first frame 100; a receiving portion 110 disposed on the first frame 100, used to place the test product 200; and a clamping assembly 123 movably connected to the first frame 100, capable of moving relative to the first frame 100 to a first position or a second position. When the clamping assembly 123 is in the first position, it can clamp the test product 200 onto the receiving portion 110. When the clamping assembly 123 is in the second position, it avoids the path for the test product 200 to be removed from the receiving portion 110.

[0056] Using the aforementioned inertial testing fixture, during testing, the product under test 200 can be placed in the receiving portion 110, and then the clamping component 123 can be moved to the first position, so that the clamping component 123 stably fixes the product under test 200 in the receiving portion 110, and then the test begins; after the test is completed, the clamping component 123 can be moved to the second position to make way for the product under test 200 to be removed from the receiving portion 110, and then the product under test 200 can be removed; the entire testing process does not require disassembling the clamping component 123, which can effectively shorten the testing time and improve the testing efficiency.

[0057] The clamping component 123 can switch between the first position and the second position in a variety of ways, such as sliding or rotating the clamping component 123 to the first frame 100, and switching positions by sliding or rotating.

[0058] like Figure 2 As shown, the upper end of the receiving part 110 is open. When the clamping component 123 is in the first position, the clamping component 123 is above the product under test 200. When the clamping component 123 is in the second position, the clamping component 123 avoids the position above the opening of the receiving part 110. The product under test 200 is placed into or removed from the receiving part 110 through the opening at the upper end of the receiving part 110. When the clamping component 123 is in the first position, the clamping component 123 presses down on the product under test 200 above it. When the clamping component 123 is in the second position, the clamping component 123 can avoid the opening at the upper end of the receiving part 110, so that the product under test 200 can be removed more smoothly.

[0059] Specifically, the clamping assembly 123 is rotatably connected to the receiving portion 110, and the clamping assembly 123 can rotate to a first position or a second position; wherein, the inner end of the clamping assembly 123 can rotate to press down on the product to be tested 200, which is the first position of the clamping assembly 123; and the inner end of the clamping assembly 123 can also rotate to a position that avoids the opening at the upper end of the receiving portion 110, which is the second position of the clamping assembly 123.

[0060] like Figure 1 , Figure 2 As shown, the inertial testing fixture also includes a driving device, which is used to drive the clamping assembly 123 to rotate to a first position or a second position. Specifically, the driving device can drive the clamping assembly 123 to rotate, so that the clamping assembly 123 switches between the first position and the second position. At this time, the driving device can use a motor to directly drive the clamping assembly 123 to rotate, or it can use a linear module to drive one end of the clamping assembly 123 to move, so that the entire clamping assembly 123 rotates.

[0061] Specifically, the driving device includes a clamping cylinder 121 mounted on the first frame 100. The piston of the clamping cylinder 121 is rotatably connected to the clamping assembly 123. Specifically, the piston of the clamping cylinder 121 is fixedly connected to the clamping connecting rod 122. The clamping connecting rod 122 is rotatably connected to the outer end of the clamping assembly 123. The cylinder can control the clamping assembly 123 to rotate by driving the clamping connecting rod 122 to move up and down, so that the clamping assembly 123 switches between a first position and a second position.

[0062] like Figure 3 As shown, there are multiple clamping components 123, which are distributed circumferentially along the receiving portion 110. Specifically, there are two clamping components 123, each of which is driven by a clamping cylinder 121 to press down on the product 200 to be tested at different positions on the outer periphery of the receiving portion 110.

[0063] like Figure 3 As shown, the inertial testing fixture also includes a test plug 132 that is slidably disposed on the first frame 100. When the product under test 200 is placed on the receiving part 110, the test plug 132 can slide to insert into the product under test 200. When the product under test 200 is installed in the placement part 531 in the prescribed position, the test plug 132 can be moved directly to insert into the product under test 200, which is convenient for testing.

[0064] Specifically, the inertial testing fixture also includes a plug-in cylinder 131 mounted on the first frame 100. The plug-in cylinder 131 can drive the test plug 132 to slide. The plug-in cylinder 131 can drive the test plug 132 to slide, so that the test plug 132 is inserted into the product under test 200.

[0065] like Figure 3 As shown, a position switch 140 is provided at the bottom of the receiving part 110. When the product under test 200 is placed in the receiving part 110, the position switch 140 can be triggered by the product under test 200. After the product under test 200 is correctly placed in the receiving part 110, the position switch 140 is triggered, and the control system can control the clamping cylinder 121 to drive the clamping component 123 to switch to the first position, and at the same time control the insertion cylinder to drive the test plug 132 to insert into the product under test 200. After the test is completed, the control system can control the clamping cylinder 121 to drive the clamping component 123 to switch to the second position, and at the same time control the insertion cylinder 131 to drive the test plug 132 to pull out the product under test 200, so that the product under test 200 can be taken out.

[0066] like Figure 2 As shown, a buffer pad is provided on the clamping assembly 123. When the clamping assembly 123 is in the first position, the buffer pad abuts against the test product 200.

[0067] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An inertial testing fixture, characterized in that, include: Fourth rack (510); A placement part (531) is provided on the fourth frame (510). The placement part (531) is used to place the product to be tested (200). The placement part (531) is provided with a receiving groove for accommodating the product to be tested (200). The inner wall of the receiving groove has a Teflon coating. A fixing device is movably mounted on the fourth frame (510), and the fixing device is used to fix the product to be tested (200) on the placement part (531); A locking device is movably mounted on the fourth frame (510). When the fixing device fixes the product to be tested (200) to the placement part (531), the locking device can move to lock the fixing device. A terminal assembly (537) is disposed on the locking device, and when the locking device moves to lock the fixing device, the terminal assembly (537) is electrically connected to the product under test (200); An auxiliary test component (520) is disposed on the fourth rack (510), and the auxiliary test component (520) includes an IMU unit; The fixing device includes a locking handle (532) rotatably connected to the fourth frame (510), the locking handle (532) being rotatable to press the product to be tested (200) into the placement part (531); The fixing device also includes a pre-tightening component (536) disposed on the locking handle (532). When the locking handle (532) presses the product to be tested (200) into the placement part (531), the pre-tightening component (536) can provide a pre-tightening force to the locking handle (532) to maintain the fixed state. The locking device includes: A locking assembly (534) is slidably connected to the fourth frame (510), and a terminal assembly (537) is disposed on the locking assembly (534); The locking cantilever is fixedly mounted on the locking assembly (534). When the locking handle (532) is rotated to press the product to be tested (200) into the placement part (531), the locking cantilever can move above the locking handle (532) under the drive of the locking assembly (534) and prevent the locking assembly (534) from rotating. The fourth frame (510) is provided with a locking slide rail (542) extending in the front-to-back direction, and the locking assembly (534) is provided with a locking slider (541), and the locking assembly (534) and the locking slider (541) are slidably engaged.

2. The inertial testing fixture according to claim 1, characterized in that, The fixing device also includes a pressure pad (533) disposed at the lower end of the locking handle (532), the pressure pad (533) being able to abut against the product under test (200).

3. The inertial testing fixture according to claim 1, characterized in that, The locking handle (532) has a handle fixedly installed at its front end.

4. The inertial testing fixture according to claim 1, characterized in that, The pre-tightening component (536) is threadedly engaged with the locking handle (532).

5. The inertial testing fixture according to claim 1, characterized in that, A first elastic element (539) is connected between the fourth frame (510) and the locking assembly (534), and the first elastic element (539) can drive the locking assembly (534) to move backward.

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