HUD assembly abnormal sound knocking detection device

Abstract

The HUD assembly abnormal sound knocking detection device comprises a positioning installation bottom plate and a rubber hammer, the lower surface of the positioning installation bottom plate is provided with at least four bottom plate supporting legs, and the upper surface of the positioning installation bottom plate is fixedly provided with at least three quick clamping connectors. The head-up display HUD assembly is arranged above the positioning installation bottom plate and fixed to the corresponding quick-clamping connectors through the hanging lugs, the number of the quick-clamping connectors is the same as that of the hanging lugs, and the rubber hammer is used for knocking the HUD assembly. Therefore, the HUD assembly abnormal sound knocking detection device provided by the embodiment of the utility model only comprises the positioning mounting bottom plate, the at least four bottom plate supporting legs, the at least three quick-clamping connectors and the rubber hammer, is simple in structure, reduces the test cost, can perform detection through the rubber hammer, does not need a vibration table, reduces the damage probability of an HUD assembly sample piece, and improves the detection efficiency. And detection can be carried out without going to a special automobile main engine plant, so that the universality is high, and the feasibility is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and more specifically, to a device for detecting abnormal noises and knocking sounds from a HUD assembly. Background Technology

[0002] With the development of smart cockpit technology, the pre-installation rate of in-vehicle HUD (Head-Up Display) as a display carrier in the cockpit is constantly increasing in smart cars, bringing drivers a safe and comfortable interactive experience.

[0003] However, the HUD assembly has a complex internal structure, and the clearance between the internal structure and the moving parts also increases the risk of abnormal noise. Especially when the vehicle is driving on bumpy roads, abnormal noise can significantly reduce the driving experience and even affect driving safety.

[0004] Currently, abnormal noise testing for HUD assemblies is mainly conducted through feedback from automotive OEMs' off-line inspections, using vibration tables. This means that abnormal noise testing for HUD assemblies can only be performed at specialized automotive OEMs, resulting in poor feasibility. Furthermore, the frequent use of professional vibration tables to sweep frequencies on HUD assemblies increases the risk of damage to HUD assembly samples and increases testing costs. Utility Model Content

[0005] This invention provides a device for detecting abnormal noises and impacts in a HUD assembly, which can reduce testing costs and improve feasibility. The specific technical solution is as follows:

[0006] Firstly, this utility model provides a device for detecting knocking noises from a HUD assembly, comprising:

[0007] A positioning and mounting base plate is provided with at least four base plate legs on its lower surface and at least three quick-clamp connectors are fixedly mounted on its upper surface. The head-up display (HUD) assembly is located above the positioning and mounting base plate and is fixed to the corresponding quick-clamp connectors by means of hooks. The number of quick-clamp connectors is the same as the number of hooks.

[0008] A rubber mallet, used to strike the HUD assembly.

[0009] Optionally, the quick-clamp connector includes a support spring, a clamp fixing base plate, and a quick-locking elbow clamp;

[0010] The clamp fixing base plate is fixedly mounted on the upper surface of the positioning mounting base plate via the support spring, and the clamp fixing base plate is fixedly connected to the hook of the HUD assembly via the quick-locking elbow clamp.

[0011] Optionally, the quick-clamp connector may further include an upper shock-absorbing rubber, a round pin, a fastening screw, and a lower shock-absorbing rubber;

[0012] The upper shock-absorbing rubber is interference-fitted to the inner upper end of the support spring, and the upper end of the upper shock-absorbing rubber extending out of the support spring is interference-fitted into the first through hole of the clamp fixing base plate. The side of the clamp fixing base plate is provided with a first threaded hole, which communicates with the first through hole. The fastening screw is threadedly connected to the first threaded hole and extends out of the first threaded hole at its bottom to squeeze the upper shock-absorbing rubber.

[0013] The round pin head is fixedly installed on the top of the upper shock-absorbing rubber, the quick-locking elbow clamp is fixedly installed on the upper surface of the clamp fixing base plate, the lower shock-absorbing rubber is interference-fitted to the lower end of the support spring, and the bottom of the lower shock-absorbing rubber is fixedly installed on the upper surface of the positioning mounting base plate.

[0014] The positioning hole of the hook of the HUD assembly is sleeved on the outer periphery of the round pin head, and the hook is clamped between the quick-locking elbow clamp and the upper surface of the clamp fixing base plate.

[0015] Optionally, the quick-clamp connector further includes a first metal connecting plate;

[0016] The first metal connecting plate is fixedly installed on the top of the upper shock-absorbing rubber, and the round pin head is fixedly installed on the upper surface of the first metal connecting plate.

[0017] Optionally, the quick-clamp connector may further include a threaded post;

[0018] The threaded post is fixedly connected to the bottom of the lower shock-absorbing rubber, and the threaded post is fixedly connected to the corresponding second threaded hole on the positioning and mounting base plate by a nut.

[0019] Optionally, the quick-clamp connector further includes a second metal connecting plate;

[0020] The second metal connecting plate is fixedly installed on the bottom of the lower shock-absorbing rubber, and the threaded post is fixedly connected to the lower surface of the second metal connecting plate.

[0021] Optionally, the quick-locking elbow clamp includes an elbow clamp fixing seat, an elbow clamp, a threaded guide shaft, a clamping block, and a pressure plate;

[0022] The elbow clamp fixing seat is fixedly installed on the upper surface of the clamp fixing base plate. The elbow clamp and the pressure plate are both rotatably connected to the elbow clamp fixing seat, and the elbow clamp and the pressure plate are fixedly connected. The elbow clamp and the pressure plate are arranged perpendicular to each other.

[0023] The threaded guide shaft is detachably mounted on the pressure plate, and the clamping block is fixedly mounted on the bottom of the threaded guide shaft. The bottom of the clamping block is provided with a groove, the size of which is larger than the size of the round pin head. The hook of the HUD assembly is clamped between the lower surface of the clamping block and the upper surface of the clamp fixing base plate.

[0024] Optionally, the quick-locking elbow clamp further includes an upper washer, a lower washer, an upper nut, and a lower nut;

[0025] The pressure plate is provided with an elongated through hole, the upper washer is provided on the upper surface of the elongated through hole, the lower washer is provided on the lower surface of the elongated through hole, the threaded guide shaft passes through the second through hole of the lower washer and the third through hole of the upper washer from bottom to top, the upper nut is tightened on the upper surface of the upper washer, and the lower nut is tightened on the lower surface of the lower washer;

[0026] Loosen the upper nut and the lower nut, and the threaded guide shaft can move along the length of the elongated through hole.

[0027] Optionally, the hammerhead is covered with a hammer sheath made of silicone and leather.

[0028] Optionally, silicone shock-absorbing pads are fixedly installed at the bottom of the base plate legs.

[0029] As described above, this utility model embodiment provides a HUD assembly noise tapping detection device, including a positioning mounting base plate and a rubber mallet. The lower surface of the positioning mounting base plate has at least four base plate legs, and the upper surface of the positioning mounting base plate is fixedly mounted with at least three quick-clamp connectors. The head-up display (HUD) assembly is positioned above the positioning mounting base plate and fixed to the corresponding quick-clamp connectors via hooks. The number of quick-clamp connectors is the same as the number of hooks. The rubber mallet is used to tap the HUD assembly. Therefore, the HUD assembly noise tapping detection device provided by this utility model embodiment only includes a positioning mounting base plate, at least four base plate legs, at least three quick-clamp connectors, and a rubber mallet. Its simple structure reduces testing costs. Detection can be performed using only a rubber mallet, eliminating the need for a vibration table, thus reducing the probability of damage to the HUD assembly sample. Furthermore, it eliminates the need to go to a specialized automotive OEM for testing, making it highly versatile and improving feasibility.

[0030] The innovative aspects of this utility model embodiment include:

[0031] 1. The HUD assembly knocking detection device provided in this embodiment of the utility model only includes a positioning mounting base plate, at least four base plate legs, at least three quick-clamp connectors and a rubber mallet. The structure is simple, reducing the testing cost. The test can be carried out with a rubber mallet without the need for a vibration table, which reduces the probability of damage to the HUD assembly sample. It also eliminates the need to go to a special car OEM for testing, making it highly versatile and improving its feasibility.

[0032] 2. By fixing the lower part of the clamping base plate to the upper surface of the positioning mounting base plate with a support spring, the test posture of the HUD assembly when mounted on the positioning mounting base plate is consistent with the actual vehicle posture of the HUD assembly when mounted on the vehicle. By fixing the upper part of the clamping base plate to the hook of the HUD assembly with a quick-locking elbow clamp, the HUD assembly can be quickly clamped and released, improving efficiency.

[0033] 3. By providing a first threaded hole on the side of the clamp fixing base plate, and by having the first threaded hole communicate with the first through hole, the mounting height and mounting angle of the HUD assembly can be adjusted by adjusting the fastening screw that is threaded to the first threaded hole.

[0034] 4. By setting the first metal connecting plate, the round pin head is securely installed on the top of the upper shock-absorbing rubber.

[0035] 5. By setting threaded posts at the bottom of the lower shock-absorbing rubber, and fixing the threaded posts to the corresponding second threaded holes on the positioning and mounting base plate with nuts, the bottom of the lower shock-absorbing rubber is fixedly installed on the upper surface of the positioning and mounting base plate.

[0036] 6. By setting a second metal connecting plate, the threaded column is securely installed on the bottom of the lower shock-absorbing rubber.

[0037] 7. By setting the elbow clamp and pressure plate to be rotatably connected to the elbow clamp fixing seat, and the elbow clamp and pressure plate to be fixedly connected, and the elbow clamp and pressure plate to be set perpendicular to each other, the pressure plate can be moved by operating the elbow clamp during use, thereby clamping the hanging ear between the lower surface of the clamping block and the upper surface of the clamp fixing base plate. A large clamping force can be generated with a small force, so as to achieve fast and reliable clamping of the hanging ear.

[0038] 8. By setting the upper and lower nuts, the system can adapt to different ear thicknesses by loosening the upper and lower nuts, moving the threaded guide shaft up or down, and then tightening the upper and lower nuts to fix it. This allows for testing of HUD assemblies with different ear thicknesses.

[0039] 9. By covering the hammer head with a hammer sleeve made of silicone and leather, the required hammering force and frequency can be achieved while ensuring that the tested HUD assembly is not damaged during the test.

[0040] 10. The stability of the positioning and mounting base plate is maintained by fixing silicone shock-absorbing pads to the bottom of the base plate legs.

[0041] 11. The HUD assembly knocking detection device provided in this embodiment of the utility model is fixedly connected to each other, and the connection is stable and reliable, ensuring that no additional noise is generated during the knocking test, and meeting the requirements of the knocking bench test specification.

[0042] 12. The hanging ears are clamped by quickly locking the elbow clamp and clamp base plate, without the need to remove screws and nuts, which improves testing efficiency and meets the time requirements of the production line.

[0043] 13. By setting up an upper nut, a lower nut, and an elongated through hole, the system can adapt to HUD assemblies of different sizes by loosening the upper nut and lower nut, moving the threaded guide shaft along the length of the elongated through hole, and then tightening the upper nut and lower nut to fix it. This allows for testing of HUD assemblies of different sizes.

[0044] Of course, implementing any product or method of this utility model does not necessarily require achieving all of the advantages described above at the same time. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0046] Figure 1 A schematic diagram of a knocking and noise detection device for a HUD assembly provided in an embodiment of this utility model;

[0047] Figure 2 A schematic diagram of a quick-clamp connector provided in an embodiment of this utility model;

[0048] Figure 3 A schematic diagram of the structure of the quick-locking elbow clamp provided in the embodiment of this utility model.

[0049] Figures 1-3In the middle, 1 is the positioning mounting base plate, 2 is the base plate support leg, 3 is the quick clamp connector, 31 is the support spring, 32 is the clamp fixing base plate, 33 is the quick locking elbow clamp, 331 is the elbow clamp fixing seat, 332 is the elbow clamp, 333 is the threaded guide shaft, 334 is the clamping block, 335 is the pressure plate, 3351 is the long strip through hole, 336 is the upper washer, 337 is the lower washer, 338 is the upper nut, 339 is the lower nut, 34 is the upper shock-absorbing rubber, 35 is the lower shock-absorbing rubber, 36 is the first threaded hole, 37 is the threaded post, 4 is the HUD assembly, 5 is the hanging lug, 6 is the rubber hammer, and 7 is the silicone shock-absorbing pad. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0051] It should be noted that the terms "comprising" and "having," and any variations thereof, in the embodiments and drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0052] This utility model discloses a device for detecting abnormal noises and impacts in a HUD assembly, which can reduce testing costs and improve feasibility. The following is a detailed description of this utility model embodiment.

[0053] Figure 1 This is a schematic diagram of a HUD assembly knocking and noise detection device provided in an embodiment of the present invention.

[0054] See Figure 1 The HUD assembly knocking detection device provided in this embodiment includes a positioning mounting base plate 1 and a rubber hammer 6. The lower surface of the positioning mounting base plate 1 is provided with at least four base plate legs 2, and the upper surface of the positioning mounting base plate 1 is fixedly mounted with at least three quick-clamp connectors 3. For example, the thickness of the positioning mounting base plate 1 is not less than 5mm. The material of the positioning mounting base plate 1 is phenolic plastic board.

[0055] See also Figure 1The HUD (Head-Up Display) assembly 4 is positioned above the positioning and mounting base plate 1 and is fixed to the corresponding quick-clamp connector 3 via the lugs 5. The quick-clamp connector 3 is a device for quickly clamping the device, and the number of quick-clamp connectors 3 is the same as the number of lugs 5. For example, the number of quick-clamp connectors 5 is 3.

[0056] In this embodiment of the invention, the rubber mallet 6 is used to strike the HUD assembly 4 for testing. The mallet head of the rubber mallet 6 is made of polyurethane, and the outside of the mallet head is covered with a mallet sleeve made of silicone and leather.

[0057] Therefore, by setting the hammer head of the rubber hammer 6 to be made of polyurethane material and covering the outside of the hammer head with a hammer sleeve made of silicone and leather material, the required hammering force and frequency can be achieved while ensuring that the HUD assembly under test is not damaged during the test.

[0058] See also Figure 1 The bottom of the base plate support leg 2 is fixedly equipped with a silicone shock-absorbing pad 7. The top of the base plate support leg 2 can be fixedly connected to the lower surface of the positioning mounting base plate 1 by screws. For example, the screw size is M5. The positioning mounting base plate 1 has threaded mounting holes. The position of the threaded mounting holes and the number of base plate support legs 2 are determined according to the HUD assembly 4. After each base plate support leg 2 is installed, it can keep the HUD assembly 4 above stable. For example, there are 6 base plate support legs 2. The material of the base plate support leg 2 is metal. For example, the material of the base plate support leg 2 is aluminum alloy.

[0059] The silicone shock-absorbing pad 7 can be glued to the bottom of the base plate support leg 2. The function of the silicone shock-absorbing pad 7 is also to maintain stability.

[0060] Therefore, by fixing silicone shock-absorbing pads 7 to the bottom of the base plate support leg 2, the stability of the positioning and mounting base plate 1 is maintained.

[0061] In summary, the HUD assembly noise detection device provided in this embodiment includes a positioning mounting base plate 1 and a rubber mallet 6. The lower surface of the positioning mounting base plate 1 has at least four base plate legs 2, and the upper surface of the positioning mounting base plate 1 is fixedly mounted with at least three quick-clamp connectors 3. The head-up display (HUD) assembly 4 is positioned above the positioning mounting base plate 1 and fixed to the corresponding quick-clamp connector 3 via a hanging lug 5. The number of quick-clamp connectors 3 is the same as the number of hanging lugs 5. The rubber mallet 6 is used to strike the HUD assembly. Therefore, the HUD assembly noise detection device provided in this embodiment only includes a positioning mounting base plate 1, at least four base plate legs 2, at least three quick-clamp connectors 3, and a rubber mallet 6. Its simple structure reduces testing costs. Detection can be performed using the rubber mallet 6 without a vibration table, reducing the probability of damage to the HUD assembly sample. Furthermore, it eliminates the need for specialized automotive OEMs for testing, making it highly versatile and improving feasibility.

[0062] Furthermore, the components of the HUD assembly knocking detection device provided in this embodiment are all fixedly connected, ensuring stable and reliable connections, and guaranteeing that no additional noise will be generated during the knocking test, thus meeting the requirements of the knocking bench test specification.

[0063] Figure 2 This is a schematic diagram of a quick-clamp connector provided in an embodiment of the present invention. See also... Figure 2 The quick-clamp connector 3 includes a support spring 31, a clamp fixing base plate 32, and a quick-locking elbow clamp 33.

[0064] The clamp fixing base plate 32 is fixedly installed on the upper surface of the positioning mounting base plate 1 by a support spring 31, and the clamp fixing base plate 32 is fixedly connected to the hook 5 of the HUD assembly 4 by a quick-locking elbow clamp 33.

[0065] The quick-locking elbow clamp 33 can be fixedly installed on the upper surface of the clamp fixing base plate 32 by four screws.

[0066] The support spring 31 is custom-made from spring steel. The working length of the support spring 31 needs to ensure that the test posture of the HUD assembly 5 when it is installed on the positioning mounting base plate 1 is consistent with the actual vehicle posture of the HUD assembly 4 when it is installed on the vehicle, and the stiffness value K of the support spring 31 satisfies:

[0067]

[0068] Where M is the sprung mass of the HUD assembly, Ω Ν This is the inherent frequency of the HUD assembly.

[0069] Therefore, by fixing the lower part of the clamp fixing base plate 32 to the upper surface of the positioning mounting base plate 1 via the support spring 31, the test posture of the HUD assembly 5 when mounted on the positioning mounting base plate 1 is consistent with the actual vehicle posture of the HUD assembly 4 when mounted on the vehicle. By fixing the upper part of the clamp fixing base plate 32 to the hanging lug 5 of the HUD assembly 4 via the quick-locking elbow clamp 33, the HUD assembly 4 can be quickly clamped and released, improving efficiency.

[0070] Moreover, by quickly locking the elbow clamp 33 and the clamp fixing base plate 32 to clamp the hanging ear 5, there is no need to remove the screws and nuts, which can quickly clamp and improve testing efficiency and meet the time requirements of the production line.

[0071] See also Figure 2 The quick-clamp connector 3 also includes an upper shock-absorbing rubber 34, a round pin, a fastening screw, and a lower shock-absorbing rubber 35.

[0072] The upper damping rubber 34 is interference-fitted to the upper part of the support spring 31, and the upper part of the upper damping rubber 34 extending out of the support spring 31 is interference-fitted into the first through hole of the clamp fixing base plate 32. The side of the clamp fixing base plate 32 is provided with a first threaded hole 36, which is connected to the first through hole. The fastening screw is threaded to the first threaded hole 36 and extends out of the first threaded hole 36 to compress the upper damping rubber 34.

[0073] The round pin head is fixedly installed on the top of the upper shock-absorbing rubber 34, the quick-locking elbow clamp 33 is fixedly installed on the upper surface of the clamp fixing base plate 32, the lower shock-absorbing rubber 35 is interference-fitted to the lower end of the support spring 31, and the bottom of the lower shock-absorbing rubber 35 is fixedly installed on the upper surface of the positioning mounting base plate 1.

[0074] The quick-clamp connector 3 further includes a first metal connecting plate, which is fixedly installed on the top of the upper shock-absorbing rubber 34. A round pin head is fixedly installed on the upper surface of the first metal connecting plate. The fixing method can be adhesive or threaded connection, or any of the fixing methods in the prior art. This embodiment of the utility model does not limit this in any way. For example, the first metal connecting plate is an aluminum alloy plate.

[0075] Thus, by setting the first metal connecting plate, the round pin head is securely installed on the top of the upper shock-absorbing rubber 34.

[0076] For example, the height of the round pin is 2mm and the diameter is 7.5mm.

[0077] See also Figure 2The quick-clamp connector 3 also includes a threaded post 37, which is fixedly connected to the bottom of the lower shock-absorbing rubber 35. The threaded post 37 is fixedly connected to the corresponding second threaded hole on the positioning mounting base plate 1 by a nut.

[0078] Therefore, by setting a threaded post 37 at the bottom of the lower shock-absorbing rubber 35, and fixing the threaded post 37 to the corresponding second threaded hole on the positioning mounting base plate 1 with a nut, the bottom of the lower shock-absorbing rubber 35 is fixedly installed on the upper surface of the positioning mounting base plate 1.

[0079] The quick-clamp connector 3 also includes a second metal connecting plate, which is fixedly installed on the bottom of the lower shock-absorbing rubber 35, and the threaded post 37 is fixedly connected to the lower surface of the second metal connecting plate. The fixing method can be adhesive or threaded connection, or any of the fixing methods in the prior art; this embodiment of the invention does not limit this. For example, the second metal connecting plate is an aluminum alloy plate.

[0080] Therefore, by setting a second metal connecting plate, the threaded post 37 is securely installed on the bottom of the lower shock-absorbing rubber 35.

[0081] The positioning hole of the hook 5 of the HUD assembly 4 is fitted around the outer periphery of the round pin head, and the hook 5 is clamped between the quick-locking elbow clamp 33 and the upper surface of the clamp fixing base plate 32.

[0082] In other words, the function of the round pin is to position the loop 5.

[0083] When installing the mounting ears 5 of the HUD assembly 4, the mounting height and angle of the HUD assembly 4 can be adjusted by adjusting the fastening screws. Specifically, to adjust the mounting height, first loosen the fastening screws, then move the upper shock-absorbing rubber 34 up or down, and finally tighten the fastening screws to secure it. To adjust the mounting angle, first loosen the fastening screws, then rotate the clamp fixing base plate 32 to adjust the mounting angle, and then tighten the fastening screws to secure it.

[0084] Therefore, by providing a first threaded hole 36 on the side of the clamp fixing base plate 32, and by having the first threaded hole 36 communicate with the first through hole, the mounting height and mounting angle of the HUD assembly can be adjusted by adjusting the fastening screws threaded to the first threaded hole 36.

[0085] Figure 3 A schematic diagram of the quick-locking elbow clamp provided in this embodiment of the utility model is shown below. Figure 3 The quick-locking elbow clamp 33 includes an elbow clamp fixing seat 331, an elbow clamp 332, a threaded guide shaft 333, a clamping block 334, and a pressure plate 335.

[0086] The elbow clamp fixing seat 331 is fixedly installed on the upper surface of the clamp fixing base plate 32. The elbow clamp 332 and the pressure plate 335 are both rotatably connected to the elbow clamp fixing seat 331, and the elbow clamp 332 and the pressure plate 335 are fixedly connected. The elbow clamp 332 and the pressure plate 335 are arranged perpendicular to each other. The elbow clamp fixing seat 331 can be fixedly installed on the upper surface of the clamp fixing base plate 32 by screws. The rotatable connection between the elbow clamp 332 and the pressure plate 335 can be a rotatable connection through a rotating pin.

[0087] The threaded guide shaft 333 is detachably mounted on the pressure plate 335, and a clamping block 334 is fixedly mounted on the bottom of the threaded guide shaft 333. The bottom of the clamping block 334 is provided with a groove, the size of which is larger than the size of the round pin head. The lug 5 of the HUD assembly 4 is clamped between the lower surface of the clamping block 334 and the upper surface of the clamp fixing base plate 32.

[0088] like Figure 3 As shown, during use, the operator rotates the elbow clamp 332 clockwise, which drives the pressure plate 335 to rotate clockwise, thereby lifting the clamping block 334. Then, the positioning hole of the hanging ear 5 is fitted onto the outer circumference of the round pin head. The operator then rotates the elbow clamp 332 counterclockwise, which drives the pressure plate 335 to rotate counterclockwise, thereby fitting the groove at the bottom of the clamping block 334 onto the outside of the round pin head, thus clamping the hanging ear 5 between the lower surface of the clamping block 334 and the upper surface of the clamp fixing base plate 32.

[0089] Therefore, by setting the elbow clamp 332 and the pressure plate 335 to be rotatably connected to the elbow clamp fixing seat 331, and the elbow clamp 332 and the pressure plate 335 to be fixedly connected, and the elbow clamp 332 and the pressure plate 335 to be arranged perpendicular to each other, when in use, the elbow clamp 332 can be operated to drive the pressure plate 335 to move, thereby clamping the hanging ear 5 between the lower surface of the clamping block 334 and the upper surface of the clamp fixing base plate 32. A large clamping force can be generated with a small force, so as to achieve fast and reliable clamping of the hanging ear 5.

[0090] See also Figure 3 The quick-locking elbow clamp 33 also includes an upper washer 336, a lower washer 337, an upper nut 338, and a lower nut 339.

[0091] The pressure plate 335 is provided with an elongated through hole 3351. The upper washer 336 is provided on the upper surface of the elongated through hole 3351, and the lower washer 337 is provided on the lower surface of the elongated through hole 3351. The threaded guide shaft 333 passes through the second through hole of the lower washer 337 and the third through hole of the upper washer 336 from bottom to top. The upper nut 338 is tightened on the upper surface of the upper washer 336, and the lower nut 339 is tightened on the lower surface of the lower washer 337.

[0092] Loosen the upper nut 338 and the lower nut 339, and the threaded guide shaft 333 can move along the length of the elongated through hole 3351.

[0093] Since the thickness of the mounting ears 5 of different HUD assemblies 4 is different, when installing the mounting ears 5 of the HUD assembly 4, the upper nut 338 and the lower nut 339 can be loosened, and then the threaded guide shaft 333 can be moved up or down to adapt to the different thicknesses of the mounting ears 5. Then the upper nut 338 and the lower nut 339 can be tightened to fix it.

[0094] Therefore, by setting the upper nut 338 and the lower nut 339, the upper nut 338 and the lower nut 339 can be loosened, and then the threaded guide shaft 333 can be moved up or down, and then the upper nut 338 and the lower nut 339 can be tightened to fix it, so as to adapt to different thicknesses of the lugs 5 and realize the testing of HUD assemblies 4 with different lug 5 thicknesses.

[0095] Since different HUD assemblies 4 have different external dimensions, when installing the mounting ears 5 of the HUD assembly 4, the upper nut 338 and the lower nut 339 can be loosened, and then the threaded guide shaft 333 can be moved along the length of the elongated through hole 3351 to adapt to the different external dimensions of the HUD assembly 4. Then the upper nut 338 and the lower nut 339 can be tightened to fix it.

[0096] Therefore, by setting up an upper nut 338, a lower nut 339, and an elongated through hole 3351, the upper nut 338 and the lower nut 339 can be loosened, the threaded guide shaft 333 can be moved along the length of the elongated through hole 3351, and then the upper nut 338 and the lower nut 339 can be tightened to fix them, so as to adapt to HUD assemblies 4 of different sizes and realize the testing of HUD assemblies 4 of different sizes.

[0097] Taking the HUD assembly 4 with 3 ear loops 5 as an example, the process of detecting abnormal noise and impact using the HUD assembly abnormal noise and impact detection device provided in this utility model embodiment is as follows:

[0098] 1. Confirm the noise testing standards and testing environment.

[0099] First, set up the laboratory for the abnormal noise and impact testing procedure, specifying that the peak ambient noise level should not exceed 55dB. This can be achieved using sound-absorbing panels and soundproof doors. Before each batch of work orders begins testing, the ambient noise level must be continuously measured with a noise meter to ensure that the ambient noise meets the testing requirements.

[0100] The test temperature was set to 20℃-30℃, taking into account that the dimensions of the structural components may change slightly due to temperature variations, to ensure the consistency of variables in the HUD assembly sample test.

[0101] 2. Adjust the silicone vibration damping pads 7 between the HUD assembly noise and knocking detection device and the workbench.

[0102] Adjust the silicone shock-absorbing pads 7 to ensure that the base plate legs 3 are tightly fitted to the workbench surface. Before the formal test, use a rubber mallet 6 to repeatedly hammer and position the base plate 1. Confirm the additional abnormal noise that the HUD assembly abnormal noise knocking detection device will bring. Use a good sample of the HUD assembly, install it on the HUD assembly abnormal noise knocking detection device and clamp it with the quick-clamp connector 3 to ensure that the good sample of the HUD assembly does not loosen during the test.

[0103] 3. Select a control sample.

[0104] After the testing environment and the HUD assembly noise detection device are checked and found to be correct, a good sample of the HUD assembly and a non-good sample of the HUD assembly with abnormal noise need to be selected as control samples for production line workers to compare during the testing process. Depending on the source of the abnormal noise, a defective label needs to be affixed to the defective control sample, classifying and indicating the defective batch, cause, and rework plan to facilitate the classification and handling of defective products. At the same time, the knocking audio of the defective sample should be recorded for subsequent digital analysis of the noise-defective products.

[0105] 3. Start the test.

[0106] Place the HUD assembly to be tested onto the positioning mounting base plate 1, and sequentially insert the positioning holes of the three hanging ears into the corresponding round pins. Pull down the elbow clamp 332 to clamp the hanging ears 5 and fix the HUD assembly to be tested.

[0107] Use a rubber mallet 6 to hammer a specific part of the HUD assembly under test, with a frequency of 2 times / second for 10-15 seconds. During this time, it is necessary to distinguish whether the hammering sound conforms to the abnormal noise pattern and determine whether it is an abnormal noise part. If it is an abnormal noise part, a defective product label should be affixed, noting the defect information. After the work order is completed, the parts should be sent to the defective product analysis room for analysis and a rework solution should be proposed.

[0108] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of one embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing this utility model.

[0109] Those skilled in the art will understand that the modules in the apparatus of the embodiments can be distributed in the apparatus of the embodiments as described in the embodiments, or they can be located in one or more devices different from this embodiment with corresponding changes. The modules of the above embodiments can be combined into one module, or they can be further divided into multiple sub-modules.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A HUD assembly rattle knock detection device, characterized by, The application relates to a positioning and mounting base plate, a HUD assembly and a rubber hammer. The positioning and mounting base plate comprises a lower surface provided with at least four base plate legs and an upper surface fixedly provided with at least three quick-clamp connectors; the HUD assembly is arranged above the positioning and mounting base plate and is fixed to the corresponding quick-clamp connectors through ear hooks; the number of the quick-clamp connectors is the same as that of the ear hooks. The rubber hammer is used for knocking the HUD assembly.

2. The HUD assembly rattle knock detection apparatus of claim 1, wherein, The quick-clamp connector comprises a supporting spring, a clamp fixing base plate and a quick-locking elbow clamp. The lower surface of the clamp fixing base plate is fixedly arranged on the upper surface of the positioning and mounting base plate through the supporting spring; the upper surface of the clamp fixing base plate is fixedly connected with the ear hooks of the HUD assembly through the quick-locking elbow clamp.

3. The HUD assembly rattle knock detection apparatus of claim 2, wherein, The quick-clamp connector further comprises upper damping rubber, a round pin head, a fastening screw and lower damping rubber. The upper damping rubber is interference-fitted in the upper end of the supporting spring; the part of the upper damping rubber, which protrudes out of the supporting spring, is interference-fitted in a first through hole of the clamp fixing base plate; a first threaded hole is arranged on the side surface of the clamp fixing base plate and communicates with the first through hole; the fastening screw is threadedly connected with the first threaded hole and extrudes the upper damping rubber through the first threaded hole. The round pin head is fixedly arranged on the top of the upper damping rubber; the quick-locking elbow clamp is fixedly arranged on the upper surface of the clamp fixing base plate; the lower damping rubber is interference-fitted in the lower end of the supporting spring; the bottom of the lower damping rubber is fixedly arranged on the upper surface of the positioning and mounting base plate. The positioning hole of the ear hook of the HUD assembly is sleeved on the outer periphery of the round pin head; and the ear hook is clamped between the quick-locking elbow clamp and the upper surface of the clamp fixing base plate.

4. The HUD assembly rattle knock detection apparatus of claim 3, wherein, The quick-clamp connector further comprises a first metal connecting plate. The first metal connecting plate is fixedly arranged on the top of the upper damping rubber; and the round pin head is fixedly arranged on the upper surface of the first metal connecting plate.

5. The HUD assembly rattle knock detection apparatus of claim 3, wherein, The quick-clamp connector further comprises a threaded column. The threaded column is fixedly connected with the bottom of the lower damping rubber; and the threaded column is fixedly connected with a corresponding second threaded hole on the positioning and mounting base plate through a nut.

6. The HUD assembly rattle knock detection apparatus of claim 5, wherein, The quick-clamp connector further comprises a second metal connecting plate. The second metal connecting plate is fixedly arranged on the bottom of the lower damping rubber; and the threaded column is fixedly connected with the lower surface of the second metal connecting plate.

7. The HUD assembly rattle knock detection apparatus of claim 3, wherein, The quick-locking elbow clamp comprises an elbow clamp fixing seat, an elbow clamp, a threaded guide shaft, a pressing block and a pressing plate. The elbow clamp fixing seat is fixedly arranged on the upper surface of the clamp fixing base plate; the elbow clamp and the pressing plate are both rotationally connected with the elbow clamp fixing seat and are fixedly connected with each other; and the elbow clamp and the pressing plate are arranged perpendicularly to each other. The threaded guide shaft is detachably arranged on the pressing plate; the bottom of the threaded guide shaft is fixedly arranged with the pressing block; the bottom of the pressing block is provided with a groove; the size of the groove is larger than that of the round pin head; and the ear hook of the HUD assembly is clamped between the lower surface of the pressing block and the upper surface of the clamp fixing base plate.

8. The HUD assembly rattle knock detection apparatus of claim 7, wherein, The quick locking elbow clamp further comprises an upper gasket, a lower gasket, an upper nut and a lower nut; The pressing plate is provided with an elongated through hole, the upper gasket is arranged on the upper surface of the elongated through hole, the lower gasket is arranged on the lower surface of the elongated through hole, the threaded guide shaft passes through the second through hole of the lower gasket and the third through hole of the upper gasket in sequence from bottom to top, the upper nut is screwed on the upper surface of the upper gasket, and the lower nut is screwed on the lower surface of the lower gasket. The upper nut and the lower nut are loosened, and the threaded guide shaft can move along the length direction of the elongated through hole. 9.The HUD assembly rattle knock detection device of claim 1, wherein The hammer head of the rubber hammer is externally covered with a hammer sleeve made of silica gel and leather material. 10.The HUD assembly rattle knock detection device of claim 1, wherein The bottom of the bottom plate leg is fixedly provided with a silica gel damping pad.

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