A device for detecting the impact of car seat frames

Abstract

This invention relates to the field of automotive seat quality testing technology, and provides an automotive seat frame impact testing device, including a base plate, a pair of side plates, and a testing box. The pair of side plates are fixedly installed opposite each other on the top of the base plate, and the testing box is fixedly installed on the top of the pair of side plates. The bottom of the testing box is open for the automotive seat frame to enter. A lifting sealing plate is slidably installed between the pair of side plates, with the automotive seat frame installed on top of it. After the lifting sealing plate is raised and lowered, it closes the bottom of the testing box, thus sealing the testing box. The automotive seat frame impact testing device provided by this solution, through the combination design of a sealed testing box and a vacuum pump, effectively reduces the risk of injury to surrounding personnel from noise and splashed fragments generated during the testing process, significantly improving the safety of the testing operation.

Description

Technical Field

[0001] This invention belongs to the field of automotive seat quality testing technology, and particularly relates to an automotive seat frame impact testing device. Background Technology

[0002] The car seat frame is an essential component of a car. Some parts are inevitably connected by welding, bolts, etc. In order to ensure that the seat is not damaged when a person impacts the vehicle in the event of a collision, the frame is usually subjected to strength testing.

[0003] Currently, the quality testing of car seats usually involves simulating people sitting in the seat and observing whether the seat collapses based on the number of times it is repeatedly sat on; another method is to install the seat on a high-speed track and place a dummy on the seat to simulate a high-speed impact for testing.

[0004] However, since the current impact tests are all conducted in open spaces, noise reduction is not possible. This poses a significant risk of eardrum damage to observers and injury from flying debris, making it quite dangerous. Summary of the Invention

[0005] This invention provides an impact testing device for automotive seat frames, aiming to solve the problem mentioned in the background art that current impact testing is conducted in open spaces, which makes noise reduction impossible and poses a significant risk.

[0006] To solve the above problems, the present invention is implemented as follows: an impact testing device for an automotive seat frame, comprising: a base plate, a pair of side plates, and a testing box; the pair of side plates are fixedly installed opposite each other on the top of the base plate, and the testing box is fixedly installed on the top of the pair of side plates, with an opening at the bottom for the automotive seat frame to enter; a lifting sealing plate is slidably mounted between the pair of side plates, with the automotive seat frame installed on its top; the lifting sealing plate closes the bottom of the testing box after being raised or lowered, thus sealing the testing box; a lifting screw is rotatably mounted on the base plate between the pair of side plates, the lifting screw threaded through the lifting sealing plate, for raising or lowering the lifting sealing plate. The lifting screw extends to the inside of the testing box to lift the sealing plate into the testing box. Testing cylinders are fixedly installed on both sides of the testing box. The output rods of the two testing cylinders are located inside the testing box and are respectively equipped with a front impact block and a rear impact block for impact testing of the rear and front sides of the seat frame. A vacuum pump is fixedly installed on the testing box. The vacuum pump has an intake pipe and an exhaust pipe installed at its inlet and outlet ends, respectively. The intake end of the intake pipe is connected to the testing box and communicates with its inner cavity. This is used to extract internal air after the sealing plate closes the bottom of the testing box, creating a vacuum inside. The inner wall of the testing box and the top of the sealing plate are covered with a sound insulation layer.

[0007] Preferably, a vacuum sensor is provided on one side of the detection box, the sensing end of the vacuum sensor is located inside the detection box, and a control box is fixedly installed on the detection box. The detection cylinder, vacuum pump and vacuum sensor are all connected to the control box.

[0008] Preferably, there are two lifting screws, a motor is fixedly installed on one side of the base plate, and sprockets are fixedly installed on the output shaft of the motor and the bottom ends of the two lifting screws. The same chain is sleeved on the three sprockets, and the motor is connected to the control box.

[0009] Preferably, a space adjustment plate is slidably installed inside the testing box. The space adjustment plate is located above the front impact block and the rear impact block. The height of the space adjustment plate is adjusted along with the seat frame that enters the testing box, thereby adjusting the size of the internal space of the testing box. The bottom of the space adjustment plate is always higher than the height of the seat frame.

[0010] Preferably, a pad is fixedly installed on the inner wall of the testing box to limit the minimum height of the space adjustment plate, and the height of the pad is higher than the installation height of the front impact block and the rear impact block.

[0011] Preferably, a conduction pipe is fixedly installed at the top of the space adjustment plate. An electromagnetic valve is provided on the conduction pipe, which is used to discharge air when the sealing plate is docked with the detection box and inhale air when the sealing plate is separated from the detection box. An air balance hole is opened at the top of the detection box, and the position of the air balance hole corresponds to that of the conduction pipe. The conduction pipe and the electromagnetic valve can pass through the air balance hole.

[0012] Preferably, an air suction hole is opened on one side of the detection box, and the air suction hole is communicated with the intake end of the air suction pipe. The installation heights of both the air suction hole and the vacuum sensor are lower than the installation height of the cushion block.

[0013] Preferably, a storage threaded cylinder is fixedly installed at the top of the lifting sealing plate. A top plate threaded rod is threadedly installed at the top end of the storage threaded cylinder. The top end height of the top plate threaded rod is always higher than the height of the seat frame installed on the lifting sealing plate, which is used to push the space adjustment plate upward by the seat frame first when the lifting sealing plate rises and falls. The installation positions of the storage threaded cylinder and the top plate threaded rod are错开 from the installation position of the seat frame, and the lifting trajectories of the storage threaded cylinder and the top plate threaded rod are错开 from the front impact block and the rear impact block.

[0014] Preferably, observation ports and maintenance ports are respectively provided on both sides of the detection box. An observation glass is fixedly installed in the observation port. A maintenance port sealing plate is detachably installed on one side of the detection box corresponding to the maintenance port by bolts to close the maintenance port. The maintenance port corresponds to the positions of the front impact block and the rear impact block.

[0015] Preferably, the base plate is in a "ji" shape, and a plurality of positioning holes are opened on the base plate.

[0016] Beneficial effects: Compared with the prior art, the automobile seat frame impact degree detection device provided by this solution effectively reduces the risk of harm to surrounding personnel caused by noise and sputtering fragments generated during the detection process through the combined design of a sealed detection box and a vacuum pump, and significantly improves the safety of the detection operation; the sound insulation layer covered on the inner wall of the detection box and the top of the lifting sealing plate further reduces the noise pollution during the detection process, improves the working environment, and protects the hearing health of the operators at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front three-dimensional structural schematic diagram of an automobile seat frame impact degree detection device provided by the present invention; <s

[0018] Figure 2 is the rear three-dimensional structural schematic diagram of an automobile seat frame impact degree detection device provided by the present invention;

[0019] Figure 3This is a bottom-view three-dimensional structural diagram of an impact detection device for an automobile seat frame provided by the present invention;

[0020] Figure 4 This is a rear cross-sectional view of an impact detection device for an automotive seat frame provided by the present invention.

[0021] Figure 5 for Figure 4 An enlarged structural diagram of part A shown in the figure;

[0022] Figure 6 for Figure 4 An enlarged structural diagram of part B shown in the figure;

[0023] Figure 7 A front-view three-dimensional structural diagram of the sealing plate and frame mounting base;

[0024] Figure 8 for Figure 7 A schematic diagram of the three-dimensional structure shown from below;

[0025] Figure 9 A bottom-view three-dimensional structural diagram of the frame mounting base;

[0026] Figure 10 This is a schematic diagram of the transverse movement mechanism.

[0027] Figure 11 This is a front-view three-dimensional structural diagram of the impact block connecting mechanism;

[0028] Figure 12 for Figure 11 A rear-view stereoscopic structural diagram of the portion shown;

[0029] Figure 13 A front-view three-dimensional structural diagram of the pin, connecting block, and spline shaft components;

[0030] Figure 14 A bottom-view three-dimensional structural diagram of the guide slide and spline tube.

[0031] Reference numerals: 1. Base plate; 2. Side plate; 3. Detection box; 4. Lifting sealing plate; 5. Lifting screw; 6. Detection cylinder; 7. Front impact block; 8. Rear impact block; 9. Vacuum pump; 10. Suction pipe; 11. Exhaust pipe; 12. Vacuum sensor; 13. Control box; 14. Motor; 15. Sprocket; 16. Chain; 17. Space adjustment plate; 18. Pad; 19. Conductor pipe; 20. Solenoid valve; 21. Air balance hole; 22. Suction hole; 23. Storage threaded cylinder; 24. Top plate threaded rod; 25. Observation glass; 26. Inspection port sealing plate; 27. Positioning hole; 28. Frame mounting plate. 29. Mounting seat; 30. Track groove; 31. Track block; 32. Mounting hole; 33. Folding opening; 34. Support leg; 35. Displacement block; 36. Shaft seat one; 37. Shaft seat two; 38. Transverse screw; 39. Assembly shaft seat; 40. Driven shaft; 41. Pulley; 42. Synchronous belt; 43. Driven gear; 44. Rack; 45. U-shaped shaft bracket; 46. Pin; 47. Connecting block; 48. Assembly plate; 49. Impact block mounting plate; 50. Splined shaft; 51. Longitudinal support plate; 52. Transverse plate; 53. Guide round shaft; 54. Guide slide plate; 55. Splined cylinder; 56. Retaining spring. Detailed Implementation

[0032] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] This invention provides a device for detecting the impact of an automotive seat frame, such as... Figure 1-14As shown, the car seat frame impact testing device includes: a base plate 1, a pair of side plates 2, and a testing box 3. The pair of side plates 2 are fixedly installed on the top of the base plate 1 in an opposing manner. The testing box 3 is fixedly installed on the top of the pair of side plates 2, and the bottom of the testing box 3 is open for the car seat frame to enter. A lifting sealing plate 4 is slidably installed between the pair of side plates 2, and the car seat frame is installed on its top. The lifting sealing plate 4 closes the bottom of the testing box 3 after being raised and lowered, so that the testing box 3 is sealed. A lifting screw 5 is rotatably installed on the base plate 1 between the pair of side plates 2. The lifting screw 5 is threaded through the lifting sealing plate 4 and is used to raise and lower the lifting sealing plate 4. The top end of the lifting screw 5 is... The lifting sealing plate 4 extends into the testing box 3 to lift the sealing plate 4 into the testing box 3. Testing cylinders 6 are fixedly installed on both sides of the testing box 3. The output rods of the two testing cylinders 6 are located inside the testing box 3 and are respectively equipped with a front impact block 7 and a rear impact block 8, used to perform impact testing on the rear and front sides of the seat frame, respectively. A vacuum pump 9 is fixedly installed on the testing box 3. The inlet and outlet ends of the vacuum pump 9 are respectively equipped with a suction pipe 10 and an exhaust pipe 11. The inlet end of the suction pipe 10 is connected to the testing box 3 and communicates with its inner cavity, used to extract the internal air after the lifting sealing plate 4 seals the bottom of the testing box 3, so that the inside is in a vacuum. The inner wall of the testing box 3 and the top of the lifting sealing plate 4 are both covered with a sound insulation layer.

[0034] In this embodiment, during testing, the car seat frame to be tested is first installed on the top of the lifting sealing plate 4; then the lifting screw 5 is rotated, and through its threaded connection with the lifting sealing plate 4, the lifting sealing plate 4 is driven to rise along a pair of side uprights 2 until the bottom opening of the testing box 3 is sealed, so that a sealed space is formed inside the testing box 3; at this time, the vacuum pump 9 is started, and the air is extracted from the testing box 3 through the suction pipe 10, so that the inside reaches a vacuum state, while the sound insulation layer effectively reduces noise.

[0035] During the impact test, two test cylinders 6 are activated to drive the front impact block 7 and the rear impact block 8 to impact the front and rear sides of the seat frame respectively, simulating the actual collision situation and completing the test.

[0036] By combining the sealed testing chamber 3 with the vacuum pump 9, the risk of injury to surrounding personnel from noise and splashing debris generated during the testing process is effectively reduced, significantly improving the safety of the testing operation.

[0037] The coordinated design of the lifting screw 5 and the lifting sealing plate 4 enables the automated closing and opening of the bottom opening of the test box 3, simplifying the operation process and improving the testing efficiency. The sound insulation layer covering the inner wall of the test box 3 and the top of the lifting sealing plate 4 further reduces noise pollution during the testing process, improves the working environment, and protects the hearing health of the operators.

[0038] In a further preferred embodiment of the present invention, a vacuum sensor 12 is provided on one side of the detection box 3, the sensing end of the vacuum sensor 12 is located inside the detection box 3, and a control box 13 is fixedly installed on the detection box 3. The detection cylinder 6, the vacuum pump 9 and the vacuum sensor 12 are all connected to the control box 13.

[0039] In this embodiment, before use, the control box 13 presets the vacuum threshold, and the detection cylinder 6, vacuum pump 9 and vacuum sensor 12 are electrically connected to the control box 13 to ensure that the devices can work together.

[0040] After the vacuum pump 9 is started, the sensing end of the vacuum sensor 12 monitors the vacuum level in the detection chamber 3 in real time and transmits the data to the control box 13. When the vacuum level is lower than the preset threshold, the control box 13 controls the vacuum pump 9 to run continuously until the set value is reached.

[0041] After the vacuum level reaches the standard, the control box 13 drives the detection cylinder 6 according to the preset program, so that the front impact block 7 and the rear impact block 8 perform impact detection on the seat frame according to the set parameters, realizing fully automated control of the process.

[0042] The vacuum sensor 12 provides real-time feedback on the vacuum level inside the detection chamber 3, and combined with the intelligent adjustment of the control box 13, ensures that the detection environment is always in a stable vacuum state. The control box 13 centrally controls the detection cylinder 6, vacuum pump 9, and vacuum sensor 12, realizing full automation from vacuum extraction to impact detection, significantly reducing manual intervention and improving detection efficiency.

[0043] In a further preferred embodiment of the present invention, there are two lifting screws 5, a motor 14 is fixedly installed on one side of the base plate 1, and sprockets 15 are fixedly installed on the output shaft of the motor 14 and the bottom ends of the two lifting screws 5. The same chain 16 is sleeved on the three sprockets 15, and the motor 14 is connected to the control box 13.

[0044] In this embodiment, the motor 14 is electrically connected to the control box 13, and the lifting height parameters of the sealing plate 4 are preset in the control box 13 to ensure that the motor 14 can receive and execute control commands.

[0045] The motor 14 is started by the control box 13, and its output shaft drives the sprocket 15 to rotate. The chain 16 synchronously drives the sprocket 15 at the bottom of the two lifting screws 5, so as to realize the synchronous rotation of the two lifting screws 5. When the two lifting screws 5 rotate synchronously, the sealing plate 4 is driven to rise and fall along the side plate 2 through the threaded connection until the preset height is reached, so as to complete the sealing or opening of the bottom of the detection box 3.

[0046] In a further preferred embodiment of the present invention, a space adjustment plate 17 is slidably installed inside the detection box 3. The space adjustment plate 17 is located above the front impact block 7 and the rear impact block 8. The space adjustment plate 17 adjusts its height as it enters the seat frame inside the detection box 3, thereby adjusting the size of the internal space of the detection box 3. The bottom of the space adjustment plate 17 is always higher than the height of the seat frame.

[0047] In this embodiment, the seat frame to be tested is sent into the testing box 3 by lifting the sealing plate 4.

[0048] The space adjustment plate 17 adjusts its lifting position according to the actual height of the seat frame, so that its bottom is always higher than the top of the seat frame, and forms an adjustable detection space between it and the top of the detection box 3.

[0049] The space adjustment plate 17 can dynamically adjust the internal space of the test box 3 according to the height of the seat frame, avoiding waste or insufficient test space due to fixed space, and improving the versatility and flexibility of the test equipment.

[0050] In a further preferred embodiment of the present invention, a pad 18 is fixedly installed on the inner wall of the detection box 3 to limit the minimum height of the space adjustment plate 17. The height of the pad 18 is higher than the installation height of the front impact block 7 and the rear impact block 8.

[0051] In this embodiment, a pad 18 is pre-fixed on the inner wall of the detection box 3 to ensure that its height is higher than the installation height of the front impact block 7 and the rear impact block 8, serving as the minimum height limit reference for the space adjustment plate 17.

[0052] When the space adjustment plate 17 descends inside the test box 3, it stops after its bottom contacts the pad block 18. At this time, the internal space of the test box 3 reaches the minimum adjustable height, ensuring that a safe operating distance is left between the seat frame and the front impact block 7 and the rear impact block 8 during the test.

[0053] In a further preferred embodiment of the present invention, a guide pipe 19 is fixedly installed on the top of the space adjustment plate 17. A solenoid valve 20 is provided on the guide pipe 19 for discharging air when the sealing plate 4 is lifted and docked with the detection box 3, and for drawing in air when the sealing plate 4 is lifted and separated from the detection box 3. An air balance hole 21 is provided on the top of the detection box 3. The air balance hole 21 is positioned corresponding to the guide pipe 19. The guide pipe 19 and the solenoid valve 20 can pass through the air balance hole 21.

[0054] In this embodiment, when the lifting sealing plate 4 is about to dock with the detection box 3, the control box 13 opens the solenoid valve 20 to switch the connection so that the guide pipe 19 is in the exhaust state. After the lifting sealing plate 4 and the detection box 3 are docked, the solenoid valve 20 closes, and the air balance hole 21 corresponds to the position of the guide pipe 19 to form an airflow channel. At this time, the vacuum pump 9 is started to evacuate the vacuum.

[0055] When the test is completed and the sealing plate 4 is separated from the test box 3, the solenoid valve 20 is switched by the control box 13 so that the guide pipe 19 is changed to draw air into the test box 3, which helps the sealing plate 4 to open smoothly. At the same time, the air balance hole 21 maintains the airflow balance.

[0056] For ease of operation and use, the guide pipe 19 and solenoid valve 20 can be set in two sets, one for exhaust switching and the other for intake switching. Alternatively, one solenoid valve 20 can be a three-way valve for switching.

[0057] In a further preferred embodiment of the present invention, an air intake hole 22 is provided on one side of the detection box 3. The air intake hole 22 is connected to the air inlet end of the air intake pipe 10. The installation height of the air intake hole 22 and the vacuum sensor 12 is lower than the installation height of the pad block 18.

[0058] In this embodiment, the air inlet of the suction pipe 10 is connected to the air inlet 22 opened on one side of the detection box 3 to ensure that the air inlet 22 serves as the air intake of the vacuum system. At the same time, it is confirmed that the sensing end of the vacuum sensor 12 is located inside the detection box 3 and is at the same height level as the air inlet 22.

[0059] After the vacuum pump 9 is started, air is drawn from the test chamber 3 through the suction port 22. The vacuum sensor 12 monitors the vacuum level in the test chamber 3 in real time and feeds the data back to the control box 13. The control box 13 adjusts the operating status of the vacuum pump 9 according to the preset threshold.

[0060] By setting the vacuum sensor 12 and the suction port 22 at a height lower than the pad block 18, it is ensured that the space inside the detection box 3 can be effectively monitored and vacuumed under any conditions, avoiding monitoring errors caused by spatial layering.

[0061] In a further preferred embodiment of the present invention, a receiving threaded cylinder 23 is fixedly installed on the top of the lifting sealing plate 4, and a top plate threaded rod 24 is threadedly installed on the top end of the receiving threaded cylinder 23. The top end height of the top plate threaded rod 24 is always set higher than the height of the seat frame installed on the lifting sealing plate 4, so that when the lifting sealing plate 4 is raised or lowered, the seat frame pushes the space adjustment plate 17 upward first. The installation positions of the receiving threaded cylinder 23 and the top plate threaded rod 24 are staggered from the installation positions of the seat frame, and the lifting trajectories of the receiving threaded cylinder 23 and the top plate threaded rod 24 are staggered from the front impact block 7 and the rear impact block 8.

[0062] In this embodiment, the storage threaded cylinder 23 is fixedly installed on the top of the lifting sealing plate 4, and the top plate threaded rod 24 is threadedly connected to the top of the storage threaded cylinder 23. The height of its top end is adjusted by rotating the top plate threaded rod 24 to ensure that it is always higher than the height of the seat frame installed on the lifting sealing plate 4. At the same time, it is confirmed that the installation positions of the storage threaded cylinder 23 and the top plate threaded rod 24 avoid the lifting trajectory of the seat frame and the front impact block 7 and the rear impact block 8.

[0063] During the lifting and lowering of the sealing plate 4, the top of the threaded rod 24 of the top plate first contacts the bottom of the space adjustment plate 17. As the sealing plate 4 continues to rise, the threaded rod 24 of the top plate, through the support of the threaded cylinder 23, pushes the space adjustment plate 17 upward, thereby adjusting the size of the internal space of the detection box 3. When the space adjustment plate 17 is adjusted to the appropriate position, the detection cylinder 6 is activated, and the front impact block 7 and the rear impact block 8 perform impact detection on the seat frame within the preset space, completing the detection process.

[0064] The cooperation between the top plate threaded rod 24 and the storage threaded cylinder 23 enables the automatic upward movement of the space adjustment plate 17 during the lifting and lowering of the sealing plate 4, simplifying space adjustment operations and improving testing efficiency. The top of the top plate threaded rod 24 is always higher than the seat frame, ensuring that the seat frame will not collide with the space adjustment plate 17 during testing, thus improving the safety of the testing process. The installation position and lifting trajectory design of the storage threaded cylinder 23 and the top plate threaded rod 24 avoid interference with the seat frame and impact block, enabling the testing equipment to be compatible with seat frames of different sizes and shapes, improving the equipment's versatility. The threaded connection design between the storage threaded cylinder 23 and the top plate threaded rod 24 facilitates the height adjustment of the top plate threaded rod 24, reducing the complexity and cost of equipment maintenance.

[0065] In a further preferred embodiment of the present invention, the detection box 3 has an observation port and a maintenance port on both sides respectively. An observation glass 25 is fixedly installed in the observation port. The inspection box 3 is detachably installed with a maintenance port sealing plate 26 on the side of the maintenance port by bolts to close the maintenance port. The maintenance port corresponds to the position of the front impact block 7 and the rear impact block 8.

[0066] In this embodiment, through the observation glass 25 fixedly installed in the observation port of the detection box 3, the operator can observe the impact state of the seat frame in real time during the detection process, ensuring that the detection process proceeds according to the preset parameters.

[0067] When the detection equipment fails or requires regular maintenance, the operator can remove the maintenance port sealing plate 26 on one side of the detection box 3 where the maintenance port is located (the maintenance port sealing plate 26 is detachably connected to the detection box 3 by bolts), exposing the positions of the front impact block 7 and the rear impact block 8, for troubleshooting or component replacement.

[0068] After completing the repair or maintenance work, reinstall the maintenance port sealing plate 26 to ensure the sealing performance of the detection box 3 and prepare for the next detection.

[0069] In a further preferred embodiment of the present invention, the base plate 1 is in a "U" shape, and a plurality of positioning holes 27 are provided on the base plate 1.

[0070] In this embodiment, according to the equipment installation requirements, by using the plurality of positioning holes 27 provided on the base plate 1, the base plate 1 is firmly installed at the preset position through bolts or other fasteners, ensuring the stability of the overall structure of the detection equipment. The "U" shape structure facilitates the installation of the sprocket 15 and the chain 16.

[0071] In order to further improve the use effect of the present device, in addition to the above solutions, this solution also has the following embodiments:

[0072] In another embodiment of the present invention, a frame mounting seat 28 is slidably installed on the top of the lifting sealing plate 4 for installing the seat frame. A track groove 29 is provided on the top of the lifting sealing plate 4. A track block 30 is slidably installed in the track groove 29. The track block 30 is fixedly connected to the bottom of the frame mounting seat 28. A plurality of mounting holes 31 are provided on the top of the frame mounting seat 28.

[0073] In this embodiment, the seat frame is placed on the top of the frame mounting seat 28, and is aligned and fixed with the preset mounting points of the seat frame through the mounting holes 31, ensuring that the seat frame is firmly installed and accurately positioned on the frame mounting seat 28.

[0074] By using the track groove 29 provided on the top of the lifting sealing plate 4, the track block 30 is slid in the track groove 29 of the frame mounting seat 28, thereby adjusting the lateral position of the seat frame in the detection box 3, facilitating the installation or removal of the seat frame by people, and avoiding the problem of the side plate 2 getting in the way.

[0075] In another embodiment of the present invention, the bottom of the frame mounting base 28 is provided with a folding opening 32, and a support leg 33 is hingedly installed in the folding opening 32. When the lifting sealing plate 4 is at the bottommost position, the frame mounting base 28 slides to the side of the lifting sealing plate 4, at which time the support leg 33 is released from the folding opening 32 and supported on the ground.

[0076] In this embodiment, when the lifting sealing plate 4 is not in the lowest position, the support leg 33 at the bottom of the frame mounting base 28 is stored in the folding opening 32 or not fully unfolded. At this time, the support leg 33 is not in contact with the ground. When the frame mounting base 28 is slid into the preset position of the lifting sealing plate 4, the support leg 33 is stored in the folding opening 32.

[0077] When the lifting sealing plate 4 is lowered to the lowest position, the frame mounting seat 28 slides to the side of the lifting sealing plate 4. At this time, the support leg 33 in the folding opening 32 is automatically released because it is no longer restricted by the top of the lifting sealing plate 4, and is supported on the ground by its hinge structure, providing support for the frame mounting seat 28 and the seat frame on it.

[0078] In another embodiment of the present invention, a transverse movement mechanism is provided on the lifting sealing plate 4 and the skeleton mounting base 28. The transverse movement mechanism includes a displacement block 34 fixedly installed on the side of the skeleton mounting base 28. A first shaft seat 35 and a second shaft seat 36 are fixedly installed on the top of the lifting sealing plate 4. The same transverse movement screw 37 is rotatably installed on the first shaft seat 35 and the second shaft seat 36. The transverse movement screw 37 is threaded through the displacement block 34 and is used to drive the skeleton mounting base 28 to move. An assembly shaft seat 38 is also fixedly installed on the top of the lifting sealing plate 4. A driven shaft 39 is rotatably installed on the assembly shaft seat 38. A pulley 40 is fixedly installed at one end of the driven shaft 39. A pulley 41 is fixedly sleeved on the transverse screw 37. The same synchronous belt 42 is sleeved on the pulley 41 and the pulley 40 so that the driven shaft 39 drives the transverse screw 37 to rotate synchronously. A driven gear 43 is fixedly installed at the other end of the driven shaft 39. A rack 44 is fixedly installed on a side plate 2 corresponding to the mounting shaft seat 38. The rack 44 meshes with or separates from the driven gear 43 so that when the lifting screw 5 drives the lifting sealing plate 4 to rise and fall, the driven gear 43 rolls along the rack 44, thereby causing the driven shaft 39 to rotate.

[0079] The rack 44 is set upwards from the bottom of the side plate 2, with a height of 1 / 8 to 1 / 0 of the height of the side plate 2. When the lifting sealing plate 4 rises, the driven gear 43 rolls along the rack 44, quickly retracting the frame mounting seat 28 into the middle position of the lifting sealing plate 4. After the driven gear 43 disengages from the rack 44, the frame mounting seat 28 is fixed in position under the self-locking action of the transverse screw 37, allowing the seat frame to smoothly enter the testing box 3. When the lifting sealing plate 4 descends, until the driven gear 43 re-meshes with the rack 44, and when the lifting sealing plate 4 descends to the bottom, that is, when the lifting sealing plate 4 is in contact with the base plate 1, the frame mounting seat 28 slides out to the extreme position on the side of the lifting sealing plate 4.

[0080] In this embodiment, a displacement block 34 is fixedly installed on the side of the frame mounting base 28, and a first shaft seat 35, a second shaft seat 36, and an assembly shaft seat 38 are fixedly installed on the top of the lifting sealing plate 4. A transverse screw 37 is rotatably installed on the first shaft seat 35 and the second shaft seat 36, and the transverse screw 37 passes through the displacement block 34. At the same time, a driven shaft 39 is rotatably installed on the assembly shaft seat 38. A pulley 40 is fixedly installed at one end of the driven shaft 39, and a pulley 41 is fixedly sleeved on the transverse screw 37. The pulley 41 and the pulley 40 are connected by a synchronous belt 42. A driven gear 43 is fixedly installed at the other end of the driven shaft 39, and a rack 44 that cooperates with the driven gear 43 is fixedly installed on the side plate 2.

[0081] When the sealing plate 4 is lifted and lowered, the driven gear 43 rolls along the rack 44, driving the driven shaft 39 to rotate. Through the synchronous belt 42, the transverse screw 37 rotates synchronously. Since the displacement block 34 is threadedly connected to the transverse screw 37, the skeleton mounting base 28 is driven to move laterally on the top of the sealing plate 4.

[0082] When the lifting sealing plate 4 rises, the driven gear 43 rolls along the rack 44 until it disengages. Under the self-locking action of the transverse screw 37, the frame mounting seat 28 is fixed in position, which facilitates the smooth entry of the seat frame into the testing box 3. When the lifting sealing plate 4 falls, the driven gear 43 re-engages with the rack 44 until the lifting sealing plate 4 falls to the bottom and fits against the base plate 1. At this point, the frame mounting seat 28 slides out to the extreme position on the side of the lifting sealing plate 4.

[0083] The design of the transverse movement mechanism enables the frame mounting base 28 to move automatically laterally on the top of the lifting sealing plate 4 without manual intervention, thus improving the automation and efficiency of the operation.

[0084] The threaded engagement between the transverse screw 37 and the displacement block 34, as well as the self-locking function of the transverse screw 37, ensures the precise and stable positioning of the frame mounting base 28 during movement, which is beneficial for the accurate installation and testing of the seat frame.

[0085] The design of the transverse movement mechanism enables the frame mounting base 28 to automatically complete the transverse movement operation during the lifting and lowering of the sealing plate 4, without the need for additional manual adjustment, which simplifies the operation process and improves work efficiency.

[0086] In another embodiment of the present invention, the output rod of the detection cylinder 6 is connected to the front impact block 7 and / or the rear impact block 8 by an impact block connecting mechanism. The impact block connecting mechanism includes a U-shaped shaft bracket 45 fixedly mounted on the output rod of the detection cylinder 6. The U-shaped shaft bracket 45 is located inside the detection box 3. A pin 46 is rotatably mounted on the U-shaped shaft bracket 45. A connecting block 47 is fixedly sleeved on the pin 46. The connecting block 47 is rotatably located inside the U-shaped shaft bracket 45. An assembly plate 48 is fixedly mounted on the connecting block 47. An impact block mounting plate 49 is detachably mounted on the assembly plate 48 by bolts. The impact block mounting plate 49 is fixedly connected to the front impact block 7 and / or the rear impact block 8. A spline shaft 50 is fixedly mounted on the top end of the pin 46. A spline shaft 50 is fixedly mounted on the top end of the U-shaped shaft bracket 45. There are two longitudinal support plates 51 located on the side of the spline shaft 50. A transverse plate 52 is fixedly installed between the two longitudinal support plates 51. A guide round shaft 53 is fixedly installed between the transverse plate 52 and the top of the U-shaped shaft bracket 45. A guide slide plate 54 is slidably sleeved on the guide round shaft 53. The side of the guide slide plate 54 is in slidable contact with both longitudinal support plates 51. The guide slide plate 54 is located above the spline shaft 50. A spline cylinder 55 is fixedly installed at the bottom of the guide slide plate 54. The spline cylinder 55 is sleeved on the spline shaft 50 and is used to fix the angle of the pin 46 and the connecting block 47 so that the front impact block 7 and / or the rear impact block 8 can be adjusted in impact angle. A retaining spring 56 is sleeved on the guide round shaft 53. The two ends of the retaining spring 56 abut against the transverse plate 52 and the guide slide plate 54, respectively.

[0087] In this embodiment, a U-shaped shaft bracket 45 is fixedly installed on the output rod of the detection cylinder 6, a pin 46 is rotatably installed on the U-shaped shaft bracket 45, a connecting block 47 is fixedly sleeved on the pin 46 and rotated within the U-shaped shaft bracket 45, an assembly plate 48 is fixedly installed on the connecting block 47, and an impact block mounting plate 49 is detachably installed on the assembly plate 48 using bolts, and then the impact block mounting plate 49 is fixedly connected to the front impact block 7 and / or the rear impact block 8.

[0088] A spline shaft 50 is fixedly installed at the top of the pin 46. Two longitudinal support plates 51 located on the sides of the spline shaft 50 are fixedly installed at the top of the U-shaped shaft bracket 45. A transverse plate 52 is fixedly installed between the two longitudinal support plates 51. A guide round shaft 53 is fixedly installed between the transverse plate 52 and the top of the U-shaped shaft bracket 45. A guide slide plate 54 is slidably sleeved on the guide round shaft 53, and its sides are in sliding contact with both longitudinal support plates 51. A spline cylinder 55 is fixedly installed at the bottom of the guide slide plate 54 and sleeved on the spline shaft 50. A retaining spring 56 is sleeved on the guide round shaft 53, so that its two ends abut against the transverse plate 52 and the guide slide plate 54 respectively.

[0089] When it is necessary to adjust the impact angle of the front impact block 7 and / or the rear impact block 8, overcome the elastic force of the retaining spring 56 and pull the guide slide plate 54 upward to disengage the splined cylinder 55 from the splined shaft 50. At this time, the pin 46 can be rotated to drive the connecting block 47, the mounting plate 48, the impact block mounting plate 49, and the front impact block 7 and / or the rear impact block 8 to rotate, thereby adjusting the impact angle. After the adjustment is completed, release the guide slide plate 54. Under the action of the retaining spring 56, the splined cylinder 55 is re-sleeved on the splined shaft 50, fixing the angle of the pin 46 and the connecting block 47, thereby fixing the impact angle. During operation, the adjustment is made through the inspection port.

[0090] The impact angle of the front impact block 7 and / or the rear impact block 8 can be adjusted according to actual testing needs through the design of the impact block connection mechanism, which can better simulate different impact scenarios and improve the accuracy and comprehensiveness of the test.

[0091] The impact block mounting plate 49 and the assembly plate 48 are connected by bolts for easy installation and removal of the front impact block 7 and / or the rear impact block 8, which facilitates equipment maintenance and component replacement.

[0092] The design of the spline shaft 50 and spline cylinder 55, along with the function of the retaining spring 56, ensures the fixed and stable angle of the pin 46 and the connecting block 47. During the impact process, it is not easy for them to loosen or shift, thus ensuring the accuracy of the impact angle and the reliability of the test results.

[0093] In summary, compared with related technologies, this device, through the combined design of the sealed detection chamber 3 and the vacuum pump 9, effectively reduces the risk of injury to surrounding personnel from noise and splashed debris generated during the detection process, and significantly improves the safety of the detection operation. The sound insulation layer covering the inner wall of the detection chamber 3 and the top of the lifting sealing plate 4 further reduces noise pollution during the detection process, improves the working environment, and protects the hearing health of the operators.

[0094] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0095] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A device for detecting the impact of an automotive seat frame, characterized in that, include: The system includes a base plate, a pair of side panels, and a testing box. The pair of side panels are fixedly installed on the top of the base plate in an opposing manner. The testing box is fixedly installed on the top of the pair of side panels. The bottom of the testing box is open for the car seat frame to enter. A lifting sealing plate is slidably installed between the pair of side panels, and the car seat frame is installed on top of it. After the lifting sealing plate is raised and lowered, it closes the bottom of the test box to make the test box airtight. A lifting screw is provided between the pair of side plates and is rotatably mounted on the base plate. The lifting screw is threaded through the lifting sealing plate and is used to lift and lower the sealing plate. The top end of the lifting screw extends into the detection box so that the sealing plate is lifted and enters the detection box. Both sides of the testing box are fixedly equipped with testing cylinders. The output rods of the two testing cylinders are located inside the testing box and are respectively equipped with front impact blocks and rear impact blocks, which are used to perform impact testing on the rear and front sides of the seat frame, respectively. A vacuum pump is fixedly installed on the testing box. The vacuum pump has an air intake pipe and an air exhaust pipe installed at its air inlet and exhaust ends, respectively. The air intake end of the air intake pipe is connected to the testing box and communicates with its inner cavity. It is used to extract the internal air after the bottom of the testing box is sealed by the lifting sealing plate, so that the inside is in a vacuum. The inner wall of the testing box and the top of the lifting sealing plate are both covered with a sound insulation layer. A frame mounting seat is slidably installed on the top of the lifting sealing plate for installing the seat frame; A displacement block is fixedly installed on the side of the frame mounting base. Shaft seat one, shaft seat two, and assembly shaft seat are fixedly installed on the top of the lifting sealing plate. The transverse screw is rotatably installed on shaft seat one and shaft seat two, and its transverse screw passes through the displacement block. At the same time, the driven shaft is rotatably installed on the assembly shaft seat. A pulley is fixedly installed on one end of the driven shaft. A pulley is fixedly sleeved on the transverse screw. The pulley and pulley are connected by a synchronous belt. A driven gear is fixedly installed on the other end of the driven shaft. A rack that mates with the driven gear is fixedly installed on the side plate.

2. The automotive seat frame impact testing device as described in claim 1, characterized in that, A vacuum sensor is provided on one side of the detection box. The sensing end of the vacuum sensor is located inside the detection box. A control box is fixedly installed on the detection box. The detection cylinder, vacuum pump and vacuum sensor are all connected to the control box.

3. The automotive seat frame impact testing device as described in claim 1, characterized in that, The lifting screw has two parts. A motor is fixedly installed on one side of the base plate. A sprocket is fixedly installed on the output shaft of the motor and the bottom end of the two lifting screws. The same chain is sleeved on the three sprockets. The motor is connected to the control box.

4. The automotive seat frame impact testing device as described in claim 2, characterized in that, The testing chamber is equipped with a height-adjustable sliding space adjustment plate, which is located above the front and rear impact blocks. The space adjustment plate adjusts its height along with the seat frame that enters the testing chamber, thereby adjusting the size of the internal space of the testing chamber. The bottom of the space adjustment plate is always higher than the height of the seat frame.

5. The automotive seat frame impact testing device as described in claim 4, characterized in that, A pad is fixedly installed on the inner wall of the testing box to limit the minimum height of the space adjustment plate. The height of the pad is higher than the installation height of the front impact block and the rear impact block.

6. The automotive seat frame impact testing device as described in claim 4, characterized in that, A conduction tube is fixedly installed at the top of the space adjustment plate. An electromagnetic valve is provided on the conduction tube, which is used to discharge air when the sealing plate is docked with the detection box and inhale air when the sealing plate is separated from the detection box. An air balance hole is opened at the top of the detection box, and the position of the air balance hole is correspondingly set with the conduction tube. The conduction tube and the electromagnetic valve pass through the air balance hole.

7. The automotive seat frame impact testing device as described in claim 5, characterized in that, An air suction hole is opened on one side of the detection box, and the air suction hole is communicated with the intake end of the air suction tube. The installation heights of both the air suction hole and the vacuum sensor are lower than the installation height of the cushion block.

8. The automotive seat frame impact testing device as described in claim 4, characterized in that, A storage threaded cylinder is fixedly installed at the top of the lifting sealing plate. A top plate threaded rod is threadedly installed at the top end of the storage threaded cylinder. The top end height of the top plate threaded rod is always higher than the height of the seat frame installed on the lifting sealing plate. When the lifting sealing plate moves up and down, the seat frame first pushes the space adjustment plate upward. The installation positions of the storage threaded cylinder and the top plate threaded rod are staggered from the installation position of the seat frame. The lifting and lowering trajectories of the storage threaded cylinder and the top plate threaded rod are staggered from the front shock block and the rear shock block.

9. The automotive seat frame impact testing device as described in claim 1, characterized in that, Both sides of the detection box respectively have an observation port and a maintenance port. An observation glass is fixedly installed in the observation port. A maintenance port sealing plate is detachably installed on one side of the detection box where the maintenance port is located by bolts to close the maintenance port. The maintenance port corresponds to the positions of the front shock block and the rear shock block.

10. The automotive seat frame impact testing device as described in claim 1, characterized in that, The base plate is in a "U" shape, and a plurality of positioning holes are opened on the base plate.

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