Door closing sound quality testing device with environment simulation function

Abstract

The invention relates to the technical field of vehicle door closing detection, in particular to a door closing sound quality testing device with an environment simulation function, which comprises a base, a top frame is fixed above the base through upright posts arranged at four top corners of the base, a stand is movably mounted on the side part of the base through a power guide rail, and a six-axis mechanical arm is mounted on the stand; a mounting seat is mounted at the end part of the mechanical arm, a grabber is arranged on the mounting seat, the grabber grabs a vehicle door handle to simulate manual operation, and the mechanical arm is used for providing power to simulate and execute real door opening and closing actions. According to the invention, the grabber cooperates with the movement of the mechanical arm to simulate automatic grabbing and door opening actions, for a hidden door handle, the push rod is driven to slide and stretch out to push and trigger the door handle to tilt, and the grabber is combined to grab the tilting part, so that the door opening and closing tests of different types of door handles can be completed without human assistance; and the automation and continuity of the test process are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle door closing detection, in particular to a test door closing sound quality testing device with environment simulation function. BACKGROUND

[0002] Vehicle door closing sound quality testing is a comprehensive evaluation around the subjective feeling and objective performance of door closing sound transmission to users. Usually in a controllable environment such as a semi-anechoic chamber, through the combination of professional technical subjective scoring and acoustic instrument objective measurement, the door closing sound under different working conditions is collected and analyzed. The ultimate goal is to optimize the door structure, lock body design, sealing system, sound insulation material and other components, so that the door closing sound not only meets the psychological expectation of users on vehicle quality, but also reflects the actual reliability of door assembly and sealing.

[0003] The existing detection equipment lacks environment simulation capability and cannot simulate the influence of temperature change on vehicle body materials, resulting in that the test results are disconnected with real vehicle scenes. In addition, in the traditional test equipment, the door opening execution structure is not provided, and the door is closed and locked, and manual assistance is required to open the door for multiple tests, which has low automation degree. SUMMARY

[0004] The purpose of the present application is to provide a test door closing sound quality testing device with environment simulation function to solve the technical problems proposed in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme.

[0006] A test door closing sound quality testing device with environment simulation function, comprising a base, a top frame fixed on the top of the base through columns arranged at the four top corners of the base, a rack table movably installed on the side of the base through a power guide rail, a six-axis mechanical arm installed on the rack table, an installation seat installed on the end of the mechanical arm, a grabber provided on the installation seat, a car door handle grabbed by the grabber to simulate human hand operation, a real opening and closing door action simulated by the mechanical arm providing power, a temperature simulation system provided on the top frame to form a wind field to simulate the test environment temperature, an arm support installed on one side of the rack table through a support, an artificial head installed on the other side of the rack table through a support, and a plurality of high-speed cameras uniformly distributed on the arm support.

[0007] Preferably, the temperature simulation system comprises a sub-air duct, a blowing head and a main air duct; the main air duct is fixed on one side of the top frame, and a plurality of sub-air ducts are arranged on the top frame along the length direction of the base and extend along the width direction of the base; the input ends of the sub-air ducts are in communication with the main air duct; a plurality of blowing heads downwardly arranged on the sub-air ducts; the input end of the main air duct is in communication with an external cold and hot air supply system through a pipeline; the base is provided with an inner cavity, and a plurality of elongated openings in communication with the inner cavity are arranged on the top surface of the base along the edge thereof; the side of the base is provided with an air suction opening in communication with the inner cavity, and the air suction opening is in communication with an external air suction equipment through a pipeline; wherein the air flow blown downwardly by the blowing head is sucked into the inner cavity through the elongated opening to form a ring-shaped air field.

[0008] Preferably, a water pipe extending along the length direction of the base is further arranged on the top frame, and a plurality of spraying heads downwardly arranged on the water pipe; the input end of the water pipe is in communication with an external water supply equipment through a pipeline.

[0009] Preferably, the gripper comprises a main body, an electric push cylinder, a piston body A, a clamping piece and a piston body B; the main body is installed on the mounting seat, and the end of the main body is provided with a gripping opening for accommodating a door handle; the main body is provided with a piston hole A, and a pair of piston holes B are symmetrically arranged on both sides of the gripping opening in the main body; the inner end walls of the two piston holes B close to each other are provided with sliding holes in communication with the outside; the piston body A is matchedly installed in the piston hole A, the electric push cylinder is fixed on the main body and extends into the piston hole A through the telescopic end and is connected with the piston body A; the piston body B is matchedly installed in the two piston holes B, and the clamping piece is matchedly and slidably installed in the two sliding holes and extends into the piston hole B and is connected with the corresponding piston body B; the main body is further provided with a pair of flow guide channels, one end of each of the flow guide channels is in communication with the piston hole A, and the other end is in communication with the corresponding piston hole B; when the clamping piece extends out, the door handle can be clamped and limited in the gripping opening.

[0010] Preferably, one end of the mounting seat is fixed with a frame seat, the front side of the frame seat is provided with an expansion hole, and a push rod is slidably installed in the expansion hole; the frame seat is provided with a driving device for driving the push rod to expand and contract; the mounting seat is provided with a driving mechanism, and the main body is movably installed on the mounting seat through the driving mechanism.

[0011] Preferably, the driving device is a push cylinder, which is fixed in the frame seat and has a telescopic end fixedly connected with the end of the push rod extending into the frame seat.

[0012] Preferably, a driving motor is fixed at the end of the mechanical arm, and the mounting seat is fixed on the output shaft end of the driving motor.

[0013] Preferably, the driving device adopts a linkage mechanism, which comprises a toothed roller, a rack A, a U-shaped arm, a pressure head and a rack B; the toothed roller is rotatably installed in the frame seat, the rack A is fixed on the end of the push rod located in the frame seat and is in meshing correspondence with the toothed roller; the rack B is limitingly and slidably installed in the frame seat and is perpendicular to the rack A; the U-shaped arm is fixed on one end of the rack B and extends to the end of the mounting seat away from the frame seat; the pressure head is installed on the side end of the U-shaped arm away from the frame seat and is in corresponding abutting and extruding fit with the side of the main body; the rack A is fixed with a return spring at the end away from the push rod, and the other end of the return spring is fixed with the mounting seat.

[0014] Preferably, a threaded hole is arranged on the end of the U-shaped arm away from the frame seat, and an adjusting screw is threadedly matched and installed in the threaded hole.

[0015] Preferably, the arm frame is adaptively matched with the door gap of the vehicle body; a plurality of insertion holes are uniformly distributed on the arm frame; a plurality of bolt rods are fixed on the back of each high-speed camera and can be matched and inserted into the insertion holes.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. The cold and hot airflow conveying system is constructed by the temperature simulation system, the inner cavity, the elongated opening and the air extraction opening can form a surrounding wind field around the test area, the temperature of the monitoring environment can be adjusted, and the spray head is used for spraying and humidifying, so that the temperature and humidity of the test site environment can be effectively simulated, the test area around the upper base is arranged in an open structure, the door echo interference in a closed space can be avoided, and the test environment parameters are consistent with the actual vehicle scene.

[0018] 2. The automatic grabbing and door opening actions can be simulated by the movement of the gripper and the mechanical arm, the hidden door handle can be pushed and triggered to be lifted by driving the push rod to slide and extend, the lifted part can be grabbed by the gripper, the opening and closing test of different types of door handles can be completed without manual assistance, and the automation and continuity of the test process are improved.

[0019] 3. The linkage mechanism is used as the driving device for the telescopic adjustment of the push rod, cooperates with the planar movement of the main body, realizes the mechanical linkage effect, does not need to be additionally provided with a linear driving structure, reduces the driving cost, and when the gripper moves to the required grabbing position, the linkage mechanism can be triggered to work and drive the push rod to slide and extend, so that the timing and position of the movement of the gripper and the telescopic movement of the push rod are effectively matched. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic view of the overall structure of the present application.

[0021] Figure 2 A partial structure schematic diagram is shown in FIG. 1; Figure 1 A partial structure schematic diagram is shown in FIG. 1;

[0022] Figure 3 A partial structure schematic diagram is shown in FIG. 1; Figure 2 A partial structure schematic diagram is shown in FIG. 1;

[0023] Figure 4 A partial structure schematic diagram is shown in FIG. 1; A partial structure schematic diagram is shown in FIG. 1;

[0024] A partial structure schematic diagram is shown in FIG. 1; Figure 5 A partial structure schematic diagram is shown in FIG. 1; Figure 4 A partial structure schematic diagram is shown in FIG. 1; A partial structure schematic diagram is shown in FIG. 1;

[0025] A partial structure schematic diagram is shown in FIG. 1; Figure 6 A partial structure schematic diagram is shown in FIG. 1; A partial structure schematic diagram is shown in FIG. 1;

[0026] A partial structure schematic diagram is shown in FIG. 1; Figure 7 A partial structure schematic diagram is shown in FIG. 1; A partial structure schematic diagram is shown in FIG. 1;

[0027] A partial structure schematic diagram is shown in FIG. 1; Figure 8 A partial structure schematic diagram is shown in FIG. 1; Figure 7 A partial structure schematic diagram is shown in FIG. 1; A partial structure schematic diagram is shown in FIG. 1;

[0028] A partial structure schematic diagram is shown in FIG. 1; Figure 9 A partial structure schematic diagram is shown in FIG. 1; A partial structure schematic diagram is shown in FIG. 1;

[0029] A partial structure schematic diagram is shown in FIG. 1; Figure 10 A partial structure schematic diagram is shown in FIG. 1; A partial structure schematic diagram is shown in FIG. 1;

[0030] A partial structure schematic diagram is shown in FIG. 1; Figure 11 A partial structure schematic diagram is shown in FIG. 1; A partial structure schematic diagram is shown in FIG. 1;

[0031] A partial structure schematic diagram is shown in FIG. 1; Figure 12 A partial structure schematic diagram is shown in FIG. 1; A partial structure schematic diagram is shown in FIG. 1;

[0032] A partial structure schematic diagram is shown in FIG. 1; Figure 13 A partial structure schematic diagram is shown in FIG. 1; Figure 12 A partial structure schematic diagram is shown in FIG. 1; A partial structure schematic diagram is shown in FIG. 1;

[0033] In the figure: 01, door body; 02, handle slot; 03, door handle; 1, base; 101, upright column; 102, top frame; 103, inner cavity; 104, elongated opening; 11, power guide rail; 2, stand; 21, artificial head; 3, mechanical arm; 4, mounting seat; 41, driving motor; 42, frame seat; 421, telescopic hole; 5, arm frame; 501, jack; 51, high-speed camera; 52, bolt rod; 6, temperature simulation system; 61, auxiliary air guide pipe; 62, blowing head; 63, main air guide pipe; 64, water pipe; 65, spray head; 66, air outlet; 67, air inlet; 7, grabber; 71, main body; 711, grabbing opening; 712, piston hole A; 713, flow guide channel; 714, piston hole B; 715, sliding hole; 72, electric push cylinder; 73, piston body A; 74, clamping piece; 75, piston body B; 8, driving mechanism; 9, push rod; 91, push cylinder; 92, toothed roller; 93, rack A; 94, U-shaped arm; 941, threaded hole; 95, pressure head; 96, adjusting screw; 97, rack B; 98, return spring. DETAILED DESCRIPTION

[0034] The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0035] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connection", "installation" should be understood in a broad sense, for example, "connection" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium. In addition, "communication" can be direct communication, or can be indirect communication through intermediate medium. Among them, "fixing" means connecting with each other and the relative positional relationship after connection does not change. The orientation language mentioned in the embodiments of the present application, such as "inner", "outer", "top", "bottom", etc., is only the direction of the drawing, therefore, the orientation language used is to better, more clearly illustrate and understand the embodiments of the present application, and is not indicative or implied that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0036] Embodiment 1

[0037] Please refer to Figures 1-13This invention provides a door closing sound quality testing device with environmental simulation function, including a base 1, which is located in an anechoic chamber and has a clamp on the base 1 for positioning and fixing the vehicle body on the base 1. The clamp adopts existing technology, and its specific structure and usage method will not be described in detail and are not shown in the figure. A platform 2 is movably mounted on the side of the base 1 via a power guide rail 11. A six-axis robotic arm 3 is mounted on the platform 2, and a mounting seat 4 is mounted on the end of the robotic arm 3. The mounting seat 4 is equipped with a gripper 7, which grips the door handle 03 to simulate human hand operation. The robotic arm 3 provides power to simulate the actual opening and closing action. The robotic arm 3 adopts existing technology, and its specific structure and working principle will not be described in detail. The opening and closing action trajectory of the robotic arm 3 is programmed and preset according to the position of the vehicle body and the door.

[0038] During the specific testing process, the robotic arm 3 works according to a preset trajectory, driving the mounting base 4 and the gripper 7 to move to a gripping position close to the door handle 03. Then, the gripper 7 grasps the door handle 03, effectively simulating the action of manually grasping the door handle 03 to unlock and open the door. Next, the robotic arm 3 moves according to a preset door opening trajectory, and in conjunction with the gripping effect of the gripper 7, the door handle 03 can be opened to a predetermined angle. Subsequently, the gripper 7 is controlled to release the door handle 03, and the robotic arm 3 moves according to a preset door closing trajectory. Combined with the pushing effect of the gripper 7, the door handle 03 can be pushed to close, realizing the door opening and closing function of the present invention.

[0039] One side of the platform 2 is equipped with a boom 5 mounted on a bracket, and several high-speed cameras 51 are evenly distributed on the boom 5. The lenses of the high-speed cameras 51 are all aimed at the gap between the doors and the vehicle body. The high-speed cameras 51 can clearly capture the dynamic deformation of the vehicle body joint during the door closing process, realizing the effect of vehicle body deformation monitoring. In addition, the boom 5 is adapted to the deformation of the door gap on the vehicle body, such as... Figure 5 As shown, the boom 5 has several sockets 501 evenly distributed on it. Each high-speed camera 51 has a pin 52 fixed on its back. The pin 52 can be inserted into the socket 501. The detachable insertion of the pin 52 into the socket 501 allows for the removable installation of the boom 5, which facilitates the adjustment of the monitoring position of the high-speed camera 51 according to actual needs. On the other side of the platform 2, an artificial head 21 is installed through a bracket. The artificial head 21 is equipped with a sound data acquisition device that records the audio data of the door closing sound, so that technicians can analyze the acoustic indicators such as the loudness and sharpness of the door closing based on the processed data.

[0040] It is worth noting that when the robotic arm 3 performs the closing action, its movement does not follow the door handle 03 synchronously until the door handle 03 is closed. The robotic arm 3 moves according to a preset trajectory as the driving source for closing the door. When the door handle 03 is pushed to turn and close at a predetermined speed, the robotic arm 3 stops working, and the door relies on inertia to complete the remaining closing stroke. This avoids the noise generated by the continuous work of the robotic arm interfering with the sound quality test. In addition, by moving at a programmed preset speed, the robotic arm 3 can ensure that the door handle 03 closes at a predetermined speed, thereby effectively simulating different closing forces.

[0041] The power guide rail 11 adopts a linear drive structure such as a cylinder or hydraulic cylinder. The platform 2 is specifically installed on the moving end of the power guide rail 11. Through the operation of the power guide rail 11, the platform 2 and the components on the platform 2 can be driven to move along the length of the base 1, so as to switch the front and rear door test stations.

[0042] Each of the four corners above the base 1 is fixed with a vertically extending column 101. The top of the four columns 101 is fixed with a top frame 102. The top frame 102 is equipped with a temperature simulation system 6, which is used to generate a wind field and can control the ambient temperature of the test site to simulate test environments with different temperatures, so as to ensure that the test structure is more realistic and reliable.

[0043] Example 2

[0044] Please see Figure 2 This embodiment further explains the temperature simulation system 6 based on Embodiment 1, as follows:

[0045] The temperature simulation system 6 includes a secondary air duct 61, a blower head 62, and a main air duct 63. The main air duct 63 is fixed to one side of the top frame 102. Several secondary air ducts 61 are arranged at intervals along the length of the base 1 on the top frame 102, and all secondary air ducts 61 extend along the width of the base 1. The input end of each secondary air duct 61 is connected to the main air duct 63. Several downward-facing blower heads 62 are evenly distributed on the secondary air ducts 61. The input end of the main air duct 63 is connected to an external hot and cold air supply system (not shown in the figure) through a pipeline. The hot and cold air supply system adopts existing technology and can generate hot and cold air to meet the needs of the simulated ambient temperature. The specific structure and principle of the system will not be described in detail. In addition, the hot and cold air supply system is set outside the anechoic chamber to avoid acoustic pollution caused by working noise to the audio acquisition.

[0046] In addition, combined Figure 3The base 1 has an inner cavity 103. Several elongated openings 104, which communicate with the inner cavity 103, are arranged at intervals along the edge of the top surface of the base 1. The side of the base 1 has an exhaust port 66 that communicates with the inner cavity 103. The exhaust port 66 is connected to an external ventilation device (using existing technology, not shown in the figure) through a pipe. The ventilation device is used to draw air from the inside of the inner cavity 103 under negative pressure. The ventilation device is also located outside the anechoic chamber.

[0047] During the specific testing process, the hot or cold air supply system generates a hot or cold air flow, which is then transported through pipes to the main air pipe 63. From there, the main air pipe 63 distributes the airflow to each secondary air pipe 61, and finally, each nozzle 62 sprays the air downwards. Figure 3 As indicated by the arrow, the air inside the inner cavity 103 is drawn in by the exhaust device to achieve a negative pressure effect. The downward-flowing cold or hot air can be drawn into the inner cavity 103 through the elongated port 104. In this way, a surrounding wind field can be formed around the vehicle body. This wind field exchanges heat with the air around the vehicle body, effectively simulating a cold and hot environment.

[0048] In addition, the top frame 102 is a frame structure composed of four welded rods, and the auxiliary air pipes 61 are arranged at intervals, so that the test space above the base 1 is open, avoiding noise pollution from door-closing echoes that would occur in traditional closed temperature simulation spaces.

[0049] Specifically, a water pipe 64 extending along the length of the base 1 is also installed on the top frame 102. Several downward-facing spray nozzles 65 are evenly distributed on the water pipe 64. The input end of the water pipe 64 is connected to an external water supply device (using existing technology, not shown in the figure) through a pipe. The water supply device is used to pump water into the water pipe 64, and the water supply device is also located outside the anechoic chamber. The water in the water pipe 64 is finally sprayed downward in a mist form through the spray nozzles 65, which can effectively simulate the humidity of the test environment and further improve the authenticity of the test results.

[0050] It is worth noting that temperature and humidity sensors are installed at corresponding locations on the vehicle body and doors. These sensors collect temperature and humidity data in the test environment and feed the data back to the control system to monitor the temperature and humidity of the test environment. This also allows the control system to maintain the temperature and humidity of the test environment within a preset range based on the feedback information.

[0051] In addition, each elongated port 104 is equipped with an intercepting filter screen to intercept external dirt and impurities, preventing them from entering the inner cavity 103 and subsequent pipelines and causing blockage. At the same time, the side of the base 1 also has an air inlet 67 that communicates with the inner cavity 103. The air inlet 67 is connected to a high-pressure air supply system (using existing technology, not shown in the figure) through a pipeline. The high-pressure air supply system is located outside the anechoic chamber. Through its operation, air can be pumped into the inner cavity 103 and blown out from the elongated port 104, thereby backflushing and cleaning the intercepting filter screen.

[0052] Example 3

[0053] Please see Figure 6 , Figure 7 and Figure 8 This embodiment further explains the gripper 7 in Embodiment 1, as follows:

[0054] The gripper 7 includes a main body 71, an electric cylinder 72, a piston body A 73, a clamping member 74, and a piston body B 75. The main body 71 is mounted on the mounting base 4. The end of the main body 71 has a gripping opening 711 for accommodating a door handle 03. The main body 71 has a piston hole A 712 inside. Piston holes B 714 are symmetrically arranged on both sides of the gripping opening 711 inside the main body 71. The inner end walls of the two piston holes B 714 that are close to each other have sliding holes 715 that extend to the outside. The piston body A 73 is matched and installed in the piston hole A 712. The electric cylinder 72 is fixed on the main body 71, and its telescopic end extends through into the piston hole A 712 and is connected to the piston body A 73. A piston body B 75 is matched and installed in both piston holes B 714. A clamping member 74 is matched and slidably installed in both sliding holes 715, and both clamping members 74 extend into the piston holes B 714. Inside 714, and connected to the corresponding piston body B 75, the main body 71 is also provided with a pair of guide channels 713. One end of each guide channel 713 is connected to the piston hole A 712, and the other end is connected to the piston hole B 714 on the corresponding side. When the clamping member 74 extends, it can clamp and limit the door handle 03 in the gripping opening 711.

[0055] The piston bore A 712, the guide channel 713, and the piston bore B 714 form a pressure-guiding channel. Through the extension and retraction of the electric push cylinder 72, the piston body A73 can move synchronously within the piston bore A 712. Figure 9As shown, when the robotic arm 3 moves and drives the front side of the main body 71 to match into the handle groove 02 on the door body 01, the door handle 03 also matches into the gripping opening 711. Through the extension of the electric push cylinder 72, the piston body A 73 is pushed towards the gripping opening 711. The piston body A 73 then forces the gas inside the piston hole A 712 into the piston hole B 714 through the guide channel 713. With the continuous feeding and compression of the piston body A 73, the piston hole B... The increased internal pressure of 714 pushes the pistons B75 on both sides to move closer to each other, thereby pushing the two holding parts 74 to extend into the gripping opening 711. This can block and limit the door handle 03 within the gripping opening 711, forming a clamping force from both sides of the door handle 03, stably holding and limiting it within the gripping opening 711 to prevent it from falling off during the opening and closing process, thus achieving the gripping action. In conjunction with the robotic arm 3 moving according to the preset door opening trajectory, the door handle 03 can be pulled to unlock, and the door body 01 can be opened to the predetermined position, effectively simulating the door opening action.

[0056] When the door closes, the electric push cylinder 72 retracts, causing piston A 73 to retract and reset, creating a suction effect. This causes both pistons B 75 to retract synchronously, thereby causing the two retaining parts 74 to retract and reset synchronously, releasing them from the door handle 03. Then, the robotic arm 3 moves according to a preset closing trajectory, causing the main body 71 to move synchronously. By having the end of the main body 71 abut against the door handle 03 on the door body 01, the door handle 03 can be pushed to close. The sealing between piston hole A 712 and piston A 73, and between piston hole B 714 and piston B 75, ensures the preset suction effect.

[0057] Example 4

[0058] Since concealed door handles are becoming increasingly common in the market, the gripping structure provided in Example 3 is not suitable for concealed door handles. Therefore, please refer to [link / reference needed]. Figure 6 and Figure 10 The present invention makes the following design:

[0059] Specifically, a frame 42 is fixed to one end of the mounting base 4. A telescopic hole 421 is provided on the front side of the frame 42. A push rod 9 is slidably installed in the telescopic hole 421. A drive device for driving the push rod 9 to extend and retract is provided in the frame 42. The drive device is a push cylinder 91, which is fixed in the frame 42 and its telescopic end is fixedly connected to the end of the push rod 9 that extends into the frame 42. A drive mechanism 8 is provided on the mounting base 4. The main body 71 is movably mounted on the mounting base 4 through the drive mechanism 8. The drive mechanism 8 is a linear drive structure such as a lead screw, cylinder, hydraulic cylinder or electric push rod, which is used to drive the gripper 7 to move as a whole to adjust the distance between the gripper 7 and the push rod 9.

[0060] When grabbing a concealed door handle, such as Figure 11 As shown, firstly, based on the length of the door handle 03, the main body 71 is driven by the drive mechanism 8 to move to a suitable position. Then, the push cylinder 91 extends and pushes the push rod 9 to slide out from the telescopic hole 421. The extended push rod 9 can push one end of the door handle 03 inward. Under the lever principle mechanism of the door handle 03, the other end of the door handle 03 is pushed out to the outside of the handle groove 02 and enters the gripping opening 711. Subsequently, the gripper 7 can grip the door handle 03 to facilitate opening the door.

[0061] Furthermore, since the opening direction of the hidden door handles of different car models is different, the door handle 03 of some car models tilts forward, while the door handle 03 of some car models tilts backward. In order to ensure the universality of this device, this application fixes the drive motor 41 at the end of the robotic arm 3 and fixes the mounting base 4 on the end of the output shaft of the drive motor 41. With this design, the drive motor 41 works and its output shaft drives the mounting base 4 and the components on the mounting base 4 to rotate half a turn, so as to realize the reversal adjustment and reverse the direction of the push rod 9 and the gripper 7 to be suitable for hidden door handles with different tilting methods.

[0062] Example 5

[0063] Please see Figure 12 and Figure 13 The difference between this embodiment and embodiment 4 is that:

[0064] The drive device adopts a linkage mechanism, which includes a toothed roller 92, a rack A 93, a U-shaped arm 94, a pressure head 95, and a rack B 97. The toothed roller 92 is rotatably installed in the frame seat 42. The rack A 93 is fixed on the end of the push rod 9 located in the frame seat 42 and meshes with the toothed roller 92. The rack B 97 is limited and slidably installed in the frame seat 42 and is perpendicular to the rack A 93. A U-shaped arm 94 is fixed on one end of the rack B 97. The U-shaped arm 94 extends to the end of the mounting base 4 away from the frame seat 42. A pressure head 95 is installed on the end of the U-shaped arm 94 away from the frame seat 42. The pressure head 95 is in contact and squeezed with the side of the main body 71.

[0065] When opening the door by grabbing a non-concealed door handle, the drive mechanism 8 drives the main body 71 to move to a predetermined position. At this time, the pressure head 95 does not contact the side of the main body 71 and cannot trigger the linkage mechanism. When opening the door for a concealed door handle, the drive mechanism 8 drives the main body 71 to move away from the frame seat 42. The main body 71 will contact the pressure head 95. As the main body 71 continues to move, it will squeeze and push the pressure head 95 to move synchronously. Under the fixed connection of the U-shaped arm 94, it can drive the rack B 97 to move synchronously. The moving rack B 97 meshes with the drive roller 92 to rotate. The rotating roller 92 meshes with the drive rack A 93 to move synchronously. Then, the rack A 93 pushes the push rod 9 to slide out from the telescopic hole 421, so that the push rod 9 pushes the door handle 03 and makes one end of the door handle 03 tilt up.

[0066] By utilizing the linkage mechanism in conjunction with the translational movement of the main body 71, a mechanical linkage effect is achieved to drive the extension and retraction adjustment of the push rod 9. This eliminates the need for an additional linear drive structure, reducing drive costs. Furthermore, the linkage mechanism is only triggered when the gripper 7 moves to the desired gripping position, causing the push rod 9 to slide out. This ensures that the timing and position of the gripper 7's movement and the extension and retraction of the push rod 9 are effectively matched.

[0067] In addition, a return spring 98 is fixed at one end of rack A 93 away from push rod 9, and the other end of return spring 98 is fixed to mounting base 4. When push rod (9) extends, return spring 98 is stretched and stores force. After the main body 71 is translated and reset and separated from pressure head 95, the elastic reset capability of return spring 98 can drive push rod 9 to retract and reset.

[0068] In addition, a threaded hole 941 is provided on the end of the U-shaped arm 94 away from the frame 42. An adjusting screw 96 is installed in the threaded hole 941 with matching internal threads. The pressure head 95 is installed on the end of the adjusting screw 96. By turning the adjusting screw 96, the position of the pressure head 95 can be adjusted, thereby adjusting the point where the gripper 7 moves and squeezes the pressure head 95 to adapt to door handles 03 of different lengths.

[0069] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Therefore, the present invention will not explain the control method and circuit connection in detail.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A door closing sound quality testing device with environmental simulation function, comprising a base (1), a top frame (102) fixed above the base (1) by columns (101) arranged at its four corners, and a platform (2) movably mounted on the side of the base (1) by a power guide rail (11), characterized in that: A six-axis robotic arm (3) is installed on the platform (2). A mounting base (4) is installed on the end of the robotic arm (3). A gripper (7) is provided on the mounting base (4). The gripper (7) grips the door handle (03) to simulate human hand operation. The robotic arm (3) provides power to simulate the real opening and closing action of the door. The top frame (102) is equipped with a temperature simulation system (6) to generate a wind field to simulate the test environment temperature; The platform (2) has a boom (5) mounted on one side by a bracket and an artificial head (21) mounted on the other side by a bracket. Several high-speed cameras (51) are evenly distributed on the boom (5).

2. The door closing sound quality testing device with environmental simulation function according to claim 1, characterized in that: The temperature simulation system (6) includes a secondary air guide pipe (61), a nozzle (62), and a main air guide pipe (63). The main air pipe (63) is fixed on one side of the top frame (102), and a number of the auxiliary air pipes (61) are arranged at intervals on the top frame (102) along the length direction of the base (1), and the auxiliary air pipes (61) all extend along the width direction of the base (1). The input end of each of the auxiliary air tubes (61) is connected to the main air tube (63); The secondary air guide pipe (61) is evenly distributed with several downward-facing nozzles (62). The inlet of the main air pipe (63) is connected to an external hot and cold air supply system via a pipeline; The base (1) has an inner cavity (103), and the top surface of the base (1) has several elongated openings (104) that communicate with the inner cavity (103) at intervals along its edge. The base (1) has an air extraction port (66) on its side that communicates with the inner cavity (103), and the air extraction port (66) is connected to an external ventilation device through a pipe. Among them, the airflow ejected downward from the nozzle (62) is drawn into the inner cavity (103) through the elongated opening (104), which can form a surrounding wind field.

3. The door closing sound quality testing device with environmental simulation function according to claim 2, characterized in that: The top frame (102) is also equipped with a water pipe (64) extending along the length of the base (1), and a number of downward-facing spray nozzles (65) are evenly distributed on the water pipe (64). The water pipe (64) input end is connected to an external water supply device via a pipeline.

4. The door closing sound quality testing device with environmental simulation function according to claim 2, characterized in that: The gripper (7) includes a main body (71), an electric cylinder (72), a piston body A (73), a clamping component (74), and a piston body B (75). The main body (71) is mounted on the mounting base (4), and the end of the main body (71) has a gripping opening (711) for accommodating the door handle (03). The main body (71) is provided with a piston hole A (712), and the main body (71) is provided with piston holes B (714) symmetrically located on both sides of the gripping opening (711). The inner end walls of the two piston holes B (714) that are close to each other are provided with sliding holes (715) that pass through to the outside. The piston body A (73) is matched and installed in the piston hole A (712). The electric push cylinder (72) is fixed on the main body (71), and the telescopic end extends through into the piston hole A (712) and is connected to the piston body A (73). The piston body B (75) is installed in both piston holes B (714), and the retaining member (74) is slidably installed in both sliding holes (715). Both retaining members (74) extend into the piston holes B (714) and are connected to the corresponding piston body B (75). The main body (71) is also provided with a pair of flow channels (713), one end of each flow channel (713) is connected to piston hole A (712), and the other end is connected to piston hole B (714) on the corresponding side. When the retaining member (74) extends, it can retain and limit the door handle (03) within the gripping opening (711).

5. The door closing sound quality testing device with environmental simulation function according to claim 4, characterized in that: One end of the mounting base (4) is fixed with a frame base (42), and the front side of the frame base (42) is provided with a telescopic hole (421), and a push rod (9) is slidably installed in the telescopic hole (421). The frame base (42) is equipped with a driving device for driving the push rod (9) to extend and retract. The mounting base (4) is provided with a drive mechanism (8), and the main body (71) is movably mounted on the mounting base (4) through the drive mechanism (8).

6. The door closing sound quality testing device with environmental simulation function according to claim 5, characterized in that: The driving device is a push cylinder (91), which is fixed inside the frame (42), and the telescopic end is fixedly connected to the end of the push rod (9) extending into the frame (42).

7. The door closing sound quality testing device with environmental simulation function according to claim 1, characterized in that: The end of the robotic arm (3) is fixed with a drive motor (41), and the mounting base (4) is fixed on the end of the output shaft of the drive motor (41).

8. The door closing sound quality testing device with environmental simulation function according to claim 5, characterized in that: The drive unit uses a linkage mechanism, which includes a toothed roller (92), a rack A (93), a U-shaped arm (94), a pressure head (95), and a rack B (97). The toothed roller (92) is rotatably mounted inside the frame (42), and the rack A (93) is fixed on the end of the push rod (9) located inside the frame (42) and meshes with the toothed roller (92). The rack B (97) is slidably mounted in the frame (42) and is perpendicular to the rack A (93); A U-shaped arm (94) is fixed to one end of the rack B (97), and the U-shaped arm (94) extends to the end of the mounting base (4) away from the frame base (42); A pressure head (95) is installed on the end of the U-shaped arm (94) away from the frame (42), and the pressure head (95) is in contact and squeezed with the side of the main body (71). A return spring (98) is fixed at one end of the rack A (93) away from the push rod (9), and the other end of the return spring (98) is fixed to the mounting base (4).

9. The door closing sound quality testing device with environmental simulation function according to claim 8, characterized in that: The U-shaped arm (94) is provided with a threaded hole (941) on the end away from the frame (42), and an adjusting screw (96) is installed in the threaded hole (941) with matching threads. The pressure head (95) is installed on the end of the adjusting screw (96).

10. A door closing sound quality testing device with environmental simulation function according to claim 7, characterized in that: The boom (5) is adapted to fit the door gap on the vehicle body; The boom (5) is evenly distributed with several insertion holes (501); Each of the high-speed cameras (51) has a pin (52) fixed on its back, and the pin (52) can be inserted into the socket (501).

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