Endurance test bench for electric glass lifter of automobile door

Abstract

The utility model discloses an automobile door electric glass lifter endurance test bench comprising an automobile door installation rack used for installing an automobile door; the first position sensor is arranged at the highest rising point of the glass and used for detecting position information of the automobile door glass; the second position sensor is arranged at the lowest point of descending of the glass and is used for detecting position information of the vehicle door glass; the control system is electrically connected with the first position sensor, the second position sensor and a positive and negative rotation motor of the vehicle door electric glass lifter so as to control the positive and negative rotation motor to reverse according to the glass position information; the blowing system comprises a gas pressurizing device, a gas conveying pipeline, an electric control valve and a blowing nozzle, the electric control valve is arranged on the gas conveying pipeline to connect and disconnect the gas conveying pipeline, the blowing nozzle is arranged towards the positive and negative rotation motor, and the control system is connected with the electric control valve to control opening and closing of the electric control valve; the test bench can prevent the forward and reverse rotation motor from automatically suspending due to overheating.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile test, especially relates to a kind of automobile door electric glass lifter endurance test bench. BACKGROUND

[0002] According to relevant standard requirements, passenger car front door glass lifting test number is ≥20000 cycles, passenger car rear door glass lifting test number is ≥15000 cycles.Commercial vehicle front door glass lifting test number is ≥15000 cycles, commercial vehicle rear door glass lifting test number is ≥10000 cycles.At present, there is glass lifter's endurance test device on the market, it is to fix door on rack, with control element control electric glass lifter drives glass to lift to simulate the durability of glass lifter on real vehicle door.In order to make door glass lifting test reach the cycle number of relevant standard requirements, the motor of electric glass lifter is generally continuously operated, and when overheating, it will be suspended due to overheating protection, which affects test progress. UTILITY MODEL CONTENTS

[0003] Therefore, the utility model aims at providing a kind of automobile door electric glass lifter endurance test bench to solve the technical problem that the motor of electric glass lifter in the endurance test device of glass lifter is suspended due to overheating when testing, which affects test progress.

[0004] The utility model aims at realizing by the following technical scheme:

[0005] A kind of automobile door electric glass lifter endurance test bench, comprising:

[0006] Door mounting bracket, the door mounting bracket is used to install door;

[0007] First position sensor, the first position sensor is set on the highest point of door glass rising to detect the position information of door glass;

[0008] Second position sensor, the second position sensor is set on the lowest point of door glass descending to detect the position information of door glass;

[0009] Control system, control system is respectively electrically connected with first position sensor, second position sensor and the positive and negative rotation motor of door electric glass lifter to control positive and negative rotation motor commutation according to glass position information;

[0010] Blowing system, the blowing system includes gas pressurizing equipment, gas delivery pipeline, electric control valve and blowing nozzle, the electric control valve is set on gas delivery pipeline to open and close gas delivery pipeline, the blowing nozzle is set towards positive and negative rotation motor, the control system is connected with electric control valve to control electric control valve opening and closing.

[0011] Further, the air blowing system further comprises a temperature detection sensor arranged near the reversible motor for detecting the temperature of the reversible motor, and the control system is electrically connected with the temperature detection sensor for controlling the opening and closing of the air blowing system electric control valve according to the temperature information of the reversible motor.

[0012] Further, the door mounting frame comprises a support frame, a plurality of longitudinal beams and a front door side clamping piece, a rear door side clamping piece, a rear door end bottom clamping piece and a front door end bottom support piece, the support frame supports the plurality of longitudinal beams, the front door side clamping piece, the rear door side clamping piece and the rear door end bottom clamping piece are arranged on a longitudinal beam respectively, the front door end bottom support piece is a part of a longitudinal beam, the front door side clamping piece, the rear door side clamping piece and the rear door end bottom clamping piece are consistent in structure and each comprises two clamping bodies arranged on the longitudinal beam and movable or fixed relative to the longitudinal beam.

[0013] Further, the plurality of longitudinal beams are each a profile with a groove on the surface, the clamping body comprises a screw, a rubber sleeve is sleeved on the middle part of the screw, and nuts are threadedly connected to both ends of the screw respectively, one of the nuts being located in the groove of the profile.

[0014] Further, the front door side clamping piece is at least two groups.

[0015] Further, the two ends of the plurality of longitudinal beams respectively extend out of both sides of the support frame and form two groups of beam ends, the front door side clamping piece, the rear door side clamping piece, the rear door end bottom clamping piece and the front door end bottom support piece are two groups, and one group of the front door side clamping piece, the rear door side clamping piece, the rear door end bottom clamping piece and the front door end bottom support piece is arranged on each of the two groups of beam ends.

[0016] Further, the rear door end bottom clamping piece is provided with two cross beams towards the side of the door, and the two cross beams have an avoiding gap therebetween.

[0017] Further, the first position sensor, the second position sensor and the temperature detection sensor are respectively connected to a support rod, and the other end of the support rod is connected to the door mounting frame through a connecting piece.

[0018] Further, the one end of the gas conveying pipeline near the reversible motor is a bendable and shaped universal pipe, and the universal pipe is connected to the door mounting frame through a connecting piece.

[0019] Further, the door mounting frame is spliced from a plurality of profiles with grooves on the surfaces, the connecting piece comprises a fixing block, a through hole is arranged on the fixing block, a screw is arranged in the through hole, and nuts are threadedly connected to both ends of the screw respectively, one of the nuts being located in the groove of the profile.

[0020] The beneficial effects of this utility model are:

[0021] This utility model discloses a durability testing bench for an electric window regulator for automobile doors. In use, the door mounting bracket is installed with the door, connecting the first position sensor, the second position sensor, and the forward / reverse motor of the electric window regulator to the control system. The control system and the forward / reverse motor are started, and the electric window regulator, carrying the glass, moves. When it reaches the position of the first position sensor, the first position sensor transmits a signal to the control system, which then controls the forward / reverse motor to reverse direction. When the glass reaches the second position sensor, the control system controls the forward / reverse motor to reverse direction, thus completing one cycle. This process is repeated continuously. After a certain period, the control system opens the electrically controlled valve of the air blowing system, and the air nozzle blows air into the forward / reverse motor to accelerate heat dissipation, thereby preventing the motor from automatically stopping due to overheating and affecting the test progress.

[0022] By setting a temperature detection sensor to monitor the temperature of the forward and reverse motors in real time, when the temperature exceeds the set value, the control system controls the electronically controlled valve of the air blowing system to open, and the air nozzle blows air into the forward and reverse motors to accelerate the heat dissipation of the forward and reverse motors. When the temperature of the forward and reverse motors drops to the set value, the control system controls the electronically controlled valve to close, thereby saving energy.

[0023] The front door clamp, rear door clamp, rear bottom door clamp, and front bottom door support are used to install the door together.

[0024] The front door clamp, rear door clamp, rear door bottom clamp, and front door bottom support are two sets that can simultaneously conduct durability tests on the electric window regulators of both doors.

[0025] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] Figure 2 for Figure 1 Enlarged schematic diagram of section A in the middle.

[0029] Figure 3 This is a perspective view of the vehicle door mounting bracket of this utility model.

[0030] Figure 4 This is a diagram showing the state of the car door when the door mounting bracket of this utility model is installed.

[0031] Figure 5 This is a schematic diagram of the clamping body structure in this utility model.

[0032] Figure 6 This is a schematic diagram of the connecting component structure in this utility model.

[0033] Figure 7 This is a schematic diagram of the air blowing system in this utility model.

[0034] In the diagram: 1. Door; 2. Glass; 3. Electric window regulator; 4. Forward and reverse motor; 5. Door mounting bracket; 6. First position sensor; 7. Second position sensor; 8. Control system; 9. Gas pressurization equipment; 10. Gas delivery pipeline; 11. Air nozzle; 12. Temperature detection sensor; 13. Front door clamp; 14. Rear door clamp; 15. Rear door bottom clamp; 16. Front door bottom support; 17. Support frame; 18. Longitudinal beam; 20. Support rod; 21. Screw; 22. Rubber sleeve; 23. Nut; 24. Fixing block; 25. Crossbeam; 26. Universal tube; 27. Aluminum foil. Detailed Implementation

[0035] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0036] Example 1

[0037] To address the technical problem of the electric window regulator motor automatically shutting down due to overheating during the durability testing of automotive door electric window regulators, thus affecting the testing progress, the first embodiment of this utility model provides a durability testing bench for automotive door electric window regulators, such as... Figures 1 to 6As shown, the test bench includes a door mounting bracket 5, a first position sensor 6, a second position sensor 7, a control system 8, and an air blowing system. The door mounting bracket 5 is used to mount the door 1. The door 1 has a glass panel 2 and an electric window regulator 3. The electric window regulator 3 is connected to a forward / reverse motor 4, which drives the glass panel 2 to rise and fall. The first position sensor 6 is located at the highest point of the glass panel 2 to detect its position, i.e., whether the glass panel 2 has reached its highest point. The second position sensor 6 is located at the lowest point of the glass panel 2 to detect its position, i.e., whether the glass panel 2 has reached its lowest point. The control system 8 is electrically connected to the first position sensor 6, the second position sensor 7, and the forward / reverse motor 4 of the electric window lifter 3, respectively, to control the reversing of the forward / reverse motor 4 according to the position information of the glass 2. That is, when the first position sensor 6 detects that the glass 2 has risen to the highest position, the control system 8 controls the reversing motor 4 to reverse, and the reversing motor 4 drives the electric window lifter 3 to lower the glass 2. When the second position sensor 7 detects that the glass 2 has fallen to the lowest position, the control system controls the reversing motor 4 to reverse, and the reversing motor 4 drives the electric window lifter 3 to rise the glass 2. This continuous operation achieves the durability test of the electric window lifter 3. The air blowing system includes a gas pressurization device 9, a gas delivery pipeline 10, an electrically controlled valve, and an air blowing nozzle 11. The electrically controlled valve is installed on the gas delivery pipeline 10 to open and close the gas delivery pipeline 10. The air blowing nozzle 11 is set towards the forward / reverse motor 4. The control system 8 is electrically connected to the electrically controlled valve to control the opening and closing of the electrically controlled valve. When the forward and reverse motor 4 runs continuously for a certain period of time, the control system 8 controls the electric valve to open, and the air nozzle 11 blows air into the forward and reverse motor. After blowing air for a period of time, the control system 8 controls the electric valve to close.

[0038] To reduce energy consumption and improve the heat dissipation of the reversible motor 4, the air blowing system also includes a temperature detection sensor 12. The temperature detection sensor 12 is located near the reversible motor 4 to detect the temperature of the reversible motor 4. The control system 8 is electrically connected to the temperature detection sensor 12 to control the opening and closing of the air blowing system's electronically controlled valve based on the temperature information of the reversible motor 4. That is, when the temperature detection sensor 12 detects that the temperature of the reversible motor 4 exceeds the set value, the control system 8 controls the electronically controlled valve to open, and the air blowing nozzle 11 blows air into the reversible motor 4 to cool it down. When the temperature of the reversible motor 4 drops to the set value, the control system 8 controls the electronically controlled valve to close.

[0039] like Figure 2 and 3As shown, the door mounting bracket includes a support frame 17, multiple longitudinal beams 18, a front door clamping member 13, a rear door clamping member 14, a rear door bottom clamping member 15, and a front door bottom support member 16. The support frame 17 supports multiple longitudinal beams 18. The front door clamping member 13, the rear door clamping member 14, and the rear door bottom clamping member 15 are each mounted on a longitudinal beam 18. The front door bottom support member 16 is a section of a longitudinal beam 18. The front door clamping member 13, the rear door clamping member 14, and the rear door bottom clamping member 15 have the same structure, each including two clamping bodies. The two clamping bodies are respectively mounted on the longitudinal beams 18 and can move or be fixed relative to the longitudinal beams 18. When installing the door 1, the door mounting bracket 5 moves the clamping bodies so that the two clamping bodies are relatively far apart. After the door 1 is placed, the clamping bodies are moved to clamp the door 1 and then fixedly connected to the longitudinal beams 18.

[0040] Multiple longitudinal beams 18 are all grooved profiles, such as... Figure 5 As shown, the clamping body includes a screw 21, a rubber sleeve 22 is sleeved in the middle of the screw 21, and nuts 23 are threaded to both ends. One of the nuts 23 is located in the groove of the profile. The rubber sleeve 22 can protect the car door from scratches. Loosening the nut 23 can move the clamping body left and right. After moving into place, tightening the nut 23 can lock the clamping body on the longitudinal beam 18.

[0041] The front clamping parts 13 of the car door are at least two sets, with multiple clamping points, which makes the installation effect of the car door 1 better.

[0042] Multiple longitudinal beams 18 extend from both ends of the support frame 17 to form two sets of beam ends. The front door clamp 13, the rear door clamp 14, the rear door bottom clamp 15, and the front door bottom support 16 are two sets. Each of the two sets of beam ends is equipped with a set of front door clamp 13, rear door clamp 14, rear door bottom clamp 15, and front door bottom support 16. This structure facilitates the simultaneous durability testing of the electric window regulators of the two doors.

[0043] The bottom clamping member 16 at the rear end of the door has two crossbeams 25 facing the door side. There is a clearance between the two crossbeams 25, and the two crossbeams 25 can also limit the door.

[0044] The first position sensor 6, the second position sensor 7, and the temperature detection sensor 12 are each connected to a support rod 20. The other end of the support rod 20 is connected to the door mounting bracket via a connector. The end of the gas delivery pipeline 10 near the forward and reverse motor 4 is a flexible and shape-adjustable universal tube 26. The universal tube 26 is connected to the door mounting bracket 5 via a connector, making the test bench structure more compact.

[0045] The door mounting bracket 5 is composed of multiple grooved profiles joined together, such as...Figure 6 As shown, the connector includes a fixing block 24 with a through hole and a screw 21 inside the through hole. Nuts 23 are threaded to both ends of the screw 2123. One of the nuts 23 is located in the groove of the profile. Loosening the nut 23 allows the first position sensor 6, the second position sensor 7, or the temperature sensor 12 on the connector to move on the profile. Tightening the nut 23 can fix the connector.

[0046] Example 2

[0047] like Figures 1 to 6 As shown, a durability testing bench for an electric window regulator in an automobile door includes a door mounting bracket 5, on which a door 1 is mounted. The door 1 has a glass 2 and an electric window regulator 3. The electric window regulator 3 is connected to a forward / reverse motor 4, which drives the electric window regulator 3 to move the glass 2 up and down. Figure 2 and 3 As shown, the door mounting bracket 5 includes a support frame 17, five longitudinal beams 18, a front door clamp 13, a rear door clamp 14, a rear door bottom clamp 15, and a front door bottom support 16. The support frame 17 includes a planar frame and a three-dimensional frame. The bottom surface of the planar frame is equipped with movable rollers. The three-dimensional frame is located in the middle of the planar frame in the front-rear direction, and its left and right sides are aligned with those of the planar frame. The three-dimensional frame has two longitudinal beams 18 in the middle and two longitudinal beams 18 at the bottom. A longitudinal beam 18 is located on the right side inside the planar frame. All five longitudinal beams 18 are arranged in the front-rear direction, and both ends of each longitudinal beam 18 form two sets of beam ends outside the three-dimensional frame. The front door clamping member 13, the rear door clamping member 14, the rear door bottom clamping member 15, and the front door bottom support member 16 are arranged in two sets. Two sets of front door clamping members 13, rear door clamping members 14, rear door bottom clamping members 15, and front door bottom support members 16 are respectively installed at the ends of the two sets of beams. Each set contains two front door clamping members 13. The two front door clamping members 13, rear door clamping members 14, and rear door bottom clamping members 15 in each set are respectively installed on four longitudinal beams 18 of the three-dimensional frame. Specifically, the two front door clamping members 13 are installed on the two right longitudinal beams 18 of the three-dimensional frame, the rear door clamping members 14 are installed on the upper left longitudinal beam 18 of the three-dimensional frame, the rear door bottom clamping member 15 is installed on the lower left longitudinal beam 18 of the three-dimensional frame, and the front door bottom support member 16 is a segment of the longitudinal beam 18 within the three-dimensional frame. The support frame 17 is assembled from multiple 2020 series profiles, and the five longitudinal beams 18 are also made of 2020 series profiles. The front door clamp 13, rear door clamp 14, and rear bottom door clamp 15 have identical structures, each including two clamping bodies, such as... Figure 5As shown, the clamping body includes a screw 21, with a rubber sleeve 24 fitted in the middle of the screw 21 and nuts 23 threaded to both ends. One nut 23 is located in a groove of the 2020 series profile. Tightening the nut 23 fixes the clamping body to the profile. Loosening the nut 23 allows the clamping body to move along the length of the profile. The front clamping member 13 and the rear clamping member 14 of the door are horizontally arranged, while the rear bottom clamping member 15 of the door is vertically arranged. The front clamping member 13, the rear clamping member 14, the rear bottom clamping member 15, and the front bottom support member 16 of the door work together to install the door 1, as shown. Figure 4 As shown, after the car door 1 is installed, the front side of the car door 1 faces right, the rear side faces left, the top side faces up, and the bottom side faces down. When installing the car door 1, the door mounting bracket 5 keeps the two clamping bodies of the front clamping member 13, the rear clamping member 14, and the bottom clamping member 15 at the rear end of the car door away from each other. After placing the car door 1, the two clamping bodies are brought together to clamp the car door.

[0048] The test bench in this embodiment also includes a first position sensor 6 and a second position sensor 7. The first position sensor 6 is located at the highest point of the glass 2 of the door 1 when it rises, and the second position sensor 7 is located at the lowest point of the glass 2 when it falls. Aluminum foil 27 is attached to the top of the glass 2. Both the first position sensor 6 and the second position sensor 7 are infrared sensors. The infrared light emitted by the infrared sensors is reflected by the aluminum foil 27, at which point the infrared sensors emit glass position information. That is, when the glass 2 rises to the first position sensor 6, the first position sensor 6 will detect the glass position information of the glass 2 reaching its highest point; when the glass 2 falls to the second position sensor 7, the second position sensor 7 will detect the glass position information of the glass 2 reaching its lowest point. The first position sensor 6 and the second position sensor 7 are respectively connected to the profile of the support frame 17 or the longitudinal beam 18 via support rods 20. The support rods 20 have connectors at one end of the profile, such as... Figure 6 As shown, the connector includes a fixing block 24 with a through hole and a screw 21 inside the through hole. Nuts 23 are threaded to both ends of the screw 21, with one nut 23 located in the groove of the profile. Tightening the nut 23 fixes the support rod 20 to the profile, and loosening the nut 23 allows the support rod 20 to move along the length of the profile.

[0049] The test bench in this embodiment also includes a control system 8, which is a general controller. The control system 8 is located in the control cabinet and is electrically connected to the first position sensor 6, the second position sensor 7, and the forward and reverse motor 4 of the electric window lifter 3. When the first position sensor 6 detects that the glass 2 has reached the highest point, the control system controls the forward and reverse motor 4 to reverse direction, and the forward and reverse motor 4 drives the electric window lifter 3 to descend with the glass 2. When the second position sensor 7 detects that the glass 2 has reached the lowest point, the control system controls the forward and reverse motor 4 to reverse direction, and the forward and reverse motor 7 drives the electric window lifter 3 to rise with the glass 2. This process is repeated continuously to perform a durability test on the electric window lifter 3.

[0050] The control cabinet is connected to a 220V power supply. The power supply is connected to the input terminal of an adjustable voltage power supply module via a cable. The output terminal of the power supply module is connected to a connector via a cable, located on the surface of the control cabinet. The forward and reverse motors obtain power through a power cable connected to the connector. Alternatively, the power supply cable for the forward and reverse motors can be directly connected to the output terminal of the power supply module. The power supply module voltage is adjustable to 12V and 24V; 12V is used for light trucks and passenger vehicles, and 24V is used for heavy trucks.

[0051] The control system is configured to run a set number of tests. It automatically stops after the set number of tests is reached. Data is saved if power is lost during the test, and the count resumes automatically from the point of last stop upon power restoration. An Excel raw data record table and temperature curve are automatically generated.

[0052] In addition to general controllers, the control system can also be a control system based on existing technology, including an industrial computer, forward and reverse solid-state relays, and an AC / DC power supply module. The industrial computer contains a motion control card, and the first position sensor 6 and the second position sensor 7 are connected to the motion control card. The industrial computer drives the motion control card to send control commands to the forward and reverse solid-state relays according to the set parameters. The forward and reverse solid-state relays control the power supply to drive the forward and reverse motors of the electric window lifter to move the glass up and down. The AC / DC power supply module supplies power to the forward and reverse solid-state relays.

[0053] The test bench in this embodiment also includes an air blowing system, such as Figure 7As shown, the air blowing system includes a gas pressurizing device 9, a gas delivery pipeline 10, a slide valve, a dual unit, a pressure switch, an electrically controlled valve, and an air blowing nozzle 11. The gas pressurizing device 9 is an air compressor. The gas delivery pipeline 10 includes a main pipe connecting to the gas pressurizing device 9. The end of the main pipe is connected to two branch pipes via a tee connector. The two branch pipes are respectively connected to the control cabinet and can be connected to an air inlet pipe via a quick connector. The end of the air inlet pipe is connected to a flexible universal tube 26, and the end of the universal tube 26 is connected to the air blowing nozzle 11. The air blowing nozzle 11 is positioned facing the forward and reverse motor 4. The dual unit includes a pressure reducing valve and a filter. The slide valve, pressure reducing valve, filter, and pressure switch are sequentially arranged on the main pipe along the gas delivery direction of the gas delivery pipeline 10. Electrically controlled valves are respectively installed on the two branch pipes to control the gas delivery. The universal tube 26 has a connector at one end near the profile of the support frame 17 or the longitudinal beam 18, such as... Figure 6 As shown, the connector includes a fixing block 24 with a through hole. A screw 21 is installed in the through hole, and nuts 23 are threaded to both ends of the screw 21. One nut 23 is located in a groove in the profile. Tightening the nut 23 fixes the universal tube 26 to the profile, and loosening the nut 23 allows the universal tube 26 to move along the length of the profile. The control system 8 is connected to the electrically controlled valve to control its opening and closing. The air blowing system also includes a temperature detection sensor 12, which is located near the reversible motor 4 to detect its temperature. The temperature detection sensor 12 is electrically connected to the control system 8. When the temperature detection sensor 12 detects that the temperature of the reversible motor 4 exceeds a set value, the control system 8 controls the electrically controlled valve to open and the electrically controlled pressurizing device 9 to start blowing air onto the surface of the reversible motor 4 to cool it down. When the temperature drops to the set value, the control system 8 controls the electrically controlled valve to close, reducing energy consumption. A vortex tube can also be added to the gas delivery pipeline 10 to reduce the blowing temperature of the air nozzle, thereby improving the cooling effect of the forward and reverse motor 4.

[0054] During the test, both entire car doors were mounted on the door mounting bracket to fully verify the quality of components such as the power window regulator, glass, door trim, sill strip, and tinted window film. Specifically, the power window regulator was required to function normally after the test, with no abnormal noise, no jamming, no wear on the guide rails, normal motor operation, and no melting of the wiring harness. The glass was required to show no wear, interference, scratches, or abnormal noise with the door edges and sheet metal after the test. The door trim was required to show no edge curling, no detachment, no whitening, and no pushing out after the test. The sill strip was required to show no wear, edge curling, no detachment, and no abnormal noise with the glass after the test. The tinted window film was required to show no air bubbles after the test.

[0055] The door mounting bracket 5 and other components fixed to it, such as the first position sensor 6, the second position sensor 7, the temperature sensor 12, and the universal joint, can be placed in the environmental chamber to conduct environmental simulation tests under different climatic conditions, such as room temperature, 80℃, 60℃, 10℃, and -30℃. In this case, the control cabinet and gas pressurization equipment are placed outside the environmental chamber. Alternatively, the wheels on the door mounting bracket can be removed and installed on a vibration table. Durability tests of the electric window regulator 3 under vibration conditions can be conducted by inputting fixed-frequency, swept-frequency vibration parameters or road surface parameters to the vibration table, thereby better evaluating the design and manufacturing quality of the electric window regulator and its accessories.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A durability testing bench for electric window regulators in automobile doors, characterized in that, include: Door mounting bracket (5), the door mounting bracket (5) is used to install door (1); The first position sensor (6) is set at the highest point of the door glass (2) to detect the position information of the door glass (2); The second position sensor (7) is set at the lowest point of the door glass (2) when it is lowered to detect the position information of the door glass (2); The control system (8) is electrically connected to the first position sensor (6), the second position sensor (7) and the forward and reverse motor (4) of the electric window regulator (3) of the car door respectively to control the forward and reverse motor (4) to switch directions according to the position information of the glass (2); The blowing system includes a gas pressurizing device (9), a gas delivery pipeline (10), an electrically controlled valve, and a blowing nozzle (11). The electrically controlled valve is installed on the gas delivery pipeline (10) to open and close the gas delivery pipeline (10). The blowing nozzle (11) is positioned facing the forward and reverse motor (4). The control system (8) is connected to the electrically controlled valve to control the opening and closing of the electrically controlled valve.

2. The durability testing bench for automotive door electric window regulators according to claim 1, characterized in that, The air blowing system also includes a temperature detection sensor (12), which is located near the forward and reverse motor (4) to detect the temperature of the forward and reverse motor (4). The control system (8) is electrically connected to the temperature detection sensor (12) to control the opening and closing of the air blowing system's electrical control valves based on the temperature information of the forward and reverse motor (4).

3. The durability testing bench for automotive door electric window regulators according to claim 2, characterized in that, The door mounting bracket (5) includes a support frame (17), multiple longitudinal beams (18), a front door clamp (13), a rear door clamp (14), a rear door bottom clamp (15), and a front door bottom support (16). The support frame (17) supports multiple longitudinal beams (18). The front door clamp (13), the rear door clamp (14), and the rear door bottom clamp (15) are respectively mounted on a longitudinal beam (18). The front door bottom support (16) is a section of a longitudinal beam (18). The front door clamp (13), the rear door clamp (14), and the rear door bottom clamp (15) have the same structure, each including two clamping bodies. The two clamping bodies are respectively mounted on the longitudinal beams (18) and can move or be fixed relative to the longitudinal beams (18).

4. The durability testing bench for automotive door electric window regulators according to claim 3, characterized in that, The longitudinal beams (18) are all profiles with grooves on the surface. The clamping body includes a screw (21). A rubber sleeve (22) is sleeved in the middle of the screw (21), and nuts (23) are threaded to both ends. One of the nuts (23) is located in the groove of the profile.

5. The durability testing bench for automotive door electric window regulators according to claim 3, characterized in that, The front door clamp (13) consists of at least two sets.

6. The durability testing bench for automotive door electric window regulators according to claim 3, characterized in that, The two ends of the multiple longitudinal beams (18) extend out of the two sides of the support frame (17) and form two sets of beam ends. The front door clamp (13), the rear door clamp (14), the rear door bottom clamp (15), and the front door bottom support (16) are two sets. The two sets of beam ends are respectively provided with a set of front door clamp (13), rear door clamp (14), rear door bottom clamp (15), and front door bottom support (16).

7. The durability testing bench for automotive door electric window regulators according to claim 6, characterized in that, The bottom clamping member (15) at the rear end of the door has two crossbeams (25) facing the door side, and there is a clearance between the two crossbeams (25).

8. The durability testing bench for automotive door electric window regulators according to claim 3, characterized in that, The first position sensor (6), the second position sensor (7) and the temperature detection sensor (12) are respectively connected to a support rod (20), and the other end of the support rod (20) is connected to the door mounting bracket through a connector.

9. The durability testing bench for automotive door electric window regulators according to claim 3, characterized in that, The gas delivery pipeline (10) has a flexible and shapeable universal tube (26) at one end near the forward and reverse motor (4), and the universal tube (26) is connected to the door mounting bracket (5) by a connector.

10. The durability testing bench for automotive door electric window regulators according to claim 8 or 9, characterized in that, The door mounting bracket is made up of at least a number of profiles with grooved surfaces. The connector includes a fixing block (24), which has a through hole. A screw (21) is provided in the through hole. Nuts (23) are threaded to both ends of the screw (21), and one of the nuts (23) is located in the groove of the profile.

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