Windshield wiper motor loading test bench

Abstract

The utility model relates to a kind of windscreen wiper motor loading test bench, including upper cabinet, lower cabinet, spraying module, test control module and mechanical transmission module;Windshield is installed in the upper cabinet for testing, windscreen wiper one end contacts windshield for testing, and the other end is connected test motor by mechanical transmission module;Spraying module includes the water tank and the spraying pipe connected with each other, water tank is installed in lower cabinet, and spraying pipe is located above windshield for testing;Test control module includes push-pull force meter, torque sensor and angle encoder, push-pull force meter is installed on windscreen wiper, torque sensor and angle encoder are installed on test motor.Compared with prior art, the utility model has push-pull force meter real-time detection force that windscreen wiper is applied on windshield for testing, torque, rotating speed and swing information of test motor are recorded by torque sensor and angle encoder, and the advantages such as the determination of the loading force required for the drive motor of different windscreen wiper are realized.

Description

Technical Field

[0001] This utility model relates to the testing of transportation vehicle components, and in particular to a windshield wiper motor loading test bench. Background Technology

[0002] Windshield wipers in aviation, automobiles, and high-speed trains are devices used during vehicle operation to prevent obstruction of vision and impaired visibility caused by weather conditions, ensuring clear visibility for the driver. Windshield wipers are crucial and indispensable for ensuring the safe operation of transportation vehicles. Different types of windshield wipers require different motor loads; therefore, setting a load force that meets actual needs is of great importance for windshield wiper systems.

[0003] A search revealed that application publication number CN110987386A discloses a performance testing device and method for windshield wiper systems. Specifically, the device includes: a mounting bracket configured to securely mount the windshield and wiper system, allowing the wiper blades to reciprocate against the outer surface of the windshield; a rain simulation device with a nozzle configured to spray water towards the windshield; and multiple light sensors arranged on the inner surface of the windshield to detect changes in light intensity and transmittance. When the rain simulation device is activated and the wiper blades sweep across the outer surface of the windshield, the light sensors detect changes in the amount of light transmitted through the windshield. However, this prior art primarily focuses on testing and verifying the wiping speed and wiping angle performance of the windshield wiper system.

[0004] In summary, the technical problem that needs to be solved is how to design a test bench to test the motor loading force required for different windshield wipers. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology, which cannot test the required motor loading force, and to provide a windshield wiper motor loading test bench.

[0006] The objective of this utility model can be achieved through the following technical solutions.

[0007] According to one aspect of this utility model, a windshield wiper motor loading test bench is provided, comprising an upper cabinet, a lower cabinet, a spray module, a test control module, and a mechanical transmission module. The upper cabinet is mounted on the lower cabinet. A test windshield is installed inside the upper cabinet, with one end of the windshield wiper contacting the test windshield and the other end connected to a test motor via the mechanical transmission module. The spray module includes a water tank and spray pipes connected to each other. The water tank is installed inside the lower cabinet, and the spray pipes are installed inside the upper cabinet and located above the test windshield. The test control module includes a push-pull force gauge, a torque sensor, and an angle encoder. The push-pull force gauge is mounted on the windshield wiper, and the torque sensor and angle encoder are mounted on the test motor.

[0008] As a preferred technical solution, the windshield wiper includes a wiper arm and a wiper blade. The wiper arm is connected to a mechanical transmission module via an adjusting nut. The push-pull force gauge is installed between the wiper arm and the wiper blade, and the push-pull force gauge is perpendicular to the windshield used for testing.

[0009] As a preferred technical solution, the test control module further includes a power supply, a motor control test box, and a display. The motor control test box is connected to a push-pull force gauge, a torque sensor, an angle encoder, a power supply, a display, and a test motor.

[0010] As a preferred technical solution, the mechanical transmission module includes a transmission shaft, a coupling, a motor support base, and a torque sensor support base. A test motor is installed on the motor support base, and a torque sensor is installed on the torque sensor support base. The output shaft of the test motor is connected to the torque sensor through a coupling, and the output shaft of the torque sensor is connected to one end of the transmission shaft through a coupling. The other end of the transmission shaft is connected to the windshield wiper, and the angle encoder is installed on the transmission shaft.

[0011] As a preferred technical solution, the upper cabinet is installed on a portion of its surface away from the ground, while the motor support and torque sensor support are installed on the other portion.

[0012] As a preferred technical solution, the spray module further includes a drainage trough, which is installed at the bottom of the upper cabinet and connected to a water tank via a drain pipe; the water tank contains a built-in water pump.

[0013] As a preferred technical solution, the water tank and the spray pipe are connected by a water pipe, and a valve is installed on the water pipe.

[0014] As a preferred technical solution, the upper cabinet is provided with a triangular bracket, and one side of the triangular bracket is provided with an L-shaped corner bracket, on which the test windshield is installed.

[0015] As a preferred technical solution, an upper cabinet door is provided on the upper cabinet body, and the side panel is a transparent side panel.

[0016] As a preferred technical solution, a lower cabinet door is provided on the lower cabinet body, and brake casters are provided on the surface near the ground.

[0017] Compared with the prior art, the present invention has the following beneficial effects.

[0018] 1) This invention uses a push-pull force gauge to detect the force applied by the windshield wipers to the test windshield in real time. After adjusting the windshield wipers and ensuring the force applied to the test windshield meets the specifications, a torque sensor and an angle encoder record the torque, speed, and oscillation information of the test motor, thus determining the required loading force for the drive motors of different windshield wipers. A spray module simulates the actual environment, making the test results more realistic.

[0019] 2) The wiper arm of this utility model is connected to the mechanical transmission module through an adjusting nut. The force applied by the wiper arm to the test windshield can be increased or decreased by adjusting the tightness of the adjusting nut, which is convenient to operate. The push-pull force gauge is perpendicular to the test windshield to ensure the accuracy of force measurement.

[0020] 3) This utility model uses a motor control test box to regulate the motor and test the data of the motor reaching the set loading force in different modes; the measured data is displayed on the display, which facilitates the observation and recording of the data.

[0021] 4) The simulated rainwater of the spray module of this utility model can be recycled through the drainage channel, achieving good circulation and low maintenance difficulty; the spray intensity of the simulated rainwater in the spray pipe can be adjusted by the water pump, and the valve can be installed to conveniently control the opening and closing of the spray module.

[0022] 5) The windshield glass for testing in this utility model is installed on the L-shaped corner bracket of the triangular bracket, which is stable; the upper cabinet has a cabinet door to facilitate the installation of internal components, and the side panel is transparent to facilitate observation of the internal windshield wipers; the lower cabinet has a cabinet door to facilitate the installation of the water tank, and the brake casters allow the test platform to be easily moved and parked. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a windshield wiper motor loading test bench with the test control module removed, according to this utility model.

[0024] Figure 2 This is a side view of a windshield wiper motor loading test bench according to the present invention.

[0025] Figure 3 This is a top view of a windshield wiper motor loading test bench according to the present invention.

[0026] Figure 4 This is a schematic diagram of the upper and lower cabinet structures of this utility model.

[0027] Figure 5 This is a schematic diagram of the spray module structure of this utility model.

[0028] The numbers in the diagram are as follows: 1. Upper cabinet; 10. Test windshield; 11. Triangular bracket; 12. L-shaped corner bracket; 13. Upper cabinet door; 2. Lower cabinet; 20. Lower cabinet door; 21. Brake caster; 30. Water tank; 31. Drainage trough; 32. Drainage pipe; 33. Water pump; 34. Water pipe; 40. Torque sensor; 41. Angle encoder; 42. Display; 50. Drive shaft; 51. Motor support; 52. Torque sensor support; 60. Wiper arm; 61. Wiper blade; 7. Test motor. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present utility model.

[0030] This utility model provides a windshield wiper motor loading test bench, comprising an upper cabinet 1, a lower cabinet 2, a spray module, a test control module, and a mechanical transmission module. The windshield wiper includes a wiper arm 60 and a wiper blade, which are connected to the wiper arm 60. The wiper blade contacts the windshield glass 10 used for testing.

[0031] The upper cabinet 1 is installed on the lower cabinet 2. One side of the upper cabinet 1 has an upper cabinet door 13. The upper cabinet door 13 and the other three sides are made of tempered glass. The frame and top plate of the upper cabinet 1 are made of steel plate. The upper cabinet 1 has a triangular bracket 11 inside. One side of the triangular bracket 11 is perpendicular to the ground and is connected to an L-shaped corner bracket 12. The test windshield glass 10 is installed on the L-shaped corner bracket 12 by upper and lower fasteners.

[0032] The upper cabinet 1 is mounted on a portion of the upper surface of the lower cabinet 2, while the motor support 51 and torque sensor support 52 are mounted on the other portion. Lower cabinet doors 20 are opened on two opposite sides of the lower cabinet 2. The lower cabinet 2 is constructed entirely of stainless steel and Q235 steel plates. Braked casters 21 are fitted to the bottom of the lower cabinet 2.

[0033] The spray module includes a water tank 30, a spray pipe, and a drainage trough 31. The water tank 30 is installed inside the lower cabinet 2, and the spray pipe is installed inside the upper cabinet 1, located above the test windshield 10. The water tank 30 and the spray pipe are connected by a water pipe 34, on which a valve is installed. The drainage trough 31 is installed at the bottom of the upper cabinet 1 and connected to the water tank 30 via a drainage pipe 32. The water tank 30 contains a built-in water pump 33. This can simulate the real working conditions of windshield wipers.

[0034] The spray module is supplied with water from the water tank 30. The water is then pumped by the water pump 33 to the spray pipe to spray the test glass plate and the wiper assembly. The spray intensity can be adjusted by controlling the speed of the motor of the water pump 33. The sprayed water flows through the test windshield 10 and can be drained back to the water tank 30 through the water collection tank.

[0035] The test control module includes a push-pull force gauge, a torque sensor 40, an angle encoder 41, a power supply, a motor control test box, and a display 42. The push-pull force gauge is installed between the wiper arm 60 and the wiper blade, perpendicular to the test windshield 10. The motor control test box connects the push-pull force gauge, torque sensor 40, angle encoder 41, power supply, display 42, and test motor 7. The display 42 is installed on the upper surface of the lower cabinet 2 for easy observation. The motor control test box controls the motor to enter LOW SPEED, HIGHSPEED, NTERMITTENT, PARK, and other modes for corresponding tests. Simultaneously, the torque sensor 40 and angle encoder 41 convert the torque, speed, and swing angle of the motor into electrical signals, which are displayed on the display 42 for direct recording of relevant test data.

[0036] The mechanical transmission module includes a drive shaft 50, a coupling, a motor support 51, and a torque sensor support 52. The motor support 51 is located near the upper edge of the lower cabinet 2, and the torque sensor support 52 is located near the upper cabinet 1. The test motor 7 is mounted on the motor support 51, and the torque sensor 40 is mounted on the torque sensor support 52. The output shaft of the test motor 7 is connected to the torque sensor 40 via a coupling, and the output shaft of the torque sensor 40 is connected to one end of the drive shaft 50 via a coupling. The other end of the drive shaft 50 is connected to the wiper arm 60 via an adjusting nut. The angle encoder 41 is mounted on the drive shaft 50.

[0037] The torque sensor 40 and angle encoder 41 are connected via a drive shaft 50 and a coupling, and finally a push-pull force gauge is connected. The wiper blade is fixed to one side of the test windshield 10. The push-pull force gauge is slowly pulled until the force applied by the wiper blade to the test windshield 10 reaches the set value. If the requirement is not met, the force applied by the wiper arm 60 to the glass plate can be increased or decreased by adjusting the tightness of the adjusting nut, ultimately achieving the test loading force required by the accessory maintenance manual. According to the accessory maintenance manual, the loading force must be greater than 6.5 lbs and less than 7.5 lbs.

[0038] This invention has good operability, maintainability, safety and economy, and can work continuously and stably.

[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A windshield wiper motor loading test bench, characterized in that, The test module includes an upper cabinet (1), a lower cabinet (2), a spray module, a test control module, and a mechanical transmission module. The upper cabinet (1) is installed on the lower cabinet (2). A test windshield (10) is installed inside the upper cabinet (1). One end of the windshield wiper contacts the test windshield (10), and the other end is connected to the test motor (7) through the mechanical transmission module. The spray module includes a water tank (30) and a spray pipe connected to each other. The water tank (30) is installed inside the lower cabinet (2), and the spray pipe is installed inside the upper cabinet (1) and located above the test windshield (10). The test control module includes a push-pull force gauge, a torque sensor (40), and an angle encoder (41). The push-pull force gauge is installed on the windshield wiper, and the torque sensor (40) and the angle encoder (41) are installed on the test motor (7).

2. The windshield wiper motor loading test bench according to claim 1, characterized in that, The windshield wiper includes a wiper arm (60) and a wiper blade. The wiper arm (60) is connected to a mechanical transmission module via an adjusting nut. The push-pull force gauge is installed between the wiper arm (60) and the wiper blade, and the push-pull force gauge is perpendicular to the windshield (10) used for testing.

3. The windshield wiper motor loading test bench according to claim 1, characterized in that, The test control module also includes a power supply, a motor control test box and a display (42). The motor control test box is connected to a push-pull force gauge, a torque sensor (40), an angle encoder (41), a power supply, a display (42) and a test motor (7).

4. The windshield wiper motor loading test bench according to claim 1, characterized in that, The mechanical transmission module includes a transmission shaft (50), a coupling, a motor support (51), and a torque sensor support (52). A test motor (7) is installed on the motor support (51), and a torque sensor (40) is installed on the torque sensor support (52). The output shaft of the test motor (7) is connected to the torque sensor (40) through the coupling. The output shaft of the torque sensor (40) is connected to one end of the transmission shaft (50) through the coupling. The other end of the transmission shaft (50) is connected to the windshield wiper. The angle encoder (41) is installed on the transmission shaft (50).

5. A windshield wiper motor loading test bench according to claim 4, characterized in that, The upper cabinet (1) is installed on a part of the surface away from the ground, and the motor support (51) and torque sensor support (52) are installed on the other part.

6. A windshield wiper motor loading test bench according to claim 1, characterized in that, The spray module also includes a drain trough (31), which is installed at the bottom of the upper cabinet (1) and connected to the water tank (30) through a drain pipe (32); the water tank (30) has a built-in water pump (33).

7. A windshield wiper motor loading test bench according to claim 1, characterized in that, The water tank (30) and the spray pipe are connected by a water pipe (34), and a valve is installed on the water pipe (34).

8. A windshield wiper motor loading test bench according to claim 1, characterized in that, The upper cabinet (1) is provided with a triangular bracket (11), and one side of the triangular bracket (11) is provided with an L-shaped corner bracket (12). The test windshield glass (10) is installed on the L-shaped corner bracket (12).

9. A windshield wiper motor loading test bench according to claim 1, characterized in that, The upper cabinet (1) has an upper cabinet door (13) and the side panel is a transparent side panel.

10. A windshield wiper motor loading test bench according to claim 1, characterized in that, The lower cabinet (2) has a lower cabinet door (20) and a brake caster (21) is provided on the surface near the ground.

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