A quantitative force-applying device for vehicle door

Abstract

The present invention discloses a quantitative force-applying device for a vehicle door, and relates to the technical field of automobile manufacturing equipment. The present invention comprises a movable base, a driving mechanism is installed on the top of the movable base, a force-applying shaft is installed on the output end of the driving mechanism, a tension pressure sensor is installed on the outer side of the support plate, and a force-applying rod is installed on the other end of the tension pressure sensor; it also comprises an upper sliding sleeve and a lower sliding sleeve which are arranged inside the force-applying rod and can rotate, and a slide is slidably connected inside the upper sliding sleeve and the lower sliding sleeve, and buffer plates are arranged at both ends of the slide. The present invention controls the upper sliding sleeve and the lower sliding sleeve to rotate, and the upper sliding sleeve and the lower sliding sleeve drive the slide to rotate, and the slide rotates to the outside of the force-applying rod, and then controls the slide to slide along the upper sliding sleeve, and the slide moves away from the lower sliding sleeve. At this time, the device moves the handle position, controls the slide to reset, and the slide is inserted into the door handle to imitate the door switch, and the test efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing equipment, and in particular to a quantitative force application device for a vehicle door. Background Art

[0002] In the field of automobile manufacturing, the comfort of the car door is an important factor in evaluating the car. The minimum force required to close the entire car door is a standard for evaluating the quality of the car. In automobile quality control, the difficulty of closing the car door is a very prominent problem. Among many economy cars, most of the car doors cannot be opened and closed well and easily. Every time the car owner closes the door, he has to push it hard, which is laborious and insecure.

[0003] In a Chinese patent (application number: CN201910210094.8), a quantitative force-applying device for car doors used in automobile manufacturing is disclosed, including a main frame, a sub-frame, a constant force thruster, a controller, an air pump and a suction cup. The sub-frame is installed on the front side of the main frame, and can move directly toward or away from the main frame through a power avoider. A hand-cranked lifting mechanism is installed on the front side of the sub-frame, one end of the constant force thruster is transmission-connected to the hand-cranked lifting mechanism, and a walking bracket is installed on the other end of the constant force thruster. The walking bracket The frame is a passive telescopic structure, and the suction cup is connected to the output rod of the constant force thruster through a universal joint. The constant force thruster includes a hydraulic rod and a variable frequency oil pump. The air pump and the variable frequency oil pump are both installed on the outside of the main frame. The variable frequency oil pump is connected to the liquid inlet end of the hydraulic rod through a hose, and the air pump is connected to the suction cup through an air pipe. A rotatable and adjustable disengagement sensor is also provided above the hydraulic rod. The disengagement sensor can move vertically synchronously with the hydraulic rod by means of a hand-cranked lifting mechanism. The disengagement sensor is electrically connected to the controller, and the variable frequency oil pump and the air pump are both electrically connected to the controller. This solution changes the pushing speed by adjusting the variable frequency oil pump, and at the same time, by adsorbing the suction cup on the car door, it eliminates the deviation caused by the actual contact angle, which can greatly improve the accuracy of the door closure detection;

[0004] The existing technology and this case also have the following defects:

[0005] 1. Due to the large number of tests, the car door needs to be opened and closed repeatedly. The existing device can only close the car door but cannot automatically open the door, which leads to low test efficiency;

[0006] 2. The durability test of the car door usually tests the opening and closing of the door at the same time. The existing equipment can only test the force applied to the closing of the car door, which is a single test and not comprehensive;

[0007] 3. When some devices test the door switch, the device needs to be clamped on the door handle, which can easily scratch the door handle when opening the door and crush the door when closing the door. Summary of the invention

[0008] The purpose of the present invention is to solve the problems of being unable to open a car door automatically, low test efficiency, single test, incomplete test, easy scratching of the door handle when opening the door, and easy crushing of the door when closing the door. The present invention provides a quantitative force application device for a car door.

[0009] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0010] A quantitative force-applying device for a vehicle door comprises a movable base, a driving mechanism is installed on the top of the movable base, a force-applying shaft is installed on the output end of the driving mechanism, the driving mechanism can drive the force-applying shaft to reciprocate, an adjusting plate is installed on the top of the force-applying shaft, a supporting plate is rotatably installed on the bottom of the adjusting plate, a tension-pressure sensor is installed on the outer side of the supporting plate, and a force-applying rod is installed on the other end of the tension-pressure sensor;

[0011] It also includes an upper sliding sleeve and a lower sliding sleeve which are arranged inside the force application rod and can rotate. The upper sliding sleeve and the lower sliding sleeve are slidably connected to the inside of the sliding rack, and buffer plates are arranged at both ends of the sliding rack.

[0012] Furthermore, the slide can automatically slide along the upper slide sleeve and the lower slide sleeve, and swing grooves are provided on both sides of the slide. Swing plates are hinged inside the swing grooves, and top springs are arranged between the two groups of swing plates. The interior of the buffer tray is hollow, and an air pump is fixedly connected to the top of the movable base, and the air outlet of the air pump is connected to the buffer tray through an air pipe.

[0013] Furthermore, the slide is semicircular, the angle between the upper slide sleeve and the lower slide sleeve is less than 180 degrees, and the hinge positions at both ends of the swing plate are respectively located at the edge positions of the upper slide sleeve and the lower slide sleeve.

[0014] Furthermore, a rubber outer package is provided on the outer side of the swing plate.

[0015] Furthermore, a driving shaft is rotatably mounted on the inner top of the force rod, the driving shaft is driven by a motor, the upper sliding sleeve is mounted on the bottom of the driving shaft, a driven shaft is rotatably mounted on the inner bottom of the force rod, and the lower sliding sleeve is fixedly connected to the top of the driven shaft.

[0016] Furthermore, a gear is rotatably mounted inside the upper sliding sleeve, and tooth grooves are provided on the outer sides of the sliding frame and the swing plate. When the swing plates are closed together inside the sliding frame, the two groups of tooth grooves form a complete set of transmission tooth grooves.

[0017] Furthermore, the upper sleeve is rotatably installed at the bottom of the active shaft, and a friction damping is provided at the connection position between the active shaft and the upper sleeve. A worm wheel is installed on the outer side of the active shaft, and a worm is rotatably installed on the top of the upper sleeve. The worm is meshed with the worm wheel, and the gear is fixedly connected to the worm. A clamping sleeve is fixedly connected to the bottom of the force application rod, and the clamping sleeve is sleeved on the outer side of the driven shaft. Two groups of grooves are provided on the inner wall of the clamping sleeve, and the angle between the two groups of grooves is degrees. A sliding hole is provided on the outer side of the driven shaft, and an electromagnet is installed inside the sliding hole. A clamping block that can be clamped in the clamping slot is slidably connected inside the sliding hole, and a retaining spring is provided between the clamping block and the electromagnet.

[0018] Furthermore, a control cabinet is installed on the top of the movable base, and the driving mechanism, the air pump and the electromagnet are all electrically connected to the control cabinet.

[0019] Furthermore, universal wheels are arranged around the bottom of the mobile base.

[0020] Furthermore, a sleeve hole is provided inside the adjustment plate, the force-applying shaft passes through the sleeve hole, the outer side of the adjustment plate is threadedly connected to an adjustment knob extending into the sleeve hole, a slide groove is provided inside the adjustment plate, an adjustment screw is rotatably installed inside the slide groove, a nut slider threadably connected to the adjustment screw is slidably connected inside the slide groove, and the support plate is rotatably installed at the bottom of the nut slider.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The present invention controls the upper sliding sleeve and the lower sliding sleeve to rotate, and the upper sliding sleeve and the lower sliding sleeve drive the slide to rotate, and the slide rotates to the outside of the force rod, and then controls the slide to slide along the upper sliding sleeve, and the slide moves away from the lower sliding sleeve. At this time, the device moves the handle position, controls the slide to reset, and the slide is inserted into the door handle to simulate the door switch, with high testing efficiency.

[0023] 2. The present invention can test the durability of the door switch by inserting the slide into the door handle. When the slide is located inside the force rod, the slide rests on the door through the buffer plate, and the force test of the door can be performed, so that the test is comprehensive.

[0024] 3. The present invention can prevent the handle or the door from being scratched when the door is opened or closed by arranging the swing plate and the buffer plate.

[0025] 4. The present invention applies a door closing force to the vehicle door through a driving mechanism, a force-applying shaft and a force-applying rod, and then feeds back the reaction force generated by the vehicle door on the force-applying rod through a pull pressure sensor. Through multiple detections, the test accuracy can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a three-dimensional schematic diagram of the present invention;

[0027] Figure 2 It is a schematic diagram of the force application rod of the present invention;

[0028] Figure 3 It is a schematic diagram of the swing plate part of the present invention;

[0029] Figure 4 is a schematic diagram of the carriage of the present invention;

[0030] Figure 5 is a schematic cross-sectional view of a buffer tray of the present invention;

[0031] Figure 6 The present invention Figure 2 The enlarged schematic diagram of part A in the middle;

[0032] Figure 7 The present invention Figure 2 The enlarged schematic diagram of part B in the middle;

[0033] Figure 8 It is a schematic diagram of a scraper handle of the present invention.

[0034] Figure numerals: 1. Mobile base; 2. Control cabinet; 3. Air pump; 4. Driving mechanism; 5. Force shaft; 6. Adjustment plate; 7. Adjustment knob; 8. Adjustment screw; 9. Nut slider; 10. Support plate; 11. Pull pressure sensor; 12. Force rod; 13. Active shaft; 14. Upper sleeve; 15. Driven shaft; 16. Lower sleeve; 17. Slide; 18. Pendulum plate; 19. Top spring; 20. Buffer plate; 21. Tooth groove; 22. Worm gear; 23. Worm; 24. Gear; 25. Clamping sleeve; 26. Clamping slot; 27. Electromagnet; 28. Block; 29. ​​Retaining spring. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0036] like Figure 1-Figure 8 As shown, a quantitative force-applying device for a vehicle door comprises a movable base 1, a driving mechanism 4 is mounted on the top of the movable base 1, a force-applying shaft 5 is mounted on the output end of the driving mechanism 4, the driving mechanism 4 can drive the force-applying shaft 5 to reciprocate, an adjusting plate 6 is mounted on the top of the force-applying shaft 5, a supporting plate 10 is rotatably mounted on the bottom of the adjusting plate 6, a tension pressure sensor 11 is mounted on the outer side of the supporting plate 10, and a force-applying rod 12 is mounted on the other end of the tension pressure sensor 11;

[0037] The upper sliding sleeve 14 and the lower sliding sleeve 16 are rotatably arranged inside the force application rod 12 . A sliding rack 17 is slidably connected inside the upper sliding sleeve 14 and the lower sliding sleeve 16 . Buffer plates 20 are arranged at both ends of the sliding rack 17 .

[0038] When in use, the device is pushed to the side of the vehicle door by moving the base 1. When the vehicle door needs to be tested by applying force, the slide 17 is located inside the force-applying rod 12. Figure 2 As shown, the buffer plate 20 is pressed against the door. Since two groups of buffer plates 20 are provided, and the buffer plates 20 are in the shape of suction cups, they can be temporarily adsorbed on the door, which can prevent the slide 17 and the door from being displaced when the door is closed. At this time, the driving force is given to the force shaft 5 by controlling the driving mechanism 4. The driving mechanism 4 is a variable frequency oil pump. The driving force of the force shaft 5 is controlled by the driving mechanism 4. The force shaft 5 drives the adjustment plate 6 to swing, and the support plate 10 to swing. The support plate 10 drives the force rod 12 to swing through the tension pressure sensor 11. The force rod 12 gives the door closing force through the slide 17. Since the support plate 10 can rotate relative to the adjustment plate 6, the slide 17 can always press vertically on the door, further ensuring the stability of the door closing. By observing the driving force applied by the driving mechanism 4 and detecting the reaction force of the door with the tension pressure sensor 11, the test results can be improved by analyzing the two groups of data.

[0039] When the durability of the door switch needs to be tested, the upper sliding sleeve 14 and the lower sliding sleeve 16 are controlled to rotate, and the upper sliding sleeve 14 and the lower sliding sleeve 16 drive the slide 17 to rotate to the outside of the force application rod 12. At this time, the slide 17 is controlled to slide along the upper sliding sleeve 14, and the slide 17 is away from the lower sliding sleeve 16. At this time, the slide 17 is opened, and then the slide 17 is moved to the door handle position, and then the slide 17 is controlled to rotate, and the slide 17 is inserted into the door handle. Figure 8 As shown, when the force application rod 12 swings, the door switch can be driven by the slide 17, so that the durability of the door switch can be tested without the need for additional testing equipment, and the functionality is strong.

[0040] like Figure 2 As shown, in some embodiments, the slide 17 can automatically slide along the upper slide sleeve 14 and the lower slide sleeve 16, and swing grooves are provided on both sides of the slide 17. A swing plate 18 is hinged inside the swing groove, and a top spring 19 is arranged between the two groups of swing plates 18. The interior of the buffer plate 20 is designed to be hollow, and an air pump 3 is fixedly connected to the top of the movable base 1, and the air outlet of the air pump 3 is connected to the buffer plate 20 through an air pipe.

[0041] When a force test is required on the door, and the force applied is relatively large, the air pump 3 controls the internal air pressure of the buffer tray 20, thereby increasing the buffer force of the buffer tray 20, which can prevent the slide 17 from hitting the door, and is suitable for different test intensities;

[0042] When the durability of the door switch needs to be tested, such as Figure 8As shown, the slide 17 passes through the door handle. At this time, the swing plate 18 is located between the upper sliding sleeve 14 and the lower sliding sleeve 16. Under the action of the top spring 19, the two groups of swing plates 18 are unfolded. At this time, the two groups of swing plates 18 can limit the upper sliding sleeve 14 and the lower sliding sleeve 16 from sliding relative to the slide 17. When the force rod 12 applies a closing force to the door, under the action of the swing plate 18, the force rod 12 will not drive the upper sliding sleeve 14 and the lower sliding sleeve 16 to move relative to the slide 17, and the door closing is stable. At the same time, under the action of the swing plate 18, the door closing force can be dispersed to prevent the door from being pressed. When the door is opened, the air pump 3 is used to make the internal air pressure of the buffer plate 20 reach the maximum. At this time, the hardness of the buffer plate 20 is relatively large. The buffer plate 20 can limit the upper sliding sleeve 14 and the lower sliding sleeve 16 from sliding relative to the slide 17. When the door is opened, the force rod 12 applies a pulling force to the upper sliding sleeve 14 and the lower sliding sleeve 16 to prevent the slide 17 from detaching from the upper sliding sleeve 14 and the lower sliding sleeve 16, and the door opening is stable.

[0043] like Figure 2 As shown, in some embodiments, the slide 17 is semicircular, the angle between the upper slide sleeve 14 and the lower slide sleeve 16 is less than 180 degrees, and the hinge positions at both ends of the swing plate 18 are respectively located at the edge positions of the upper slide sleeve 14 and the lower slide sleeve 16.

[0044] Through this design, by utilizing the structure of the slide 17 itself, when the car door is closed, the slide 17 can also limit the upper slide sleeve 14 and the lower slide sleeve 16 from sliding relative to the slide 17. At the same time, the angle between the upper slide sleeve 14 and the lower slide sleeve 16 is less than 180 degrees, and the hinge positions at both ends of the swing plate 18 are respectively located at the edge positions of the upper slide sleeve 14 and the lower slide sleeve 16. When the swing plate 18 is unfolded, it can support the upper slide sleeve 14 and the lower slide sleeve 16.

[0045] like Figure 2 As shown, in some embodiments, the outer side of the swing plate 18 is provided with a rubber outer package to further prevent scratching the door and the handle.

[0046] like Figure 2 As shown, in some embodiments, a driving shaft 13 is rotatably mounted on the inner top of the force rod 12, the driving shaft 13 is driven by a motor, an upper sleeve 14 is mounted on the bottom of the driving shaft 13, a driven shaft 15 is rotatably mounted on the inner bottom of the force rod 12, and a lower sleeve 16 is fixedly connected to the top of the driven shaft 15.

[0047] When it is necessary to control the rotation of the slide 17, the motor is controlled to rotate, the motor drives the active shaft 13 to rotate, the active shaft 13 drives the upper sleeve 14 to rotate, the upper sleeve 14 drives the slide 17 to rotate, and the slide 17 drives the lower sleeve 16 to rotate, ensuring that the slide 17 can be stably slidably connected in the upper sleeve 14 and the lower sleeve 16 when it rotates to any direction.

[0048] like Figure 3As shown, in some embodiments, a gear 24 is rotatably installed inside the upper sleeve 14, and tooth grooves 21 are provided on the outer sides of the slide 17 and the swing plate 18. When the swing plate 18 is closed inside the slide 17, the two groups of tooth grooves 21 form a complete set of transmission tooth grooves.

[0049] When it is necessary to control the slide 17 to slide relative to the upper sleeve 14, the control gear 24 rotates, and the gear 24 drives the slide 17 to rotate through the tooth groove 21. At this time, the driving force of the gear 24 is greater than the elastic force of the top spring 19. When the swing plate 18 moves to the position of the upper sleeve 14, the swing plate 18 automatically closes together. At this time, the tooth groove 21 on the swing plate 18 can also engage with the gear 24, thereby stably driving the slide 17 to slide relative to the upper sleeve 14.

[0050] like Figure 6 As shown, in some embodiments, the upper sleeve 14 is rotatably installed at the bottom of the active shaft 13, and a friction damper is arranged at the connection position between the active shaft 13 and the upper sleeve 14. A worm wheel 22 is installed on the outer side of the active shaft 13, and a worm 23 is rotatably installed on the top of the upper sleeve 14. The worm 23 is meshed with the worm wheel 22, and the gear 24 is fixedly connected to the worm 23. A sleeve 25 is fixedly connected to the bottom of the force application rod 12, and the sleeve 25 is sleeved on the outer side of the driven shaft 15. Two groups of grooves 26 are provided on the inner wall of the sleeve 25, and the angle between the two groups of grooves 26 is 180 degrees. A sliding hole is provided on the outer side of the driven shaft 15, and an electromagnet 27 is installed inside the sliding hole. A block 28 that can be engaged in the groove 26 is slidably connected inside the sliding hole, and a retaining spring 29 is provided between the block 28 and the electromagnet 27.

[0051] When it is necessary to control the slide 17 to rotate, the electromagnet 27 is energized by controlling the electromagnet 27, and the electromagnet 27 generates a magnetic force to drive the block 28 away from the slot 26. At this time, the motor is controlled to rotate, and the motor drives the active shaft 13 to rotate. The active shaft 13 drives the upper sleeve 14 to rotate through friction damping, and the upper sleeve 14 drives the slide 17 to rotate. The slide 17 drives the lower sleeve 16 to rotate, and the lower sleeve 16 drives the driven shaft 15 to rotate. The driven shaft 15 drives the block 28 to rotate to the position of another group of slots 26. At the same time, the electromagnet 27 is de-energized, and the retaining spring 29 pushes the block 28 to be clamped in the other group of slots 26. At this time, the driven shaft 15 is locked, and the driven shaft 15 limits the rotation of the slide 17 through the lower sleeve 16, and the slide 17 limits the upper sleeve 14 rotates, and at this time, the driving shaft 13 is continued to be controlled to rotate. The driving force of the driving shaft 13 is greater than the friction damping, and the driving shaft 13 rotates relative to the upper sleeve 14. The driving shaft 13 drives the worm wheel 22 to rotate relative to the upper sleeve 14, and the worm wheel 22 drives the worm 23 to rotate. The worm 23 drives the gear 24 to rotate, and the gear 24 drives the slide 17 to rotate through the tooth groove 21. At this time, the driving force of the gear 24 is greater than the elastic force of the top spring 19. When the swing plate 18 moves to the position of the upper sleeve 14, the swing plate 18 automatically closes together. At this time, the tooth groove 21 on the swing plate 18 can also mesh with the gear 24, so as to control the slide 17 to slide relative to the upper sleeve 14. The rotation and sliding of the slide 17 can be realized through a set of drives, and the structure is compact.

[0052] like Figure 1 As shown, in some embodiments, a control cabinet 2 is installed on the top of the mobile base 1, and the driving mechanism 4, the air pump 3 and the electromagnet 27 are all electrically connected to the control cabinet 2. The control cabinet 2 can control the driving force generated by the driving mechanism 4, and can control the power on and off of the air pump 3 and the electromagnet 27, which is convenient for control.

[0053] like Figure 1 As shown, in some embodiments, universal wheels are provided around the bottom of the mobile base 1 to facilitate the movement of the device.

[0054] like Figure 1 As shown, in some embodiments, a sleeve hole is opened inside the adjustment plate 6, and the force-applying shaft 5 passes through the sleeve hole. The outer side of the adjustment plate 6 is threadedly connected with an adjustment knob 7 extending into the sleeve hole. A slide groove is opened inside the adjustment plate 6, and an adjusting screw 8 is rotatably installed inside the slide groove. A nut slider 9 threadably connected to the adjusting screw 8 is slidably connected inside the slide groove, and a support plate 10 is rotatably installed at the bottom of the nut slider 9.

[0055] When the position of the door handle changes, loosen the adjusting knob 7, and then control the adjusting plate 6 to slide up and down relative to the force-applying shaft 5, so that the slide 17 corresponds to the handle position, so that it can be suitable for different vehicles. When it is necessary to control the swing radius, turn the adjusting screw 8, and the adjusting screw 8 drives the nut slider 9 to slide, and the nut slider 9 drives the support plate 10 to move. At this time, the swing radius of the slide 17 changes, so that the device can be used in different environments.

[0056] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quantitative force-applying device for a vehicle door, comprising a movable base (1), characterized in that: The mobile base A driving mechanism (4) is installed on the top of (1), and a force-applying shaft (5) is installed on the output end of the driving mechanism (4). The driving mechanism (4) can drive the force-applying shaft (5) to rotate reciprocatingly, an adjusting plate (6) is installed on the top of the force-applying shaft (5), a supporting plate (10) is rotatably installed on the bottom of the adjusting plate (6), a tension and pressure sensor (11) is installed on the outer side of the supporting plate (10), and a force-applying rod (12) is installed on the other end of the tension and pressure sensor (11); It also includes an upper sliding sleeve (14) and a lower sliding sleeve (16) which are arranged inside the force application rod (12) and can rotate, and a sliding rack (17) is slidably connected inside the upper sliding sleeve (14) and the lower sliding sleeve (16), and a buffer plate (20) is arranged at both ends of the sliding rack (17); The slide (17) can slide automatically along the upper slide sleeve (14) and the lower slide sleeve (16), and swing grooves are provided on both sides of the slide (17), and swing plates (18) are hinged inside the swing grooves. A top spring (19) is provided between two groups of the swing plates (18). The interior of the buffer plate (20) is designed to be hollow, and an air pump (3) is fixedly connected to the top of the movable base (1), and the air outlet of the air pump (3) is connected to the buffer plate (20) through an air pipe; The slide frame (17) is semicircular, the angle between the upper slide sleeve (14) and the lower slide sleeve (16) is less than 180 degrees, and the hinge positions at both ends of the swing plate (18) are respectively located at the edge positions of the upper slide sleeve (14) and the lower slide sleeve (16); The outer side of the swing plate (18) is provided with a rubber outer package; A driving shaft (13) is rotatably mounted on the inner top of the force application rod (12), and the driving shaft (13) is driven by a motor. The upper sliding sleeve (14) is mounted on the bottom of the driving shaft (13). A driven shaft (15) is rotatably mounted on the inner bottom of the force application rod (12), and the lower sliding sleeve (16) is fixedly connected to the top of the driven shaft (15); A gear (24) is rotatably mounted inside the upper sliding sleeve (14), and tooth grooves (21) are provided on the outer sides of the sliding frame (17) and the swing plate (18). When the swing plate (18) is placed together inside the sliding frame (17), two groups of tooth grooves (21) form a complete set of transmission tooth grooves; The upper sleeve (14) is rotatably mounted on the bottom of the driving shaft (13); a friction damper is provided at the connection position between the driving shaft (13) and the upper sleeve (14); a worm wheel (22) is mounted on the outer side of the driving shaft (13); a worm (23) is rotatably mounted on the top of the upper sleeve (14); the worm (23) is meshed with the worm wheel (22); the gear (24) is fixedly connected to the worm (23); and a clamping sleeve (25) is fixedly connected to the bottom of the force application rod (12). ), the ferrule (25) is sleeved on the outer side of the driven shaft (15), the inner wall of the ferrule (25) is provided with two groups of slots (26), the angle between the two groups of slots (26) is 180 degrees, the outer side of the driven shaft (15) is provided with a sliding hole, an electromagnet (27) is installed inside the sliding hole, a block (28) that can be snapped into the slot (26) is slidably connected inside the sliding hole, and a retaining spring (29) is provided between the block (28) and the electromagnet (27); The sliding frame (17) is inserted into the door handle to test the durability of the door switch. When the sliding frame (17) is located inside the force application rod, the sliding frame (17) is pressed against the door through the buffer plate (20), so that the force application test of the door can be performed.

2. A door quantitative force application device according to claim 1, characterized in that: A control cabinet (2) is installed on the top of the mobile base (1), and the driving mechanism (4), the air pump (3) and the electromagnet (27) are electrically connected to the control cabinet (2).

3. A door quantitative force application device according to claim 1, characterized in that: Universal wheels are arranged around the bottom of the mobile base (1).

4. A door quantitative force application device according to claim 1, characterized in that: The adjustment plate A sleeve hole is provided inside the adjusting plate (6), the force-applying shaft (5) passes through the sleeve hole, the outer side of the adjusting plate (6) is threadedly connected with an adjusting knob (7) extending into the sleeve hole, a slide groove is provided inside the adjusting plate (6), an adjusting screw (8) is rotatably installed inside the slide groove, a nut slider (9) threadedly connected to the adjusting screw (8) is slidably connected inside the slide groove, and the support plate (10) is rotatably installed at the bottom of the nut slider (9).

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