A vehicle airbag teaching platform

Abstract

The present application relates to a kind of vehicle air bag teaching platform, vehicle body is moved linearly between first plate and second plate by guide rope;First plate is equipped with force accumulator spring and pressure regulating assembly, and vehicle body is provided with air bag assembly, air bag assembly includes hollow cylinder, rotating disc that is rotationally connected with hollow cylinder, brush, hollow cylinder and rotating disc inner cavity are interconnected, rotating disc is provided with several gas generating device with its rotation axis as center;The compression degree of force accumulator spring can be adjusted by pressure regulating assembly, by setting gas generating device, air bag is inflated in short time to realize unfolding when vehicle body is impacted, so that the real working process can be shown to students;By rotating rotating disc to drive annular array gas generating device, the real inflation condition of air bag can be shown multiple times in a class;Automatic switching gas generating device is realized.

Description

Technical Field

[0001] This invention relates to a vehicle airbag teaching platform, belonging to the field of teaching aids technology. Background Technology

[0002] When a car collision occurs, airbags can distribute the impact force evenly over the head and chest, preventing vulnerable passengers from directly colliding with the vehicle body and greatly reducing the possibility of injury.

[0003] Currently, the test benches used to demonstrate the working principle of car airbags are too large, and it is inconvenient for teachers to bring them to the classroom for on-site teaching, making it impossible for every student to do practical training.

[0004] For example, Chinese Patent Publication No. CN201698639U, titled "A Teaching and Training Device for the Principle of Automobile Airbags," published on January 5, 2011, includes an airbag test board, a cylinder, a sliding trolley, an airbag computer, an airbag circuit, and a cylinder control valve. The cylinder and cylinder control valve are fixed on the airbag test board, and the cylinder is connected to the sliding trolley. The airbag computer is fixed on the sliding trolley, and the cylinder control valve is connected to the cylinder through a pipeline. A speed control throttle valve is also provided on the air intake pipeline of the cylinder to adjust the speed of the cylinder's movement. The airbag circuit is silkscreened on the airbag test board, which also includes an airbag simulated resistor module, a simulated light bulb, a fault diagnosis output communication interface, and an airbag computer terminal output interface. It has the advantages of small size, low cost, portability, high degree of intuitive simulation, high reliability, and high operating efficiency. It can also be directly attached to a blackboard for on-site teaching.

[0005] However, existing solutions only simulate the working principle of car airbags and cannot truly reflect the actual situation of airbags when a car is involved in a collision. Currently, they either use other devices to simulate airbags or use compressed air to inflate airbags. However, an airbag is a device that deploys within 0.1 seconds. There is a lack of a solution that can truly reflect the reaction of a car airbag when it is involved in a collision. Furthermore, since it is used in the teaching process, it needs to be able to be demonstrated multiple times to facilitate students' understanding and learning. Summary of the Invention

[0006] The purpose of this invention is to provide a vehicle airbag teaching platform to solve the problems mentioned in the background art.

[0007] The technical solution of the present invention is as follows:

[0008] A vehicle airbag training platform, comprising:

[0009] A first plate and a second plate, with a guide rope provided between the first plate and the second plate;

[0010] The vehicle body moves linearly between the first and second plates via a guide rope.

[0011] The vehicle body is equipped with an airbag assembly, which includes a hollow cylinder, a cap disposed at the opening of the hollow cylinder, a turntable rotatably connected to the hollow cylinder, and an electric brush. An airbag is connected between the cap and the hollow cylinder. The hollow cylinder is in communication with the inner cavity of the turntable. The turntable is equipped with several gas generating devices centered on its rotation axis. The electric brush is electrically connected to one of the gas generating devices.

[0012] Preferably, a telescopic assembly consisting of multiple X-shaped rods movably connected is provided between the first plate and the second plate, and an automatically retractable spring turntable is installed on the first plate or the second plate, with the guide rope wound around the spring turntable.

[0013] Preferably, a storage spring and a pressure regulating component are installed on the first plate, wherein the pressure regulating component is used to adjust the compression degree of the storage spring;

[0014] The pressure regulating assembly includes a slider and an adjusting screw. The adjusting screw is threadedly connected to a first plate. The slider slides linearly on the first plate and is movably connected to one end of the adjusting screw. One end of the storage spring is fixed to the slider.

[0015] Preferably, the first plate is provided with a snap-fit ​​component, which is used to detachably snap-fit ​​with the vehicle body;

[0016] The snap-fit ​​assembly includes two rotating arms, which are cross-riveted by a rotating shaft. The ends of the two rotating arms near the vehicle body are provided as hook portions. A first return spring is connected between the two rotating arms. A first slot is provided on the side wall of the vehicle body near the snap-fit ​​assembly, and the hook portion engages with the first slot.

[0017] Preferably, the cap is made of a flexible material and the cap is detachably snapped into place with the opening.

[0018] Preferably, the gas generating device includes a cavity and a cavity cover for opening and closing the cavity. The cavity cover has an air hole that connects the inner cavity of the cavity with the inner cavity of the turntable. The cavity contains a heating wire, and the outer wall of the cavity is provided with a conductor that is electrically connected to the heating wire.

[0019] Preferably, the inner sidewall of the cavity is connected to a retaining plate via a second return spring, and the inner sidewall of the cavity is provided with a hook made of elastic material, which engages with the retaining plate. The outer edge of the retaining plate has a notch, and the retaining plate is provided with a first magnetic element.

[0020] The outer wall of the cavity is provided with a protective cover, an indicator plate is rotatably connected inside the protective cover, a second magnetic component is installed on the indicator plate, and a transparent window is provided on the protective cover.

[0021] Preferably, it also includes a piston cylinder assembly, the inner cavity of which is connected to the inner cavity of the hollow cylinder through an air guide pipe, the circumferential surface of the turntable is provided with a guide groove, the output end of the piston cylinder assembly is provided with a moving part that moves within the guide groove, and the back-and-forth movement of the piston cylinder assembly drives the turntable to rotate in one direction.

[0022] Preferably, the movable component is installed at the output end of the piston cylinder assembly via an elastic telescopic rod; the guide groove includes a track groove that is connected end to end and turns to form a closed loop, and the connection between two adjacent track grooves forms a stepped structure.

[0023] Preferably, the first plate is provided with a snap-fit ​​component, which is used to detachably snap-fit ​​with the vehicle body;

[0024] It also includes a first switch and a second switch connected in series with the conductor. The first switch is triggered when the snap-fit ​​assembly snaps into the vehicle body. The second switch is located on the moving path of the gas generator.

[0025] A reversing valve is installed inside the hollow cylinder. One output port of the reversing valve is connected to the exhaust port through the exhaust pipe. The exhaust port is installed at the rear of the vehicle body. One output port of the reversing valve is connected to the airbag and the air guide pipe. The input port of the reversing valve is connected to the inner cavity of the turntable.

[0026] The present invention has the following beneficial effects:

[0027] The compression level of the storage spring can be adjusted by the pressure adjustment component, thereby enabling impacts on the vehicle body at different speeds.

[0028] The first and second boards are connected by a guide rope and a telescopic assembly, allowing the board to be shrunk in size for easy carrying when not in use.

[0029] By setting up a gas generating device, the gas generating device inflates the airbag in a short time when the vehicle body is impacted, thus demonstrating the real working process to students. At the same time, due to the small overall size of the device and the need for multiple demonstrations, the rotating turntable drives the ring array of gas generating devices, allowing multiple sets of gas generating devices to be alternately connected to the brushes, thereby enabling multiple demonstrations of the real inflation of the airbag in a single lesson.

[0030] By setting up a piston cylinder assembly, when the gas generator inflates the airbag, the piston cylinder assembly performs work through the air guide pipe, thereby driving the turntable to rotate automatically and achieve automatic switching to a new gas generator. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of Embodiment 1 of the present invention;

[0032] Figure 2 This is a schematic diagram of the snap-fit ​​component structure of the present invention;

[0033] Figure 3 This is a schematic diagram of the pressure regulating component of the present invention;

[0034] Figure 4 This is a schematic diagram of the airbag assembly of the present invention when it is not triggered;

[0035] Figure 5 This is a schematic diagram of the airbag assembly of the present invention after it is triggered;

[0036] Figure 6 This is a partial cross-sectional view of the airbag assembly according to Embodiment 1 of the present invention;

[0037] Figure 7 This is a schematic diagram of the steps formed by adjacent track grooves of the present invention;

[0038] Figure 8 This is a cross-sectional view of the gas generating device of the present invention;

[0039] Figure 9 yes Figure 8 A magnified view of a portion of the image;

[0040] Figure 10 This is a schematic diagram of the card plate and its mating components of the present invention;

[0041] Figure 11 This is a schematic diagram of the movement trajectory of the moving component of the present invention within the track groove;

[0042] Figure 12 This is a schematic diagram of Embodiment 2 of the present invention;

[0043] Figure 13 This is a partial cross-sectional view of the airbag assembly according to Embodiment 2 of the present invention.

[0044] The reference numerals in the figure are as follows:

[0045] 1. First plate; 2. Second plate; 3. Vehicle body; 31. Wheel; 32. First slot; 4. Guide rope; 5. Storage spring; 6. Pressure adjustment assembly; 61. Slider; 62. Adjusting screw; 7. Telescopic assembly; 8. Airbag assembly; 81. Hollow cylinder; 811. Opening; 82. Cylinder cover; 83. Brush; 84. Gas generating device; 841. Cavity; 842. Cavity cover; 843. Air hole; 844. Heating wire; 845. Conductor; 846. Card plate; 8461. Notch; 8462. Second return spring; 847. Hook; 848. Protective cover; 8481. Transparent window; 849. Indicator plate; 85. Turntable; 851. Guide groove; 8511. Track groove; 86. Piston cylinder assembly; 861. Piston rod; 862. Third return spring; 87. Elastic telescopic rod; 871. Moving part; 88. Airbag; 89. Air duct; 9. Snap-fit ​​assembly; 91. Rotating shaft; 92. Rotating arm; 93. First return spring; 10. Reversing valve; 101. Exhaust pipe; 102. Exhaust port; 103. First switch; 104. Second switch. Detailed Implementation

[0046] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0047] Example 1:

[0048] like Figure 1-10 As shown.

[0049] like Figure 1 As shown, a guide rope 4 is connected between the first plate 1 and the second plate 2. The guide rope 4 runs through the vehicle body 3 in a straight line. The first plate 1 and the second plate 2 are also equipped with clamping components. The clamping components can clamp and fix the first plate 1 and the second plate 2 to the podium or desk. The clamping components are existing structures and will not be described in detail. A spring turntable is installed on the first plate 1 (not shown in the attached figure). One end of the guide rope 4 is wrapped around the spring turntable. The spring turntable automatically retracts, so that the guide rope 4 between the first plate 1 and the second plate 2 is in a taut state. When not in use, the guide rope 4 is wrapped around the spring turntable, which is convenient for storage.

[0050] The telescopic assembly 7 is composed of multiple X-shaped rods connected in a movable manner. The telescopic assembly 7 can extend and retract to adjust the distance between the first plate 1 and the second plate 2, which is beneficial for the storage and transportation of the entire device.

[0051] The bottom of the vehicle body 3 is equipped with wheels 31. The vehicle body 3 moves by rolling on the podium, desks and the ground through the wheels 31. During this process, the movement of the vehicle body 3 is guided by the guide rope 4.

[0052] like Figure 1 , 3As shown, a pressure regulating assembly 6 is installed on the first plate 1. The pressure regulating assembly 6 includes a slider 61 and an adjusting screw 62. The adjusting screw 62 is threadedly connected to the first plate 1. The slider 61 slides linearly relative to the first plate 1. One end of the adjusting screw 62 is movably connected to the slider 61. One end of the storage spring 5 is fixed to the side wall of the slider 61.

[0053] like Figure 1 , 2 As shown, a snap-fit ​​assembly 9 is installed on the first plate 1. The snap-fit ​​assembly 9 includes a rotating shaft 91, two rotating arms 92, and a first return spring 93 located between the two rotating arms 92. The two rotating arms 92 are cross-riveted at the middle by the rotating shaft 91. The rotating shaft 91 is fixed on the first plate 1. The end of the two rotating arms 92 near the vehicle body 3 is set as a hook part, and the end of the two rotating arms 92 away from the vehicle body 3 is set as a handrail part. The side wall of the vehicle body 3 near the two rotating arms 92 is provided with a first slot 32, and the hook part is engaged with the first slot 32.

[0054] like Figure 4-6 As shown, the airbag assembly 8 includes a hollow cylinder 81, a cylinder cover 82, a brush 83, a gas generating device 84, a turntable 85, a piston cylinder assembly 86, an elastic telescopic rod 87, an airbag 88, and an air guide tube 89.

[0055] The hollow cylinder 81 is fixed to the vehicle body 3 with one open end. The cylinder cover 82 is made of flexible material and is used to open and close the opening 811 of the hollow cylinder 81. The two ends of the airbag 88 are fixedly connected to the cylinder cover 82 and the inner wall of the hollow cylinder 81, respectively. Under normal conditions, the airbag 88 is folded and stored in a smaller size and inserted into the hollow cylinder 81, and the opening 811 is closed with the cylinder cover 82. The airbag 88 is provided with a vent.

[0056] The turntable 85 is hollow inside and rotatably connected to the hollow cylinder 81. The inner cavity of the turntable 85 is connected to the inner cavity of the hollow cylinder 81. Several gas generating devices 84 are arranged in a ring around the rotation axis of the turntable 85. The gas generating devices 84 are installed on the turntable 85 by bolt assemblies.

[0057] The brush 83 is fixed to the outer wall of the hollow cylinder 81. One group of several annular array gas generating devices 84 contacts the brush 83 to achieve electrical connection. The rotating turntable 85 can switch different gas generating devices 84 to be electrically connected to the brush 83.

[0058] The piston cylinder assembly 86 includes a piston cylinder, a piston rod 861, and a third return spring 862. The inner cavity of the piston cylinder is connected to the inner cavity of the hollow cylinder 81 through a gas guide pipe 89. One end of the piston rod 861 is in a gas-sealed sliding fit inside the piston cylinder, and the other end of the piston rod 861 is equipped with a movable part 871 through an elastic telescopic rod 87. The elastic force of the third return spring 862 pushes the piston rod 861 to move to the left to reset.

[0059] like Figure 4 , 6 As shown, a guide groove 851 is provided on the circumferential surface of the turntable 85; as Figure 7 As shown, the guide groove 851 includes several track grooves 8511 connected end to end to form a closed loop. The end of the previous set of track grooves 8511 and the beginning of the adjacent next set of track grooves 8511 form a stepped structure. The previous set of track grooves 8511 extends obliquely in the direction of the axis of the turntable 85, and the adjacent next set of track grooves 8511 extends obliquely in the direction of the axis of the turntable 85. The elastic telescopic rod 87 tends to extend and pushes the moving part 871 at its free end to always abut against the track groove 8511. The moving part 871 has a spherical structure and moves and cooperates within the track groove 8511.

[0060] like Figure 8 As shown, the gas generating device 84 includes a hollow cavity 841 and a cavity cover 842 that is threadedly connected to the opening of the cavity 841. The cavity cover 842 has multiple air holes 843. The inner cavity of the cavity 841 is connected to the inner cavity of the turntable 85 through the air holes 843. The inner cavity of the cavity 841 is provided with a heating wire 844 (resistance wire) and a gas generating agent (including sodium azide and ammonium nitrate, etc.). The outer wall of the cavity 841 is provided with a conductor 845, which is electrically connected to the heating wire 844.

[0061] like Figure 8 , 9 As shown, the inner cavity of the cavity 841 is isolated from the gas generator by the clamping plate 846 to form an active space. A second reset spring 8462 is connected between the inner wall of the cavity 841 and the clamping plate 846 in this active space. The inner wall of the cavity 841 in this active space is provided with a hook 847 of elastic material. The outer edge of the clamping plate 846 is provided with a notch 8461. The side of the clamping plate 846 near the cavity cover 842 is provided with a cross groove. A first magnetic component is installed on the clamping plate 846.

[0062] A protective cover 848 is fixed to the outer wall of the cavity 841. An indicator plate 849 is rotatably connected inside the protective cover 848. A second magnetic component is installed on the indicator plate 849. The left half of the indicator plate 849 is the first color and corresponds to the N pole of the second magnetic component, while the left half of the indicator plate 849 is the second color and corresponds to the S pole of the second magnetic component. A transparent window 8481 is provided on the left half of the protective cover 848. Under normal conditions, the card plate 846 is not engaged with the hook 847. At this time, the external user can observe the first color of the left half of the indicator plate 849 through the transparent window 8481, indicating that the gas generator in the cavity 841 has not been used.

[0063] The second plate 2 is equipped with a rubber buffer layer to reduce the impact on the vehicle body 3.

[0064] like Figure 10 As shown, the second return spring 8462 is located at the center of the retaining plate 846.

[0065] The vehicle body 3 is also equipped with airbag sensors, batteries, electronic controllers, etc. When a collision occurs during vehicle body 3's operation, the airbag sensors first receive the impact signal. As long as the specified intensity is reached, the airbag sensors activate and send a signal to the electronic controller. After receiving the signal, the electronic controller compares it with its previously stored signal. If the airbag deployment conditions are met, the drive circuit sends a start signal to the gas generator 84 in the airbag assembly 8. Upon receiving the signal, the gas generator 84 ignites the gas generating agent inside, producing a large amount of gas, causing the airbag 88 to break through the cover 82 and deploy rapidly in a very short time, forming an elastic air cushion in front of the driver or passenger model; this is existing technology and will not be described in detail.

[0066] Working principle:

[0067] Fix the first plate 1 and the second plate 2 to the lectern / desk, or adjust the length of the telescopic component 7 and fix it temporarily; then push the vehicle body 3 against the first plate 1. During this process, the vehicle body 3 presses the storage spring 5 and makes the hook parts of the two rotating arms 92 engage with the first slot 32, so that the vehicle body 3 is fixed relative to the first plate 1.

[0068] The compression of the storage spring 5 can be adjusted by rotating the adjusting screw 62 to move the slider 61 closer to or further away from the vehicle body 3, thereby adjusting the impact force of the vehicle body 3 hitting the second plate 2.

[0069] By pressing the handle at the left end of the rotating arm 92 and compressing the first return spring 93, the hooks at the right ends of the two rotating arms 92 are brought closer to each other, thereby disengaging the hooks at the right ends of the rotating arms 92 from the first slot 32. At this time, the elastic force of the storage spring 5 pushes the vehicle body 3 to collide with the second plate 2. During this process, the vehicle body 3 is guided to move by the guide rope 4, and the vehicle body 3 rolls on the lectern / classroom table by the wheels 31.

[0070] When the airbag sensor detects that the vehicle body 3 has impacted the second plate 2 to a specified intensity, the electronic controller sends a signal to the gas generating device 84, which is electrically connected to the brush 83, through the drive circuit and brush 83. This causes the heating wire 844 in the gas generating device 84 to be energized and heated. The gas generating agent explodes when heated, producing gas. The generated gas is then transported through the air hole 843 and the inner cavity of the turntable 85 to the hollow cylinder 81, causing the airbag 88, which is in a folded and stored state, to inflate. The inflated airbag 88 pushes the cylinder cover 82 to open the opening 811 of the hollow cylinder 81.

[0071] During the inflation of the airbag 88, air is pumped into the cylinder cavity through the air guide tube 89, pushing the piston rod 861 to the right and compressing the third return spring 862, causing the moving part 871 to move from point A to point B within the track groove 8511 (e.g., Figure 11 As shown), during this process, the turntable 85 rotates relative to the hollow cylinder 81, causing the original gas generating device 84 to disengage from the brush 83.

[0072] After the airbag 88 deflates, the elastic force of the third return spring 862 pushes the piston rod 861 to move to the left to reset, causing the moving part 871 to move from point B to point C within the track groove 8511 (as shown). Figure 11 (As shown), during this process, the turntable 85 rotates relative to the hollow cylinder 81, causing the conductor 845 of the subsequent gas generating device 84 to come into contact with the brush 83.

[0073] Since the two adjacent track grooves 8511 form a step, the moving part 871 is guided to move in one direction. The piston rod 861 moves back and forth in the piston cylinder, thereby driving the gas generating device 84 of the annular array to alternate positions.

[0074] After the airbag 88 is deflated, folded and stored, it is inserted into the inner cavity of the hollow cylinder 81, and the opening 811 of the hollow cylinder 81 is closed again through the cylinder cap 82.

[0075] When the gas generator is heated, it explodes, producing gas. The gas pushes the locking plate 846 to the left and compresses the second return spring 8462, generating a reverse elastic force. The gas pushes the locking plate 846 to the left, engaging with the hook 847 to prevent the locking plate 846 from moving to the right. During this process, the locking plate 846 moves from the right side to the left side of the indicator plate 849. Through the magnetic engagement of the first magnetic component of the locking plate 846 and the second magnetic component of the indicator plate 849, the indicator plate 849 is rotated, causing the left and right sides of the indicator plate 849 to alternate positions. Thus, the second color of the indicator plate 849 can be seen through the transparent window 8481, indicating that the gas generator in the cavity 841 has been used.

[0076] When it is necessary to fill the cavity 841 with new gas generator, the cavity 841 and the cavity cover 842 are separated. First, an external tool and a cross groove are used to rotate the retaining plate 846 so that the notch of the retaining plate 846 aligns with the retaining hook 847. Then, the second return spring 8462 pushes the retaining plate 846 to move to the right to reset. During this process, the retaining plate 846 moves from the left to the right of the indicator plate 849. Through the magnetic cooperation between the first magnetic element of the retaining plate 846 and the second magnetic element of the indicator plate 849, the indicator plate 849 is rotated, so that the left and right positions of the indicator plate 849 alternate. Thus, the first color of the indicator plate 849 can be seen through the transparent window 8481. Then, new gas generator is filled into the cavity 841.

[0077] Example 2: Contains all the contents of Example 1, except that:

[0078] like Figure 12 As shown, a first switch 103 is installed in the first slot 32. The first switch 103 adopts a normally closed switch structure, and an exhaust port 102 is installed at the rear of the vehicle body 3; Figure 13 As shown, a reversing valve 10 is installed inside the hollow cylinder 81, dividing the inner cavity of the hollow cylinder 81 into a front cavity and a rear cavity. The airbag 88 is placed opposite each other in the front cavity, and the air guide pipe 89 is connected to the front cavity of the hollow cylinder 81. The inlet of the reversing valve 10 is connected to the rear cavity, and the first outlet of the reversing valve 10 is connected to the front cavity. The first outlet of the reversing valve 10 is also connected to the exhaust pipe 101, and the other end of the exhaust pipe 101 is connected to the exhaust port 102. A gas flow regulating valve (not shown in the attached figure) is installed on the exhaust port 102.

[0079] It also includes a second switch 104 connected in series with the first switch 103. The second switch 104 is a push-button switch / push-button switch, such as... Figure 5 As shown, the second switch 104 is installed on the outer wall of the hollow cylinder 81 and located on the rotation path of the gas generating device 84; the airbag sensor is electrically connected to the reversing valve 10, and the first switch 103 is electrically connected to the heating wire 844 in the gas generating device 84.

[0080] Working principle:

[0081] When the hook part of the rotating arm 92 engages with the first slot 32, the hook part of the rotating arm 92 presses the first switch 103, so that the first switch 103 is in the open state. At this time, the reversing valve 10 is normally connected to the rear cavity of the hollow cylinder 81 and the exhaust pipe 101; the second switch 104 is in the closed state.

[0082] When the user presses the rotating arm 92, the hook part disengages from the first slot 32, and the first switch 103 returns to its normal closed state. The conductor 845 drives the corresponding electrically connected heating wire 844 to generate heat. The gas generator explodes when heated, producing gas. The generated gas is transported through the air hole 843 and the inner cavity of the turntable 85 to the rear cavity of the hollow cylinder 81, and then through the reversing valve 10 to the exhaust pipe 101. It is then discharged from the exhaust port 102 at the rear of the vehicle body 3, and the discharged gas propels the vehicle body 3 forward.

[0083] The gas produced by the explosion propels vehicle 3 forward at a faster speed, which is beneficial for realistically simulating the rapid movement of vehicle 3.

[0084] When the vehicle body 3 collides with the second plate 2, the airbag sensor detects that the impact of the vehicle body 3 on the second plate 2 reaches the specified intensity. The electronic controller sends a signal to the reversing valve 10 through the drive circuit. The reversing valve 10 performs a switching action to connect the front and rear chambers of the hollow cylinder 81, so that the gas generated by the subsequent explosion enters the front chamber through the reversing valve 10 to quickly inflate the airbag 88. The subsequent steps are the same as in Embodiment 1 and will not be described again.

[0085] During the rotation of turntable 85, it drives the two adjacent gas generating devices 84 to alternate positions. During this process, the rotation of cavity 841 will contact the second switch 104, thereby pressing the second switch 104 once. The second switch 104 is changed to the open state after being pressed once. Thus, when a new set of gas generating devices 84 is electrically connected to conductor 845, although the first switch 103 is in the closed state, the second switch 104 is in the open state, preventing the new set of gas generating devices 84 from being activated.

[0086] When conducting another set of experiments, first engage the hook part of the rotating arm 92 with the first slot 32, so that the hook part of the rotating arm 92 presses the first switch 103, and the first switch 103 is in the open state. Then manually press the second switch 104 once, so that the second switch 104 is in the closed state.

[0087] The speed of the airflow discharged from the exhaust port 102 can be controlled by manually adjusting the gas flow regulating valve on the exhaust port 102, thereby controlling the movement speed of the vehicle body 3.

[0088] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A vehicle airbag teaching platform, characterized in that: include: A first plate (1) and a second plate (2), with a guide rope (4) provided between the first plate (1) and the second plate (2); The vehicle body (3) moves linearly between the first plate (1) and the second plate (2) via a guide rope (4); The vehicle body (3) is provided with an airbag assembly (8), which includes a hollow cylinder (81), a cylinder cover (82) provided in the opening (811) of the hollow cylinder (81), a turntable (85) rotatably connected to the hollow cylinder (81), and an electric brush (83). An airbag (88) is connected between the cylinder cover (82) and the hollow cylinder (81). The hollow cylinder (81) and the inner cavity of the turntable (85) are interconnected. The turntable (85) is provided with a plurality of gas generating devices (84) with its rotation axis as the center. The electric brush (83) is electrically connected to one of the gas generating devices (84). The gas generating device (84) includes a cavity (841) and a cavity cover (842) for opening and closing the cavity (841). The cavity cover (842) has an air hole (843) that connects the inner cavity of the cavity (841) and the inner cavity of the turntable (85). The cavity (841) contains a heating wire (844), and the outer wall of the cavity (841) is provided with a conductor (845) that is electrically connected to the heating wire (844). It also includes a piston cylinder assembly (86), the inner cavity of which is connected to the inner cavity of the hollow cylinder (81) through an air guide pipe (89), the circumferential surface of the turntable (85) is provided with a guide groove (851), the output end of the piston cylinder assembly (86) is provided with a moving part (871) that moves in the guide groove (851), and the back and forth movement of the piston cylinder assembly (86) drives the turntable (85) to rotate in one direction; The movable part (871) is installed at the output end of the piston cylinder assembly (86) via an elastic telescopic rod (87); the guide groove (851) includes a closed-loop track groove (8511) that is connected end to end and turns in sequence, and a stepped structure is formed at the junction of two adjacent track grooves (8511).

2. The vehicle airbag teaching platform as described in claim 1, characterized in that: A telescopic assembly (7) consisting of multiple X-shaped rods is provided between the first plate (1) and the second plate (2). An automatically retractable spring turntable is installed on the first plate (1) or the second plate (2). The guide rope (4) is wound around the spring turntable.

3. The vehicle airbag teaching platform as described in claim 1, characterized in that: The first plate (1) is equipped with a storage spring (5) and a pressure regulating component (6), the pressure regulating component (6) being used to adjust the compression degree of the storage spring (5); The pressure regulating assembly (6) includes a slider (61) and an adjusting screw (62). The adjusting screw (62) is threadedly connected to the first plate (1). The slider (61) slides linearly on the first plate (1) and is movably connected to one end of the adjusting screw (62). One end of the energy storage spring (5) is fixed on the slider (61).

4. The vehicle airbag teaching platform as described in claim 1, characterized in that: The first plate (1) is provided with a snap-fit ​​assembly (9), which is used to detachably snap-fit ​​with the vehicle body (3); The snap-fit ​​assembly (9) includes two rotating arms (92), which are cross-riveted by a rotating shaft (91). The ends of the two rotating arms (92) near the vehicle body (3) are configured as hooks. A first return spring (93) is connected between the two rotating arms (92). A first slot (32) is provided on the side wall of the vehicle body (3) near the snap-fit ​​assembly (9), and the hook engages with the first slot (32).

5. The vehicle airbag teaching platform as described in claim 1, characterized in that: The cap (82) is made of flexible material and the cap (82) and the opening (811) are detachably snapped together.

6. The vehicle airbag teaching platform as described in claim 1, characterized in that: The inner wall of the cavity (841) is connected to a retaining plate (846) via a second return spring (8462). The inner wall of the cavity (841) is provided with a hook (847) made of elastic material. The hook (847) engages with the retaining plate (846). The outer edge of the retaining plate (846) is provided with a notch (8461). The retaining plate (846) is provided with a first magnetic element. The outer wall of the cavity (841) is provided with a protective cover (848), and an indicator plate (849) is rotatably connected inside the protective cover (848). A second magnetic component is installed on the indicator plate (849), and a transparent window (8481) is provided on the protective cover (848).

7. The vehicle airbag teaching platform as described in claim 1, characterized in that: The first plate (1) is provided with a snap-fit ​​assembly (9), which is used to detachably snap-fit ​​with the vehicle body (3); It also includes a first switch (103) and a second switch (104) connected in series with the conductor (845). The first switch (103) is triggered when the snap-fit ​​assembly (9) snaps into the vehicle body (3). The second switch (104) is located on the moving path of the gas generator (84). A reversing valve (10) is installed inside the hollow cylinder (81). One output port of the reversing valve (10) is connected to the exhaust port (102) through the exhaust pipe (101). The exhaust port (102) is installed at the rear of the vehicle body (3). One output port of the reversing valve (10) is connected to the airbag (88) and the air guide pipe (89). The input port of the reversing valve (10) is connected to the inner cavity of the turntable (85).

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