Automobile air bag restraint system multi-point impact detection device

Abstract

The invention discloses an automobile airbag multi-point impact detection device which comprises a fixed plate, an airbag assembly is movably clamped on the fixed plate, a positioning plate is arranged on one side of the fixed plate, a plurality of moving plates are slidably arranged on the positioning plate, a vertical plate is arranged on one side, away from the fixed plate, of the positioning plate, and a cylinder is fixedly arranged on one side, close to the positioning plate, of the vertical plate. A detection assembly is arranged on one side of the cylinder, and an arc-shaped plate is fixedly arranged at the end, close to the vertical plate, of the moving plate, slidably connected with the cylinder and in transmission connection with the detection assembly. According to the automobile airbag multi-point impact detection device provided by the invention, through cooperation of the arc-shaped plate, the arc-shaped groove, the round rod and the circular ring, the circular ring and the recording pen can rotate in the airbag expansion process, so that the recording pen leaves a track on the recording plate, and an operator can conveniently analyze and observe data.

Description

Technical Field

[0001] The invention relates to the technical field of automobile safety airbag detection, in particular to a multi-point impact detection device for automobile safety airbags. Background Art

[0002] A car airbag is a passive safety device used to protect car occupants from serious injury in a collision. It is usually composed of collision sensors, airbag computers, system indicator lights, airbag components, etc. When a vehicle collides, the collision sensor will quickly detect the collision signal and transmit the signal to the airbag computer. The airbag computer will determine whether the airbag needs to be detonated based on information such as the intensity and angle of the collision. If the airbag needs to be detonated, the airbag computer will issue a command to ignite the ignition agent in the gas generator, generating a large amount of gas that quickly fills the airbag, causing the airbag to expand and deploy in a very short time, forming a cushion, and reducing the impact force on the driver and passengers.

[0003] Before being put into use, airbags usually need to be impact-tested to ensure that they can fully deploy as expected during a collision. In order to measure the impact force, multiple movable rods can be installed on one side of the airbag. Each rod has a different angle with the airbag. By counting the distance these rods move, the expansion status of each part of the airbag can be analyzed. This method is more economical than using sensors. However, this process requires the operator to carefully read the scale of each rod, so it is time-consuming and prone to errors. Summary of the invention

[0004] The object of the present invention is to provide a multi-point impact detection device for automobile airbags to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-point impact detection device for an automobile airbag, comprising a fixed plate, on which an airbag assembly is movably clamped, a positioning plate is provided on one side of the fixed plate, a plurality of movable plates are slidably provided on the positioning plate, a vertical plate is provided on the side of the positioning plate away from the fixed plate, a cylinder is fixedly provided on the side of the vertical plate close to the positioning plate, a detection component is provided on one side of the cylinder, and an arc plate is fixedly provided on one end of the movable plate close to the vertical plate, the arc plate is slidably connected to the cylinder and is transmission-connected to the detection component.

[0006] As a further solution of the present invention: the detection component includes a circular ring, which is movably mounted on the outside of the cylinder, and there are multiple circular rings. An arc groove is provided on the outside of the arc plate, and a round rod is fixedly provided on the inner side of each circular ring, and the round rod slides in fit with the arc groove. A recording pen is fixedly provided on one side of the circular ring, and a recording plate is provided on one side of the cylinder, and the recording pen is movably abutted against the recording plate.

[0007] As a further solution of the present invention: a notch is provided in the center of the cylinder, a screw rod is rotatably arranged in the notch, one end of the screw rod movably passes through the cylinder and a movable block is movably sleeved on the outer side of the end, a cross bar is fixedly arranged on one side of the movable block, and the end of the cross bar movably passes through the side wall of the cylinder away from the movable block, a fixed block is fixedly arranged on one side of the movable block, a movable block is slidably arranged in the fixed block, the end of the movable block away from the fixed block is fixedly connected to the recording plate, and a positioning spring is fixedly connected between the movable block and the fixed block.

[0008] As a further solution of the present invention: a movable rack is fixedly provided on one side of the arc plate, the movable rack is slidably connected to the slot, a rotating gear is fixedly sleeved on the outer side of the screw rod, the rotating gear is movably arranged in the slot, and the movable rack is meshed with the rotating gear for transmission.

[0009] As a further solution of the present invention: a horizontal plate is fixedly arranged on the positioning plate, a plurality of wiping pads are fixedly arranged on the bottom of the horizontal plate, the lateral distance between the wiping pad and the recording plate is greater than the lateral distance between the recording pen and the recording plate, and the wiping pad is movably abutted against the recording plate.

[0010] As a further solution of the present invention: a plurality of fixed frames are fixedly arranged at the bottom of the horizontal plate on one side of the wiping pad, a movable rod is laterally movably arranged on one side of the fixed frame, a limiting plate is fixedly arranged at one end of the movable rod close to the recording plate, an oblique groove is formed at the end of the limiting plate away from the wiping pad, a first spring is fixedly arranged between the movable rod and the inner wall of the fixed frame, a limiting rod is fixedly arranged on the top of the recording plate, and the limiting rod is movably abutted against the oblique groove.

[0011] As a further solution of the present invention: a movable plate is movably arranged in the fixed frame, a positioning groove and a reset groove are respectively provided on both sides of the movable plate, a positioning rod is fixedly arranged at the bottom of the movable rod, a clamping plate is fixedly arranged in the positioning groove of the movable plate, the positioning rod is slidably connected to the positioning groove and movably clamped with the clamping plate, an inclined plate is fixedly arranged in the reset groove of the movable plate, a transverse rod is movably arranged above the inclined plate on the fixed frame, a reset rod is fixedly arranged at the bottom of the transverse rod, the reset rod is slidably connected to the reset groove and movably abuts against the inclined plate, and a second spring is fixedly arranged between the transverse rod and the inner wall of the fixed frame.

[0012] As a further solution of the present invention: a transverse groove is provided on the movable plate, a vertical rod is fixedly arranged on the fixed frame, the vertical rod is slidably connected to the transverse groove, a return spring is fixedly arranged between the vertical rod and the movable plate, a connecting rod is fixedly arranged on one side of the recording plate, a connecting plate is fixedly arranged on one end of the connecting rod away from the recording plate, notches are provided on both sides of the connecting plate, and the movable rod and one end of the transverse rod are movably abutted against the notch.

[0013] As a further solution of the present invention: the cylinder is provided with a groove on one side of the ring, and movable frames are axially symmetrically slidably arranged on both sides of the groove, a clamping plate is fixedly arranged on one side of the movable frame, and a rotating plate is movably arranged on the side of the movable frame away from the clamping plate, and a square block is rotatably connected to one end of the rotating plate away from the movable frame, and the square block is slidably connected to the groove.

[0014] As a further solution of the present invention: a limiting frame is fixedly provided at one end of the square block away from the rotating plate, the limiting frame is slidably connected to the slot, a rotating rod is movably provided on one side of the limiting frame and the two are threadedly connected, a positioning gear is fixedly provided on the end of the rotating rod, a positioning rack is fixedly provided on one side of the movable rack, and the positioning rack is meshed with the positioning gear for transmission.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) Through the clever coordination of the arc plate, arc groove, round rod and ring, the ring and the recording pen are driven to rotate synchronously during the airbag inflation process, so that the trajectory is accurately depicted on the recording board, providing an intuitive way for operators to observe and analyze data; (2) With the coordinated work of the movable rod, positioning rod, card plate, movable plate, transverse rod and reset rod, it is ensured that the recording board can effectively contact the wiping pad to remove surface impurities when approaching the cylinder, thus optimizing the data collection environment. At the same time, it can cleverly avoid the wiping pad during the evacuation process, thus protecting the recorded information from accidental interference; (3) The combined design of the mobile frame, rotating plate and clamping plate is intended to provide reliable fixed support for the recording board before data recording, ensure the stability of the recording board during the entire measurement process, and improve data accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the middle.

[0018] Figure 3 It is a structural schematic diagram of the horizontal plate in the present invention.

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of part B in the middle.

[0020] Figure 5 It is a schematic diagram of the structure of a single cylinder in the present invention.

[0021] Figure 6 It is a schematic diagram of the positional relationship between the wiping pad and the recording pen in the present invention.

[0022] Figure 7 It is a schematic diagram of the structure of the positioning rack in the present invention.

[0023] Figure 8 It is a schematic structural diagram of the positioning spring in the present invention.

[0024] Fig. 9 It is a schematic diagram of the positional relationship between the limiting rod and the limiting plate in the present invention.

[0025] Fig.10 It is a schematic diagram of the structure of the transverse groove in the present invention.

[0026] Fig.11 It is a schematic diagram of the positional relationship between the inclined plate and the reset rod in the present invention.

[0027] Fig.12 It is a schematic diagram of the structure of the groove in the present invention.

[0028] Fig.13 It is a schematic diagram of the structure of the splint in the present invention.

[0029] In the figure: 1, fixed plate; 2, airbag assembly; 3, positioning plate; 4, moving plate; 5, vertical plate; 6, cylinder; 61, notch; 62, groove; 7, detection component; 71, ring; 72, round rod; 73, recording pen; 74, recording plate; 8, arc plate; 81, arc groove; 9, screw rod; 10, moving block; 11, cross bar; 12, fixed block; 13, movable block; 14, positioning spring; 15, moving rack; 16, rotating gear; 17, cross plate; 18, wiping pad; 19, fixed frame; 20, movable rod; 21, limit plate ; 211, inclined groove; 22, first spring; 23, movable plate; 231, positioning groove; 232, reset groove; 233, transverse groove; 24, positioning rod; 25, clamping plate; 26, inclined plate; 27, transverse rod; 28, reset rod; 29, second spring; 30, vertical rod; 31, reset spring; 32, connecting rod; 33, connecting plate; 331, notch; 34, moving frame; 35, clamping plate; 36, rotating plate; 37, square block; 38, limiting frame; 39, rotating rod; 40, positioning gear; 41, positioning rack; 42, limiting rod. DETAILED DESCRIPTION

[0030] See also Figure 1-Figure 13In an embodiment of the present invention, a multi-point impact detection device for an automobile safety airbag includes a fixed plate 1, an airbag assembly 2 is movably connected to the fixed plate 1, a positioning plate 3 is provided on one side of the fixed plate 1, and a plurality of movable plates 4 are slidably provided on the positioning plate 3, a vertical plate 5 is provided on the side of the positioning plate 3 away from the fixed plate 1, a cylinder 6 is fixedly provided on the side of the vertical plate 5 close to the positioning plate 3, a detection component 7 is provided on one side of the cylinder 6, and an arc plate 8 is fixedly provided on one end of the movable plate 4 close to the vertical plate 5, and the arc plate 8 and the arc plate 8 are connected to each other. The cylinder 6 is slidably connected and is transmission-connected with the detection component 7; the airbag assembly 2 to be detected is snap-fitted and installed on the fixed plate 1, triggering the airbag assembly 2 to expand, thereby pushing the movable plate 4 to move relative to the positioning plate 3, and the movement of the movable plate 4 in the direction away from the fixed plate 1 will drive the arc plate 8 to move along the cylinder 6. During the movement of the arc plate 8 along the cylinder 6, the detection component 7 will be driven to work, thereby recording the moving distance of the moving rod, and the vertical plate 5 provides support for the cylinder 6. The movement of multiple movable plates 4 can detect the expansion performance of the airbag assembly 2 at multiple points.

[0031] See also Figure 2-Figure 5 As shown, in this embodiment, preferably, the detection component 7 includes a ring 71, which is movably sleeved on the outside of the cylinder 6, and a plurality of the rings 71 are provided. An arc groove 81 is provided on the outside of the arc plate 8, and a round rod 72 is fixedly provided on the inner side of each of the rings 71. The round rod 72 slides in contact with the arc groove 81, and a recording pen 73 is fixedly provided on one side of the ring 71. A recording plate 74 is provided on one side of the cylinder 6, and the recording pen 73 is movably abutted against the recording plate 74; the movement of the movable plate 4 will drive the arc plate 8 to move along the cylinder 6, and during the movement of the arc plate 8, the movement of the arc groove 81 will drive the plurality of round rods 72 and the rings 71 to rotate around the cylinder. 6 is rotated 90 degrees. The rotation of the ring 71 will drive the recording pen 73 to rotate. The rotation of the recording pen 73 will leave a rotation track on the recording board 74 on one side. The rotation amplitude of the ring 71 can be observed more clearly through the rotation track. The rotation amplitude of the ring 71 can reflect the moving distance of the moving rod along the cylinder 6. This step converts the moving distance of the moving rod into the rotation amplitude of the ring 71. The operator is clearer when recording the data. The track of the recording pen 73 on the recording board 74 is an arc. Analysis of the arc can better study the performance of the airbag. The track mark left by the marker on the recording board 74 is permanent and can be used as an important basis for subsequent data analysis and comparison.

[0032] See also Figure 4-Figure 8As shown, in the present embodiment, preferably, a notch 61 is provided at the center of the cylinder 6, a screw rod 9 is rotatably provided in the notch 61, one end of the screw rod 9 movably passes through the cylinder 6 and a moving block 10 is movably sleeved on the outer side of the end, a cross bar 11 is fixedly provided on one side of the moving block 10, and the end of the cross bar 11 movably passes through the side wall of the cylinder 6 away from the moving block 10, a fixed block 12 is fixedly provided on one side of the moving block 10, a movable block 13 is slidably provided in the fixed block 12, and the end of the movable block 13 away from the fixed block 12 is fixedly connected to the recording plate 74, and a positioning spring 14 is fixedly connected between the movable block 13 and the fixed block 12; before the airbag is inflated, the recording plate 74 is not aligned with the recording pen 73, and the recording plate 74 is away from the cylinder 6. After the airbag is inflated, it will drive the movable plate 4 and the arc plate 8 to move, and the arc plate 8 arrives at the circular The screw rod 9 is rotated before the ring 71 is located. The rotation of the screw rod 9 in the groove 61 will drive the moving block 10, the fixed block 12, the movable block 13, the positioning spring 14 and the recording plate 74 to move together in the direction close to the cylinder 6. The screw rod 9 stops rotating after the recording plate 74 reaches the side of the recording pen 73. Then the arc groove 81 of the arc plate 8 will abut against the round rod 72 to drive the ring 71 to rotate 90 degrees. The recording pen 73 leaves a track record on the recording plate 74. The cross bar 11 will also move relative to the cylinder 6 during the movement of the moving block 10. This is to prevent the moving block 10 from rotating with the rotation of the screw rod 9 during the movement. When the airbag becomes deflated, the reverse rotation of the screw rod 9 will drive the recording plate 74 to move away from the cylinder 6 until it moves to the initial position. At this time, the recording plate 74 is located on one side of the cylinder 6, which can make it more convenient for the operator to perform statistical analysis on the data.

[0033] See also Figure 7 As shown, in the present embodiment, preferably, a movable rack 15 is fixedly provided on one side of the arc plate 8, and the movable rack 15 is slidably connected with the slot 61, and a rotating gear 16 is fixedly sleeved on the outer side of the screw rod 9, and the rotating gear 16 is movably arranged in the slot 61, and the movable rack 15 is meshed with the rotating gear 16 for transmission; when the airbag is inflated, the arc plate 8 will move along the cylinder 6, and the movable rack 15 will be driven to move during the movement, and the movable rack 15 will first mesh with the rotating gear 16 to drive the rotating gear 16 to rotate, and the rotation of the rotating gear 16 will drive the screw rod 9 to rotate, and the rotation of the screw rod 9 will drive the recording plate 74 to move to the side of the recording pen 73 to facilitate the recording of the track, and then the movable rack 15 will be disengaged from the rotating gear 16, and then the arc groove 81 of the arc plate 8 will contact the round rod 72, thereby driving the ring 71 and the recording pen 73 to rotate, thereby leaving a track on the recording plate 74.

[0034] See also Figure 1 , Figure 3 and Figure 5-Figure 6As shown, in the present embodiment, preferably, a transverse plate 17 is fixedly provided on the positioning plate 3, and a plurality of wiping pads 18 are fixedly provided at the bottom of the transverse plate 17, the lateral distance between the wiping pad 18 and the recording plate 74 is greater than the lateral distance between the recording pen 73 and the recording plate 74, and the wiping pad 18 is movably abutted against the recording plate 74; when the airbag expands, the movable block 13 and the recording plate 74 are pulled in a direction away from the fixed block 12, and the positioning spring 14 is in a stretched state. At this time, the recording plate 74 is flush with the wiping pad 18, and the recording plate 74 will abut against the wiping pad 18 during the movement of the recording plate 74 in the direction close to the cylinder 6, and the wiping pad 18 can erase foreign matter on the recording plate 74 (such as dust or the track left by the recording pen 73 on it in the last detection), and after the recording plate 74 as a whole is in contact with the wiping pad 18, the force applied to the recording plate 74 is released, and under the action of the positioning spring 14 The movable block 13 and the recording plate 74 will be driven to move toward the fixed block 12 so that the recording plate 74 is flush with the recording pen 73, and the recording plate 74 will continue to be moved to the side of the recording pen 73. Then the arc groove 81 will contact the round rod 72 to drive the ring 71 to rotate, so that the recording pen 73 leaves a track on the recording plate 74. The horizontal plate 17 provides support for the wiping pad 18. When the airbag is inflated, the recording plate 74 is moved away from the cylinder 6. At this time, the recording plate 74 is not flush with the wiping pad 18. During the movement, the wiping pad 18 will not contact the recording plate 74 to avoid the wiping pad 18 causing "destruction" to the track data on the recording plate 74. There also needs to be a certain horizontal distance between the wiping pad 18 and the recording pen 73, that is, the slender part at the bottom of the recording plate 74 needs to move a certain distance in the direction of the recording pen 73 after the wiping pad 18 is released from contact, and no collision with the recording pen 73 occurs during this process.

[0035] See also Figure 9-10As shown, in this embodiment, preferably, a plurality of fixed frames 19 are fixedly arranged at the bottom of the horizontal plate 17 on one side of the wiping pad 18, and a movable rod 20 is arranged on one side of the fixed frame 19 for horizontal movement, and a limit plate 21 is fixedly arranged at one end of the movable rod 20 close to the recording plate 74, and an inclined groove 211 is opened at one end of the limit plate 21 away from the wiping pad 18, and a first spring 22 is fixedly arranged between the movable rod 20 and the inner wall of the fixed frame 19, and a limit rod is fixedly arranged on the top of the recording plate 74 42, the limit rod 42 is movably abutted against the inclined groove 211; when the recording plate 74 moves toward the direction close to the cylinder 6, the limit rod 42 will be driven to move together. At this time, the end of the limit rod 42 away from the recording plate 74 is flush with the high part of the inclined groove 211, and the movable rod 20 is moved toward the direction close to the limit rod 42. The movable rod 20 will drive the limit plate 21 to move toward the direction close to the limit rod 42 until the low part of the inclined groove 211 is flush with the limit rod 42, and then the movable rod 20 is stopped and kept in this state. In this process, the pressure The first spring 22 is compressed, and then the recording plate 74 moves along the lower part of the inclined slot 211 to the higher part. In this process, the limiting rod 42 and the recording plate 74 are driven to move toward the direction close to the wiping pad 18 until the recording plate 74 is flush with the wiping pad 18. In this process, the positioning spring 14 is stretched, and then the limiting rod 42 moves along the higher part of the inclined slot 211. In this process, the recording plate 74 does not move and abuts against the wiping pad 18 to wipe off dust and other foreign matter on itself. After it is no longer in contact with the wiping pad 18, the force applied to the movable rod 20 is released. Under the action of the first spring 22, the movable rod 20 and the limit plate 21 are driven to move away from the limit rod 42. Due to the loss of the squeezing force of the limit plate 21, the recording plate 74 is driven to move away from the wiping pad 18 under the action of the positioning spring 14 until it is flush with the recording plate 74 and the recording pen 73. Then, the trajectory of the recording plate 74 can be recorded by the recording pen 73, and the fixed frame 19 provides support for the movable rod 20.

[0036] See also Figure 9-11As shown, in this embodiment, preferably, a movable plate 23 is movably provided in the fixed frame 19, and a positioning groove 231 and a reset groove 232 are respectively provided on both sides of the movable plate 23. A positioning rod 24 is fixedly provided at the bottom of the movable rod 20. The movable plate 23 is located in the positioning groove 231 and is fixedly provided with a card plate 25. The positioning rod 24 is slidably connected with the positioning groove 231 and is movably engaged with the card plate 25. The movable plate 23 is located in the reset groove 232 and is fixedly provided with an inclined plate 26. The fixed frame 19 is located above the inclined plate 26 and movably penetrates A transverse rod 27 is provided, and a reset rod 28 is fixedly provided at the bottom of the transverse rod 27. The reset rod 28 is slidably connected to the reset groove 232 and movably abuts against the inclined plate 26. A second spring 29 is fixedly provided between the transverse rod 27 and the inner wall of the fixed frame 19. When the airbag expands, the recording plate 74 will move toward the direction close to the cylinder 6, and the movable rod 20 will first move toward the direction close to the limit rod 42 so that the lower part of the limit plate 21 is flush with the limit rod 42. The movement of the movable rod 20 will also drive the positioning rod 24 to move along the positioning groove 231. During this process, the positioning rod 24 will first slide and fit with the oblique opening set on the card plate 25, thereby driving the card plate 25 and the movable plate 23 to move horizontally along the fixed frame 19 until the positioning rod 24 is no longer in contact with the oblique opening, and then the movable plate 23 and the card plate 25 are moved in the opposite direction to the initial position. At this time, the positioning rod 24 will be engaged with the card plate 25, and the movable rod 20 and the limit plate 21 will remain in a stable state. Then the recording plate 74 will drive the limit rod 42 to abut against the limit plate 21, so that the limit rod 42 and the recording plate 74 move to facilitate abutment with the wiping pad 18. When the recording plate 74 is no longer in contact with the wiping pad 18, , move the transverse rod 27 in the direction close to the limit rod 42, and the transverse rod 27 will drive the reset rod 28 to move along the reset groove 232, which will drive the inclined plate 26 and the movable plate 23 to move. This process will compress the second spring 29, and the movement of the movable plate 23 will drive the clamping plate 25 on the other side to move, so that the clamping plate 25 and the positioning rod 24 are released. Then, under the action of the first spring 22, the limit plate 21 will no longer abut against the limit rod 42, and the recording plate 74 will move in the direction close to the fixed frame 19 so as to be flush with the recording pen 73, which is convenient for the recording pen 73 to record its trajectory.

[0037] See also Figure 10-11As shown, in this embodiment, preferably, a transverse groove 233 is provided on the movable plate 23, a vertical rod 30 is fixedly provided on the fixed frame 19, the vertical rod 30 is slidably connected to the transverse groove 233, a return spring 31 is fixedly provided between the vertical rod 30 and the movable plate 23, a connecting rod 32 is fixedly provided on one side of the recording plate 74, a connecting plate 33 is fixedly provided on one end of the connecting rod 32 away from the recording plate 74, notches 331 are provided on both sides of the connecting plate 33, and one end of the movable rod 20 and the transverse rod 27 are both connected to the notch 331. Active abutment; in the initial state, the first spring 22 and the second spring 29 are both in a normal expansion and contraction state. When the airbag expands, the recording plate 74 moves toward the direction close to the cylinder 6. The movement of the recording plate 74 drives the connecting rod 32 and the connecting plate 33 to abut against the active rod 20 first. The notch 331 of the connecting plate 33 abuts against the active rod 20, which drives the active rod 20 to move toward the direction close to the limit rod 42, so that the positioning rod 24 abuts against the card plate 25. During the sliding process along the oblique opening on the card plate 25, the card plate 25 and the active plate 23 are driven to move. In this process, the reset spring 31 is stretched, and the horizontal The groove 233 is to prevent the movable plate 23 from colliding with the vertical rod 30 during the movement. When the positioning rod 24 is no longer in contact with the oblique opening of the card plate 25, the movable plate 23 and the card plate 25 are driven to move to the initial position under the action of the return spring 31, so that the card plate 25 is engaged with the positioning rod 24. In this way, the limit rod 42 can be abutted against the limit plate 21 during the movement of the recording plate 74. Subsequently, when the recording plate 74 is no longer in contact with the wiping pad 18, the notch 331 of the connecting plate 33 is abutted against the transverse rod 27, so that the transverse rod 27 moves toward the direction close to the limit rod 42. The movement of the transverse rod 27 will drive the reset rod 28 to move and abut against the inclined plate 26, driving the inclined plate 26, the movable plate 23 and the card plate 25 to move so that the card plate 25 and the positioning rod 24 are released. Under the action of the first spring 22, the limit plate 21 will be driven to move in the opposite direction to the initial position, so that the recording plate 74 can also move to the initial position, which is convenient for the recording pen 73 to record its trajectory. In addition, during the return process of the recording plate 74, the limit rod 42 will not abut against the limit plate 21, thereby avoiding contact with the wiping pad 18 and ensuring that the trajectory on the recording plate 74 is not "destroyed".

[0038] See also Figure 12-13As shown, in the present embodiment, preferably, the cylinder 6 is provided with a groove 62 on one side of the circular ring 71, and movable frames 34 are axially symmetrically slidably arranged on both sides of the groove 62, and a clamping plate 35 is fixedly arranged on one side of the movable frame 34, and a rotating plate 36 is movably arranged on the side of the movable frame 34 away from the clamping plate 35, and a square block 37 is rotatably connected to the end of the rotating plate 36 away from the movable frame 34, and the square block 37 is slidably connected to the groove 62; during the meshing process of the movable rack 15 and the rotating gear 16, the recording plate 74 will be driven to move in the direction close to the cylinder 6, and the bottom of the recording plate 74 will be located between the two clamping plates 35 after the recording plate 74 stops moving, and the square block 37 will be moved in the direction away from the recording plate 74, and the movement of the square block 37 in the groove 62 will drive the two rotating plates 36 to rotate so that the two movable frames 34 move in the direction close to each other, and the movable frame 34 will drive the two clamping plates 35 to approach each other so as to clamp and fix the recording plate 74, so that the recording plate 74 can remain stable when the recording pen 73 slides on the recording plate 74.

[0039] See also Figure 7 and Fig.13 As shown, in this embodiment, preferably, a limiting frame 38 is fixedly provided at one end of the square block 37 away from the rotating plate 36, and the limiting frame 38 is slidably connected to the notch 61. A rotating rod 39 is movably provided on one side of the limiting frame 38 and the two are threadedly connected. A positioning gear 40 is fixedly provided at the end of the rotating rod 39, and a positioning rack 41 is fixedly provided on one side of the moving rack 15, and the positioning rack 41 is meshed with the positioning gear 40 for transmission; during the meshing process of the moving rack 15 and the rotating gear 16, the recording plate 74 will be driven to move closer to the cylinder 6. When the moving rack 15 and the rotating gear 16 are no longer in contact, the arc plate 8 continues to move, which will cause the positioning rack 41 to mesh with the positioning gear 40, thereby driving the positioning gear 40 and the rotating rod 39 to rotate. Since the rotating rod 39 is threadedly connected to the limit frame 38, the rotation of the rotating rod 39 will drive the limit frame 38 to move toward the direction close to the positioning gear 40, thereby moving the square block 37, and finally achieving the effect of the clamping plate 35 clamping the recording plate 74. Subsequently, the movement of the arc plate 8 will drive the ring 71 and the recording pen 73 to rotate through the arc groove 81.

[0040] The working principle of the present invention is: the airbag assembly 2 to be detected is clamped and installed on the fixed plate 1, and the airbag assembly 2 is triggered to expand, thereby pushing the movable plate 4 to move relative to the positioning plate 3. The movable plate 4 moves in the direction away from the fixed plate 1, which will drive the arc plate 8 to move along the cylinder 6. During the movement, the movable rack 15 will be driven to move. The movable rack 15 will first mesh with the rotating gear 16 to drive the rotating gear 16 to rotate. The rotation of the rotating gear 16 will drive the screw rod 9 to rotate. The rotation of the screw rod 9 will drive the recording plate 74 to move in the direction close to the cylinder 6. The movement of the recording plate 74 will drive the connecting rod 32 and the connecting plate 33 to abut against the movable rod 20 first. The notch 331 of the connecting plate 33 abuts against the movable rod 20, which will drive the movable rod 20 to approach the limit. The movement of the rod 42 in the direction causes the positioning rod 24 to abut against the card plate 25, and the card plate 25 and the movable plate 23 are driven to move during the sliding process along the oblique opening on the card plate 25. During this process, the return spring 31 is stretched. The transverse groove 233 is to prevent the movable plate 23 from colliding with the vertical rod 30 during the movement of the vertical rod 30. When the positioning rod 24 and the oblique opening of the card plate 25 are no longer in contact, the return spring 31 will drive the movable plate 23 and the card plate 25 to move to the initial position, so that the card plate 25 is engaged with the positioning rod 24. In this way, it can be ensured that the limit rod 42 can abut against the limit plate 21 during the movement of the recording plate 74, and can drive the limit rod 42 and the recording plate 74 to be flush with the wiping pad 18, and the wiping pad 18 can remove foreign matter (such as dust or the last The traces left by the recording pen 73 during the first detection are erased, and then when the recording plate 74 is no longer in contact with the wiping pad 18, the notch 331 of the connecting plate 33 will abut against the transverse rod 27, causing the transverse rod 27 to move in the direction close to the limit rod 42. The movement of the transverse rod 27 will drive the reset rod 28 to move and abut against the inclined plate 26, driving the inclined plate 26, the movable plate 23 and the card plate 25 to move so that the card plate 25 and the positioning rod 24 are released. Under the action of the first spring 22, the limit plate 21 will be driven to move in the opposite direction to the initial position, so that the recording plate 74 can also be moved to the initial position, which is convenient for the recording pen 73 to record its trajectory. In addition, the limit rod 42 will not abut against the limit plate 21 during the return process of the recording plate 74, thus avoiding contact with the wiping pad 18. The pad 18 is in contact to ensure that the track on the recording plate 74 is not "destroyed". The moving rack 15 and the rotating gear 16 are engaged, which will drive the recording plate 74 to move in the direction close to the cylinder 6. After the moving rack 15 and the rotating gear 16 are no longer in contact, the arc plate 8 continues to move, which will cause the positioning rack 41 to engage with the positioning gear 40, thereby driving the positioning gear 40 and the rotating rod 39 to rotate. Since the rotating rod 39 is threadedly connected to the limit frame 38, the rotation of the rotating rod 39 will drive the limit frame 38 to move in the direction close to the positioning gear 40, thereby moving the square block 37, and finally achieving the effect of the clamping plate 35 clamping the recording plate 74. Subsequently, the movement of the arc plate 8 will drive the ring 71 and the recording pen 73 to rotate through the arc groove 81.

Claims

1. A multi-point impact detection device for an automobile airbag, comprising a fixing plate (1), characterized in that: The fixed plate (1) is provided with an airbag assembly (2) in a movable manner, a positioning plate (3) is provided on one side of the fixed plate (1), a plurality of movable plates (4) are slidably provided on the positioning plate (3), a vertical plate (5) is provided on the side of the positioning plate (3) away from the fixed plate (1), a cylinder (6) is fixedly provided on the side of the vertical plate (5) close to the positioning plate (3), a detection component (7) is provided on one side of the cylinder (6), and an arc plate (8) is fixedly provided on one end of the movable plate (4) close to the vertical plate (5), the arc plate (8) is slidably connected to the cylinder (6) and is transmission-connected to the detection component (7).

2. The automobile airbag multi-point impact detection device according to claim 1, characterized in that: The detection component (7) comprises a circular ring (71), wherein the circular ring (71) is movably sleeved on the outer side of the cylinder (6), and a plurality of the circular rings (71) are provided. An arc groove (81) is provided on the outer side of the arc plate (8), and a round rod (72) is fixedly provided on the inner side of each circular ring (71), and the round rod (72) is slidably fitted with the arc groove (81). A recording pen (73) is fixedly provided on one side of the circular ring (71), and a recording plate (74) is provided on one side of the cylinder (6), and the recording pen (73) is movably abutted against the recording plate (74).

3. The automobile airbag multi-point impact detection device according to claim 2, characterized in that: A notch (61) is provided at the center of the cylinder (6), a screw rod (9) is rotatably arranged in the notch (61), one end of the screw rod (9) movably passes through the cylinder (6) and a moving block (10) is movably sleeved on the outer side of the end, a cross bar (11) is fixedly arranged on one side of the moving block (10), one end of the cross bar (11) away from the moving block (10) movably passes through the side wall of the cylinder (6), a fixed block (12) is fixedly arranged on one side of the moving block (10), a movable block (13) is slidably arranged in the fixed block (12), one end of the movable block (13) away from the fixed block (12) is fixedly connected to the recording plate (74), and a positioning spring (14) is fixedly connected between the movable block (13) and the fixed block (12).

4. The automobile airbag multi-point impact detection device according to claim 3, characterized in that: A movable rack (15) is fixedly arranged on one side of the arc-shaped plate (8), and the movable rack (15) is slidably connected to the notch (61). A rotating gear (16) is fixedly sleeved on the outer side of the screw rod (9), and the rotating gear (16) is movably arranged in the notch (61). The movable rack (15) and the rotating gear (16) are meshed and transmitted.

5. The automobile airbag multi-point impact detection device according to claim 3, characterized in that: A transverse plate (17) is fixedly arranged on the positioning plate (3), and a plurality of wiping pads (18) are fixedly arranged at the bottom of the transverse plate (17). The lateral distance between the wiping pad (18) and the recording plate (74) is greater than the lateral distance between the recording pen (73) and the recording plate (74), and the wiping pad (18) is movably abutted against the recording plate (74).

6. The automobile airbag multi-point impact detection device according to claim 5, characterized in that: A plurality of fixed frames (19) are fixedly arranged at the bottom of the transverse plate (17) on one side of the wiping pad (18); a movable rod (20) is movably arranged on one side of the fixed frame (19) in a transverse direction; a limit plate (21) is fixedly arranged at one end of the movable rod (20) close to the recording plate (74); an inclined groove (211) is provided at one end of the limit plate (21) away from the wiping pad (18); a first spring (22) is fixedly arranged between the movable rod (20) and the inner wall of the fixed frame (19); a limit rod (42) is fixedly arranged at the top of the recording plate (74); and the limit rod (42) is movably abutted against the inclined groove (211).

7. The automobile airbag multi-point impact detection device according to claim 6, characterized in that: A movable plate (23) is movably arranged in the fixed frame (19), and positioning grooves (231) and reset grooves (232) are respectively provided on both sides of the movable plate (23). A positioning rod (24) is fixedly arranged at the bottom of the movable rod (20), and a clamping plate (25) is fixedly arranged in the positioning groove (231) of the movable plate (23). The positioning rod (24) is slidably connected to the positioning groove (231) and is movably clamped to the clamping plate (25). The movable plate (23 ) is fixedly provided with an inclined plate (26) in the reset groove (232), the fixed frame (19) is located above the inclined plate (26) and is movably provided with a transverse rod (27) passing through, a reset rod (28) is fixedly provided at the bottom of the transverse rod (27), the reset rod (28) is slidably connected to the reset groove (232) and movably abuts against the inclined plate (26), and a second spring (29) is fixedly provided between the transverse rod (27) and the inner wall of the fixed frame (19).

8. The automobile airbag multi-point impact detection device according to claim 7, characterized in that: The movable plate (23) is provided with a transverse groove (233), the fixed frame (19) is fixedly provided with a vertical rod (30), the vertical rod (30) is slidably connected to the transverse groove (233), a return spring (31) is fixedly provided between the vertical rod (30) and the movable plate (23), a connecting rod (32) is fixedly provided on one side of the recording plate (74), a connecting plate (33) is fixedly provided at one end of the connecting rod (32) away from the recording plate (74), both sides of the connecting plate (33) are provided with notches (331), and one end of the movable rod (20) and the transverse rod (27) are movably abutted against the notch (331).

9. The automobile airbag multi-point impact detection device according to claim 3, characterized in that: The cylinder (6) is provided with a groove (62) on one side of the ring (71), and a movable frame (34) is axially symmetrically slidably arranged on both sides of the groove (62), a clamping plate (35) is fixedly arranged on one side of the movable frame (34), and a rotating plate (36) is movably arranged on the side of the movable frame (34) away from the clamping plate (35), and a square block (37) is rotatably connected to one end of the rotating plate (36) away from the movable frame (34), and the square block (37) is slidably connected to the groove (62).

10. A vehicle airbag multi-point impact detection device according to claim 4 or 9, characterized in that: A limiting frame (38) is fixedly provided at one end of the square block (37) away from the rotating plate (36), and the limiting frame (38) is slidably connected to the notch (61). A rotating rod (39) is movably provided on one side of the limiting frame (38), and the two are threadedly connected. A positioning gear (40) is fixedly provided at the end of the rotating rod (39), and a positioning rack (41) is fixedly provided on one side of the movable rack (15), and the positioning rack (41) is meshed with the positioning gear (40) for transmission.

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