Automobile sensor with anti-dropping mounting structure

Abstract

The utility model relates to the technical field of automobile sensor, disclose a car sensor with prevent installation structure of falling off, including mounting seat, the sensor body is arranged in the mounting seat inner wall, the sensor body lower surface is fixedly connected with fixed block, the mounting seat with fixed block between is provided with limit component, the limit component includes inclined block no.

Description

Technical Field

[0001] This utility model relates to the field of automotive sensor technology, and in particular to an automotive sensor with an anti-detachment mounting structure. Background Technology

[0002] The automotive airbag system is a core component of the modern vehicle's passive safety system. Door pressure sensors, as key sensing elements, are used to detect the impact pressure on the door in real time and trigger the airbag deployment in the event of a collision. To ensure the reliability and signal accuracy of the sensor in complex driving environments, the stability of its mounting structure is crucial. Automotive airbag door pressure sensors with anti-detachment mounting structures aim to improve the sensor's installation firmness and positional consistency under vibration, impact, and other conditions, thereby ensuring the accuracy of signal detection and the timeliness of system response.

[0003] In the existing technology, automotive door pressure sensors are mostly fixed by direct bolt fastening or snap-on mounting structure. The sensor base is connected to the internal structure of the door by screws, and the sensor housing is designed with a positioning flange to match the door mounting hole. Alternatively, plastic snaps are used to elastically deform and press into the sheet metal hole of the door, relying on the material's elasticity to achieve fixation.

[0004] However, existing installation structures are insufficient to effectively address the issues of circumferential positioning or vibration-induced loosening of the sensor body. For example, snap-on installation structures rely solely on the engagement of elastic claws with locking holes for fixation. The lack of a continuous pre-tightening force between the claws and the locking holes means that when a car travels on bumpy roads or when the car door is exposed to prolonged vibration, gaps can easily form between the claws and the locking holes due to vibration and friction, leading to circumferential displacement. Simultaneously, vibration continuously weakens the engaging force of the claws, potentially causing them to detach from the locking holes, resulting in sensor loosening and consequently affecting its positional stability and signal detection accuracy. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an automotive sensor with an anti-detachment mounting structure, which aims to improve the problem that existing mounting structures cannot effectively solve the problem of circumferential limiting or vibration loosening of the sensor body, thus affecting its positional stability and signal detection accuracy.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automotive sensor with an anti-detachment mounting structure, including a mounting base, a sensor body disposed on the inner wall of the mounting base, a fixing block fixedly connected to the lower surface of the sensor body, and a limit component disposed between the mounting base and the fixing block; The limiting component includes a first inclined block and a second inclined block. The first inclined block is evenly distributed around the inner wall of the mounting base, and the second inclined block is evenly distributed around the outer wall of the fixing block. One side of the outer wall of the first inclined block is in contact with one side of the outer wall of the second inclined block. A rotating plate is rotatably connected to the inner wall of the mounting base. A locking block is fixedly connected to the lower surface of the fixing block. A fixing column is rotatably connected to the inner wall of the rotating plate. A torsion spring is sleeved on the outer wall of the fixing column. One end of the torsion spring is fixedly connected to the lower surface of the rotating plate, and the other end of the torsion spring is fixedly connected to the bottom of the inner wall of the mounting base.

[0007] Furthermore, the outer wall of the card block is slidably connected to the inner wall of the rotating plate, and the lower surface of the fixing column is fixedly connected to the bottom of the inner wall of the mounting base.

[0008] Furthermore, a rotating shaft is fixedly connected to the inner wall of the mounting base, and mounting holes are symmetrically arranged on the upper surface of the mounting base. A through hole is opened on one side of the outer wall of the mounting base, and a rotating plate is rotatably connected to the outer wall of the rotating shaft.

[0009] Furthermore, a cover plate is fixedly connected to the upper surface of the rotating plate, and a pressure ring is fixedly connected to the lower surface of the cover plate. The lower surface of the pressure ring is in contact with the upper surface of the sensor body.

[0010] Furthermore, a plug rod is fixedly connected to the lower surface of the cover plate, and a slot that mates with the plug rod is provided on the upper surface of the mounting base.

[0011] Furthermore, a second rotating shaft is fixedly connected to the inner wall of the slot, and a locking rod is rotatably connected to the outer wall of the second rotating shaft, with one end of the locking rod fitting against the inner wall of the insertion rod.

[0012] Furthermore, a sliding rod is fixedly connected to the other end of the lever, and the outer wall of the sliding rod is slidably connected within the slot.

[0013] Furthermore, a compression spring is provided inside the slot, with one end of the compression spring fixedly connected to one side of the outer wall of the card rod and the other end of the compression spring fixedly connected to one side of the inner wall of the slot.

[0014] This utility model has the following beneficial effects: 1. In this utility model, by cooperating with the sensor body, the fixing block and the mounting base, rotating the sensor body causes the locking block to drive the rotating plate to rotate on the fixing column and store energy in the torsion spring. After being fully inserted, the torsion spring rebounds, causing the first and second inclined blocks to engage to form a circumferential limit. The torsion spring continuously provides pre-tightening force to keep the two tightly attached. This can effectively achieve circumferential limit and anti-displacement of the sensor body, and resist the loosening problem caused by vibration during vehicle operation, ensuring the positional stability of the sensor body during operation, thereby improving the practicality of the device.

[0015] 2. In this utility model, the cover plate is closed by rotating around the first pivot, and the pressure ring is pressed against the sensor body to achieve axial clamping. The insertion rod is inserted into the slot, which pushes the rod to rotate around the second pivot and compresses the compression spring. After full insertion, the compression spring rebounds, causing the rod to lock into the insertion rod groove to complete the quick locking and prevent the cover plate from loosening. When disassembling, pushing the slide rod can release the restriction and open the cover plate, which facilitates the replacement or maintenance of the sensor body, thereby improving the efficiency and reliability of disassembly and maintenance. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the automotive sensor with an anti-detachment mounting structure proposed in this utility model; Figure 2 This is a schematic diagram of the fixing block portion of the automotive sensor with an anti-detachment mounting structure proposed in this utility model. Figure 3 This is a schematic diagram of the rotating plate portion of the automotive sensor with an anti-detachment mounting structure proposed in this utility model. Figure 4 This is a schematic diagram of the torsion spring portion of the automotive sensor with an anti-detachment mounting structure proposed in this utility model. Figure 5 This is a schematic diagram of the cover plate portion of the automotive sensor with an anti-detachment mounting structure proposed in this utility model. Figure 6 for Figure 4 Enlarged diagram of point A in the diagram.

[0017] Legend: 1. Mounting base; 2. Mounting hole; 3. Through hole; 4. Sensor body; 5. Inclined block one; 6. Fixing block; 7. Inclined block two; 8. Locking block; 9. Rotating plate; 10. Torsion spring; 11. Fixing column; 12. Rotating shaft one; 13. Rotating plate; 14. Cover plate; 15. Pressure ring; 16. Insert rod; 17. Slot; 18. Rotating shaft two; 19. Locking rod; 20. Slide rod; 21. Compression spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figure 1 - Figure 4An embodiment of this utility model provides an automotive sensor with an anti-detachment mounting structure, including a mounting base 1 for supporting the sensor body 4 and other auxiliary fixing structures. The upper surface of the mounting base 1 is symmetrically provided with mounting holes 2 for fixing the mounting base 1 to a designated position on the vehicle by fasteners. A through hole 3 is opened on one side of the outer wall of the mounting base 1 for the wire harness of the sensor body 4 to pass through. The inner wall of the mounting base 1 is provided with the sensor body 4. The sensor body 4 is used to quickly detect the instantaneous pressure change in the door cavity when the vehicle is involved in a side collision and transmit the signal to the airbag control unit, thereby triggering the side airbag to deploy in time. This is a well-known sensing technology in automotive passive safety systems, which will not be described in detail here. A fixing block 6 is fixedly connected to the lower surface of the sensor body 4, and a limit component is provided between the mounting base 1 and the fixing block 6. The limiting assembly includes inclined block 5 and inclined block 7. Inclined block 5 is evenly distributed around the inner wall of the mounting base 1, and inclined block 7 is evenly distributed around the outer wall of the fixing block 6. One side of the outer wall of inclined block 5 is in contact with one side of the outer wall of inclined block 7. A rotating plate 9 is rotatably connected to the inner wall of the mounting base 1. A locking block 8 is fixedly connected to the lower surface of the fixing block 6. The outer wall of the locking block 8 is slidably connected to the inner wall of the rotating plate 9. A fixing post 11 for providing a rotation fulcrum for the rotating plate 9 is rotatably connected to the inner wall of the rotating plate 9. The lower surface of the fixing post 11 is fixedly connected to the bottom of the inner wall of the mounting base 1. A torsion spring 10 is sleeved on the outer wall of the fixing post 11. The torsion spring 10 is made of elastic metal and its function is to store and release torque. When the rotating plate 9 rotates, it is torsionally stored. When it resets, it releases the elastic force to drive the rotating plate 9 to reset. One end of the torsion spring 10 is fixedly connected to the lower surface of the rotating plate 9, and the other end of the torsion spring 10 is fixedly connected to the bottom of the inner wall of the mounting base 1.

[0020] Specifically, the mounting base 1 is stably installed in the designated position of the car through the mounting hole 2, providing basic support and positioning reference for the sensor. The locking block 8 rotates in conjunction with the rotating plate 9. When the sensor body 4 rotates, the locking block 8 drives the rotating plate 9 to rotate around the fixed column 11, achieving the effect of torsion spring 10 torsion and storing energy. The second inclined block 7 fits and engages with the first inclined block 5. When the torsion spring 10 rebounds and drives the rotating plate 9 to reset, the two are in close contact to form a circumferential limit, achieving the effect of restricting the circumferential movement of the sensor body 4 together with the first inclined block 5. At the same time, under the pre-tightening force of the torsion spring 10, it remains in contact and resists loosening caused by vibration.

[0021] Reference Figure 3 - Figure 6A rotating shaft 12, providing a fulcrum for the rotation of the rotating plate 13, is fixedly connected to the inner wall of the mounting base 1. The rotating plate 13 is rotatably connected to the outer wall of the rotating shaft 12. A cover plate 14 is fixedly connected to the upper surface of the rotating plate 13. The cover plate 14 achieves axial fixation and locking of the sensor body 4 through a pressure ring 15 and a plug rod 16. A pressure ring 15 is fixedly connected to the lower surface of the cover plate 14. The pressure ring 15 is used to fit against the upper surface of the sensor body 4 when the cover plate 14 is closed, thereby applying axial pressure to the sensor body 4 and achieving axial clamping and fixing. The lower surface of the pressure ring 15 fits against the upper surface of the sensor body 4. A plug rod 16 is fixedly connected to the lower surface of the cover plate 14. The mounting base 1 has a groove for engaging with the end of the rod 19. The upper surface of the mounting base 1 has a slot 17 that engages with the rod 16. A rotating shaft 18 that provides a fulcrum for the rotation of the rod 19 is fixedly connected to the inner wall of the slot 17. The rod 19 is rotatably connected to the outer wall of the rotating shaft 18. One end of the rod 19 is in contact with the inner wall of the rod 16. The other end of the rod 19 is fixedly connected to a sliding rod 20. The outer wall of the sliding rod 20 is slidably connected inside the slot 17. A compression spring 21 is provided inside the slot 17. One end of the compression spring 21 is fixedly connected to one side of the outer wall of the rod 19, and the other end of the compression spring 21 is fixedly connected to one side of the inner wall of the slot 17.

[0022] Specifically, the rotating shaft 12 rotates in conjunction with the rotating plate 13. When the rotating plate 13 rotates around it, it drives the cover plate 14 to open and close, achieving the effect of allowing the cover plate 14 to be flipped closed or opened. The cover plate 14, together with the pressure ring 15 and the insertion rod 16, achieves axial fixation and locking of the sensor body 4. When the cover plate 14 closes around the rotating shaft 12, it presses the sensor body 4 tightly through the pressure ring 15, and at the same time locks with the slot 17 through the insertion rod 16. When the insertion rod 16 is inserted into the slot 17, it pushes the locking rod 19 to rotate around the rotating shaft 18. After being fully inserted, the locking rod 19 locks into its own groove, achieving the effect of fixing the cover plate 14 and preventing it from loosening. By pushing the slide rod 20, the locking rod 19 is driven to overcome the compression spring 21 and rotate around the rotating shaft 18. At this time, the end of the locking rod 19 disengages from the groove of the insertion rod 16, thereby releasing the lock of the cover plate 14, making it easy to quickly open the cover plate 14 for sensor replacement or maintenance.

[0023] Working principle: When installing the car sensor, first fix the sensor body 4 to the car through the mounting hole 2, then place the sensor body 4 into the mounting base 1, but not completely. Make sure that the first inclined block 5 does not reach the position of the second inclined block 7 on the limiting fixing block 6. At the same time, align the locking block 8 with the corresponding hole in the rotating plate 9. At this time, rotate the sensor body 4 and the fixing block 6 so that the locking block 8 drives the rotating plate 9 to rotate on the fixing post 11. At the same time, the torsion spring 10 is twisted and stored. Then, maintain the torque and further place the sensor body 4 completely into the mounting base 1. At this time, the locking block 8 slides completely into the corresponding hole in the rotating plate 9. The torsion spring 10 rebounds and drives the rotating plate 9 to reset. At this time, the second inclined block 7 and the first inclined block 5 can engage with each other to form a circumferential limit. The torsion spring 10 continuously provides pre-tightening force so that the first inclined block 5 and the second inclined block 7 always keep in contact, realizing the circumferential limit and anti-displacement of the sensor body 4, and can also effectively resist the loosening caused by vibration. Then, pass the wiring harness through the through hole 3 for installation. After the sensor body 4 is installed, rotate the cover plate 14 to close it around the rotating shaft 12 via the rotating plate 13. At this time, the pressure ring 15 under the cover plate 14 is tightly attached to the sensor body 4 to achieve axial compression and fixation. At the same time, the insertion rod 16 is inserted into the slot 17, pushing the locking rod 19 to rotate around the rotating shaft 18 and compressing the compression spring 21. When the insertion rod 16 is fully inserted, the groove on the insertion rod 16 corresponds to the end of the locking rod 19. At this time, the compression spring 21 elastically rebounds, pushing the locking rod 19 into the groove of the insertion rod 16, completing the quick locking of the cover plate 14 and preventing the cover plate 14 from loosening. When it is necessary to disassemble or replace the sensor body 4, push the slide rod 20. The slide rod 20 drives the locking rod 19 to overcome the elastic force of the compression spring 21 and rotate around the rotating shaft 18, releasing the restriction of the locking rod 19 on the insertion rod 16, and then the cover plate 14 can be flipped up. Then, the sensor body 4 can be lifted up for replacement or maintenance.

[0024] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automobile sensor with anti-drop mounting structure, comprising a mounting seat (1), characterized in that: The inner wall of the mounting base (1) is provided with a sensor body (4), and a fixing block (6) is fixedly connected to the lower surface of the sensor body (4). A limit component is provided between the mounting base (1) and the fixing block (6). The limiting component includes a first inclined block (5) and a second inclined block (7). The first inclined block (5) is evenly arranged on the inner wall of the mounting base (1) in a circumferential direction. The second inclined block (7) is evenly arranged on the outer wall of the fixing block (6) in a circumferential direction. One side of the outer wall of the first inclined block (5) is in contact with one side of the outer wall of the second inclined block (7). A rotating plate (9) is rotatably connected to the inner wall of the mounting base (1). A locking block (8) is fixedly connected to the lower surface of the fixing block (6). A fixing column (11) is rotatably connected to the inner wall of the rotating plate (9). A torsion spring (10) is sleeved on the outer wall of the fixing column (11). One end of the torsion spring (10) is fixedly connected to the lower surface of the rotating plate (9), and the other end of the torsion spring (10) is fixedly connected to the bottom of the inner wall of the mounting base (1).

2. The automobile sensor having a detachment-preventing mounting structure according to claim 1, characterized by: The outer wall of the card block (8) is slidably connected to the inner wall of the rotating plate (9), and the lower surface of the fixed column (11) is fixedly connected to the bottom of the inner wall of the mounting base (1).

3. The automobile sensor having a detachment-preventing mounting structure according to claim 1, characterized by: The inner wall of the mounting base (1) is fixedly connected to a rotating shaft (12), and the upper surface of the mounting base (1) is symmetrically provided with mounting holes (2). A through hole (3) is opened on one side of the outer wall of the mounting base (1), and a rotating plate (13) is rotatably connected to the outer wall of the rotating shaft (12).

4. The automobile sensor having a detachment-preventing mounting structure according to claim 3, characterized by: A cover plate (14) is fixedly connected to the upper surface of the rotating plate (13), and a pressure ring (15) is fixedly connected to the lower surface of the cover plate (14). The lower surface of the pressure ring (15) is in contact with the upper surface of the sensor body (4).

5. The automotive sensor with an anti-detachment mounting structure according to claim 4, characterized in that: The cover plate (14) is fixedly connected to the lower surface of the insert rod (16), and the upper surface of the mounting base (1) is provided with a slot (17) that cooperates with the insert rod (16).

6. The automobile sensor having a detachment-preventing mounting structure according to claim 5, characterized by: The inner wall of the slot (17) is fixedly connected to a rotating shaft (18), and the outer wall of the rotating shaft (18) is rotatably connected to a locking rod (19). One end of the locking rod (19) is in contact with the inner wall of the insertion rod (16).

7. The automobile sensor having a detachment-preventing mounting structure according to claim 6, characterized by: The other end of the lever (19) is fixedly connected to a slide rod (20), and the outer wall of the slide rod (20) is slidably connected inside the slot (17).

8. The automobile sensor having a detachment-preventing mounting structure according to claim 6, characterized by: A compression spring (21) is provided inside the slot (17). One end of the compression spring (21) is fixedly connected to one side of the outer wall of the lever (19), and the other end of the compression spring (21) is fixedly connected to one side of the inner wall of the slot (17).

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