Low-decibel lifting vehicle-mounted central control camera module structure

Abstract

A low-decibel lifting vehicle-mounted central control camera module structure disclosed by the present invention comprises an upper shell and a middle shell fixedly arranged at the bottom of the upper shell, a camera is detachably clamped in the bottom of the middle shell, a large flat cable is fixedly arranged at the bottom of the camera, a lower shell is fixedly arranged at the bottom of the middle shell, and the lower shell is fixedly arranged at the bottom of the middle shell. A mounting seat is fixedly arranged at one end of the upper shell, one end of the middle shell and one end of the lower shell, a plurality of screw bodies are embedded among the upper shell, the middle shell and the lower shell in a threaded mode, a circuit board is fixedly arranged at the top of the mounting seat, a plurality of bolts are embedded into the top of the mounting seat in a threaded mode, and a transmission system is detachably and fixedly arranged at the top of the mounting seat through the bolts. One end of the screw cylinder abuts against one of the threaded rings, the threaded rings are prevented from loosening on the threaded rod, the threaded rings are firmly positioned on the threaded rod, the quartered columns are further reinforced, the four quartered columns are firmly fixed in the threaded holes, and the upper shell, the middle shell and the lower shell are firmly fixed together.

Description

Technical Field

[0001] The present invention relates to the technical field of camera modules, and particularly to a low-decibel lifting vehicle-mounted central control camera module structure. Background Art

[0002] In the wave of automotive intelligence, vehicle-mounted camera modules have become indispensable key components in vehicles. They are widely used in multiple important fields such as reverse imaging, driving record, driver assistance, and in-vehicle monitoring, providing rich and crucial visual information for drivers and greatly enhancing driving safety and convenience. However, in the existing low-decibel lifting vehicle-mounted central control camera module structure, when the vehicle-mounted camera module is working, especially the structure involving lifting movement, it often generates relatively obvious noise. In the relatively enclosed and quiet in-vehicle environment, the noise is easily detected by the driver, which has a negative impact on the user experience. In addition, there is a problem that the friction between the screw and the inner wall of the threaded hole is insufficient, and due to vibration, the screw loosens from the threaded hole, resulting in the shell being not firmly fixed. Therefore, a low-decibel lifting vehicle-mounted central control camera module structure is needed. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the existing structure of the lifting movement, which often generates relatively obvious noise, and vibration causes the screw to loosen from the threaded hole and the shell is not firmly fixed, so as to propose a low-decibel lifting vehicle-mounted central control camera module structure.

[0004] To achieve the above purpose, the present invention adopts the following technical scheme: A low-decibel lifting vehicle-mounted central control camera module structure includes an upper shell and a middle shell fixedly arranged at its bottom. A camera is detachably clamped into the bottom of the middle shell. A large cable is fixedly arranged at the bottom of the camera. A lower shell is fixedly arranged at the bottom of the middle shell. One end of the upper shell, the middle shell, and the lower shell is fixedly provided with a mounting seat. A plurality of screw bodies are threadedly embedded between the upper shell, the middle shell, and the lower shell. A circuit board is fixedly arranged at the top of the mounting seat. A plurality of bolts are threadedly embedded in the top of the mounting seat. A transmission system is detachably fixedly arranged at the top of the mounting seat through a plurality of bolts. A sealing frame is detachably fixedly arranged at the side of the mounting seat through a plurality of bolts. A glass sheet is embedded in the top of the upper shell.

[0005] Further preferably, the screw body includes an arc cap, a fixing frame, a quarter column, an external thread, a threaded rod, a thread ring, a spreading frame, a welding frame, and a threaded cylinder. The sides of four arc caps are fixedly provided with a fixing frame. Four quarter columns are sleeved on the fixing frame. An external thread is integrally formed on the surfaces of the four quarter columns. A welding frame is embedded at one end of the quarter column. A threaded rod is movably placed in the middle of the four quarter columns. Thread rings are respectively threadedly sleeved at both ends of the threaded rod. A spreading frame is nested and fixed on the thread ring. A threaded cylinder is threadedly sleeved at one end of the threaded rod.

[0006] Further preferably, both ends of the quarter column are opened with expansion openings, and both ends of the threaded rod are opened with thread grooves, and the spiral directions of the two thread grooves are opposite.

[0007] Further preferably, the side opening of the threaded barrel is provided with four long strip openings, four screw grooves are provided between the four arc caps, and the four screw grooves surround the periphery of the threaded rod.

[0008] Further preferably, one end opening of the threaded barrel is provided with a straight groove, four sides of the support frame are integrally formed with inclined surfaces, and one end opening of the threaded rod is provided with a straight groove.

[0009] Further preferably, the expansion frame is in a square shape, and the four sides of the expansion frame enter into the expansion openings of the four quarter columns. The expansion frame moves in the four expansion openings to push the four quarter columns to separate synchronously.

[0010] Further preferably, the fixing frame is inserted into the expansion openings of the four quarter columns, and the welding frame is inserted into the expansion openings of the four quarter columns, and the shapes of the welding frame and the fixing frame are consistent.

[0011] Further preferably, the glass sheet is located directly above the camera, one end of the middle shell is fixed to the transmission system by bolts, and the upper shell, the middle shell and the lower shell are movably inserted through the middle of the sealing frame.

[0012] Further preferably, a motor driving chip is provided on the circuit board, a large flat cable is electrically connected between the camera and the circuit board, and the transmission system is a screw transmission or a linear slide rail transmission.

[0013] The beneficial effects of the present invention are: reducing unnecessary mechanical connection parts, using an integrated molding process to manufacture key structural parts, and reducing noise caused by friction and collision between parts. For example, the traditional complex multi-stage lifting rod is replaced by a single high-strength, lightweight integrated lifting shaft, which not only simplifies the structure, but also enhances stability and reduces potential noise sources; abandoning the chain and gear transmission that is prone to noise, and selecting a screw drive or a linear slide rail drive system. The screw drive has good shock absorption characteristics and can effectively buffer vibration and reduce noise when transmitting power; the linear slide rail cooperates with the high-precision slider and the guide rail to achieve smooth lifting and greatly reduce friction noise; in the moving contact part of the camera module, the use of low-friction coefficient materials reduces the noise caused by frictional heat and wear, while extending the service life of the equipment; The upper shell and installation part of the camera are wrapped with sound-absorbing cotton, sound-insulating rubber and other materials. The sound-absorbing cotton can effectively absorb the internal noise generated by the module operation and prevent it from propagating outward; the sound-insulating rubber can block the vibration transmission between the module and the car body, further reducing the impact of noise on the interior environment of the car; low-noise, high-precision motors are selected, and equipped with advanced motor driver chips. By optimizing the motor control algorithm, the smooth start, stop and speed change of the motor can be achieved to avoid electromagnetic noise and mechanical impact noise caused by instantaneous current changes in the motor; shock-absorbing rubber pads or spring shock absorbers are set between the motor and the module mounting seat to absorb the vibration generated by the motor operation and prevent the vibration from being transmitted to the entire camera, thereby reducing noise radiation. At the same time, elastic couplings are added to the transmission system to further buffer the vibration and impact between the motor and the transmission components; The two expansion frames move in the expansion openings of the four quarter columns respectively. When the two expansion frames approach each other, the four quarter columns are pushed to expand synchronously, so that the screws composed of the four quarter columns expand outward, which greatly increases the positive pressure of the four quarter columns on the inner wall of the threaded hole, thereby increasing the friction force of the four quarter columns on the inner wall of the threaded hole, preventing the four quarter columns from loosening in the threaded hole due to vibration, and firmly fixing the four quarter columns in the threaded hole; one end of the screw barrel is against one of the threaded rings to prevent the threaded ring from loosening on the threaded rod, and firmly positioning the threaded ring on the threaded rod, thereby further reinforcing the quarter columns, making the four quarter columns firmly fixed in the threaded hole, and making the upper shell, the middle shell and the lower shell firmly fixed together. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a disassembly schematic diagram of the present invention as a whole; Figure 3 It is a disassembly schematic diagram of the median shell of the present invention; Figure 4 The structure of the screw body of the present invention is shown in FIG. Figure 1 ; Figure 5 The structure of the screw body of the present invention is shown in FIG. Figure 2 ; Figure 6 is a cross-sectional schematic diagram of a screw body of the present invention; Figure 7 It is a schematic diagram of disassembling the screw body of the present invention; Figure 8 It is a structural schematic diagram of the support frame of the present invention.

[0015] In the figure: upper shell 1, bolt 2, screw body 3, arc cap 31, fixing frame 32, quarter column 33, external thread 34, expansion port 35, threaded rod 36, thread ring 37, support frame 38, welding frame 39, thread groove 310, threaded tube 311, long strip mouth 312, screw groove 313, slot 314, inclined surface 315, line groove 316, circuit board 4, mounting seat 5, sealing frame 6, middle shell 7, large flat cable 8, lower shell 9, glass sheet 10, camera 11, transmission system 12. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Reference Figures 1 to 8 A low-decibel lifting vehicle-mounted central control camera module structure comprises an upper shell 1 and a middle shell 7 fixed at its bottom, a camera 11 is detachably inserted into the bottom of the middle shell 7, a large flat cable 8 is fixedly arranged at the bottom of the camera 11, a lower shell 9 is fixedly arranged at the bottom of the middle shell 7, a mounting seat 5 is fixedly arranged at one end of the upper shell 1, the middle shell 7 and the lower shell 9, a plurality of screw bodies 3 are threadedly embedded between the upper shell 1, the middle shell 7 and the lower shell 9, a circuit board 4 is fixedly arranged at the top of the mounting seat 5, a plurality of bolts 2 are threadedly embedded at the top of the mounting seat 5, a transmission system 12 is detachably fixedly arranged at the top of the mounting seat 5 by a plurality of bolts 2, a sealing frame 6 is detachably fixedly arranged on the side of the mounting seat 5 by a plurality of bolts 2, and a glass sheet 10 is embedded at the top of the upper shell 1.

[0018] Preferably, the glass sheet 10 is located directly above the camera 11, one end of the middle shell 7 is fixed to the transmission system 12 by a bolt 2, the upper shell 1, the middle shell 7 and the lower shell 9 are movable through the middle of the sealing frame 6, a motor driving chip is provided on the circuit board 4, the large flat cable 8 is electrically connected between the camera 11 and the circuit board 4, the transmission system 12 is a screw drive or a linear slide drive, and the transmission system 12 includes a motor, and the motor drives the screw drive or the linear slide drive; During specific implementation, the upper housing 1 of the camera 11 and its installation part are wrapped with materials such as sound-absorbing cotton and sound-insulating rubber. The sound-absorbing cotton can effectively absorb the internal noise generated during the operation of the module and prevent it from spreading outward; the sound-insulating rubber can block the vibration transmission between the module and the vehicle body, further reducing the impact of noise on the vehicle interior environment. A low-noise and high-precision motor is selected and equipped with an advanced motor drive chip. By optimizing the motor control algorithm, smooth startup, stop, and speed change of the motor are achieved, avoiding electromagnetic noise and mechanical impact noise caused by instantaneous current changes in the motor. A shock-absorbing rubber pad or spring shock absorber is set between the motor and the module mounting base 5 to absorb the vibration generated during the operation of the motor and prevent the vibration from being transmitted to the entire camera 11, thereby reducing noise radiation. At the same time, an elastic coupling is added to the transmission system 12 to further buffer the vibration and impact between the motor and the transmission components.

[0019] During specific implementation, the upper housing 1, middle housing 7, and lower housing 9 are injection-molded using high-strength and lightweight engineering plastics, such as an alloy material of polycarbonate (PC) and acrylonitrile-butadiene-styrene copolymer (ABS). By optimizing the mold design, the upper housing 1 can tightly wrap the internal components. At the same time, a ribbed structure is designed inside to ensure the strength of the upper housing 1 while avoiding noise generated due to structural looseness.

[0020] During specific implementation, the transmission system 12 uses a ball linear slide rail. The material of the slide rail is high-hardness stainless steel, and the balls inside the slider are made of ceramic material to improve wear resistance and reduce the friction coefficient. When installing the linear slide rail, a high-precision positioning tooling is used to ensure that the parallelism error of the slide rail installation is controlled within ±0.05 mm, and the vertical installation accuracy is controlled within ±0.1 mm. This can ensure that the slider moves smoothly along the slide rail during the lifting process of the camera 11, reducing jamming and noise caused by installation deviation of the slide rail. For the joints of the transmission components, such as between the motor output shaft and the synchronous belt pulley, and between the linear slide rail slider and the connecting seat, self-lubricating bearings are used, and the inside of the self-lubricating bearings is filled with solid lubricants.

[0021] During specific implementation, a layer of sound-absorbing cotton with a thickness of 5 mm is pasted inside the upper housing 1 of the camera 11. The sound-absorbing cotton is made of fiberglass material, which has good sound absorption and fire resistance. When pasting the sound-absorbing cotton, ensure that the sound-absorbing cotton is closely attached to the inner wall of the upper housing 1 without gaps. For the corners and parts prone to resonance of the upper housing 1, sealant is used for sealing treatment to prevent sound leakage.

[0022] During specific implementation, a rubber shock pad is installed between the motor and the mounting base 5 of the camera 11. The rubber shock pad is made of natural rubber and has a Shore A hardness of 50-60 degrees. According to the size and weight of the motor, a shock pad with a suitable thickness and shape is selected. Generally, the thickness is 8-10 mm. When installing the shock pad, ensure that the shock pad is evenly distributed between the motor and the mounting base 5 and is firmly installed to prevent displacement during the operation of the motor.

[0023] Preferably, the screw body 3 includes an arc cap 31, a fixing frame 32, a quarter column 33, an external thread 34, a threaded rod 36, a thread ring 37, a spreading frame 38, a welding frame 39, and a threaded barrel 311. The fixing frame 32 is fixedly arranged on the side surfaces of the four arc caps 31. Four quarter columns 33 are sleeved on the fixing frame 32. The external thread 34 is integrally formed on the surfaces of the four quarter columns 33. One end of the quarter column 33 is embedded with the welding frame 39. The threaded rod 36 is movably placed in the middle of the four quarter columns 33. The thread rings 37 are respectively threadedly sleeved at both ends of the threaded rod 36. The spreading frame 38 is nested and fixed on the thread rings 37. One end of the threaded rod 36 is threadedly sleeved with the threaded barrel 311.

[0024] Preferably, expansion openings 35 are provided at both ends of the quarter column 33 in an open manner, threaded grooves 310 are provided at both ends of the threaded rod 36 in an open manner, and the spiral directions of the two threaded grooves 310 are opposite. Four long openings 312 are provided on the side surface of the threaded barrel 311 in an open manner. Four screw grooves 313 are provided between the four arc caps 31. The four screw grooves 313 surround the threaded rod 36. A slotted crosshead 314 is provided at one end of the threaded barrel 311 in an open manner. Inclined surfaces 315 are integrally formed on the four sides of the spreading frame 38. A wire groove 316 is provided at one end of the threaded rod 36 in an open manner. The spreading frame 38 is square-shaped. The four sides of the spreading frame 38 enter the expansion openings 35 of the four quarter columns 33. The movement of the spreading frame 38 in the four expansion openings 35 pushes the four quarter columns 33 to separate synchronously. The fixing frame 32 is inserted into the expansion openings 35 of the four quarter columns 33. The welding frame 39 is inserted into the expansion openings 35 of the four quarter columns 33. The shapes of the welding frame 39 and the fixing frame 32 are the same.

[0025] During specific implementation, please refer to Figures 4 to 8When in use, first, use a screwdriver to insert the screw groove 313 between the arc caps 31, rotate the four quarter columns 33, so that the quarter columns 33 are synchronously inserted into the screw holes of the lower shell 9, the arc cap 31 is against the upper shell 1, the upper shell 1, the middle shell 7 and the lower shell 9 are fixed together, and then a screwdriver is used to insert it into the line groove 316 at one end of the threaded rod 36, and the screwdriver is used to twist the threaded rod 36 to rotate between the two threaded circles 37. Since the spiral directions of the thread grooves 310 are opposite, the directions of one end of the threaded circles 37 on the threaded rod 36 are opposite, so that the two threaded circles 37 are close to each other at both ends of the threaded rod 36, and the two expansion frames 38 are respectively moved in the expansion openings 35 of the four quarter columns 33. During the process of the two expansion frames 38 approaching each other, the four quarter columns 33 are pushed to expand synchronously, so that the four quarter columns 33 are formed. The screw expands outward, greatly increasing the positive pressure of the four quarter columns 33 on the inner wall of the threaded hole, thereby increasing the friction force of the four quarter columns 33 on the inner wall of the threaded hole, preventing the four quarter columns 33 from loosening in the threaded hole due to vibration, and firmly fixing the four quarter columns 33 in the threaded hole. Then, a screwdriver is inserted into the slot 314 at the end of the threaded barrel 311, and the threaded barrel 311 is twisted with the screwdriver to move the threaded barrel 311 at one end of the threaded rod 36. One end of the screw barrel 311 is against one of the threaded rings 37 to prevent the threaded ring 37 from loosening on the threaded rod 36, and the threaded ring 37 is firmly positioned on the threaded rod 36, thereby further reinforcing the quarter columns 33, so that the four quarter columns 33 are firmly fixed in the threaded holes, and the upper shell 1, the middle shell 7 and the lower shell 9 are firmly fixed together.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-decibel lifting vehicle-mounted central control camera module structure, comprising an upper housing (1) and a middle housing (7) fixedly arranged at its bottom. A camera (11) is detachably snapped into the bottom of the middle housing (7). A large cable (8) is fixedly arranged at the bottom of the camera (11). A lower housing (9) is fixedly arranged at the bottom of the middle housing (7), and it is characterized in that: One end of the upper shell (1), the middle shell (7) and the lower shell (9) is fixedly provided with a mounting seat (5). A plurality of screw bodies (3) are threadedly embedded between the upper shell (1), the middle shell (7) and the lower shell (9). The top of the mounting seat (5) is fixedly provided with a circuit board (4). A plurality of bolts (2) are threadedly embedded in the top of the mounting seat (5). The transmission system (12) is detachably fixed to the top of the mounting seat (5) by a plurality of bolts (2). The sealing frame (6) is detachably fixed to the side of the mounting seat (5) by a plurality of bolts (2). A glass sheet (10) is embedded in the top of the upper shell (1).

2. The low-decibel lifting vehicle-mounted central control camera module structure according to claim 1, wherein The screw body (3) includes an arc cap (31), a fixing frame (32), a quarter column (33), an external thread (34), a threaded rod (36), a thread ring (37), a spreading frame (38), a welding frame (39) and a threaded barrel (311). The sides of the four arc caps (31) are fixedly provided with a fixing frame (32). Four quarter columns (33) are sleeved on the fixing frame (32). The surface of the four quarter columns (33) is integrally formed with an external thread (34). One end of the quarter column (33) is embedded with a welding frame (39). A threaded rod (36) is movably placed in the middle of the four quarter columns (33). Thread rings (37) are respectively threadedly sleeved at both ends of the threaded rod (36). A spreading frame (38) is nested and fixed on the thread ring (37). One end of the threaded rod (36) is threadedly sleeved with a threaded barrel (311).

3. The low-decibel lifting vehicle-mounted central control camera module structure according to claim 2, wherein, Both ends of the quarter column (33) are provided with expansion openings (35) in an open manner. Both ends of the threaded rod (36) are provided with threaded grooves (310) in an open manner, and the spiral directions of the two threaded grooves (310) are opposite.

4. The low-decibel lifting vehicle-mounted central control camera module structure according to claim 3, wherein Four long openings (312) are provided in an open manner on the side of the threaded barrel (311). Four screw grooves (313) are provided between the four arc caps (31). The four screw grooves (313) surround the periphery of the threaded rod (36).

5. The low-decibel lifting vehicle-mounted central control camera module structure according to claim 4, characterized in that, One end of the threaded barrel (311) is provided with a slotted crosshead (314) in an open manner. Inclined surfaces (315) are integrally formed on the four sides of the spreading frame (38). One end of the threaded rod (36) is provided with a wire groove (316) in an open manner.

6. The low-decibel lifting vehicle-mounted central control camera module structure according to claim 5, characterized in that, The spreading frame (38) is square-shaped. The four sides of the spreading frame (38) enter the expansion openings (35) of the four quarter columns (33). The spreading frame (38) moves in the four expansion openings (35) to push the four quarter columns (33) to separate synchronously.

7. The low-decibel lifting vehicle-mounted central control camera module structure according to claim 6, characterized in that, The fixing frame (32) is inserted into the expansion openings (35) of the four quarter columns (33). The welding frame (39) is inserted into the expansion openings (35) of the four quarter columns (33). The shapes of the welding frame (39) and the fixing frame (32) are the same.

8. The low-decibel lifting vehicle-mounted central control camera module structure according to claim 1, characterized in that, The glass sheet (10) is directly above the camera (11). One end of the middle shell (7) is fixed to the transmission system (12) by a bolt (2). The upper shell (1), the middle shell (7) and the lower shell (9) movably penetrate through the middle of the sealing frame (6).

9. The low-decibel lifting vehicle-mounted central control camera module structure according to claim 1, characterized in that, A motor drive chip is provided on the circuit board (4). A large cable (8) is electrically connected between the camera (11) and the circuit board (4). The transmission system (12) is a lead screw transmission or a linear slide rail transmission.

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