Automobile spherical rearview mirror capable of increasing visual field and manufacturing method thereof

Abstract

The invention belongs to the technical field of vehicle rearview devices, and discloses an automobile spherical rearview mirror capable of enlarging the view field and a manufacturing method of the automobile spherical rearview mirror, and the automobile spherical rearview mirror capable of enlarging the view field comprises a rearview mirror shell, a double-mirror-surface assembly, a turnover mechanism and a control module. Automatic switching between a plane mirror and a spherical mirror is achieved, the optimal view mode can be intelligently matched according to the vehicle speed and the steering or reversing state, wide-angle observation and distance judgment precision are considered, meanwhile, blind areas are effectively eliminated, and driving safety is improved; a matched electric push rod limiting structure can be automatically positioned and locked after the mirror surface is turned over, so that shaking and displacement are prevented; according to the scheme, automatic spraying and drying can be completed when the mirror face is turned over, clear imaging in rainy and snowy weather is ensured, the structure is reasonable, control is intelligent, the use safety and definition of the rearview mirror under various working conditions can be greatly improved, and the good practical application value is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle rearview devices, and particularly to a spherical rearview mirror for automobiles with an enlarged field of view and a manufacturing method thereof. Background Art

[0002] Currently, most vehicles still use fixed plane mirrors as the rearview mirror structure. Although they have a good imaging ratio and distance perception accuracy, their field of view is limited. Especially during vehicle lane change, reverse, or lane shift, blind spots in the side and rear are likely to occur. In contrast, spherical mirrors have a wider visible range and can significantly expand the viewing angle. However, due to problems such as image reduction and edge distortion, it is often not conducive to accurate distance judgment, resulting in potential safety hazards in specific scenarios.

[0003] In the prior art, there is no mature solution that can combine the advantages of spherical mirrors and plane mirrors and achieve dynamic switching. Fixed combined rearview mirrors are limited in structure and volume, lack flexibility, and cannot meet the switching requirements for different field of view effects during driving.

[0004] Therefore, there is an urgent need for a rearview mirror device with the ability to flip double mirrors, which can intelligently switch the mirror type according to driving states such as vehicle speed, steering, and reverse, so as to dynamically balance wide-angle observation and imaging accuracy, and at the same time have manufacturability and structural stability. Summary of the Invention

[0005] The present invention aims to provide a spherical rearview mirror for automobiles with an enlarged field of view and a manufacturing method thereof to solve the problems raised in the above background art. By integrating a flipable double mirror assembly in the automobile rearview mirror, combining a flipping mechanism and a control module, the automatic switching between a plane mirror and a spherical mirror is realized. It can intelligently match the optimal field of view mode according to vehicle speed, steering, or reverse state, effectively eliminate blind spots while taking into account wide-angle observation and distance judgment accuracy, and improve driving safety; with the provided electric push rod limit structure, it can automatically position and lock after the mirror flips to prevent jitter and displacement; and a self-cleaning mechanism can complete automatic spraying and drying when the mirror flips to ensure clear imaging in rainy and snowy weather. This solution has a reasonable structure and intelligent control, can greatly improve the use safety and clarity of the rearview mirror under various working conditions, and has good practical application value.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An automotive spherical rearview mirror with an enlarged field of view, including a rearview mirror housing, a double-mirror assembly, a flipping mechanism, and a control module. The double-mirror assembly includes a flipping plate. The front end of the rearview mirror housing is open. The two ends of the flipping plate are respectively connected with a spherical mirror and a plane mirror. The flipping plate is rotationally connected to the inner wall of the rearview mirror housing through the rotating shafts connected to its two ends. Both the spherical mirror and the plane mirror match the opening shape of the rearview mirror housing. The flipping mechanism is used to drive the spherical mirror and the plane mirror to flip and switch within the rearview mirror housing. The control module is electrically connected to the vehicle speed sensor, the turn signal, the reverse gear signal, and the flipping mechanism.

[0008] Preferably, the flipping mechanism includes a servo motor, a main pulley, a belt strip, and a driven pulley. The servo motor is connected to the inner wall of the rearview mirror housing. The main pulley and the driven pulley are respectively connected to the output end of the servo motor and one of the rotating shafts of the flipping plate, and the main pulley and the driven pulley are connected by the belt strip for transmission.

[0009] Preferably, limiting grooves are opened at both the upper and lower ends of the flipping plate. An electric push rod is connected to the inner wall of the rearview mirror housing. The output end of the electric push rod is connected with a limiting block that cooperates with the limiting groove. The control module is electrically connected to the electric push rod.

[0010] Preferably, a self-cleaning mechanism is arranged inside the rearview mirror housing. The self-cleaning mechanism includes a liquid storage box, a liquid guide pipe, a pump body, and multiple nozzles. One end of the pump body is communicated with the inner cavity of the liquid storage tank, and the other end of the pump body is connected with multiple nozzles through the liquid guide pipe.

[0011] Preferably, the multiple nozzles are arranged at equal intervals, and the emission ends of the multiple nozzles all face the direction of the double-mirror assembly. The water flows sprayed by the multiple nozzles can cover the mirror area of the double-mirror assembly. The control module is connected to the pump body.

[0012] Preferably, the self-cleaning assembly further includes a micro fan. The micro fan is connected to the inner wall of the rearview mirror housing, and the output end of the micro fan faces the direction of the double-mirror assembly. A heating element is connected inside the micro fan. The control module is connected to the micro fan.

[0013] Preferably, a plurality of drain holes are opened at the bottom end of the rearview mirror housing.

[0014] A manufacturing method for an automotive spherical rearview mirror with an enlarged field of view includes the following steps:

[0015] S1, provide a rearview mirror housing, form an opening at its front end, and set the installation position of the flipping mechanism and the pipeline layout position of the self-cleaning structure on the inner wall of the rearview mirror housing;

[0016] S2. Assemble the flip plate, fixedly connect a spherical mirror and a plane mirror at both ends thereof, and then install the flip plate on the corresponding position of the inner wall of the rearview mirror housing through a rotating shaft, so that the flip plate can be flipped and switched within the housing;

[0017] S3. Install flip drive components such as a servo motor, a main pulley, a driven pulley, and a belt on the inner wall of the rearview mirror housing to form a flip mechanism;

[0018] S4. Install the electric push rod and the limit block in the housing, and align the limit block with the limit groove on the flip plate to form mechanical limit locking after flipping;

[0019] S5. Install a liquid storage box, a pump body, a liquid guide pipe, and multiple nozzles in the rearview mirror housing, and arrange the nozzles equidistantly in the direction of the double mirror assembly;

[0020] S6: Install a micro fan and a heating element on the inner wall of the rearview mirror housing to form a mirror drying function;

[0021] S7. Integrate all electrical connection lines into the control module, and electrically connect it to the vehicle speed sensor, turn signal, reverse gear signal, flip mechanism, and self-cleaning mechanism of the vehicle to achieve intelligent linkage control.

[0022] Beneficial effects of this technical solution compared with the prior art:

[0023] This solution integrates a flipable double mirror assembly in the automotive rearview mirror, combines the flip mechanism and the control module to achieve automatic switching between the plane mirror and the spherical mirror, can intelligently match the optimal vision mode according to the vehicle speed, steering or reverse state, effectively eliminate blind spots while taking into account wide-angle observation and distance judgment accuracy, and improve driving safety; with the set electric push rod limit structure, it can automatically position and lock after the mirror is flipped to prevent jitter and displacement; and the self-cleaning mechanism can complete automatic spraying and drying when the mirror is flipped to ensure clear imaging in rainy and snowy weather. This solution has a reasonable structure and intelligent control, can greatly improve the use safety and clarity of the rearview mirror under various working conditions, and has good practical application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure provided by the present invention;

[0025] Figure 2 It is an exploded structure schematic diagram of the rearview mirror housing provided by the present invention;

[0026] Figure 3 It is a schematic diagram of the top structure of the inner cavity of the rearview mirror housing provided by the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the double mirror assembly provided by the present invention.

[0028] Reference numerals: 1, rearview mirror housing; 2, flip plate; 3, spherical mirror; 4, plane mirror; 5, servo motor; 6, main pulley; 7, belt strip; 8, driven pulley; 9, micro fan; 10, nozzle; 11, electric push rod; 12, limit block; 13, limit groove; 14, drain hole. Detailed implementation mode

[0029] The present invention will be further described in detail below in conjunction with the drawings and the implementation mode:

[0030] As Figures 1-4 shown, an automotive spherical rearview mirror with an enlarged field of view, including a rearview mirror housing 1, a dual-mirror assembly, a flipping mechanism, and a control module. The dual-mirror assembly includes a flip plate 2. The front end of the rearview mirror housing 1 is open. The two ends of the flip plate 2 are respectively connected with a spherical mirror 3 and a plane mirror 4. The flip plate 2 is rotationally connected to the inner wall of the rearview mirror housing 1 through the rotating shafts connected to its two ends. Both the spherical mirror 3 and the plane mirror 4 match the opening shape of the rearview mirror housing 1. The flipping mechanism is used to drive the spherical mirror 3 and the plane mirror 4 to achieve flipping and switching within the rearview mirror housing 1. The control module is electrically connected to the vehicle speed sensor, turn signal, reverse gear signal, and the flipping mechanism.

[0031] Currently, most vehicles still use a fixed plane mirror as the rearview mirror structure. Although it has a good imaging ratio and distance perception accuracy, its field of view is limited. Especially during vehicle lane change, reverse, or lane changing, there are easily blind spots in the side and rear. In contrast, a spherical mirror has a wider visible range and can significantly expand the viewing angle. However, due to problems such as image reduction and edge distortion, it is often not conducive to accurate distance judgment, resulting in potential safety hazards in specific scenarios. Therefore, there is an urgent need for a rearview mirror device with the ability to flip dual mirrors, which can intelligently switch the mirror type according to driving states such as vehicle speed, steering, and reverse, so as to dynamically balance wide-angle observation and imaging accuracy, and at the same time have manufacturability and structural stability.

[0032] The present invention provides a rearview mirror structure with an enlarged field of view for automobiles, aiming to automatically switch the mirror type according to different driving conditions, improve the clarity of rear observation and the wide-angle coverage ability, and is particularly suitable for scenarios with vision blind spots such as lane change and reverse. It includes an integrally formed rearview mirror housing 1 and a flippable dual-mirror assembly. The dual-mirror assembly is arranged at the opening part at the front end of the rearview mirror housing 1 and can perform flipping motion around the horizontal axis. The dual-mirror assembly is composed of a flip plate 2. The front and back sides of the flip plate 2 are respectively fixed with a plane mirror 4 and a spherical mirror 3, which are respectively used for normal imaging and expanding the field of view.

[0033] The flipping mechanism includes a servo motor 5, a main pulley 6, a belt strip 7, and a driven pulley 8. The servo motor 5 is connected to the inner wall of the rearview mirror housing 1. The main pulley 6 and the driven pulley 8 are respectively connected to the output end of the servo motor 5 and one of the rotating shafts of the flipping plate 2, and the main pulley 6 and the driven pulley 8 are drivingly connected by the belt strip 7.

[0034] To achieve automatic mirror switching, the flipping plate 2 is connected to the inner wall of the rearview mirror housing 1 through shafts at both ends and is driven to flip by a set of flipping mechanisms. The flipping mechanism includes a servo motor 5, a main pulley 6, a driven pulley 8, and a transmission belt 7 installed on the inner wall of the housing. Among them, the servo motor 5 drives the main pulley 6 to rotate, is linked with the driven pulley 8 through the transmission belt 7, and the driven pulley 8 is fixedly connected to one end shaft of the flipping plate 2, thereby driving the entire mirror assembly to flip and realizing the automatic replacement of the plane mirror 4 and the spherical mirror 3 within the viewing area.

[0035] This flipping process is automatically executed by the control module. The control module is connected to control signals such as the vehicle speed signal, the turn signal status, and the reverse gear signal of the vehicle. When the vehicle is driving at a low speed or in reverse, the control module drives the servo motor 5 to flip the mirror, placing the spherical mirror 3 on the outside to expand the rear view of the driver's side; when the vehicle is driving at a high speed, it returns to the plane mirror 4 to facilitate accurately judging the distance of the vehicle behind. This dynamic switching method takes into account the advantages and disadvantages of different mirrors, reducing the blind spot risk while ensuring driving safety.

[0036] Limit slots 13 are provided at both the upper and lower ends of the flipping plate 2. An electric push rod 11 is connected to the inner wall of the rearview mirror housing 1. The output end of the electric push rod 11 is connected to a limit block 12 that cooperates with the limit slot 13. The control module is electrically connected to the electric push rod 11.

[0037] To ensure that the flipped mirror remains stable and does not shake after the switching is completed, an automatic positioning and locking structure is also provided inside the rearview mirror. When the flipping plate 2 rotates to the specified position, the control module will automatically start the electric push rod 11 to push out the limit block 12 and insert it into the limit slot 13 on the flipping plate 2 to form a mechanical lock, effectively preventing the mirror from deflecting or loosening due to vehicle vibration. This positioning structure has the characteristics of fast response and reliable locking, providing reliable support for the dynamic switching of the mirror.

[0038] A self-cleaning mechanism is provided inside the rearview mirror housing 1. The self-cleaning mechanism includes a liquid storage box, a liquid guide pipe, a pump body, and multiple nozzles 10. One end of the pump body is communicated with the inner cavity of the liquid storage tank, and the other end of the pump body is connected to the multiple nozzles 10 through the liquid guide pipe. The multiple nozzles 10 are arranged at equal distances, and the emission ends of the multiple nozzles 10 all face the direction of the double mirror assembly. The water flow sprayed by the multiple nozzles 10 can cover the mirror area of the double mirror assembly. The control module is connected to the pump body.

[0039] The present invention further takes into account that the mirror surface is prone to being affected by stains, water droplets, etc., which affect the imaging clarity in rainy, snowy weather or after long-term use. Especially in the flipping structure, both mirror surfaces are exposed to the external environment. Therefore, a self-cleaning mechanism is provided inside the rearview mirror housing 1, including a group of evenly arranged nozzles 10. The nozzles are oriented towards the two mirror surfaces on the flipping plate 2, and can perform cleaning operations after the mirror surfaces are flipped to the internal state, ensuring that the cleaning operation is completed on the back of the mirror surfaces, avoiding water spraying from blocking the driver's line of sight. The nozzles 10 are linked and controlled by a control module, and the cleaning program is automatically started when it is detected that the mirror surface is contaminated or when the vehicle speed is lower than the set value and in rainy or snowy conditions.

[0040] The self-cleaning component further includes a micro fan 9. The micro fan 9 is connected to the inner wall of the rearview mirror housing 1, and the output end of the micro fan 9 is oriented towards the direction of the double mirror component. A heating element is connected inside the micro fan 9, and the control module is connected to the micro fan 9.

[0041] To improve the drying speed of the mirror surface after cleaning, the present invention also provides a micro fan 9 inside the rearview mirror housing 1. Its air outlet is oriented towards the area where the flipping plate 2 is located. A heating element is integrated inside the micro fan 9, which can realize the function of blowing hot air. On the one hand, it can blow hot air to dry the mirror surface after cleaning, avoiding imaging blurring caused by water droplet residues. On the other hand, it can be used as a defrosting device in low-temperature environments to pre-heat the mirror surface in advance to prevent icing, ensuring the stability and safety of all-weather use.

[0042] A plurality of drain holes 14 are opened at the bottom end of the rearview mirror housing 1.

[0043] In addition, to avoid water staying inside the rearview mirror housing during the cleaning process, which may cause corrosion or short circuit, a number of drain holes 14 are evenly provided at the bottom of the rearview mirror housing 1, for timely discharging the remaining liquid after cleaning, improving the reliability of the system operation.

[0044] A manufacturing method of a spherical rearview mirror for a vehicle with an enlarged field of view includes the following steps:

[0045] S1, provide the rearview mirror housing 1, form an opening at its front end, and set the installation position of the flipping mechanism and the pipeline layout position of the self-cleaning structure on the inner wall of the rearview mirror housing 1;

[0046] S2, assemble the flipping plate 2, fixedly connect the spherical mirror 3 and the plane mirror 4 at both ends thereof, and then install the flipping plate 2 on the corresponding position of the inner wall of the rearview mirror housing 1 through a rotating shaft, so that the flipping plate can be flipped and switched inside the housing;

[0047] S3, install flipping drive components such as a servo motor 5, a main pulley 6, a slave pulley 8, and a belt 7 on the inner wall of the rearview mirror housing 1 to form a flipping mechanism;

[0048] S4. Install the electric push rod 11 and the limit block 12 in the housing, and align the limit block 12 with the limit groove 13 on the flip plate 2 to form mechanical limit locking after flipping.

[0049] S5. Install a liquid storage box, a pump body, a liquid guide pipe and a plurality of nozzles 10 in the rearview mirror housing 1, and arrange the nozzles 10 equidistantly in the direction of the double mirror assembly.

[0050] S6: Install a micro fan 9 and a heating element on the inner wall of the rearview mirror housing 1 to form a mirror drying function.

[0051] S7. Integrate all electrical connection lines into the control module, and electrically connect it to the vehicle speed sensor, turn signal, reverse gear signal, flipping mechanism and self-cleaning mechanism of the vehicle to achieve intelligent linkage control.

[0052] The above are only embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. An automotive spherical rearview mirror with an enlarged field of view, characterized in that, Comprising: A rearview mirror housing (1), the front end of the rearview mirror housing (1) being open; A dual mirror assembly, the dual mirror assembly including a flip plate (2), spherical mirrors (3) and plane mirrors (4) being respectively connected to both ends of the flip plate (2), the flip plate (2) being rotatably connected to the inner wall of the rearview mirror housing (1) through rotating shafts connected to both ends thereof, and both the spherical mirrors (3) and the plane mirrors (4) matching the opening shape of the rearview mirror housing (1); A flipping mechanism for driving the spherical mirror (3) and the plane mirror (4) to flip and switch within the rearview mirror housing (1); A control module electrically connected to a vehicle speed sensor, a turn signal, a reverse gear signal and the flipping mechanism.

2. The spherical rearview mirror for vehicle with enlarged field of view according to claim 1, characterized in that: The flipping mechanism includes a servo motor (5), a main pulley (6), a belt (7) and a driven pulley (8), the servo motor (5) being connected to the inner wall of the rearview mirror housing (1), the main pulley (6) and the driven pulley (8) being respectively connected to the output end of the servo motor (5) and one of the rotating shafts of the flip plate (2), and the main pulley (6) and the driven pulley (8) being drivingly connected through the belt (7).

3. The spherical rearview mirror for vehicle with enlarged view as claimed in claim 1, wherein: Limit slots (13) are respectively provided at the upper and lower ends of the flip plate (2), an electric push rod (11) is connected to the inner wall of the rearview mirror housing (1), a limit block (12) matching the limit slot (13) is connected to the output end of the electric push rod (11), and the control module is electrically connected to the electric push rod (11).

4. The spherical rearview mirror for vehicle with enlarged view according to claim 1, characterized in that: A self-cleaning mechanism is provided inside the rearview mirror housing (1), the self-cleaning mechanism including a liquid storage box, a liquid guide pipe, a pump body and a plurality of nozzles (10), one end of the pump body being communicated with the inner cavity of the liquid storage tank, and the other end of the pump body being connected to the plurality of nozzles (10) through the liquid guide pipe.

5. The spherical rearview mirror for vehicle with enlarged viewing field according to claim 4, characterized in that: The plurality of nozzles (10) are arranged at equal intervals, and the emission ends of the plurality of nozzles (10) all face the direction of the dual mirror assembly, and the water flows sprayed by the plurality of nozzles (10) can cover the mirror area of the dual mirror assembly, and the control module is connected to the pump body.

6. The spherical rearview mirror for vehicle with an enlarged field of view according to claim 4, wherein: The self-cleaning assembly further includes a micro fan (9), the micro fan (9) being connected to the inner wall of the rearview mirror housing (1), and the output end of the micro fan (9) facing the direction of the dual mirror assembly, a heating element being connected inside the micro fan (9), and the control module being connected to the micro fan (9).

7. The spherical rearview mirror for vehicle with an enlarged field of view according to claim 1, wherein: A plurality of drain holes (14) are provided at the bottom end of the rearview mirror housing (1).

8. The manufacturing method of a spherical rearview mirror for a vehicle with an enlarged field of view according to any one of claims 1-7, characterized in that, Including the following steps: S1. Provide the rearview mirror housing (1), form an opening at its front end, and provide an installation position for the flipping mechanism and a pipeline layout position for the self-cleaning structure on the inner wall of the rearview mirror housing (1); S2. Assemble the flip plate (2), fixedly connect the spherical mirror (3) and the plane mirror (4) to both ends thereof, and then install the flip plate (2) on the corresponding position of the inner wall of the rearview mirror housing (1) through a rotating shaft, so that the flip plate can flip and switch within the housing; S3. Install flipping driving components such as the servo motor (5), the main pulley (6), the driven pulley (8) and the belt (7) on the inner wall of the rearview mirror housing (1) to form a flipping mechanism; S4. Install the electric push rod (11) and the limit block (12) inside the housing, and align the limit block (12) with the limit groove (13) on the flip plate (2) to form mechanical limit locking after flipping. S5. Install a liquid storage box, a pump body, a liquid guide pipe and multiple nozzles (10) inside the rearview mirror housing (1), and arrange the nozzles (10) equidistantly in the direction of the double mirror assembly. S6: Install a micro fan (9) and a heating element on the inner wall of the rearview mirror housing (1) to form a mirror drying function. S7. Integrate all electrical connection lines into the control module and electrically connect it to the vehicle speed sensor, turn signal, reverse gear signal, flipping mechanism and self-cleaning mechanism of the vehicle to achieve intelligent linkage control.

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