Vehicle a-pillar blind spot elimination device and vehicle

Abstract

The application discloses a vehicle A-column blind area eliminating device, and relates to the technical field of vehicle accessories.The vehicle A-column blind area eliminating device comprises an objective lens assembly and an eyepiece assembly.The objective lens assembly comprises an objective lens, which is connected to the outer surface of the front quarter window glass on any side of the vehicle body and can receive and reflect the light emitted from the A-column blind area on the side of the vehicle body.The eyepiece assembly comprises an eyepiece, which is located on the same side of the vehicle body as the objective lens and is connected to the side surface of the rearview mirror assembly facing the cockpit, and can receive and reflect the light reflected by the objective lens to the driver at the driving position.The application further discloses a vehicle comprising a vehicle body and the vehicle A-column blind area eliminating device, and the rearview mirror assembly is arranged on any side of the vehicle body.Therefore, the vehicle A-column blind area eliminating device and the vehicle can eliminate the blind area of the vehicle, do not form secondary shielding to the forward main visual field of the driver, have a simple structure and are convenient to install.

Description

Technical Field

[0001] This invention relates to the field of vehicle parts technology, and in particular to a vehicle A-pillar blind spot elimination device and vehicle. Background Technology

[0002] The A-pillar, as a key load-bearing structure at the front of the vehicle, is a core safety component ensuring the survival space of occupants in frontal and side collisions. Its structural strength and layout design directly determine the overall collision safety performance of the vehicle. However, due to the limitations of the vehicle's structural layout, the A-pillar is fixedly positioned on both sides of the windshield. Its physical width inevitably creates a rigid obstruction to the driver's forward and side-forward vision, forming a fixed A-pillar blind spot. This blind spot easily obstructs pedestrians, non-motorized vehicles, small obstacles, and road signs during high-frequency driving scenarios such as turning, lane changing, intersection crossings, and mixed pedestrian and vehicle traffic. This prevents drivers from timely obtaining road condition information in the blind spot, leading to collisions, scrapes, and other traffic accidents, and has become one of the core pain points restricting driving safety. To eliminate or reduce the safety risks posed by the A-pillar blind spot, the industry has proposed various technical solutions, but all have inherent defects that are difficult to overcome.

[0003] Existing technology involves installing a mirror frame on the A-pillar structure and fixing two sets of reflective lenses within the frame. This utilizes optical reflection to transmit the blind spot image from outside the A-pillar to the driver's field of vision. While this solution achieves basic blind spot image transmission, the mirror and mounting structure must be fixed to the A-pillar. This requires removing the A-pillar interior panel for installation, making the process complex and difficult for ordinary users to perform themselves. Furthermore, it directly occupies the side curtain airbag deployment area and the original vehicle wiring harness path within the A-pillar, disrupting the original structural layout and severely impacting occupant protection performance in collision scenarios, thus failing to meet vehicle safety design specifications. Secondly, the mirror frame and mirror extend towards the windshield, additionally occupying the effective observation area and creating secondary visual obstruction. This problem exists regardless of whether the mirror is installed on the left or right side, directly interfering with the driver's normal observation of the road ahead and exacerbating driving safety risks. Summary of the Invention

[0004] The purpose of this invention is to provide a vehicle A-pillar blind spot elimination device and vehicle to solve the problems existing in the prior art. It can eliminate vehicle blind spots without causing secondary obstruction to the driver's forward main field of vision, and has a simple structure and is easy to install.

[0005] To achieve the above objectives, the present invention provides the following solution: This invention provides a vehicle A-pillar blind spot elimination device, comprising an objective lens assembly and an eyepiece assembly; the objective lens assembly includes an objective lens for connection to the outer surface of the front triangular window glass on either side of the vehicle body, and the objective lens is capable of receiving and reflecting light emitted from the A-pillar blind spot on that side of the vehicle body; the eyepiece assembly includes an eyepiece, the eyepiece and the objective lens are located on the same side of the vehicle body and are connected to the side surface of the rearview mirror assembly facing the driver's cabin, and the eyepiece is capable of receiving and reflecting the light reflected by the objective lens to the driver in the driver's seat.

[0006] In some embodiments, when the objective lens is fixedly mounted on the outer surface of the front triangular window glass of the vehicle, the objective lens is a semi-reflective semi-transparent lens, so as to reflect light emitted from the blind spot of the A-pillar while transmitting ambient light.

[0007] In some embodiments, the eyepiece assembly further includes an adjustment component for connecting the eyepiece to the cockpit-facing surface of the rearview mirror assembly and for adjusting and locking the spatial position and angle of the eyepiece.

[0008] In some embodiments, the adjustment assembly includes an adjustment bracket and a support base, the support base being bonded to the side surface of the rearview mirror assembly facing the cockpit, one end of the adjustment bracket being connected to the support base, and the other end of the adjustment bracket being connected to the eyepiece, the adjustment bracket being capable of adjusting and locking the spatial position and spatial angle of the eyepiece.

[0009] In some embodiments, the adjustment bracket includes a first ball joint, a second ball joint, and a support rod. The first ball joint includes a first hinge seat and a first ball head. The second ball joint includes a second hinge seat and a second ball head. The first ball head is rotatable relative to the first hinge seat and can be locked in a rotatable state. The second ball head is rotatable relative to the second hinge seat and can be locked in a rotatable state. Both the first and second ball joints include a hinge seat and a ball head. The two ends of the support rod are fixedly connected to the ball heads of the first and second ball joints, respectively. The hinge seat of the first ball joint is fixedly connected to the support seat, and the hinge seat of the second ball joint is fixedly connected to the eyepiece.

[0010] In some embodiments, the support base includes a fixed base, a rotating disk, and a rotation locking member. The rotating disk is rotatably connected to the fixed base about a rotation axis to adjust the circumferential angle of the eyepiece about the rotation axis. The rotation locking member is disposed between the fixed base and the rotating disk to lock the rotation angle of the rotating disk relative to the fixed base. One end of the adjusting bracket is fixedly connected to the surface of the rotating disk away from the fixed base.

[0011] In some embodiments, the mounting base includes a composite base plate, a supporting base plate, and a connecting base that are stacked and fixedly connected in sequence. The surface of the composite base plate away from the supporting base plate is used to be bonded and fixed to the side of the rearview mirror assembly facing the cockpit. The side of the connecting base away from the supporting base plate is rotatably connected to the rotating disk.

[0012] In some embodiments, the composite base plate includes a first support plate, a pressure-sensitive adhesive layer, a second support plate, and a double-sided adhesive layer that are stacked and bonded together in sequence; the double-sided adhesive layer is used to bond and fix to the surface of the rearview mirror assembly, and the first support plate is used to fix and connect to the support base plate; the compression rate of the pressure-sensitive adhesive layer is 20% to 40%.

[0013] In some embodiments, the objective lens includes an objective lens and a backing, the objective lens being capable of reflecting light emitted from the blind spot of the A-pillar on either side of the vehicle; the backing is attached to the surface of the objective lens away from its reflective surface, the backing being used to attach the objective lens to the outer surface of the front triangular window glass on either side of the vehicle.

[0014] The present invention also provides a vehicle, including a body and the vehicle A-pillar blind spot elimination device described in any of the above claims, wherein the rearview mirror assembly is provided on either side of the body, i.e., on both the left and right sides when the vehicle is in motion.

[0015] The present invention achieves the following technical effects compared to the prior art: This invention utilizes an objective lens assembly and an eyepiece assembly. The objective lens assembly is mounted on the outer surface of the front triangular window glass to receive and reflect light from the A-pillar blind spot. The eyepiece assembly is mounted on the side of the rearview mirror assembly facing the driver's cabin, receiving the light reflected by the objective lens and projecting it into the driver's eye. Without the intervention of electronic components, it presents a complete, zero-delay, and distortion-free image of the A-pillar blind spot through pure optical reflection, fundamentally avoiding the safety risks of blind spot collisions. Simultaneously, the installation positions of the eyepiece and objective lens align with the driver's natural driving line of sight, without interfering with the original vehicle's normal driving vision or the original function of the rearview mirror assembly. It can achieve seamless adaptation across all vehicle models. The pure optical structure can operate stably under various driving conditions, with zero energy consumption and no maintenance required. While significantly improving driving safety, it effectively reduces driver blind spot anxiety and driving fatigue. Furthermore, both the objective lens assembly and the eyepiece assembly are located at the edge of the driver's forward main field of vision and use a lateral reflection light path, not crossing the driver's forward main field of vision. Therefore, they do not create any secondary obstruction to the driver's forward main field of vision and do not affect normal driving observation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the vehicle A-pillar blind spot elimination device in one embodiment of Example 1; Figure 2 This is a schematic diagram of the optical path of the vehicle A-pillar blind spot elimination device in one embodiment of Example 1; Figure 3 This is a schematic diagram of the objective lens assembly structure in one embodiment of Example 1; Figure 4 This is a schematic diagram of the eyepiece assembly structure in one embodiment of Example 1; Figure 5 This is a front view of the eyepiece assembly in one embodiment of Example 1; Figure 6 This is a cross-sectional view of the eyepiece assembly in one embodiment of Example 1; Figure 7 This is an enlarged view of the first buckle in one embodiment of Example 1.

[0018] The components are: 1-Rearview mirror assembly; 2-Eyepiece assembly; 3-Triangular window glass; 4-Driver's line of sight; 5-Blind spot view; 6-Objective lens assembly; 7-A-pillar; 8-Protective film; 9-Objective lens; 10-Backing; 12-Support base plate; 13-Composite base plate; 14-Second buckle; 15-Knurled screw; 16-Rotating disk; 17-First buckle; 18-Adjustment bracket; 19-First ball joint; 20-Eyepiece mount; 21-Eyepiece; 22-Second ball hinge; 23-Support rod; 24-Second nut; 25-Second ball head; 26-Second hinge seat; 27-First ball head; 28-First nut; 29-First hinge seat; 30-Double-sided adhesive layer; 31-Second support plate; 32-Pressure-sensitive adhesive layer; 33-First support plate; 34-Anti-slip teeth; 35-Snap fastener; 37-Locking screw; 38-Compression spring; 39-Snap fastener cap. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1 This embodiment provides a vehicle A-pillar blind spot elimination device, such as Figure 1-7 As shown, the rearview mirror assembly includes an objective lens assembly 6 and an eyepiece assembly 2. The objective lens assembly 6 includes an objective lens 9, which is attached to the outer surface of the front triangular window glass 3 on either side of the vehicle body. The objective lens 9 is capable of receiving and reflecting light emitted from the blind spot of the A-pillar 7 on that side of the vehicle body. The eyepiece assembly 2 includes an eyepiece 21, which is located on the same side of the vehicle body as the objective lens 9 and is attached to the surface of the rearview mirror assembly 1 facing the driver's cabin. The eyepiece 21 is capable of receiving and reflecting the light reflected by the objective lens 9 to the driver in the driver's seat. In this embodiment, either side of the vehicle is the left or right side of the vehicle's driving direction. In this embodiment, by setting the objective lens assembly 6 and the eyepiece assembly 2, the objective lens assembly 6 is mounted on the outer surface of the front triangular window glass 3 to receive and reflect light from the blind spot of the A-pillar 7, and the eyepiece assembly 2 is mounted on the side of the rearview mirror assembly 1 facing the driver's cabin to receive light reflected by the objective lens 9. The light is projected into the driver's eyes in the driver's seat. Without the intervention of electronic components, it can present the blind spot of the A-pillar 7 completely with zero delay and without distortion through the pure optical reflection principle, thus avoiding the safety risk of blind spot collisions from the root. At the same time, the installation position of the eyepiece 21 and the objective lens 9 is close to the driver's natural driving line of sight, without interfering with the original normal driving vision and the original function of the rearview mirror assembly 1. It can achieve lossless adaptation to all vehicle models. The pure optical structure can work stably under various driving conditions, with zero energy consumption and no maintenance throughout the process. While greatly improving driving safety, it effectively reduces the driver's blind spot anxiety and driving fatigue. Moreover, the objective lens assembly 6 and the eyepiece assembly 2 are both arranged in the edge area outside the driver's forward main field of vision, and adopt the side reflection light path, which does not cross the main line of vision directly in front, so it will not form any secondary obstruction to the driver's forward main field of vision and will not affect the normal driving observation field of vision.

[0022] For some models without a triangular window design, the objective lens assembly uses a single-function reflector (without transmission requirements), which is directly attached to the outer surface of the vehicle body at the corresponding position on the outside of the A-pillar. The eyepiece assembly 2 is installed on the inner side of the rearview mirror assembly 1. It achieves blind spot observation through the principle of reflection. The optical adjustment principle is the same, and the blind spot coverage rate can reach more than 70%.

[0023] In some embodiments of this example, when the objective lens 9 is fixedly installed on the outer surface of the front triangular window glass 3 of the vehicle, the objective lens 9 is a semi-reflective semi-transparent mirror, so as to reflect the light emitted from the blind spot of the A-pillar 7 while transmitting ambient light; by installing the eyepiece 21 on the side surface of the rearview mirror assembly 1 facing the driver's cabin and using a semi-reflective semi-transparent mirror design for the objective lens 9 fixed on the outer surface of the front triangular window glass 3 of the vehicle, the eyepiece 21 is aligned with the driver's natural line of sight during normal driving, so as to obtain the blind spot image without large-scale eye movement or frequent focusing, and without obstructing the rear view at all times. The original functions of the rearview mirror assembly 1 and the normal driving field of vision of the vehicle are maintained, avoiding the safety hazards of the view being off the road. At the same time, the rigid installation base of the rearview mirror assembly 1 can ensure the long-term stability of the light path and can achieve non-destructive universal adaptation to all vehicle models. Furthermore, through the semi-reflective and semi-transparent mirror, the reflection and transmission of light in the A-pillar 7 blind spot and the transmission of ambient light from outside the vehicle are realized simultaneously. It does not occupy the main field of vision of the front window, and fully retains the original perspective function of the front triangular window. It completely solves the problems of blind spot compensation and field of vision obstruction, and achieves a safe, stable and interference-free blind spot compensation effect in the A-pillar 7 blind spot, while effectively reducing driver visual fatigue.

[0024] Utilizing a purely physical optical reflection principle, hardware costs are reduced by 75% to 80% compared to electronic systems. Core optical components use PMMA acrylic instead of traditional optical glass, lowering material costs by over 60%, while injection molding technology supports large-scale, efficient production. The absence of electronic components means zero failure rate, zero power consumption, zero electromagnetic interference, near-zero maintenance costs, and a lifespan comparable to the entire vehicle.

[0025] The objective lens 9 substrate is made of optical-grade PMMA acrylic, which, after UV curing, maintains dimensional stability and optical transparency within a temperature range of -40℃ to 85℃, and will not yellow or become brittle for ten years. The double-sided adhesive layer uses 3M VHB acrylic foam adhesive, with an initial adhesion strength of 20N / cm. After 1000 hours of high-temperature aging at 85℃, the peel strength retention rate is >90% according to ASTM D1002 standard testing. The snap-fit ​​assembly includes a first snap-fit ​​17 and a second snap-fit ​​14. Both snap-fit ​​17 and 14 are made of 45# steel that has been quenched and tempered, with a chemically oxidized black surface, making them wear-resistant and corrosion-resistant, ensuring no deformation after more than 5000 repeated disassembly and assembly cycles.

[0026] The daily adjustment of the rearview mirror assembly 1, the opening and closing of the door, and even driving vibrations may introduce optical path deviations. The adjustment bracket 18 in this embodiment, through its multi-degree-of-freedom design, allows the driver to quickly correct the image shift caused by the position change of the rearview mirror assembly 1 without tools, ensuring that the blind spot image is always presented stably.

[0027] To explore the possibility of a larger field of view, this embodiment replaces objective lens 9 with a cylindrical mirror (radius of curvature R = 200 mm), while eyepiece 21 remains a plane mirror. According to the principles of geometric optics, the horizontal field of view of a cylindrical mirror is FOVcyl ≈ FOVplane + 2 × arcsin(W / 2R), where FOVcyl is the horizontal field of view of the cylindrical mirror, FOVplane is the field of view of the plane mirror, and W is the width of the cylindrical mirror. Taking typical parameters W = 80 mm, R = 200 mm, and arcsin(0.2) = 11.54°, the expansion angle is approximately 23°. If the field of view of the plane mirror is 22°~30°, the field of view of the cylindrical mirror can reach 45°~53°, with an expansion angle of approximately 40%~60%. Slight distortion exists at the image edges, but it is within an acceptable range and does not affect distance judgment. In practical applications, a suitable curvature can be selected according to the vehicle model and user needs to achieve a balance between field of view and distortion.

[0028] Optical adjustment principle: Based on the principles of geometric optics and typical optical path parameter settings, where L represents the equivalent length of the optical path (this length is obtained by adding the distance from the objective lens to the eyepiece and the distance from the eyepiece to the virtual image, ranging from approximately 500mm to 700mm), in this embodiment we take the value of L to be 600mm; meanwhile, D represents the distance from the eyepiece to the virtual image (ranging from approximately 400mm to 600mm), here we set D to 500mm. Under this premise, the adjustment amount of the position and orientation of the eyepiece 21 and the observed image changes have the following relationship: Eyepiece 21 moves along the X-axis by a distance This causes the image to rotate at an angle. ≈2×arctan( / L), meaning that every 5mm movement causes the image to rotate by about 1°; Eyepiece 21 rotates around the Z-axis by an angle This causes the image to rotate by an angle of approximately 2× That is, when the eyepiece 21 is rotated by 5°, the image rotates by about 10°; Eyepiece 21 pitch rotation angle α, the vertical movement distance of the image h≈2× α×D means that when the pitch is 3° (0.0524 rad), the image moves up and down by about 50mm-60mm.

[0029] By adjusting the position and orientation of the eyepiece 21, the driver's line of sight and field of view can be controlled, so that the blind spot image is fully presented in the field of view of the eyepiece 21.

[0030] In some embodiments of this example, the eyepiece assembly 2 further includes an adjustment component. The adjustment component is used to connect the eyepiece 21 to the side surface of the rearview mirror assembly 1 facing the driver's cabin and can adjust and lock the spatial position and angle of the eyepiece 21. By setting an adjustment component that can adjust and lock the position and angle between the eyepiece 21 and the rearview mirror assembly 1, the eyepiece orientation can be flexibly adjusted according to the height, sitting posture and viewing angle of different drivers, so that the reflected light path is accurately aligned with the driver's eyes, ensuring that the blind spot image is clearly visible. At the same time, the adjusted position of the eyepiece 21 can be reliably locked to avoid light path deviation and image shaking caused by vehicle bumps and vibrations. This not only significantly improves the adaptability and observation effect when used by different people, but also ensures the stability and safety of the device during driving.

[0031] In some embodiments of this example, the adjustment component includes an adjustment bracket 18 and a support base. The support base is used to adhere to the surface of the rearview mirror assembly 1 facing the driver's cabin. One end of the adjustment bracket 18 is connected to the support base, and the other end of the adjustment bracket 18 is connected to the eyepiece 21. The adjustment bracket 18 can adjust and lock the spatial position and spatial angle of the eyepiece 21. The support base is used for adhesive installation to achieve non-destructive and convenient fixing to the inside of the rearview mirror assembly 1, without damaging the original vehicle interior and with a stable installation. The adjustment bracket 18 can flexibly adjust the spatial position and spatial angle of the eyepiece 21 to adapt to the vision needs of different drivers. At the same time, the posture is reliably locked to avoid the eyepiece 21 shifting or the image shaking due to vehicle bumps. While ensuring simple installation and strong versatility, it effectively improves the accuracy of blind spot observation and the stability of use.

[0032] In some embodiments of this example, the adjusting bracket 18 includes a first ball hinge 19, a second ball hinge 22, and a support rod 23. The first ball hinge 19 includes a first hinge seat 29 and a first ball head 27. The second ball hinge 22 includes a second hinge seat 26 and a second ball head 25. The first ball head 27 can rotate relative to the first hinge seat 29 and can be locked in a rotating state. The second ball head 25 can rotate relative to the second hinge seat 26 and can be locked in a rotating state. The two ends of the support rod 23 are fixedly connected to the first ball head 27 and the second ball head 25, respectively. The first hinge seat 29 is fixedly connected to the support seat, and the second hinge seat 23 is fixedly connected to the support seat. 26 is fixedly connected to the eyepiece 21; utilizing the omnidirectional rotation and attitude locking functions of the first ball hinge 19 and the second ball hinge 22, the eyepiece 21 can be adjusted in a wide range and with precision in three-dimensional space, accurately adapting to the line of sight and observation angle of different drivers, ensuring that the reflected light path in the blind spot is clearly aligned with the human eye; at the same time, the first ball hinge 19 and the second ball hinge 22, together with the support rod 23, form a stable rigid support, which can effectively keep the eyepiece attitude from shifting and the image from shaking when the vehicle is moving bumpily, taking into account both adjustment flexibility and usage stability, with a simple and reliable structure that is easy for the driver to adjust quickly.

[0033] In this embodiment, components such as the eyepiece mount 20, the first hinge mount 29, and the second hinge mount 26 are injection molded from ABS plastic with a sandblasted surface treatment, replacing the original 45# steel and aluminum plate. The overall weight is reduced from 320g to 180g, a reduction of 44%, and the cost is reduced by 30%. Vibration testing shows that it meets the requirements of GB / T 2423.10 standard and is suitable for weight-sensitive applications.

[0034] In some embodiments of this example, the support base includes a fixed base, a rotating disk 16, and a rotation locking member. The rotating disk 16 is rotatably connected to the fixed base around the rotation axis to adjust the circumferential angle of the eyepiece 21 around the rotation axis. The rotation locking member is disposed between the fixed base and the rotating disk 16 to lock the rotation angle of the rotating disk 16 relative to the fixed base. One end of the adjusting bracket 18 is fixedly connected to the surface of the rotating disk 16 away from the fixed base. By providing a circumferentially rotatable and lockable rotating disk 16 on the support base, the circumferential angle of the eyepiece 21 can be coarsely adjusted and positioned before the fine adjustment of the first ball hinge 19 and the second ball hinge 22, so that the eyepiece 21 can be quickly aligned with the reflected light path of the objective lens 9, greatly improving the convenience of initial installation and daily adjustment. With the rotation locking member, the rotating disk 16 can be reliably locked to prevent the angle deviation caused by vehicle driving vibration, improve the optical path alignment efficiency, and further enhance the overall installation and use stability. In addition, the adjusting bracket 18 is not only used for static calibration, but also to compensate for dynamic optical path deviations introduced by rearview mirror adjustment, door opening and closing, etc.

[0035] In some embodiments of this example, the mounting base includes a composite base plate 13, a supporting base plate 12, and a connecting seat that are stacked and fixedly connected in sequence. The surface of the composite base plate 13 away from the supporting base plate 12 is used to bond and fix it to the surface of the rearview mirror assembly 1 facing the driver's cabin. The side of the connecting seat away from the supporting base plate 12 is rotatably connected to the rotating disk 16. By reliably bonding the composite base plate 13 to the housing of the rearview mirror assembly 1, it is ensured that the overall installation is firm and not easy to fall off. At the same time, the supporting base plate 12 and the connecting seat can provide stable rotational support for the rotating disk 16, so that the eyepiece 21 can be adjusted smoothly without shaking. Meanwhile, the layered structure takes into account the bonding strength, structural rigidity, and rotational fit accuracy, improving the durability and adjustment reliability of the device in the bumpy environment of the vehicle.

[0036] The mounting base also includes at least one set of latching assemblies, namely a first latch 17 and a second latch 14. The first latch 17 includes a latch cap 39, a compression spring 38, a latch pin 35, and a locking screw 37. The latch cap 39 is fixedly installed on the side of the support base plate 12. The latch cap 39 has an axial through hole that extends axially and communicates with the outside. The side of the latch cap 39 has a radial screw hole that communicates perpendicularly with the axial through hole. The compression spring 38 is a compression spring and is housed in the axial through hole. The latch pin 35 passes through the axial through hole, and the tail of the latch pin 35 is connected to the compression spring 38. The end of 8 abuts, and the snap fastener 35 can reciprocate along the axial through hole; the head end face of the snap fastener 35 is evenly distributed with anti-slip teeth 34 in the circumferential direction, and the anti-slip teeth 34 are used to abut and cooperate with the mounting frame of the rearview mirror assembly 1; the locking screw 37 is screwed into the radial screw hole, and the screw end of the locking screw 37 can radially press against the outer wall of the shank of the snap fastener 35 to lock the axial position of the snap fastener 35 by static friction; the compression spring 38 is always in a pre-compressed state, and applies a continuous axial pushing force to the snap fastener 35 in the natural state, so that the snap fastener 35 has a tendency to extend outward. During installation, the clip 35 is compressed inward and inserted into the mounting frame of the rearview mirror assembly 1. After being released, the clip 35 automatically extends outward under the elastic return action of the compression spring 38, so that the anti-slip teeth 34 on its head tightly abut against and press against the mounting frame of the rearview mirror assembly, achieving an elastic adaptive fit with the rearview mirror frame, ensuring a firm installation that is not easily loosened. The structure of the first clip 17 and the second clip 14 is the same, and the structure of the second clip 14 will not be described again here.

[0037] This embodiment optimizes the snap-fit ​​assembly to a magnetic type. The supporting base plate 12 has four built-in N35 neodymium magnets, and the composite base plate 13 has a built-in magnetic conductive sheet. During installation, simply bring the supporting base plate 12 close to the composite base plate 13; the magnetic force automatically attracts and positions the device, eliminating the need for pressing. Testing shows that the attraction force reaches 35N, meeting vibration requirements, making disassembly and assembly more convenient, and suitable for scenarios such as shared cars and rental vehicles that require frequent disassembly and assembly.

[0038] In some embodiments of this example, the composite base plate 13 includes a first support plate 33, a pressure-sensitive adhesive layer 32, a second support plate 31, and a double-sided adhesive layer 30, which are stacked and bonded together in sequence. The double-sided adhesive layer 30 is used to bond and fix to the surface of the rearview mirror assembly 1, and the first support plate 33 is used to fix and connect to the support base plate 12. The compression rate of the pressure-sensitive adhesive layer is 20%~40%. The composite base plate 13 structure, which is formed by stacking the first support plate 33, the pressure-sensitive adhesive layer 32, the second support plate 31, and the double-sided adhesive layer 30, combined with the pressure-sensitive adhesive layer 32 with a compression rate of 20%~40%, not only improves the overall rigidity and flatness through the double-layer support plate, ensuring that the support base is installed stably and without deformation, and reducing the shaking of the eyepiece 21, but also enables non-destructive bonding installation through the double-sided adhesive layer 30, taking into account the bonding firmness, shock absorption and buffering effect, and installation convenience, thereby improving the stability and service life of the device in the bumpy environment of the vehicle.

[0039] In some embodiments of this example, the objective lens 9 includes an objective lens and a backing 10. The objective lens can reflect light emitted from at least the blind spot of the A-pillar 7 on either side of the vehicle. The backing 10 is attached to the surface of the objective lens away from its reflective surface and is used to attach the objective lens to the outer surface of the front triangular window glass 3 on either side of the vehicle. In this embodiment, the objective lens 9 is a plane mirror with both reflection and transmission functions, used to reflect environmental images to the eyepiece 21 without affecting the driver's normal transmission observation of the outside world. The objective lens 9 is made of PMMA acrylic material, with a UV-cured primer spin-coated on the surface, followed by the deposition of a 100-120nm silver layer, and then a 50-70nm SiO2 dielectric layer to control the spectral ratio. This design can achieve a 50 / 50 or 30 / 70 reflection / transmission optical effect with a color reproduction rate of 98%. The backing 10 uses Dow Corning 3-1953 optically transparent adhesive, evenly coated to a thickness of 0.2mm, for attaching and mounting the objective lens 9. The attachment target is the outer surface of the front triangular window glass 3. The backing 10 is covered with a PET release film, which is removed before use. The coated surface of the objective lens is covered with a protective film 8, a high-transparency PET protective film, used to prevent scratches and facilitate cleaning.

[0040] Example 2 This embodiment provides a vehicle, including a body and the vehicle A-pillar blind spot elimination device of Embodiment 1. A rearview mirror assembly 1 is provided on either side of the body, that is, on both the left and right sides when the vehicle is in motion.

[0041] Specific usage steps: Step 1: Preparations before installation First, confirm that the dimensions of the front quarter window glass 3 of this model are 150mm × 80mm, and the inner side of the rearview mirror assembly 1 is an arc surface with a radius of curvature of approximately 200mm. Prepare the following tools: isopropyl alcohol cleaner, lint-free cloth, silicone scraper, heat gun, plastic pry bar, and torque screwdriver.

[0042] Step 2: Objective lens assembly installation (1) Use a lint-free cloth soaked in isopropyl alcohol to carefully wipe the central area (approximately 100 mm in diameter) of the outer surface of the front triangular window glass 3 to remove fingerprints, oil stains, and dust. After visually inspecting to confirm that there are no particulate residues, let it stand for 2 minutes to allow the isopropyl alcohol to evaporate completely.

[0043] (2) Take the objective lens assembly 6 (size 80mm×50mm×2mm, semi-reflective and semi-transparent ratio 50 / 50), peel off the PET release film on the surface of the backing 10 to expose a 0.2mm thick optical transparent adhesive layer.

[0044] (3) Align the objective lens 9 with the center of the front triangular window glass 3 slightly below the center (about 20mm from the lower edge), and after ensuring that the objective lens 9 is placed horizontally, attach it to the glass surface in one go. Be careful to avoid repeated adjustments to prevent air bubbles from forming in the adhesive layer.

[0045] (4) Use a silicone squeegee to apply pressure evenly from the center of the objective lens outwards, with the force controlled at 10-15N, to remove any residual air between the adhesive layer and the glass. After confirming that there are no air bubbles remaining, the application is complete.

[0046] (5) Let stand for 24 hours to allow the optically transparent adhesive to fully cross-link and cure. After curing, test the bonding strength, which should reach 20 N / cm or more, meeting the design requirements.

[0047] Step 3: Composite base plate installation (1) Clean the designated area on the inside of the rearview mirror assembly with isopropyl alcohol (located in the front area on the inside of the mirror housing, approximately 60mm × 40mm in size) to ensure the surface is clean and dry.

[0048] (2) Take the composite base plate (50mm×35mm, four-layer structure) and remove the PET release film of the bottom double-sided adhesive.

[0049] (3) Align the composite base plate with the cleaned area, ensuring that the card hole faces the driver, and attach it to the inner side of the rearview mirror assembly in one go.

[0050] (4) Apply 20N pressure and press for 20 seconds to ensure that the double-sided adhesive is fully adhered to the curved surface. Due to the good flexibility of the acrylic layer of the composite base plate, it can perfectly adhere to the curved surface with a curvature radius of 200mm without any edge lifting.

[0051] Step 4: Adjust the bracket installation (1) Take the support base plate 12 assembly (pre-installed with the first ball hinge, rotating seat and two buckles) and check whether each moving part is flexible: the first ball hinge 19 can rotate freely within a range of ±20°, the rotating disk 16 can rotate within a range of 360°, and the damping is moderate.

[0052] (2) Weld the second hinge seat 26 onto the rotating disk 16, and use the second nut 24 to tighten the second ball head 25, with the torque set to 2.5 N·m.

[0053] (3) Weld the eyepiece mount 20 onto the first hinge mount 29, and use the first nut 28 to tighten the first ball head 27 with a torque of 2.5 N·m.

[0054] (4) Insert both ends of the support rod 23 into the hinge ball holes of the first ball hinge 19 and the second ball hinge 22 respectively, and fix them by welding to ensure a firm connection.

[0055] (5) Attach the eyepiece 21 to the front of the eyepiece base 20 with 3M VHB double-sided tape, ensuring that the eyepiece 21 is horizontal and centered.

[0056] Step 5: Install eyepiece assembly 2 (1) Take an EPDM foam strip (2mm thick, 5mm wide), peel off the double-sided adhesive protective film on the back, and attach it around the edge of the support base plate 12 to form a sealed buffer layer.

[0057] (2) Align the support base plate 12 assembly with the composite base plate 13, so that the first buckle 17 and the second buckle 14 are respectively aligned with the two snap-fit ​​holes on the composite base plate 13.

[0058] (3) Apply a vertical downward pressure of about 50N (about 5kg) and hear two crisp "click" sounds to confirm that the first buckle 17 and the second buckle 14 are engaged. Tighten the locking screw.

[0059] (4) Gently shake the support base plate 12 by hand to check the connection firmness. After confirming that there is no looseness, the installation is completed.

[0060] Step Six: Optical Adjustment (1) The driver sits normally in the driver's seat, adjusts the seat to a comfortable position, and looks ahead.

[0061] (2) Loosen all locking mechanisms (first nut 28, second nut 24, knurled screw 15) and enter adjustment mode.

[0062] (3) Make a preliminary observation of the objective lens reflection image and determine the deviation between the image position and the blind area.

[0063] (4) Make preliminary adjustments based on the principles of geometric optics: Move eyepiece 21 appropriately along the positive X-axis (to the right), and observe that the image rotates counterclockwise, with the field of view gradually widening. It is estimated that for every 5mm movement, the image rotates approximately 1°. Rotate the eyepiece 21 counterclockwise around the Z-axis appropriately, and observe that the image rotates further counterclockwise. The rotation angle of the image is about twice the rotation angle of the eyepiece 21. Rotate the eyepiece 21 downwards appropriately to observe the image moving upwards. For every 3° of downward tilt, the image moves upwards by approximately 50mm-60mm.

[0064] (5) Repeatedly fine-tune each degree of freedom until the complete blind spot image of the left A-pillar 7 is clearly displayed in the eyepiece 21 (covering the area from the left side of the front of the car to the left edge of the driver's line of sight).

[0065] (6) Lock each locking mechanism: First, tighten the knurled screw 15 (torque 1.5 N·m), then tighten the two first nuts 28 and the second nuts 24 (torque 2.5 N·m).

[0066] (7) Final confirmation: When the driver is looking straight ahead normally, the complete image of the area outside the left A-pillar 7 can be clearly seen through the eyepiece 21, including pedestrians, non-motorized vehicles, road obstacles, etc. The image is without distortion, without ghosting, and the colors are realistically reproduced.

[0067] The vehicle is symmetrical on both sides. The objective lens assembly is attached to the right front quarter window glass, and the eyepiece assembly is installed on the inner side of the right rearview mirror assembly. During optical adjustment, the adjustment direction is opposite to that on the left: the eyepiece is moved to the left, rotated clockwise, etc., to achieve accurate presentation of the right blind spot image.

[0068] According to SAE J941 standards, the driver's eye point distribution range covers individuals from the 5th percentile of women to the 95th percentile of men, with an anterior-posterior difference of approximately 150mm and an anatomical difference of approximately 100mm. Through geometric optics calculations, the eyepiece assembly can achieve an adjustment range of no less than ±20° horizontally and no less than ±15° vertically, thus covering over 99% of driver body shape differences and compensating for rearview mirror positional variations within ±15°. The ball joint features a built-in damping structure, ensuring smooth adjustment and a one-button locking mechanism after adjustment, eliminating the risk of displacement during driving.

[0069] Actual measurements show that blind spot coverage is improved by more than 80%, image color reproduction reaches 98%, and distortion rate is less than 1%, ensuring accurate transmission of direction and distance.

[0070] To further verify the invention's ability to compensate for dynamic optical path deviations, the following tests were conducted after initial debugging: (1) Simulate driver adjusting rearview mirror: Adjust the rearview mirror assembly to the extreme positions of up, down, left and right respectively (adjustment range refers to the actual vehicle user manual); (2) Observe the changes in the image: It was found that when the position of the rearview mirror changed, the blind spot image in the eyepiece shifted slightly, specifically the image as a whole moved in the opposite direction; (3) Dynamic compensation adjustment: Loosen all locking mechanisms and adjust the adjustment bracket in the opposite direction according to the image offset direction—if the image shifts downward, adjust the eyepiece tilt angle; if the image shifts to the left, move the eyepiece appropriately along the X-axis. The adjustment amount is estimated with reference to the formula in the "Optical Adjustment Principle" section; (4) Repeat the above process until the complete blind spot image can be clearly displayed in the eyepiece within the commonly used working position range of the rearview mirror; (5) Lock each locking mechanism and complete the final calibration.

[0071] Test results show that by adjusting the multi-degree-of-freedom adjustment of the bracket, the present invention can effectively compensate for the dynamic optical path deviation caused by the change of the rearview mirror position, ensuring that the blind spot image remains stable and clear under the personalized rearview mirror settings of different drivers.

[0072] Road test (1) Urban road test: When passing through intersections and pedestrian crossings at speeds of 30-50 km / h, the eyepiece image is stable and shake-free, and pedestrians and non-motorized vehicles in the left blind spot can be clearly observed, effectively avoiding the risk of "ghost peek".

[0073] (2) Highway test: When changing lanes and overtaking at speeds of 80-120 km / h, the eyepiece image is clear and stable, and the distance and speed of vehicles in the left lane can be accurately judged without image delay or blurring.

[0074] (3) Bumpy road test: When passing through speed bumps and potholes, the eyepiece image does not shake significantly, the buckle connection is firm, the ball hinge is locked reliably, and there is no displacement.

[0075] (4) Night test: In sections of road without streetlights, the eyepiece can still form a clear image by relying on the lights of vehicles behind, and the brightness meets the usage requirements.

[0076] Disassembly and maintenance (1) Eyepiece assembly disassembly: Insert a plastic pry bar into the edge of the buckle and pry gently. After hearing a "click" sound, the buckle will unlock and the support base plate will separate from the composite base plate.

[0077] (2) Disassembly of objective lens assembly: Use a hot air gun set to 80°C to heat the edge of the objective lens evenly for 1 minute. Use a plastic pry bar to slowly pry along the edge to separate the objective lens from the glass.

[0078] (3) Residual adhesive layer treatment: Use isopropyl alcohol-soaked lint-free cloth to wipe the residual optical transparent adhesive on the glass surface, or use 3M adhesive remover to quickly dissolve and remove it.

[0079] (4) Reinstallation: Reinstall according to the above steps. The clips can be reused, but the double-sided adhesive of the composite base plate needs to be replaced after one-time use.

[0080] Visual permeability verification After installation, a comparative test was conducted on the field of vision between the device of this invention and the existing A-pillar mirror frame solution. Test method: The driver sits normally in the driver's seat and observes the standard reference object on the left side (a pole 5 meters away from the vehicle and 1.5 meters high) through the windshield, recording the degree to which the reference object is obstructed.

[0081] Test results: The existing A-pillar mirror frame design: The mirror frame and mirror surface obstruct the left side of the windshield, partially blocking reference points, requiring the driver to move their head to see the entire area. This invention features an objective lens attached to the edge of the triangular window, which does not obstruct the main field of view of the front window; its semi-reflective and semi-transparent design maintains transmission function, ensuring that the reference object is fully visible without any additional obstruction. The results show that the present invention eliminates the blind spot of the A-pillar without creating new visual obstruction, achieving better visual transparency than existing solutions.

[0082] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A vehicle A-pillar blind spot elimination device, characterized in that: Includes objective lens assembly and eyepiece assembly; An objective lens assembly, comprising an objective lens for attaching to the outer surface of the front triangular window glass on either side of the vehicle body, and the objective lens being capable of receiving and reflecting light emitted from the blind spot of the A-pillar on that side of the vehicle body; An eyepiece assembly, comprising an eyepiece located on the same side of the vehicle body as the objective lens and for connection to the side surface of the rearview mirror assembly facing the driver's cabin, wherein the eyepiece is capable of receiving and reflecting light reflected by the objective lens to the driver in the driver's seat.

2. The vehicle A-pillar blind spot elimination device according to claim 1, characterized in that: When the objective lens is fixedly installed on the outer surface of the front triangular window glass of the vehicle, the objective lens is a semi-reflective semi-transparent lens, so as to reflect light emitted from the blind spot of the A-pillar while transmitting ambient light.

3. The vehicle A-pillar blind spot elimination device according to claim 1, characterized in that: The eyepiece assembly also includes an adjustment component, which connects the eyepiece to the side surface of the rearview mirror assembly facing the cockpit and is capable of adjusting and locking the spatial position and spatial angle of the eyepiece.

4. The vehicle A-pillar blind spot elimination device according to claim 3, characterized in that: The adjustment assembly includes an adjustment bracket and a support base. The support base is used to adhere to the side surface of the rearview mirror assembly facing the cockpit. One end of the adjustment bracket is connected to the support base, and the other end of the adjustment bracket is connected to the eyepiece. The adjustment bracket can adjust and lock the spatial position and spatial angle of the eyepiece.

5. The vehicle A-pillar blind spot elimination device according to claim 4, characterized in that: The adjustment bracket includes a first ball joint, a second ball joint, and a support rod. The first ball joint includes a first hinge seat and a first ball head. The second ball joint includes a second hinge seat and a second ball head. The first ball head can rotate relative to the first hinge seat and can be locked in a rotating state. The second ball head can rotate relative to the second hinge seat and can be locked in a rotating state. The two ends of the support rod are fixedly connected to the ball heads of the first ball joint and the second ball joint, respectively. The hinge seat of the first ball joint is fixedly connected to the support seat, and the hinge seat of the second ball joint is fixedly connected to the eyepiece.

6. The vehicle A-pillar blind spot elimination device according to claim 4, characterized in that: The support base includes a fixed base, a rotating disk, and a rotation locking member. The rotating disk is rotatably connected to the fixed base about a rotation axis to adjust the circumferential angle of the eyepiece about the rotation axis. The rotation locking member is disposed between the fixed base and the rotating disk to lock the rotation angle of the rotating disk relative to the fixed base. One end of the adjustment bracket is fixedly connected to the surface of the rotating disk away from the fixed base.

7. The vehicle A-pillar blind spot elimination device according to claim 6, characterized in that: The mounting base includes a composite base plate, a supporting base plate, and a connecting seat that are stacked and fixedly connected in sequence. The side surface of the composite base plate away from the supporting base plate is used to be bonded and fixed to the side surface of the rearview mirror assembly facing the cockpit. The side of the connecting seat away from the supporting base plate is rotatably connected to the rotating disk.

8. The vehicle A-pillar blind spot elimination device according to claim 7, characterized in that: The composite base plate includes a first support plate, a pressure-sensitive adhesive layer, a second support plate, and a double-sided adhesive layer that are stacked and bonded together in sequence; the double-sided adhesive layer is used to bond and fix to the surface of the rearview mirror assembly, and the first support plate is used to fix and connect to the support base plate; the compression rate of the pressure-sensitive adhesive layer is 20%~40%.

9. The vehicle A-pillar blind spot elimination device according to claim 1, characterized in that: The objective lens includes an objective lens and a backing. The objective lens is capable of reflecting light emitted from the blind spot of the A-pillar on either side of the vehicle. The backing is attached to the surface of the objective lens away from its reflective surface and is used to attach the objective lens to the outer surface of the front triangular window glass on either side of the vehicle.

10. A vehicle, characterized in that, The vehicle includes a vehicle body and the vehicle A-pillar blind spot elimination device as described in any one of claims 1-9, wherein the rearview mirror assembly is provided on either side of the vehicle body, i.e., on both the left and right sides when the vehicle is in motion.

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