Quick-mounting flow guide structure of vehicle-mounted laser radar protective lens and use method thereof

Abstract

The application relates to the technical field of vehicle-mounted laser radar protection, and discloses a quick-mounting flow guide structure of a vehicle-mounted laser radar protection lens and a use method thereof, which comprises a vehicle-mounted laser radar assembly, a fixed adapter, a reserved mounting base, a protection lens and a detachable interlocking unit. The protection lens is connected with the reserved mounting base through the detachable interlocking unit. The detachable interlocking unit comprises two-side narrow-face interlocking areas and front-rear locking connection areas, so that an air exchange channel is formed between the protection lens and a laser radar window. During vehicle driving, air enters a sandwiched space through the two-side narrow-face interlocking areas and carries away water vapor. The protection lens can be quickly disassembled and assembled, the driving airflow is used to reduce the risk of sandwiched space fogging, and the protection reliability of the laser radar is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of vehicle-mounted laser radar protection, in particular to a quick-mounting flow guide structure of a vehicle-mounted laser radar protection lens and a use method thereof. BACKGROUND

[0002] With the development of new energy vehicles and intelligent driving technologies, vehicle-mounted laser radars gradually become important components in vehicle environment perception systems. Laser radars realize the detection of the environment around the vehicle by emitting and receiving laser signals, and the optical window of the laser radar is an important component for transmitting laser signals and is exposed to the external environment of the vehicle for a long time.

[0003] In the actual use of the vehicle, the vehicle-mounted laser radar window is easily affected by rain, dust, sand, insect glue, ice and snow, and impact generated during high-speed driving of the vehicle. When the surface of the laser radar window is contaminated or scratched, the emission and reception of laser signals will be affected, and the detection accuracy of the laser radar will be reduced.

[0004] In order to improve the protection capability of the laser radar window, protective lens structures installed outside the laser radar have appeared on the market at present, which add a transparent protective layer outside the original laser radar window to reduce the influence of external environmental factors on the laser radar.

[0005] The existing vehicle-mounted laser radar protection lens mainly adopts the following installation methods:

[0006] The first is a glue fixing method.

[0007] This method directly fixes the protective lens on the periphery of the laser radar window by using double-sided adhesive, structural adhesive and other adhesive materials.

[0008] Although this method is simple in structure, since the protective lens is permanently connected with the vehicle, when the protective lens is worn, contaminated or needs to be replaced, the disassembly process is difficult, residual glue is easily generated, the appearance of the vehicle is affected, and the protective lens cannot be repeatedly replaced.

[0009] The second is a mechanical buckle or bracket fixing method.

[0010] This method realizes the installation of the protective lens by using buckles, screws or special brackets.

[0011] Although the mechanical connection method improves the installation reliability, it usually needs to set up a complex installation structure, and the outer shape size and installation space of the laser radar of different vehicle models are different, different brackets need to be designed for different vehicle models, resulting in poor product universality.

[0012] The third is a completely sealed protective structure.

[0013] The mode forms a closed space between the protective lens and the laser radar window through a sealing rubber strip or a sealing ring.

[0014] Although complete sealing can reduce the entry of external pollutants, when the vehicle is in an environment with temperature changes, water vapor condensation is easily generated inside the interlayer, resulting in fogging on the surface of the protective lens or the laser radar window, affecting the transmission of laser signals.

[0015] In addition, the protective lens in the prior art usually only focuses on fixing reliability or sealing performance, and ignores the use of air flow during vehicle driving. When the vehicle is driving at high speed, there is continuous air flow around the vehicle body. If the air flow can be reasonably utilized to form dynamic air exchange between the protective lens and the laser radar window, the accumulation of water vapor inside the interlayer can be effectively reduced.

[0016] Therefore, the prior art still lacks a vehicle-mounted laser radar protective lens structure suitable for the after-market, which can realize quick installation and disassembly of the protective lens, retain the vehicle end mounting base, and utilize the natural air flow generated during vehicle driving to realize interlayer dehumidification. SUMMARY

[0017] In view of the deficiencies of the prior art, the present application provides a quick-mounting flow guide structure of a vehicle-mounted laser radar protective lens and a method for using the same, which solves the problems of difficult disassembly, inability to replace repeatedly, poor installation structure adaptability and easy accumulation of water vapor inside the interlayer of the existing vehicle-mounted laser radar protective lens.

[0018] To achieve the above object, the present application is implemented by the following technical scheme: a quick-mounting flow guide structure of a vehicle-mounted laser radar protective lens and a method for using the same, comprising a vehicle-mounted laser radar assembly, a fixed adapter piece, a reserved mounting base, a protective lens and a detachable interlocking unit arranged between the protective lens and the reserved mounting base.

[0019] Among them:

[0020] The fixed adapter piece is arranged around the laser radar window of the vehicle-mounted laser radar assembly and is used to provide an installation connection base;

[0021] The reserved mounting base is fixedly arranged on the fixed adapter piece and maintains an installation relationship with the vehicle-mounted laser radar assembly;

[0022] The protective lens is arranged outside the laser radar window and is used to protect the laser radar window;

[0023] The protective lens is connected with the reserved mounting base through the detachable interlocking unit, so that the protective lens can be installed and disassembled relative to the reserved mounting base.

[0024] Further,

[0025] The detachable interlocking unit adopts a mushroom head interlocking structure, including a first interlocking part and a second interlocking part that cooperate with each other.

[0026] During installation, the first interlocking part and the second interlocking part are elastically deformed and embedded in each other by pressing, thereby realizing quick connection between the protective lens and the retaining installation base.

[0027] During disassembly, the interlocking structure is disconnected by applying a separating directional force, realizing quick disassembly of the protective lens.

[0028] Further,

[0029] The detachable interlocking unit includes a lateral air exchange structure.

[0030] The lateral air exchange structure is arranged at the lateral connection area of the protective lens and the retaining installation base, forming an air flow path between the protective lens and the laser radar window after installation.

[0031] Preferably,

[0032] The lateral air exchange structure includes two side narrow face interlocking areas arranged at the two side edge positions of the protective lens.

[0033] The connection width of the two side narrow face interlocking areas is smaller than that of the front and rear connection areas, so that the two side areas form an air exchange channel while maintaining the connection function.

[0034] Further,

[0035] The detachable interlocking unit further includes a front and rear locking connection area.

[0036] The front and rear locking connection area is used to improve the connection stability between the protective lens and the retaining installation base, so that the protective lens can withstand the vibration, impact and air resistance during high-speed driving of the vehicle.

[0037] Further,

[0038] After the protective lens is installed, a sandwich space is formed between the protective lens and the laser radar window.

[0039] During vehicle operation, external air enters the sandwich space through the two side narrow face interlocking areas, and carries away the water vapor generated inside the sandwich under the action of air flow.

[0040] Further technical solutions

[0041] In different embodiments,

[0042] The detachable interlocking unit can be arranged as two-side fixed, three-side fixed or four-side fixed according to the laser radar structure of the vehicle type.

[0043] When the vehicle type has complete installation space, a four-side distributed interlocking structure can be used to improve the connection stability.

[0044] When the installation space of the vehicle type is limited, a two-side or three-side interlocking structure can be used to improve the vehicle type adaptation capability.

[0045] The mushroom head interlocking structure can select different connection densities according to the vehicle use environment to balance the disassembly convenience and connection strength.

[0046] The application provides a quick-mounting flow guide structure of a vehicle-mounted laser radar protective lens and a use method thereof.

[0047] 1. The quick-mounting flow guide structure of the vehicle-mounted laser radar protective lens has the beneficial effects that: the protective lens can be quickly mounted and dismounted through the reserved mounting base and the detachable interlocking unit, the reserved mounting base is fixedly mounted on the vehicle-mounted laser radar assembly, the protective lens forms a repeatable connection relationship with the reserved mounting base through the detachable interlocking unit, when the protective lens is worn, contaminated or needs to be replaced, the replacement can be completed by only releasing the connection between the protective lens and the detachable interlocking unit, without the need to remove the vehicle end mounting structure, thereby reducing the maintenance difficulty and improving the use convenience of the after-market product.

[0048] 2. The quick-mounting flow guide structure of the vehicle-mounted laser radar protective lens has the beneficial effects that: the lateral air exchange structure is arranged in the detachable interlocking unit, a dynamic air flow path is formed between the protective lens and the laser radar window, the water vapor in the interlayer is discharged by using the airflow generated by the vehicle driving, the lateral ventilation channel is formed in the two-side narrow interlocking area while ensuring the reliability of the protective lens, during the vehicle driving, the external air can enter the interlayer space formed between the protective lens and the laser radar window and drive the accumulated water vapor in the interlayer to be discharged, thereby reducing the risk of fogging caused by water vapor condensation in the temperature difference environment and improving the laser radar signal transmission stability.

[0049] 3. The quick-mounting flow guide structure of the vehicle-mounted laser radar protective lens has the beneficial effects that: the non-fully sealed dynamic flow guide structure is adopted to ensure the mounting stability of the protective lens, improve the adaptability of the product to different vehicle types and different use environments, the traditional full sealing structure is not needed, different layout modes of the detachable interlocking unit are used, the two-side fixed, three-side fixed or multi-side fixed modes are selected according to the peripheral structure of the laser radar of different vehicle types, the interlocking area layout considers the fixing strength and air exchange demand, and the versatility and reliability of the after-market protective lens product are improved. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 It is a perspective view of the quick-mounting flow guide structure of the vehicle-mounted laser radar protective lens.

[0051] Figure 2 It is a quick-mounting flow guide structure profile structure schematic view of a quick-mounting flow guide structure of a vehicle-mounted laser radar protective lens of the present application.

[0052] Figure 3 It is Figure 2 It is a local enlarged structure schematic view at A in the middle.

[0053] Figure 4 It is an exploded schematic view of a quick-mounting flow guide structure of a vehicle-mounted laser radar protective lens of the present application.

[0054] Figure 5 It is a protective lens back surface structure schematic view of a quick-mounting flow guide structure of a vehicle-mounted laser radar protective lens of the present application.

[0055] Figure 6 It is Figure 5 It is a local enlarged structure schematic view at B in the middle.

[0056] Among them, 1, vehicle-mounted laser radar assembly; 101, laser radar window; 2, reserved mounting base; 3, fixed adapter piece; 4, protective lens; 201, detachable interlocking unit; 202, two-side narrow face interlocking area; 203, front and rear locking connection area. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0058] Embodiment one:

[0059] As Figures 1 to 6 shown, the present embodiment provides a quick-mounting flow guide structure of a vehicle-mounted laser radar protective lens, which comprises a vehicle-mounted laser radar assembly 1, a laser radar window 101, a reserved mounting base 2, a fixed adapter piece 3, a protective lens 4 and a detachable interlocking unit 201.

[0060] Among them, the vehicle-mounted laser radar assembly 1 is the original laser radar device of the vehicle, and the outer side thereof is provided with the laser radar window 101 for laser signal emission and reception.

[0061] The fixed adapter piece 3 is installed at the peripheral area of the vehicle-mounted laser radar assembly 1, and is used for providing the installation basis of the protective lens 4. The reserved mounting base 2 is fixedly arranged on the fixed adapter piece 3, and is retained on the vehicle-mounted laser radar assembly 1 for a long time after installation.

[0062] The protective lens 4 is arranged outside the laser radar window 101 and is used for protecting the laser radar window 101.

[0063] The protective lens 4 and the reserved mounting base 2 are provided with a detachable interlocking unit 201.

[0064] The detachable interlocking unit 201 adopts a mushroom head interlocking structure and comprises a plurality of mushroom head-shaped interlocking units matched with each other.

[0065] During installation, the protective lens 4 is arranged close to the reserved mounting base 2, the detachable interlocking units 201 are matched with each other, the mushroom head structure is elastically deformed and buckled by applying a pressing force, and the quick connection between the protective lens 4 and the reserved mounting base 2 is realized.

[0066] During disassembly, the mushroom head interlocking structure is unlocked by applying an outward separating force, and the protective lens 4 can be disassembled from the reserved mounting base 2.

[0067] Since the reserved mounting base 2 is fixed on the vehicle, the vehicle end mounting structure does not need to be repeatedly disassembled and assembled when the protective lens 4 is replaced.

[0068] Embodiment two:

[0069] Since the installation positions of the vehicle-mounted laser radar, the shell sizes and the peripheral installation spaces of different vehicle models are different, the embodiment provides an installation mode suitable for different vehicle models.

[0070] For the vehicle model with a large-size laser radar window 101 and a complete installation area in the periphery, a four-side arrangement type mounting structure can be used, that is, the detachable interlocking units 201 are arranged around the reserved mounting base 2, so that the protective lens 4 is uniformly fixed by the circumferential force; the structure is suitable for vehicle models with large installation spaces and high vibration resistance requirements.

[0071] For the case that the peripheral space of the laser radar of some vehicle models is limited and only has a part of the installation surface, a three-side fixing structure can be used; specifically, the detachable interlocking units 201 are arranged in three directions with installation spaces, and auxiliary support is provided on the side where the connecting structure cannot be arranged through the fixed adaptive sheet 3; this way reduces the requirement for the original vehicle structure space and improves the adaptation ability of different vehicle models.

[0072] For the case that the structure of part of the vehicle-mounted laser radar cover is special and only has two opposite mounting surfaces, a bilateral symmetrical fixing structure can be used, that is, two side narrow interlocking areas 202 are arranged on the left and right sides of the protective lens 4, and the protective lens 4 is stably mounted by interlocking connection in two directions; at the same time, the two side narrow interlocking areas 202 form an air exchange path, so that air can enter the interlayer space during vehicle driving.

[0073] Through the above different installation layouts, the same technical solution can be applied to laser radar structures of different vehicle models.

[0074] Embodiment three:

[0075] In order to balance the installation convenience and fixing reliability, the embodiment provides a combination mode of different density mushroom head interlocking structures.

[0076] In one embodiment:

[0077] The detachable interlocking unit 201 adopts a low-density mushroom head interlocking structure.

[0078] The low-density structure has smaller installation resistance, and only a small pressing force is required for the user to complete the connection during installation, which is suitable for use scenarios that require frequent disassembly and replacement of the protective lens 4.

[0079] In another embodiment:

[0080] The detachable interlocking unit 201 adopts a high-density mushroom head interlocking structure.

[0081] The high-density structure has greater connection strength, which can improve the ability of the protective lens 4 to resist vehicle high-speed driving vibration and external impact.

[0082] In another preferred embodiment:

[0083] Different regions of the protective lens 4 adopt different density combinations.

[0084] For example: the front and rear locking connection areas 203 adopt a higher density mushroom head interlocking structure to improve the anti-pulling-off ability in the driving direction of the vehicle.

[0085] The two side narrow interlocking areas 202 adopt a lower density mushroom head interlocking structure to maintain appropriate air exchange ability on both sides.

[0086] Through the above combination mode, a balance between fixing strength and ventilation performance is achieved.

[0087] Embodiment four:

[0088] The embodiment provides a plurality of installation modes between the reserved mounting base 2 and the fixed adapter piece 3.

[0089] The first mode: the fixed adapter piece 3 is installed on the periphery of the vehicle-mounted laser radar assembly 1 by adhesion, which does not need to change the original structure of the vehicle and is suitable for consumers to install by themselves in the after-market.

[0090] The second mode: the fixed adapter piece 3 is installed on the periphery of the vehicle-mounted laser radar assembly 1 by mechanical clamping, which improves the fixing reliability and is suitable for vehicle models that require high mechanical strength.

[0091] The third mode: the fixed adapter piece 3 and the reserved mounting base 2 adopt a combined mounting structure, during installation, the fixed adapter piece 3 is first fixed to the vehicle, then the reserved mounting base 2 is installed, and finally the protective lens 4 is installed, which facilitates later maintenance and component replacement.

[0092] Example five:

[0093] The embodiment provides a quick replacement mode of the protective lens.

[0094] When the protective lens 4 is scratched, contaminated or has reduced light transmission performance after long-term use:

[0095] First, an action force in the disassembly direction is applied to the edge of the protective lens 4, so that the detachable interlocking unit 201 is elastically separated, the connection between the protective lens 4 and the reserved mounting base 2 is released, the old protective lens 4 is removed, the new protective lens 4 is aligned with the reserved mounting base 2, and the new detachable interlocking unit 201 is locked by pressing.

[0096] During the entire replacement process, the fixed adapter piece 3 and the reserved mounting base 2 do not need to be disassembled, so the user does not need to reposition the installation position, thereby improving the replacement efficiency.

[0097] Working principle:

[0098] During installation, the fixed adapter piece 3 is first fixed and installed on the periphery of the vehicle-mounted laser radar assembly 1 using engineering glue, then the reserved mounting base 2 is installed on the fixed adapter piece 3, and the protective lens 4 is connected to the reserved mounting base 2 through the detachable interlocking unit 201.

[0099] The detachable interlocking unit 201 adopts a mushroom head interlocking structure, a plurality of mushroom head structures are clamped with each other to form a stable connection, so that the protective lens 4 can be kept outside the laser radar window 101.

[0100] Unlike the traditional completely sealed structure, the present application does not pursue a completely closed space between the protective lens 4 and the laser radar window 101, but forms an air exchange path by the structure of the detachable interlocking unit 201 itself.

[0101] Among them:

[0102] The two-side narrow interlocking area 202 has small connecting width, which can form lateral air passage while ensuring the connecting strength. During the driving of the vehicle, the relative movement of the air around the vehicle can make the external air enter the interlayer space between the protective lens 4 and the laser radar window 101 through the two-side narrow interlocking area 202. When there is water vapor in the interlayer space due to the change of the environmental temperature, the flowing air can reduce the humidity in the interlayer space and take out the water vapor.

[0103] Therefore, the present application can realize the exchange of a small amount of air to take out the internal water vapor and keep the interlayer dry to reduce the risk of fogging by using the natural air flow generated by the driving of the vehicle.

[0104] Meanwhile, the front and rear locking connecting area 203 provides the main fixing function, so that the protective lens 4 can remain stable under the high-speed driving, vibration and external impact environment of the vehicle.

[0105] When the protective lens 4 needs to be replaced, the disassembly can be completed by only removing the connection of the detachable interlocking unit 201, and the retaining type mounting base 2 continues to be retained on the vehicle, so that the protective lens can be quickly replaced.

[0106] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A quick-installation airflow guiding structure for a vehicle-mounted lidar protective lens, characterized in that, It includes an onboard lidar assembly (1), a fixed adapter plate (3), a reserved mounting base (2), a protective lens (4), and a detachable interlocking unit (201). The fixed adapter (3) is disposed around the laser radar window (101) of the vehicle-mounted laser radar assembly (1), the retainable mounting base (2) is disposed on the fixed adapter (3) and is fixedly connected, and the protective lens (4) is detachably connected to the retainable mounting base (2) through the detachable interlocking unit (201). The detachable interlocking unit (201) includes interlocking connection structures that cooperate with each other to form a reusable connection between the protective lens (4) and the retention mounting base (2); At least a portion of the detachable interlocking unit (201) is provided with an air exchange structure, so that after the protective lens (4) is installed, an air-flowable interlayer space is formed between it and the lidar window (101). The air exchange structure includes a ventilation gap located in the lateral connection area between the protective lens (4) and the retention mounting base (2). The ventilation gap is used to guide external air into the interlayer space during vehicle operation and to allow water vapor in the interlayer space to be discharged with the airflow.

2. The quick-release airflow guiding structure for a vehicle-mounted lidar protective lens according to claim 1, characterized in that, The detachable interlocking unit (201) adopts a mushroom-head interlocking structure, including a first interlocking part disposed on the protective lens (4) and a second interlocking part disposed on the retention mounting base (2); The first interlocking part and the second interlocking part are connected to each other by elastic engagement, so that the protective lens (4) and the retention mounting base (2) form a detachable locking relationship.

3. The quick-release airflow guiding structure for a vehicle-mounted lidar protective lens according to claim 1, characterized in that, The air exchange structure includes two narrow interlocking areas (202) located at the edges of both sides of the protective lens (4). The narrow interlocking areas (202) on both sides form a lateral air exchange path, allowing air to circulate between the protective lens (4) and the retaining mounting base (2).

4. The quick-release airflow guiding structure for a vehicle-mounted lidar protective lens according to claim 3, characterized in that, The detachable interlocking unit (201) also includes a front and rear locking connection area (203) disposed in the front and rear direction of the protective lens (4). The front and rear locking connection area (203) is used to improve the connection stability between the protective lens (4) and the retention mounting base (2), and to improve the vibration resistance and detachment resistance of the protective lens (4) during vehicle operation.

5. The quick-release airflow guiding structure for a vehicle-mounted lidar protective lens according to claim 1, characterized in that, A sandwich space is formed between the protective lens (4) and the lidar window (101); The interlayer space is used to accommodate the air between the protective lens (4) and the lidar window (101), and the air exchange structure enables airflow.

6. The quick-release airflow guiding structure for a vehicle-mounted lidar protective lens according to claim 1, characterized in that, After installation, the retainable mounting base (2) remains fixed on the vehicle-mounted lidar assembly (1); When the protective lens (4) needs to be replaced, only the connection between the protective lens (4) and the detachable interlocking unit (201) is disconnected, without removing the retaining mounting base (2).

7. The quick-release airflow guiding structure for a vehicle-mounted lidar protective lens according to claim 1, characterized in that, The protective lens (4) is made of transparent optical materials, including glass, transparent polymer materials or composite light-transmitting materials; The protective lens (4) is used to cover the lidar window (101) and allow the laser signal to pass through.

8. The quick-release airflow guiding structure for a vehicle-mounted lidar protective lens according to claim 1, characterized in that, The detachable interlocking unit (201) is distributed along the edge region of the protective lens (4); The detachable interlock unit (201) is configured as a two-sided fixed structure, a three-sided fixed structure, or a four-sided fixed structure according to the external installation space of the vehicle-mounted lidar assembly (1).

9. The quick-release airflow guiding structure for a vehicle-mounted lidar protective lens according to claim 1, characterized in that, The ventilation gap is equipped with a dustproof structure; The dustproof structure allows air to pass through while reducing the possibility of external dust and particles entering the interlayer space between the protective lens (4) and the lidar window (101).

10. A quick-installation airflow guiding structure for a vehicle-mounted lidar protective lens and its method of use, characterized in that, A quick-release airflow guiding structure for a vehicle-mounted lidar protective lens according to claims 1-9 includes the following steps: S1. Install and fix the adapter plate: The fixing adapter (3) is installed in the outer area of ​​the lidar window (101) of the vehicle lidar assembly (1) so that the fixing adapter (3) and the vehicle lidar assembly (1) are fixedly connected. S2. Installation of a retainable mounting base: Install the retaining mounting base (2) onto the fixing adapter (3) so that the retaining mounting base (2) remains fixed to the vehicle-mounted lidar assembly (1); S3. Quick installation of protective lens: Bring the protective lens (4) close to the retention mounting base (2) so that the detachable interlocking unit (201) on the protective lens (4) and the corresponding interlocking structure on the retention mounting base (2) cooperate with each other, and press to complete the locking connection between the two; S4, Interlayer Air Exchange: After the protective lens (4) is installed, a sandwich space is formed between the protective lens (4) and the lidar window (101); During vehicle operation, external air enters the interlayer space through the air exchange path formed by the narrow interlocked areas (202) on both sides, and drives the water vapor in the interlayer space to be discharged outward. S5. Removal and replacement of protective lens: When the protective lens (4) needs to be replaced, a separation force is applied to the protective lens (4) to disengage the detachable interlock unit (201), and the old protective lens (4) is removed while the retaining mounting base (2) remains fixed, and a new protective lens (4) is installed.

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