Automatic rain cover structure and automobile

Abstract

The utility model provides a kind of automatic rain-shielding structure and car belongs to the technical field of automobile accessories. Including fixed beam, protruding beam, rain curtain and drive assembly, fixed beam and protruding beam are arranged in parallel, both ends of rain curtain are connected with fixed beam and protruding beam respectively, and are folded and stored between fixed beam and protruding beam;Drive assembly includes motor and driving arm, motor is installed on fixed beam, one end of driving arm is connected with protruding beam, the other end is connected on fixed beam and is drivingly connected with motor, driving arm is configured to drive protruding beam to approach or away from fixed beam under the power supply of motor. It can solve the technical problem that when rainfall is large, rainwater at the front windshield of the car is difficult to be discharged in time and then blocks the line of sight, affecting the driving safety.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an automatic rain shelter structure and an automobile. Background Technology

[0002] As a primary mode of land transportation, automobiles have become an indispensable part of people's daily travel and commuting in modern society. To meet all-weather travel needs, automobiles need to be able to drive safely in various weather conditions, especially in rainy weather. Therefore, ensuring that drivers have a clear and unobstructed view of the road ahead in the rain is a key prerequisite for ensuring driving safety.

[0003] Currently, the waterproofing and visibility maintenance of automotive windshields primarily rely on a mature active drainage system. The core of this system is the wiper assembly installed beneath the windshield, which, in conjunction with a unique hydrophobic or hydrophilic coating on the glass surface and the vehicle's aerodynamic design, works in conjunction with the windshield's own aerodynamics. When driving in the rain, the driver activates the wipers, and the wiper blades, driven by a mechanism, oscillate back and forth, wiping away the rainwater adhering to the glass. Simultaneously, the airflow generated by the vehicle's forward movement also blows some rainwater away from the glass surface, thus collectively maintaining the clarity of the windshield area.

[0004] However, the existing windshield wiper-based drainage system proves inadequate in heavy or torrential rain. Extreme rainfall intensity far exceeds the wiper's wiping frequency limit and the airflow's dispersion capacity, causing a large amount of water to accumulate on the windshield instantly, forming a continuous and thick water film. This severely distorts and blurs the driver's vision, creating temporary blind spots. Even with the wipers operating at their highest frequency, problems such as inadequate drainage and water streaks remaining after wiping persist, significantly increasing driving safety hazards. A supplementary solution is urgently needed to improve this situation. Summary of the Invention

[0005] This utility model provides an automatic rain-shielding structure and a car, which solves the technical problem that when rainfall is heavy, rainwater is difficult to drain from the windshield in time, thus obstructing vision and affecting driving safety. The technical solution is as follows: In a first aspect, embodiments of this utility model provide an automatic rain shelter structure, including: a fixed beam, an extending beam, a rain shelter curtain, and a drive assembly. The fixed beam and the extended beam are arranged in parallel. The two ends of the rain curtain are connected to the fixed beam and the extended beam respectively, and are folded and stored between the fixed beam and the extended beam. The drive assembly includes a motor and a drive arm. The motor is mounted on the fixed beam. One end of the drive arm is connected to the extended beam, and the other end is connected to the fixed beam and driven by the motor. The drive arm is configured to drive the extended beam closer to or away from the fixed beam under the power provided by the motor.

[0006] Optionally, the drive arm includes a drive rod and a driven rod. One end of the drive rod is rotatably connected to the fixed beam and is driven by the output end of the motor through a gear set. One end of the driven rod is rotatably connected to the other end of the drive rod, and the other end is rotatably connected to the extended beam.

[0007] Optionally, it also includes an auxiliary support arm with the same structure as the drive arm. In the extension direction of the fixed beam and the extension beam, the auxiliary support arm is arranged at intervals from the drive arm. One end of the auxiliary support arm is rotatably connected to the extension beam, and the other end of the auxiliary support arm is rotatably connected to the fixed beam.

[0008] Optionally, the drive arm is a telescopic rod, and the motor is a servo motor that is connected to the drive arm for transmission.

[0009] Optionally, both the fixed beam and the extending beam are rectangular tubular.

[0010] Optionally, the diameter of the protruding beam is larger than the diameter of the fixed beam.

[0011] Optionally, the fixed beam, the extended beam, and the drive arm are all aluminum alloy structural components.

[0012] Secondly, this utility model embodiment also provides an automobile, including the automatic rain-shielding structure described in the first aspect, and also including a vehicle body. The automatic rain-shielding structure is installed on the roof above the windshield of the vehicle body. The fixed beam is connected to the roof, and the extended beam is located on the side of the fixed beam near the windshield.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: In normal weather or with light rainfall, the drive arm is in a retracted state, at which point the distance between the fixed beam and the extended beam is minimal, and they are nearly parallel and closed together. The rain curtain connecting the two is folded in a wave-like shape and stored in the gap between the fixed beam and the extended beam. In extreme rainfall conditions such as heavy rain or torrential rain, the vehicle control system activates the electric motor, driving the drive arm to extend and move the extended beam away from the fixed beam. The extended beam extends horizontally or at a certain angle towards the vehicle's hood, opening the rain curtain connected to the fixed beam to cover the space above the windshield. This rain curtain intercepts and diverts the main rain stream before it reaches the windshield, significantly reducing the probability of water film formation on the windshield and avoiding interference with the driver's visibility, thus ensuring driving safety. In the non-operating state, the electric motor drives the drive arm to shorten, causing the extended beam to retract and pull the rain curtain folded / rolled back in, without affecting the vehicle's overall shape or visibility. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the automatic rain shelter structure provided in this embodiment of the utility model; Figure 2 This is a side view of the automatic rain shelter structure provided in this embodiment of the utility model; Figure 3 This is a partial structural diagram of a car equipped with an automatic rain-shielding structure, provided in an embodiment of this utility model.

[0016] In the diagram: 1-Fixed beam; 2-Extending beam; 3-Rain curtain; 4-Drive assembly; 5-Vehicle body; 41-Motor; 42-Drive arm; 43-Auxiliary support arm; 421-Drive rod; 422-Driven rod. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the automatic rain shelter structure provided in this embodiment of the utility model; Figure 2 This is a side view of the automatic rain-shielding structure provided in an embodiment of this utility model. (See attached image.) Figures 1 to 2As shown, this utility model embodiment provides an automatic rain shelter structure, including a fixed beam 1, an extended beam 2, a rain shelter curtain 3, and a drive assembly 4.

[0019] The fixed beam 1 and the extended beam 2 are arranged in parallel. The two ends of the rain curtain 3 are connected to the fixed beam 1 and the extended beam 2 respectively, and are folded and stored between the fixed beam 1 and the extended beam 2.

[0020] The drive assembly 4 includes a motor 41 and a drive arm 42. The motor 41 is mounted on the fixed beam 1. One end of the drive arm 42 is connected to the extension beam 2, and the other end is connected to the fixed beam 1 and is driven by the motor 41. The drive arm 42 is configured to drive the extension beam 2 to move closer to or away from the fixed beam 1 under the power provided by the motor 41.

[0021] In this embodiment of the invention, the automatic rain-shielding structure is installed on the roof above the windshield of the vehicle. Specifically, it can be integrated into the front crossbeam of the roof above the windshield. The fixed beam 1, which houses the motor 41, is connected to the roof. The motor 41 is located inside the roof and connected to the vehicle's power supply system, providing power to the entire automatic rain-shielding device. In normal weather or when rainfall is light, the drive arm 42 is in a retracted state. At this time, the distance between the fixed beam 1 and the extended beam 2 is minimal, and they are close together. The rain curtain 3 connecting the two is folded in a wave shape and stored in the gap between the fixed beam 1 and the extended beam 2. In extreme rainfall conditions such as heavy rain or torrential rain, the vehicle control system controls the motor 41 to start, driving the drive arm 42 to extend the extended beam 2 away from the fixed beam 1. The extended beam 2 extends horizontally or at a certain angle towards the vehicle's hood to open the rain curtain 3 connected to the fixed beam 1, thereby covering the space above the windshield. The rain curtain 3 intercepts and diverts the main rain stream before it reaches the windshield, significantly reducing the probability of water film formation on the windshield, avoiding interference with the driver's visibility, and ensuring driving safety. In the non-operating state, the drive arm 42 is shortened by the motor 41, causing the extension beam 2 to retract and pull the rain curtain 3 to fold / roll it up for storage, without affecting the overall vehicle shape and field of vision.

[0022] Optionally, the drive arm 42 includes a drive rod 421 and a driven rod 422. One end of the drive rod 421 is rotatably connected to the fixed beam 1 and is driven by the output end of the motor 41 through a gear set. One end of the driven rod 422 is rotatably connected to the other end of the drive rod 421, and the other end is rotatably connected to the extension beam 2. In one possible implementation of this utility model, the drive arm 42 is specifically a two-bar linkage mechanism composed of the drive rod 421 and the driven rod 422. One end of the drive rod 421 is rotatably connected to the fixed beam 1 by a pivot, and the other end is connected to the driven rod 422 by a hinge. The other end of the driven rod 422 is rotatably connected to the extension beam 2. The drive rod 421 is driven by the output end of the motor 41 through a gear set (e.g., motor pinion—intermediate torque-increasing gear—drive rod end gear ring) to achieve torque matching and transmission ratio setting. During operation, the motor 41 outputs angular displacement, which, after being amplified or reduced by the gear set, drives the drive rod 421 to rotate around its pivot point with the fixed beam 1. The drive rod 421, through the hinge point, drives the driven rod 422 to perform a compound motion of oscillation / approximate linearity, thus forming a planar four-bar linkage with the fixed beam 1 and the extension beam 2 as two "frames," ultimately converting the rotational motion of the motor into an approximately parallel reciprocating motion of the extension beam 2 relative to the fixed beam 1. By adjusting the length, angle, and gear ratio of the drive rod 421 and the driven rod 422, the unfolding stroke, unfolding speed, and end tension of the rain curtain 3 can be set. The drive arm 42, using this linkage transmission form, has high structural rigidity, predictable stroke, and good synchronization, which can maintain the stability of the movement trajectory of the extension beam 2 and reduce shaking and jamming. The gear set ensures efficient and reliable power transmission and positioning accuracy, which is beneficial for the rain curtain 3 to maintain tension and reduce bulging in windy conditions.

[0023] Optionally, an auxiliary support arm 43 with the same structure as the drive arm 42 is also included. In the extension direction of the fixed beam 1 and the extended beam 2, the auxiliary support arm 43 is spaced apart from the drive arm 42. One end of the auxiliary support arm 43 is rotatably connected to the extended beam 2, and the other end is rotatably connected to the fixed beam 1. Exemplarily, in this embodiment of the invention, in the longitudinal direction (lateral direction) of the fixed beam 1 and the extended beam 2, in addition to the drive arm 42, a set of auxiliary support arms 43 with the same structure are spaced apart. One end of the auxiliary support arm 43 is rotatably connected to the extended beam 2, and the other end is rotatably connected to the fixed beam 1, forming a parallel support with two (or more) fulcrums. The drive arm 42 provides the main drive, and the auxiliary support arm 43 provides synchronous guidance and lateral constraint. During the extension / retraction process, the two form a parallel constraint on the extended beam 2. Under the drive of the motor, the multi-point mechanism swings in the same direction with approximately equal amplitude, allowing the extended beam 2 to maintain a position substantially parallel to the fixed beam 1 to complete the displacement. The multi-point support system significantly improves torsional stiffness and resistance to eccentric loads, and can evenly distribute wind pressure and curtain tension, reducing warping and skew caused by unilateral stress on the extended beam 2. This improves the uniformity and durability of the rain curtain 3 tension and enhances its stability under high-speed driving and gust conditions.

[0024] Optionally, the drive arm 42 is a telescopic rod, and the motor 41 is a servo motor that is driven and connected to the drive arm 42. In another possible implementation of this utility model, the drive arm 42 can be an integrated telescopic rod (such as a ball screw electric cylinder, planetary roller screw, or electromagnetic linear actuator), and the motor 41 is a servo motor that is driven and connected to the telescopic rod. The motor drives the screw / transmission rod through a coupling or reducer to realize the extension and retraction of the push rod; the front end of the push rod is hinged to the extension beam 2, and the rear end is connected to the fixed beam 1. The servo motor is controlled in a closed loop according to position / speed / torque, outputting a controlled angular displacement, which is converted into a high-thrust linear displacement through the screw-nut pair, directly driving the extension beam 2 to move closer / away, completing the unfolding / retraction of the rain curtain 3. Combined with an encoder and limit switches, zero-position calibration, soft and hard limits, and position holding can be realized. The telescopic rod design features a short direct-drive link, minimal backlash, and fast response. Combined with servo control, it achieves high positioning accuracy and excellent anti-disturbance capabilities. At the same time, the number of mechanical components is reduced, and sealing and protection are easier to achieve, improving the overall reliability and ease of maintenance.

[0025] Optionally, both the fixed beam 1 and the extending beam 2 are rectangular tubular. Exemplarily, in this embodiment of the invention, both the fixed beam 1 and the extending beam 2 are rectangular tubular profiles (which can be extruded aluminum profiles or welded box beams). The wide, flat surface of the rectangular tube can serve as an installation reference and a mounting surface for seals / covers. The rectangular closed section has a high section modulus and polar moment of inertia in both the principal bending and torsional directions, providing higher bending and torsional resistance within a limited structural space; simultaneously, its flat surface facilitates the installation of guide blocks, limiting blocks, sealing strips, and cover components. While ensuring lightweight construction, high stiffness and low deflection are achieved, reducing wrinkling and misalignment of the curtain surface caused by relative deformation of the beam ends during extension; the planar mounting interface improves the assembly and consistency of components, which is beneficial for NVH and wind noise optimization.

[0026] Optionally, the diameter of the extending beam 2 is larger than that of the fixed beam 1. Exemplarily, in this embodiment of the invention, the diameter of the extending beam 2 is designed to be larger than that of the fixed beam 1. The leading edge of the extending beam 2 can be integrally formed or fitted with a guide lip / pressure strip to clamp the free end of the rain curtain 3 and serve as a windward reinforcing rib; its interior can be equipped with reinforcing ribs, end caps, and drainage channels. On the windward side, the extending beam 2 bears higher wind pressure and curtain tension reaction force. Increasing its cross-sectional dimensions can significantly improve local stiffness and overall stability; the leading edge guide geometry allows the incoming flow to smoothly separate or drain at the beam-curtain junction, reducing vortex shedding and curtain bulging. This structural configuration can achieve improved wind load resistance, reduced curtain flutter, and enhanced boundary sealing / drainage capabilities; at the same time, it provides more ample mounting cavities for end locking components, limiting components, and lighting / sensors, improving functional expandability.

[0027] Optionally, the fixed beam 1, the extended beam 2, and the drive arm 42 are all aluminum alloy structural components. Exemplarily, in this embodiment of the invention, the fixed beam 1, the extended beam 2, and the drive arm 42 are all made of 6-series aluminum alloy, achieving a balance between lightweight and durability, reducing the impact of increased vehicle weight and energy consumption; the corrosion-resistant and low-wear design reduces maintenance frequency, resulting in a better total lifespan cost.

[0028] Figure 3 This is a partial structural diagram of a car equipped with an automatic rain-shielding structure, provided in an embodiment of this utility model. (See diagram below.) Figure 3 As shown, this utility model embodiment also provides an automobile, including as follows: Figures 1 to 2The automatic rain-shielding structure shown is characterized by further including a vehicle body 5. The automatic rain-shielding structure is installed on the roof of the vehicle body 5 above the windshield. A fixed beam 1 is connected to the roof, and an extended beam 2 is located on the side of the fixed beam 1 closest to the windshield. In this embodiment of the invention, based on the control of the vehicle control system, when heavy rain is detected or the driver triggers an unfolding command, the motor 41 drives the extended beam 2 to move away from the fixed beam 1, and the rain curtain 3 is simultaneously pulled out and tensioned in front of the windshield. When the rain stops or the speed is too high / the user triggers a retraction command, the system reverses the drive, the extended beam 2 moves back, and the rain curtain 3 folds back and retracts. The controller adjusts the motor current and speed in real time based on feedback to achieve smooth start-stop, self-locking at the designated position, and abnormal protection. It can achieve an organic integration of the vehicle structure, electronics, and styling: effectively intercepting incoming rainwater and reducing the impact of water film and splashes on the field of vision during use; completely retracting during non-use conditions to maintain the overall vehicle appearance and wind resistance; and ensuring a safe, reliable, and perceptible user experience through linkage with vehicle speed / rain volume / limiting and anti-pinch mechanisms.

[0029] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art described herein. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic rain-shielding structure, characterized in that, include: Fixed beam (1), extended beam (2), rain curtain (3) and drive assembly (4). The fixed beam (1) and the extended beam (2) are arranged in parallel. The two ends of the rain curtain (3) are connected to the fixed beam (1) and the extended beam (2) respectively, and are folded and stored between the fixed beam (1) and the extended beam (2). The drive assembly (4) includes a motor (41) and a drive arm (42). The motor (41) is mounted on the fixed beam (1). One end of the drive arm (42) is connected to the extension beam (2), and the other end is connected to the fixed beam (1) and is driven by the motor (41). The drive arm (42) is configured to drive the extension beam (2) to move closer to or away from the fixed beam (1) under the power provided by the motor (41).

2. The automatic rain-shielding structure according to claim 1, characterized in that, The drive arm (42) includes a drive rod (421) and a driven rod (422). One end of the drive rod (421) is rotatably connected to the fixed beam (1) and is connected to the output end of the motor (41) via a gear set. One end of the driven rod (422) is rotatably connected to the other end of the drive rod (421) and the other end is rotatably connected to the extension beam (2).

3. The automatic rain-shielding structure according to claim 2, characterized in that, It also includes an auxiliary support arm (43) with the same structure as the drive arm (42). In the extension direction of the fixed beam (1) and the extension beam (2), the auxiliary support arm (43) is arranged at intervals from the drive arm (42). One end of the auxiliary support arm (43) is rotatably connected to the extension beam (2), and the other end of the auxiliary support arm (43) is rotatably connected to the fixed beam (1).

4. The automatic rain-shielding structure according to claim 1, characterized in that, The drive arm (42) is a telescopic rod, and the motor (41) is a servo motor that is connected to the drive arm (42) for transmission.

5. The automatic rain-shielding structure according to any one of claims 1 to 4, characterized in that, Both the fixed beam (1) and the extended beam (2) are rectangular tubular.

6. The automatic rain-shielding structure according to claim 5, characterized in that, The diameter of the protruding beam (2) is larger than the diameter of the fixed beam (1).

7. The automatic rain-shielding structure according to any one of claims 1 to 4, characterized in that, The fixed beam (1), the extended beam (2), and the drive arm (42) are all aluminum alloy structural components.

8. A car comprising an automatic rain-shielding structure as described in any one of claims 1 to 7, characterized in that, It also includes a vehicle body (5), the automatic rain shelter structure is installed on the roof above the windshield of the vehicle body (5), the fixed beam (1) is connected to the roof, and the extended beam (2) is located on the side of the fixed beam (1) near the windshield.

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