A pressurized wiper

Abstract

The utility model discloses a kind of pressurized windscreen wipers, relate to windscreen wiper technical field.The pressurized windscreen wiper includes elastic sheet, the adhesive tape of installation in the lower surface of elastic sheet and the connector of setting in the upper surface of elastic sheet, still include flow guide wing and pressurized middle cover, flow guide wing is set in the upper surface of elastic sheet, and it extends along the length direction of elastic sheet, the surface of flow guide wing forms first flow guide face, pressurized middle cover is set in the upper surface of elastic sheet component, and is connected with connector, including cover body and the flow guide fin of the side of cover body that stretches out from windward, flow guide fin forms second flow guide face.The structure gap between both sides flow guide wing is filled by pressurized middle cover, vertical downward pressure is generated using airflow when vehicle high-speed driving, effectively offset drag lift, solve the problem that traditional windscreen wiper middle part is easily floating up due to lack of flow guide structure, and not clean problem of scraping and brushing, so that windscreen wiper is closely adhered to glass, improve the quality of wiping and driving safety.

Description

Technical Field

[0001] This utility model relates to the field of windshield wiper technology, and in particular to a pressure windshield wiper. Background Technology

[0002] With the rapid development of automotive technology, car speeds are increasing, and the performance requirements for automotive safety components are becoming increasingly stringent. Windshield wipers, as an essential basic safety feature, are crucial equipment for ensuring drivers have clear visibility ahead and behind in rainy or snowy weather, thus guaranteeing driving safety.

[0003] In traditional technology, to address the issue of windshield wipers becoming unstable due to lift generated by wind resistance at high speeds, existing frameless wipers typically incorporate windward guide surfaces (or deflectors) at both ends of the wiper arm mounting position. When the vehicle is moving, the oncoming airflow passes over these guide surfaces, generating downward pressure due to wind resistance. This downward pressure counteracts the lift generated by wind resistance, allowing the wiper to remain firmly in contact with the glass and ensuring a clean wipe.

[0004] However, this traditional windshield wiper system still has significant problems. While many frameless wipers have airflow guides at both ends, they often lack a guide surface at the junction with the wiper arm (the joint). This causes the middle section of the wiper to experience lift due to wind resistance at high speeds, resulting in the wiper not adhering tightly to the glass and failing to clean the windshield properly, thus compromising driving safety. Utility Model Content

[0005] Therefore, it is necessary to provide a pressure-boosting windshield wiper to address the above problems.

[0006] This application provides a pressure wiper, including a spring, a rubber strip mounted on the lower surface of the spring, and a connector disposed on the upper surface of the spring, and further including: A deflector is disposed on the upper surface of the spring and extends along the length of the spring. The surface of the deflector forms a first deflecting surface, which is used to generate downforce when the vehicle is moving so that the wiper is pressed against the glass. A pressurized center cover, which is disposed on the upper surface of the spring assembly and connected to the connector, includes a cover body and a guide vane extending from the windward side of the cover body. The guide vane forms a second guide surface for generating downforce when the vehicle is in motion, so that the connection between the wiper and the wiper arm is pressed tightly against the glass.

[0007] Optionally, the guide vane and the projected portion of the spring in the vertical direction coincide, and one end of the guide vane is connected to the pressurized inner cover.

[0008] Optionally, the pressurized shroud further includes a rectifier transition cover, which is connected to the shroud body and covers the seam where the shroud body connects to the guide vane; The rectifier transition cover forms a third guide surface, and the third guide surface and the second guide surface form a continuous guide surface with a smooth transition.

[0009] Optionally, the guide vanes are arranged in pairs, with each pair of guide vanes located at both ends of the pressurized shroud along its length and covering the spring sheets on both sides of the pressurized shroud.

[0010] Optionally, the adhesive strip is connected to the lower surface of the spring sheet via small wings.

[0011] Optionally, the air guide wing further includes a first baffle disposed below it, the first baffle extending toward the rubber strip and covering the small wing located below the air guide wing in the windward direction, so as to guide the airflow passing under the air guide wing to the first air guide surface.

[0012] Optionally, the pressurized shroud further includes a second baffle plate disposed below the shroud body. The second baffle plate extends toward the direction of the rubber strip and covers the small fins located below the pressurized shroud in the windward direction to guide the airflow passing below the pressurized shroud to the second guide surface.

[0013] Optionally, the projections of the spring sheet along both the vertical and windward directions fall within the projection formed by the pair of guide vanes and the pressurized shroud.

[0014] Optionally, a groove is provided below the air guide wing, and the air guide wing is connected to the spring piece through the groove. A positioning protrusion is provided in the groove, and a slot corresponding to the positioning protrusion is provided on the spring piece.

[0015] Optionally, the cover body is provided with claws, which are disposed on opposite sides of the cover body. The spacing of the claws is adapted to the width of the spring sheet, and the pressurized cover is connected to the spring sheet through the claws.

[0016] Optionally, the guide vane extends in a direction away from the cover, the height of the extended end of the guide vane is lower than the height of the connection between the guide vane and the cover, and the upper surface of the guide vane forms an outwardly convex arc-shaped windward surface.

[0017] Compared with the prior art, the technical solution provided in this application has the following advantages: The aforementioned windshield wiper mainly consists of a spring, a rubber strip mounted on the lower surface of the spring, a connector on the upper surface of the spring, a guide vane, and a pressure-pressurizing cover. The guide vane is mounted on the upper surface of the spring and extends along its length. Its surface forms a first guide surface with an aerodynamic arc or slope design. When the vehicle is traveling at high speed, the oncoming airflow acts on the first guide surface, generating a vertically downward pressure that presses both ends of the wiper firmly against the glass. More importantly, this embodiment features a pressure-pressurizing cover at the connector. This cover not only includes the cover body but also features a specially designed guide vane extending from the windward side of the cover body, thus forming a second guide surface. The core technical effect of this design is that it solves the problem of traditional windshield wipers often lacking an effective airflow guiding structure at the middle connection point, leading to upward floating. The additional downward pressure generated at the center of the wiper by the second airflow guide surface effectively counteracts the large wind resistance lift at the joint, ensuring that the central area where the wiper and the wiper arm connect can also fit tightly against the glass. This achieves stable wiping of the entire wiper at high speeds and avoids missed wiping caused by local floating. Attached Figure Description

[0018] Figure 1 This is a three-dimensional exploded view of a pressure wiper provided in an embodiment of this application; Figure 2 This is a schematic diagram of the overall assembly structure of a pressurized windshield wiper provided in an embodiment of this application; Figure 3 A three-dimensional structural schematic diagram of a pressure shroud provided in an embodiment of this application; Figure 4 A three-dimensional structural schematic diagram of a pressurized shroud provided in one embodiment of this application from another perspective; Figure 5 This is a three-dimensional structural schematic diagram of a guide vane provided in an embodiment of this application.

[0019] Explanation of reference numerals in the attached figures: 1. Spring clip; 2. Rubber strip; 3. Connector; 4. Guide vane; 41. First baffle; 42. Slide groove; 5. Pressurized inner cover; 51. Cover body; 52. Guide vane; 53. Rectifier transition cover; 54. Second baffle; 55. Claw; 6. Small fin. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] See Figures 1 to 4 An embodiment of this utility model provides a pressure wiper, including a spring 1, a rubber strip 2 installed on the lower surface of the spring 1, and a connector 3 disposed on the upper surface of the spring 1. It also includes: a guide vane 4, which is disposed on the upper surface of the spring 1 and extends along the length of the spring 1. The surface of the guide vane 4 forms a first guide surface, used to generate downward pressure when the vehicle is in motion, so that the wiper is pressed tightly against the glass; and a pressure center cover 5, which is disposed on the upper surface of the spring 1 assembly and connected to the connector 3. The pressure center cover 5 includes a cover body 51 and a guide vane 52 extending from the windward side of the cover body 51. The guide vane 52 forms a second guide surface, used to generate downward pressure when the vehicle is in motion, so that the connection between the wiper and the wiper arm is pressed tightly against the glass.

[0022] This embodiment provides a pressurized windshield wiper. The wiper mainly consists of a spring blade 1, a rubber strip 2 mounted on the lower surface of the spring blade 1, a connector 3 located on the upper surface of the spring blade 1, a guide vane 4, and a pressurized inner cover 5. See also... Figure 5 The guide vane 4 is mounted on the upper surface of the spring 1 and extends along its length. The first guide surface formed on its surface adopts an aerodynamic arc or slope design. When the vehicle is traveling at high speed, the oncoming airflow acts on the first guide surface, generating a vertically downward pressure, thereby pressing the ends of the wipers firmly against the glass. More importantly, see [reference needed] Figure 3 , Figure 4 In this embodiment, a pressure-pressurizing cover 5 is provided at the joint 3. This cover not only includes a cover body 51, but also features a specially designed guide vane 52 extending from the windward side of the cover body 51, thus forming a second guide surface. The core technical effect of this design is to solve the problem of traditional windshield wipers often lacking an effective guide structure at the middle connection point, leading to upward floating. By generating additional downward pressure at the center of the wiper through the second guide surface, the large wind resistance lift at the joint 3 is effectively offset, ensuring that the central area where the wiper and wiper arm connect can also be tightly pressed against the glass. This achieves stable wiping of the entire wiper at high speeds and avoids missed wiping caused by local upward floating.

[0023] In traditional frameless wiper designs, to accommodate the wiper arm connection, the wiper arm typically has a large opening in the center or is only covered by a simple decorative cover. This results in a "discontinuity" in the center of the wiper's windward surface. This discontinuity causes a low-pressure zone to form in the center of the airflow at high speeds, or an inability to generate sufficient downforce, leading to the wiper surfacing and missing sections in the center (often the driver's central line of sight). In this embodiment, the pressurized center cover 5 is not merely a cover; its core lies in the guide vane 52 extending to one side from the cover body 51. The cross-section of this structure is designed as an asymmetrical airfoil-like or wedge-shaped section, with its windward surface (second guide vane) having a specific angle of attack. When the vehicle travels at high speed and the airflow accelerates, the airflow impacts this inclined guide vane. According to the momentum theorem, the change in the direction of the airflow velocity exerts a vertically downward force vector on the guide vane. Because the pressurized cover 5 is directly and rigidly connected to the force center of the connector 3 and the spring 1, this additional aerodynamic downforce can directly compensate for the pressure drop that may occur in the wiper arm spring under high-speed wind resistance. Looking more closely, the extended guide vane 52 fills the structural gap between the original connector 3 and the side guide vane 4, ensuring that the central area where the wiper and the wiper arm are connected can also fit tightly against the glass.

[0024] In one embodiment, see Figure 1 , Figure 2 The vertical projection of the guide vane 4 and the spring 1 coincides, and one end of the guide vane 4 is connected to the pressure-enhancing cover 5. This embodiment further defines the positional relationship between the guide vane 4 and the spring 1 based on the previous embodiments. In this embodiment, the vertical projection of the guide vane 4 and the spring 1 coincides, meaning that the guide vane 4 directly covers the top of the spring 1, and one end of the guide vane 4 is connected to the pressure-enhancing cover 5. The technical effect of this structural layout is that it can directly and efficiently transmit the aerodynamic downforce generated by the guide vane 4 to the spring 1, which serves as the skeleton, reducing force transmission loss. Simultaneously, the connection design between the guide vane 4 and the pressure-enhancing cover 5 makes the upper cover of the entire wiper form a relatively continuous whole, avoiding large gaps in the middle. This not only enhances the overall structural rigidity of the wiper and prevents high-speed airflow from generating whistling or turbulence at the gaps, but also effectively protects the internal spring 1 structure from direct erosion by wind, sand, and rainwater.

[0025] In one embodiment, see Figure 2The pressurized center cover 5 also includes a flow-rectifying transition cover 53, which is connected to the cover body 51 and covers the seam where the cover body 51 connects to the guide vane 4. The flow-rectifying transition cover 53 forms a third flow-guiding surface, which forms a smooth transition continuous flow-guiding surface with the second flow-guiding surface. This embodiment optimizes the connection between the pressurized center cover 5 and the guide vane 4. Specifically, the pressurized center cover 5 is also equipped with a flow-rectifying transition cover 53, which is connected to the cover body 51 and is specifically used to cover the seam where the cover body 51 connects to the guide vane 4. The outer surface of the flow-rectifying transition cover 53 forms a third flow-guiding surface, which forms a smooth transition continuous flow-guiding surface with the second flow-guiding surface on the pressurized center cover 5. This technical feature significantly improves the airflow characteristics of the wiper surface. Without this transition cover, the gap between the cover body 51 and the guide vane 4 due to assembly requirements would cause airflow separation, generating vortices and noise. The addition of the rectifier transition cover 53 allows the airflow to flow smoothly from the pressurized inner cover 5 to the guide vanes 4 on both sides, maintaining the continuity of the guide surface, further reducing the drag coefficient and wind noise, while also enhancing the product's overall appearance and sophistication.

[0026] In actual engineering manufacturing, the pressurized shroud 5 and the elongated side guide vanes 4 are usually manufactured and assembled separately. This inevitably creates physical seams or height differences (i.e., "step effect") at the joint. If such discontinuous steps are allowed to exist, boundary layer separation will occur when high-speed airflow passes through this area, generating tiny vortices. These vortices not only generate high-frequency wind noise (whistling sound) but also interfere with the airflow adhesion to the surface of the subsequent guide vanes 4, reducing the pressurization efficiency of the guide vanes 4. The flow-rectifying transition cover 53 introduced in this embodiment is precisely to solve this microscopic aerodynamic problem. It acts as an "airflow bridge," and its outer surface (third guide surface) can simultaneously maintain tangency or smooth transition with the end tangent of the pressurized shroud 5 and the beginning tangent of the guide vanes 4. This design ensures that the airflow remains in a laminar state when flowing through the component connection, without lateral movement or separation. This not only improves the quietness of the wipers, but more importantly, it ensures the pressure continuity of the entire airflow channel from the center to both sides, making the downward pressure distribution of the wipers along the length a smooth curve, rather than local pressure abrupt changes, thus avoiding local vibrations or water streaks during the wiping process.

[0027] In one embodiment, see Figure 1 , Figure 2The guide vanes 4 are arranged in pairs, with one pair of guide vanes 4 respectively located at the two ends of the pressurized central cover 5 along its length, covering the spring pieces 1 on both sides of the pressurized central cover 5. This embodiment specifically describes the distribution of the guide vanes 4. In this embodiment, the guide vanes 4 are arranged in pairs, located at the two ends of the pressurized central cover 5 along its length, and completely covering the spring pieces 1 extending from both sides of the pressurized central cover 5. The technical effect of this symmetrical arrangement is to ensure the balance of force on the wiper. During vehicle operation, the guide vanes 4 on both sides can simultaneously generate uniform downward pressure, which, combined with the downward pressure generated by the central pressurized central cover 5, makes the force distribution of the entire wiper more uniform along its length. This effectively prevents the wiper from twisting or jumping due to uneven force, ensuring smooth and quiet wiping, while also protecting and decorating the entire length of the spring pieces 1.

[0028] In one embodiment, see Figure 1 The adhesive strip 2 is connected to the lower surface of the spring piece 1 via small wings 6. This embodiment relates to the installation structure of the adhesive strip 2. In this embodiment, the adhesive strip 2 is not directly glued to the spring piece 1, but is suspended and connected to the lower surface of the spring piece 1 via several small wings 6 (i.e., support connectors). The small wings 6 typically use a claw 55 structure to hold the adhesive strip 2. The technical advantage of this design is that it gives the adhesive strip 2 sufficient freedom and responsiveness. Since automotive windshields usually have complex curvatures, the rigid spring piece 1 needs to transmit pressure through the small wings 6, which have a certain amount of room to move, so that the adhesive strip 2 can flexibly adapt to changes in the curvature of the glass surface. As an intermediate force transmission component, the small wings 6 ensure that the adhesive strip 2 is firmly fixed, while also allowing for minor angle adjustments during wiping, thereby ensuring the optimal wiping angle and cleaning effect.

[0029] In one embodiment, see Figure 5 The windshield wiper 4 also includes a first baffle 41 disposed below it. The first baffle 41 extends towards the rubber strip 2 and covers the small fins 6 located below the windshield wiper 4 in the windward direction to guide the airflow passing under the windshield wiper 4 to the first guide surface. This embodiment improves the bottom structure of the windshield wiper 4. The windshield wiper 4 not only has an upper guide surface but also includes a first baffle 41 disposed below it. The first baffle 41 extends downward towards the rubber strip 2 and covers the small fins 6 located below the windshield wiper 4 in the windward direction. The main effect of this technical feature is to optimize the aerodynamic performance of the bottom of the wiper. Due to its complex and irregular structure, the small fins 6 are easily exposed and generate turbulent bottom airflow and wind noise. The first baffle 41 is equivalent to a straightening skirt, which shields the small fins 6 on the windward side, preventing high-speed airflow from directly impacting these irregular parts, and effectively guides the airflow upward to the first guide surface, thereby reducing the turbulent resistance at the bottom and further enhancing the pressurization efficiency of the upper guide surface.

[0030] In one embodiment, see Figure 3 , Figure 4 The pressurized center cover 5 also includes a second baffle 54 disposed below the cover body 51. The second baffle 54 extends towards the rubber strip 2 and covers the small fins 6 located below the pressurized center cover 5 in the windward direction to guide the airflow passing under the pressurized center cover 5 to the second guide surface. This embodiment also incorporates the same aerodynamic optimization for the bottom of the pressurized center cover 5. The pressurized center cover 5 has a second baffle 54 disposed below the cover body 51. This baffle also extends towards the rubber strip 2 and covers the small fins 6 located in the area below the pressurized center cover 5. Since the middle connection of the wiper is usually the most complex structure, including components such as the connector 3 and clips, airflow is most prone to turbulence here. The second baffle 54 effectively closes the windward opening below the pressurized center cover 5, sorting out and guiding the airflow that might otherwise enter the bottom of the center cover to the second guide surface on the surface of the pressurized center cover 5. This not only reduces wind noise in the center but also further strengthens the adhesion of the center by reducing bottom lift, ensuring that the most critical vision area of ​​the wiper is wiped clean.

[0031] While the upper surface airflow design of the wiper is crucial, the airflow management at the bottom equally determines the final adhesion. In existing technology, the "small wing 6" (support connector) connecting the rubber strip 2 and the spring 1 is usually an irregularly shaped skeleton structure. When high-speed airflow enters under the wiper, these irregular small wing 6 act like spoilers, stirring up the airflow and generating significant turbulent noise. The high-pressure turbulence accumulated below also exerts an upward lifting force (lift) on the wiper, counteracting the downward pressure generated by the upper airflow guide 4. In this embodiment, see [reference needed]. Figure 3 , Figure 4 , Figure 5 The first baffle 41 and the second baffle 54 essentially form a lateral "aerodynamic skirt" or "fairing." Extending downwards along the windward direction, it physically creates a barrier, intercepting and redirecting airflow that would otherwise collide with the small fins 6 and penetrate the bottom of the wiper. Through this barrier, the oncoming airflow is forced upwards and converges into the first guide surface above the guide fin 4 to participate in downforce generation. This "combination of blocking and diversion" strategy—blocking the lift source at the bottom and diverting the airflow upwards to generate pressure—maximizes the net downforce of the wiper, ensuring that the wipers remain in close contact with the glass even at high speeds.

[0032] In one embodiment, see Figure 1 , Figure 2The projections of the spring 1 along both the vertical and windward directions fall within the projection area formed by the pair of guide vanes 4 and the pressure shield 5. This embodiment describes the overall projection relationship of the wiper. In this embodiment, the projections of the spring 1 along both the vertical and windward directions are completely within the projection range formed by the pair of guide vanes 4 and the pressure shield 5. This means that from the frontal windward angle, the spring 1 is completely shielded by the guide vanes 4, the pressure shield 5, and their baffle structure. The technical effect of this fully enclosed design is to eliminate the wind-lifting hazard caused by non-guided structures. Without shielding, the exposed spring 1 may generate unstable vibrations or lift under high-speed airflow. By completely encasing the spring 1 in the "shadow" of the guide vanes 4 and the pressure shield 5, it is ensured that all effective oncoming airflow acting on the wiper can only act on the carefully designed guide surface that can generate downforce. This design maximizes wind resistance utilization, converting all aerodynamic force into downforce that compels the wipers to press against the glass, thus significantly improving wiping clarity at high speeds. Furthermore, this fully enclosed structure effectively prevents ice or snow from getting stuck between the wiper blades and the airflow guide structure in winter, enhancing the wiper's reliability in inclement weather.

[0033] In one embodiment, see Figure 5 The guide vane 4 has a groove 42 below it, which connects it to the spring piece 1. A positioning protrusion is located within the groove 42, and a corresponding slot is provided on the spring piece 1. This embodiment details the specific connection method between the guide vane 4 and the spring piece 1. The guide vane 4 has a groove 42 below it, through which it fits onto the spring piece 1. The groove 42 has a positioning protrusion that engages with the pre-set slot on the spring piece 1. The technical advantage of this connection structure is that it ensures a secure fixation and ease of assembly. The groove 42 design restricts the displacement of the guide vane 4 in the vertical and horizontal directions, ensuring it remains tightly against the spring piece 1. The engagement of the positioning protrusion and the slot constitutes a longitudinal limiting lock, preventing the guide vane 4 from shifting or falling off along the length of the spring piece 1 when the wiper is swinging at high speed or subjected to vibration, thus ensuring the safety and stability of the structure.

[0034] In one embodiment, see Figure 3 , Figure 4The cover 51 has claws 55 inside, which are located on opposite sides of the cover 51. The spacing of the claws 55 is adapted to the width of the spring piece 1. The pressure cover 5 is connected to the spring piece 1 through the claws 55. This embodiment details the connection method between the pressure cover 5 and the spring piece 1. Claws 55 are provided on opposite sides of the inner side of the cover 51. The spacing of these claws 55 is precisely designed to match the width of the spring piece 1. During assembly, the pressure cover 5 is fastened to the spring piece 1 by these claws 55. The technical advantage of this feature is that it enables quick and non-destructive installation of the pressure cover 5. Utilizing the elasticity of the plastic material, the claws 55 can tightly hold the spring piece 1, achieving reliable fixation without the need for screws or glue. At the same time, this connection method avoids complex drilling in the middle of the spring piece 1, maintains the integrity of the spring piece 1's strength, and facilitates subsequent disassembly and maintenance, reducing production and maintenance costs.

[0035] In one embodiment, the guide vane extends in a direction away from the shroud, the height of the extended end of the guide vane is lower than the height of the connection between the guide vane and the shroud, and the upper surface of the guide vane forms an outwardly convex arc-shaped windward surface.

[0036] This embodiment provides specific limitations on the structure of the guide vane 52 in the pressurized shroud 5. (See reference...) Figure 3 , Figure 4 As shown in the side view, the air deflector 52 is constructed as a cantilever structure extending away from the housing 51. In its vertical layout, the air deflector 52 exhibits a "high root, low tip" posture, meaning the height of the extended tip of the air deflector 52 is significantly lower than the height at the connection point between the air deflector 52 and the housing 51. This gradual decrease in height creates a natural downward slope for the air deflector 52, guiding the airflow smoothly towards the downward-facing side air deflector 4 and preventing a sharp, step-like separation of airflow at the connection point. Simultaneously, the upper surface of the air deflector 52 is not flat but forms a convex, arc-shaped windward surface. When the vehicle travels at high speed, the oncoming airflow passes over this convex arc-shaped surface. Based on the wall-attachment effect, the airflow adheres to this curved surface and its flow direction is deflected. Due to the presence of the curved surface, the airflow velocity accelerates above the air deflector 52. According to Bernoulli's principle, this creates a relatively low-pressure area above the air deflector 52, thereby generating a vertically downward pressure difference (i.e., downforce) on the surface of the air deflector 52. This outward-convex arc design, combined with the downward tilt, maximizes the utilization efficiency of wind energy and ensures that the middle of the wiper can obtain a continuous and stable downward pressure force under high-speed conditions.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pressure wiper, comprising a spring (1), a rubber strip (2) mounted on the lower surface of the spring (1), and a connector (3) disposed on the upper surface of the spring (1), characterized in that, Also includes: A guide wing (4) is disposed on the upper surface of the spring sheet (1) and extends along the length direction of the spring sheet (1). The surface of the guide wing (4) forms a first guide surface, which is used to generate downward pressure when the vehicle is in motion so that the wiper is in close contact with the glass. A pressure-increasing cover (5) is disposed on the upper surface of the spring (1) assembly and connected to the connector (3). It includes a cover body (51) and a guide vane (52) extending from the windward side of the cover body (51). The guide vane (52) forms a second guide surface for generating downforce when the vehicle is in motion so that the connection between the wiper and the wiper arm is pressed against the glass.

2. The pressure-adjustable windshield wiper according to claim 1, characterized in that, The guide wing (4) and the projected portion of the spring sheet (1) in the vertical direction coincide, and one end of the guide wing (4) is connected to the pressurized cover (5).

3. The pressure-adjustable windshield wiper according to claim 2, characterized in that, The pressurized shroud (5) also includes a rectifier transition cover (53), which is connected to the shroud body (51) and covers the seam where the shroud body (51) and the guide vane (4) are connected. The rectifier transition cover (53) forms a third guide surface, which forms a smooth transition continuous guide surface with the second guide surface.

4. The pressure-adjustable windshield wiper according to claim 3, characterized in that, The guide vanes (4) are arranged in pairs, with each pair of guide vanes (4) located at the two ends of the pressurized cover (5) along its length and covering the spring pieces (1) on both sides of the pressurized cover (5).

5. The pressure-adjustable windshield wiper according to claim 1, characterized in that, The adhesive strip (2) is connected to the lower surface of the spring piece (1) via the small wing (6).

6. The pressurized windshield wiper according to claim 5, characterized in that, The guide vane (4) also includes a first baffle (41) disposed below it. The first baffle (41) extends toward the rubber strip (2) and covers the small wing (6) located below the guide vane (4) in the windward direction, so as to guide the airflow passing under the guide vane (4) to the first guide surface.

7. The pressure-adjustable windshield wiper according to claim 6, characterized in that, The pressurized shroud (5) also includes a second baffle (54) disposed below the shroud (51). The second baffle (54) extends toward the rubber strip (2) and covers the small wing (6) located below the pressurized shroud (5) in the windward direction to guide the airflow passing under the pressurized shroud (5) to the second guide surface.

8. The pressure-adjustable windshield wiper according to claim 7, characterized in that, The projections of the spring (1) along the vertical direction and the windward direction both fall within the projection formed by the pair of guide vanes (4) and the pressurized cover (5).

9. The pressure-adjustable windshield wiper according to claim 1, characterized in that, The guide vane (4) has a groove (42) below it and is connected to the spring piece (1) through the groove (42). The groove (42) has a positioning protrusion and the spring piece (1) has a slot corresponding to the positioning protrusion.

10. The pressurized windshield wiper according to claim 1, characterized in that, The cover (51) is provided with claws (55), which are located on opposite sides inside the cover (51). The spacing of the claws (55) is adapted to the width of the spring sheet (1). The pressurized cover (5) is connected to the spring sheet (1) through the claws (55).

11. The pressure-adjustable windshield wiper according to claim 1, characterized in that, The guide vane (52) extends in a direction away from the cover (51), and the height of the extended end of the guide vane (52) is lower than the height of the connection between the guide vane (52) and the cover (51). The upper surface of the guide vane (52) forms an outwardly convex arc-shaped windward surface.

Images