A rear window washing nozzle arrangement

Abstract

This invention discloses a method for arranging rear window washer nozzles, belonging to the field of window washing technology. The method involves determining the nozzle's water-drop point line segment; determining the angle between the nozzle's center line and the rear window; determining the nozzle position based on the line segment and angle; marking a first, second, third, and fourth point on the wiper blade curve at the initial position of the rear window wiper, where the first point is the near end of the wiper blade, the second point is the near 1 / 3 position, the third point is the 1 / 2 position, and the fourth point is 20mm from the far end of the wiper blade; drawing a first curve, a second curve, and a third curve parallel to the X-Z plane and projected onto the rear window surface from the first, second, and third points, respectively; drawing a fourth curve parallel to the curve of the far end of the wiper blade on the rear window glass from the fourth point; moving the wiper from the initial position to 26 degrees, where the wiper blade intersects the fourth curve at a fifth point; drawing a fifth curve from the fifth point parallel to the X-Z plane and projected onto the rear window surface; and the fifth curve being the suggested water-drop point area for the fan-shaped nozzle.

Description

Technical Field

[0001] This invention belongs to the field of vehicle window washing technology, specifically a method for arranging rear window washer nozzles. Background Technology

[0002] The windshield wipers require a washing system to provide cleaning media for cleaning the windshield. The area where the washing liquid is sprayed directly affects the wiping effect of the wipers. If the design is not reasonable, it may reduce the wiping effect during use, affect the driver's vision, and potentially affect driving safety. Summary of the Invention

[0003] To address the above problems, this invention provides a method for arranging rear window washer nozzles. The method involves: determining the nozzle's water-drop point line segment; determining the angle between the nozzle's center line and the rear window; determining the nozzle position based on the line segment and angle; marking a first, second, third, and fourth point on the wiper blade curve at the initial position of the rear window wiper, where the first point is the near end of the wiper blade, the second point is the near 1 / 3 position, the third point is the 1 / 2 position, and the fourth point is 20mm from the far end of the wiper blade; drawing a first curve, a second curve, and a third curve parallel to the XZ plane and projected onto the rear window surface from the first, second, and third points, respectively; drawing a fourth curve parallel to the curve of the far end of the wiper blade on the rear window glass from the fourth point; moving the wiper from its initial position to 26 degrees, where the wiper blade intersects the fourth curve at a fifth point; drawing a fifth curve from the fifth point parallel to the XZ plane and projected onto the rear window surface; and the fifth curve representing the suggested water-drop point area for the fan-shaped nozzle.

[0004] The water droplets arranged in this invention can achieve uniform distribution of washing liquid in the wiping area, ensuring the wiping performance of the wipers and effectively avoiding problems such as incomplete wiping and abnormal noise caused by dry wiping.

[0005] The technical solution of this invention is as follows: a method for arranging rear window washer nozzles, comprising the following steps:

[0006] S1 determines the line segment at the nozzle's water droplet point;

[0007] S2 determines the angle between the center line of the nozzle's water drop point and the rear window;

[0008] S3 determines the nozzle position based on the angle between line segment S1 and S2.

[0009] Furthermore, step S1 specifically includes:

[0010] S101 marks the first, second, third, and fourth points on the wiper blade curve at the initial position of the rear window wiper. The first point is the position near the end of the wiper blade, the second point is the position 1 / 3 of the distance from the end of the wiper blade, the third point is the position 1 / 2 of the distance from the end of the wiper blade, and the fourth point is the position 20mm from the far end of the wiper blade.

[0011] S102 draws lines parallel to the XZ plane from the first point, the second point, and the third point, and projects them onto the rear window surface as the first curve, the second curve, and the third curve, respectively.

[0012] S103 draws a fourth curve from the fourth point, parallel to the curve of the far end of the wiper on the rear window glass;

[0013] S104 moves the wiper from its initial position to 26 degrees, and the wiper intersects with the fourth curve at the fifth point;

[0014] S105 is a line parallel to the XZ plane from the fifth point and is projected onto the rear window of the vehicle to form the fifth curve;

[0015] The fifth curve of S106 represents the suggested water droplet area for the fan-shaped nozzle.

[0016] Furthermore, the angle between the center line of the water spray landing point and the rear window is greater than 10°.

[0017] Furthermore, the nozzles can be exposed or concealed.

[0018] Furthermore, the nozzle is a columnar nozzle or a fan-shaped nozzle.

[0019] Furthermore, the nozzle should be less than 200mm from the Y0 surface of the vehicle.

[0020] The beneficial effects of this invention are as follows:

[0021] The water droplets arranged in this invention can achieve uniform distribution of washing liquid in the wiping area, ensuring the wiping performance of the wipers and effectively avoiding problems such as incomplete wiping and abnormal noise caused by dry wiping. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the method of the present invention.

[0023] In the picture:

[0024] A. First point; B. Second point; C. Third point; D. Fourth point; E. Fifth point; A' The curve formed by drawing a line parallel to the XZ plane from point A and projecting it onto the glass surface intersects with the rear window glass; B' The curve formed by drawing a line parallel to the XZ plane from point B and projecting it onto the glass surface intersects with the rear window glass; C' The curve formed by drawing a line parallel to the XZ plane from point C and projecting it onto the glass surface intersects with the rear window glass; D' The curve formed by drawing a line parallel to the far end of the wiper blade from point D and projecting it onto the glass surface intersects with the rear window glass; E' The curve formed by drawing a line parallel to the XZ plane from intersection point E and projecting it onto the glass surface intersects with AA'; a. Sprayer nozzle setting point; b. Midpoint of EE'; 1. Curve of the far end of the wiper blade on the rear window glass; 2. Curve of the near end of the wiper blade on the rear window glass. Detailed Implementation

[0025] It should be noted that in the description of this invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; a connection can be a mechanical connection or an electrical connection; a link can be a direct connection or an indirect connection through an intermediate medium, and can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] The vehicle length direction is the X-axis, the vehicle width direction is the Y-axis, the vertical direction to the ground is the Z-axis, the Y0 plane is the Y0 cross-section of the vehicle, which is a known plane in this field.

[0028] According to their arrangement, the rear nozzles are generally divided into exposed type (direct injection type) and concealed type (outflow type).

[0029] Direct injection (exposed):

[0030] Generally, it is placed at the corresponding position in the AA'-CC' interval, and it is recommended that the placement position be less than 200mm away from the Y0 plane;

[0031] The center line of the water spray point is recommended to be at position b (if it is a columnar nozzle, spray vertically; if it is a fan-shaped nozzle, the water spray area should not exceed the boundary of AA' and DD'). The angle between the center line of the water spray point and the windshield glass should be greater than 10°.

[0032] Streaming (Hidden):

[0033] Generally, it is installed in the position corresponding to the AA'-CC' interval, and it is recommended that the installation position be less than 200mm away from the Y0 surface. The optimal water spray point is recommended to be at position a, and the center line of the water spray point should form an angle greater than 10° with the windshield.

[0034] Note: Point b is the midpoint of the curve obtained by drawing a parallel line in the Y direction from the intersection of the wiper (E) and the boundary line D when the wiper is running at 26° and projecting it onto the glass surface, intersecting the boundary line AA'; Point a is the point on the line where the parallel plane of the Y0 plane drawn from point b intersects with the windshield glass.

[0035] The drawing process is as follows:

[0036] Obtain the wiping curve of the rear window wiper on the windshield, including the far end movement curve of the wiper blade, the near end movement curve of the wiper blade, and the wiper blade curve at the initial position.

[0037] Mark the first point A, the second point B, the third point C, and the fourth point D on the wiper blade curve at the initial position of the rear window wiper. The first point A is the near end of the wiper blade, the second point B is the 1 / 3 position of the near end of the wiper blade, the third point C is the 1 / 2 position of the wiper blade, and the fourth point D is the position 20mm away from the far end of the wiper blade.

[0038] Draw lines parallel to the XZ plane from point A, point B, and point C respectively, and project them onto the glass surface to form the first curve A'A, the second curve B'B, and the third curve C'C. Draw a curve parallel to curve 1 on the rear window glass from point D, and project it onto the glass surface to form the fourth curve D'D.

[0039] Move the wiper 26 degrees from its initial position until the wiper blade intersects the fourth curve D'D at the fifth point E.

[0040] The fifth curve E'E is formed by projecting a line parallel to the XZ plane onto the glass surface from the fifth point E. The fifth curve E'E is the suggested water droplet area for the fan-shaped nozzle.

[0041] The position of the washing nozzle can be derived by drawing an isosceles triangle with the fifth curve E'E as the base.

[0042] Draw the midpoint b of the fifth curve E'E. From the midpoint b of EE', draw a line parallel to the XZ plane and project it onto the glass surface to form a curve. The other endpoint of the curve is the nozzle setting point a.

[0043] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, and within the spirit and principles of the present invention, should be included within the scope of protection of the present invention. Furthermore, all content not described in detail in this specification is prior art known to those skilled in the art.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A method for arranging rear window washer nozzles, characterized in that, Includes the following steps: S1 determines the line segment at the nozzle's water drop point; S2 determines the angle between the center line of the nozzle's water drop point and the rear window; S3 determines the nozzle position based on the angle between line segment S1 and S2; Step S1 is as follows: S101 marks the first, second, third, and fourth points on the wiper blade curve at the initial position of the rear window wiper. The first point is the position near the end of the wiper blade, the second point is the position 1 / 3 of the distance from the end of the wiper blade, the third point is the position 1 / 2 of the distance from the end of the wiper blade, and the fourth point is the position 20mm from the far end of the wiper blade. S102 draws lines parallel to the XZ plane from the first point, the second point, and the third point, and projects them onto the rear window surface as the first curve, the second curve, and the third curve, respectively. S103 draws a fourth curve from the fourth point, parallel to the curve of the far end of the wiper on the rear window glass; S104 moves the wiper from its initial position to 26 degrees, and the wiper intersects with the fourth curve at the fifth point; S105 forms the fifth curve by projecting a line parallel to the XZ plane from the fifth point onto the rear window of the vehicle. The fifth curve of S106 represents the suggested water droplet area for the fan-shaped nozzle; In step S2, the angle between the center line of the water spray landing point and the rear window is >10°.

2. The rear window washer nozzle arrangement method as described in claim 1, characterized in that, The nozzles can be exposed or concealed.

3. The rear window washer nozzle arrangement method as described in claim 2, characterized in that, The nozzle is either a columnar nozzle or a fan-shaped nozzle.

4. The rear window washer nozzle arrangement method as described in claim 3, characterized in that, The nozzle is less than 200mm from the Y0 surface of the car.

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