Automobile windscreen washer

Abstract

The utility model discloses a kind of automobile wind window washer, including fixed seat, hydraulic drive assembly and cleaning brush group. The cleaning brush group includes swing brush, spray strip and rotating seat, swing brush inside is equipped with hose and is communicated with spray strip, spray strip is fixed on swing brush surface and is equipped with several spray holes along length direction. The hydraulic drive assembly includes drive cylinder, reversing valve, piston, first piston rod and second piston rod, piston both ends are connected piston rod respectively, piston rod surface is equipped with flow channel hole, for conveying cleaning fluid. Rotating seat surface is fixedly connected with crank rod, and is communicated with piston rod inner flow channel by flexible connecting pipe, realizes liquid supply and motion transmission. When working, reversing valve alternately switches liquid flow direction drive piston reciprocating motion, makes spray strip spray cleaning fluid and cooperates with elastic brush piece to wipe wind window, realizes the synchronous cleaning of spray and wiping. The utility model structure is compact, integration degree is high, can significantly improve the cleaning efficiency and reliability of automobile wind window.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an automotive windshield washer. Background Technology

[0002] Car windshield washer systems are an indispensable part of safe driving. Their main function is to maintain the driver's clear vision by spraying cleaning fluid and mechanically wiping away rainwater, mud, or dust that accumulates on the windshield surface.

[0003] Most common car windshield washer systems consist of two relatively independent parts: a spray system, which typically uses a separate pump to deliver cleaning fluid to nozzles and then spray it onto the windshield surface; and a scraper system, which relies on a motor-driven linkage to move the scraper arms back and forth to wipe the windshield surface. While this type of split structure can accomplish basic cleaning tasks, it still has the following shortcomings in practical applications: Spraying and wiping are separated and their actions are not synchronized: In existing structures, spraying and wiping are usually two independent systems. It is difficult to fully match the coverage of the spray liquid with the rhythm of the wiping action, which can easily lead to uneven liquid spraying, dry wiping or residual dirt, affecting the cleaning effect.

[0004] Insufficient integration: Because the spraying system and the brush system exist independently, they fail to form a highly integrated overall solution, occupy a large space, and have poor compatibility with small vehicles or specific models.

[0005] In summary, existing automotive windshield washer systems generally suffer from problems such as asynchronous spraying and wiping actions, poor cleaning performance, complex structures, and low integration. Therefore, there is an urgent need for a hydraulically driven automotive windshield washer system that can simultaneously perform spraying and reciprocating wiping, and possesses a highly integrated structure to improve cleaning performance and system reliability. Utility Model Content

[0006] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0007] Therefore, the technical solution adopted by this utility model is as follows: a car windshield washer, including a fixed base, a hydraulic drive assembly, and a cleaning brush assembly. The hydraulic drive assembly achieves reciprocating drive through the cooperation of a drive cylinder, a reversing valve, a piston, a first piston rod, and a second piston rod, and converts this into the oscillating motion of the cleaning brush assembly via a crank rod and a rotating seat. Simultaneously, the cleaning fluid is delivered to the oscillating brush and the spray strip through flow channel holes and a flexible connecting pipe, realizing synchronous operation of spraying and wiping. This structure integrates hydraulic drive, spray supply, and wiping action in one system, with a compact overall structure and high cleaning efficiency. The cleaning brush assembly includes an oscillating brush, a spray strip, and a rotating seat. One end of the oscillating brush is connected to the surface of the rotating seat, and a flexible hose is provided inside the oscillating brush and communicates with the spray strip, which is fixed to the surface of the oscillating brush. The hydraulic drive assembly includes a drive cylinder, a reversing valve, a piston, a first piston rod, and a second piston rod, both of which have flow channel holes on their surfaces. A crank rod is provided on the surface of the rotating seat, one end of which is rotatably connected to the end of the piston rod, and the other end is fixedly connected to the rotating seat. The rotary seat is also equipped with a flexible connecting pipe that communicates with the internal flow channel of the piston rod. The liquid outlet port of the reversing valve is connected to both ends of the drive cylinder.

[0008] Specifically, this structure enables a stable input of cleaning fluid and, under hydraulic drive, enables the cleaning brush assembly to perform simultaneous spraying and scraping operations.

[0009] In this example, the spray bar is further configured such that multiple spray holes are evenly distributed along the length of the brush.

[0010] Specifically, this structure allows the cleaning fluid to be sprayed evenly onto the windshield surface, ensuring cleaning coverage.

[0011] In this example, the configuration is further as follows: dynamic seals are provided at both ends of the drive cylinder, which are fitted onto the surfaces of the first piston rod and the second piston rod. The first piston rod and the second piston rod are symmetrically arranged on both sides of the piston, and their ends pass through the drive cylinder and are connected to the crankshaft.

[0012] Specifically, this structure can prevent liquid leakage while ensuring stable transmission of piston movement, thus improving the reliability of the cleaning brush assembly.

[0013] In this example, the directional valve is further configured as follows: the reversing valve is a single-way two-port valve, with its inlet connected to a high-pressure pump for supplying cleaning fluid to the drive cylinder. The outlet of the reversing valve is connected to both ends of the drive cylinder, and a check valve is provided at the connection point.

[0014] Specifically, this structure can alternately switch the direction of liquid flow, driving the piston to slide back and forth, ensuring the continuity of system operation and the unidirectionality of liquid flow.

[0015] In this example, the flow channel is further configured such that the flow channel is formed on the surface of the first piston rod and the second piston rod and near one end of the piston, and the flow channel is a one-way valve structure.

[0016] Specifically, this structure enables unidirectional input of cleaning fluid during piston reciprocating motion, preventing backflow and ensuring stable output of sprayed liquid.

[0017] In this example, it is further configured such that one end of the crank rod is rotatably connected to the end of the first piston rod or the second piston rod via a pin, and the other end is fixedly connected to the surface of the rotary seat, the interior of which is a hollow structure.

[0018] Specifically, this structure can reduce the weight of the rotating seat, lower the driving resistance, and make the cleaning brush assembly move more flexibly and respond faster.

[0019] In this example, the flexible connecting tube is made of pressure-resistant rubber tubing or corrugated hose and is arranged in a spiral contraction shape. One end of the tube is connected to the rotating seat and the other end is connected to the inner flow channel of the piston rod.

[0020] Specifically, this structure can maintain a stable liquid supply during the reciprocating deflection of the cleaning brush assembly, preventing the pipeline from breaking or leaking due to oscillation.

[0021] In this example, the brush surface is further configured such that: the brush blades are provided with elastic brush blades, which adhere to the windshield surface during the cleaning process, and the spray strips spray cleaning fluid simultaneously.

[0022] Specifically, this structure can effectively remove rainwater, mud, and dirt through a combination of spraying and wiping, thus improving the cleaning effect.

[0023] The beneficial effects achieved by this utility model are as follows: 1. In this utility model, through the linkage design of the hydraulic drive component and the cleaning brush assembly, the cleaning fluid can be stably delivered to the spray bar through the first piston rod, the second piston rod and the flexible connecting pipe under hydraulic action, and synchronous spraying and scraping are achieved during the reciprocating deflection of the cleaning brush assembly, ensuring uniform coverage of the cleaning fluid and effective removal of impurities, thereby improving cleaning efficiency.

[0024] 2. In this utility model, the drive cylinder, reversing valve, piston, first piston rod, second piston rod, crank rod, rotary seat, and components such as the swing brush and spray strip are integrated on the fixed base. The hydraulic drive, spray liquid supply and scraping action are completed in the same system. The overall integration is high, the structure is compact, and the installation and maintenance are convenient. It can effectively reduce the complexity of the system and improve the reliability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of a hydraulic drive assembly according to an embodiment of the present invention; Figure 3This is a schematic diagram of the cleaning brush assembly structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a spray bar and its partially enlarged structure according to an embodiment of the present invention.

[0026] Figure label: 100. Fixture; 200, Hydraulic drive assembly; 210, Drive cylinder; 220, Directional control valve; 230, First piston rod; 240, Second piston rod; 231, Flow channel orifice; 300. Cleaning brush assembly; 310. Swing brush; 320. Spray strip; 330. Rotary seat; 331. Crank rod; 332. Flexible connecting pipe. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0028] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.

[0029] The following describes some embodiments of the present invention, with reference to the accompanying drawings, of a car windshield washer.

[0030] Combination Figures 1-4 As shown, the present invention provides an automotive windshield washer, including a fixed base 100, a hydraulic drive assembly 200, and a cleaning brush assembly 300 rotatably mounted on both ends of the surface of the fixed base 100.

[0031] The cleaning brush assembly 300 includes a sway brush 310, a spray bar 320, and a rotating base 330 rotatably mounted on the surface of the fixed base 100. One end of the sway brush 310 is fixedly connected to the surface of the rotating base 330. The sway brush 310 has a flexible hose inside, which communicates with the spray bar 320. The spray bar 320 is fixed to the surface of the sway brush 310 and is used to spray water while cleaning.

[0032] The hydraulic drive assembly 200 includes a drive cylinder 210, a reversing valve 220, a piston 250 slidably mounted inside the drive cylinder 210, and a first piston rod 230 and a second piston rod 240 symmetrically fixed on both sides of the piston 250. The surfaces of both the first piston rod 230 and the second piston rod 240 are provided with flow channel holes 231 for liquid input and output.

[0033] A crank rod 331 is fixedly connected to the surface of the rotary seat 330. One end of the crank rod 331 is rotatably connected to the ends of the first piston rod 230 and the second piston rod 240, and the other end is fixed to the surface of the rotary seat 330, thereby converting linear motion into the swing motion of the rotary seat 330.

[0034] The surface of the rotary seat 330 is also provided with a flexible connecting pipe 332 for communicating with the inner flow channels of the first piston rod 230 and the second piston rod 240. The liquid outlet port of the reversing valve 220 is connected to the inner cavity of the drive cylinder 210, and the connection points are symmetrically arranged at both ends of the drive cylinder 210, thereby ensuring that the drive cylinder 210 can achieve reciprocating drive under hydraulic action.

[0035] In this embodiment, the spray strip 320 is fixedly mounted on the surface of the oscillating brush 310, and has a plurality of spray holes distributed along the length of the oscillating brush 310. The cleaning fluid enters the spray strip 320 through the internal hose of the oscillating brush 310 and is then evenly sprayed onto the surface of the car windshield through the spray holes. This design synchronizes the spray cleaning process with the oscillating motion of the oscillating brush 310, thereby improving cleaning efficiency.

[0036] In this embodiment, both ends of the drive cylinder 210 are provided with dynamic sealing structures that are sleeved on the surfaces of the first piston rod 230 and the second piston rod 240 to prevent liquid leakage. The first piston rod 230 and the second piston rod 240 are symmetrically arranged on both sides of the piston 250, with their ends extending through the drive cylinder 210 and connected to the crankshaft 331 on the surface of the rotary seat 330, thereby ensuring that the reciprocating motion of the drive cylinder 210 can be stably transmitted to the cleaning brush assembly 300.

[0037] In this embodiment, the reversing valve 220 is a single-way two-port valve, with its inlet connected to a high-pressure pump for inputting cleaning fluid into the drive cylinder 210. The outlet of the reversing valve 220 is connected to both ends of the drive cylinder 210, allowing for alternating switching of the liquid flow direction, thereby driving the piston 250 to reciprocate. To ensure unidirectional liquid flow within the drive cylinder 210, a check valve is provided at the connection between the drive cylinder 210 and the outlet of the reversing valve 220.

[0038] In this embodiment, the flow channel hole 231 is formed on the surface of the first piston rod 230 and the second piston rod 240 and near one end of the piston 250. The flow channel hole 231 is a one-way valve structure. This structure allows liquid to enter the internal flow channel of the piston rod in one direction under hydraulic action, preventing liquid backflow and ensuring that the cleaning fluid can be smoothly delivered to the cleaning brush assembly 300.

[0039] In this embodiment, one end of the crankshaft 331 is rotatably connected to the end of the first piston rod 230 or the second piston rod 240 via a pin, and the other end is fixedly connected to the surface of the rotating base 330. The interior of the rotating base 330 has a hollow structure, which can reduce weight during driving and improve the flexibility and response speed of the cleaning brush assembly 300.

[0040] In this embodiment, the flexible connecting pipe 332 adopts a pressure-resistant rubber tube or corrugated hose structure, arranged in a spiral contraction shape. One end of it is connected to the rotating seat 330, and the other end is connected to the inner flow channel of the first piston rod 230 or the second piston rod 240. This flexible structure can maintain the stability of the liquid circuit connection during the reciprocating oscillation of the cleaning brush assembly 300, effectively preventing pipe breakage or leakage due to oscillation motion.

[0041] In this embodiment, the surface of the oscillating brush 310 is provided with elastic brush blades, which remain in contact with the surface of the car windshield during the deflection of the oscillating brush 310. While the spray strip 320 sprays cleaning fluid, the elastic brush blades can scrape off water and impurities, thereby achieving a synergistic effect of spraying and wiping, significantly improving the cleaning effect of the car windshield.

[0042] Working principle and usage process of this utility model: This invention achieves simultaneous spray cleaning and reciprocating wiping of the car windshield through the coordinated operation of the hydraulic drive component 200 and the cleaning brush assembly 300. Its working principle is as follows: During operation, the high-pressure pump delivers the cleaning fluid to the inlet of the reversing valve 220. The reversing valve 220, acting as a single-way two-port valve, alternately switches the flow direction of the fluid under the action of an electronic control signal, allowing the cleaning fluid to enter both ends of the drive cylinder 210. The drive cylinder 210 contains a piston 250, which slides back and forth under hydraulic pressure in different directions, thereby driving the first piston rod 230 and the second piston rod 240, fixed at both ends of the piston 250, to reciprocate synchronously.

[0043] When piston 250 slides, the flow channel holes 231 on the first piston rod 230 and the second piston rod 240 open the one-way valve structure under hydraulic action, allowing liquid to enter its internal flow channel and be transported to the rotary seat 330 through the flexible connecting pipe 332. The liquid is then introduced into the spray strip 320 through the hose inside the swing brush 310, thus achieving uniform distribution and spraying of the spray liquid. Simultaneously, crank rod 331 converts the linear reciprocating motion of the piston rod into the swinging motion of the rotary seat 330, thereby driving the swing brush 310 and the spray strip 320 to reciprocate, achieving synchronous scraping.

[0044] During this process, the spray strip 320 has multiple spray holes distributed along the length of the oscillating brush 310, so that the cleaning liquid can cover the windshield surface; the surface of the oscillating brush 310 is provided with elastic brush blades, which adhere closely to the windshield surface during deflection, effectively scraping away rainwater, dirt and impurities, and achieving the synergistic effect of spraying and wiping.

[0045] Usage process Start the liquid supply: The high-pressure pump starts and inputs the cleaning fluid to the drive cylinder 210 through the reversing valve 220.

[0046] Drive piston: The reversing valve 220 alternately switches the direction of fluid flow, causing the piston 250 to slide back and forth in the drive cylinder 210. At the same time, through the action of the check valve, the fluid flow inside the drive cylinder 210 in the direction of piston 250 movement is output through the flow channel inside the first piston rod 230 or the second piston rod 240 on the corresponding side. Meanwhile, in the direction opposite to the direction of piston 250 movement, the volume of the drive cylinder 210 increases while the reversing valve 220 inputs fluid flow.

[0047] Linkage transmission: The first piston rod 230 and the second piston rod 240 move synchronously with the piston 250, driving the crank rod 331 to switch to swing motion, so that the rotary seat 330 drives the swing brush 310 to reciprocate and clean.

[0048] Spray cleaning: Liquid is transported to the inside of the oscillating brush 310 through the flow channel hole 231 and the flexible connecting pipe 332, and then evenly sprayed onto the windshield surface through the spray holes of the spray bar 320.

[0049] Scraping and cleaning: The elastic brush blades on the surface of the 310 swing brush, under the action of sprayed cleaning liquid, swing to scrape the surface of the windshield, removing dirt and water stains.

[0050] Cyclic operation: The reversing valve 220 continuously alternates directions, driving the piston 250 to reciprocate continuously, and the cleaning brush group 300 continuously sprays and swings to clean, forming an efficient cleaning cycle.

[0051] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A car windshield washer, characterized in that, It includes a fixed base (100), a hydraulic drive assembly (200), and a cleaning brush assembly (300) rotatably mounted on both ends of the surface of the fixed base (100). The cleaning brush assembly (300) includes a swing brush (310), a spray bar (320), and a rotating base (330) rotatably mounted on the surface of the fixed base (100). One end of the swing brush (310) is connected to the surface of the rotating base (330), and the swing brush (310) is provided with a flexible hose and communicates with the spray bar (320) through the flexible hose. The spray bar (320) is fixed to the surface of the swing brush (310). The hydraulic drive assembly (200) includes a drive cylinder (210), a reversing valve (220), a piston (250) slidably mounted inside the drive cylinder (210), and a first piston rod (230) and a second piston rod (240) symmetrically fixed on both sides of the piston (250). The surfaces of the first piston rod (230) and the second piston rod (240) are provided with flow channel holes (231). A crank rod (331) is fixedly connected to the surface of the rotary seat (330), and one end of the crank rod (331) is rotatably connected to the ends of the first piston rod (230) and the second piston rod (240). The surface of the rotary seat (330) is provided with a flexible connecting tube (332) for connecting with the inner flow channels of the first piston rod (230) and the second piston rod (240). The outlet port of the reversing valve (220) is connected to the inner cavity of the drive cylinder (210), and the connection is symmetrically arranged at both ends of the drive cylinder (210).

2. The car windshield washer according to claim 1, characterized in that, The spray strip (320) is fixedly installed on the surface of the sway brush (310) and has several spray holes distributed along the length of the sway brush (310) for uniformly spraying the cleaning liquid onto the surface of the car windshield.

3. A car windshield washer according to claim 1, characterized in that, Both ends of the drive cylinder (210) are provided with dynamic seals that are sleeved on the surfaces of the first piston rod (230) and the second piston rod (240). The first piston rod (230) and the second piston rod (240) are symmetrically arranged on both sides of the piston (250), and their ends pass through the drive cylinder (210) and are connected to the crank rod (331) on the surface of the rotary seat (330).

4. A car windshield washer according to claim 1, characterized in that, The reversing valve (220) is a single-way double-pass valve. The inlet is connected to a high-pressure pump for inputting cleaning fluid. The outlet of the reversing valve (220) is connected to both ends of the drive cylinder (210) to drive the piston (250) to reciprocate. A one-way valve is provided at the connection between the drive cylinder (210) and the outlet of the reversing valve (220) for unidirectional flow of liquid.

5. A car windshield washer according to claim 1, characterized in that, The flow channel hole (231) is opened on the surface of the first piston rod (230) and the second piston rod (240) and close to one end of the piston (250). The flow channel hole (231) is a one-way valve structure.

6. A car windshield washer according to claim 1, characterized in that, One end of the crank rod (331) is rotatably connected to the end of the first piston rod (230) or the second piston rod (240) via a pin, and the other end is fixedly connected to the surface of the rotary seat (330), which has a hollow internal structure.

7. A car windshield washer according to claim 1, characterized in that, The flexible connecting pipe (332) is made of pressure-resistant rubber tube or corrugated hose in a spiral contraction shape. One end of it is connected to the rotating seat (330), and the other end is connected to the inner flow channel of the first piston rod (230) or the second piston rod (240).

8. A car windshield washer according to claim 1, characterized in that, The surface of the swing brush (310) is provided with elastic brush blades, which are attached to the surface of the car windshield to scrape off water and impurities, while the spray strip (320) sprays cleaning liquid at the same time.

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