A marine windshield wiper

Abstract

A marine wiper comprises a motor, a drive wheel, an adjustment plate, a connecting rod mechanism, a rotating shaft, and a wiper arm; the motor is used to drive the drive wheel to rotate, and the adjustment plate is mounted on one side of the drive wheel; one end of the adjustment plate is hinged to the side of the drive wheel, and the other end is provided with an arcuate groove, which is concentric with the hinged end of the adjustment plate. A locking screw is provided in the arcuate groove for movably locking the adjustment plate to the side of the drive wheel; the adjustment plate is provided with an eccentric shaft, which can change its distance from the center of the drive wheel as the adjustment plate is rotated on the drive wheel; the connecting rod mechanism is connected between the eccentric shaft and the rotating shaft. Thus, by providing an adjustable adjustment plate between the drive wheel and the connecting rod mechanism, the distance between the eccentric shaft and the center of the drive wheel can be adjusted, thereby adjusting the swing amplitude of the swing arm, and further adjusting the rotation angle of the rotating shaft and the wiper arm.

Description

Technical Field

[0001] The present invention relates to the technical field of yachts, in particular to a windshield wiper for boats. Background Art

[0002] A marine wiper is a sheet-type structure installed in front of the porthole on the hull. It consists of an electric motor, a reducer, a connecting rod mechanism, a wiper arm spindle, a wiper blade assembly, etc. Its main function is to sweep away rain, snow and dust that obstruct the view on the porthole to ensure that the driver's vision is not affected when driving the yacht.

[0003] Existing yachts come in a variety of styles and usually have portholes of different sizes and widths. However, the wiper blades of commonly used marine wipers have a single fixed swing angle and cannot be universally used. Therefore, different marine wipers need to be designed for portholes of different sizes, resulting in high manufacturing costs.

[0004] Therefore, a wiper drive component, such as that disclosed in Chinese patent CN 206254965 U, provides a solution that can adjust the length of the entire connecting rod, thereby changing the wiping area of the wiper. This allows the wiper arm to cover different wiping areas, adapting to windshield sizes. However, this solution is relatively complex and costly, and the adjustment mechanism is external, making it susceptible to water corrosion.

[0005] Another example is the wiper and vehicle equipped with the same disclosed in Chinese patent CN 218703137 U. In this solution, the drive assembly drives the wiper arm to move through the transmission assembly. The rotation of the planetary drive wheel can drive the wiper arm to swing, and the revolution of the planetary drive wheel can change the swing center of the wiper arm. Therefore, the rotation and revolution of the planetary drive wheel can be controlled according to the shape of the windshield to increase the wiping area of the wiper arm. However, this solution uses a large planetary drive wheel for adjusting the angle, which requires a larger space for installation, resulting in a larger product size. In addition, the crank-connecting rod mechanism is connected with the drive wheel, which also has the disadvantages of complex structure and high cost. Summary of the Invention

[0006] The object of the present invention is to provide a marine windshield wiper with an adjustable wiping angle, which can adapt to portholes of different sizes and has the advantages of simple structure, convenient adjustment and good versatility.

[0007] In order to achieve the above object, the solution of the present invention is:

[0008] A marine windshield wiper comprises a motor, a driving wheel, an adjusting plate, a connecting rod mechanism, a rotating shaft and a wiper arm;

[0009] The motor is used to drive the driving wheel to rotate, and the adjustment plate is installed on one side of the driving wheel;

[0010] One end of the adjustment plate is hinged to the side of the driving wheel, and the other end is provided with an arcuate groove, which is concentric with the hinged end of the adjustment plate. A locking screw is provided in the arcuate groove for movably locking the adjustment plate to the side of the driving wheel; the adjustment plate is provided with an eccentric shaft, which can change the distance from the center of the driving wheel as the adjustment plate rotates on the driving wheel;

[0011] The connecting rod mechanism includes a connecting rod and a rocker arm, one end of the connecting rod and the rocker arm are hingedly connected to each other, the other end of the connecting rod is hingedly connected to the eccentric shaft, and the other end of the rocker arm is connected to the rotating shaft; the rotation of the driving wheel drives the adjusting plate to rotate synchronously, and the eccentric shaft of the adjusting plate drives the connecting rod to rotate eccentrically, and then the rotating shaft is rotated through the rocker arm, and the rotation of the rotating shaft drives the wiper arm to swing.

[0012] Furthermore, a hinge hole for a rotating screw to pass through is provided at the hinge end of the adjustment plate, and the rotating screw is locked and connected to the driving wheel; the adjustment plate can rotate with the rotating screw as the axis.

[0013] Furthermore, the adjustment plate is provided with two arc-shaped grooves arranged at intervals, the two arc-shaped grooves and the hinged end of the adjustment plate are distributed in a triangular shape, and locking screws are provided in each arc-shaped groove.

[0014] Furthermore, it also includes a shell mainly composed of a lower shell, a waterproof sealing ring and an upper cover; the lower shell has a shell space, the top of the shell space is open, the upper cover is detachably installed at the opening, and the waterproof sealing ring is sealed between the upper cover and the lower shell; the driving wheel, the adjustment plate and the connecting rod mechanism are all installed in the shell space, the driving wheel is rotatably installed in the shell space, the motor is installed on one side of the lower shell and is transmission-connected to the driving wheel; one end of the rotating shaft is rotatably inserted into the shell space, and the other end extends out of the shell space and is connected to the wiper arm.

[0015] Furthermore, the driving wheel is a worm gear; the motor is connected to the worm gear through a worm; a rotating shaft is provided at the bottom of the driving wheel, the rotating shaft is rotatably installed in a rotating shaft groove provided in the lower shell, and a spring gasket is also provided between the bottom of the rotating shaft and the bottom of the rotating shaft groove.

[0016] Furthermore, the driving wheel is a worm gear; the motor is connected to the worm gear through a worm; the worm gear and the worm gear are meshed with each other and are both rotatably installed in the shell space of the shell; the motor is installed in the motor shell so as to be movable forward and backward, and the worm is installed in the shell space so as to be movable forward and backward; ball bearings are respectively provided at the front and rear ends of the motor, and the outer periphery of the ball bearings is fixed to the motor shell; the front end of the motor is directly connected to one end of the worm gear, and an adjustment hole is provided on the motor shell at the rear of the motor, an adjustment screw is passed through the adjustment hole, a ball is provided between the adjustment screw and the rear end of the motor, and a recessed hole is provided at the rear end of the motor for partially embedding the ball.

[0017] Furthermore, the eccentric shaft is integrally formed and protrudes from the adjustment plate; a rocker connecting shaft is integrally formed and protrudes from one end of the rocker; through holes are respectively provided at both ends of the connecting rod for the eccentric shaft and the rocker connecting shaft to pass through, and the parts of the eccentric shaft and the rocker connecting shaft passing through the through holes are limited by retaining springs at both ends of the connecting rod.

[0018] Furthermore, it also includes a control component; the control component includes a mounting plate, a switching switch, three conductive springs and a conductive disc; the switching switch is mounted on the mounting plate; the conductive disc is coaxially mounted on the other side of the driving wheel, and the other side of the driving wheel is made of insulating material; the conductive disc has three radially connected annular areas, the three annular areas are divided into an inner annular area, a middle annular area and an outer annular area, and the inner and outer annular areas respectively have a notch, and the two notches are centrally symmetrically distributed along the axis of the conductive disc; the three conductive springs are arranged in sequence, with inner and outer spacing, and the conductive disc is ... and the conductive disc is arranged in sequence, The inner spring piece, the middle spring piece and the outer spring piece are respectively arranged, one end of each conductive spring piece is installed on the mounting plate, and the middle spring piece is used to be directly connected to the external circuit, and the switching switch is used to control the inner spring piece and the outer spring piece to be connected to the external circuit; the other ends of the inner spring piece, the middle spring piece and the outer spring piece are independently slid and abutted against the inner ring area, the middle ring area and the outer ring area of the conductive disc, and in the initial state, one of the inner spring piece or the outer spring piece abuts against the position of the corresponding ring area close to one end of the notch; the external circuit is used to control the operation of the wiper motor.

[0019] Furthermore, the invention further comprises a control assembly; the control assembly comprises a protrusion, a spring piece, a first connecting piece, and a second connecting piece; the protrusion is synchronously rotated and mounted on the end of the rotating shaft at the center of the driving wheel, and the protrusion is cam-shaped and has a radially protruding convex portion; the spring piece is disposed on one side of the end of the rotating shaft, one end of the spring piece is connected and fixed to the first connecting piece, and the other end of the spring piece is movably in contact with the second connecting piece;

[0020] When the convex portion of the protrusion presses against the spring sheet as the shaft rotates, the spring sheet is compressed and deformed, causing the other end to move away from the second connecting piece, and disconnecting the electrical connection between the first connecting piece and the second connecting piece; and when the convex portion of the protrusion moves away from the spring sheet, the other end of the spring sheet is reset and abuts against the second connecting piece, so that the first connecting piece and the second connecting piece are electrically connected; the first connecting piece and the second connecting piece are both connected to an external circuit; the external circuit is used to control the operation of the wiper motor.

[0021] Furthermore, the protrusion is detachably mounted on the end of the rotating shaft; before the driving wheel rotates, the connecting line between the convex portion of the protrusion and the axis of the rotating shaft is perpendicular to the spring sheet, and the protrusion is arranged to press against or away from the spring sheet.

[0022] With the above technical solution, an adjustment plate is provided between the drive wheel and the connecting rod mechanism. One end of the adjustment plate is rotatably connected to the side of the drive wheel, and the other end can slide along the locking screw using an arcuate groove after loosening a locking screw. This allows the adjustment of the position of the adjustment plate on the side of the drive wheel, and thus the distance between the eccentric shaft and the center of the drive wheel. This allows the length of the crank of the connecting rod structure formed between the drive wheel and the connecting rod mechanism to be easily adjusted, thereby adjusting the swing amplitude of the swing arm and, in turn, the rotation angle of the rotating shaft and the wiper arm. This can meet the cleaning range requirements of various sizes of portholes on different yachts or at different locations on yachts, effectively improving the versatility and practicality of marine wipers and reducing manufacturing costs. Furthermore, the present invention utilizes a compact adjustment plate to achieve swing amplitude adjustment. Compared with existing technologies, it has a simple structure, stable and reliable operation, and low cost, resulting in better economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of a first embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a partial structure of the first embodiment of the present invention;

[0025] Figure 3 for Figure 2 a top view of the structure shown;

[0026] Figure 4 for Figure 2 an exploded view of the structure shown;

[0027] Figure 5 for Figure 2 a cross-sectional view of the structure shown;

[0028] Figure 6 for Figure 2 Another exploded view of the structure shown;

[0029] Figure 7 A bottom view of the driving wheel and the conductive disc according to the first embodiment of the present invention;

[0030] Figure 8 for Figure 2 Another cross-sectional view of the structure shown;

[0031] Figure 9 This is a wiring diagram of the control assembly and external circuits according to the first embodiment of the present invention, showing the left stop control state;

[0032] Figure 10 This is a wiring diagram of the control assembly and external circuits of Example 1 of the present invention, showing the right stop control state;

[0033] Figure 11This is a schematic diagram of the structure of the control component of Example 2 of the present invention;

[0034] Figure 12 This is a schematic diagram of the assembly of the bumps of the control assembly of the second embodiment of the present invention;

[0035] Figure 13 This is a bottom view of the bump according to the second embodiment of the present invention.

[0036] Description of labels:

[0037] Example 1

[0038] Housing 1, lower housing 11, shaft groove 111, waterproof sealing ring 12, upper cover 13, housing space 14, motor 2, worm 21, motor housing 22, adjustment hole 221, adjustment screw 222, ball 23, ball bearing 24, recessed hole 25, drive wheel 3, shaft 31, rotating sleeve 32, spring washer 33, bottom screw 34, adjustment plate 4, arc groove 41, locking screw 411, hinged end 42, eccentric shaft 43, rotating screw 44, hinge hole 45, connecting rod mechanism 5, connecting rod 51, through hole 511, retaining spring 512, rocker arm 52, rocker arm connecting shaft 521, rotating shaft 6, wiper arm 7, control assembly 8, mounting plate 81, switching switch 82, conductive spring clip 83, middle spring clip 831, inner spring clip 832, outer spring clip 833, conductive disc 84, inner annular area 841, middle annular area 842, outer annular area 843, notch 844, external circuit 9.

[0039] Example 2

[0040] Positioning plane 311 , card slot 312 , control assembly 8 , protrusion 85 , protrusion 851 , positioning card hole 852 , inner plane 8521 , card block 8522 , spring piece 86 , connecting portion 861 , first connecting piece 87 , second connecting piece 88 , screw 89 , metal seat 90 . DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0042] Example 1

[0043] like Figures 1 to 7 As shown, a marine wiper of this embodiment includes a housing 1, a motor 2, a driving wheel 3, an adjustment plate 4, a connecting rod mechanism 5, a rotating shaft 6, a wiper arm 7 and a control assembly 8.

[0044] Specific as Figure 2 and Figure 4 As shown, the motor 2 is used to drive the driving wheel 3 to rotate, and the adjustment plate 4 is installed on one side of the driving wheel 3. The adjustment plate 4 of this embodiment is installed on the top surface of the driving wheel 3 that is arranged to rotate horizontally.

[0045] One end of the adjustment plate 4 is hinged to the side of the driving wheel 3, and the other end is provided with an arc groove 41, which is concentric with the hinge end 42 of the adjustment plate 4. A locking screw 411 is provided in the arc groove 41 for movably locking the adjustment plate 4 to the side of the driving wheel 3; an eccentric shaft 43 is provided on the adjustment plate 4, and the eccentric shaft 43 can change the distance from the center of the driving wheel 3 as the adjustment plate 4 rotates on the driving wheel 3.

[0046] The connecting rod mechanism 5 includes a connecting rod 51 and a rocker rod 52, one end of the connecting rod 51 and the rocker rod 52 are hingedly connected to each other, the other end of the connecting rod 51 is hingedly connected to the eccentric shaft 43, and the other end of the rocker rod 52 is connected to the rotating shaft 6; the rotation of the driving wheel 3 drives the adjusting plate 4 to rotate synchronously, and the eccentric shaft 43 of the adjusting plate 4 drives the connecting rod 51 to rotate eccentrically, and then drives the rotating shaft 6 to rotate through the rocker rod 52, and the rotation of the rotating shaft 6 drives the wiper arm 7 to swing.

[0047] In this way, an adjustment plate 4 is provided between the driving wheel 3 and the connecting rod mechanism 5. One end of the adjustment plate 4 can be rotatably connected to the side of the driving wheel 3, and the other end can slide along the locking screw 411 using the arc groove 41 after loosening the locking screw 411, so as to adjust the position of the adjustment plate 4 on the side of the driving wheel 3, and then adjust the distance between the eccentric shaft 43 and the center of the driving wheel 3, that is, the size and length of the crank of the connecting rod structure formed between the driving wheel 3 and the connecting rod mechanism 5 can be conveniently adjusted, thereby realizing the adjustment of the swing amplitude of the rocker arm 52, and then realizing the adjustment of the rotation angle of the rotating shaft 6 and the wiper arm 7.

[0048] When the marine wiper of this embodiment is actually installed and used, the adjustment plate 4 can be adjusted in advance according to the size of the porthole on the ship and the required swing angle range of the wiper arm 7. The adjustment can be completed by simply loosening or tightening the locking screw 411. It is convenient and quick to use. After adjustment, the adjustment plate 4 is locked with the locking screw 411. The structure is stable and reliable, and can ensure the smooth movement of the connecting rod mechanism 5.

[0049] The swing angle range of the wiper arm 7 of this embodiment can be adjusted between 45° and 110°. The specific angle range can also be adjusted by the length of the arc groove 41 and the position of the eccentric shaft 43.

[0050] See Figure 3In this embodiment, the adjustment plate 4 can be roughly fan-shaped and further provided with two arcuate slots 41 spaced apart from each other. The two arcuate slots 41 and the hinged end 42 of the adjustment plate 4 can be arranged in a triangular pattern. Locking screws 411 are provided in each of the arcuate slots 41. This can enhance the locking and fixing effect between the adjustment plate 4 and the drive wheel 3 and improve stability.

[0051] like Figure 4 Specifically, a hinge hole 45 for a rotating screw 44 to pass through may be provided at the hinge end 42 of the adjustment plate 4, and the rotating screw 44 is locked and connected to the driving wheel 3; the adjustment plate 4 can rotate around the rotating screw 44 as the axis.

[0052] The shell 1 of this embodiment is mainly composed of a lower shell 11, a waterproof sealing ring 12 and an upper cover 13; the lower shell 11 has a shell space 14, the top of the shell space 14 is open, the upper cover 13 is detachably installed at the open position, and the waterproof sealing ring 12 is sealed between the upper cover 13 and the lower shell 11; the driving wheel 3, the adjusting plate 4 and the connecting rod mechanism 5 are all installed in the shell space 14, the driving wheel 3 is rotatably installed in the shell space 14, the motor 2 can be installed on the horizontal side of the lower shell 11 and is transmission-connected to the driving wheel 3; the driving wheel 3 of this embodiment can be a worm gear; the motor 2 can be transmission-connected to the worm gear (driving wheel 3) through a worm 21; the worm 21 and the worm gear (driving wheel 3) are meshed with each other and can be rotatably installed in the shell space 14 of the shell 1; of course, the motor 2 can also be transmission-connected to the driving wheel 3 in other ways, and is not limited to this.

[0053] One end of the rotating shaft 6 is rotatably inserted into the housing space 14 to be connected to the rocker rod 52 , and the other end extends out of the housing space 14 and is connected to the wiper arm 7 .

[0054] Therefore, by utilizing the shell 1 composed of the upper cover 13 and the lower shell 11, various components can be accommodated and protected. When the adjustment plate 4 needs to be adjusted, it is only necessary to open the upper cover 13 to achieve the adjustment. In addition, a waterproof sealing ring 12 is provided between the upper cover 13 and the lower shell 11 to improve the waterproof performance, making the marine wiper more suitable for a water environment, and can be waterproof, moisture-proof and dust-proof, thereby increasing the service life of the product.

[0055] like Figure 6 and Figure 8 In this embodiment, since the wiper arm 7 exerts upward and downward forces on the worm wheel (driving wheel 3) when it moves, it is easy to cause the driving wheel 3 to rotate unsmoothly. Therefore, in order to improve the smoothness of the rotation of the driving wheel 3, refer to Figure 6In this embodiment, a rotating shaft 31 is provided at the bottom of the driving wheel 3. The rotating shaft 31 is rotatably mounted in a rotating shaft groove 111 provided in the lower housing 11. Specifically, a rotating sleeve 32 may be provided between the rotating shaft 31 and the rotating shaft groove 111. The rotating sleeve 32 may be a needle bearing or an oil-impregnated copper sleeve, etc., to facilitate the rotation of the driving wheel 3. A spring washer 33 may be provided between the bottom of the rotating shaft 31 and the bottom of the rotating shaft groove 111. The provision of the spring washer 33 allows the driving wheel 3 to move up and down, thereby offsetting the impact force of the wiper arm 7 on the worm gear.

[0056] The spring washer 33 can be a wave washer and can be locked and installed by a bottom screw 34, which makes installation more convenient.

[0057] Another example Figure 5 As shown, a motor housing 22 may be installed on the outside of the motor 2 of this embodiment. Due to tolerances in the production of various parts of the product, the meshing between the worm 21 and the worm wheel (driving wheel 3) is prone to errors after conventional assembly, resulting in insufficient transmission smoothness. Therefore, in this embodiment, the motor 2 is configured to be mounted in the motor housing 22 so as to be movable back and forth, and the worm 21 is mounted in the housing space 14 so as to be movable back and forth, and a ball 23 is provided for abutment, so as to improve the meshing accuracy of the worm 21 and the worm wheel (driving wheel 3).

[0058] Specifically, the front and rear ends of the motor 2 can be respectively provided with ball bearings 24, the outer periphery of the ball bearings 24 being fixed to the motor housing 22 to facilitate the forward and backward movement of the motor 2. The front end of the motor 2 can be directly connected to one end of the worm 21 (the figure is a simplified drawing, omitting the internal structure of the motor 2). An adjustment hole 221 is provided in the motor housing 22 at the rear of the motor 2, and an adjustment screw 222 is inserted into the adjustment hole 221. A ball 23 is provided between the adjustment screw 222 and the rear end of the motor 2, and a recessed hole 25 is provided at the rear end of the motor 2 for partially embedding the ball 23. Thus, by providing the ball 23 and the adjustment screw 222, the axial position of the motor 2 and the worm 21 can be finely adjusted so that the worm 21 can be precisely engaged with the worm wheel. The ball 23 can be a steel ball, and the adjustment screw 222 can be a headless screw.

[0059] For example Figure 4 As shown, in this embodiment, the eccentric shaft 43 can be integrally formed and protrudes from the adjustment plate 4; a rocker connecting shaft 521 is integrally formed and protrudes from one end of the rocker arm 52; through-holes 511 are provided at each end of the connecting rod 51 for the eccentric shaft 43 and the rocker connecting shaft 521 to pass through, respectively. Retaining springs 512 are provided at each end of the connecting rod 51 to prevent the eccentric shaft 43 and the rocker connecting shaft 521 from passing through the through-holes 511. Thus, by providing the retaining springs 512 to secure the connecting rod 51, the rotational connection is ensured while facilitating assembly and disassembly, facilitating adjustment of the adjustment plate 4 and the locking screw 411.

[0060] like Figure 6 and Figure 7 As shown, the control assembly 8 of this embodiment includes a mounting plate 81, a switch 82, three conductive springs 83, and a conductive disc 84. By configuring the control assembly 8, a control signal can be generated by the rotation of the drive wheel 3 to assist in switching the wiper arm 7 to the left or right stop position.

[0061] The switch 82 and the conductive spring 83 are connected and mounted on the mounting plate 81 ; and the mounting plate 81 can be installed in the housing space 14 for waterproof and moisture-proof protection.

[0062] The conductive disc 84 is made of a conductive material (such as beryllium copper) and is coaxially mounted on the other side of the driving wheel 3. The other side of the driving wheel 3 is made of insulating material. In this embodiment, the driving wheel 3 is made entirely of plastic, and the conductive disc 84 is attached to the bottom surface of the driving wheel 3.

[0063] The conductive disc 84 has three radially connected annular areas, which are divided into an inner annular area 841, a middle annular area 842 and an outer annular area 843. The inner annular area 841 and the outer annular area 843 each have a notch 844. The two notches 844 are centrally symmetrically distributed along the axis, and the notch 844 can be arc-shaped.

[0064] The three conductive spring clips 83 are divided into an inner spring clip 832, a middle spring clip 831 and an outer spring clip 833, which are arranged side by side with inner and outer intervals in sequence. One end of each conductive spring clip 83 is installed on the mounting plate 81, and the middle spring clip 831 is used to be directly connected to the external circuit 9, and the switching switch 82 is used to control the inner spring clip 832 and the outer spring clip 833 to be connected to the external circuit 9; the other ends of the inner spring clip 832, the middle spring clip 831 and the outer spring clip 833 are independently slid and abutted against the inner annular area 841, the middle annular area 842 and the outer annular area 843 of the conductive disc 84, and in the initial state, one of the inner spring clip 832 or the outer spring clip 833 abuts against the position of the corresponding annular area near one end of the notch 844; the external circuit 9 is used to control the operation of the wiper motor 2.

[0065] like Figure 6 As shown, in the initial state of this embodiment, the inner spring piece 832 abuts against the upper end of the inner annular area 842 near the notch 844; Figure 9As shown, when it is necessary to control the wiper arm 7 of the marine wiper to stop at the left stop (the left stop means that the wiper arm 7 swings from left to right and then from right to left for a stroke and stops at the left side), before installing the wiper, the switch 82 can be pressed to connect the end of the inner spring piece 832 connected to the mounting plate 81 to the external circuit 9, and the end of the middle spring piece 831 connected to the mounting plate 81 is also connected to the external circuit 9; thus, when the wiper is working, firstly, the middle spring piece 831 can always abut against the middle annular area 842 as the driving wheel 3 rotates; secondly, when the driving wheel 3 rotates counterclockwise, it drives the conductive disc 84 to rotate counterclockwise (see FIG. 1 ). Figure 7 ), the upper end of the inner spring piece 832 abuts against the inner annular area 841 and maintains electrical connection with the middle spring piece 831 (see Figure 6 ), and after the conductive disc 84 rotates about 290° counterclockwise (equivalent to the drive wheel 3 rotating 290° to drive the wiper arm 7 to swing from left to right and then from right to left for a stroke), it enters the gap 844 of the inner annular area 841 and then disconnects the contact and electrical connection with the conductive disc 84; that is, when the inner spring piece 832 abuts against the inner annular area 841, the inner spring piece 832 and the middle spring piece 831 are conductively connected and conduct the power supply of the external circuit 9 to the motor 2, maintaining the operation of the motor 2, and when the inner spring piece 832 rotates into the gap 844, that is, after the wiper arm 7 swings from left to right and then from right to left for a stroke, the electrical connection between the middle spring piece 831 and the inner spring piece 832 is just disconnected, thereby generating a left stop control signal, thereby interrupting the power supply of the external circuit 9 to the motor 2, realizing the stop of the motor 2, thereby realizing the stop of the wiper arm 7 and achieving the purpose of left stop.

[0066] Similarly, if Figure 10 As shown, when it is necessary to control the wiper arm 7 of the marine wiper to stop at the right stop (the right stop means that the wiper arm 7 stops at the right side after swinging halfway from left to right), before installing the wiper, the switch 82 can be pressed to connect the end of the outer spring piece 833 connected to the mounting plate 81 to the external circuit 9, and the end of the middle spring piece 831 connected to the mounting plate 81 is also connected to the external circuit 9; thus, when the wiper is working, firstly, the middle spring piece 831 can always abut against the middle annular area 842 as the driving wheel 3 rotates; secondly, when the driving wheel 3 rotates counterclockwise, it drives the conductive disc 84 to rotate counterclockwise (see FIG. 1 ). Figure 7 ), the upper end of the outer spring piece 833 abuts against the outer annular area 843 and maintains electrical connection with the middle spring piece 831 (see Figure 6), and after the conductive disc 84 rotates counterclockwise by about 110° (equivalent to the driving wheel 3 rotating 110° to drive the wiper arm 7 to swing half a stroke from left to right), it enters the gap 844 of the outer annular area 843 and then disconnects the contact and electrical connection with the conductive disc 84; that is, when the outer spring piece 833 abuts against the outer annular area 843, the outer spring piece 833 and the middle spring piece 831 are conductively connected and conduct the power supply of the external circuit 9 to the motor 2, maintaining the operation of the motor 2, and when the outer spring piece 833 rotates into the gap 844, that is, after the wiper arm 7 swings half a stroke from left to right, the electrical connection between the middle spring piece 831 and the outer spring piece 833 is just disconnected, thereby generating a right stop control signal, thereby interrupting the power supply of the external circuit 9 to the motor 2, realizing the stop of the motor 2, thereby realizing the stop of the wiper arm 7 and achieving the purpose of right stop.

[0067] The specific circuit structure of the external circuit 9 can refer to the prior art. The control component 8 of this embodiment mainly provides a left stop or right stop control signal through the cooperation of the conductive spring 83 and the conductive disc 84.

[0068] Example 2

[0069] like Figures 11 to 13 As shown, the structure of this embodiment is basically the same as that of the above embodiment, with the main difference being that the motor 2 of this embodiment is installed above the housing 1, the rotating shaft 31 of the driving wheel 3 may not be provided with a spring washer 33, and the control component 8 adopts other structures.

[0070] Specifically, the control component 8 includes a protrusion 85, a spring piece 86, a first connecting piece 87 and a second connecting piece 88; the rotating shaft 31 at the center of the driving wheel 3 extends out of the end of the shell 1 and the protrusion 85 is installed for synchronous rotation. The protrusion 85 is cam-shaped and has a radially protruding protrusion 851; the spring piece 86 is arranged on one side of the end of the rotating shaft 31, and the middle part can be close to the rotating shaft 31. One end of the spring piece 86 is connected and fixed to the first connecting piece 87, and the other end of the spring piece 86 is movably contacted with the second connecting piece 88.

[0071] When the convex portion 851 of the protrusion 85 abuts against the spring piece 86 as the shaft 31 rotates, the spring piece 86 is compressed and deformed, causing the other end to move away from the second connecting piece 88, thereby disconnecting the electrical connection between the first connecting piece 87 and the second connecting piece 88; and when the convex portion 851 of the protrusion 85 moves away from the spring piece 86, the other end of the spring piece 86 returns to its original position and abuts against the second connecting piece 88, thereby connecting the first connecting piece 87 and the second connecting piece 88 electrically. The first connecting piece 87 and the second connecting piece 88 are connected to an external circuit (not shown).

[0072] Thus, in this embodiment, by providing a cam-shaped protrusion 85, when the motor 2 is energized to drive the driving wheel 3 to rotate, the driving wheel 3 can not only drive the wiper arm 7 to move through the connecting rod mechanism 5, but also drive the protrusion 85 to rotate through the rotating shaft 31, so that the protrusion 851 can rotate to abut against the elastic piece 86. Figure 11 For example, in this embodiment, when the driving wheel 3 rotates 180 degrees, the wiper arm 7 can be linked to swing half a stroke from left to right. At this time, the driving wheel 3 shaft 31 synchronously drives the protrusion 85 to rotate 180 degrees and then presses against the spring piece 86, so that the other end of the spring piece 86 is away from the second connecting piece 88, so that the first connecting piece 87 and the second connecting piece 88 are disconnected, that is, a right stop control signal is generated. Since the first connecting piece 87 and the second connecting piece 88 are connected to the external circuit, the control signal is triggered to realize the power-off shutdown of the motor 2, which can stop the driving wheel 3, that is, the braking purpose of stopping the wiper arm 7 from swinging and stopping on the right side can be achieved.

[0073] Moreover, when the spring piece 86 of this embodiment is not subjected to force, the other end is in contact with the second connecting piece 88, and there is no long-term elastic abutment, which is not easy to produce elastic fatigue; in the process of the driving wheel 3 rotating one circle, the spring piece 86 is only deformed by force and accumulates force to separate from the second connecting piece 88 once, and the spring piece 86 automatically resets after the protrusion 851 leaves the spring piece 86. This structure can effectively increase the service life of the spring piece 86 and improve product reliability.

[0074] The protrusion 85 is detachably mounted on the end of the rotating shaft 31 ; before the driving wheel 3 rotates, the connecting line between the convex portion 851 of the protrusion 85 and the axis of the rotating shaft 31 is perpendicular to the spring 86 , and the convex portion 851 is set to press against or away from the spring 86 .

[0075] By arranging the drive wheel 3 to be removable, it is possible to switch between the left and right stops when the wiper arm 7 is reset. Specifically, when the protrusion 85 is initially positioned with the convex portion 851 away from the spring 86, the drive wheel 3 needs to rotate 180 degrees to drive the convex portion 851 of the protrusion 85 to abut against the spring 86, triggering a control signal. In other words, the control signal is triggered when the wiper arm 7 swings halfway from left to right, causing the wiper arm 7 to stop at the right position. When the protrusion 85 is initially positioned with the convex portion 851 abutting against the spring 86, the drive wheel 3 needs to rotate 360 degrees to drive the convex portion 851 of the protrusion 85 to abut against the spring 86 again, triggering a control signal. In other words, the control signal is triggered when the wiper arm 7 swings from left to right and then from right to left for a full stroke, causing the wiper arm 7 to reset and stop at the left position.

[0076] In summary, this embodiment provides another control component 8, which can also provide a left stop or right stop control signal through the cooperation of the drive wheel 3, the protrusion 85 and the spring 86, and the spring 86 has a long service life and the product is more reliable.

[0077] For further information, see Figure 13 In this embodiment, the outer peripheral wall of the distal end of the drive shaft 31 has two symmetrically arranged positioning flats 311. The central portion of the protrusion 85 includes a positioning hole 852 for the distal end of the shaft 31 to pass through. The positioning hole 852 includes two inner flat surfaces 8521 aligned with the positioning flats 311. The connecting line between the protrusion 851 and the center of the protrusion 85 is perpendicular to the inner flat surfaces 8521. The positioning flats 311 and the positioning hole 852 with the inner flat surfaces 8521 facilitate the installation and positioning of the protrusion 85 and the shaft 31, ensuring their synchronous rotation.

[0078] Furthermore, two spaced apart and radially inwardly convex blocks 8522 are provided between the two inner planes 8521 of the positioning hole 852. A recessed slot 312 is provided on the outer peripheral wall of the end of the rotating shaft 31 for the blocks 8522 to be removably engaged. The coordination between the blocks 8522 and the slot 312 can improve assembly and disassembly efficiency.

[0079] In this embodiment, one end of the spring piece 86 connected to the first connecting piece 87 can be bent to form a connecting portion 861, and the spring piece 86 is fixed to the first connecting piece 87 by the connecting portion 861. The connecting portion 861 can increase the elastic force of the spring piece 86 when it is deformed and reset under stress, thereby improving the durability of the spring piece 86.

[0080] The end of the rotating shaft 31 of the driving wheel 3 extends outward from the housing 1, and the protrusion 85 is mounted thereon. The spring piece 86, the first connecting piece 87, and the second connecting piece 88 can all be mounted outside the housing 1, providing ample space for the spring piece 86 to move. The first connecting piece 87 and the second connecting piece 88 can both be L-shaped and removably secured to a metal base 90 mounted outside the housing 1 via screws 89, thereby facilitating the connection of wires between the metal base 90 and the first connecting piece 87 or the second connecting piece 88.

[0081] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, equivalent changes and modifications that do not depart from the principles of the present invention are still within the scope of protection of the present invention.

[0082] In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

Claims

1. A marine wiper, characterized in that: It includes a motor, a driving wheel, an adjustment plate, a connecting rod mechanism, a rotating shaft, a wiper arm and a control assembly; The motor is used to drive the driving wheel to rotate, and the adjustment plate is installed on one side of the driving wheel; One end of the adjustment plate is hinged to the side of the driving wheel, and the other end is provided with two spaced arc grooves, which are concentric with the hinged end of the adjustment plate. The two arc grooves and the hinged end of the adjustment plate are distributed in a triangular shape, and a locking screw for movably locking the adjustment plate to the side of the driving wheel is provided in the arc groove; the adjustment plate is provided with an eccentric shaft, which can change the distance from the center of the driving wheel as the adjustment plate rotates on the driving wheel; The connecting rod mechanism includes a connecting rod and a rocker rod, one end of the connecting rod and the rocker rod are hingedly connected to each other, the other end of the connecting rod is hingedly connected to the eccentric shaft, and the other end of the rocker rod is connected to the rotating shaft; The rotation of the driving wheel drives the adjustment plate to rotate synchronously, and the eccentric shaft of the adjustment plate drives the connecting rod to rotate eccentrically, and then the rotating shaft rotates through the swing rod, and the rotation of the rotating shaft drives the wiper arm to swing; The control assembly includes a mounting plate, a switching switch, three conductive springs and a conductive disc; the switching switch is mounted on the mounting plate; the conductive disc is coaxially mounted on the other side of the drive wheel, and the other side of the drive wheel is made of insulating material; the conductive disc has three radially connected annular areas, which are divided into an inner annular area, a middle annular area and an outer annular area, and the inner and outer annular areas each have a notch, and the two notches are symmetrically distributed along the axis of the conductive disc; the three conductive springs are divided into inner springs and inner springs arranged side by side in sequence with inner and outer spacing. , middle spring piece and outer spring piece, one end of each conductive spring piece is installed on the mounting plate, and the middle spring piece is used to be directly connected to the external circuit, and the switching switch is used to control the inner spring piece and the outer spring piece to be connected to the external circuit; the other ends of the inner spring piece, the middle spring piece and the outer spring piece are independently slid and abutted against the inner ring area, the middle ring area and the outer ring area of the conductive disc, and in the initial state, one of the inner spring piece or the outer spring piece abuts against the position of the corresponding ring area close to one end of the notch; the external circuit is used to control the operation of the wiper motor.

2. A marine wiper according to claim 1, characterized in that: A hinge hole for a rotating screw to pass through is provided at the hinge end of the adjustment plate, and the rotating screw is locked and connected to the driving wheel; the adjustment plate can be rotated with the rotating screw as the axis.

3. A marine wiper according to claim 1, characterized in that: It also includes a shell mainly composed of a lower shell, a waterproof sealing ring and an upper cover; the lower shell has a shell space, the top of the shell space is open, the upper cover is detachably installed at the opening, and the waterproof sealing ring is sealed between the upper cover and the lower shell; the driving wheel, the adjustment plate and the connecting rod mechanism are all installed in the shell space, the driving wheel is rotatably installed in the shell space, the motor is installed on one side of the lower shell and is connected to the driving wheel; one end of the rotating shaft is rotatably placed in the shell space, and the other end extends out of the shell space and is connected to the wiper arm.

4. A marine wiper according to claim 3, characterized in that: The driving wheel is a worm wheel; the motor is connected to the worm wheel through a worm; a rotating shaft is provided at the bottom of the driving wheel, the rotating shaft is rotatably installed in a rotating shaft groove provided in the lower shell, and a spring gasket is also provided between the bottom of the rotating shaft and the bottom of the rotating shaft groove.

5. The marine wiper according to claim 1, characterized in that: The driving wheel is a worm gear; the motor is connected to the worm gear through a worm; the worm gear and the worm gear are meshed with each other and are both rotatably installed in the shell space of the shell; the motor is installed in the motor shell so as to be movable forward and backward, and the worm gear is installed in the shell space so as to be movable forward and backward; ball bearings are respectively provided at the front and rear ends of the motor, and the outer periphery of the ball bearings is fixed to the motor shell; the front end of the motor is directly connected to one end of the worm gear, and an adjustment hole is provided on the motor shell at the rear of the motor, an adjustment screw is passed through the adjustment hole, a ball is provided between the adjustment screw and the rear end of the motor, and a recessed hole is provided at the rear end of the motor for partially embedding the ball.

6. The marine wiper according to claim 1, characterized in that: The eccentric shaft is integrally formed and protrudes from the adjustment plate; a rocker connecting shaft is integrally formed and protrudes from one end of the rocker; through holes are respectively provided at both ends of the connecting rod for the eccentric shaft and the rocker connecting shaft to pass through, and the parts of the eccentric shaft and the rocker connecting shaft passing through the through holes are limited by retaining springs at both ends of the connecting rod.

7. A marine wiper, characterized in that: It includes a motor, a driving wheel, an adjustment plate, a connecting rod mechanism, a rotating shaft, a wiper arm and a control assembly; The motor is used to drive the driving wheel to rotate, and the adjustment plate is installed on one side of the driving wheel; One end of the adjustment plate is hinged to the side of the driving wheel, and the other end is provided with two spaced arc grooves, which are concentric with the hinged end of the adjustment plate. The two arc grooves and the hinged end of the adjustment plate are distributed in a triangular shape, and a locking screw for movably locking the adjustment plate to the side of the driving wheel is provided in the arc groove; the adjustment plate is provided with an eccentric shaft, which can change the distance from the center of the driving wheel as the adjustment plate rotates on the driving wheel; The connecting rod mechanism includes a connecting rod and a rocker rod, one end of the connecting rod and the rocker rod are hingedly connected to each other, the other end of the connecting rod is hingedly connected to the eccentric shaft, and the other end of the rocker rod is connected to the rotating shaft; The rotation of the driving wheel drives the adjustment plate to rotate synchronously, and the eccentric shaft of the adjustment plate drives the connecting rod to rotate eccentrically, and then the rotating shaft rotates through the swing rod, and the rotation of the rotating shaft drives the wiper arm to swing; The control assembly includes a protrusion, a spring piece, a first connecting piece, and a second connecting piece; the protrusion is synchronously rotated and mounted on the end of the rotating shaft at the center of the driving wheel, and the protrusion is cam-shaped and has a radially protruding convex portion; the spring piece is arranged on one side of the end of the rotating shaft, one end of the spring piece is connected and fixed to the first connecting piece, and the other end of the spring piece is movably contacted with the second connecting piece; When the convex portion of the protrusion presses against the spring sheet as the shaft rotates, the spring sheet is compressed and deformed, causing the other end to move away from the second connecting piece, and disconnecting the electrical connection between the first connecting piece and the second connecting piece; and when the convex portion of the protrusion moves away from the spring sheet, the other end of the spring sheet is reset and abuts against the second connecting piece, so that the first connecting piece and the second connecting piece are electrically connected; the first connecting piece and the second connecting piece are both connected to an external circuit; the external circuit is used to control the operation of the wiper motor.

8. The marine wiper according to claim 7, characterized in that: The convex block is detachably mounted on the end of the rotating shaft; before the driving wheel rotates, the connecting line between the convex portion of the convex block and the axis of the rotating shaft is perpendicular to the elastic sheet, and the convex portion is arranged to abut against or away from the elastic sheet.

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