Windscreen wiper capable of outputting any scraping angle

Abstract

The utility model relates to a windscreen wiper capable of outputting any scraping angle, relates to the technical field of windscreen wipers, and aims to solve the problem that a traditional windscreen wiper structure cannot rotate at a large angle. The windscreen wiper comprises a shell, a built-in cavity is formed in the shell, an output shaft is arranged outside the shell and penetrates into the built-in cavity of the shell, and the output shaft is connected with the built-in cavity of the shell. A built-in cavity is formed in the output shaft, the output shaft is rotationally connected into the built-in cavity, a transmission gear, a duplicate gear and a transition gear are arranged in the built-in cavity, the output shaft is sleeved with the transmission gear, the duplicate gear and the transition gear are rotationally connected into the built-in cavity, and the transition gear is arranged between the transmission gear and the duplicate gear. The transmission gear is meshed with the transition gear, the duplicate gear is provided with a large tooth and a small tooth, the small tooth is a straight gear, the small tooth of the duplicate gear is meshed with the transition gear, and a speed reducing mechanism used for driving the duplicate gear is arranged on the shell. The windscreen wiper can meet the scraping requirement of any rotating angle of the windscreen wiper.

Description

Technical Field

[0001] The present application relates to the technical field of windshield wipers, and in particular to a windshield wiper capable of outputting any scraping angle. Background Art

[0002] As an indispensable component of a car, the wiper's main function is to remove water stains, snow particles and dust from the windshield through the reciprocating motion of the wiper arm in adverse weather conditions such as rainy or snowy days, ensuring the driver's clear vision and improving driving safety. Traditional wiper systems generally use a connecting rod transmission mechanism to achieve the swing of the wiper arm. This design has been widely used in the automotive industry due to its simple structure and easy maintenance. However, with the continuous advancement of automotive technology and consumers' increasing requirements for driving experience, the limitations of traditional wipers in scraping angles have gradually become apparent.

[0003] In related technologies, (such as Figure 1 As shown in FIG2 , the maximum scraping angle of a wiper driven by a conventional connecting rod transmission mechanism is often limited to about 110 degrees during the scraping process. This limitation can meet basic cleaning needs in most cases. In order to break through this angle limitation, the prior art attempts to add a gear structure (such as Figure 2 However, although this improvement scheme improves the scraping range to a certain extent, it also increases the complexity of design and assembly and increases the manufacturing cost. Therefore, designing a wiper that can achieve arbitrary scraping angle adjustment while maintaining a simple structure and low manufacturing cost has become a problem that needs to be solved urgently. Utility Model Content

[0004] In order to solve the problem that the traditional wiper structure cannot meet the requirements of large rotation angles, the present application provides a wiper that can output any wiping angle.

[0005] The present application provides a wiper capable of outputting any scraping angle, which adopts the following technical solution:

[0006] A wiper that can output any wiping angle, including a shell, a built-in chamber is provided in the shell, an output shaft is provided on the outside of the shell, the output shaft passes through the built-in chamber of the shell, and the output shaft is rotatably connected in the built-in chamber, a transmission gear, a double gear and a transition gear are provided in the built-in chamber, the transmission gear is sleeved on the output shaft, the double gear and the transition gear are both rotatably connected in the built-in chamber, the transition gear is arranged between the transmission gear and the double gear, the transmission gear is meshed with the transition gear, the double gear has large teeth and small teeth, the small teeth are spur gears, the small teeth of the double gear are meshed with the transition gear, and a reduction mechanism for driving the double gear is provided on the shell.

[0007] By adopting the above technical solution, including a shell, a built-in chamber is formed in the shell, the output shaft is rotatably installed in the built-in chamber of the shell, and the transmission gear, the double gear and the transition gear are installed in the built-in chamber; when the wiper is required to wipe the water, the reduction mechanism is started, and the power output by the reduction mechanism is directly transmitted to the large tooth part of the double gear, the double gear starts to rotate, and the small teeth (spur gears) of the double gear are meshed with the transition gear. The rotation of the transition gear further drives the transmission gear meshed with it, so when the transmission gear rotates, it will drive the output shaft to rotate together, and the other end of the output shaft is connected to the wiper arm As the output shaft rotates, the wiper arm begins to move on the windshield according to a predetermined trajectory to perform wiping operations; through the settings of transmission gears, transition gears and double gears, effective transmission and conversion of power are achieved, and the rotation angle of the output shaft can be accurately controlled, which means that the wiper arm can move on the windshield according to any predetermined trajectory to meet the scraping requirements of any rotation angle of the wiper, thereby realizing cleaning operations at any scraping angle. At the same time, the gear transmission structure has high transmission effect, simple assembly structure, low manufacturing cost, and can ensure the efficiency and stability of power during the transmission process.

[0008] Optionally, the number of teeth on the transmission gear is greater than the number of teeth on the duplex gear pinion.

[0009] By adopting the above technical solution, the number of teeth of the transmission gear is greater than the number of teeth of the duplex gear pinion; through the setting of the gear ratio, the gear ratio (i.e. the ratio of the number of teeth of the transmission gear to the number of teeth of the duplex gear pinion) determines the reduction ratio of the transmission system. Since the number of teeth of the transmission gear is greater than the number of teeth of the duplex gear pinion, the speed will decrease, but the torque will increase. The greater the reduction ratio, the greater the speed reduction, and the greater the torque amplification factor.

[0010] Optionally, two positioning rods for installing the double gear and the transition gear are rotatably provided in the built-in chamber, and the double gear and the transition gear are respectively connected to the corresponding positioning rods.

[0011] By adopting the above technical solution, the double gear and the transition gear are installed in the built-in chamber through the positioning rod; through the setting of the positioning rod, the positioning rod provides a precise installation position for the double gear and the transition gear, ensuring their stability and accuracy during the transmission process.

[0012] Optionally, the reduction mechanism includes a worm and an electric motor, the large teeth in the double gear are worm gear teeth, the worm is engaged with the large teeth of the double gear, the worm is connected to the motor shaft of the electric motor, and the electric motor is arranged on the housing.

[0013] By adopting the above technical solution, the reduction mechanism includes a worm and an electric motor; when the reduction mechanism is started, the electric motor works, and the rotation of the motor shaft drives the worm to rotate together, and its rotation transmits power to the large teeth of the double gear meshing with it; through the setting of the worm and the electric motor, through the spiral shape of the worm and the tooth shape of the worm gear teeth, a significant reduction in the rotation speed is achieved. This deceleration effect enables the transmission system to adapt to different working requirements. At the same time, the reducer structure is compactly designed, and can achieve efficient transmission in a limited space.

[0014] Optionally, a shell cover for sealing is provided on the shell, and the shell cover is arranged at the open end of the built-in chamber of the shell.

[0015] By adopting the above technical solution, the shell cover is installed at the open end of the built-in chamber of the shell; through the setting of the shell cover, the main function of the shell cover is to close the open end of the shell, thereby protecting the components and mechanisms in the built-in chamber from the influence of the external environment, which helps to extend the service life of the equipment and maintain its normal working condition.

[0016] Optionally, the shell is provided with a plurality of assembly parts for installation, and the plurality of assembly parts are arranged on the shell in sequence, and the shell cover is penetrated by a plurality of connection holes that cooperate with the assembly parts.

[0017] By adopting the above technical solution, the assembly part is integrally formed on the shell, and the connecting hole is opened on the shell cover; during installation, the shell cover is placed on the shell, the connecting hole is aligned with the assembly part, a fastener (such as a bolt) is inserted into the connecting hole, and the fastener is fixed to the assembly part by rotating the nut or tightening tool; the setting of the assembly part and the connecting hole helps to achieve a fastening connection between the shell cover and the shell, enhances the stability of the overall structure, and facilitates disassembly and assembly.

[0018] Optionally, a magnet is provided at the upper end of the output shaft, a PCB board is provided on the shell cover, a Hall sensor chip is provided on the PCB board, and the center position of the magnet corresponds to the Hall sensor chip on the PCB board.

[0019] By adopting the above technical solution, the magnet is installed on the output shaft, the PCB board is installed on one side of the shell cover, and the Hall sensor chip is installed on the PCB board; when the motor drives the output shaft to rotate, the magnet on the upper end also rotates, and the Hall sensor chip installed on the PCB board will read the rotation angle of the magnet, and can also monitor and control the rotation position of the output shaft in real time; through the setting of the magnet, PCB board and Hall sensor chip, it is helpful to realize the control of the motor rotation time and direction, combined with the real-time monitoring of the Hall sensor chip, it is easy to realize the wiper's scraping, resetting, climbing, reversing, acceleration and deceleration and other functions, meeting the needs of different usage scenarios.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] Through the arrangement of transmission gears, transition gears and double gears, effective power transmission and conversion are achieved, and the rotation angle of the output shaft can be precisely controlled. This means that the wiper arm can move along any predetermined trajectory on the windshield, thereby achieving cleaning operations at any scraping angle. At the same time, the gear transmission structure has a high transmission effect, a simple assembly structure, and a low manufacturing cost, which can ensure the efficiency and stability of power transmission.

[0022] Through the arrangement of the worm and the motor, the helical shape of the worm and the tooth profile of the worm gear, a significant reduction in speed is achieved. This deceleration effect enables the transmission system to adapt to different working requirements. At the same time, the reducer structure is compact and can achieve efficient transmission in a limited space.

[0023] The setting of magnets, PCB boards and Hall sensing chips can help to control the rotation time and direction of the motor. Combined with the real-time monitoring of the Hall sensing chip, it can easily realize the wiper's scraping, resetting, climbing, reversing, acceleration and deceleration and other functions, meeting the needs of different usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of a conventional rod transmission mechanism driving a wiper in the prior art.

[0025] Figure 2 This is a schematic diagram of the structure of a wiper that increases the scraping angle in the prior art.

[0026] Figure 3 This is a schematic diagram of the exploded structure of a wiper that can output any scraping angle in an embodiment of the present application.

[0027] Figure 4 It is a structural schematic diagram used to reflect the internal structure of the shell in the embodiment of the present application.

[0028] Figure 5 This is a cross-sectional view used to illustrate the position of the magnet and the Hall sensor chip in the embodiment of the present application.

[0029] Explanation of the accompanying drawings: 1. Shell; 2. Built-in chamber; 3. Output shaft; 4. Transmission gear; 5. Double gear; 51. Large tooth; 52. Small tooth; 6. Transition gear; 7. Speed ​​reduction mechanism; 71. Worm; 72. Motor; 8. Positioning rod; 9. Shell cover; 10. Assembly part; 11. Connection hole; 12. Magnet; 13. PCB board; 14. Hall sensor chip. DETAILED DESCRIPTION

[0030] The following is combined with Figure 3-5This application is described in further detail.

[0031] The embodiment of the present application discloses a wiper that can output any scraping angle. Figure 3 The wiper that can output any wiping angle includes a shell 1, and a built-in chamber 2 is integrally formed in the shell 1. In this embodiment, the built-in chamber 2 is used to accommodate the wiper transmission components. An output shaft 3 is installed on the outside of the shell 1, and the output shaft 3 passes through the built-in chamber 2 of the shell 1. In this embodiment, the output shaft 3 is used to connect the wiper arm, and the output shaft 3 is rotatably installed in the built-in chamber 2 of the shell 1.

[0032] Reference Figure 3 and Figure 4 A transmission gear 4, a duplex gear 5 and a transition gear 6 are installed in the built-in chamber 2 of the shell 1. The transmission gear 4 is fixed on the output shaft 3. Two positioning rods 8 are rotatably installed in the built-in chamber 2 of the shell 1. In this embodiment, the two positioning rods 8 correspond to the transition gear 6 and the duplex gear 5 respectively. The transition gear 6 and the duplex gear 5 are respectively sleeved and fixed on the corresponding positioning rods 8; the positioning rods 8 provide a precise installation position for the duplex gear 5 and the transition gear 6, ensuring their stability and accuracy during the transmission process.

[0033] Reference Figure 3 In this embodiment, the transition gear 6 is installed between the transmission gear 4 and the duplex gear 5. The transmission gear 4 is meshed with the transition gear 6. At the same time, the duplex gear 5 has large teeth 51 and small teeth 52. The large teeth 51 of the duplex gear 5 are worm gear teeth, and the small teeth 52 of the duplex gear 5 are spur gears. The small teeth 52 of the duplex gear 5 are meshed with the transition gear 6.

[0034] Reference Figure 3 At the same time, the number of teeth of the transmission gear 4 is greater than the number of teeth of the small teeth 52 of the duplex gear 5. The gear ratio (i.e., the ratio of the number of teeth of the transmission gear 4 to the number of teeth of the small teeth 52 of the duplex gear 5) determines the reduction ratio of the transmission system. Since the number of teeth of the transmission gear 4 is greater than the number of teeth of the small teeth 52 of the duplex gear 5, the speed will decrease, but the torque will increase. The greater the reduction ratio, the greater the speed reduction, and the greater the torque amplification multiple.

[0035] Reference Figure 3A reduction mechanism 7 is installed in the built-in chamber 2 of the housing 1. In this embodiment, the reduction mechanism 7 is used to drive the double gear 5 to move. The reduction mechanism 7 includes a worm 71 and a motor 72. The motor 72 is installed outside the housing 1, and the motor shaft of the motor 72 extends into the built-in chamber 2. The worm 71 is fixedly connected to the motor shaft of the motor 72, and the worm 71 is meshed with the large teeth 51 (worm gear teeth) of the double gear 5; the spiral shape of the worm 71 and the tooth shape of the worm gear teeth achieve a significant reduction in speed. This deceleration effect enables the transmission system to adapt to different working requirements. At the same time, the reducer structure is compactly designed and can achieve efficient transmission in a limited space.

[0036] Reference Figure 3 A shell cover 9 is installed on one side of the shell 1. The shell cover 9 is located at the open end of the built-in chamber 2 of the shell 1. Several assembly parts 10 are integrally formed on the shell 1. Several assembly parts 10 are sequentially formed on the shell 1. Several connecting holes 11 are opened through the shell cover 9. The number of the connecting holes 11 is consistent with the number of the assembly parts 10. During installation, the shell cover 9 is placed on the shell 1 so that the connecting holes 11 are aligned with the assembly parts 10, and fasteners (such as bolts) are inserted into the connecting holes 11. The fasteners are fixed to the assembly parts 10 by rotating nuts or tightening tools, which helps to achieve a fastening connection between the shell cover 9 and the shell 1, enhances the stability of the overall structure, and is easy to assemble and disassemble.

[0037] Reference Figure 3 and Figure 5 , a magnet 12 is installed on the upper end of the output shaft 3. At the same time, in this embodiment, the installation position of the magnet 12 can be changed. The magnet 12 can also be installed on the positioning rod 8 of the transition gear 6 or the double gear 5; a PCB board 13 is installed on the shell cover 9, and a Hall sensing chip 14 is installed on the PCB board 13. The center position of the magnet 12 corresponds to the Hall sensing chip 14 on the PCB board 13. In this embodiment, the rotation angle is sensed by the Hall chip 14, and the rotation angle and forward and reverse switching of the output shaft 3 are controlled by the ECU on the PCB board 13; when the motor 72 drives the output shaft 3 to rotate, the magnet 12 at the upper end also rotates, and the Hall sensing chip 14 installed on the PCB board 13 will read the rotation angle of the magnet 12, and the rotation position of the output shaft 3 can be monitored and controlled in real time. By controlling the rotation time and direction of the motor and combining the real-time monitoring of the Hall sensing chip 14, the wiper can easily realize multiple functions such as scraping, resetting, climbing, reversing, acceleration and deceleration, meeting the needs of different usage scenarios.

[0038] The implementation principle of a wiper capable of outputting any wiping angle according to an embodiment of the present application is as follows: when the wiper is required to wipe the water, the reduction mechanism 7 is started, the motor 72 is operated, and the rotation of the motor shaft of the motor 72 drives the worm 71 to rotate together, and its rotation transmits power to the large tooth 51 of the double gear 5 meshing with it, and the double gear 5 starts to rotate, and the small tooth 52 (spur gear) of the double gear 5 meshes with the transition gear 6. The rotation of the transition gear 6 further drives the transmission gear 4 meshing with it, so when the transmission gear 4 rotates, it drives the output shaft 3 to rotate together, and the other end of the output shaft 3 is connected to the wiper arm. As the output shaft 3 rotates, the wiper arm starts to move on the windshield according to a predetermined trajectory. During the wiping operation, as the output shaft 3 rotates, the magnet 12 at the upper end also rotates, and the Hall sensor chip 14 installed on the PCB board 13 will read the rotation angle of the magnet 12, and can also monitor and control the rotation position of the output shaft 3 in real time; through the settings of the transmission gear 4, the transition gear 6 and the double gear 5, the effective transmission and conversion of power is realized, and the rotation angle of the output shaft 3 can be accurately controlled, which means that the wiper arm can move on the windshield according to any predetermined trajectory, thereby realizing cleaning operations at any scraping angle. At the same time, the gear transmission structure has a high transmission effect, a simple assembly structure, and a low manufacturing cost, which can ensure the efficiency and stability of power during the transmission process.

[0039] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A wiper capable of outputting any scraping angle, characterized in that: The invention comprises a housing (1), wherein a built-in chamber (2) is provided in the housing (1), an output shaft (3) is provided outside the housing (1), the output shaft (3) penetrates into the built-in chamber (2) of the housing (1), and the output shaft (3) is rotatably connected in the built-in chamber (2), and a transmission gear (4), a double gear (5) and a transition gear (6) are provided in the built-in chamber (2), the transmission gear (4) is sleeved on the output shaft (3), the double gear (5) and the transition gear (6) are both rotatably connected in the built-in chamber (2), the transition gear (6) is arranged between the transmission gear (4) and the double gear (5), the transmission gear (4) and the transition gear (6) are meshed, the double gear (5) has a large tooth (51) and a small tooth (52), the small tooth (52) is a spur gear, the small tooth (52) of the double gear (5) is meshed with the transition gear (6), and the housing (1) is provided with a speed reduction mechanism (7) for driving the double gear (5).

2. A wiper capable of outputting any scraping angle according to claim 1, characterized in that: The number of teeth of the transmission gear (4) is greater than the number of teeth of the small teeth (52) of the duplex gear (5).

3. The wiper capable of outputting any scraping angle according to claim 1, characterized in that: Two positioning rods (8) for mounting a double gear (5) and a transition gear (6) are rotatably provided in the built-in chamber (2); the double gear (5) and the transition gear (6) are respectively connected to corresponding positioning rods (8).

4. A wiper capable of outputting any scraping angle according to claim 3, characterized in that: The speed reduction mechanism (7) comprises a worm (71) and an electric motor (72); the large teeth (51) in the double gear (5) are worm gear teeth; the worm (71) is meshed with the large teeth (51) of the double gear (5); the worm (71) is connected to the motor shaft of the electric motor (72); and the electric motor (72) is arranged on the housing (1).

5. The wiper capable of outputting any scraping angle according to claim 1, characterized in that: The housing (1) is provided with a housing cover (9) for sealing, and the housing cover (9) is arranged at the open end of the built-in chamber (2) of the housing (1).

6. The wiper capable of outputting any scraping angle according to claim 5, characterized in that: The housing (1) is provided with a plurality of assembly parts (10) for installation, and the plurality of assembly parts (10) are sequentially arranged on the housing (1). The housing cover (9) is provided with a plurality of connection holes (11) that cooperate with the assembly parts (10).

7. The wiper capable of outputting any scraping angle according to claim 5, characterized in that: A magnet (12) is provided at the upper end of the output shaft (3), a PCB board (13) is provided on the shell cover (9), a Hall sensor chip (14) is provided on the PCB board (13), and the center position of the magnet (12) corresponds to the Hall sensor chip (14) on the PCB board (13).

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