Motor structure capable of realizing speed reduction and reversing of windscreen wiper system

Abstract

The utility model discloses a motor structure capable of achieving speed reduction and reversing of a windscreen wiper system, and relates to the technical field of windscreen wipers. The problem that in the prior art, the flanging noise of a windscreen wiper is large is solved. Comprising a windscreen wiper and a driving mechanism, the driving mechanism comprises a motor and a turbine which are in transmission connection, the motor and a vehicle-mounted storage battery form a windscreen wiper loop, the turbine is provided with a reset plate, the reset plate is provided with at least one notch, and a resistor is connected in series in the windscreen wiper loop and connected with the reset plate in parallel through a wire. The connecting ends of the wire and the reset plate are a first contact and a second contact, when the windscreen wiper is located at the initial position and the high position, the first contact is located at the notch and disconnected with the reset plate, and when the windscreen wiper is located between the initial position and the high position, the first contact makes contact with the reset plate, and the second contact makes contact with the reset plate. The motor structure capable of achieving speed reduction and reversing of the windscreen wiper system is used for an automobile windscreen wiper, the cost can be low, noise generated by rotating and flanging in the working process of the windscreen wiper can be reduced, and the comfort of a driver and passengers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of windshield wipers, in particular to a motor structure capable of realizing deceleration and reversing of a windshield wiper system. Background Art

[0002] The main function of the wiper is to scrape off raindrops and dust attached to the vehicle's windshield, so as to improve the driver's visibility and keep the windshield clear, allowing the driver to drive more safely and increasing driving safety.

[0003] When the current wiper is working, the friction between it and the windshield generates noise, especially when it turns to turn the edge, which makes the passengers in the car feel abrupt and harsh, reduces the comfort of the passengers, and seriously affects the experience of the passengers in the car. The existing solution is to use smart wipers, which reduce the input voltage of the motor through chip control to reduce the speed of the wiper edge, thereby reducing the noise generated by the edge. This method requires integrated chips, which have complex structures, high production and use costs, and low versatility, which is not conducive to later replacement and has high maintenance and replacement costs. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a motor structure that can realize deceleration and reversing of the wiper system, which can reduce the noise generated by the steering flange during the operation of the wiper at a low cost and improve the comfort of the driver and passengers.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model discloses a motor structure capable of realizing deceleration and reversing of a wiper system, comprising a wiper and a driving mechanism for driving the wiper to rotate, the driving mechanism comprising a motor and a turbine in transmission connection, the motor and a vehicle-mounted battery forming a wiper circuit, the turbine being provided with a synchronously rotating reset plate, the reset plate being provided with at least one notch, a resistor being connected in series in the wiper circuit, the resistor being connected in parallel with the reset plate through a wire, the connecting ends of the wire and the reset plate being a first contact and a second contact, when the wiper is located at an initial position and a high position, the first contact being located at the notch position and disconnected from the reset plate, and when the wiper is between the initial position and the high position, the first contact being in contact with the reset plate, and the second contact being in contact with the reset plate.

[0007] Furthermore, the notch is arranged along the edge of the reset plate.

[0008] Furthermore, the reset plate is circular in shape, and the opening size of the notch is 1 / 10-1 / 5 of the circumference of the reset plate.

[0009] Furthermore, the resistor is a fixed-value resistor, and the resistance of the fixed-value resistor is R, 0<R<3Ω.

[0010] Furthermore, the number of the notches is two, and the two notches are oppositely opened at the edge of the reset plate.

[0011] Furthermore, the first contact and the second contact are both coated with a conductive grease layer.

[0012] The beneficial effects of the utility model are as follows: a motor structure capable of realizing deceleration and reversing of a wiper system is applied, a resistor is connected in series in the wiper circuit, when the wiper is in the initial position and the high position, that is, when it needs to turn to the flange, the first contact is located at the notch position and disconnected from the reset plate, the first contact and the second contact are disconnected, and the current flows through the resistor, the resistor generates a voltage divider, the voltage actually received by the motor is reduced, and is lower than the voltage of the vehicle battery, the speed of the motor is reduced, the wiper decelerates and turns smoothly when turning, the impact between the wiper and the glass during the turning flange of the wiper is reduced, the noise generated by the turning flange of the wiper is reduced, and the service life of the wiper is increased; after the wiper decelerates and turns to the flange, the wiper is between the initial position and the high position, the first contact and the second contact are in contact and connected with the reset plate, the resistor is short-circuited, the current does not pass through the resistor, the resistor does not generate a voltage divider, the voltage actually received by the motor remains unchanged, and is almost equal to the voltage of the vehicle battery, and the speed of the motor returns to a normal speed. By connecting and short-circuiting the resistor in the wiper circuit, the resistance value of the resistor is fixed, and the voltage of the motor in the wiper circuit is precisely divided and regulated to reduce and restore the voltage flowing through the motor, thereby slowing down the motor and restoring the normal speed, reducing the noise generated by the steering flanging during the wiper operation, and improving the comfort of the driver and passengers. By connecting a resistor in series with a notched reset plate in the wiper circuit, the noise generated by the steering flanging during the wiper operation can be reduced, avoiding the use of high-cost chip control, with a simple structure, lower use cost, and more convenient replacement and maintenance, greatly reducing the use and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 The utility model is a mechanical and electrical principle diagram of a reset plate of a motor structure capable of realizing deceleration and reversing of a wiper system, wherein a first contact point having a notch contacts the reset plate;

[0015] Figure 2The embodiment is an electromechanical principle diagram of a reset plate of a motor structure capable of realizing deceleration and reversing of a wiper system, wherein a first contact having a notch is disconnected from the reset plate;

[0016] Figure 3 The embodiment is a mechanical and electrical principle diagram of a reset plate of a motor structure capable of realizing deceleration and reversing of a wiper system, wherein a first contact point having two notches contacts the reset plate;

[0017] Figure 4 The present invention is an electromechanical principle diagram of an embodiment of a motor structure capable of realizing deceleration and reversing of a wiper system, in which a reset plate has two notches and a first contact point is disconnected from the reset plate.

[0018] Reference numerals: reset plate 1 , notch 101 , second contact 2 , first contact 3 , resistor 4 , reset notch 5 . DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, this embodiment provides a motor structure capable of realizing deceleration and reversing of a wiper system, including a wiper and a driving mechanism for driving the wiper to rotate, the driving mechanism including a motor M and a turbine connected in a transmission manner, the motor M and the vehicle-mounted battery E forming a wiper circuit, the turbine being provided with a synchronously rotating reset plate 1, the reset plate 1 being provided with at least one notch 101, a resistor 4 being connected in series in the wiper circuit, the resistor 4 being connected in parallel with the reset plate 1 through a wire, the connection end of the wire and the reset plate 1 being a first contact 3 and a second contact 2, when the wiper is in the initial position and the high position, the first contact 3 is located at the notch 101 and disconnects from the reset plate 1, when the wiper is between the initial position and the high position, the first contact 3 is in contact with the reset plate 1, and the second contact 2 is in contact with the reset plate 1. Wherein, the resistor 4 is a fixed value resistor or a sliding variable resistor. The notch 101 is provided along the edge of the reset plate 1 or an arc-shaped long hole is provided on the reset plate 1. The motor M, the vehicle battery E, the wire, and the switch K1 form a low-speed wiper circuit, and the motor M, the vehicle battery E, the wire, and the switch K2 form a high-speed wiper circuit. The reset plate 1 is glued to the end face of the turbine or welded to the end face of the turbine or fixed to the end face of the turbine by a buckle clamping method using metal AB, and ensures that the first contact 3 and the notch 101 transition smoothly during the rotation process. In order to facilitate disassembly and installation, the reset plate 1 is fixed to the end face of the turbine by a buckle clamping method, and a bayonet is provided in the middle of the reset plate 1 to tightly clamp the end face convex part of the turbine. The output shaft of the motor M is fixedly connected to the worm rod, and the worm rod is connected to the turbine gear transmission. The turbine drives the reset plate 1 to rotate synchronously, and the turbine drives the four-bar linkage to control the wiper to rotate and wipe the windshield. The reset plate 1 can be reset to the initial position by transmitting a reset signal S to the body controller. The first contact 3 is located at the notch 101 and disconnects from the reset plate 1. The reset plate 1 has a reset notch 5. The reset end of the reset signal line passes through the reset notch 5 and transmits the reset signal S to the body controller to achieve reset.

[0022] A motor structure based on the above structure that can realize deceleration and reversing of a wiper system is used for a car wiper. A resistor is connected in series in the wiper circuit. When the wiper is at the initial position and the high position, that is, when it needs to turn to the flange, the first contact 3 is located at the notch 101 and disconnected from the reset plate 1, the first contact 3 and the second contact 2 are disconnected, and the current flows through the resistor 4. The resistor 4 generates a voltage divider, and the voltage actually received by the motor M is reduced, which is lower than the voltage of the vehicle battery E. The speed of the motor M decreases, and the wiper decelerates and smoothly turns when turning, reducing the impact between the wiper and the glass when the wiper turns to the flange, reducing the noise generated by the wiper turning to the flange, and increasing the service life of the wiper; after the wiper decelerates and turns to the flange, the wiper is between the initial position and the high position, the first contact 3 and the second contact 2 are in contact and connected with the reset plate 1, the resistor 4 is short-circuited, the current does not pass through the resistor 4, the resistor 4 does not generate a voltage divider, the voltage actually received by the motor M remains unchanged, and is almost equal to the voltage of the vehicle battery E, and the speed of the motor M returns to a normal speed. By connecting and short-circuiting the resistor 4 in the wiper circuit, and the resistance value of the resistor 4 is fixed, the voltage of the motor M in the wiper circuit is precisely divided and regulated, the voltage flowing through the motor M is reduced and restored, so that the motor M is decelerated and restored to normal speed, the noise generated by the turning edge during the operation of the wiper is reduced, and the comfort of the driver and passengers is improved. By connecting a resistor in series with the reset plate 1 with a notch 101 in the wiper circuit, the noise generated by the turning edge during the operation of the wiper is reduced, and the use of high-cost chip control is avoided. The structure is simple, the use cost is lower, and the replacement and maintenance are more convenient, which greatly reduces the use and maintenance costs. The control method of the motor structure that can realize the deceleration and reversing of the wiper system can also be used in other occasions where the motor speed needs to be accurately adjusted.

[0023] Specifically, the notch 101 is arranged along the edge of the reset plate 1 .

[0024] A notch 101 is cut directly along the edge of the reset plate 1 , and the reset plate 1 is attached to the end face of the turbine. The reset plate 1 and the end face of the turbine are better matched and installed to ensure a smooth transition of the first contact 3 at the notch 101 .

[0025] The reset plate 1 is circular in shape, and the opening size of the notch 101 is 1 / 10-1 / 5 of the circumference of the reset plate 1 .

[0026] By changing the opening size of the notch 101, such as 1 / 10, 1 / 9, 1 / 8, 1 / 7, 1 / 6, 1 / 5 of the circumferential arc length of the reset plate 1, the deceleration time of the motor M is changed to better adapt to the wiper flanging and reduce noise. The larger the opening, the longer the deceleration time of the motor M. By changing the position of the notch 101, the timing of the flanging is changed to better adapt to the wiper flanging.

[0027] Preferably, the resistor 4 is a fixed-value resistor, and the resistance of the fixed-value resistor is R, 0<R<3Ω.

[0028] The fixed resistor has a stable resistance value, shares the stable voltage and current in the wiper circuit, effectively maintains the stable operation of the wiper circuit, the motor M decelerates stably, and the wiper turns smoothly and stably, further reducing noise. The resistance value of the fixed resistor is R, and the resistance value R of the resistor can be specifically set according to the actual speed reduction needs, 0<R<3Ω, such as 1Ω, 1.5Ω, 2Ω, 2.5Ω, etc. The resistance value R of the resistor 4 can be specifically selected and adjusted according to the actual vehicle noise reduction needs to accurately control the speed reduction range of the motor.

[0029] As an implementation method, the number of the notches 101 is two, and the two notches 101 are oppositely opened on the edge of the reset plate 1 .

[0030] The two notches 101 are relatively symmetrically arranged on the edge of the reset plate 1 , so as to better change the timing of the flanging and better adapt to the flanging of the wiper, thereby reducing the flanging noise of the wiper.

[0031] Preferably, the first contact 3 and the second contact 2 are both coated with a conductive grease layer.

[0032] The first contact 3 and the second contact 2 are both coated with a conductive grease layer. Furthermore, the contact surface between the reset plate 1 and the first contact 3 and the second contact 2 is coated with a conductive grease layer to ensure smooth sliding of the first contact 3, the second contact 2 and the reset plate 1. Conductive grease can reduce contact resistance, improve contact stability and conduction performance, prevent static electricity accumulation, better conduct current, reduce friction and wear, increase service life, and improve the reliability, durability and performance of the equipment. Conductive grease is evenly coated on the contact parts of the first contact 3, the second contact 2 and the reset plate 1 to ensure good contact performance.

[0033] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention.

Claims

1. A motor structure capable of realizing deceleration and reversing of a wiper system, comprising a wiper and a driving mechanism for driving the wiper to rotate, wherein the driving mechanism comprises a motor and a turbine in transmission connection, wherein the motor and a vehicle-mounted battery form a wiper circuit, wherein: The turbine is provided with a synchronously rotating reset plate (1), the reset plate (1) is provided with at least one notch (101), a resistor (4) is connected in series in the wiper circuit, the resistor (4) is connected in parallel with the reset plate (1) via a wire, the connection ends of the wire and the reset plate (1) are a first contact (3) and a second contact (2), when the wiper is located at an initial position and a high position, the first contact (3) is located at the notch (101) and is disconnected from the reset plate (1), when the wiper is between the initial position and the high position, the first contact (3) is in contact with the reset plate (1), and the second contact (2) remains in contact with the reset plate (1).

2. The motor structure capable of realizing deceleration and reversing of a wiper system according to claim 1, characterized in that: The notch (101) is arranged along the edge of the reset plate (1).

3. The motor structure capable of realizing deceleration and reversing of a wiper system according to claim 2, characterized in that: The reset plate (1) is circular in shape, and the opening size of the notch (101) is 1 / 10-1 / 5 of the circumference of the reset plate (1).

4. The motor structure capable of realizing deceleration and reversing of a wiper system according to claim 1, characterized in that: The resistor (4) is a fixed-value resistor, the resistance of which is R, 0<R<3Ω.

5. The motor structure capable of realizing deceleration and reversing of a wiper system according to claim 1, characterized in that: The number of the notches (101) is two, and the two notches (101) are arranged opposite to each other on the edge of the reset plate (1).

6. The motor structure capable of realizing deceleration and reversing of a wiper system according to claim 1, characterized in that: The first contact (3) and the second contact (2) are both coated with a conductive grease layer.

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