Windshield wiper motor and vehicle windshield wiper

Abstract

The windshield wiper motor comprises a motor body, a transmission mechanism and a control module, the transmission mechanism is composed of a transmission rod, a transmission gear and a planetary gear set, the motor body drives the transmission gear through the transmission rod, the transmission gear is meshed with the planetary gear set, and the planetary gear set is meshed with the transmission mechanism. An output shaft of the planetary gear set is connected with the windshield wiper arm; the control module is electrically connected with the motor main body and is integrated with an overload protection circuit and a PWM (Pulse Width Modulation) speed regulation unit; the inner wall of the motor body is provided with a waterproof sealing layer. The transmission device is high in transmission efficiency and low in noise and has a waterproof protection function.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, in particular to a windshield wiper motor and a vehicle windshield wiper. Background Art

[0002] The existing wiper motors generally have the following problems:

[0003] 1. The transmission mechanism adopts traditional gear sets, which are prone to noise after wear and have low transmission efficiency;

[0004] 2. The motor control module lacks overload protection, and long-term use can easily burn out the circuit;

[0005] 3. The waterproof performance is insufficient, and rainwater can easily penetrate and cause a short circuit.

[0006] Therefore, there is an urgent need for a wiper motor and a vehicle wiper with optimized structure, long service life and stable operation. Summary of the invention

[0007] In view of the above problems, the present invention provides a wiper motor and a vehicle wiper, which have high transmission efficiency, low noise and waterproof protection.

[0008] The technical solution of the present invention is as follows:

[0009] A wiper motor comprises a motor body, a transmission mechanism and a control module, wherein the transmission mechanism is composed of a transmission rod, a transmission gear and a planetary gear set, the motor body drives the transmission gear through the transmission rod, the transmission gear is meshed with the planetary gear set, and the output shaft of the planetary gear set is connected to the wiper arm; the control module is electrically connected to the motor body, and the control module is integrated with an overload protection circuit and a PWM speed regulation unit; the inner wall of the motor body is provided with a waterproof sealing layer.

[0010] In a further technical solution, the planetary gear set is made of a self-lubricating nylon composite material, and the meshing surface of the planetary gear set is provided with a spiral noise reduction pattern.

[0011] In a further technical solution, a labyrinth waterproof ring is provided at the end of the output shaft of the planetary gear set, and the labyrinth waterproof ring includes at least two layers of staggered rubber sealing rings.

[0012] In a further technical solution, the waterproof sealing layer is a polyurethane coating with a thickness of 0.5 mm-1.2 mm, and the waterproof sealing layer covers all non-connected surfaces of the inner wall of the motor body.

[0013] In a further technical solution, a potting glue layer is provided at the wire interface of the control module, and the potting glue layer covers the wire connection end and extends to 2mm-4mm outside the interface.

[0014] The present invention also provides a vehicle wiper, which is equipped with the above-mentioned wiper motor.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. Through the compound transmission of the transmission rod, transmission gear and planetary gear, the present invention can reduce noise and improve the torque output efficiency.

[0017] 2. The present invention designs overload protection and temperature monitoring, which can extend the service life of the motor.

[0018] 3. The present invention adopts a multi-layer waterproof design, which can improve the reliability of use in humid environments. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the wiper motor described in Embodiment 1 of the present invention;

[0020] Figure 2 is a schematic structural diagram of the transmission mechanism described in Embodiment 1 of the present invention.

[0021] Description of the Reference Numerals:

[0022] 10. Motor main body; 21. Transmission rod; 22. Transmission gear; 23. Planetary gear set; 30. Wiper arm. Detailed Embodiments

[0023] The embodiments of the present invention will be further described below with reference to the drawings.

[0024] Embodiment 1:

[0025] A wiper motor, as Figure 1 - Figure 2 shown, includes a motor main body 10, a transmission mechanism and a control module. The transmission mechanism is composed of a transmission rod 21, a transmission gear 22 and a planetary gear set 23. The motor main body 10 drives the transmission gear 22 through the transmission rod 21. The transmission gear 22 meshes with the planetary gear set 23. The output shaft of the planetary gear set 23 is connected to the wiper arm 30. The control module is electrically connected to the motor main body 10. The control module is integrated with an overload protection circuit and a PWM speed regulation unit. A waterproof sealing layer is provided on the inner wall of the motor main body 10.

[0026] In another embodiment, the planetary gear set 23 is made of a self-lubricating nylon composite material, and spiral noise reduction patterns are provided on the meshing surface of the planetary gear set 23.

[0027] In another embodiment, a labyrinth waterproof ring is provided at the end of the output shaft of the planetary gear set 23. The labyrinth waterproof ring includes at least two layers of rubber sealing rings distributed in a staggered manner.

[0028] In another embodiment, the waterproof sealing layer is a polyurethane coating with a thickness of 0.5 mm - 1.2 mm, and the waterproof sealing layer covers all non-connection surfaces on the inner wall of the motor body 10.

[0029] In another embodiment, a potting glue layer is provided at the wire interface of the control module, and the potting glue layer covers the wire connection end and extends 2 mm - 4 mm outside the interface.

[0030] Embodiment 2:

[0031] A vehicle windshield wiper is assembled with the windshield wiper motor described in the above embodiment.

[0032] The above embodiments only represent the specific implementation manners of the present invention, and the descriptions are relatively specific and detailed. However, it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A windshield wiper motor, characterized in that, It includes a motor body, a transmission mechanism and a control module. The transmission mechanism is composed of a transmission rod, a transmission gear and a planetary gear set. The motor body drives the transmission gear through the transmission rod. The transmission gear is meshed with the planetary gear set. The output shaft of the planetary gear set is connected to the wiper arm. The control module is electrically connected to the motor body. The control module is integrated with an overload protection circuit and a PWM speed regulation unit. The inner wall of the motor body is provided with a waterproof sealing layer.

2. The wiper motor according to claim 1, characterized in that, The planetary gear set is made of self-lubricating nylon composite material, and the meshing surface of the planetary gear set is provided with spiral noise reduction patterns.

3. The windshield wiper motor according to claim 1, characterized in that, A labyrinth waterproof ring is provided at the end of the output shaft of the planetary gear set, and the labyrinth waterproof ring includes at least two layers of staggered rubber sealing rings.

4. The windshield wiper motor according to claim 1, characterized in that, The waterproof sealing layer is a polyurethane coating with a thickness of 0.5 mm to 1.2 mm. The waterproof sealing layer covers all non-connected surfaces of the inner wall of the motor body.

5. The wiper motor according to claim 1, characterized in that, A potting glue layer is provided at the wire interface of the control module, and the potting glue layer covers the wire connection end and extends to 2mm-4mm outside the interface.

6. A vehicle wiper, characterized in that, Equipped with a wiper motor as claimed in any one of claims 1 to 5.

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