CN206968611U - Screen wiper - Google Patents
Screen wiper Download PDFInfo
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- CN206968611U CN206968611U CN201720566120.7U CN201720566120U CN206968611U CN 206968611 U CN206968611 U CN 206968611U CN 201720566120 U CN201720566120 U CN 201720566120U CN 206968611 U CN206968611 U CN 206968611U
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- wiper
- radial magnet
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Abstract
Vehicle-mounted wiper field is the utility model is related to, discloses a kind of screen wiper, intelligent control is realized to wiper.The utility model includes motor, motor reduction gearbox, automatically controlled circuit board, reluctive transducer and radial magnet, and electric machine built-in has brush holder, and automatically controlled circuit board is provided with MCU and H bridge metal-oxide-semiconductor groups;Wherein, the car body controller of MCU and automobile is connected, and MCU is also connected with reluctive transducer, H bridge metal-oxide-semiconductor groups respectively, H bridge metal-oxide-semiconductor groups and motor connection;The deceleration that radial magnet is arranged on motor reduction gearbox increases the center for turning round gear, and reluctive transducer is arranged on the top of radial magnet.The utility model is applied to automobile.
Description
Technical field
It the utility model is related to vehicle-mounted wiper field, more particularly to screen wiper.
Background technology
Existing vehicle-mounted wiper, is traditional wiper assembly, windscreen wiper assembly by rain shaving electrical machine, mechanical linkage structure, scrape
Arm wiper forms;There are two groups of brushes in rain shaving electrical machine on brush holder, be respectively used to top gear and low or first gear, top gear and low or first gear are real
It is now by being supplied to the different voltage of rain shaving electrical machine, rain shaving electrical machine operates in one direction, is realized by mechanical linkage structure
The rotating of scraping arm wiper;No matter top gear, or low or first gear, rain shaving electrical machine is all using fixed voltage system, when running into
The operating mode of external complex, it is such as dry scrape, it is half-dried scrape, in the case of the different external drags of windage when, windscreen wiper wiping velocities can be by not
With the influence of degree, now the off-position angle of windscreen wiper, commutation angle, wiper frequency can be affected;Simultaneously as rain shaving electrical machine without
Which kind of gear identical voltage system is used by, using full speed before starting and commutating, so scraping arm wiper is in front windshield
Caused noise is also relatively large on glass, and very big program have impact on the comfortableness of driver's cabin;Traditional wiper assembly is simultaneously free of
There is any ECU, all controls realize that such as high low speed gear switch, intermittent time is controlled by BCM (i.e. car body controller)
System etc., significantly increase BCM complexity, another convenience, because rain shaving electrical machine is without speed-regulating function, so to windscreen wiper electricity
The uniformity of machine has high requirement;Traditional windscreen wiper assembly employs the mechanical structure of complexity, on the one hand takes larger installation
Space, also can be on the other hand strict challenge to service life.
Utility model content
The technical problems to be solved in the utility model is:A kind of screen wiper is provided, intelligent control is realized to wiper.
To solve the above problems, the technical solution adopted in the utility model is:Screen wiper, including motor, motor subtract
Fast case, automatically controlled circuit board, reluctive transducer and radial magnet, electric machine built-in have brush holder, automatically controlled circuit board be provided with MCU and
H bridge metal-oxide-semiconductor groups;Wherein, the car body controller of MCU and automobile connect, and MCU also respectively with reluctive transducer, H bridge metal-oxide-semiconductors
Group connection, H bridge metal-oxide-semiconductor groups and motor connection;The deceleration that radial magnet is arranged on motor reduction gearbox increases the center for turning round gear, magnetic resistance
Formula sensor is arranged on the top of radial magnet.
Further, one group of brush is provided with the brush holder.
Specifically, the automatically controlled circuit board is arranged on the cover plate of motor reduction gearbox.
Specifically, the reluctive transducer is arranged at the surface 3-5mm of radial magnet.
The beneficial effects of the utility model are:By setting automatically controlled circuit board, reluctive transducer and radial magnet, utilize
Radial magnet and reluctive transducer collect windscreen wiper angle, velocity information, and pass to automatically controlled circuit board, and automatically controlled circuit board is on the one hand
The windscreen wiper gear information of BCM outputs can be received, while is calculated in real time with pid algorithm, controls H bridge metal-oxide-semiconductors group real by pwm signal
The size and polarity of terminal voltage are now controlled, electric machine speed regulation and commutation is realized, meets the use need of various operating mode difference external drags
Ask;Before startup and commutation, slow down again by the mode of pwm signal is gentle to motor slow acceleration, reduce electric motor starting and change
To impact, reduce noise.
Also, due to having lacked one group of brush on brush holder, thus have more spaces be used for arrange be used for EMC functions electric capacity,
Inductance element, lift EMC performances.
Brief description of the drawings
Fig. 1 is motor assembly schematic diagram of the present utility model.
Marked in figure:Motor cover plate -1, H bridge metal-oxide-semiconductor group -2, slow down and increase skew gear -3, motor reduction gearbox -4, MCU-5,
Automatically controlled circuit board -6, reluctive transducer -7, radial magnet -8, metal clamps -9, brush holder -10, motor stator -11.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and detailed description.
Embodiment provides a kind of motor assembly of screen wiper, as shown in Figure 1:Brush holder 10 is placed in motor stator 11
Portion, motor stator 11 and the bolt of motor reduction gearbox 4, which combine, to be fixed, and the center of gear 3 is turned round in increasing of slowing down radial magnet 8, and reluctance type passes
Sensor 7 is arranged at the surface 3-5mm of radial magnet 8, and increasing of slowing down is turned round gear 3 and is fixed in motor reduction gearbox 4, automatically controlled circuit
Control unit MCU5, H bridge metal-oxide-semiconductor group 2 is designed with plate 6, automatically controlled circuit board 6 passes through the strong point on motor cover plate 1, positioning
Hole, fixation clamp precise positioning are fixedly mounted, and motor cover plate 1 is fixed on motor reduction gearbox 4 by multiple metal clamps 9, more
Point uniform pressure is fixed, and has silica gel ring, excellent sealing waterproof among motor cover plate 1 and motor reduction gearbox 4.
Only have one group of brush on the brush holder 10 of embodiment, you can complete the speed governing and commutation of motor, while the motor have it is excellent
Good rotating characteristic, is easy to speed regulating control;There is radial magnet 8 center of decelerating through motor helical gear 3, for being sensed to reluctance type
Device 7 provides windscreen wiper angle, velocity information;Motor internal has an automatically controlled circuit board 6, on the one hand the MCU5 on automatically controlled circuit board 6 can connect
The windscreen wiper gear information of BCM outputs is received, while MCU5 is calculated in real time with pid algorithm, and H bridge metal-oxide-semiconductors group 2 is controlled by pwm signal
The size and polarity of control terminal voltage are realized, electric machine speed regulation and commutation is realized, meets the use of various operating mode difference external drags
Demand;Before startup and commutation, slow down again by the mode of pwm signal is gentle to motor slow acceleration, reduce electric motor starting and
The impact of commutation, reduce noise;Motor cover plate and reduction box are installed using metal clamps Multipoint Uniform pressure, and with silica gel ring,
Excellent sealing is prevented into water.
Intelligent control method is as follows:
1st, MCU5 obtains the windscreen wiper gear information of BCM outputs, such as high low or first gear, interval shelves, cleaning mould by bus mode
Formula etc..
2nd, MCU5 output pwm signals control H bridge metal-oxide-semiconductors group 2, is slowly increased PWM duty cycle, motor is slowly started, subtract
It is small to start impact and noise.
3rd, reluctive transducer 7 is carried by the radial magnet 8 installed in the center of decelerating through motor increasing skew gear 3 to MCU5
For the angle information and velocity information of rain shaving electrical machine.
4th, MCU5, by pid algorithm, calculates subsequent time rain according to the angle and velocity information of reluctive transducer 7
Motor terminal voltage size and polarity are scraped, by PWM mode, control H bridge metal-oxide-semiconductors group 2, realizes the speed regulation to motor, direction
Regulation, has real-time, overcomes resistance, ensures off-position, commutation angular accuracy, ensures wiper frequency.
5th, MCU5 before being commutated in the range of wiper, controls H bridge metal-oxide-semiconductors group 2, to electricity according to angle information again by PWM
Machine slowly slows down, and reduces motor commutation impact and noise.To this accomplishes the half period of wiper, be then return to step 1 after
It is continuous to perform next cycle, realize that wiper scrapes water cleaning function.
General principle of the present utility model and main feature are the foregoing described, the description of specification simply illustrates this practicality
New principle, on the premise of the spirit and scope of the utility model is not departed from, the utility model also has various change and changed
Enter, these changes and improvements are both fallen within claimed the scope of the utility model.
Claims (4)
1. screen wiper, including motor and motor reduction gearbox, electric machine built-in have brush holder, it is characterised in that also including electrical control lines
Road plate, reluctive transducer and radial magnet, automatically controlled circuit board is provided with MCU and H bridge metal-oxide-semiconductor groups;Wherein, MCU and automobile
Car body controller connection, and MCU also be connected with reluctive transducer, H bridge metal-oxide-semiconductor groups respectively, H bridge metal-oxide-semiconductor groups and motor company
Connect;The deceleration that radial magnet is arranged on motor reduction gearbox increases the center for turning round gear, and reluctive transducer is arranged on radial magnet
Top.
2. screen wiper as claimed in claim 1, it is characterised in that one group of brush is provided with the brush holder.
3. screen wiper as claimed in claim 2, it is characterised in that the automatically controlled circuit board is arranged on motor reduction gearbox
On cover plate.
4. screen wiper as claimed in claim 2, it is characterised in that the reluctive transducer is being arranged on radial magnet just
At the 3-5mm of top.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720566120.7U CN206968611U (en) | 2017-05-19 | 2017-05-19 | Screen wiper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720566120.7U CN206968611U (en) | 2017-05-19 | 2017-05-19 | Screen wiper |
Publications (1)
Publication Number | Publication Date |
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CN206968611U true CN206968611U (en) | 2018-02-06 |
Family
ID=61409813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201720566120.7U Active CN206968611U (en) | 2017-05-19 | 2017-05-19 | Screen wiper |
Country Status (1)
Country | Link |
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CN (1) | CN206968611U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108692653A (en) * | 2018-05-21 | 2018-10-23 | 成都华川电装有限责任公司 | Portable rotating gyration, rotating speed and angular acceleration measuring instrument and measuring system |
CN113489243A (en) * | 2021-07-01 | 2021-10-08 | 浙江开拓电器股份有限公司 | Axial two-pole equally-divided magnet hidden type automobile wiper motor assembly and control method thereof |
-
2017
- 2017-05-19 CN CN201720566120.7U patent/CN206968611U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108692653A (en) * | 2018-05-21 | 2018-10-23 | 成都华川电装有限责任公司 | Portable rotating gyration, rotating speed and angular acceleration measuring instrument and measuring system |
CN113489243A (en) * | 2021-07-01 | 2021-10-08 | 浙江开拓电器股份有限公司 | Axial two-pole equally-divided magnet hidden type automobile wiper motor assembly and control method thereof |
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