CN110386109A - Wiper driver and Wiper assembly - Google Patents

Wiper driver and Wiper assembly Download PDF

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Publication number
CN110386109A
CN110386109A CN201810348289.4A CN201810348289A CN110386109A CN 110386109 A CN110386109 A CN 110386109A CN 201810348289 A CN201810348289 A CN 201810348289A CN 110386109 A CN110386109 A CN 110386109A
Authority
CN
China
Prior art keywords
wiper
axis
rheostat
motor
variable resistance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810348289.4A
Other languages
Chinese (zh)
Inventor
周盼
赵湛智
王凯
秦宗练
徐鹏
陈国珠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Automotive Products Changsha Co Ltd
Original Assignee
Bosch Automotive Products Changsha Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bosch Automotive Products Changsha Co Ltd filed Critical Bosch Automotive Products Changsha Co Ltd
Priority to CN201810348289.4A priority Critical patent/CN110386109A/en
Publication of CN110386109A publication Critical patent/CN110386109A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00Cleaning of vehicles
    • B60S1/02Cleaning windscreens, windows or optical devices
    • B60S1/04Wipers or the like, e.g. scrapers
    • B60S1/06Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08Wipers or the like, e.g. scrapers characterised by the drive electrically driven

Abstract

The present invention relates to a kind of Wiper assemblies, wherein the Wiper assembly includes: motor, exports rotary motion by rotor in the case where input electric power, and rotor connection transmission mechanism to export the rotary motion for increasing torque by axis;Rheostat links with shaft mechanical and is electrically connected with motor, and rheostatic resistance is periodically changed with the rotation of axis, so that the input voltage of motor be periodically changed;Wherein, during axis often rotates a circle, input voltage includes low ebb once or twice.Wiper assembly of the invention has many advantages, such as that structure is simple, installation is reliable, easy to maintain.

Description

Wiper driver and Wiper assembly
Technical field
The present invention relates to electromechanical driving structure fields, and more specifically, are related to a kind of wiper driver, can Periodically variable input voltage is provided for mechanical motor.Water is scraped including above-mentioned wiper driver the invention further relates to a kind of Device assembly.
Background technique
It is known that being usually provided with motor in Vehicular wiper, typical motor includes mechanical motor (mechanical ) and electric motor (electric motor) motor.In the process of running, wiper usually moves back and forth on glass, And when wiper is located on different positions, desired motor output torque and wiper speed are different.Due to Motor output torque and wiper speed depend on the input voltage of motor, therefore it is desirable that input voltage can be according to not Same torque and speed requirement generates corresponding variation.
Electric motor usually has controller, and input electricity can be adjusted according to desired torque and speed requirement Pressure, to reduce the energy consumption of wiper and improve operational efficiency.However, can be in existing mechanical motor The device that input voltage is periodically adjusted in operation causes mechanical motor to need to consume more electric energy in use, reduces The operational efficiency of wiper.
In addition, for the wiper system with mechanical motor, it is desired when wiper motion direction changes Mistake scrape (over wiping) and be controlled effectively and minimize so that wiper is changing the direction of motion or stopping When position can be minimized with a distance from vehicle A column and/or air-inlet grille component.
It is therefore desired to provide a kind of new wiper driver and Wiper assembly, above-mentioned skill can be avoided Art defect simultaneously reaches desired technical effect.
Summary of the invention
It is an object of the present invention to provide a kind of wiper drivers, and can be periodically changed in operation Resistance and input voltage, to provide desired input voltage variation for mechanical motor.It is another object of the present invention to mention For a kind of Wiper assembly including above-mentioned wiper driver.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of wiper driver, comprising:
Motor, exports rotary motion by rotor in the case where input electric power, and rotor connection transmission mechanism comes defeated by axis Increase the rotary motion of torque out;
Rheostat links with shaft mechanical and is electrically connected with motor, and rheostatic resistance periodically changes with the rotation of axis Become, so that the input voltage of motor be periodically changed;
Wherein, during axis often rotates a circle, input voltage includes low ebb once or twice.
Optionally, between two low ebbs, the angle that axis turns over is not less than 170 degree.
Optionally, rheostat includes: single or multiple variable resistance pieces, and axis is relative to single or multiple variable resistance pieces revolvably cloth It sets;And sliding block, it is moved with axis and single or multiple variable resistance on pieces can be slidably arranged on.
It optionally, further include shell, wherein axis is configured to rotate relative to shell, and single or multiple variable resistance pieces are opposite It is fixed in shell.
Optionally, rheostat includes enclosing the first variable resistance piece and the second variable resistance piece with identical size arranged about the axis.
Optionally, transmission mechanism includes worm and worm wheel, wherein the rotor of motor drives worm screw, and worm and wheel Engagement, worm gear band movable slider.
Optionally, the protrusion with shoe contact is provided on worm gear, with band movable slider.
Optionally, rheostat by welding, anchor, be bonded, be bolted, screw connection is connected on shell.
Optionally, rheostat is slide rheostat, slider type rheostat or resistance membrane coat rheostat.
A kind of resistance adjustment device Wiper assembly, comprising:
Above-mentioned wiper driver;And
Wiper and windshield wiper blade, they are moved back and forth by axis by link mechanism drive, and when input voltage is positioned at low When at paddy, windshield wiper blade is located at commutation position and/or rest position.
The beneficial effects of the present invention are: wiper driver of the invention and Wiper assembly are simple with structure, pacify Fill the advantages that reliable, easy to maintain.It, can be in limited sky by using wiper driver of the invention and Wiper assembly It is interior to provide resistance adjustment ability for circuit system, and the operational efficiency of the wiper using mechanical motor is improved, reduce fortune Row cost reduced the appearance scraped and was minimized wiper at a distance from A column/air-inlet grille in extreme position.
Detailed description of the invention
The present invention is explained in further detail below with reference to attached drawing and preferred embodiment, but art technology Personnel it will be appreciated that, these attached drawings are drawn for the purpose for explaining preferred embodiment, and therefore should not be made For limitation of the scope of the invention.In addition, unless otherwise indicated, attached drawing is only intended to the group for conceptually indicating described object At or construction and may include that expansiveness show that and attached drawing is also not necessarily drawn to scale.
Fig. 1 is the three-dimensional view of one embodiment of wiper driver of the invention.
Fig. 2 is the three-dimensional view of embodiment illustrated in fig. 1, wherein worm gear has been installed in place.
Fig. 3 is the circuit diagram of embodiment illustrated in fig. 1.
Fig. 4 is the embodiment illustrated in fig. 1 coordinate diagram that resistance changes over time in operation.
Specific embodiment
Carry out detailed description of the present invention preferred embodiment below with reference to attached drawing.What those of skill in the art will be appreciated that It is that these descriptions are only descriptive, illustrative, and should not be interpreted as limiting protection scope of the present invention.
Firstly, it is necessary to explanation, the top that is previously mentioned herein, bottom, upward, towards inferior positional terms be opposite Come what is defined, they are opposite concepts in direction in each attached drawing, and therefore being capable of different positions according at it It sets and changes with different practical states.So restricted term should not be interpreted as these or other positional terms.
Furthermore, it should be further noted that for any single technical characteristic for describing or implying in the embodiments herein, or Any single technical characteristic for being shown in the accompanying drawings or implying still is able to continue between these technical characteristics (or its equivalent) It is combined, to obtain the other embodiment of the present invention not referred to directly herein.
It should be noted that in different drawings, identical reference label indicates same or about component.
The present invention provides a kind of wiper driver comprising:
Motor, exports rotary motion by rotor in the case where input electric power, and the rotor connects transmission mechanism to pass through Axis output increases the rotary motion of torque;
Rheostat links with shaft mechanical and is electrically connected with motor, and rheostatic resistance periodically changes with the rotation of axis Become, so that the input voltage of motor be periodically changed.In one embodiment of the invention, the process often to rotate a circle in axis In, input voltage includes low ebb once or twice.
In another embodiment of the present invention, between two low ebbs, the angle that axis turns over is not less than 170 degree.
Fig. 1 is the three-dimensional view of one embodiment of wiper driver of the invention.Wherein, wiper driver 100 Include: shell 110, has axis 111;Worm gear (not shown) is rotatably attached on axis 111;Rheostat 120, packet Include: one or more variable resistance pieces, they are fixed relative to shell 110 and arrange around axis 111, wherein the two of each variable resistance piece End respectively with same connector be electrically connected and sliding block 140, be configured to the rotation with worm gear and in one or more variable resistances It is slided on piece, wherein sliding block 140 and out splice going splice 123 are electrically connected.
In the illustrated embodiment, rheostat 120 includes the first variable resistance piece 131 and the second variable resistance piece 132, their both ends It is electrically connected respectively with the first connector 121 and the second connector 122.First connector 122a and the second connector 122b and input power Anode is electrically connected.In addition, sliding block 140 and out splice going splice 123 are electrically connected.
In one embodiment of the invention, protrusion is had on worm gear, and sliding block 140 is contacted with the protrusion.Snail Wheel construction is to be rotated centered on axis 111, and each variable resistance piece is arranged in the circular trace around 111 periphery of axis, and sliding block 140 are configured to slide along the circular trace in each variable resistance on piece.
Optionally, the protrusion on worm gear is column or other suitable structures.
Optionally, rheostat 120 can by welding, being anchored, be bonded, be bolted, screw connection or other suitable sides Formula is assembled on shell 110.
Optionally, it is attached with connector 130 on shell 110, is configured to be suitable for being inserted by power supply line.
The invention further relates to a kind of wipers comprising: according to wiper motor driver 100 noted hereinabove;Electricity Machine 170, output end are attached on worm screw 150, and worm screw 150 is set as driveably engaging with unshowned worm gear.
Fig. 2 is the three-dimensional view of embodiment illustrated in fig. 1, wherein worm gear 160 has been installed in place.As shown, worm gear 160 are set as being covered on rheostat 120 and with axis 111 for center of circle rotation.Be arranged on the periphery of worm gear 160 it is with teeth, and Adaptation is engaged with worm screw 150.Protrusion as described above is arranged in the unshowned one side of worm gear 160.
Optionally, worm gear 160 can be configured to counterclockwise or rotate clockwise.
Fig. 3 is the circuit diagram of embodiment illustrated in fig. 1.As shown, the anode of motor 170 electrically connects with out splice going splice 123 It connects, and the cathode of motor 170 and ground wire or power cathode are electrically connected.Sliding block 140 and out splice going splice 123 are electrically connected, and And can be mobile relative to the first variable resistance piece 131, the both ends of the first variable resistance piece 131 are passing through the first connector 121 and input power just Pole is electrically connected.
It is easily understood that being in clear purpose, the first variable resistance piece 131 is only shown in Fig. 3.However, actual electricity It further include the second variable resistance piece 132 arranged on the same circumference with the first variable resistance piece 131 in road, both ends pass through the second connector 122 are electrically connected with the positive of input power.
In addition, the other side of shell 110 of the axis 111 in Fig. 1,2 show is attached to link mechanism and is placed on the glass that keeps out the wind In wiper and windshield wiper blade on glass.Worm gear 160 is often rotated by 360 °, then link mechanism drives windshield wiper blade to complete in windshield On primary round-trip wiping.That is, link mechanism drives windshield wiper blade to transport since stop position when worm gear 160 starts rotation It is dynamic;When worm gear 160 has rotated 180 degree, link mechanism drives windshield wiper blade to reach the position nearest away from vehicle A column, at this point, scraping water Piece movement velocity is zero and the direction of motion changes;When worm gear 160 has rotated 360 degree, link mechanism drives windshield wiper blade Reach the commutation position closest to air-inlet grille component.
In an embodiment of the present invention, when input voltage is at a low ebb, when windshield wiper blade be located at least in it is nearest away from vehicle A column Position at or windshield wiper blade may be additionally located at closest at the commutation position of air-inlet grille component.When input voltage is at a low ebb, Windshield wiper blade may be additionally located at the rest position close to air-inlet grille component.
Optionally, link mechanism includes four-bar mechanism.
In use, motor 170 runs and drives worm screw 150 and worm gear 160, the protrusion band movable slider on worm gear 160 140 is mobile relative to the first variable resistance piece 131 or the second variable resistance piece 132.Although showing sliding block 140 in Fig. 3 to be located in variable resistance piece The position in portion, so it is easy to understand that as sliding block 140 carries out circular motion, sliding block 140 can be located at the first variable resistance piece 131 and the At any position on two variable resistance pieces 132, and after leaving the first variable resistance piece 131;It is connect immediately with the second variable resistance piece 132 It closes, is engaged immediately with the first variable resistance piece 131 after leaving the second variable resistance piece 132.In position shown in fig. 3, sliding block 140 Just beginning and variable resistance chip bonding will leave variable resistance piece.At this point, the access resistance of variable resistance piece is zero, the anode of motor 170 with Input power is directly connected to, and has maximum input voltage.When sliding variable resistance piece since the position of diagram into variable resistance piece When portion is mobile, the access resistance of variable resistance piece is increased rapidly, and reaches maximum when sliding block 140 is located in the middle part of variable resistance piece.Hereafter, Access resistance declines rapidly, and when sliding block 140 leaves variable resistance piece, and access resistance is reduced to zero.
In one embodiment of the invention, in assembling, the assembly of wiper driver 100 is so that when sliding block 140 When the middle part of one of variable resistance piece, windshield wiper blade is located at least in the rest position nearest away from vehicle A column.Therefore, the every rotation of worm gear The access resistance of variable resistance piece is maximum when 180 degree.When the direction of motion of windshield wiper blade will change or will stop, on motor 170 Voltage be located at low ebb, the output power of motor 170 also is located at low ebb, is driven so that being applied on link mechanism and windshield wiper blade Power is minimum, is conducive to link mechanism and windshield wiper blade changes the direction of motion or stopping.
Optionally, input power is D.C. regulated power supply.
Optionally, motor 170 is also electrically connected with the first signal source 31b, returns to stop position to receive instruction wiper Or the signal of initial position.
Optionally, motor 170 is also electrically connected with second signal source 53, to receive instruction wiper using high speed or low speed Gear is come the speed signal that runs.
Fig. 4 is the embodiment illustrated in fig. 1 coordinate diagram that resistance changes over time in operation.Wherein, abscissa is worm gear 160 Relative to the rotation angle of shell 110, ordinate is the value for the resistance that rheostat 120 accesses in circuit.
In use, motor 170 drives worm screw 150 to rotate, and the worm gear 160 of engagement is driven to rotate, on worm gear 160 not The protrusion shown pushes the variable resistance piece 121 on rheostat 120 to rotate, thus change the access resistance of rheostat 120 constantly, To change the input voltage of motor 170.
In the illustrated embodiment, rheostat 120 is with there are two variable resistance pieces.Therefore, the every rotation 180 degree of worm gear 160 will produce The period of change of raw access resistance.It is easily understood that if being disposed with N number of variable resistance piece, worm gear 160 around axis 111 Every rotation 360/N degree will generate the period of change of an access resistance.Those skilled in the art can be set according to actual needs The number of variable resistance piece, and using the variable resistance piece with different resistance values, and by changing from axis 111 to the biography of sliding block 140 Dynamic path (for example, setting gear drive or individual transmission shaft) accesses the period of change and axis 111 of resistance to adjust Relationship between rotation, to generate the period of change of desired access resistance.By the way that worm gear 160 and worm screw is selectively arranged The parameters such as 150 gear ratio can make when windshield wiper blade, which moves to, will change the direction of motion or stop, rheostat 120 It is maximum to access resistance, so that the input voltage of motor 170 be made to minimize.Therefore, the output of motor 170 minimizes, so that scraping water The speed of piece reduces and inertia reduces, and avoids that windshield wiper blade and vehicle A column or the collision of air-inlet grille component occurs.
In one embodiment of the invention, rheostat 120 is conventional slide rheostat or slider type rheostat.
In another embodiment of the present invention, rheostat 120 is resistance membrane coat, which may be provided at shell On body 110.
By using wiper driver of the invention and Wiper assembly, mechanical motor can according to different needs come Its speed and torque are adjusted, the efficiency of mechanical motor is improved, and obtains electric motor in a manner of low cost Function.Greatly reduce further, since being crossed caused by build-up tolerance, component wear and wiper inertia and scraping phenomenon, and therefore, scrapes The precision of the running operation angle of hydrophone will be enhanced.
In one embodiment of the invention, when the angle that axis 111 turns over is 180 degree, windshield wiper blade is moved to apart from vapour The commutation position of vehicle A column most nearby.The angular range that the windshield wiper blade of driver side has been rotated through is 75 to 90 degree, and passenger side The angular range that windshield wiper blade has been rotated through is 80 to 90 degree.By using wiper driver of the invention and Wiper assembly, Mechanical motor wiper can efficiently control and reduce wiper when the direction of motion changes or stops to vehicle A column and/or The distance between air-inlet grille to effectively improve the reliability of wiper, and has been reached with the mode of low cost and has been adopted With the control effect of the wiper of electric motor, product quality and competitiveness are improved.
The present invention is disclosed with reference to the accompanying drawings in this specification, and also those of skill in the art is enable to implement this hair It is bright, including manufacturing and using any device or system, selecting suitable material and using the method for any combination.Of the invention Range is limited by claimed technical solution, and includes other examples that those of skill in the art expect.If this Other examples of class include the structural detail or other such example packets for being not different from claimed technical solution literal language There is no the equivalent structural elements of essential distinction containing the literal language with claimed technical solution, then other such examples are answered When considereding to be in the protection scope determined by the present invention claimed technical solution.

Claims (10)

1. a kind of wiper driver (100) characterized by comprising
Motor (170), exports rotary motion by rotor in the case where input electric power, and the rotor connects transmission mechanism The rotary motion for increasing torque is exported by axis (111);
Rheostat (120) is electrically connected, the rheostat with the axis (111) mechanical linkage and with the motor (170) (120) resistance is periodically changed with the rotation of the axis (111), so that the motor (170) be periodically changed Input voltage;
Wherein, during the axis (111) often rotates a circle, the input voltage includes low ebb once or twice.
2. wiper driver according to claim 1, which is characterized in that between two low ebbs, the axis (111) turns The angle crossed is not less than 170 degree.
3. wiper driver according to claim 1, which is characterized in that the rheostat (120) includes: single or more A variable resistance piece, the axis (111) are revolvably arranged relative to the single or multiple variable resistance pieces;And sliding block (140), with The axis (111) moves and can be slidably arranged on the single or multiple variable resistance on pieces.
4. wiper driver according to claim 3, which is characterized in that further include shell (110), wherein the axis (111) it is configured to rotate relative to the shell (110), the single or multiple variable resistance pieces are relative to the shell (110) It is fixed.
5. wiper driver according to claim 3, which is characterized in that the rheostat (120) includes around described The the first variable resistance piece (131) and the second variable resistance piece (132) with identical size of axis (111) arrangement.
6. wiper driver according to claim 3, which is characterized in that the transmission mechanism include worm screw (150) and Worm gear (160), wherein the rotor of the motor (170) drives the worm screw (150), and the worm screw (150) and institute Worm gear (160) engagement is stated, the worm gear (160) drives the sliding block (140).
7. wiper driver according to claim 3, which is characterized in that be provided on the worm gear (160) with it is described The protrusion of sliding block (140) contact, to drive the sliding block (140).
8. wiper driver according to claim 4, which is characterized in that the rheostat (120) passes through welding, anchor It connects, be bonded, being bolted, screw connection is to be connected on the shell (110).
9. wiper driver according to claim 1, which is characterized in that the rheostat (120) be slide rheostat, Slider type rheostat or resistance membrane coat rheostat.
10. a kind of Wiper assembly characterized by comprising
Wiper driver according to claim 1 to 9;And
Wiper and windshield wiper blade, they are moved back and forth by the axis (111) by link mechanism drive, and when described defeated When entering voltage and being located at low ebb, the windshield wiper blade is located at commutation position and/or rest position.
CN201810348289.4A 2018-04-18 2018-04-18 Wiper driver and Wiper assembly Pending CN110386109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810348289.4A CN110386109A (en) 2018-04-18 2018-04-18 Wiper driver and Wiper assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810348289.4A CN110386109A (en) 2018-04-18 2018-04-18 Wiper driver and Wiper assembly

Publications (1)

Publication Number Publication Date
CN110386109A true CN110386109A (en) 2019-10-29

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Application Number Title Priority Date Filing Date
CN201810348289.4A Pending CN110386109A (en) 2018-04-18 2018-04-18 Wiper driver and Wiper assembly

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990009800U (en) * 1997-08-19 1999-03-15 추호석 Car Wiper Drive Control
US20120176073A1 (en) * 2011-01-07 2012-07-12 Mitsuba Corporation Wiper motor
CN204688013U (en) * 2015-06-15 2015-10-07 肖春莉 Windshield wiper for cars and Cigarette lighter control setup
CN105083224A (en) * 2014-04-30 2015-11-25 博世汽车部件(长沙)有限公司 Vehicle wiper gearbox and vehicle wiper drive system
CN205017174U (en) * 2015-09-22 2016-02-03 尼维尔天域科技有限公司 Novel motor
CN205601792U (en) * 2016-03-17 2016-09-28 博世汽车部件(长沙)有限公司 A motor and wiper system for wiper system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990009800U (en) * 1997-08-19 1999-03-15 추호석 Car Wiper Drive Control
US20120176073A1 (en) * 2011-01-07 2012-07-12 Mitsuba Corporation Wiper motor
CN105083224A (en) * 2014-04-30 2015-11-25 博世汽车部件(长沙)有限公司 Vehicle wiper gearbox and vehicle wiper drive system
CN204688013U (en) * 2015-06-15 2015-10-07 肖春莉 Windshield wiper for cars and Cigarette lighter control setup
CN205017174U (en) * 2015-09-22 2016-02-03 尼维尔天域科技有限公司 Novel motor
CN205601792U (en) * 2016-03-17 2016-09-28 博世汽车部件(长沙)有限公司 A motor and wiper system for wiper system

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