CN112281406B - A washing machine and a sliding potentiometer monitoring circuit - Google Patents
A washing machine and a sliding potentiometer monitoring circuit Download PDFInfo
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- CN112281406B CN112281406B CN202011187374.0A CN202011187374A CN112281406B CN 112281406 B CN112281406 B CN 112281406B CN 202011187374 A CN202011187374 A CN 202011187374A CN 112281406 B CN112281406 B CN 112281406B
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- deflector rod
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/08—Control circuits or arrangements thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
本发明涉及洗衣机技术领域，公开了一种洗衣机及滑动电位器监测电路，所述洗衣机包括：箱体，所述箱体内设置有离合器，且所述离合器连接有拨杆；外桶，所述外桶设置于所述箱体中；内桶，所述内桶设置于所述外桶中；还包括：牵引器，设置于所述箱体中，用于牵引所述拨杆以切换所述洗衣机的工作状态，所述牵引器包括：滑动电位器监测电路，用于实时监测所述牵引器用于确定牵引所述拨杆移动的距离，进而实现所述牵引器的牵引长度可控、牵引精度高、结构简单可靠。
The invention relates to the technical field of washing machines, and discloses a washing machine and a sliding potentiometer monitoring circuit. The washing machine comprises: a box body, a clutch is arranged in the box body, and the clutch is connected to a lever; an outer barrel, the outer barrel is arranged in the box body; an inner barrel, the inner barrel is arranged in the outer barrel; and further comprises: a tractor, arranged in the box body, and used for pulling the lever to switch the working state of the washing machine. The tractor comprises: a sliding potentiometer monitoring circuit, which is used for real-time monitoring of the tractor and for determining the distance of pulling the lever, thereby realizing that the traction length of the tractor is controllable, the traction accuracy is high, and the structure is simple and reliable.
Description
Technical Field
The invention relates to the technical field of washing machines, in particular to a washing machine and a sliding potentiometer monitoring circuit.
Background
The washing machine is a cleaning electric appliance for washing clothes by utilizing the mechanical action of electric energy, more and more people use the washing machine to wash large articles such as clothes, bedclothes and the like, time and labor are saved, and the washing machine is becoming an indispensable household electric appliance in people's life. Among them, the retractor is an important component for switching the operating state of the washing machine.
The existing general tractor is characterized in that 1, a single-stroke tractor is single in stroke, the electrified tension is kept, the instant tension of power failure disappears, the traction is cancelled, the small motor and the transmission gear move in a matched mode, the novel three-stroke tractor is the most basic tractor, the application range is single, 2, a contact type multi-stroke tractor is provided with a plurality of traction strokes, the plurality of input ends respectively control the plurality of strokes, the electrified tension is kept, the instant tension of power failure disappears, the traction is cancelled, the small motor, the transmission gear and the plurality of contacts are arranged in the novel three-stroke tractor, the current traction stroke is judged through the contacts, the number of input ends influenced by the strokes is large, the more complicated structure of the input ends is, the reliability is poor, the traction force disappears when the power is cut off, the novel three-stroke tractor is fast returned to an initial position, the novel three-stroke tractor is not suitable for certain situations needing slow return, and is a double-stroke tractor, 3, a cam type multi-stroke tractor is provided with a plurality of traction strokes, the traction position is judged through the traction time when the zero crossing detection is used for detecting the initial position, the traction speed is large, the traction speed is influenced by the traction load, the traction speed is slow when the traction speed is large, and the traction error is not influenced when the traction speed is large, and the traction error is not large when the traction speed is detected when the load is large, and the traction error is large.
Disclosure of Invention
In some embodiments of the application, a washing machine and a sliding potentiometer monitoring circuit are provided, the washing machine comprises a box body, an outer barrel, an inner barrel and a tractor, the tractor is used for switching the working state of the washing machine, and the tractor comprises the sliding potentiometer monitoring circuit, so that the traction distance is controllable, and a traction mechanism is simple.
In some embodiments of the application, a sliding potentiometer monitoring circuit is additionally arranged, a cam structure is additionally arranged in the tractor, the cam drives a load (a deflector rod) to traction and move when rotating, meanwhile, the cam structure drives a sliding sheet to move on the sliding potentiometer, the traction distance is converted into the sliding sheet moving distance, the position on the sliding potentiometer is changed when the sliding sheet moves on the sliding potentiometer, the resistance value of the sliding potentiometer is also changed, the traction distance is converted into a resistance value, and the purpose of detecting the traction distance in real time is achieved by detecting the output resistance value of an output end to a controller.
In some embodiments of the present application, the working form of the retractor is improved, the controller is connected to the traction motor to control the traction motor to draw the shift lever to move, and when the traction motor stops rotating, the traction motor is controlled to maintain a position where the traction motor stops rotating.
In some embodiments of the present application, the washing machine further includes a fixed carrier coupled to the tub, and a middle portion of the lever is rotatably coupled to the fixed carrier to define a position of the lever.
In some embodiments of the present application, a clutch in a washing machine includes a connection sleeve, a toggle end of the lever being abutted against the connection sleeve to convert traction power of the lever into movement power of the connection sleeve.
In some embodiments of the present application, the traction device pulls the traction end of the deflector rod to limit the deflector rod to rotate around the connection part of the deflector rod and the fixed carrier, and the pulling end of the deflector rod compresses the connecting sleeve to move from the transmission position to the locking position so as to switch the washing machine from the dewatering state to the washing state.
In some embodiments of the application, the tractor comprises a shell and a traction wheel, wherein the shell is connected to the bottom of the outer barrel so as to be provided with a traction motor, the traction wheel and a transmission piece, the traction wheel is provided with a traction shaft, the traction shaft is connected with a traction rope, the traction rope is connected to the deflector rod, the traction wheel is rotationally arranged on the shell so as to pull the deflector rod to move, the traction motor is arranged on the shell, a motor shaft of the traction motor penetrates into the shell, the traction motor is used for providing traction torque for the tractor, and the transmission piece is arranged between the traction wheel and the traction motor so as to transmit the output torque of the traction motor to the traction wheel.
In some embodiments of the present application, a sliding potentiometer monitoring circuit is further provided, which is applied to the above-mentioned washing machine, and the sliding potentiometer monitoring circuit is used for monitoring the moving distance of the driving lever drawn by the tractor in real time.
In some embodiments of the application, the sliding potentiometer monitoring circuit comprises a cam, a sliding potentiometer, a sliding vane and a detection output end, wherein the cam is connected to the traction wheel so as to enable the cam and the traction wheel to synchronously rotate, the sliding potentiometer is arranged on the shell, one end of the sliding vane is slidingly arranged on the sliding potentiometer so as to change the resistance value of the sliding potentiometer, the other end of the sliding vane is propped against the cam, and the detection output end is electrically connected with the sliding potentiometer so as to output the resistance value variation of the sliding potentiometer.
In some embodiments of the application, the distance from each point on the profile of the cam to the center of rotation of the cam is different.
In some embodiments of the present application, the rotating cam contacts the sliding vane to move to different positions of the sliding potentiometer, so as to convert the moving distance of the shift lever into the resistance variable quantity of the sliding point device.
In some embodiments of the application, the traction motor and the detection output end are both connected to the controller, the controller is used for determining the resistance change of the sliding potentiometer in real time, the controller is used for controlling the rotating angle of the motor shaft of the motor, and the controller is configured to control the traction motor to keep a position for stopping rotating when the traction motor stops rotating.
Drawings
Fig. 1 is a schematic view illustrating a structure of a washing machine according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating an internal structure of a washing machine according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2 in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of the motor, reducer and clutch configuration of an embodiment of the invention;
FIG. 5 is a cross-sectional view of FIG. 4 in accordance with an embodiment of the present invention;
FIG. 6 is a top view of an outer tub in an embodiment of the invention;
FIG. 7 is a schematic view of a retractor in accordance with an embodiment of the present invention;
FIG. 8 is a schematic diagram of a sliding potentiometer monitor circuit according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a cam according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a cam according to an embodiment of the present invention.
In the drawing the view of the figure,
100. The device comprises a box body, 110 parts of an outer barrel, 120 parts of an inner barrel, 130 parts of a fixed carrier, 140 parts of a clutch, 150 parts of a deflector rod;
200. Tractor 210, shell 220, traction motor 221, motor shaft 230, traction wheel 231, traction shaft 240, transmission piece 241, first transmission shaft 242, second transmission shaft 243, motor gear 244, first transmission gear 245, second transmission gear 246, cam 247, sliding potentiometer 248, sliding sheet 249, detection output end;
300. the clutch, 310, locking sleeve, 320, connecting sleeve;
400. 410, a rotating part, 420, a fixing part;
500. A dewatering shaft, 510, a dewatering input shaft, 520, a dewatering output shaft, 530, a connecting cylinder;
600. Washing shaft, 610, washing input shaft, 620, washing output shaft;
710. sun gear, 720, planet gears, 730 and planet carrier.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first", "second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, "a plurality of" means two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or in communication with each other between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 and 2, there is provided a washing machine according to some embodiments of the present application, including a cabinet 100;
As shown in fig. 1, 2 and 3, the washing machine further includes an inner tub 120, the inner tub 120 being disposed in the outer tub 110, a motor 400, the motor 400 being disposed at the bottom of the outer tub 110, a fixed carrier 130, the fixed carrier 130 being disposed at the bottom of the outer tub 110 and fixedly connected with the outer tub 110;
As shown in fig. 5, the washing machine further includes a dehydrating shaft 500 rotatably provided on the fixed carrier 130, the dehydrating shaft 500 extending in a direction parallel to the central axis of the inner tub 120 and being in driving connection with the inner tub 120, a washing input shaft 610, the washing input shaft 610 being in driving connection with the rotating part 410 of the motor 400, a washing output shaft 620, the washing output shaft 620 extending in a direction parallel to the central axis of the inner tub 120 and being in driving connection with the pulsator, and a decelerator connected between the washing input shaft 610 and the washing output shaft 620.
The motor 400 may have a structure in which, as shown in fig. 3 and 4, the motor 400 includes a rotating part 410 (rotor) and a fixing part 420 (stator), the rotating part 410 is a housing 210, the fixing part 420 is disposed inside the rotating part 410, as shown in fig. and 4, the fixing carrier 130 includes a fixing housing 210 and a fixing frame connected to the fixing housing 210, the fixing housing includes an upper half housing and a lower half housing which are combined together and fixedly connected, the upper half housing is fixedly connected to the bottom of the outer tub 110, and the decelerator is disposed in the fixing housing.
As shown in fig. 5, the connecting sleeve 320 is sleeved on the dewatering shaft 500 and is positioned between the locking sleeve 310 and the rotary transmission member 240, the connecting sleeve 320 is relatively fixed with the dewatering shaft 500 along the circumferential direction of the connecting sleeve 320, and the connecting sleeve 320 can move relative to the dewatering shaft 500 along the axial direction of the connecting sleeve 320.
As shown in fig. 5, the connection sleeve 320 and the dewatering shaft 500 may be connected by a spline or a flat key, so as to realize a circumferential direction of the connection sleeve 320, and the connection sleeve 320 and the dewatering shaft 500 are relatively fixed along an axial direction of the connection sleeve 320, and the connection sleeve 320 is movable relative to the dewatering shaft 500.
When the washing machine is in a washing state, as shown in fig. 3,4 and 5, the tractor 200 pulls the upper end of the driving lever 150 through the pulling rope, so that the driving lever 150 rotates around the hinge shaft, the lower end of the driving lever 150 is abutted against the connecting sleeve 320, an acting force is applied to the connecting sleeve 320, so that the connecting sleeve 320 moves to a locking position, since the locking sleeve 310 is fixed on the fixed carrier 130, along the circumferential direction of the connecting sleeve 320141, the connecting sleeve 320 is relatively fixed with the dehydrating shaft 500, the locking sleeve 310 is relatively fixed with the connecting sleeve 320, at this time, the locking sleeve 310 can lock the rotation of the connecting sleeve 320, and then lock the dehydrating shaft 500, so as to disconnect the power transmission between the connecting sleeve 320 and the rotating part 410 of the motor 400, at this time, the rotating part 410 of the motor 400 drives the washing input shaft 610 to rotate at a high speed, the rotating speed of the washing input shaft 610 is transmitted to the washing output shaft 620 after being decelerated by the decelerator, and then the impeller at the bottom of the inner tub 120 is driven to rotate at a low speed by the washing output shaft 620, so that laundry in the inner tub 120 is washed.
In the process of switching the pulsator washing machine to the dehydration state, when the traction rope is stopped from being pulled by the traction device 200, the deflector rod 150 is not acted by the pulling force of the traction rope, the deflector rod 150 reversely rotates around the hinge shaft under the action of the reset force of the elastic reset piece, the lower end of the deflector rod 150 is separated from the connecting sleeve 320, so that the deflector rod 150 is reset, the connecting sleeve 320 is not acted by the lower end of the deflector rod 150 after the deflector rod 150 is reset, and the first elastic piece applies elastic force to the connecting sleeve 320, so that the connecting sleeve 320 moves to the transmission position.
When the washing machine is in a dehydrating state, the tractor 200 pulls the connecting sleeve 320 to a transmission position, the rotating part 410 of the motor 400 washes the input shaft 610 and the washing input shaft 610 drives the sun gear 710 to rotate, meanwhile, the rotating part 410 of the motor 400 drives the dehydrating shaft 500 (the dehydrating input shaft 510, the dehydrating output shaft 520 and the connecting cylinder 530) to rotate in the same direction and in the same speed with the sun gear 710 through the rotary transmission part 240, the dehydrating output shaft 520 drives the inner barrel 120 to rotate in the same direction and in the same speed with the sun gear 710, and the connecting cylinder 530 drives the outer gear ring to rotate in the same direction and in the same speed with the sun gear 710, and according to the characteristics of the planetary gear 720, the planet carrier 730 rotates in the same direction as the sun gear 710 at the moment, and the planet carrier 730 is connected with the washing output shaft 620, so that the planet carrier 730 can drive the wave wheel and the sun gear 710 to rotate in the same direction and in the same speed through the washing output shaft 620, and the inner barrel 120 rotates in the same direction and in the same speed as the wave wheel at the moment, so that centrifugal dehydration treatment is carried out on clothes in the inner barrel 120.
As shown in fig. 6 and 7, in some embodiments according to the present application, the washing machine includes a retractor 200, and the retractor 200 is provided in the cabinet 100 for pulling the lever 150 to switch the operation state of the washing machine.
As shown in fig. 7, in some embodiments according to the present application, the retractor 200 includes a housing 210, the housing 210 has a box shape, and a first shaft hole, a second shaft hole, and a third shaft hole are formed in the housing 210.
The housing 210 is coupled to the bottom of the tub 110 for accommodating the traction motor 220, the traction wheel 230, and the driving part 240.
As shown in fig. 7, in some embodiments according to the present application, the retractor 200 includes a traction motor 220, and a terminal of the traction motor 220 is penetrated through the first shaft hole by a wire.
Traction motor 220 is used to provide traction torque to retractor 200.
As shown in fig. 7, in some embodiments according to the present application, the tractor 200 includes a traction wheel 230, the traction wheel 230 has a disk shape, and a traction shaft 231 is provided at the top of the traction wheel 230.
The traction wheel 230 is rotatably disposed on the housing 210, a traction shaft 231 is disposed on the traction wheel 230, and the traction shaft 231 is connected with a traction rope, which is connected to the lever 150.
The traction wheel 230 rotates along with the second transmission shaft 242 to pull the traction rope, which pulls the deflector rod 150 for changing the operating state of the washing machine.
As shown in fig. 7, in some embodiments according to the application, the retractor 200 includes a transmission 240, the transmission 240 including a first transmission shaft 241, a second transmission shaft 242, a motor 400 gear 243, a first transmission gear 244, and a second transmission gear 245.
A transmission 240 is provided between the traction wheel 230 and the traction motor 220 to transmit an output torque of the traction motor 220 to the traction wheel 230.
Specifically, the first transmission shaft 241 is rotatably disposed on the inner wall of the housing 210, the second transmission shaft 242 is rotatably disposed on the inner wall of the housing 210, one end of the second transmission shaft 242 extends to the outside of the housing 210, the traction wheel 230 is connected to the second transmission shaft 242, the motor 400 gear 243 is disposed on the motor 400 shaft 221 of the traction motor 220, the first transmission gear 244 is disposed on the first transmission shaft 241, the first transmission gear 244 is engaged with and connected to the motor 400 gear 243, the second transmission gear 245 is disposed on the second transmission shaft 242, and the second transmission gear 245 is engaged and connected to the first transmission gear 244.
The first transmission shaft 241 is used for receiving the torque of the traction motor 220, the second transmission shaft 242 is used for receiving the torque of the traction motor 220 transmitted by the first transmission shaft 241, the motor 400 gear 243 is used for transmitting the torque of the traction motor 220 to the first transmission gear 244, the first transmission gear 244 is used for transmitting the torque of the traction motor 220 to the first transmission shaft 241 and driving the first transmission shaft 241 to rotate, and the second transmission gear 245 is used for enabling the second transmission shaft 242 and the first transmission shaft 241 to rotate together.
As shown in fig. 7 and 8, according to some embodiments of the present application, the retractor 200 includes a sliding potentiometer monitoring circuit for monitoring in real time the distance the retractor 200 is pulling the lever 150.
According to some embodiments of the present application, the sliding potentiometer monitor circuit includes a cam 246, a sliding potentiometer 247, a slider 248, and a detection output 249, each point on the profile of the cam 246 being a different distance from the center of rotation of the cam 246.
The cam 246 is disposed on the traction wheel 230, and in particular, the cam 246 is connected to the second transmission shaft 242, so that the cam 246 and the traction wheel 230 rotate synchronously.
A sliding potentiometer 247 is provided on the housing 210.
The sliding potentiometer 247 is used to convert the linear travel of the slider 248 into a measurable recorded value, i.e., into a resistance value.
The sliding vane 248 has one end slidably disposed on the sliding potentiometer 247 to change the resistance of the sliding potentiometer 247, and the other end of the sliding vane 248 contacts the cam 246.
The slide 248 is used to convert the curvilinear travel of the cam 246 into a linear travel.
The detection output end 249, the detection output end 249 is electrically connected with the sliding potentiometer 247.
And the monitoring output end is used for outputting the resistance value of the sliding point device.
In the process that the sliding potentiometer monitoring circuit detects the moving distance of the pulling rod 150 pulled by the pulling device 200, the rotating cam 246 pushes the sliding sheet 248 to move to different positions of the sliding potentiometer 247, so that the moving distance of the pulling rod 150 is converted into the resistance change amount of the sliding potentiometer 247, and therefore the accuracy of the pulling device 200 in monitoring the moving distance of the pulling rod 150 is ensured.
That is, during the rotation of the cam 246 along with the second transmission shaft 242, the cam 246 pushes the contact slide 248 to slide on the sliding potentiometer 247 to change the resistance value of the sliding potentiometer 247, when the slide 248 slides on the sliding potentiometer 247, the resistance value of the sliding potentiometer 247 is changed by changing a single variable (the electrified length of the sliding potentiometer 247), the detection output end 249 detects the change of the resistance value of the sliding potentiometer 247 in real time and transmits the change of the resistance value to the controller, and the controller controls the traction distance of the tractor 200 by quantitatively changing the resistance value of the sliding potentiometer 247.
The rotating cam 246 pushes against the contact slide 248 to move to different positions of the sliding potentiometer 247, so that the moving distance of the shift lever 150 is converted into the resistance change amount of the sliding potentiometer 247, and the moving distance L of the shift lever 150 and the resistance change amount of the sliding potentiometer 247 are in one-to-one correspondence.
Specifically, as shown in fig. 9 and 10, the initial radius of the cam 246 is r1, the stopping radius of the cam 246 is r2, the opening width of the cam 246 is a, the distance from the traction shaft 231 to the traction center is r3, the initial distance of the sliding vane 248 on the sliding potentiometer 247 is L2, the stopping sliding distance of the sliding vane 248 on the sliding potentiometer 247 is L1, the maximum sliding distance of the sliding potentiometer 247 is L3, and the relationship between the traction length and the resistance can be deduced according to the above values, and the deduction process is as follows:
traction length l=r3 (1-cos θ) (1) after cam rotation θ angle
The cam curve radius increases by Δr=r2-r1= (a/2 does not) ×θ (2)
The slide 248 moves the same distance as the cam curve radius increases by l1_l2=Δr
The initial state sliding potentiometer 247 has a resistance value of r=l2/l3×rstal (3)
The sliding potentiometer 247 has a resistance value of r=l1/l3×r (4) after the angle θ is turned
The rotation angle theta and the resistance value delta R are in one-to-one relation according to the formulas (1) and (4), so that the cam movement position can be judged by detecting the resistance value.
According to some embodiments of the application, the sliding potentiometer monitor circuit further comprises a controller coupled to traction motor 220 and detection output 249.
The controller is used for determining the resistance change of the sliding potentiometer 247 in real time, and controlling the rotating angle of the motor 400 shaft 221 of the motor 400 so as to realize the controllable traction distance of the tractor 200.
The controller is configured to control the traction motor 220 to maintain a position of stopping rotation when the traction motor 220 stops rotating.
The specific working principle of the cam 246 is that when the cam 246 rotates, the radius from the contact point of the cam 246 and the sliding vane 248 to the traction center changes in real time, the sliding vane 248 is driven to slide on the sliding potentiometer 247 by the change of the radius from the contact point of the cam 246 and the sliding vane 248 to the traction center, the resistance value of the sliding potentiometer 247 is changed by changing the electrifying length of the sliding potentiometer 247, the deflector rod 150 is pulled in the rotating process of the cam 246, the pulling distance is converted into the moving distance of the deflector rod 150, the working state of the washing machine is changed, and the controller can obtain the resistance value of the sliding potentiometer 247 in real time and control the rotating angle of the pulling motor 220, so that the retractor 200 can stop at all points in the travel, and the current pulling position of the retractor 200 can be maintained.
According to the first conception of the application, as the sliding potentiometer monitoring circuit is additionally arranged, the cam structure is additionally arranged in the tractor, the load (the deflector rod) is driven to traction and move when the cam rotates, meanwhile, the cam structure drives the sliding sheet to move on the sliding potentiometer, the traction distance is converted into the sliding sheet moving distance, the position of the sliding potentiometer is changed when the sliding sheet moves on the sliding potentiometer, the resistance value of the sliding potentiometer is also changed, the traction distance is converted into the resistance value, and the aim of detecting the traction distance in real time is fulfilled by detecting the output end to output the resistance value to the controller, so that the high precision of the traction distance detection of the tractor is ensured, and the working performance of the washing machine is improved.
According to the second concept of the present application, since the working form of the retractor is improved, the controller is connected to the traction motor to control the traction motor to draw the shift lever to move, and when the traction motor stops rotating, the traction motor is controlled to maintain the position where the rotation is stopped, so that the accuracy of the traction distance of the retractor is ensured, the traction length is controllable, and the condition that the traction motor stops shifting fork to return to the initial position is avoided.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (2)
1. A washing machine, comprising:
the box body is internally provided with a clutch, and the clutch is connected with a deflector rod;
The outer barrel is arranged in the box body;
The inner barrel is arranged in the outer barrel;
Characterized by further comprising:
the tractor, set up in the box is used for drawing the driving lever is in order to switch the operating condition of washing machine, the tractor includes:
the sliding potentiometer monitoring circuit is used for monitoring the moving distance of the deflector rod pulled by the tractor in real time;
The fixed carrier is connected to the outer barrel, and the middle part of the deflector rod is rotationally connected to the fixed carrier;
The stirring end of the stirring rod is abutted to the connecting sleeve;
The traction device is used for traction the traction end of the deflector rod so as to limit the deflector rod to rotate around the joint of the deflector rod and the fixed carrier, and the deflector end of the deflector rod is used for pressing the connecting sleeve to move from a transmission position to a locking position so as to switch the washing machine from a dewatering state to a washing state;
The shell is connected to the bottom of the outer barrel;
The traction wheel is provided with a traction shaft, the traction shaft is connected with a traction rope, the traction rope is connected to the deflector rod, and the traction wheel is rotationally arranged on the shell so as to traction the deflector rod to move;
the traction motor is arranged on the shell, and a motor shaft of the traction motor penetrates through the shell;
The transmission part is arranged between the traction wheel and the traction motor so as to transmit the output torque of the traction motor to the traction wheel.
2. A sliding potentiometer monitoring circuit, which is applied to the washing machine as claimed in claim 1 and is used for monitoring the moving distance of the deflector rod pulled by the puller in real time;
the sliding potentiometer monitoring circuit comprises:
the cam is arranged on the traction wheel so that the cam and the traction wheel synchronously rotate;
the sliding potentiometer is arranged on the shell;
one end of the sliding vane is arranged on the sliding potentiometer in a sliding manner so as to change the resistance value of the sliding potentiometer, and the other end of the sliding vane is propped against the cam;
the detection output end is electrically connected with the sliding potentiometer;
the distances from each point on the profile of the cam to the rotation center of the cam are different;
The rotating cam is propped against the sliding sheet to move to different positions of the sliding potentiometer, so that the moving distance of the deflector rod is converted into the resistance variable quantity of the sliding potentiometer;
The sliding potentiometer monitoring circuit further comprises:
The traction motor with detect the output all connect in the controller, the controller is used for confirming in real time the resistance change volume of slip potentiometer, just the controller is used for controlling the motor shaft pivoted angle of motor, the controller is configured as:
and when the traction motor stops rotating, controlling the traction motor to keep a position where the traction motor stops rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011187374.0A CN112281406B (en) | 2020-10-29 | 2020-10-29 | A washing machine and a sliding potentiometer monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011187374.0A CN112281406B (en) | 2020-10-29 | 2020-10-29 | A washing machine and a sliding potentiometer monitoring circuit |
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| Publication Number | Publication Date |
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| CN112281406A CN112281406A (en) | 2021-01-29 |
| CN112281406B true CN112281406B (en) | 2024-12-27 |
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| CN202011187374.0A Active CN112281406B (en) | 2020-10-29 | 2020-10-29 | A washing machine and a sliding potentiometer monitoring circuit |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201173759Y (en) * | 2007-12-21 | 2008-12-31 | 孙向丽 | Stay-supported type displacement sensor |
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| KR102168431B1 (en) * | 2017-10-24 | 2020-10-21 | 경북대학교 산학협력단 | Active Retractor and Control Method thereof |
| CN110846858A (en) * | 2019-12-09 | 2020-02-28 | 浙江三星机电股份有限公司 | A clutch conversion transmission mechanism for washing machine clutch |
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| CN201173759Y (en) * | 2007-12-21 | 2008-12-31 | 孙向丽 | Stay-supported type displacement sensor |
| CN111691112A (en) * | 2020-06-12 | 2020-09-22 | 海信（山东）冰箱有限公司 | Pulsator washing machine and control method thereof |
| CN214142939U (en) * | 2020-10-29 | 2021-09-07 | 海信（山东）冰箱有限公司 | Washing machine and LC detection device applied to tractor |
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