Intelligent control drainage tractor for washing machine

Abstract

The present invention discloses an intelligent controlled drainage tractor for a washing machine, comprising a housing, wherein the housing further comprises: a reed switch assembly, comprising a reed mounting plate and front and rear reed assemblies for controlling a driving motor; a first cam and a second cam, respectively cooperating with the moving contact pieces of the front and rear reed assemblies to make the moving contact pieces contact and connect with the stationary contact pieces; an eccentric wheel, on which a convex shaft is provided; a slide bar support assembly, comprising a slide bar and a bracket, wherein a convex shaft groove is provided on the slide bar, the convex shaft is arranged in the convex shaft groove, and the slide bar is driven to slide up and down with the rotation of the eccentric wheel; the bracket is arranged in the bracket groove of the slide bar, and is used to support a clutch lever. The present invention realizes the switching of the clutch by driving the eccentric wheel to control the sliding of the slide bar support assembly through a motor, and controls the on and off of the driving motor through the cooperation of the first cam and the second cam with the reed switch assembly, so as to realize the opening and closing of the washing machine clutch through multiple strokes, thereby increasing the service life of the washing machine.

Description

Technical Field

[0001] The invention relates to the technical field of washing machines, and in particular to an intelligently controlled drainage tractor for a washing machine. Background Art

[0002] A washing machine is a cleaning appliance that uses electrical energy to generate mechanical action to wash clothes. As washing machine technology continues to mature, fully automatic washing machines that automatically control the washing program using a microcomputer are becoming more and more popular in the market. The drainage tractor is one of the most important structures in a fully automatic washing machine. Its main function is to turn the clutch to close the inner and outer drums for dehydration and to open the drain valve for drainage.

[0003] There are generally two types of stop mechanisms for conventional washing machine tractors. One type uses an induction magnet and an induction ring as a stop mechanism, which is driven by the same motor and can only achieve single-stroke traction. The second type uses a relay as a stop mechanism and is a double-stroke tractor controlled by a stroke cam and a reed. However, due to the malfunction of the relay and the service life of the relay, the stability and service life of the tractor are affected.

[0004] To this end, Chinese utility model patent CN202298224U provides a two-way traction device for a washing machine, including a synchronous drive motor, an output shaft of the synchronous drive motor is connected to the input end of a planetary gear mechanism, the output end of the planetary gear mechanism is connected to a first output gear, the first output gear is meshed with a second output gear, the second output gear is meshed with an output tooth, the output tooth is linked to a rack or a wire rope, the induction part includes an induced synchronous motor, an induced ring for generating a constant torque according to a rotating magnetic field generated by the uniform rotation of the rotor is installed on the outer side of the rotor of the induced synchronous motor, the induced ring is rotatably installed on the bottom of the rotor of the induced synchronous motor, the second transmission gear on the induced ring is meshed with a stop gear, a first reverse stop for preventing the motor from reversing is installed on the stop gear, the stop gear is meshed with one end of a stop lever, the other end of the stop lever cooperates with a stop wheel assembly to realize a stopping function, a stop spring is installed at the fulcrum of the stop lever to realize drainage of the washing machine.

[0005] However, when the power of the two-way traction device of the washing machine is cut off, the stop lever returns to its original position under the pulling force of the stop spring, so that the rack or wire rope is pulled outward to rotate in the direction of the processing gear. When the rack or wire rope is completely pulled out, the travel cam returns to the starting state, so that the first and second spring leaves are disconnected to achieve reset. In this process, the traction device is quickly reset when the power is cut off. As the working time of the washing machine increases, the washing machine clutch has the problem of severe wear, which seriously affects its service life.

[0006] In view of this, there is an urgent need to improve the traction device of the washing machine in the prior art to reduce the reset speed of the traction device after power failure, reduce the wear of the washing machine clutch, and extend its service life. Summary of the invention

[0007] The technical problem to be solved by the present invention is that the existing washing machine drainage traction device has a fast reset speed, the washing machine clutch is severely worn, and its service life is affected.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0009] A washing machine intelligently controlled drainage tractor comprises a housing and also comprises:

[0010] A motor assembly is arranged in the housing, comprising a driving motor and a transmission gear, wherein the motor shaft of the driving motor passes through the housing, and the transmission gear is arranged on the motor shaft of the driving motor;

[0011] A reed switch assembly, comprising a reed mounting plate and a front reed assembly and a rear reed assembly for controlling the drive motor, wherein the moving contact pieces of the front reed assembly and the rear reed assembly are electrically connected, and the stationary contact piece is arranged on one side of the moving contact piece;

[0012] A first cam and a second cam are rotatably disposed on the spring sheet mounting plate and respectively cooperate with the movable contact pieces of the front spring sheet assembly and the rear spring sheet assembly so that the movable contact pieces are in contact and connected with the stationary contact pieces;

[0013] An eccentric wheel, sleeved with the first cam and the second cam on the motor shaft of the driving motor, is arranged on the rear end surface of the housing, and a convex shaft is provided on the rear end surface of the eccentric wheel;

[0014] The slide rod support assembly is arranged on the rear end surface of the shell, and includes a slide rod and a bracket. A cam groove is provided on the front end surface of the slide rod, and the cam is arranged in the cam groove. The slide rod is driven to slide up and down as the eccentric wheel rotates; the bracket is arranged in the bracket groove of the slide rod and is used to support the clutch lever.

[0015] In the above solution, preferably, the housing includes:

[0016] The motor box has an opening on its front end surface; the motor assembly, the reed switch assembly, the first cam and the second cam are arranged in the motor box;

[0017] A slide bar box is arranged on the rear end surface of the motor box, and an opening is arranged on the rear end surface; a motor shaft hole is arranged through the motor box and the slide bar box, and the motor shaft of the driving motor is arranged in the motor shaft hole;

[0018] An outer cover, mounted on the opening of the motor box;

[0019] The upper cover is installed on the opening of the slide bar box, and a washing machine lever groove is arranged on the top surface thereof, and a clutch lever groove is arranged on the side surface thereof.

[0020] In the above solution, preferably, a first fixing buckle is provided on the top surface and the bottom surface of the motor box, and a first fixing groove matched with the first fixing buckle is provided on the top surface and the bottom surface of the outer cover.

[0021] In the above scheme, preferably, a limiting ridge is provided on the outer side surface of the motor box, the limiting ridge is vertically arranged on the outer side surface of the motor box, and a limiting groove matched with the limiting ridge is provided on the outer side surface of the outer cover.

[0022] In the above scheme, preferably, a second fixing buckle and a screw fixing portion are provided on the outer side of the slide bar box, and a second fixing slot and a fixing ear matched with the second fixing buckle and the screw fixing portion are provided on the outer side of the upper cover.

[0023] In the above solution, preferably, the front spring assembly is arranged on the front end surface of the spring mounting plate, and includes:

[0024] The first moving contact piece is U-shaped, and the first deformed convex parts are arranged on the two side arms thereof, and the first moving contact points are arranged at the ends of the two side arms;

[0025] The first static contact piece and the second static contact piece are arranged on both sides of the first moving contact piece, and the first static contact point and the second static contact point are arranged on the ends of the first static contact piece for electrically connecting with the first moving contact point.

[0026] In the above solution, preferably, the rear spring assembly is arranged on the rear end surface of the spring mounting plate, and includes:

[0027] A second moving contact piece, electrically connected to the first moving contact piece; a second deformable protrusion and a second moving contact point are provided at an end thereof;

[0028] The third stationary contact piece is arranged on one side of the second moving contact piece, and a third stationary contact point is arranged on the end of the third stationary contact piece.

[0029] In the above solution, preferably, a cam groove is provided on the outer circumferential surface of the first cam, and the shape and size of the cam groove are adapted to the shape and size of the first deformation convex portion.

[0030] In the above solution, preferably, a cam protrusion is provided on the outer circumferential surface of the second cam, which is used to push the second deformation protrusion to electrically connect the second moving contact piece with the third stationary contact piece.

[0031] In the above solution, preferably, a spring is further provided between the bracket and the slide rod.

[0032] Compared with the prior art, the intelligent controlled drainage traction device for a washing machine provided by the present invention realizes the switching of the clutch by controlling the sliding of the slide rod support assembly through a motor-driven eccentric wheel, and controls the on and off of the driving motor through the cooperation of the first and second cams and the reed switch assembly, thereby controlling the opening and closing of the washing machine clutch through multiple strokes, effectively avoiding the wear caused by the rapid resetting of the clutch after the traction device is powered off, and increasing the service life of the washing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A three-dimensional diagram of the intelligently controlled drainage tractor of the washing machine of the present invention;

[0034] Figure 2 It is a schematic diagram of the structure disassembly of the intelligent control drainage traction device of the washing machine in the present invention;

[0035] Figure 3 It is a cross-sectional schematic diagram of the intelligent control drainage traction device of the washing machine in the present invention;

[0036] Figure 4 It is a structural schematic diagram of the reed switch assembly in the present invention;

[0037] Figure 5 It is a structural schematic diagram of the reed switch assembly of the present invention from another angle;

[0038] Figure 6 It is a structural schematic diagram of the slide rod support assembly in the present invention.

[0039] in, Figures 1 to 6 The corresponding relationship between the names of the components and the reference numerals is as follows:

[0040] Housing 1, reed switch assembly 3, first cam 4, second cam 5, eccentric wheel 6, slide bar 7, bracket 8, spring 9,

[0041] Motor box 11, outer cover 12, upper cover 13, slide bar box 14,

[0042] Motor shaft hole 101,

[0043] The first fixing buckle 111, the limiting ridge 112,

[0044] The first fixing slot 121, the limiting slot 122,

[0045] The second fixing slot 131, the fixing ear 132, the washing machine lever groove 133, the clutch lever groove 134,

[0046] The second fixing buckle 141, the screw fixing portion 142,

[0047] Drive motor 21,

[0048] spring mounting plate 31, first static contact piece 32, second static contact piece 33, first moving contact piece 34, second moving contact piece 35, third static contact piece 36,

[0049] The first static contact 321,

[0050] The second static contact 331,

[0051] The first deformed protrusion 341, the first movable contact 342, the second movable contact 343,

[0052] The third moving contact 351, the second deformed convex portion 352,

[0053] The third static contact 361,

[0054] Cam groove 41,

[0055] Cam protrusion 51,

[0056] The convex shaft 61,

[0057] Sliding rod protrusion 71, protruding shaft groove 72, bracket sliding groove 73, lower spring mounting portion 74, sliding limit groove 75,

[0058] Upper spring mounting portion 81 and sliding limiting portion 82 . DETAILED DESCRIPTION

[0059] The present invention provides a washing machine intelligent control drainage tractor, which controls the sliding of the slide rod support assembly by driving an eccentric wheel through a motor, and controls the on and off of the driving motor by cooperating with a first cam and a second cam and a reed switch assembly, thereby realizing the opening and closing of the washing machine clutch through multiple strokes, thereby increasing the service life of the washing machine. The present invention is described in detail below in conjunction with the drawings and specific embodiments of the specification.

[0060] like Figure 1 , Figure 2 and Figure 3 As shown, the intelligent drainage tractor for a washing machine provided by the present invention comprises a housing 1 and a motor assembly, a reed switch assembly 3, a first cam 4, a second cam 5, an eccentric wheel 6, and a slide rod support assembly arranged in the housing 1.

[0061] The housing 1 includes a motor box 11, an outer cover 12 and an upper cover 13. An opening is provided on the front end surface of the motor box 11, and the motor assembly and the reed switch assembly 3 are provided in the motor box 11 through the opening. The outer cover 12 is detachably mounted on the opening of the motor box 11. A first fixing groove 121 is provided on the top and bottom surfaces of the outer cover 12, and a first fixing buckle 111 is provided on the top and bottom surfaces of the motor box 11. The first fixing buckle 111 and the first fixing groove 121 are adapted to each other to fix the outer cover 12 on the motor box 11. A limiting rib 112 is provided on the outer side surface of the motor box 11, and the limiting rib 112 is vertically arranged on the motor box 11. A limiting groove 122 adapted to the limiting rib 112 is provided on the outer side surface of the outer cover 12, so as to facilitate the positioning and installation of the outer cover 12 on the motor box 11.

[0062] A slide bar box 14 is also provided on the rear end surface of the motor box 11. A motor shaft hole 101 is provided through the motor box 11 and the slide bar box 14. The motor shaft of the motor assembly is arranged in the motor shaft hole 101 to drive the first convex ridge 4 and the second cam 5 to rotate.

[0063] An opening is provided on the rear end surface of the slide bar box 14, and the upper cover 13 is provided on the opening of the slide bar box 14. A second fixing buckle 141 and a screw fixing portion 142 are provided on the outer side surface of the slide bar box 14, and a second fixing slot 131 adapted to the second fixing buckle 141 and a fixing ear 132 adapted to the screw fixing portion 142 are provided on the upper cover 13. The upper cover 13 is limited by the second fixing buckle 141 and the second fixing slot 131, and is fixed to the slide bar box 14 by screws, the screw fixing portion 142 and the fixing ear 132. A washing machine lever groove 133 is provided on the top surface of the upper cover 13, and a clutch lever groove 134 is also provided on the side surface of the upper cover 13.

[0064] The motor assembly is arranged in the motor box 11, and includes a driving motor 21 and a transmission gear, and the transmission gear is sleeved on the motor shaft of the driving motor 41. A partition is also arranged between the transmission gear and the reed switch assembly 5, and the transmission gear is mounted on the partition to prevent the transmission gear from contacting with the reed switch assembly 3 and causing a short circuit, thereby affecting the stability of the operation of the intelligent drainage tractor of the washing machine.

[0065] like Figure 4 and Figure 5 As shown, the reed switch assembly 3 includes a reed mounting plate 31 and a first stationary contact piece 32 , a second stationary contact piece 33 , a first moving contact piece 34 , a second moving contact piece 35 , and a third stationary contact piece 36 mounted on the reed mounting plate 31 .

[0066] The first stationary contact piece 32, the second stationary contact piece 33, and the first moving contact piece 34 are arranged on the front end surface of the spring mounting plate 31. The first moving contact piece 34 is in an inverted U shape. The first stationary contact piece 32 and the second stationary contact piece 33 are respectively arranged on both sides of the first moving contact piece 34. The lower ends of the first stationary contact piece 32 and the second stationary contact piece 33 are provided with a first stationary contact point 321 and a second stationary contact point 331. The lower part of the first moving contact piece 34 is provided with two first deformable protrusions 341, which are arranged to protrude inwardly along the two side arms of the first moving contact piece 34, and the first moving contact point 342 and the second moving contact point 343 are arranged below the two first deformable protrusions 341.

[0067] The first cam 4 is rotatably disposed in the U-shaped groove of the first movable contact 34, and its outer circumference abuts against the side arm of the first movable contact piece 34. A cam groove 41 is provided on the outer circumference of the first cam 4, and the shape and size of the cam groove 41 are adapted to the shape and size of the first deformed protrusion 341.

[0068] The second moving contact piece 35 and the third stationary contact piece 36 are arranged on the rear end surface of the spring mounting plate 31, and the lower ends of the second moving contact piece 35 and the third stationary contact piece 36 are provided with a third moving contact point 351 and a third stationary contact point 361. The second moving contact piece 35 is also provided with a second deformable protrusion 352, and the second deformable protrusion 352 is arranged above the third moving contact point 351. The second moving contact piece 35 is electrically connected to the first moving contact piece 34.

[0069] The second cam 5 is rotatably arranged on one side of the second movable contact piece 35 , and a cam protrusion 51 is arranged on the outer circumferential surface of the second cam 5 . The cam protrusion 51 is used to push the second deformation protrusion 352 to electrically connect the second movable contact piece 35 with the third stationary contact piece 36 .

[0070] like Figure 6 As shown, the eccentric wheel 6 is rotatably arranged in the slide bar box 14, and a convex shaft 61 is arranged on the rear end surface of the eccentric wheel 6. The slide bar support assembly includes a slide bar 7, a bracket 8 and a spring 9. A slide bar convex block 71 is arranged on the top surface of the slide bar 7, and the slide bar convex block 71 is arranged to slide up and down in the groove 132 of the washing machine lever on the upper cover 13. A convex shaft groove 72 is arranged on the front end surface of the slide bar 7, and the convex shaft 61 is arranged in the convex shaft groove 72. A bracket slide groove 73 is arranged on the rear end surface of the slide bar 7, a lower spring mounting portion 74 is arranged on the bottom surface of the bracket slide groove 73, and a sliding limit groove 75 is arranged on the side surface of the bracket slide groove 73. An upper spring mounting portion 81 is arranged on the bottom surface of the bracket 8, and a sliding limit portion 82 is arranged on the side surface of the bracket 8. The two ends of the spring 9 are arranged on the upper spring mounting portion 81 and the lower spring mounting portion 74. The sliding limit portion 82 of the bracket 8 is matched with the sliding limit groove 75, so that the bracket 8 is slidably arranged up and down in the bracket slide groove 73. The lever of the washing machine clutch is arranged above the bracket 8, and the movement of the bracket 8 drives the lever of the washing machine clutch to move, thereby controlling the opening or closing of the washing machine clutch.

[0071] The first cam 4 , the second cam 5 and the eccentric wheel 6 are arranged concentrically on the motor shaft of the driving motor 21 , and the cam groove 41 of the first cam 4 , the cam protrusion 51 of the second cam 5 and the convex shaft 61 of the eccentric wheel 6 are arranged in the same direction.

[0072] The working process of the present invention is as follows:

[0073] In the initial state, the slide bar 7 is located at the bottom, the convex shaft 61 of the eccentric wheel 6 is set in the convex shaft groove 72 of the slide bar 7, the convex shaft 61 is located at the lowest point of the eccentric wheel 6, and the cam protrusion 51 of the second cam 5 abuts against the second moving contact piece 35, so that the third moving contact 351 of the second moving contact piece 35 contacts the third static contact 361 on the third static contact piece 36 to achieve electrical connection. The drive motor 21 is powered on, and the drive motor 21 drives the first cam 4, the second cam 5 and the eccentric wheel 6 to rotate through the motor shaft. As the eccentric wheel 6 rotates, the slide bar 7 slides upward, and the bracket 8 on the slide bar 7 pushes the clutch lever to move slowly, so that the clutch of the washing machine is opened.

[0074] As the driving motor 21 drives the first cam 4 to rotate, the first deformed protrusion 341 on the first moving contact piece 34 enters the cam groove 41 on the first cam 4, causing the first moving contact 342 and the second moving contact 343 to be de-energized from the first static contact 321 and the second static contact 322, thereby realizing multiple operating strokes during the closing process of the washing machine clutch and reducing the wear caused by the rapid opening and closing of the clutch.

[0075] Compared with the prior art, the intelligent controlled drainage traction device for a washing machine provided by the present invention realizes the switching of the clutch by controlling the sliding of the slide rod support assembly through a motor-driven eccentric wheel, and controls the on and off of the driving motor through the cooperation of the first and second cams and the reed switch assembly, thereby controlling the opening and closing of the washing machine clutch through multiple strokes, effectively avoiding the wear caused by the rapid resetting of the clutch after the traction device is powered off, and increasing the service life of the washing machine.

[0076] In the present invention, the shell includes a motor box and a slide bar box arranged on the rear end surface of the motor box, the outer cover and the upper cover are respectively arranged on the openings of the motor box and the slide bar box, and the outer cover and the upper cover are installed on the motor box and the slide bar box by fixing buckles, fixing slots and screws, which are convenient for disassembly and assembly, and convenient for inspection and replacement of internal components of the traction device.

[0077] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention.

Claims

1. A washing machine intelligent control drainage tractor, comprising a housing, characterized in that: The housing also includes: A motor assembly, comprising a driving motor and a transmission gear, wherein the motor shaft of the driving motor passes through the housing, and the transmission gear is arranged on the motor shaft of the driving motor; A reed switch assembly, comprising a reed mounting plate and a front reed assembly and a rear reed assembly for controlling the drive motor, wherein the moving contacts of the front reed assembly and the rear reed assembly are electrically connected, and the stationary contacts of the front reed assembly and the rear reed assembly are arranged on one side of the moving contacts; A first cam and a second cam are rotatably disposed on the spring installation plate and respectively cooperate with the movable contact pieces of the front spring assembly and the rear spring assembly so that the movable contact pieces of the front spring assembly and the rear spring assembly are in contact and connected with their stationary contact pieces; An eccentric wheel, sleeved with the first cam and the second cam on the motor shaft of the driving motor, is arranged on the rear end surface of the housing, and a convex shaft is provided on the rear end surface of the eccentric wheel; The slide rod support assembly is arranged on the rear end surface of the shell, and includes a slide rod and a bracket. A cam groove is provided on the front end surface of the slide rod, and the cam is arranged in the cam groove. The slide rod is driven to slide up and down as the eccentric wheel rotates; the bracket is arranged in the bracket groove of the slide rod and is used to support the clutch lever.

2. The intelligent controlled drainage tractor for washing machine according to claim 1, characterized in that: The housing comprises: The motor box has an opening on its front end surface; the motor assembly, the reed switch assembly, the first cam and the second cam are arranged in the motor box; A slide bar box is arranged on the rear end surface of the motor box, and an opening is arranged on the rear end surface; a motor shaft hole is arranged through the motor box and the slide bar box, and the motor shaft of the driving motor is arranged in the motor shaft hole; An outer cover, mounted on the opening of the motor box; The upper cover is installed on the opening of the slide bar box, and a washing machine lever groove is arranged on the top surface thereof, and a clutch lever groove is arranged on the side surface thereof.

3. The intelligent controlled drainage tractor for washing machine according to claim 2, characterized in that: The top surface and the bottom surface of the motor box are provided with first fixing buckles, and the top surface and the bottom surface of the outer cover are provided with first fixing grooves matched with the first fixing buckles.

4. The intelligent controlled drainage tractor for washing machine according to claim 2, characterized in that: A limiting ridge is provided on the outer side of the motor box, and the limiting ridge is vertically arranged on the outer side of the motor box. A limiting groove matched with the limiting ridge is provided on the outer side of the outer cover.

5. The intelligent controlled drainage tractor for washing machine according to claim 2, characterized in that: A second fixing buckle and a screw fixing portion are arranged on the outer side of the slide bar box, and a second fixing slot and a fixing ear matched with the second fixing buckle and the screw fixing portion are arranged on the outer side of the upper cover.

6. The intelligent controlled drainage tractor for washing machine according to claim 2, characterized in that: The front spring assembly is arranged on the front end surface of the spring mounting plate, and includes: The first moving contact piece is U-shaped, and the first deformed convex parts are arranged on the two side arms thereof, and the ends of the two side arms are provided with first moving contacts; The first static contact piece and the second static contact piece are arranged on both sides of the first moving contact piece, and the first static contact point and the second static contact point are arranged on the ends of the first static contact piece for electrically connecting with the first moving contact point.

7. The intelligent controlled drainage tractor for washing machine according to claim 6, characterized in that: The rear reed assembly is arranged on the rear end surface of the reed mounting plate, and includes: A second moving contact piece, electrically connected to the first moving contact piece; a second deformable protrusion and a second moving contact point are provided at an end thereof; The third stationary contact piece is arranged on one side of the second moving contact piece, and a third stationary contact point is arranged on the end of the third stationary contact piece.

8. The intelligent controlled drainage tractor for washing machine according to claim 6, characterized in that: A cam groove is provided on the outer circumferential surface of the first cam, and the shape and size of the cam groove are adapted to the shape and size of the first deformation convex portion.

9. The intelligent controlled drainage tractor for washing machine according to claim 7, characterized in that: A cam protrusion is provided on the outer circumferential surface of the second cam, which is used to push the second deformable protrusion to electrically connect the second moving contact piece with the third stationary contact piece.

10. The intelligent controlled drainage tractor for washing machine according to claim 1, characterized in that: A spring is also provided between the bracket and the slide rod.

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