A water distributor for drum washing machine

Abstract

The present invention discloses a water distributor for a drum washing machine, comprising a motor (1), wherein the motor (1) drives a swing arm cam (3) to rotate and drives a swing arm (4) to swing through a gear transmission mechanism (2); the gear transmission mechanism (2) comprises a gear gear (21), a gear cam (22) is provided on the gear gear (21), a plurality of gears (221) corresponding to the water inlet sequence and water inlet time of various parts of a washing machine feeding box are provided on the circumference of the gear cam (22), a switch toggle lever (5) matched with the gear cam (22) is provided on the side of the gear cam (22), and a gear toggle tip (51) corresponding to the gear (221) and a switch toggle convex point (52) corresponding to a micro switch (6) are provided on the switch toggle lever (5), and the micro switch (6) is mounted on a printed circuit board (7). The present invention can realize the water inlet sequence and water inlet time of various parts of the washing machine feeding box through a circuit structure.

Description

Technical Field

[0001] The invention relates to the technical field of washing machines, in particular to a water distributor for drum washing machines which has a single-channel drive and a simplified and reasonable structure. Background Art

[0002] At present, for most drum washing machines on the market, the water inlet sequence and time control of various parts of the feed box are controlled by setting a water inlet valve for each line. This multi-pipeline design has a complex and cumbersome structure and high cost. Summary of the invention

[0003] The purpose of the present invention is to provide a water distributor for a drum washing machine with a single-channel drive and a simplified and reasonable structure in order to address the shortcomings of the cumbersome and complex multi-pipeline structure of the prior art; the water distributor can realize the water inlet sequence and water inlet time of various parts of the washing machine feed box through a single-channel structure.

[0004] The purpose of the present invention is to be solved by the following technical solutions:

[0005] A water distributor for a drum washing machine comprises a motor, characterized in that: the motor drives a swing arm cam to rotate through a gear transmission mechanism, and the swing arm cam drives the swing arm linked therewith to control the positioning of a water inlet nozzle; the gear transmission mechanism comprises a gear gear, on which a gear cam coaxially arranged therewith is provided, and on the circumference of the gear cam are provided a plurality of gears corresponding to the water inlet sequence and water inlet time of various parts of a feeding box of the washing machine, a switch toggle lever cooperating therewith is provided beside the gear cam, and a gear toggle tip corresponding to the gear and a switch toggle convex point corresponding to the micro switch are provided on the switch toggle lever, the micro switch is mounted on a printed circuit board and the two are electrically connected, the printed circuit board can transmit the ON time waveform information of the micro switch to the washing machine controller, and the above-mentioned gear cam, switch toggle lever, micro switch and printed circuit board constitute the gear control mechanism of the water distributor.

[0006] The central axis of the gear cam and the gear gear is fixedly connected to the rotating axis of the swing arm cam, and the swing arm cam can rotate along with the gear cam and the gear gear. The gear cam and the swing arm cam cooperate with each other to move the swing arm to the required position to spray water for a specified time.

[0007] A compression spring is arranged on the switch toggle lever on the opposite side of the gear toggle tip, and the other end of the compression spring is embedded in a compression spring groove arranged on the housing. Under the action of the compression spring, the gear toggle tip always fits the circumferential surface of the gear cam.

[0008] The switch toggle protrusion is arranged at the front end of the switch toggle rod, and the rear end of the switch toggle rod is sleeved on the toggle rod positioning column, so that the switch toggle rod can touch the micro switch or stay away from the micro switch under the action of the compression spring and the gear position on the gear cam.

[0009] The motor is connected to the printed circuit board through a line and is controlled by the washing machine controller through the printed circuit board.

[0010] The gear position protrudes from the circumference of the gear position cam and four gear positions are arranged on the circumference of the gear position cam.

[0011] The gear transmission mechanism includes an output gear arranged on the output shaft of the motor, a first-level large gear meshing with the output gear is provided on the side of the output gear, and a first-level small gear coaxially arranged on the first-level large gear; a second-level large gear meshing with the first-level small gear is provided on the second-level positioning shaft above the output shaft of the motor, and a second-level small gear coaxially arranged on the second-level large gear; the second-level small gear is meshing with the gear gear on the side thereof; after the motor is started, the output gear drives the first-level large gear and the first-level small gear to rotate, the first-level small gear drives the second-level large gear and the second-level small gear to rotate, the second-level small gear drives the gear gear to rotate, and the central axis of the gear gear drives the swing arm cam to rotate, and the swing arm cam drives the swing arm to swing to drive the water inlet nozzle to be in the set washing machine feeding box position.

[0012] The first-stage large gear and the first-stage small gear are integrally formed and sleeved on the first-stage positioning shaft, the second-stage large gear and the second-stage small gear are integrally formed and sleeved on the second-stage positioning shaft, the gear gear, the gear cam and the central axes of the two are integrally formed and the central axes of the gear gear and the gear cam are the same as the axis of the first-stage positioning shaft.

[0013] A swing arm trajectory groove is provided at the bottom of the swing arm cam, in which a swing arm trajectory column of the swing arm is embedded and one end of the swing arm is fixed on the shell. The swing trajectory column can move along the trajectory extension direction of the swing arm trajectory groove during the rotation of the swing arm cam, thereby driving the positioning fork at the front end of the swing arm to swing to adjust the position of the water inlet nozzle.

[0014] The shell includes an upper cover and a lower cover connected by screws, and the motor is fixed to the lower cover by screws. The protective plate on the upper cover can shield the printed circuit board fixed on the lower cover, and the side positioning strip of the protective plate can be inserted along the positioning groove provided on the lower cover to position the relative positions of the upper cover and the lower cover.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The water distributor of the present invention can realize the water inlet sequence and water inlet time of various parts of the washing machine feed box through a single-channel structure, and can realize this by moving the water inlet nozzle above the feed box to the required position through the single-channel structure. The whole is equivalent to a robot moving the water inlet nozzle above the feed box to the required position, thereby realizing single-structure management of water inlet, and the water inlet nozzle moves to different positions to supply water according to the instructions of the washing machine program, which greatly simplifies the structure and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a schematic diagram of the cross-sectional structure of the water distributor of the present invention;

[0018] Attached Figure 2 It is a schematic diagram of the gear position control mechanism of the water distributor of the present invention;

[0019] Attached Figure 3 It is a top view of the water distributor of the present invention.

[0020] Among them: 1—motor; 2—gear transmission mechanism; 21—gear; 22—gear cam; 221—gear; 23—output gear; 24—first-stage large gear; 25—first-stage small gear; 26—second-stage positioning shaft; 27—second-stage large gear; 28—second-stage small gear; 29—first-stage positioning shaft; 3—swing arm cam; 31—swing arm track groove; 4—swing arm; 41—swing track column; 42—positioning fork; 5—switch toggle lever; 51—gear toggle tip; 52—switch toggle convex point; 6—micro switch; 7—printed circuit board; 8—compression spring; 9—housing; 91—compression spring groove; 92—toggle lever positioning column; 93—upper cover; 94—lower cover; 95—protective plate. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figure 1-3As shown: a water distributor for a drum washing machine, comprising a motor 1, the motor 1 is connected to a printed circuit board 7 through a line and is controlled by a washing machine controller through the printed circuit board 7, the motor 1 drives a swing arm cam 3 to rotate through a gear transmission mechanism 2, and the swing arm cam 3 drives a swing arm 4 linked thereto to control the positioning of a water inlet nozzle; the gear transmission mechanism 2 comprises a gear 21, on which a gear cam 22 coaxially arranged therewith is provided, the central axis of the gear cam 22 and the gear 21 is fixedly connected to the rotating axis of the swing arm cam 3 and the swing arm cam 3 can rotate with the gear cam 22 and the gear 21, the gear cam 22 and the swing arm cam 3 cooperate with each other to move the swing arm 4 to a desired position for spraying water for a specified time; a plurality of gears 221 corresponding to the water inlet order and water inlet time of each part of the washing machine feeding box are provided on the circumference of the gear cam 22, the gear 11 protrudes from the circumference of the gear cam 1 and the gear cam 1 is provided with four gears 11 on the circumference; a switch toggle rod 5 matched therewith is provided beside the gear cam 22, and a gear toggle tip 51 corresponding to the gear 221 and a switch toggle convex point 52 corresponding to the micro switch 6 are provided on the switch toggle rod 5, the micro switch 6 is mounted on the printed circuit board 7 and the two are electrically connected, the printed circuit board 7 can transmit the ON time waveform information of the micro switch 6 to the washing machine controller, the gear cam 22, the switch toggle rod 5, the micro switch 6, and the printed circuit board 7 constitute the gear control mechanism of the water distributor, while the motor 1 drives the swing arm 4 to swing through the gear transmission mechanism 2, the gear cam 22, the switch toggle rod 5 control the ON time waveform information of the micro switch 6 to the washing machine controller through the printed circuit board 7, and the start and stop of the motor 1 is controlled by the recognition function of the washing machine controller, so that the water inlet nozzle is fixed at the desired position through the positioning fork 42 at the front end of the swing arm 4, so as to achieve the purpose of control.

[0023] Furthermore, a compression spring 8 is provided on the switch toggle lever 5 on the opposite side of the gear toggle tip 51, and the other end of the compression spring 8 is embedded in a compression spring groove 91 provided on the housing 9. Under the action of the compression spring 8, the gear toggle tip 51 is always in contact with the circumferential surface of the gear cam 22; the switch toggle protrusion 52 is provided at the front end of the switch toggle lever 5, and the tail end of the switch toggle lever 5 is sleeved on the toggle lever positioning column 92, so that the switch toggle lever 5 can touch the micro switch 6 or stay away from the micro switch 6 under the action of the compression spring 8 and the gear 221 on the gear cam 22.

[0024] Furthermore, the gear transmission mechanism 2 includes an output gear 23 arranged on the output shaft of the motor 1, and a first-level large gear 24 meshingly connected to the output gear 23 is provided on the side of the output gear 23, and a first-level small gear 25 coaxially arranged is provided on the first-level large gear 24; a second-level large gear 27 meshingly connected to the first-level small gear 25 is provided on the second-level positioning shaft 26 above the output shaft of the motor 1, and a second-level small gear 28 coaxially arranged is provided on the second-level large gear 27; the second-level small gear 28 is meshingly connected to the gear gear 21 beside it; wherein the first-level large gear 24 and the first-level small gear 25 are integrally formed and sleeved on the first-level positioning shaft 29, the second-level large gear 27 and the second-level small gear 28 are integrally formed and sleeved on the second-level positioning shaft 26, the gear gear 21, the gear cam 22 and the central axes of the two are integrally formed, and the central axes of the gear gear 21 and the gear cam 22 are the same as the axial center line of the first-level positioning shaft 29. The motor 1 adopts a 500 rpm synchronous permanent magnet motor, which is decelerated by the gear transmission mechanism 2, and drives the gear cam 22 and the swing arm cam 3 to realize the transmission of the time waveform information for controlling the position of the swing arm 4 and controlling the ON of the micro switch 6. After the motor 1 is started, the output gear 23 drives the primary large gear 24 and the primary small gear 25 to rotate, the primary small gear 25 drives the secondary large gear 27 and the secondary small gear 28 to rotate, the secondary small gear 28 drives the gear gear 21 to rotate, and drives the swing arm cam 3 to rotate through the central axis of the gear gear 21, and the swing arm cam 3 drives the swing arm 4 to swing to drive the water inlet nozzle to be in the set washing machine feeding box position.

[0025] Furthermore, a swing arm trajectory groove 31 is provided at the bottom of the swing arm cam 3, a swing arm trajectory column 41 of the swing arm 4 is embedded in the swing arm trajectory groove 31 and one end of the swing arm 4 is fixed on the shell 9. The swing trajectory column 41 can move along the trajectory extension direction of the swing arm trajectory groove 31 during the rotation of the swing arm cam 3, thereby driving the positioning fork 42 at the front end of the swing arm 4 to swing to adjust the position of the water inlet nozzle.

[0026] Furthermore, the shell 9 includes an upper cover 93 and a lower cover 94 connected by screws, and the motor 1 is fixed to the lower cover 94 by screws. The protective plate 95 on the upper cover 93 can cover the printed circuit board 7 fixed on the lower cover 94, and the side positioning strips of the protective plate 95 can be inserted along the positioning grooves provided on the lower cover 94 to position the relative positions of the upper cover 93 and the lower cover 94.

[0027] After the water distributor of the present invention is powered on and used, the motor 1 is started, the output gear 23 drives the primary large gear 24 and the primary small gear 25 to rotate, the primary small gear 25 drives the secondary large gear 27 and the secondary small gear 28 to rotate, the secondary small gear 28 drives the gear gear 21 to rotate, and the swing arm cam 3 is driven to rotate through the central axis of the gear gear 21, and the swing track column 41 of the swing arm 4 can move along the track extension direction of the swing arm track groove 31 during the rotation of the swing arm cam 3; while the motor 1 drives the swing arm 4 to swing through the gear transmission mechanism 2, the ON time waveform information of the gear cam 22 and the switch toggle rod 5 controlling the micro switch 6 is transmitted to the washing machine controller through the printed circuit board 7, and the start and stop of the motor 1 is controlled through the recognition function of the washing machine controller, so that the water inlet nozzle is fixed at the set washing machine feeding box position through the positioning fork 42 at the front end of the swing arm 4, so as to achieve the control purpose.

[0028] The water distributor of the present invention can realize the water inlet sequence and water inlet time of various parts of the washing machine feed box through a single-channel structure, and can realize this by moving the water inlet nozzle above the feed box to the required position through the single-channel structure. The whole is equivalent to a robot moving the water inlet nozzle above the feed box to the required position, thereby realizing single-structure management of water inlet, and the water inlet nozzle moves to different positions to supply water according to the instructions of the washing machine program, which greatly simplifies the structure, saves costs and can save a large amount of raw materials.

[0029] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention; any technology not involved in the present invention can be realized by existing technologies.

Claims

1. A water distributor for a drum washing machine, comprising a motor (1), characterized in that: The motor (1) drives the swing arm cam (3) to rotate via the gear transmission mechanism (2), and the swing arm cam (3) drives the swing arm (4) linked thereto to control the positioning of the water inlet nozzle; the gear transmission mechanism (2) comprises a gear gear (21), a gear cam (22) coaxially arranged therewith is provided on the gear gear (21), a plurality of gears (221) corresponding to the water inlet sequence and water inlet time of various parts of the washing machine feeding box are provided on the circumference of the gear cam (22), and a gear cam (22) cooperating therewith is provided on the side of the gear cam (22). A switch toggle lever (5) is provided with a gear toggle tip (51) corresponding to the gear position (221) and a switch toggle convex point (52) corresponding to the micro switch (6); the micro switch (6) is mounted on a printed circuit board (7) and the two are electrically connected; the printed circuit board (7) is capable of transmitting ON time waveform information of the micro switch (6) to a washing machine controller; the gear cam (22), the switch toggle lever (5), the micro switch (6) and the printed circuit board (7) constitute a gear control mechanism of the water distributor.

2. The water distributor for a drum washing machine according to claim 1, characterized in that: The central axes of the gear cam (22) and the gear gear (21) are fixedly connected to the rotation axis of the swing arm cam (3), and the swing arm cam (3) can rotate along with the gear cam (22) and the gear gear (21).

3. The water distributor for a drum washing machine according to claim 1, characterized in that: A compression spring (8) is provided on the switch toggle lever (5) on the side opposite to the gear toggle tip (51), and the other end of the compression spring (8) is embedded in a compression spring groove (91) provided on the housing (9). Under the action of the compression spring (8), the gear toggle tip (51) always fits the circumferential surface of the gear cam (22).

4. The water distributor for a drum washing machine according to claim 1 or 3, characterized in that: The switch toggle protrusion (52) is arranged at the front end of the switch toggle rod (5), and the rear end of the switch toggle rod (5) is sleeved on the toggle rod positioning column (92), so that the switch toggle rod (5) can touch the micro switch (6) or move away from the micro switch (6) under the action of the compression spring (8) and the gear position (221) on the gear position cam (22).

5. The water distributor for a drum washing machine according to claim 1, characterized in that: The motor (1) is connected to a printed circuit board (7) via a line and is controlled by a washing machine controller via the printed circuit board (7).

6. The water distributor for a drum washing machine according to claim 1, characterized in that: The gear positions (221) are arranged to protrude from the circumference of the gear position cam (22), and four gear positions (221) are arranged on the circumference of the gear position cam (22).

7. The water distributor for a drum washing machine according to claim 1 or 2, characterized in that: The gear transmission mechanism (2) comprises an output gear (23) arranged on the output shaft of the motor (1); a primary large gear (24) meshingly connected to the output gear (23) is arranged beside the output gear (23); a primary small gear (25) coaxially arranged on the primary large gear (24); a secondary large gear (27) meshingly connected to the primary small gear (25) is arranged on the secondary positioning shaft (26) above the output shaft of the motor (1); a secondary small gear (28) coaxially arranged on the secondary large gear (27); and The motor (1) is meshed and connected with the gear gear (21) next to it; after the motor (1) is started, the output gear (23) drives the primary large gear (24) and the primary small gear (25) to rotate, the primary small gear (25) drives the secondary large gear (27) and the secondary small gear (28) to rotate, the secondary small gear (28) drives the gear gear (21) to rotate, and the central axis of the gear gear (21) drives the swing arm cam (3) to rotate, and the swing arm cam (3) drives the swing arm (4) to swing so as to drive the water inlet nozzle to be located at the set washing machine feeding box position.

8. The water distributor for a drum washing machine according to claim 7, characterized in that: The first-stage large gear (24) and the first-stage small gear (25) are integrally formed and sleeved on the first-stage positioning shaft (29); the second-stage large gear (27) and the second-stage small gear (28) are integrally formed and sleeved on the second-stage positioning shaft (26); the gear position gear (21), the gear position cam (22) and the central axes of the gear position gear (21) and the gear position cam (22) are integrally formed and the central axes of the gear position gear (21) and the gear position cam (22) are the same as the axis of the first-stage positioning shaft (29).

9. The water distributor for a drum washing machine according to claim 1, characterized in that: A swing arm track groove (31) is provided at the bottom of the swing arm cam (3), a swing track column (41) of the swing arm (4) is embedded in the swing arm track groove (31), and one end of the swing arm (4) is fixed to the housing (9). The swing track column (41) can move along the track extension direction of the swing arm track groove (31) during the rotation of the swing arm cam (3), thereby driving the positioning fork (42) at the front end of the swing arm (4) to swing to adjust the position of the water inlet nozzle.

10. The water distributor for a drum washing machine according to claim 3, characterized in that: The housing (9) comprises an upper cover (93) and a lower cover (94); a protective plate (95) on the upper cover (93) is capable of shielding a printed circuit board (7) fixed on the lower cover (94); and a side positioning strip of the protective plate (95) is capable of being inserted along a positioning groove provided on the lower cover (94) to position the relative positions of the upper cover (93) and the lower cover (94).

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