WO2017185891A1

WO2017185891A1 - Spray arm assembly for dishwasher, and dishwasher having same

Info

Publication number: WO2017185891A1
Application number: PCT/CN2017/076497
Authority: WO
Inventors: 黎铭峰
Original assignee: 佛山市顺德区美的洗涤电器制造有限公司; 美的集团股份有限公司
Priority date: 2016-04-29
Filing date: 2017-03-13
Publication date: 2017-11-02
Also published as: CN105942951B; CN105942951A

Abstract

A spray arm assembly (100B) for a dishwasher, and a dishwasher having same. The spray arm assembly (100B) comprises: a spray arm base (10B); a spray arm main body (20B), said spray arm main body (20B) rotating about the central axis of the spray arm base (10B); a first spray arm auxiliary body (30B), said first spray arm auxiliary body (30B) rotating about the central axis of a first spray arm auxiliary body spindle (33B); a second spray arm auxiliary body (40B), said second spray arm auxiliary body (40B) rotating about the central axis of a second spray arm auxiliary body spindle (42B), and the second spray arm auxiliary body (40B) comprising two spray arms that are symmetrically arranged, the path of movement of first spray holes and of second spray holes overlapping to create a washing area that is substantially square-shaped; and a gear assembly (50B), said gear assembly (50B) driving the spray arm main body (20B) and the spray arm auxiliary body to rotate.

Description

Spray arm assembly for dishwasher and dishwasher having same

Technical field

The present invention relates to the field of dishwasher technology, and more particularly to a spray arm assembly for a dishwasher and a dishwasher having the same.

Background technique

Cabinet dishwashers can be divided into 60 and 45 depending on the width and width. The former is about 60 cm wide and the latter is about 45 cm wide. When the dishwasher is working, it is sprayed by several internal spray arms, and the tableware is continuously covered and sprayed, and combined with the reflection, splashing and flowing of water, the tableware is cleaned. However, the 60-cabin dishwasher of the related art has a shape close to a square in its inner bowl basket shape due to its width and depth dimension, and the general spray arm spray area is circular, so that the bowl basket area is The phenomenon of poor washing occurred at the four corner positions, and even the dead zone of washing was formed, which seriously affected the washing effect of the dishwasher.

Summary of the invention

The present invention aims to solve at least one of the above technical problems to some extent. To this end, the present invention provides a spray arm assembly for a dishwasher, which has a simple structure, reliable connection of various components, can form a square, no dead angle washing area, good washing effect, high washing efficiency, and user Experience is good.

The invention also proposes a dishwasher having the above described spray arm assembly for a dishwasher.

A spray arm assembly for a dishwasher according to an embodiment of the first aspect of the present invention includes: a spray arm seat defining a water flow passage, one end of the spray arm seat being provided to communicate with the water flow passage a water inlet, the other end of the spray arm seat is provided with a first water outlet communicating with the water flow passage; a spray arm body, the spray arm body is disposed at the other end of the spray arm seat and around the spray Rotating a central axis of the arm seat, the spray arm body defining a first inner cavity that is in communication with the first water outlet, the spray arm body including a main wing on both sides of a central axis of the spray arm seat and An aileron, the main wing and the aileron are respectively provided with a second water outlet and a third water outlet which are electrically connected to the first inner cavity; a first spray arm auxiliary body, the first spray arm auxiliary body Provided on the spray arm body, the first spray arm sub-body defines a second inner cavity that is electrically connected to the second water discharge port, and the first spray arm auxiliary body is provided with a first spray arm pair a body rotating shaft and a first injection hole that is electrically connected to the second inner cavity, the first spray arm auxiliary body is wound around the first spray arm auxiliary body The axis of the heart is rotatable; the second spray arm sub-body is disposed on the spray arm body, and the second spray arm sub-body defines a first conduit that is electrically connected to the third water outlet a third inner cavity, the second spray arm sub-body is provided with a second spray arm auxiliary body rotating shaft and a second injection hole that is electrically connected to the second inner cavity, and the second spray arm auxiliary body surrounds the first The central axis of the rotating shaft of the second spray arm auxiliary body is rotatable, and the second spray arm auxiliary body comprises two spray arms symmetrically arranged on both sides of the rotating shaft of the second spray arm auxiliary body, and the two spray arms respectively Providing the second injection hole, the first spray The movement track of the perforation and the second injection hole superimposes to define a substantially square washing area; a gear assembly, the gear assembly and the spray arm body, the first spray arm sub-body and the second spray The arm pairs are coupled to drive the spray arm body and the spray arm sub-body to rotate.

According to the spray arm assembly for a dishwasher according to an embodiment of the present invention, the rotation and revolving of the first spray arm auxiliary body and the second spray arm auxiliary body can be realized by providing the gear assembly, and the two spray arm sets of the spray arm assembly The superposition of the washing areas of the injection holes on the body can form a square, dead corner washing area. The structure of the spray arm assembly is simple, the components are connected reliably, the assembly and disassembly are convenient, the square washing area can be realized, the washing effect is good, and the washing efficiency is improved. High, user experience is good.

In addition, the spray arm assembly for a dishwasher according to an embodiment of the present invention may further have the following additional technical features:

According to an embodiment of the invention, the water flow passage extends in an axial direction of the spray arm seat, and the first water discharge port is provided on a side wall of the other end of the spray arm seat.

According to an embodiment of the present invention, the method further includes: a first sliding ring, the spray arm seat is provided with a first sliding matching groove, and the first sliding ring is rotatably sleeved on the first sliding matching groove The spray arm body is provided with a first through hole, and an outer circumference of the first through hole extends downward and is connected to the first sliding ring.

According to an embodiment of the present invention, the method further includes: a second sliding ring, the spray arm body is provided with a first positioning shaft communicating with the second water outlet, and the first positioning shaft is provided with a second sliding The second sliding ring is rotatably sleeved on the second sliding engagement groove, and one end of the rotating shaft of the first spray arm auxiliary body is provided with a second through hole, and the outer circumference of the second through hole Extending downwardly and connected to the second sliding ring, the gear assembly is connected to the second sliding ring; the third sliding ring is provided with the third water outlet communicating with the third water outlet a second positioning shaft, wherein the second positioning shaft is provided with a third sliding engagement groove, the third sliding ring is rotatably sleeved on the third sliding engagement groove, and the second spray arm auxiliary body is rotated One end is provided with a third through hole, and an outer circumference of the third through hole extends downward and is connected to the third sliding ring, and the gear assembly is connected to the third sliding ring.

According to an embodiment of the present invention, the gear assembly includes: a sun gear, the sun gear is provided with a positioning groove, and the other end of the spray arm seat is provided with a fitting portion, the engaging portion and the first sliding ring Connected, the mating portion extends into the positioning slot through the first through hole and is connected to the sun gear; the first gear set, the first gear set meshes with the sun gear and the first Two slip rings are coupled for actuation by the second slip ring; a second gear set that meshes with the sun gear and is coupled to the third slip ring for actuation by the third slip ring.

According to an embodiment of the invention, the number of gears of the first gear set is an odd number, and the number of gears of the second gear set is an even number.

According to an embodiment of the invention, the first gear set includes a first planetary gear located outside the spray arm body, the first planetary gear is coupled to the second slip ring and is driven by the second slide Ring drive, the first planetary gear is driven by the sun gear; the second gear set includes a second planetary gear located outside the spray arm body, and the second planetary gear is coupled to the third slip ring And driven by the third slip ring, the second planetary gear and the center gear drive.

According to an embodiment of the present invention, further comprising a first transmission gear and a second transmission gear, the first transmission gear meshing with the first planetary gear and the sun gear, the second transmission gear and the The second planetary gear meshes with the sun gear.

According to an embodiment of the invention, the centers of the sun gear, the first planetary gear, the second planetary gear, the first transmission gear and the second transmission gear are located on the same straight line.

According to an embodiment of the invention, the gear ratio R of the sun gear and the first transmission gear is an even number, and the plurality of the first transmission gears are driven at a constant speed.

According to an embodiment of the present invention, a ratio of an index circle radius R1 of the sun gear to an index circle radius R21 of the first gear is R, and a revolution trajectory radius of the first gear is the (15) times the radius of the indexing circle of a transmission gear R21.

According to an embodiment of the invention, the gear ratio of the sun gear to the second transmission gear is 2:1, and the plurality of the second transmission gears are driven at a constant speed.

According to an embodiment of the present invention, the first spray arm sub-body rotates in the same direction as the revolution, and the rotation speed ratio of the rotation and the revolution is (R+1):1.

According to an embodiment of the present invention, the first spray arm sub-body is provided with a plurality of center collinear first injection holes, and the first injection holes are rotated and rotated by a phase difference angle of the moving trajectory. It is equal to 1/R of the phase difference angle between the two first injection holes and the first spray arm auxiliary body connecting line.

According to an embodiment of the invention, the injection trajectory of the first injection hole satisfies a parametric equation: x=A*cos(ang)+B*cos[(R+1)*ang], y=A*sin( Ang)+B*sin[(R+1)*ang], where ang is the angle at which the body of the spray arm is rotated, 0°<ang<360°, and A is the axis of rotation of the first spray arm The distance from the central axis of the spray arm seat, B is the distance from the first injection hole to the rotation axis of the first spray arm auxiliary body.

According to an embodiment of the present invention, the first spray arm auxiliary body includes a long arm and a short arm on both sides of a central axis of the rotating shaft of the first spray arm auxiliary body, and the long arm and the short arm respectively The first injection hole is provided.

According to an embodiment of the present invention, a phase difference between a movement path of the first injection hole on the long arm and the first injection hole on the short arm is the long arm and the short arm The phase difference between 1/R.

According to an embodiment of the invention, the rotation of the second spray arm sub-body is opposite to the revolution direction, and the rotation speed ratio of the rotation and the revolution is 1:1.

According to an embodiment of the present invention, the second spray arm sub-body is provided with a plurality of the second injection holes of the center collinear, and the second injection hole is at a phase difference angle of the rotation and the revolution movement trajectory. It is equal to 1/2 of the phase difference angle between the two second injection holes and the second spray arm sub-shaft connection line.

According to an embodiment of the invention, the injection trajectory of the second injection hole satisfies a parametric equation: X=C*cos(ang)+D*cos(ang), y=C*sin(ang)-D*sin(ang), where ang is the angle at which the body of the spray arm is rotated, 0°<ang< 360°, C is the distance from the second spray arm sub-body shaft to the central axis of the spray arm seat, and D is the distance from the second injection hole to the second spray arm auxiliary body shaft.

According to an embodiment of the invention, the phase difference of the trajectory of the second injection hole on the two spray arms is 1/2 of the phase difference between the two spray arms.

A dishwasher according to an embodiment of the second aspect of the present invention includes the spray arm assembly for a dishwasher according to the above embodiment.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a perspective view of a spray arm assembly for a dishwasher in accordance with an embodiment of the present invention;

Figure 2 is a partial cross-sectional view of the structure shown in Figure 1;

Figure 3 is an exploded view of the structure shown in Figure 1;

Figure 4 is a schematic view showing the structure of the spray arm holder of the structure shown in Figure 1;

Figure 5 is a schematic view showing the structure of the spray arm body of the structure shown in Figure 1;

Figure 6 is a schematic view showing the structure of the first spray arm auxiliary body of the structure shown in Figure 1;

Figure 7 is a schematic view showing the structure of the second spray arm auxiliary body of the structure shown in Figure 1;

Figure 8 is a schematic view showing the structure of the first sliding ring, the second sliding ring and the third sliding ring of the structure shown in Figure 1;

Figure 9 is a structural schematic view showing the meshing relationship of the gear assembly shown in Figure 1;

Figure 10 is a simplified schematic view of the structure shown in Figure 1;

Figure 11 is a schematic view of the washing area of the long arm of the first spray arm sub-body of the structure shown in Figure 1;

Figure 12 is a schematic view of the washing region of the short arm of the first spray arm sub-body of the structure shown in Figure 1;

Figure 13 is a schematic view of a washing area of a second spray arm sub-body of the structure shown in Figure 1;

Figure 14 is a schematic view showing the superimposed washing regions of the first spray arm sub-body and the second spray arm auxiliary body of the structure shown in Figure 1;

Figure 15 is a perspective view of a spray arm assembly for a dishwasher in accordance with an embodiment of the present invention;

Figure 16 is a partial cross-sectional view of the structure shown in Figure 15;

Figure 17 is an exploded view of the structure shown in Figure 15;

Figure 18 is a schematic view showing the structure of the spray arm holder of the structure shown in Figure 15;

Figure 19 is a schematic view showing the structure of the spray arm main body of the structure shown in Figure 15;

Figure 20 is a schematic view showing the structure of the first spray arm auxiliary body of the structure shown in Figure 15;

Figure 21 is a schematic view showing the structure of the second spray arm auxiliary body of the structure shown in Figure 15;

22 is a schematic structural view of a first sliding ring, a second sliding ring, and a third sliding ring of the structure shown in FIG. 15;

Figure 23 is a schematic structural view showing the meshing relationship of the gear assembly shown in Figure 15;

Figure 24 is a simplified schematic view of the structure shown in Figure 15;

Figure 25 is a schematic illustration of the washing region of the long arm of the first spray arm sub-body of the structure shown in Figure 15;

Figure 26 is a schematic view of the washing region of the short arm of the first spray arm sub-body of the structure shown in Figure 15;

Figure 27 is a schematic illustration of the washing zone of the second spray arm sub-body of the structure shown in Figure 15;

Figure 28 is a schematic view showing the superimposed washing regions of the first spray arm sub-body and the second spray arm auxiliary body of the structure shown in Figure 15 .

Reference numeral

100B: spray arm assembly;

10B: spray arm seat; 101B: water flow passage; 102B: water inlet; 103B: first water outlet; 104B: first sliding fit groove; 11B: mating portion;

20B: spray arm body; 201B: first inner cavity; 202B: first through hole;

21B: main wing; 210B: second water outlet; 211B: first positioning shaft; 212B: second sliding engagement groove;

22B: aileron; 220B: third outlet; 221B: second positioning shaft; 222B: third sliding engagement groove;

30B: first spray arm auxiliary body; 301B: second inner cavity; 302B: first injection hole; 303B: second through hole;

31B: long arm;

32B: short arm;

33B: the first spray arm auxiliary body shaft;

40B: second spray arm auxiliary body; 401B: third inner cavity; 402B: second injection hole; 403B: third through hole;

41B: spray arm;

42B: the second spray arm auxiliary body shaft;

50B: gear assembly;

51B: center gear; 511B: positioning groove;

52B: a first gear set; 521B: a first planetary gear; 522B: a first transmission gear;

53B: second gear set; 531B: second planetary gear; 532B: second transmission gear;

61B: a first slip ring;

62B: a second slip ring;

63B: a third slip ring;

64B: Drive gear slip ring.

Detailed ways

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

A spray arm assembly 100B for a dishwasher according to an embodiment of the first aspect of the present invention will be specifically described below with reference to FIGS. 1 through 28.

As shown in FIGS. 1 to 3, a spray arm assembly 100B for a dishwasher according to an embodiment of the present invention includes a spray arm holder 10B, a spray arm main body 20B, a first spray arm auxiliary body 30B, and a second spray arm auxiliary body. 40B and gear assembly 50B.

Specifically, the spray arm holder 10B defines a water flow passage 101B. One end of the spray arm holder 10B is provided with a water inlet 102B communicating with the water flow passage 101B, and the other end of the spray arm holder 10B is provided with a first outlet communicating with the water flow passage 101B. The nozzle body 20B is disposed at the other end of the spray arm holder 10B and rotates around the central axis of the spray arm holder 10B. The spray arm main body 20B defines a first inner chamber 201B that is electrically connected to the first water outlet 103B. The arm main body 20B includes a main wing 21B and an aileron 22B on both sides of the central axis of the spray arm holder 10B, and the main air outlet 21B and the aileron 22B are respectively provided with a second water outlet 210B and a third outlet which are electrically connected to the first inner chamber 201B. Nozzle 220B.

In other words, the spray arm assembly 100B for the dishwasher is mainly composed of the spray arm holder 10B, the spray arm main body 20B, the first spray arm auxiliary body 30B, the second spray arm auxiliary body 40B, and the gear assembly 50B. Here, as shown in FIGS. 2 and 4, the spray arm holder 10B is formed in a columnar shape extending in the vertical direction (up and down direction as shown in FIG. 2), and the spray arm holder 10B defines a water flow passage 101B extending in the axial direction thereof. The first end of the spray arm holder 10B (the lower end shown in FIG. 2) is provided with a water inlet 102B that is electrically connected to the water flow passage 101B, and the second end of the spray arm holder 10B (the upper end shown in FIG. 2) is provided. The first water outlet 103B that is electrically connected to the water flow channel 101B.

As shown in FIGS. 2 and 5, the spray arm main body 20B forms a long plate member disposed on a horizontal surface, and the spray arm main body 20B is coupled to the second end of the spray arm holder 10B and rotatable about the central axis of the spray arm holder 10B. The inside of the spray arm main body 20B defines a first inner cavity 201B extending along the longitudinal direction thereof and communicating with the water flow passage 101B. The side of the spray arm main body 20B on the central axis of the spray arm base 10B is the main wing 21B, and the spray arm The other side of the main body 20B on the central axis of the spray arm holder 10B is an aileron 22B, and the end of the main wing 21B remote from the central axis of the spray arm holder 10B is provided with a second water outlet 210B that is electrically connected to the first inner chamber 201B. A third water outlet 220B that is electrically connected to the second inner cavity 301B is disposed at one end of the aileron 22B away from the central axis of the spray arm seat 10B.

Further, the first spray arm auxiliary body 30B is disposed on the spray arm main body 20B, and the first spray arm auxiliary body 30B defines a second inner cavity 301B that is electrically connected to the second water discharge port 210B, and the first spray arm auxiliary body 30B The first spray arm sub-body shaft 33B and the first spray hole 302B that is electrically connected to the second inner chamber 301B are disposed, and the first spray arm auxiliary body 30B is rotatable about a central axis of the first spray arm auxiliary body shaft 33B. The second spray arm auxiliary body 40B is disposed on the spray arm main body 20B, and the second spray arm auxiliary body 40B defines the third output. The third inner cavity 401B is opened by the nozzle 220B, and the second spray arm sub-body 40B is provided with a second spray arm auxiliary body shaft 42B and a second spray hole 402B which is electrically connected to the second inner cavity 301B, and the second spray arm pair The body 40B is rotatable about a central axis of the second spray arm auxiliary body rotating shaft 42B, and the second spray arm auxiliary body 40B includes two spray arms symmetrically arranged on both sides of the second spray arm auxiliary body rotating shaft 42B. The second injection holes 402B are respectively provided, and the movement trajectories of the first injection holes 302B and the second injection holes 402B superimpose to define a substantially square washing area, the gear assembly 50B and the spray arm main body 20B, the first spray arm auxiliary body 30B and The second spray arm sub-body 40B is coupled to drive the spray arm main body 20B and the spray arm auxiliary body to rotate.

Specifically, as shown in FIGS. 2 and 6, the first spray arm sub-body 30B is rotatably provided on the main wing 21B of the spray arm main body 20B, and the first spray arm auxiliary body 30B is formed in a strip shape arranged on a horizontal surface. The lower surface of the first spray arm sub-body 30B is provided with a first spray arm auxiliary body shaft 33B connected to the main wing 21B, and the first spray arm auxiliary body 30B is rotatable about a central axis of the first spray arm auxiliary body rotating shaft 33B. The spray arm auxiliary body 30B defines a second inner cavity 301B extending along the longitudinal direction thereof and communicating with the second water outlet 210B. The upper surface of the second spray arm auxiliary body 40B is provided with a plurality of spaced apart intervals along the length thereof. The first injection hole 302B that is electrically connected to the second inner cavity 301B. The second spray arm sub-body 40B is rotatably provided on the aileron 22B of the spray arm main body 20B.

As shown in FIGS. 2 and 7, the second spray arm sub-body 40B is formed substantially in an elongated shape disposed on a horizontal surface, and the lower surface of the second spray arm auxiliary body 40B is provided with a second spray arm auxiliary body rotating shaft 42B, and second The spray arm auxiliary body 40B is rotatable about a central axis of the second spray arm auxiliary body rotating shaft 42B, and the second spray arm auxiliary body 40B defines a third internal cavity 401B extending along the longitudinal direction thereof and communicating with the third water outlet 220B. The upper surface of the second spray arm sub-body 40B is provided with a plurality of second spray holes 402B spaced apart in the longitudinal direction thereof and electrically connected to the third inner chamber 401B. Specifically, the second spray arm sub-body 40B includes two spray arms disposed on both sides of the central axis of the second spray arm auxiliary body rotating shaft 42B, and each of the spray arms is provided with a plurality of spray arms arranged at intervals.

When the spray arm assembly 100B is in operation, the wash water sequentially enters the water flow passage 101B of the spray arm holder 10B, the first inner chamber 201B of the spray arm main body 20B from the water inlet 102B of the spray arm holder 10B, and then from the second water outlet 210B and the first The three water outlets 220B flow out of the spray arm main body 20B, and enter the second inner cavity 301B of the first spray arm auxiliary body 30B and the third inner cavity 401B of the second spray arm auxiliary body 40B in two ways, and finally from the first spray arm. The plurality of first injection holes 302B on the sub-body 30B and the plurality of second injection holes 402B on the second spray arm sub-body 40B are ejected, and under the opposing force of the ejected wash water, the first spray arm pair The body 30B and the second spray arm sub-body 40B are respectively rotated about the central axis of the rotating shaft at their corresponding positions, and at the same time, under the transmission of the gear assembly 50B, the spray arm main body 20B is rotated about the central axis of the spray arm holder 10B. The washing area of the washing water sprayed from the first injection hole 302B and the second injection hole 402B is superimposed to form a substantially square shape.

Thus, according to the spray arm assembly 100B for a dishwasher according to an embodiment of the present invention, by providing the gear assembly 50B, the rotation and revolution of the first spray arm sub-body 30B and the second spray arm auxiliary body 40B can be realized. The superposition of the washing areas of the injection holes on the two spray arm sub-assemblies of the assembly 100B can form a square, dead-angle washing area. The spray arm assembly 100B has a simple structure, reliable connection of components, convenient assembly and disassembly, and can realize a square shape. The washing area has good washing effect, high washing efficiency and good user experience.

As shown in Figures 2 and 4, in some embodiments of the present invention, the water flow channel 101B is along the spray arm holder 10B. Extending in the axial direction, the first water outlet 103B is provided on the side wall of the other end of the spray arm holder 10B. Referring to Fig. 1, the outer side wall of the first end (the upper end shown in Fig. 2) of the spray arm holder 10B is provided with a first water outlet 103B which is electrically connected to the water flow passage 101B, and the first water outlet 103B is along the spray arm seat 10B. The side wall extends circumferentially, the spray arm main body 20B is connected to the first end of the spray arm holder 10B, and the first water discharge port 103B of the spray arm holder 10B is electrically connected to the first inner chamber 201B of the spray arm main body 20B. Thus, by providing the first water outlet 103B on the side wall of the spray arm holder 10B, a large inflow of water per unit time can be ensured, thereby providing a sufficient amount of washing water for the dishwasher, which greatly improves the amount of washing water. Washing efficiency.

The spray arm assembly 100B further includes a first sliding ring 61B. The spray arm base 10B is provided with a first sliding engagement groove 104B. The first sliding ring 61B is rotatably sleeved on the first sliding engagement groove 104B. The first through hole 202B is provided in the 20B, and the outer circumference of the first through hole 202B extends downward and is connected to the first sliding ring 61B.

Specifically, as shown in FIG. 2, the outer side wall of the first end of the spray arm holder 10B (the upper end shown in FIG. 4) is provided with a first sliding engagement groove 104B that is not electrically connected to the water flow passage 101B, and the first sliding fit The groove 104B forms an annular shape extending in the circumferential direction of the spray arm holder 10B, and the first sliding engagement groove 104B is located below the first water outlet 103B, and the first sliding ring 61B is sleeved on the upper end of the spray arm holder 10B and the first sliding ring The inner ring of 61B cooperates with the first sliding engagement groove 104B on the spray arm holder 10B. The lower surface of the spray arm main body 20B is provided with a first through hole 202B that is electrically connected to the first inner cavity 201B, and the upper end of the spray arm holder 10B passes. The first through hole 202B extends into the first inner cavity 201B of the spray arm holder 10B and is engaged with the upper surface of the spray arm main body 20B, and the outer circumference of the spray arm main body 20B adjacent to the first through hole 202B is bent outward. Folded to cooperate with the first slip ring 61B.

Thus, by providing the first sliding engagement groove 104B and the first sliding ring 61B coupled thereto under the first water outlet 103B, the fixed connection of the spray arm main body 20B and the first sliding ring 61B can be realized, and the spray arm can be realized. The pivotal connection between the seat 10B and the spray arm main body 20B ensures that the spray arm main body 20B can rotate about the central axis of the spray arm seat 10B, thereby realizing the revolution of the first spray arm auxiliary body 30B and the second spray arm auxiliary body 40B. Thereby a square, dead zone washing zone of the spray arm assembly 100B is achieved.

As shown in Figures 2 and 8, the spray arm assembly 100B further includes a second slip ring 62B and a third slip ring 63B. Specifically, the spray arm main body 20B is provided with a first positioning shaft 211B that communicates with the second water outlet 210B. The first positioning shaft 211B is provided with a second sliding engagement groove 212B, and the second sliding ring 62B is rotatably sleeved. On the second sliding engagement groove 212B, one end of the first spray arm auxiliary body shaft 33B is provided with a second through hole 303B, and the outer circumference of the second through hole 303B extends downward and is connected to the second sliding ring 62B, the gear assembly 50B It is connected to the second slip ring 62B. Further, the spray arm main body 20B is provided with a second positioning shaft 221B communicating with the third water outlet 220B, and the second positioning shaft 221B is provided with a third sliding engagement groove 222B, and the third sliding ring 63B is rotatably sleeved on the second sliding shaft 63B. The third sliding engagement groove 222B is provided with a third through hole 403B at one end of the second spray arm auxiliary body rotating shaft 42B. The outer circumference of the third through hole 403B extends downward and is connected to the third sliding ring 63B. The gear assembly 50B and The third slip ring 63B is connected.

That is, the spray arm assembly 100B for the dishwasher is mainly composed of the spray arm holder 10B, the spray arm main body 20B, the first spray arm auxiliary body 30B, the second spray arm auxiliary body 40B, the gear assembly 50B, and the first slide. Ring 61B, second slip ring 62B and third slide Ring 63B is composed. Wherein, the side wall of the upper end of the spray arm holder 10B is provided with a first sliding engagement groove 104B extending along the circumferential direction thereof, and the upper surfaces of both ends of the spray arm main body 20B are respectively provided with the first extending along the axial direction of the spray arm holder 10B. The positioning shaft 211B and the second positioning shaft 221B, the side wall of the first positioning shaft 211B is provided with a second sliding engagement groove 212B extending along the circumferential direction thereof, and the side wall of the second positioning shaft 221B is provided with a section extending along the circumferential direction thereof. The first sliding ring 61B is sleeved on the spray arm holder 10B, and the inner ring of the first sliding ring 61B is pivotally engaged with the first sliding engagement groove 104B of the spray arm holder 10B. The second sliding ring is engaged. 62B is sleeved on the first positioning shaft 211B of the spray arm main body 20B and the inner ring of the second sliding ring 62B is pivotally engaged with the second sliding engagement groove 212B on the first positioning shaft 211B, and the third sliding ring 63B is sleeved. The inner ring of the third sliding ring 63B is disposed on the second positioning shaft 221B of the spray arm main body 20B and the third sliding engagement groove 222B on the second positioning shaft 221B is pivotally engaged.

One end of the first spray arm auxiliary body shaft 33B is provided with a second through hole 303B that is electrically connected to the second inner cavity 301B, and one end of the second spray arm auxiliary body rotating shaft 42B is provided to be electrically connected to the third inner cavity 401B. The third through hole 403B, the first positioning shaft 211B on the spray arm main body 20B passes through the second through hole 303B and protrudes into the second through hole 303B of the first spray arm auxiliary body shaft 33B, and the first positioning shaft 211B The outer ring of the second sliding ring 62B is fixedly coupled to the first spray arm auxiliary body rotating shaft 33B, so that the first spray arm auxiliary body 30B and the second sliding ring 62B can be rotated about the central axis of the first positioning shaft 211B, and the spray arm main body 20B The upper second positioning shaft 221B passes through the third through hole 403B, protrudes into the third through hole 403B of the second spray arm auxiliary body rotating shaft 42B, and the outer ring and the second outer ring of the third sliding ring 63B on the second positioning shaft 221B The boom secondary shaft 42B is fixedly coupled such that the second boom sub-body 40B and the third slip ring 63B are rotatable about a central axis of the second positioning shaft 221B.

Specifically, the outer circumference of the spray arm main body 20B adjacent to the first through hole 202B extends downward and is bent to be connected to the first slide ring 61B, and the outer circumference of the first spray arm auxiliary body 30B adjacent to the second through hole 303B. Extending downwardly and bent to be coupled to the second sliding ring 62B, the outer circumference of the second spray arm sub-body 40B adjacent to the third through hole 403B extends downward and is bent to be engaged with the third sliding ring 63B. Connected. The gear assembly 50B is coupled to the first slip ring 61B, the second slip ring 62B, and the third slide ring 63B, respectively, and when the spray arm assembly 100B is in operation, the first spray arm sub-body 30B and the second spray arm auxiliary body 40B are ejected. The reverse driving of the washing water starts to rotate, and then through the transmission of the gear assembly 50B, the purpose of driving the spray arm main body 20B to rotate about the central axis of the spray arm holder 10B can be achieved.

Thereby, the second sliding engagement groove 212B and the third sliding engagement groove that are engaged with the second slide ring 62B and the third slide ring 63B are provided on the first positioning shaft 211B and the second positioning shaft 221B on the spray arm main body 20B. 222B, the pivotal connection between the first spray arm sub-body 30B and the first positioning shaft 211B, the second spray arm auxiliary body 40B and the second positioning shaft 221B can be realized, and the first spray arm auxiliary body 30B and the second spray arm can be ensured. The secondary body 40B is rotatable about its corresponding central axis of rotation to effect rotation of the first spray arm sub-body 30B and the second spray arm sub-body 40B, thereby achieving a square, dead-angled wash area of the spray arm assembly 100B.

Among them, the gear assembly 50B includes a sun gear 51B, a first gear set 52B, and a second gear set 53B. Specifically, the sun gear 51B is provided with a positioning groove 511B, and the other end of the spray arm seat 10B is provided with a fitting portion 11B, and the fitting portion 11B is firstly slipped. The moving ring 61B is connected, and the engaging portion 11B extends into the positioning groove 511B through the first through hole 202B to be connected with the sun gear 51B. The first gear set 52B is meshed with the sun gear 51B and connected to the second sliding ring 62B for the second sliding. The ring 62B is driven, and the second gear set 53B is meshed with the sun gear 51B and connected to the third slip ring 63B to be driven by the third slip ring 63B.

In other words, the gear assembly 50B of the spray arm assembly 100B is mainly composed of a sun gear 51B, a first gear set 52B, and a second gear set 53B, wherein the first end of the spray arm mount 10B (upper end as shown in FIG. 2) extends The upper surface of the spray arm main body 20B is sleeved on the upper end of the spray arm base 10B and is coupled to the upper end of the spray arm base 10B. Specifically, the central portion of the central gear 51B is provided with a positioning groove 511B, and the spray arm seat 10B. The first end of the spray arm base 10B is extended from the upper surface of the spray arm main body 20B and is engaged with the positioning groove 511B of the sun gear 51B, and the first end of the spray arm base 10B is provided. The sliding engagement groove 104B is pivotally coupled to the first slide ring 61B located below the spray arm body 20B. For example, the sun gear 51B is mounted on the top of the spray arm holder 10B, and both can be fixedly connected by the spline fitting portion 11B.

The first gear set 52B is disposed below the first spray arm sub-body 30B and is fixedly coupled to the second slide ring 62B on the first spray arm auxiliary body 30B, and the first spray arm auxiliary body 30B is wound around the first spray arm main body 20B. When the central axis of the positioning shaft 211B rotates, the first gear set 52B can be rotated, and the second gear set 53B is disposed below the second spray arm auxiliary body 40B and with the third sliding ring 63B on the second spray arm auxiliary body 40B. When the second spray arm sub-body 40B rotates about the central axis of the second positioning shaft 221B on the spray arm main body 20B, the second gear set 53B can be driven to rotate, and the two are simultaneously meshed with the sun gear 51B, and then coupled. The sun gear 51B is fixedly disposed with respect to the horizontal plane such that the first gear set 52B and the second gear set 53B are respectively rotated in the circumferential direction of the sun gear 51B, thereby realizing the rotation of the spray arm main body 20B about the central axis of the spray arm holder 10B.

In some embodiments of the invention, the number of gears of the first gear set 52B is an odd number, and the number of gears of the second gear set 53B is an even number. Thus, by adjusting the number of gears and the number of gear teeth of the first gear set 52B and the second gear set 53B, the rotational speed and the rotational direction of the rotation of the first spray arm sub-body 30B and the second spray arm auxiliary body 40B can be adjusted, thereby Achieve predetermined washing efficiency.

Optionally, in accordance with an embodiment of the present invention, the first gear set 52B includes a first planet gear 521B located outside of the spray arm body 20B, the first planet gear 521B being coupled to the second slip ring 62B and by the second slip ring 62B Driven, the first planetary gear 521B is driven by the sun gear 51B; the second gear set 53B includes a second planetary gear 531B located outside the spray arm main body 20B, and the second planetary gear 531B is connected to the third slip ring 63B and is connected by the third slip ring The 63B drive, the second planetary gear 531B and the sun gear 51B are driven.

For example, the first gear set 52B is composed of a single-stage gear, such as one stage and three stages, wherein the outermost planetary gear is the first planetary gear 521B, and the first planetary gear 521B passes the second slip ring 62B and the first spray. The arm sub-body 30B is connected in one body. The second gear set 53B is composed of a double-numbered gear, for example, two and four stages, wherein the outermost one is the second planetary gear 531B, and the second planetary gear 531B passes the third sliding ring 63B and the second spray arm auxiliary body. The 40B is connected as one. Except for the first planetary gear 521B and the second planetary gear 531B, the other planetary gears are transmission gears. Spray arm body 20B As the carrier of the first planetary gear 521B and the second planetary gear 531B, with the rotation of the first planetary gear 521B and the second planetary gear 531B, the spray arm main body 20B together with the two planetary gears is wound around the central axis of the spray arm holder 10B. Revolution.

Specifically, the first planetary gear 521B is sleeved on the outer side of the second sliding ring 62B and is coupled to the second sliding ring 62B, and the first spray arm auxiliary body 30B is coupled to the outer ring of the second sliding ring 62B. The second sliding ring 62B is rotated together, and the second sliding ring 62B is sleeved on the first positioning shaft 211B of the spray arm main body 20B and can be wound around the first positioning shaft together with the first planetary gear 521B and the first spray arm auxiliary body 30B. The central axis of the 211B is rotated; the second planetary gear 531B is sleeved on the outer side of the third sliding ring 63B and is in snap-fit connection with the third sliding ring 63B, and the outer ring card of the second spray arm auxiliary body 40B and the third sliding ring 63B Connected to drive the third sliding ring 63B to rotate together, the third sliding ring 63B is sleeved on the second positioning shaft 221B on the spray arm main body 20B and can be wound together with the second planetary gear 531B and the second spray arm auxiliary body 40B. The central axis of the second positioning shaft 221B is rotated, and the sun gear 51B is disposed between the first planetary gear 521B and the second planetary gear 531B and is fixedly coupled to the first end of the spray arm holder 10B.

When the spray arm assembly 100B is in operation, the first spray arm sub-body 30B and the second spray arm auxiliary body 40B start to rotate under the reverse drive of the sprayed wash water, that is, the first spray arm auxiliary body 30B is wound around the first positioning shaft. The central axis of the 211B is rotated, and the second spray arm sub-body 40B is rotated about the central axis of the second positioning shaft 221B. At the same time, the first spray arm auxiliary body 30B and the second spray arm auxiliary body 40B respectively drive the first planetary gears 521B. The second planetary gear 531B starts to rotate, and since the first planetary gear 521B and the second planetary gear 531B are meshed with the sun gear 51B, respectively, and the sun gear 51B is fixed to the upper end of the spray arm seat 10B, the first planetary gear 521B The second planetary gear 531B is rotated in the circumferential direction of the sun gear 51B, respectively, so that the rotation of the spray arm main body 20B, that is, the revolving of the first spray arm auxiliary body 30B and the second spray arm auxiliary body 40B is achieved.

Optionally, in accordance with an embodiment of the present invention, the gear assembly 50B further includes a first transfer gear 522B and a second transfer gear 532B that meshes with the first planetary gear 521B and the sun gear 51B, the second transmission gear The 532B meshes with the second planetary gear 531B and the sun gear 51B. Specifically, as shown in FIGS. 16 and 22, the first transmission gear 522B is pivotally coupled to the main wing 21B of the spray arm main body 20B via a transmission gear slip ring 64B, and the first transmission gear 522B is provided at the center gear 51B and the A planetary gear 521B is externally meshed with the sun gear 51B and the first planetary gear 521B, respectively; the second transmission gear 532B is pivotally coupled to the aileron 22B of the spray arm main body 20B via the transmission gear slip ring 64B, the second transmission The gear 532B is disposed between the second planetary gear 531B and the sun gear 51B and is meshed with the second planetary gear 531B and the sun gear 51B, respectively. Thereby, it is possible to ensure that the spray arm assembly 100B changes the transmission ratio of the second gear set 53B of the gear assembly 50B within a certain width and size range, and can function to transmit motion and power to realize the second planetary gear 531B and the sun gear. The transmission of the 51B ensures the washing effect of the spray arm assembly 100B.

Preferably, as shown in FIG. 22, the centers of the sun gear 51B, the first planetary gear 521B, the second planetary gear 531B, the first transmission gear 522B, and the second transmission gear 532B are located on the same straight line. That is, both sides of the two sets of planetary gear sub-center gears 51B are in an external meshing relationship, since the sun gear 51B is fixed, and the gears of the first gear set 52B The number is an odd number, and the number of gears of the second gear set 53B is an even number, so that the rotation direction of the first planetary gear 521B is the same as the revolution direction, and the rotation direction of the second planetary gear 531B is opposite to the revolution direction.

Specifically, if the reverse force of the wash water sprayed by the plurality of first injection holes 302B of the first planetary gears 521B rotates clockwise around the central axis of the first positioning shaft 211B, since the sun gear 51B is not fixed The first planetary gear 521B is in an external meshing relationship with the sun gear 51B. Therefore, the spray arm main body 20B starts to rotate clockwise around the central axis of the spray arm holder 10B, and at the same time, the sun gear 51B and the second planetary gear 531B The transmission gear also rotates clockwise about its central axis. Since the second planetary gear 531B is in an external meshing relationship with the transmission gear, the second planetary gear 531B is opposite to the rotation direction of the transmission gear, that is, the second planetary gear 531B is wound around the second. The central axis of the positioning shaft 221B is rotated counterclockwise.

Furthermore, the center of the sun gear 51B, the first planetary gear 521B, the second planetary gear 531B and the transmission gear are disposed on the same straight line, which is advantageous for reducing the width dimension of the spray arm assembly 100B and increasing the washing area of the spray arm assembly 100B. The length range is such that a square, dead corner wash area is achieved.

It should be noted that the direction in which the first injection hole 302B on the first planetary gear 521B is disposed and the direction in which the second injection hole 402B on the second planetary gear 531B are disposed are related to the number of the transmission gears and the installation position. The number of transmission gears provided between one of the planetary gears 521B and the sun gear 51B is an even number, and the number of transmission gears provided between the second planetary gears 531B and the sun gear 51B is an odd number, and the first injection holes 302B and the The two injection holes 402B are disposed in opposite directions, that is, the rotation directions of the first spray arm sub-body 30B and the second spray arm auxiliary body 40B are opposite. Specifically, the number of the transmission gears and the set position can be changed according to design requirements.

In some embodiments of the present invention, the gear ratio R of the sun gear 51B and the first transmission gear 522B is an even number, and the plurality of first transmission gears 522B are driven at a constant speed. In other words, in the first gear set 52B, the first planetary gear 521B and the first transmission gear 522B are the same gear, that is, the number of teeth and the modulus of the first planetary gear 521B and the first transmission gear 522B are equal, due to the first planetary gear The gear ratio of the 521B to the first transmission gear 522B is 1:1, the gear ratio of the number of teeth of the sun gear 51B to the first transmission gear 522B is R: 1, and the gear ratio of the sun gear 51B and the first transmission gear 522B is an even number, for example, 2:1 or 4:1. At the same time, other gear drives are of constant speed. The ratio of the index circle radius R1 of the sun gear 51B to the index circle radius R21 of the first transmission gear 522B is R, and therefore, the revolution track radius of the first transfer gear 522B is the index circle radius R21 of the first transmission gear 522B. (R+1) times.

Optionally, according to an embodiment of the present invention, the gear ratio of the sun gear 51B and the second transmission gear 532B is 2:1, and the plurality of second transmission gears 532B are driven at a constant speed. The indexing circle radius R1 of the sun gear 51B and the indexing circle radius R22 of the second transmission gear 532B are 2:1. The second transmission gear 532B is respectively driven by the second planetary gear 531B and the sun gear 51B, and the second transmission gear 532B is a constant speed transmission.

For example, the sun gear 51B has 80 teeth and the second transmission gear 532B has 40 teeth. At the same time, the gear transmissions of other stages are equal speed transmission, the indexing circle radius R1 of the sun gear 51B and the indexing circle radius of the second transmission gear 532B. R22 is 2:1. Therefore, the revolution trajectory radius of the second transmission gear 532B is equal to three times the radius of the index circle R22 of the second transmission gear 532B.

The rotation speed of the first spray arm sub-body 30B is the same as the revolution direction, and the rotation speed ratio of the rotation and the revolution is (R+1):1. Specifically, the number of gears of the first gear set 52B is an odd number, and the ratio of the number of teeth of the sun gear 51B to the number of teeth of the first transmission gear 522B directly meshed with the sun gear 51B in the first gear set 52B is R, according to the first gear The transmission ratio and the meshing relationship of the group 52B show that the autorotation of the first planetary gear 521B is the same as the direction of the revolution, and the ratio of the rotation speed of the first planetary gear 521B to the revolution of the revolution is (R+1): 1, therefore, the first spray The arm sub-body 30B rotates in the same direction as the revolution, and the rotation speed ratio of the rotation and the revolution is (R+1):1.

The first spray arm sub-body 30B is provided with a plurality of central collinear first injection holes 302B, and the first injection hole 302B has a phase difference angle of the rotation and the revolving motion trajectory, which is equal to the two first injection holes 302B and 1/R of the phase difference angle between the wires of the first spray arm auxiliary body shaft 33B. Where R is an even number, such as 2 or 4.

Further, the injection trajectory of the first injection hole 302B satisfies the parameter equation: x=A*cos(ang)+B*cos[(R+1)*ang], y=A*sin(ang)+B*sin [(R+1)*ang], where ang is the angle at which the spray arm main body 20B is rotated, 0° < ang < 360°, and A is the distance from the first spray arm auxiliary body shaft 33B to the central axis of the spray arm holder 10B. B is the distance from the first injection hole 302B to the first spray arm sub-body shaft 33B.

Specifically, for the first outer injection hole 302B, the first injection hole 302B is larger than the first spray arm auxiliary body rotation shaft 33B by 1/(R+1) of the revolution radius R31 of the first planetary gear 521B, and R is an even number. The number of teeth is 2 or 4, and the motion trajectory is a long outer trochoid with R petals and R inner windings; as the position of the first injection hole 302B moves inward, the motion trajectory is entirely inwardly retracted, within R The winding is also gradually reduced; when the distance from the first injection hole 302B to the first spray arm auxiliary shaft 33B is equal to 1/(R+1) of the revolution radius R31 of the first planetary gear 521B, the inner winding just disappears and becomes Become a sharp corner.

Optionally, the first spray arm sub-body 30B includes a long arm 31B and a short arm 32B on both sides of the central axis of the first spray arm auxiliary body shaft 33B, and the first spray hole is respectively disposed on the long arm 31B and the short arm 32B. 302B. Referring to FIGS. 2 and 6, the first spray arm sub-body 30B is formed in a straight line shape, wherein the first spray arm auxiliary body 30B has a long arm 31B and a short arm 32B on both sides of the first spray arm auxiliary body rotating shaft 33B, and the long arm A plurality of spaced-apart first injection holes 302B are respectively disposed on the 31B and the short arm 32B.

The phase difference between the first irradiance hole 302B on the long arm 31B and the trajectory line of the first injection hole 302B on the short arm 32B is a phase difference 1/R between the long arm 31B and the short arm 32B. Where R is an even number of teeth such as 2 or 4. Therefore, the long arm 31B of the first spray arm sub-body 30B and the two sets of first injection holes 302B on the short arm 32B can be interwoven into a more comprehensive cover spray.

According to an embodiment of the present invention, the rotation direction of the second spray arm sub-body 40B and the second planetary gear 531B are opposite to the revolution direction, and the rotation speed ratio is 1:1. Specifically, the number of gears of the second gear set 53B is an odd number, and the ratio of the number of teeth of the sun gear 51B to the number of teeth of the second transmission gear 532B that is directly meshed with the sun gear 51B and the second gear 53B is 2, according to the second gear The transmission ratio and the meshing relationship of the group 53B show that the second planetary gear 531B is self-transmitting and revolving. The direction of rotation is the same, and the ratio of the rotation speed of the second planetary gear 531B to the revolution is 1:1. Therefore, the rotation direction of the second spray arm sub-body 40B is the same as the direction of the revolution, and the rotation speed ratio of the rotation and the revolution is 1:1.

The second spray arm sub-body 40B is provided with a plurality of central collinear second injection holes 402B, and the second injection hole 402B has a phase difference angle between the rotation and the revolving motion trajectory, which is equal to the two second injection holes 402B and The angle of the phase difference between the lines connecting the second spray arm sub-shafts 42B is 1/2. Thereby, the movement trajectory of the second injection hole 402B can form a flat elliptical line, which is advantageous for covering the dead angle of the square washing area and improving the washing effect.

Further, the injection trajectory of the second injection hole 402B satisfies the parametric equation: X=C*cos(ang)+D*cos(ang), y=C*sin(ang)-D*sin(ang), where ang The angle at which the spray arm main body 20B is rotated, 0° < ang < 360°, C is the distance from the second spray arm sub-body shaft 42B to the central axis of the spray arm holder 10B, and D is the second spray hole 402B to the second spray The distance of the arm sub-body shaft 42B.

Referring to Figures 2 and 7, the second spray arm sub-body 40B includes two spray arms 41B disposed on both sides of the central axis of the second spray arm auxiliary body shaft 42B, and each spray arm 41B is provided with a plurality of spaced apart portions. A second injection hole 402B is disposed. Wherein, for the second outer injection hole 402B, the elliptical trajectory is flat and slender; as the injection hole position moves inward, the two ends of the movement trajectory gradually adduct, and the middle gradually becomes outward, and the whole gradually becomes rounded. . Therefore, the second injection hole 402B is mainly a washing area for covering the corner position.

According to an embodiment of the invention, the phase difference of the trajectory of the second injection hole 402B on the two spray arms is 1/2 of the phase difference between the two spray arms. As shown in Fig. 2, in the present embodiment, the second spray arm sub-body 40B includes two spray arms 41B disposed in the same direction, and each spray arm 41B is formed in a straight line, and therefore, the phase between the two spray arms 41B The difference is 180°, and the phase difference of the motion trajectory of the second ejection hole 402B on the two spray arms 41B is 90°. Therefore, the second spray arm sub-body 40B can well cover the washing of the four corner positions of the square area in the dishwasher.

In summary, the spray arm assembly 100B for a dishwasher of the embodiment of the present invention has two spray arm sub-body, wherein the first spray arm auxiliary body 30B can cover most of the square except the four corners. The area includes an intermediate portion of four sides; and the second spray arm sub-body 40B is an area mainly supplementing the four corner positions, combining the washing areas of the two spray arm sub-body, the first injection hole 302B and the second injection The trajectory lines of the holes 402B are intertwined with each other, so that the coverage of the square washing area can be achieved, thereby solving the problem of poor washing of the four angular positions of the bowl basket area of the dishwasher in the related art.

A spray arm assembly 100B for a dishwasher of an embodiment of the present invention will now be described with reference to a plurality of embodiments.

Embodiment 1

As shown in FIGS. 1 to 14, in the present embodiment, the spray arm assembly 100B for a dishwasher is mainly composed of a spray arm holder 10B, a spray arm main body 20B, a first spray arm auxiliary body 30B, and a second spray arm pair. The body 40B, the first gear set 52B, the sun gear 51B, the second gear set 53B, the first slip ring 61B, the second slip ring 62B, and the third slip ring 63B are composed.

Wherein, the first gear set 52B is a primary gear transmission, that is, the first gear set 52B includes one planetary gear, and the second gear set 53B is a two-stage gear transmission, that is, the second gear set 53B includes the second planetary gear 531B and is disposed at Center gear 51B The second transfer gear 532B is in communication with the second planetary gear 531B.

As shown in FIG. 2 and FIG. 4, the spray arm holder 10B is formed in a columnar shape extending in the vertical direction (up and down direction as shown in FIG. 1), and the spray arm holder 10B defines two ends thereof which are electrically connected and extend in the axial direction thereof. In the passage 101B, the lower end of the spray arm holder 10B is provided with a water inlet 102B which is electrically connected to the water flow passage 101B, and the side wall of the upper end of the spray arm holder 10B is provided with a first water outlet 103B extending in the circumferential direction thereof, and the spray arm holder 10B The side wall is further provided with a first sliding engagement groove 104B formed in an annular shape extending along the circumferential direction of the spray arm holder 10B and located below the first water outlet 103B, and the upper end of the spray arm holder 10B is located The spline fitting portion 11B above the first water outlet 103B.

As shown in FIGS. 2 and 5, the spray arm main body 20B is rotatably provided on the spray arm holder 10B and rotatable about the central axis of the spray arm holder 10B, and the spray arm main body 20B forms a long strip member disposed in a horizontal plane. The first arm chamber 201B is electrically connected to the water flow passage 101B, and the spray arm main body 20B is mainly composed of a main wing 21B and an aileron 22B located on both sides of the central axis of the spray arm main body 20B, wherein the main wing 21B is The upper surface of the first positioning shaft 211B is provided with a second water outlet 210B that is electrically connected to the first inner cavity 201B, and the side wall of the first positioning shaft 211B is provided with a second sliding engagement groove 212B. The second sliding engagement groove 212B forms a ring shape extending along the circumferential direction of the first positioning shaft 211B, the upper surface of the aileron 22B is provided with a second positioning shaft 221B, and the middle portion of the second positioning shaft 221B is provided with the first inner cavity 201B. The third water outlet 220B of the conduction, the side wall of the second positioning shaft 221B is provided with a third sliding engagement groove 222B, and the third sliding engagement groove 222B forms a ring extending along the circumferential direction of the second positioning shaft 221B, and the spray arm main body 20B The lower surface is provided with a first through hole 202B, and the upper end of the spray arm holder 10B passes through the first pass 202B, extends into the first lumen 201B, and through the upper surface at a position connected with the main wing flaps 21B and 22B.

As shown in FIGS. 2 and 8, the first sliding ring 61B is sleeved on the spray arm holder 10B and pivotally connected to the first sliding engagement groove 104B on the spray arm holder 10B. The first slide ring 61B and the spray arm are provided. The main body 20B is snap-connected to rotate around the central axis of the spray arm holder 10B along with the spray arm main body 20B. The second slide ring 62B is sleeved on the first positioning shaft 211B and pivotally engaged with the second sliding engagement groove 212B. The third sliding ring 63B is sleeved on the second positioning shaft 221B and pivotally engaged with the third sliding engagement groove 222B.

As shown in FIG. 2 and FIG. 9, the sun gear 51B is disposed above the spray arm main body 20B and is fixedly coupled to the spray arm seat 10B which protrudes from the upper surface of the spray arm main body 20B. Specifically, the center gear 51B is provided with a positioning groove in the middle thereof. 511B, the spline fitting portion 11B of the upper end of the spray arm holder 10B is snap-connected with the positioning groove 511B so that the sun gear 51B is fixedly coupled to the spray arm holder 10B to ensure that the sun gear 51B does not rotate when the spray arm assembly 100B operates. The first planetary gear 521B is sleeved on the outer side of the second sliding ring 62B and is engaged with the second sliding ring 62B to ensure that the first planetary gear 521B and the second sliding ring 62B rotate together around the central axis of the first positioning shaft 211B. The second planetary gear 531B is sleeved on the outer side of the third sliding ring 63B and is coupled to the third sliding ring 63B to ensure that the second planetary gear 531B rotates together with the third sliding ring 63B about the central axis of the second positioning shaft 221B. The second transmission gear 532B is rotatably disposed on the spray arm main body 20B and located between the sun gear 51B and the second planetary gear 531B, and the second transmission gear 532B is coupled to the sun gear 51B and the second planetary gear 531B, respectively. Engage the drive.

As shown in FIG. 2 and FIG. 6, the first spray arm sub-body 30B is formed in an elongated shape arranged in a horizontal plane, and the first spray arm auxiliary body 30B defines a second inner cavity 301B extending along the longitudinal direction thereof. The lower surface of the spray arm sub-body 30B is provided with a first spray arm auxiliary body shaft 33B, and the middle portion of the first spray arm auxiliary body shaft 33B has a second through hole 303B that is electrically connected to the second inner chamber 301B, and the spray arm main body 20B The first positioning shaft 211B extends into the second through hole 303B and is pivotally connected to the first spray arm auxiliary body 30B. Specifically, the first spray arm auxiliary body rotating shaft 33B is coupled to the second sliding ring 62B. To rotate the second sliding ring 62B together, the side of the first spray arm auxiliary body 30B on its rotation axis is the long arm 31B, and the other side of the first spray arm auxiliary body 30B on the other side thereof is the short arm 32B. The long arm 31B and the short arm 32B are respectively provided with first injection holes 302B extending in the longitudinal direction thereof and electrically connected to the second inner cavity 301B.

As shown in FIGS. 2 and 7, the second spray arm sub-body 40B is formed in an elongated shape disposed in a horizontal plane, and the second arm sub-body 40B defines a third inner cavity 401B extending along the longitudinal direction thereof, and a second The lower surface of the spray arm sub-body 40B is provided with a second spray arm auxiliary body rotating shaft 42B, and the middle portion of the second spray arm auxiliary body rotating shaft 42B has a third through hole 403B which is electrically connected to the third inner cavity 401B, and the spray arm main body 20B The second positioning shaft 221B extends into the third through hole 403B and is pivotally connected to the second spray arm auxiliary body 40B. Specifically, the second spray arm auxiliary body rotating shaft 42B is coupled to the third sliding ring 63B to The third sliding arm 63B is rotated together, and the second spray arm auxiliary body 40B has two spray arms symmetrically disposed with each other, and each spray arm is provided with a plurality of second spray holes 402B spaced apart along the longitudinal direction thereof. The positions of the plurality of second injection holes 402B on the spray arms are in one-to-one correspondence.

In the present embodiment, the centers of the first planetary gear 521B, the second planetary gear 531B, the second transmission gear 532B, and the center of the sun gear 51B are collinearly arranged, and the first planetary gear 521B and the second planetary gear 531B are respectively provided with the sun gear 51B. The two sides are formed in an external meshing relationship. Since the sun gear 51B is fixed, it can be seen that the rotation direction of the first planetary gear 521B is the same as the revolution direction, and the rotation direction of the second planetary gear 531B is opposite to the revolution direction. The spray arm main body 20B serves as a carrier of the first planetary gear 521B, the second planetary gear 531B, and the second transmission gear 532B. With the rotation of the first planetary gear 521B, the second planetary gear 531B, and the second transmission gear 532B, the spray arm The main body 20B rotates around the central axis of the spray arm holder 10B together with the first planetary gear 521B, the second planetary gear 531B, and the second transmission gear 532B.

Wherein, for the first gear set 52B of the primary transmission, the gear ratio of the sun gear 51B and the first planetary gear 521B is 2:1, specifically, the sun gear 51B has 80 teeth, and the first planetary gear 521B has 40 teeth. Further, the pitch circle radius R1 of the sun gear 51B and the index circle radius R21 of the first planet gear 521B are 2:1, specifically, R1 is equal to 80 mm, and R21 is equal to 40 mm. Therefore, in the case of the primary transmission, the revolution trajectory radius R31 of the first planetary gear 521B is equal to three times the radius of the index circle R21 of the first planetary gear 521B, that is, 120 mm.

For the second gear set 53B of the two-stage transmission, the gear ratio of the sun gear 51B and the second transmission gear 532B is 2:1, specifically, the sun gear 51B has 80 teeth, and the second transmission gear 532B has 40 teeth. At the same time, the second transmission gear 532B between the second planetary gear 531B and the sun gear 51B is a constant speed transmission, and the second transmission gear 532B and the second planetary gear 531B are identical, and their pitch circle radii R23 and R22 are equal. Therefore, the indexing circle of the sun gear 51B The radius R1 of the radius R1 and the second planetary gear 531B is 2:1, specifically R1 is equal to 80 mm, and R22 and R23 are equal to 40 mm. Therefore, in the case of the two-stage transmission, the revolution trajectory radius R32 of the second planetary gear 531B is equal to five times R22, that is, 200 mm.

According to the gear ratio and the meshing relationship, it can be seen that the first spray arm sub-body 30B rotates in the same direction as the revolution, and the rotational speed ratio is 3:1. The trajectory formed by the movement of the first injection hole 302B will appear as a two-lobed long outer trochoidal, and the phase difference angle of the two movement trajectories is equal to the two first injection holes 302B connected to the first spray arm secondary body rotation shaft 33B. The phase difference between the lines is 1/2 of the angle.

As shown in FIG. 11, the first injection hole 302B forms a characteristic epicycloid motion locus. For the relatively outer first injection hole 302B, the injection hole is larger than the first boom sub-body shaft 33B by the first planetary gear 521B. 1/3 of the revolution radius R31, that is, greater than 40 mm, the motion trajectory is a two-lobed long outer trochoid; as the position of the first injection hole 302B moves inward, the motion trajectory is entirely inwardly retracted, and the middle position The two inner windings are also gradually reduced; when the distance from the first injection hole 302B to the first spray arm auxiliary body shaft 33B is equal to 1/3 of the revolution radius R31 of the first planetary gear 521B, that is, 40 mm, the inner winding It just disappears and becomes two sharp corners. At this time, the motion trajectory is a kidney line.

Wherein, as shown in FIG. 11 and FIG. 12, the first spray arm auxiliary body 30B includes the same two spray arms, and the first spray holes 302B are respectively opened, and the phase difference between the two sets of first spray holes 302B is two. The phase difference between the spray arms is 1/2 of 180°, i.e., 90°, so that the two sets of first spray holes 302B of the first spray arm sub-body 30B can be interwoven into a more comprehensive cover spray.

According to the gear ratio and the meshing relationship, it can be seen that the rotation speed of the second spray arm sub-body 40B together with the second planetary gear 531B is opposite to the revolution direction, and the rotation speed ratio is 1:1. The trajectory formed by the movement of the second injection hole 402B will appear as a flat elliptical line, and the phase difference angle of the two movement trajectory lines is equal to the phase difference between the lines connecting the two second injection holes 402B and the second spray arm auxiliary body rotation shaft 42B. 1/2 of the angle.

As shown in FIG. 13, the second injection hole 402B forms a characteristic elliptical line trajectory, and the outer second ejection hole 402B, the flattened and elongated elliptical trajectory is formed; as the second ejection hole 402B is oriented Within the movement, both ends of the trajectory line gradually adduct, and the middle gradually becomes outward, and the whole gradually becomes round. Therefore, the second injection hole 402B is mainly a washing area for covering the corner position. The second spray arm sub-body 40B includes two spray arms, which are provided with the same second spray holes 402B, respectively corresponding to the areas of the two diagonal lines in the dishwasher. The phase difference of the moving trajectory lines of the two sets of second injection holes 402B is 1/2 of the phase difference between the two spray arms, that is, 90°. Therefore, the second spray arm sub-body 40B can well cover the washing of the four corner positions of the square area in the dishwasher.

The spray arm assembly 100B of the present embodiment has two spray arm auxiliary bodies, wherein the first spray arm auxiliary body 30B can cover most of the square except for the four corners, including the intermediate portion of the four sides; and the second spray The arm sub-body 40B is a region that mainly supplements the position of the four corners. As shown in Fig. 14, in combination with the washing regions of the two spray arm sub-body, the trajectories of the first injection holes 302B and the second injection holes 402B are interlaced with each other, so that the coverage of the square washing area can be achieved.

Embodiment 2

15 to 28, in the present embodiment, the first gear set 52B is a three-stage gear transmission, that is, the first gear set 52B includes a first planetary gear 521B and two first transmission gears 522B, two first The transmission gear 522B is arranged side by side between the first planetary gear 521B and the sun gear 51B, and one of the two first transmission gears 522B is respectively meshed with the other first transmission gear 522B and the first planetary gear 521B. The other of the first transmission gears 522B is externally meshed with the sun gear 51B.

The second gear set 53B is a four-stage gear transmission, that is, the second gear set 53B includes a second planetary gear 531B, two upper and lower coordinated second transmission gears 532B disposed between the sun gear 51B and the second planetary gear 531B, and Two externally meshed second transmission gears 532B disposed in the same horizontal plane as the second planetary gears 531B, and the upper and lower gears of the two upper and lower arranged second transmission gears 532B are meshed with the sun gear 51B, two The lower gear, the other two second transmission gears 532B and the second planetary gears 531B of the interlocking second transmission gears 532B disposed above and below are disposed in the same horizontal plane and are externally meshed.

As shown in FIGS. 16 and 18, the spray arm holder 10B is formed in a columnar shape extending in the vertical direction (upper and lower direction as shown in FIG. 1), and the spray arm holder 10B defines two ends thereof which are electrically connected and extend in the axial direction thereof. In the passage 101B, the lower end of the spray arm holder 10B is provided with a water inlet 102B which is electrically connected to the water flow passage 101B, and the side wall of the upper end of the spray arm holder 10B is provided with a first water outlet 103B extending in the circumferential direction thereof, and the spray arm holder 10B The side wall is further provided with a first sliding engagement groove 104B formed in an annular shape extending along the circumferential direction of the spray arm holder 10B and located below the first water outlet 103B, and the upper end of the spray arm holder 10B is located The spline fitting portion 11B above the first water outlet 103B.

As shown in FIGS. 16 and 19, the spray arm main body 20B is rotatably provided on the spray arm holder 10B and rotatable about the central axis of the spray arm holder 10B, and the spray arm main body 20B forms a long plate member disposed in a horizontal plane. The first arm chamber 201B is electrically connected to the water flow passage 101B, and the spray arm main body 20B is mainly composed of a main wing 21B and an aileron 22B located on both sides of the central axis of the spray arm main body 20B, wherein the main wing 21B is The upper surface of the first positioning shaft 211B is provided with a second water outlet 210B that is electrically connected to the first inner cavity 201B, and the side wall of the first positioning shaft 211B is provided with a second sliding engagement groove 212B. The second sliding engagement groove 212B forms a ring shape extending along the circumferential direction of the first positioning shaft 211B, the upper surface of the aileron 22B is provided with a second positioning shaft 221B, and the middle portion of the second positioning shaft 221B is provided with the first inner cavity 201B. The third water outlet 220B of the conduction, the side wall of the second positioning shaft 221B is provided with a third sliding engagement groove 222B, and the third sliding engagement groove 222B forms a ring extending along the circumferential direction of the second positioning shaft 221B, and the spray arm main body 20B The lower surface is provided with a first through hole 202B, and the upper end of the spray arm holder 10B passes through the first Hole 202B, extends into the first lumen 201B, and through the upper surface of the

main wing flap

21B and 22B of the connection position.

As shown in FIGS. 16 and 22, the first sliding ring 61B is sleeved on the spray arm holder 10B and pivotally connected to the first sliding engagement groove 104B on the spray arm holder 10B, the first slide ring 61B and the spray arm. The main body 20B is snap-connected to rotate around the central axis of the spray arm holder 10B along with the spray arm main body 20B. The second slide ring 62B is sleeved on the first positioning shaft 211B and pivotally engaged with the second sliding engagement groove 212B. The third sliding ring 63B is sleeved on the second positioning shaft 221B and matched with the third sliding ring. The slot 222B is pivotally mated.

As shown in FIGS. 16 and 23, the sun gear 51B is disposed above the spray arm main body 20B and is fixedly coupled to the spray arm seat 10B which protrudes from the upper surface of the spray arm main body 20B. Specifically, the center gear 51B is provided with a positioning groove in the middle thereof. 511B, the spline fitting portion 11B of the upper end of the spray arm holder 10B is snap-connected with the positioning groove 511B so that the sun gear 51B is fixedly coupled to the spray arm holder 10B to ensure that the sun gear 51B does not rotate when the spray arm assembly 100B operates. The first planetary gear 521B is sleeved on the outer side of the second sliding ring 62B and is engaged with the second sliding ring 62B to ensure that the first planetary gear 521B and the second sliding ring 62B rotate together around the central axis of the first positioning shaft 211B. The second planetary gear 531B is sleeved on the outer side of the third sliding ring 63B and is coupled to the third sliding ring 63B to ensure that the second planetary gear 531B rotates together with the third sliding ring 63B about the central axis of the second positioning shaft 221B. Two first transmission gears 522B are rotatably disposed on the spray arm main body 20B and located between the sun gear 51B and the first planetary gears 521B, and three of the four second transmission gears 532B are rotatably disposed on the spray arms in sequence. The main body 20B is located between the sun gear 51B and the second planetary gear 531B, and the other of the four second transmission gears 532B is disposed above the three second transmission gears 532B and externally meshed with the sun gear 51B, and One of the lower three transmission gears 532B is fixed to the same shaft and rotates together.

As shown in FIG. 16 and FIG. 20, the first spray arm sub-body 30B is formed in an elongated shape disposed in a horizontal plane, and the first spray arm auxiliary body 30B defines a second inner cavity 301B extending along the longitudinal direction thereof. The lower surface of the spray arm sub-body 30B is provided with a first spray arm auxiliary body shaft 33B, and the middle portion of the first spray arm auxiliary body shaft 33B has a second through hole 303B that is electrically connected to the second inner chamber 301B, and the spray arm main body 20B The first positioning shaft 211B extends into the second through hole 303B and is pivotally connected to the first spray arm auxiliary body 30B. Specifically, the first spray arm auxiliary body rotating shaft 33B is coupled to the second sliding ring 62B. To rotate the second sliding ring 62B together, the side of the first spray arm auxiliary body 30B on its rotation axis is the long arm 31B, and the other side of the first spray arm auxiliary body 30B on the other side thereof is the short arm 32B. The long arm 31B and the short arm 32B are respectively provided with first injection holes 302B extending in the longitudinal direction thereof and electrically connected to the second inner cavity 301B.

As shown in FIGS. 16 and 21, the second spray arm sub-body 40B is formed in an elongated shape disposed in a horizontal plane, and the second spray portion auxiliary body defines a third internal cavity 401B extending along the longitudinal direction thereof, and the second spray The lower surface of the arm sub-body 40B is provided with a second spray arm sub-body rotating shaft 42B, and the middle portion of the second spray arm auxiliary body rotating shaft 42B has a third through hole 403B that is electrically connected to the third inner cavity 401B, and the spray arm main body 20B The second positioning shaft 221B extends into the third through hole 403B and is pivotally connected to the second spray arm auxiliary body 40B. Specifically, the second spray arm auxiliary body rotating shaft 42B is coupled to the third sliding ring 63B to drive The third sliding ring 63B rotates together, and the second spray arm auxiliary body 40B has two spray arms symmetrically disposed with each other, and each spray arm is provided with a plurality of second spray holes 402B spaced apart along the longitudinal direction thereof, two The positions of the plurality of second injection holes 402B on the spray arm are in one-to-one correspondence.

In this embodiment, the first planetary gear 521B, the two first transmission gears 522B, the second planetary gear 531B, the two linked second transmission gears 532B, the two externally meshed second transmission gears 532B, and the sun gear 51B The centers are arranged in a line, and the first gear set 52B and the second gear set 53B are divided into two sides of the sun gear 51B, which are all in an external meshing relationship. Since the sun gear 51B is fixed, it can be seen that the rotation direction and the revolution direction of the first planetary gear 521B are the same, and the second planet The rotation direction of the gear 531B is opposite to the revolution direction.

For the first gear set 52B, the gear ratio of the sun gear 51B and the first transmission gear 522B directly meshed therewith is 4:1, specifically, the sun gear 51B has 80 teeth, and the first transmission gear 522B has 20 teeth. At the same time, the other first transmission gears 522B are constant speed transmissions and use the same transmission gears. Further, the index circle radius R1 of the sun gear 51B and the index circle radius R21 of the first transmission gear 522B are 4:1, specifically, R1 is equal to 60 mm, and R21 is equal to 15 mm. As can be seen from the above, in the case of the three-stage transmission, the revolution trajectory radius R31 of the first planetary gear 521B is equal to nine times the radius of the index circle R21 of the first transmission gear 522B, that is, 135 mm.

For the second gear set 53B, the gear ratio of the sun gear 51B and the second transmission gear 532B directly meshed therewith is 2:1, specifically, the sun gear 51B has 80 teeth, and the second transmission gear 532B has 40 teeth. At the same time, other gear drives are of constant speed. The ratio of the index circle radius R22 of the second transfer gear 532B located above the two of the two linked second transmission gears 532B to the index circle radius R23 of the second drive gear 532B located below is 2:1. Specifically, R1 is equal to 60 mm, R22 is equal to 30 mm, and R23 is equal to 15 mm. Therefore, in the case of the four-stage transmission, the revolution trajectory radius R32 of the second planetary gear 531B is equal to six times the radius of the index circle R22 of the second transmission gear 532B located above the two linked second transmission gears 532B, which is equal to The second transmission gear 532B located below has 12 times the radius of the index circle R23, that is, 180 mm.

The spray arm main body 20B serves as a carrier of the first gear set 52B and the second gear set 53B, and with the rotation of each of the first gear set 52B and the second gear set 53B, the spray arm main body 20B together with the first gear set 52B And each of the second gear sets 53B rotates about a central axis of the spray arm holder 10B. The two interlocking second transmission gears 532B are fixed together, and then rotatably mounted on the spray arm main body 20B to achieve coaxial connection.

According to the gear ratio and the meshing relationship, it can be seen that the first spray arm sub-body 30B rotates in the same direction as the revolution, and the rotational speed ratio is 5:1. The trajectory formed by the movement of the first injection hole 302B will appear as a four-lobed long outer trochoidal line, and the phase difference angles of the two movement trajectories are equal to the two first injection holes 302B connected to the first spray arm secondary body rotation shaft 33B. The phase difference between the lines is 1/4 of the angle.

As shown in FIG. 25, the first injection hole 302B forms a characteristic epicycloid motion locus. For the relatively outer first injection hole 302B, the ejection hole is larger than the first boom sub-body shaft 33B by the first planetary gear 521B. 1/5 of the revolution radius R31, that is, greater than 27 mm, the motion trajectory is a four-lobed long outer trochoid; as the position of the first injection hole 302B moves inward, the motion trajectory is entirely inwardly retracted, and the middle position The four inner windings are also gradually reduced; when the distance from the first injection hole 302B to the first spray arm auxiliary body shaft 33B is equal to 1/5 of the revolution radius R31 of the first planetary gear 521B, that is, 27 mm, the inner winding Just disappeared, turned into four sharp corners, the overall shape of four petals.

As shown in FIG. 25 and FIG. 26, the first spray arm sub-body 30B includes a long arm 31B and a short arm 32B, and a first injection hole 302B is opened correspondingly, and the phase difference of the movement trajectories of the two sets of first injection holes 302B is The phase difference between the long arm 31B and the short arm 32B is 1/4 of 180°, that is, 45°, so that the two sets of first injection holes 302B of the first spray arm sub-body 30B can be interwoven into a more comprehensive cover spray. .

As shown in FIG. 27, the second injection hole 402B forms a characteristic elliptical line trajectory, and the outer second ejection hole 402B, the flattened and elongated elliptical trajectory is formed; as the second ejection hole 402B is oriented Within the movement, both ends of the trajectory line gradually adduct, and the middle gradually becomes outward, and the whole gradually becomes round. Therefore, the second injection hole 402B is mainly a washing area for covering the corner position.

The second spray arm sub-body 40B includes two spray arms, and the two spray arms are respectively provided with the same second spray holes 402B, and the two sets of second spray holes 402B respectively cover the two diagonal lines in the dishwasher. Area. The phase difference of the moving trajectory lines of the two sets of second injection holes 402B is 1/2 of the phase difference between the two spray arms, that is, 90°. Therefore, the second spray arm sub-body 40B can well cover the washing of the four corner positions of the square area in the dishwasher.

The spray arm assembly 100B of the present embodiment has two spray arm auxiliary bodies, wherein the first spray arm auxiliary body 30B can cover most of the square except the four corners, including the intermediate portion of the four sides; and the second The spray arm sub-body 40B is a region that mainly supplements the position of the four corners. As shown in Fig. 28, in combination with the washing regions of the two spray arm sub-body, the trajectories of the first spray holes 302B and the second spray holes 402B are interwoven, and the coverage of the square wash area is substantially completely achieved.

A dishwasher according to an embodiment of the second aspect of the present invention includes the spray arm assembly 100B for a dishwasher according to the above embodiment. Since the spray arm assembly 100B for a dishwasher according to an embodiment of the present invention has the above-described technical effects, the dishwasher according to the embodiment of the present application also has the above-described technical effects, that is, the dishwasher has a simple structure and various components. The connection is reliable, the assembly and disassembly is convenient, the square washing area can be realized, the washing effect is good, the washing efficiency is high, and the user experience is good.

Other configurations and operations of dishwashers in accordance with embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position of indications such as "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplification of the description, and does not indicate or imply that the device or component referred to has a specific orientation, is constructed and operated in a specific orientation, and thus It is not to be understood as limiting the invention.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it is understood that the foregoing embodiments are illustrative and not restrictive Variations, modifications, alterations and variations of the above-described embodiments are possible within the scope of the invention.

Claims

A spray arm assembly for a dishwasher, comprising:

a spray arm seat, the spray arm seat defines a water flow passage, one end of the spray arm seat is provided with a water inlet communicating with the water flow passage, and the other end of the spray arm seat is provided with the water flow passage First outlet;

a spray arm body, the spray arm body is disposed at the other end of the spray arm seat and rotates around a central axis of the spray arm seat, and the spray arm body defines a first state that is electrically connected to the first water outlet An inner cavity, the spray arm body includes a main wing and an aileron on both sides of a central axis of the spray arm seat, and the main wing and the aileron are respectively provided with a first conductive body Two outlets and a third outlet;

a first spray arm auxiliary body, the first spray arm auxiliary body is disposed on the spray arm body, and the first spray arm auxiliary body defines a second inner cavity that is electrically connected to the second water outlet. The first spray arm auxiliary body is provided with a first spray arm auxiliary body rotating shaft and a first injection hole that is electrically connected to the second inner cavity, and the first spray arm auxiliary body surrounds the first spray arm auxiliary body The central axis of the rotating shaft is rotatable;

a second spray arm auxiliary body, the second spray arm auxiliary body is disposed on the spray arm body, and the second spray arm auxiliary body defines a third inner cavity that is electrically connected to the third water discharge port. The second spray arm auxiliary body is provided with a second spray arm auxiliary body rotating shaft and a second injection hole that is electrically connected to the second inner cavity, and the second spray arm auxiliary body surrounds the second spray arm auxiliary body The central axis of the rotating shaft is rotatable, and the second spray arm auxiliary body includes two spray arms symmetrically arranged on two sides of the rotating shaft of the second spray arm auxiliary body, and the two spray arms are respectively provided with the first a second injection hole, the movement trajectory of the first injection hole and the second injection hole superimposed to define a substantially square washing area;

a gear assembly coupled to the spray arm body, the first spray arm sub-body and the second spray arm sub-body to drive the spray arm body and the spray arm sub-body to rotate.
A spray arm assembly for a dishwasher according to claim 1, wherein said water flow passage extends in an axial direction of said spray arm seat, and said first water discharge port is provided in said spray arm seat On the other side of the side wall.
The spray arm assembly for a dishwasher according to claim 1, further comprising: a first sliding ring, wherein the spray arm seat is provided with a first sliding engagement groove, and the first sliding ring can be Rotatingly sleeved on the first sliding engagement groove, the spray arm body is provided with a first through hole, and an outer circumference of the first through hole extends downward and is connected to the first sliding ring.
The spray arm assembly for a dishwasher according to claim 3, further comprising:

a second sliding ring, the spray arm body is provided with a first positioning shaft communicating with the second water outlet, the first positioning shaft is provided with a second sliding engagement groove, and the second sliding ring is rotatable The grounding sleeve is sleeved on the second sliding matching groove, and one end of the rotating shaft of the first spray arm auxiliary body is provided with a second through hole, and the outer circumference of the second through hole extends downward and is opposite to the second sliding Connected to the ring, the gear assembly is coupled to the second slip ring;

a third sliding ring, the spray arm body is provided with a second positioning shaft communicating with the third water outlet, the second positioning a third sliding engagement groove is disposed on the shaft, the third sliding ring is rotatably sleeved on the third sliding engagement groove, and one end of the rotating shaft of the second spray arm auxiliary body is provided with a third through hole. The outer circumference of the third through hole extends downward and is connected to the third sliding ring, and the gear assembly is connected to the third sliding ring.
A spray arm assembly for a dishwasher according to claim 4, wherein said gear assembly comprises:

a central gear, the central gear is provided with a positioning groove, and the other end of the spray arm seat is provided with a fitting portion, the engaging portion is connected to the first sliding ring, and the engaging portion passes through the first through hole Extending into the positioning groove and connected to the sun gear;

a first gear set, the first gear set meshes with the sun gear and is coupled to the second slip ring for being driven by the second slip ring;

a second gear set that meshes with the sun gear and is coupled to the third slip ring for actuation by the third slip ring.
The spray arm assembly for a dishwasher according to claim 5, wherein the number of gears of the first gear set is an odd number, and the number of gears of the second gear set is an even number.
A spray arm assembly for a dishwasher according to claim 6, wherein said first gear set includes a first planetary gear located outside said spray arm body, said first planetary gear and said a second slip ring coupled to and driven by the second slip ring, the first planet gear being driven with the sun gear; the second gear set including a second planet gear located outside the spray arm body, A second planet gear is coupled to the third slip ring and is driven by the third slip ring, the second planet gear being driven with the sun gear.
A spray arm assembly for a dishwasher according to claim 7, further comprising a first transfer gear and a second transfer gear, said first transfer gear and said first planetary gear and said center The gear meshes, and the second transmission gear meshes with the second planetary gear and the sun gear.
A spray arm assembly for a dishwasher according to claim 8, wherein said sun gear, said first planetary gear, said second planetary gear, said first transmission gear, and said first The centers of the two transmission gears are on the same line.
A spray arm assembly for a dishwasher according to claim 9, wherein a gear ratio R of said sun gear and said first transmission gear is an even number, and said plurality of said first transmission gears are driven at a constant speed .
The spray arm assembly for a dishwasher according to claim 9, wherein a ratio of an index circle radius R1 of the sun gear to an index circle radius R21 of the first transmission gear is R, The revolution trajectory radius of the first transmission gear is (R+1) times the radius of the index circle R21 of the first transmission gear.
A spray arm assembly for a dishwasher according to claim 11, wherein a ratio of gears of said sun gear to said second transmission gear is 2:1, and said plurality of said second transmission gears are at a constant speed transmission.
A spray arm assembly for a dishwasher according to claim 10 or 11, wherein said first spray arm The rotation of the secondary body is the same as the revolution direction, and the rotation speed ratio of the rotation and the revolution is (R+1):1.
A spray arm assembly for a dishwasher according to claim 13, wherein said first spray arm auxiliary body is provided with said plurality of center collinear said first injection holes, said first injection The phase difference angle of the motion trajectory of the hole rotation and the revolution is equal to 1/R of the phase difference angle between the two first injection holes and the first spray arm auxiliary body rotation line.
A spray arm assembly for a dishwasher according to claim 14, wherein the injection trajectory of said first injection hole satisfies a parametric equation:

x=A*cos(ang)+B*cos[(R+1)*ang], y=A*sin(ang)+B*sin[(R+1)*ang], where ang is the spray The angle at which the arm body rotates, 0°<ang<360°, A is the distance from the first spray arm sub-body shaft to the central axis of the spray arm seat, and B is the first injection hole to the first The distance of the rotor shaft of a spray arm.
A spray arm assembly for a dishwasher according to claim 15, wherein said first spray arm sub-body includes a long arm and a short side on both sides of a central axis of said first spray arm auxiliary shaft The arm, the long arm and the short arm are respectively provided with the first injection holes.
A spray arm assembly for a dishwasher according to claim 16, wherein a movement trajectory of said first injection hole on said long arm and said first injection hole on said short arm The phase difference is a phase difference 1/R between the long arm and the short arm.
The spray arm assembly for a dishwasher according to claim 12, wherein the rotation of the second spray arm sub-body is opposite to the revolution direction, and the rotation speed ratio of the rotation and the revolution is 1:1.
A spray arm assembly for a dishwasher according to claim 18, wherein said second spray arm auxiliary body is provided with a plurality of said second injection holes of a central collinear line, said second injection The phase difference angle of the motion trajectory of the hole rotation and the revolution is equal to 1/2 of the phase difference angle between the connection lines of the two second injection holes and the second spray arm auxiliary body.
A spray arm assembly for a dishwasher according to claim 19, wherein the injection trajectory of said second injection hole satisfies a parametric equation:

X=C*cos(ang)+D*cos(ang), y=C*sin(ang)-D*sin(ang), where ang is the angle at which the body of the spray arm is rotated, 0°<ang< 360°, C is the distance from the second spray arm sub-body shaft to the central axis of the spray arm seat, and D is the distance from the second injection hole to the second spray arm auxiliary body shaft.
A spray arm assembly for a dishwasher according to claim 1, wherein a phase difference of a movement trajectory of said second injection holes on said two spray arms is two said spray arms 1/2 of the phase difference between.
A dishwasher, comprising the spray boom assembly for a dishwasher of any of claims 1-21.