CN216933101U - Dish washing machine and spraying device - Google Patents

Abstract

The utility model relates to a dish-washing machine and a spraying device.A main spray arm drives a first transmission rod to synchronously move in the rotating process relative to a fixing piece, a third gear moves along a first bevel gear when the first transmission rod moves, so that the first transmission rod autorotates, and a fourth bevel gear drives a second bevel gear to rotate when the first transmission rod autorotates, so that a first auxiliary spray arm is driven to rotate; on the contrary, when the first auxiliary spray arm rotates, the main spray arm can be driven to rotate relative to the fixing piece. Therefore, on one hand, when the main spray arm and the first auxiliary spray arm spray water, the main spray arm and the first auxiliary spray arm rotate synchronously, and water spraying cleaning in a large area can be realized, so that a better cleaning effect can be ensured; on the other hand, the main spray arm and the first auxiliary spray arm rotate in a mutual linkage manner, so that the rotation postures of the main spray arm and the first auxiliary spray arm in the dishwasher can be easily controlled. In addition, the transmission mode through first bevel gear, second bevel gear, third bevel gear, fourth bevel gear realizes that overall structure is simple relatively, compact structure, and the operation is reliable and stable.

Description

Dish washing machine and spraying device

Technical Field

The utility model relates to the technical field of dish washing machines, in particular to a dish washing machine and a spraying device.

Background

The working principle of the dishwasher is as follows: spray through inside spray arm rotation, constantly circulate to the tableware and spray and wash, combine the pressure impact tableware of water injection, reflect other regions of tableware again, accomplish the washing to the tableware, spray arm's the clean degree that the effect that sprays directly influences the tableware, spray arm plays the determining role in the dish washer performance.

Referring to fig. 1, fig. 1 illustrates a region where a conventional spray arm 10 can spray cleaning. The dish washer inner chamber is the square, and the basket of placing the tableware is for putting more tableware, and the shape of basket is the square equally, and the region that current ordinary spray arm 10 rotatory sprayed is circular, and the tableware that square basket four corners was placed is outside the region that spray arm 10 sprayed, can't spray the washing to the four corners position of basket to influence the clean effect.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide a spraying device, which can effectively ensure the cleaning effect.

A second technical problem to be solved by the present invention is to provide a dishwasher which can effectively ensure a washing effect.

The first technical problem is solved by the following technical scheme:

a spray device, the spray device comprising: the fixing piece is used for being fixedly arranged on a machine body of the dish washing machine, and a first end of the fixing piece is provided with a first bevel gear; the fixing piece is arranged at the rotating center of the main spray arm, and the main spray arm can rotate relative to the fixing piece; the first auxiliary spray arm is rotationally arranged at one end of the main spray arm, a first connecting piece is arranged at the rotating center of the first auxiliary spray arm, and the first connecting piece is provided with a second bevel gear; and the first transmission rod is rotationally arranged on the main spray arm around the central axis of the first transmission rod, the two ends of the first transmission rod are respectively provided with a third bevel gear and a fourth bevel gear, the third bevel gear is meshed with the first bevel gear, and the fourth bevel gear is meshed with the second bevel gear.

Compared with the background technology, the spraying device of the utility model has the following beneficial effects:

when the spraying device works, the main spraying arm drives the first transmission rod to synchronously move in the rotating process relative to the fixing piece, the third gear moves along the first bevel gear when the first transmission rod moves, so that the first transmission rod rotates automatically, and the fourth bevel gear drives the second bevel gear to rotate when the first transmission rod rotates automatically, so that the first auxiliary spraying arm is driven to rotate; on the contrary, when the first auxiliary spray arm rotates, the main spray arm can be driven to rotate relative to the fixing piece. Therefore, on one hand, when the main spray arm and the first auxiliary spray arm spray water, the main spray arm and the first auxiliary spray arm rotate synchronously, and water spray cleaning in a large area can be realized, so that a better cleaning effect can be ensured; on the other hand, the main spray arm and the first auxiliary spray arm rotate in a mutual linkage manner, so that the rotation postures of the main spray arm and the first auxiliary spray arm in the dishwasher can be easily controlled. In addition, the transmission mode through first bevel gear, second bevel gear, third bevel gear, fourth bevel gear realizes that overall structure is simple relatively, compact structure, and the operation is reliable and stable.

In one embodiment, the spraying device further comprises a second auxiliary spraying arm and a second transmission rod; the second auxiliary spraying arm is rotatably arranged at the other end of the main spraying arm, a second connecting piece is arranged at the rotating center of the second auxiliary spraying arm, and the second connecting piece is provided with a fifth bevel gear; the second transmission rod is rotatably arranged on the main spray arm around the central axis of the second transmission rod, a sixth bevel gear and a seventh bevel gear are respectively arranged at two ends of the second transmission rod, the sixth bevel gear is meshed with the first bevel gear, and the seventh bevel gear is meshed with the fifth bevel gear. Therefore, the working mode of the second auxiliary spray arm is similar to that of the first auxiliary spray arm, and water spraying operation can be simultaneously carried out with the main spray arm and the first auxiliary spray arm, so that water spraying cleaning in a large area can be realized, and a better cleaning effect can be ensured; on the other hand, the main spray arm, the first auxiliary spray arm and the second auxiliary spray arm are mutually linked and rotated, so that the rotating postures of the main spray arm, the first auxiliary spray arm and the second auxiliary spray arm in the dishwasher can be easily controlled. In addition, the transmission mode through first umbrella tooth, second umbrella tooth, third umbrella tooth, fourth umbrella tooth, fifth umbrella tooth, sixth umbrella tooth, seventh umbrella tooth realizes that overall structure is simple relatively, compact structure, and the operation is reliable and stable.

In one embodiment, the first auxiliary spray arm is provided with three first branch parts radially arranged outwards from the rotation center of the first auxiliary spray arm; the three first branch parts are uniformly arranged; the second auxiliary spray arm is provided with two second branch parts which extend reversely, and the inner cavity of the dishwasher is square; when the main spray arm rotates to one of the side positions perpendicular to the inner cavity, one of the first branch parts of the first auxiliary spray arm and the main spray arm run to the position completely coinciding with the main spray arm, and the second auxiliary spray arm runs to the position perpendicular to the main spray arm; when the main spray arm rotates to a diagonal line of the inner cavity, one first branch part of the first auxiliary spray arm runs to a position coinciding with the diagonal line, so that the first auxiliary spray arm is closer to one vertex angle in the direction of the diagonal line; the second auxiliary spraying arm moves to a position coincident with the diagonal line, so that the second auxiliary spraying arm is closer to the other vertex angle of the direction of the diagonal line.

In one embodiment, the first sub spray arm is provided with three first branch parts which are uniformly arranged; the second auxiliary spraying arm is provided with two second branch parts which are uniformly arranged; the gear ratio of the first bevel gear to the second bevel gear to the fifth bevel gear is 4:3: 2.

In one embodiment, a first spray hole is formed in the upper surface of the main spray arm, and the first spray hole is obliquely arranged towards the tangential direction of the running path of the first spray hole; a second spray hole is formed in the upper surface of the first auxiliary spray arm and is obliquely arranged towards the tangential direction of the running path of the second spray hole; and a third spray hole is arranged on the upper surface of the second auxiliary spray arm and is obliquely arranged towards the tangential direction of the running path of the third spray hole. Therefore, as the first spray holes on the upper surface of the main spray arm are obliquely arranged, the cleaning liquid sprayed out from the first spray holes can form reverse thrust on the main spray arm, and the reverse thrust can enable the main spray arm to rotate, so that a motor is not required to be arranged to drive the main spray arm to rotate, the structure of the spray device can be simplified, and the cost is reduced; similarly, the cleaning liquid jetted outwards from the second jet hole and the third jet hole respectively forms reverse thrust on the first auxiliary spray arm and the second auxiliary spray arm, so that the first auxiliary spray arm and the second auxiliary spray arm respectively rotate.

In one embodiment, the main spray arm is provided with a first fixed block, the first fixed block is provided with a first shaft hole matched with the first transmission rod, and the first transmission rod is rotatably arranged in the first shaft hole; a first concave part is arranged on the inner wall of the first shaft hole in a surrounding manner, a first limiting part is arranged on the outer wall of the first transmission rod in a surrounding manner, and the first limiting part is rotatably arranged in the first concave part; or, a first limiting part is arranged on the inner wall of the first shaft hole in a surrounding manner, a first concave part is arranged on the outer wall of the first transmission rod in a surrounding manner, and the first limiting part is rotatably arranged in the first concave part. Therefore, the first transmission rod can be arranged on the main spray arm in a rotating mode around the central axis of the first transmission rod, and the rotating effect is stable; and under the limiting action of the first limiting part, the first transmission rod can be prevented from moving along the direction of the central axis of the first limiting part, so that the structural stability of the assembled spraying device can be ensured.

In one embodiment, a first end of the fixing piece is arranged in the first cavity of the main spray arm, and a second end of the fixing piece is used for penetrating through the main spray arm to extend outwards and is fixedly arranged on the machine body; the first transmission rod is arranged in the first cavity; the first connecting piece is arranged in the first cavity. Therefore, the fixing piece, the first transmission rod and the first connecting piece are arranged in the first cavity of the main spray arm and are prevented from being exposed, so that the overall appearance structure of the spraying device is simple and compact, the spraying device is convenient to clean, and meanwhile, the protection effect is achieved.

In one embodiment, a third connecting piece is further arranged at the rotating center of the first auxiliary spray arm, penetrates through the main spray arm, extends into the first cavity and then is connected with the first connecting piece.

In one embodiment, the fixing member is provided with a first water flow passage communicated with the first chamber; the first connecting piece is provided with a second water flow channel communicated with the first cavity, the third connecting piece is provided with a third water flow channel, and the third water flow channel is respectively communicated with the second water flow channel and the second cavity of the first auxiliary spray arm. In this way, the high-pressure water in the embodiment enters the first chamber through the first water flow channel, and a part of the high-pressure water is sprayed out through the first spray hole of the main spray arm, and another part of the high-pressure water enters the second chamber through the second water flow channel and the third water flow channel and is sprayed out through the second spray hole of the first auxiliary spray arm.

In one embodiment, the primary nozzle arm includes first and second split covers that are detachably joined. Therefore, when the first transmission rod, the second transmission rod, the fixing piece, the first connecting piece and the second connecting piece are required to be arranged inside the main spray arm, the first split cover and the second split cover can be detached, and after the first split cover and the second split cover are arranged in place, the first split cover and the second split cover are spliced and assembled together.

In one embodiment, the spraying device further comprises a seat plate fixedly arranged on the body of the dishwasher; the second end of the fixing member is fixedly disposed on the seat plate.

In one embodiment, the spray device further comprises a snap ring; the clamping ring comprises a first sleeve, a limiting flange and at least one first limiting bulge, wherein the limiting flange is arranged around the inner wall of one end of the first sleeve in the circumferential direction, and the at least one first limiting bulge is arranged on the inner wall of the first sleeve; the seat board is provided with a second sleeve sleeved outside the second end of the fixing piece, the outer wall of one end, away from the seat board, of the second sleeve is provided with at least one second limiting bulge, the limiting flange is abutted to the second limiting bulge and the end face, away from the seat board, of one end of the second sleeve, and the second limiting bulge is further abutted to and matched with the first limiting bulge; the outer wall of the second end of the fixing piece is provided with at least one third limiting protrusion, the outer wall of one end, far away from the seat plate, of the second sleeve is further provided with a notch correspondingly arranged with the third limiting protrusion, and the third limiting protrusion is arranged in the notch.

In one embodiment, the position-limiting flange is provided with at least one notch, and when the snap ring rotates to a position where the notch is opposite to the third position-limiting protrusion, the third position-limiting protrusion can pass through the notch and be separated in a direction away from the seat plate. So, when needs mounting and bedplate dismouting process, make the snap ring rotate breach and the relative position of third spacing arch, alright in order to carry out the equipment and the separation action of mounting and bedplate.

The second technical problem is solved by the following technical solutions:

the dishwasher comprises the spraying device and a machine body; the spraying device is arranged in the inner cavity of the machine body.

Compared with the background technology, the dishwasher of the utility model has the following beneficial effects:

when the dish washing machine works, the main spray arm drives the first transmission rod to synchronously move relative to the fixing piece in the rotating process, the third gear moves along the first bevel gear when the first transmission rod moves, so that the first transmission rod automatically rotates, and the fourth bevel gear drives the second bevel gear to rotate when the first transmission rod automatically rotates, so that the first auxiliary spray arm is driven to rotate; on the contrary, when the first auxiliary spray arm rotates, the main spray arm can be driven to rotate relative to the fixing piece. Therefore, on one hand, when the main spray arm and the first auxiliary spray arm spray water, the main spray arm and the first auxiliary spray arm rotate synchronously, and water spray cleaning in a large area can be realized, so that a better cleaning effect can be ensured; on the other hand, the main spray arm and the first auxiliary spray arm rotate in a mutual linkage manner, so that the rotation postures of the main spray arm and the first auxiliary spray arm in the dishwasher can be easily controlled. In addition, the transmission mode through first bevel gear, second bevel gear, third bevel gear, fourth bevel gear realizes that overall structure is simple relatively, compact structure, and the operation is reliable and stable.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 illustrates an area that can be cleaned by a conventional spray arm;

fig. 2 is a schematic view of an exploded structure of a spraying device according to an embodiment of the present invention;

FIG. 3 is a schematic view of another exploded structure of a spraying device according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a spray device according to an embodiment of the present invention with a retainer ring separated from a second sleeve;

FIG. 5 is an enlarged schematic view of FIG. 4 at A;

FIG. 6 is a schematic view of the spray device of the present invention with the retainer ring and the seat plate separated from the fixing member;

FIG. 7 is a cross-sectional view of the combination of the retainer ring, seat plate and retainer in a spray assembly in accordance with one embodiment of the present invention;

FIG. 8 is a schematic view of one of the operating positions of the spray device according to one embodiment of the present invention;

fig. 9 is a schematic view of another working position of the spraying device according to the embodiment of the present invention.

Reference numerals are as follows:

10. a spray arm; 20. a fixing member; 21. a first bevel gear; 22. a first water flow passage; 23. a third limiting bulge; 30. a main spray arm; 31. a first nozzle hole; 32. a first fixed block; 33. a second fixed block; 34. rotating the sleeve; 35. a first split cover; 36. a second split cover; 37. a first chamber; 40. a first auxiliary spray arm; 41. a first connecting member; 411. a second bevel gear; 412. a second water flow passage; 42. a first branch portion; 43. a second nozzle hole; 44. a third connecting member; 441. a third water flow channel; 45. a first waterproof ring; 46. a third split cover; 47. a fourth split cover; 48. a second chamber; 50. a first drive lever; 51. a third bevel gear; 52. a fourth bevel gear; 53. a first limiting part; 60. a body; 61. an inner cavity; 70. a second auxiliary spray arm; 71. a second connecting member; 711. a fifth bevel gear; 72. a second branch portion; 73. a third nozzle hole; 74. a fourth connecting member; 75. a second waterproof ring; 76. a fifth split cover; 77. a sixth split cover; 78. a third chamber; 80. a second transmission rod; 81. a sixth bevel gear; 82. a seventh bevel gear; 91. a seat plate; 911. a connecting pipe; 92. a snap ring; 921. a first sleeve; 922. a limiting flange; 9221. a notch; 923. a first limit protrusion; 93. a second sleeve; 931. a second limit bulge; 932. a recess.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 2 to 4, fig. 2 is a schematic view illustrating an exploded structure of a spraying device according to an embodiment of the utility model; FIG. 3 is another schematic view of an exploded view of a spray assembly according to an embodiment of the present invention; fig. 4 shows a schematic structure of the spray device according to an embodiment of the present invention when the snap ring 92 is separated from the second sleeve 93. According to an embodiment of the present invention, a spraying apparatus includes a fixing member 20, a main spray arm 30, a first auxiliary spray arm 40, and a first transmission rod 50. The fixing member 20 is configured to be fixedly installed on a body 60 (as shown in fig. 8 or 9) of the dishwasher, and a first end of the fixing member 20 is provided with a first bevel gear 21. The holder 20 is provided at the center of rotation of the main nozzle arm 30, and the main nozzle arm 30 is rotatable with respect to the holder 20. The first sub spray arm 40 is rotatably provided at one end of the main spray arm 30, a first connection member 41 is provided at a rotation center of the first sub spray arm 40, and the first connection member 41 is provided with a second bevel gear 411. The first driving rod 50 is rotatably disposed on the main spray arm 30 around a central axis thereof, and a third bevel gear 51 and a fourth bevel gear 52 are respectively disposed at two ends of the first driving rod 50. The third bevel 51 meshes with the first bevel 21 and the fourth bevel 52 meshes with the second bevel 411.

When the spraying device works, the main spray arm 30 drives the first transmission rod 50 to synchronously move in the rotating process relative to the fixing part 20, the third gear moves along the first bevel gear 21 when the first transmission rod 50 moves, so that the first transmission rod 50 rotates automatically, and the fourth bevel gear 52 drives the second bevel gear 411 to rotate when the first transmission rod 50 rotates automatically, so that the first auxiliary spray arm 40 is driven to rotate; conversely, rotation of the first auxiliary spray arm 40 also causes the main spray arm 30 to rotate relative to the mounting member 20. Thus, on one hand, referring to fig. 8 and 9, when the main spray arm 30 and the first auxiliary spray arm 40 spray water, they rotate synchronously, so that large area water spray cleaning can be realized, and better cleaning effect can be ensured; on the other hand, the main spray arm 30 and the first sub spray arm 40 rotate in conjunction with each other, so that the rotational postures of the two inside the dishwasher can be easily controlled. In addition, the transmission mode through first bevel gear 21, second bevel gear 411, third bevel gear 51, fourth bevel gear 52 realizes that overall structure is simple relatively, compact structure, and the operation is reliable and stable.

Referring to fig. 2 to 4, in one embodiment, the spraying device further includes a second sub-spraying arm 70 and a second transmission rod 80. The second sub spray arm 70 is rotatably provided at the other end of the main spray arm 30, and a second link 71 is provided at the rotation center of the second sub spray arm 70. The second link 71 is provided with a fifth bevel 711. The second transmission rod 80 is rotatably disposed on the main spray arm 30 around a central axis thereof, and both ends of the second transmission rod 80 are respectively provided with a sixth bevel gear 81 and a seventh bevel gear 82. The sixth bevel 81 meshes with the first bevel 21 and the seventh bevel 82 meshes with the fifth bevel 711. In this way, the second auxiliary spray arm 70 works in a manner similar to the first auxiliary spray arm 40, and can spray water simultaneously with the main spray arm 30 and the first auxiliary spray arm 40, so that water spray cleaning in a large area can be realized, and a better cleaning effect can be ensured; on the other hand, the main spray arm 30, the first auxiliary spray arm 40 and the second auxiliary spray arm 70 are mutually linked and rotated, so that the rotation postures of the three in the dishwasher can be easily controlled. In addition, the transmission mode of the first bevel gear 21, the second bevel gear 411, the third bevel gear 51, the fourth bevel gear 52, the fifth bevel gear 711, the sixth bevel gear 81 and the seventh bevel gear 82 is adopted, so that the whole structure is relatively simple, the structure is compact, and the operation is stable and reliable.

Referring to fig. 2 to 4, in one embodiment, the first sub-spray arm 40 has two or three first branch portions 42 radially arranged from the rotation center thereof. The second sub-spray arm 70 is provided with two or three second branch portions 72 radially arranged outward from the center of rotation thereof. Therefore, during cleaning, not only the main spray arm 30 can spray water to the inner cavity 61 of the dishwasher, but also all the first branch parts 42 of the first auxiliary spray arm 40 can spray water to the inner cavity 61 of the dishwasher, and all the second branch parts 72 of the second auxiliary spray arm 70 can spray water to the inner cavity 61 of the dishwasher, so that the water can be sprayed to a large-area of the inner cavity 61 of the dishwasher, and a better cleaning effect is achieved.

As an alternative, the number of the first branch portions 42 of the first auxiliary spray arm 40 may also be one, four or other number, which is not limited herein. Likewise, the number of the second branch portions 72 of the second sub-spray arm 70 may be one, four or other number, which is not limited herein.

Referring to fig. 2, 4, 8 and 9, in one embodiment, the first sub-spray arm 40 has three first branch portions 42 uniformly arranged. The second sub-spray arm 70 is provided with two second branch portions 72 extending in opposite directions. The inner chamber 61 of the dishwasher is square.

Referring to fig. 8, when the main nozzle arm 30 is rotated to one of the side positions perpendicular to the inner chamber 61, one of the first branch portions 42 of the first auxiliary nozzle arm 40 and the main nozzle arm 30 are operated to a position completely overlapped with the main nozzle arm 30, and the second auxiliary nozzle arm 70 is operated to a position perpendicular to the main nozzle arm 30. Thus, the length of the spray arm formed by combining the main spray arm 30, the first auxiliary spray arm 40 and the second auxiliary spray arm 70 is shortest, the diagonal positions of the inner cavity 61 can be cleaned in place, meanwhile, the interference of the cavity wall of the inner cavity 61 on the operation of the first auxiliary spray arm 40 and the second auxiliary spray arm 70 can be avoided, and the smooth operation of the main spray arm 30, the first auxiliary spray arm 40 and the second auxiliary spray arm 70 in the inner cavity 61 can be realized.

Referring to fig. 9, when the main nozzle arm 30 is rotated to a diagonal line of the inner chamber 61, one of the first branch portions 42 of the first sub-nozzle arm 40 is moved to a position coinciding with the diagonal line, so that the first sub-nozzle arm 40 is closer to one of the corners in the direction of the diagonal line. The second sub-spray arm 70 is moved to a position coinciding with the diagonal line so that the second sub-spray arm 70 is closer to the other corner of the direction of the diagonal line. Thus, the spray arm formed by combining the main spray arm 30, the first auxiliary spray arm 40 and the second auxiliary spray arm 70 has the longest length, all positions of the diagonal line of the inner cavity 61 can be cleaned in place, and the sprayed cleaning liquid can reach the corner position of the inner cavity 61, so that the whole area coverage is realized.

In one embodiment, the first sub spray arm 40 is provided with three first branch portions 42 arranged uniformly. The second auxiliary spray arm 70 is provided with two second branch portions 72 arranged uniformly. The gear ratio of the first bevel gear 21, the second bevel gear 411 and the fifth bevel gear 711 is 4:3: 2. In this way, when the main spray arm 30 is rotated to one of the side positions perpendicular to the inner cavity 61, one of the first branch portions 42 of the first auxiliary spray arm 40 and the main spray arm 30 are operated to a position completely coinciding with the main spray arm 30, and the second auxiliary spray arm 70 is operated to a position perpendicular to the main spray arm 30; when the main nozzle arm 30 is rotated to a diagonal line of the internal chamber 61, one of the first branch portions 42 of the first sub-nozzle arm 40 runs to a position coinciding with the diagonal line, so that the first sub-nozzle arm 40 is closer to one of the corner angles in the direction of the diagonal line.

It should be noted that the numbers of the third, fourth, sixth, and seventh bevel gears 51, 52, 81, and 82 may be the same or different, and are not limited herein. In this embodiment, in order to facilitate production and manufacture and improve the versatility of the parts, the number of teeth of the third bevel gear 51, the fourth bevel gear 52, the sixth bevel gear 81, and the seventh bevel gear 82 are all the same.

Referring to fig. 2 to 4, in one embodiment, the main nozzle arm 30 has a first nozzle hole 31 formed on an upper surface thereof, and the first nozzle hole 31 is inclined toward a tangential direction of an operation path thereof. The first sub spray arm 40 has a second spray hole 43 formed in an inclined manner on an upper surface thereof, and the second spray hole 43 is inclined toward a tangential direction of a running path thereof. The second sub-spray arm 70 has a third spray hole 73 formed obliquely on the upper surface thereof, and the third spray hole 73 is formed obliquely toward the tangential direction of the running path thereof. Thus, as the first spray holes 31 on the upper surface of the main spray arm 30 are obliquely arranged, the cleaning liquid sprayed outwards from the first spray holes 31 can form a reverse thrust to the main spray arm 30, and the reverse thrust can enable the main spray arm 30 to rotate, so that a motor is not needed to drive the main spray arm 30 to rotate, the structure of the spray device can be simplified, and the cost is reduced; similarly, the water jetted out from the second and third nozzle holes 43 and 73 generates a reverse thrust on the first and second sub-spray arms 40 and 70, respectively, and rotates the first and second sub-spray arms 40 and 70, respectively.

It should be noted that the number of the first nozzle holes 31 provided in the main nozzle arm 30 is not limited, and may be one, two, three, or another number. In addition, one or two nozzles perpendicular to the surface thereof may be provided on the main nozzle arm 30 as required. Similarly, the number of the second nozzle holes 43 provided in the first sub-spray arm 40 is not limited, and may be one, two, three, or another number. In addition, one or two spray holes perpendicular to the surface of the first auxiliary spray arm 40 can be arranged according to requirements on the first auxiliary spray arm. The number of the third nozzle holes 73 provided in the second sub-nozzle arm 70 is not limited, and may be one, two, three, or another number. In addition, one or two spray holes perpendicular to the surface of the second auxiliary spray arm 70 can be arranged according to requirements.

Of course, as an alternative, the first nozzle hole 31, the second nozzle hole 43, and the third nozzle hole 73 may also be perpendicular to the upper surface thereof, and the main spray arm 30, the first sub-spray arm 40, or the second sub-spray arm 70 may be driven by a motor to rotate by providing a motor, for example, so that the main spray arm 30, the first sub-spray arm 40, and the second sub-spray arm 70 can also rotate synchronously.

Referring to fig. 2 to 4, in one embodiment, the main nozzle arm 30 is provided with a first fixing block 32. The first fixing block 32 is provided with a first shaft hole corresponding to the first transmission rod 50, and the first transmission rod 50 is rotatably disposed in the first shaft hole. A first concave portion is circumferentially arranged on the inner wall of the first shaft hole, a first limiting portion 53 is circumferentially arranged on the outer wall of the first transmission rod 50, and the first limiting portion 53 is rotatably arranged in the first concave portion. Or, a first limiting portion is circumferentially disposed on an inner wall of the first shaft hole, a first concave portion is circumferentially disposed on an outer wall of the first transmission rod 50, and the first limiting portion is rotatably disposed in the first concave portion. Therefore, the first transmission rod 50 can be arranged on the main spray arm 30 in a manner of rotating around the central axis thereof, and the rotating effect is stable; and under the limiting action of the first limiting part 53, the first transmission rod 50 can be prevented from moving along the central axis direction thereof, so that the structural stability of the assembled spraying device can be ensured.

In addition, the number of the first fixing blocks 32 may be, for example, one, two, or other numbers, which are not limited herein, and may be set according to actual requirements.

It will be appreciated that the second auxiliary spray arm 70 is similar in construction to the first auxiliary spray arm 40, and specifically, the main spray arm 30 is further provided with a second fixed block 33, the second fixed block 33 is provided with a second shaft hole adapted to a second transmission rod 80, and the second transmission rod 80 is rotatably disposed in the second shaft hole. A second concave part is circumferentially arranged on the inner wall of the second shaft hole, a second limiting part is circumferentially arranged on the outer wall of the second transmission rod 80, and the second limiting part is rotatably arranged in the second concave part; or, a second limiting portion is circumferentially arranged on the inner wall of the second shaft hole, a second concave portion is circumferentially arranged on the outer wall of the second transmission rod 80, and the second limiting portion is rotatably arranged in the second concave portion. Therefore, the second transmission rod 80 can be arranged on the main spray arm 30 in a manner of rotating around the central axis thereof, and the rotating effect is stable; and under the limiting action of the second limiting part, the second transmission rod 80 can be prevented from moving along the direction of the central axis thereof, so that the structural stability of the assembled spraying device can be ensured.

Referring to fig. 2 to 4, in one embodiment, a first end of the fixing member 20 is disposed in the first chamber 37 of the main spray arm 30, and a second end of the fixing member 20 is used for extending outward through the main spray arm 30 and is fixedly installed on the machine body 60. The first transmission rod 50 is disposed in the first chamber 37. The first connector 41 is disposed in the first chamber 37. In this way, the fixing member 20, the first transmission rod 50 and the first connecting member 41 are disposed in the first chamber 37 of the main spray arm 30, so as to avoid exposure, so that the overall appearance and structure of the spray device are simple and compact, the spray device is convenient to clean, and the protection effect is achieved.

Referring to fig. 2 to 4, in one embodiment, the first auxiliary spray arm 40 further has a third connecting member 44 at the center of rotation. The third connecting element 44 extends through the main spray arm 30 into the first chamber 37 and is connected to the first connecting element 41. In particular, the third connecting part 44 and the first connecting part 41 are connected to each other, for example, by means of a snap fit, which facilitates quick mounting of the first auxiliary spray arm 40 on the end of the main spray arm 30 by means of a snap fit. Of course, the third connecting member 44 may be connected to the first connecting member 41 by other means, and is not limited in particular.

Referring to fig. 2 to 4 and 7, in one embodiment, the fixing member 20 is provided with a first water flow passage 22 communicated with the first chamber 37. The first connector 41 is provided with a second water flow passage 412 communicating with the first chamber 37, and the third connector 44 is provided with a third water flow passage 441. The third water flow passage 441 communicates the second water flow passage 412 with the second chamber 48 of the first sub-spray arm 40, respectively. As described above, in the present embodiment, for example, the high-pressure water enters the first chamber 37 through the first water flow passage 22, a part of the high-pressure water is discharged to the outside through the first nozzle hole 31 of the main spray arm 30, and the other part of the high-pressure water enters the second chamber 48 through the second water flow passage 412 and the third water flow passage 441, and is discharged to the outside through the second nozzle hole 43 of the first sub spray arm 40.

Referring to fig. 2 to 4 and 7, in an embodiment, in order to ensure the sealing performance at the butt joint position of the third connecting member 44 and the first connecting member 41, a first waterproof ring 45 is sleeved outside the third connecting member 44, and the first waterproof ring 45 abuts between the outer wall surface of the first auxiliary spray arm 40 and the outer wall surface of the main spray arm 30, so that a good waterproof effect can be achieved, and interference cannot be caused to the free rotation of the first auxiliary spray arm 40.

Referring to fig. 2 to 4 and 7, it should be noted that the second auxiliary spray arm 70 is connected to the main spray arm 30 in a manner similar to that of the first auxiliary spray arm 40, but may be different from that of the first auxiliary spray arm 40. Specifically, the second transmission rod 80 is disposed within the first chamber 37. The second connector 71 is disposed within the first chamber 37. In one embodiment, the second secondary spray arm 70 is provided with a fourth connecting element 74 at the centre of rotation, which fourth connecting element 74 extends through the main spray arm 30 into the first chamber 37 and is connected to the second connecting element 71. Specifically, the fourth connecting member 74 and the second connecting member 71 are connected to each other by, for example, snap-fitting, which facilitates quick mounting of the second sub-spray arm 70 on the end of the main spray arm 30 by snap-fitting. Of course, the fourth connecting member 74 may be connected to the second connecting member 71 by other means, and is not limited in particular.

Referring to fig. 2 to 4 and fig. 7, in one embodiment, the second connecting member 71 has a fourth water flow passage communicated with the first chamber 37, and the fourth connecting member 74 has a fifth water flow passage respectively communicated with the fourth water flow passage and the third chamber 78 of the second secondary spray arm 70. In this way, the high-pressure water in the present embodiment enters the first chamber 37 through the first water flow passage 22, enters the third chamber 78 through the fourth water flow passage and the fifth water flow passage, and is discharged to the outside through the third nozzle 73 of the second sub-nozzle arm 70.

Referring to fig. 2 to 4 and 7, in one embodiment, in order to ensure the sealing performance at the joint position of the fourth connecting member 74 and the second connecting member 71, a second waterproof ring 75 is sleeved outside the fourth connecting member 74, and the second waterproof ring 75 abuts between the outer wall surface of the second auxiliary spray arm 70 and the outer wall surface of the main spray arm 30, so that a better waterproof effect can be achieved, and interference cannot be caused to the free rotation of the second auxiliary spray arm 70.

Referring to fig. 2 to 4 and 7, in one embodiment, since the second end of the fixing member 20 penetrates through the main spray arm 30 and extends outward, and the main spray arm 30 can rotate relative to the fixing member 20, a rotating sleeve 34 circumferentially disposed around the fixing member 20 is disposed on the bottom wall surface of the main spray arm 30, and when the main spray arm 30 rotates, the rotating sleeve 34 rotates circumferentially relative to the fixing member 20, so that the rotational stability of the two can be improved.

Referring to fig. 2-4 and 7, in one embodiment, the main nozzle arm 30 includes a first split cover 35 and a second split cover 36 detachably joined together. In this way, when the first transmission rod 50, the second transmission rod 80, the fixing member 20, the first connecting member 41 and the second connecting member 71 need to be installed inside the main spray arm 30, the first split cover 35 and the second split cover 36 can be disassembled, and after the first split cover 35 and the second split cover 36 are assembled together in a splicing manner after the first split cover 35 and the second split cover 36 are installed in place. Further, optionally, the first sub spray arm 40 includes a third split cover 46 and a fourth split cover 47 that are detachably joined. In addition, the second sub-spray arm 70 includes a fifth separate body cover 76 and a sixth separate body cover 77 which are detachably joined.

Referring to fig. 4 to 7, in one embodiment, the spraying device further includes a seat plate 91 for being fixedly installed on the body 60 of the dishwasher. The second end of the fixing member 20 is fixedly provided on the seat plate 91.

Referring to fig. 4 to 7, in one embodiment, the seat plate 91 is further provided with a connection tube 911 penetrating the upper and lower surfaces thereof, one end of the connection tube 911 is used for receiving external high-pressure water, and the other end of the connection tube 911 is inserted into the second end of the fixture 20 and is communicated with the first chamber 37 through the fixture 20. Specifically, in order to ensure the stability of the connection tube 911 after the connection with the fixture 20, the cross section of the connection tube 911 perpendicular to the axis thereof is, for example, triangular, quadrangular, pentagonal, elliptical, etc., and the cross section of the first water flow channel 22 of the fixture 20 perpendicular to the water flow direction thereof is, for example, triangular, quadrangular, pentagonal, elliptical, respectively, so that the stable alignment of the two can be realized without mutual rotation.

Referring to fig. 4-7, in one embodiment, the spray device further includes a snap ring 92. The snap ring 92 comprises a first sleeve 921, a limiting flange 922 circumferentially arranged around an inner wall of one end of the first sleeve 921, and at least one first limiting protrusion 923 arranged on the inner wall of the first sleeve 921.

The seat plate 91 is provided with a second sleeve 93 sleeved outside the second end of the fixing member 20, the outer wall of one end of the second sleeve 93, which is far away from the seat plate 91, is provided with at least one second limiting protrusion 931, the limiting flange 922 is respectively abutted against the second limiting protrusion 931 and the end surface of one end, which is far away from the seat plate 91, of the second sleeve 93, and the second limiting protrusion 931 is also abutted against and matched with the first limiting protrusion 923;

at least one third limiting protrusion 23 is disposed on an outer wall of the second end of the fixing member 20, a notch 932 corresponding to the third limiting protrusion 23 is further disposed on an outer wall of an end of the second sleeve 93 away from the seat plate 91, and the third limiting protrusion 23 is disposed in the notch 932.

Referring to fig. 4 to 7, in one embodiment, at least one notch 9221 (as shown in fig. 6) is formed on the position-limiting flange 922, and when the snap ring 92 rotates to a position where the notch 9221 is opposite to the third position-limiting protrusion 23, the third position-limiting protrusion 23 can pass through the notch 9221 and separate in a direction away from the seat plate 91. Thus, when the fixing member 20 and the seat plate 91 are required to be disassembled and assembled, the snap ring 92 is rotated to the position where the notch 9221 is opposite to the third limiting protrusion 23, so that the fixing member 20 and the seat plate 91 can be assembled and separated.

In one embodiment, when the snap ring 92 rotates to a position where the first limiting protrusion 923 and the second limiting protrusion 931 are staggered, the snap ring 92 can be assembled with and separated from the second sleeve 93.

Referring to fig. 2 to 4, in an embodiment, a dishwasher includes the spraying device of any one of the above embodiments, and further includes a body 60. The shower device is disposed in the inner cavity 61 of the body 60.

When the dishwasher works, the main spray arm 30 drives the first transmission rod 50 to synchronously move in the rotating process relative to the fixed part 20, the third gear moves along the first bevel gear 21 when the first transmission rod 50 moves, so that the first transmission rod 50 rotates automatically, and the fourth bevel gear 52 drives the second bevel gear 411 to rotate when the first transmission rod 50 rotates automatically, so that the first auxiliary spray arm 40 is driven to rotate; conversely, rotation of the first auxiliary spray arm 40 also causes the main spray arm 30 to rotate relative to the mounting member 20. Therefore, on one hand, when the main spray arm 30 and the first auxiliary spray arm 40 spray water, the main spray arm and the first auxiliary spray arm rotate synchronously, so that water spray cleaning in a large area can be realized, and a better cleaning effect can be ensured; on the other hand, the main spray arm 30 and the first sub spray arm 40 rotate in conjunction with each other, so that the rotational postures of the two inside the dishwasher can be easily controlled. In addition, the transmission mode through first bevel gear 21, second bevel gear 411, third bevel gear 51, fourth bevel gear 52 realizes that overall structure is simple relatively, compact structure, and the operation is reliable and stable.

It should be noted that while one of the elements described herein is connected to another element and one of the elements is attached to another element, it is understood that the two elements may be connected by fasteners such as bolts, screws, pins, rivets, etc., or may be fixedly connected by snapping, welding or integrally forming. Wherein, the integrated molding mode can adopt the processes of extrusion, casting, press fitting, injection molding and the like.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. A spray assembly, comprising:

the fixing piece (20), the fixing piece (20) is used for being fixedly arranged on a machine body (60) of the dish washing machine, and a first end of the fixing piece (20) is provided with a first bevel gear (21);

the main spray arm (30), the said fixed part (20) locates the centre of rotation of the said main spray arm (30), the said main spray arm (30) can rotate relative to the said fixed part (20);

the first auxiliary spray arm (40), the first auxiliary spray arm (40) is rotatably arranged at one end of the main spray arm (30), a first connecting piece (41) is arranged at the rotating center of the first auxiliary spray arm (40), and the first connecting piece (41) is provided with a second bevel gear (411); and

first transfer line (50), first transfer line (50) around its central axis set up with rotating on main spray arm (30), the both ends of first transfer line (50) are equipped with third umbrella tooth (51) and fourth umbrella tooth (52) respectively, third umbrella tooth (51) with first umbrella tooth (21) mesh mutually, fourth umbrella tooth (52) with second umbrella tooth (411) mesh mutually.

2. The spraying device according to claim 1, characterized in that it further comprises a second secondary spray arm (70) and a second transmission lever (80); the second auxiliary spraying arm (70) is rotatably arranged at the other end of the main spraying arm (30), a second connecting piece (71) is arranged at the rotating center of the second auxiliary spraying arm (70), and a fifth bevel gear (711) is arranged on the second connecting piece (71); the second transmission rod (80) is rotatably arranged on the main spray arm (30) around the central axis of the second transmission rod, a sixth bevel gear (81) and a seventh bevel gear (82) are respectively arranged at two ends of the second transmission rod (80), the sixth bevel gear (81) is meshed with the first bevel gear (21), and the seventh bevel gear (82) is meshed with the fifth bevel gear (711).

3. The spray device according to claim 2, characterized in that the first secondary spray arm (40) is provided with three first branch portions (42) radially arranged outwards from the centre of rotation thereof; three first branch portions (42) are uniformly arranged; the second auxiliary spray arm (70) is provided with two second branch parts (72) which extend reversely, and an inner cavity (61) of the dishwasher is in a square shape;

when the main spray arm (30) rotates to one of the side positions vertical to the inner cavity (61), one of the first branch parts (42) of the first auxiliary spray arm (40) and the main spray arm (30) run to a position completely coincident with the main spray arm (30), and the second auxiliary spray arm (70) runs to a position vertical to the main spray arm (30);

when the main spray arm (30) rotates to a diagonal line of the inner cavity (61), one first branch part (42) of the first auxiliary spray arm (40) runs to a position which is coincident with the diagonal line, so that the first auxiliary spray arm (40) is closer to one vertex angle in the direction of the diagonal line; the second secondary spray arm (70) is operated to a position coinciding with the diagonal line so that the second secondary spray arm (70) is closer to the other corner angle of the direction in which the diagonal line is located.

4. A spraying device according to claim 3, characterized in that the ratio of the number of teeth of the first (21), second (411) and fifth (711) is 4:3: 2.

5. The spraying device according to claim 2, characterized in that the upper surface of the main spraying arm (30) is provided with a first spraying hole (31), and the first spraying hole (31) is obliquely arranged towards the tangential direction of the running path of the first spraying hole; a second spray hole (43) is formed in the upper surface of the first auxiliary spray arm (40), and the second spray hole (43) is obliquely arranged towards the tangential direction of the running path of the second spray hole; and a third spray hole (73) is formed in the upper surface of the second auxiliary spray arm (70), and the third spray hole (73) is obliquely arranged towards the tangential direction of the running path of the second auxiliary spray arm.

6. The spraying device according to claim 1, characterized in that the main spraying arm (30) is provided with a first fixing block (32), the first fixing block (32) is provided with a first shaft hole adapted to the first transmission rod (50), and the first transmission rod (50) is rotatably arranged in the first shaft hole;

a first concave part is arranged on the inner wall of the first shaft hole in a surrounding manner, a first limiting part (53) is arranged on the outer wall of the first transmission rod (50) in a surrounding manner, and the first limiting part (53) is rotationally arranged in the first concave part; or a first limiting part is arranged on the inner wall of the first shaft hole in a surrounding manner, a first concave part is arranged on the outer wall of the first transmission rod (50) in a surrounding manner, and the first limiting part is rotatably arranged in the first concave part.

7. The spray assembly of claim 1, wherein a first end of said mounting member (20) is disposed within said first chamber (37) of said main spray arm (30), and a second end of said mounting member (20) is adapted to extend outwardly through said main spray arm (30) and is adapted to be fixedly mounted to said housing (60); the first transmission rod (50) is arranged in the first chamber (37); the first connection (41) is arranged in the first chamber (37).

8. The spraying device according to claim 7, characterized in that the center of rotation of the first secondary spray arm (40) is further provided with a third connecting piece (44), and the third connecting piece (44) penetrates through the main spray arm (30) and extends into the first chamber (37) to be connected with the first connecting piece (41); the fixed part (20) is provided with a first water flow channel (22) communicated with the first chamber (37); the first connecting piece (41) is provided with a second water flow channel (412) communicated with the first cavity (37), the third connecting piece (44) is provided with a third water flow channel (441), and the third water flow channel (441) is respectively communicated with the second water flow channel (412) and the second cavity (48) of the first auxiliary spray arm (40).

9. The spraying device according to claim 7, further comprising a seat plate (91) for being fixedly mounted on a body (60) of the dishwasher; the second end of the fixing member (20) is fixedly disposed on the seat plate (91).

10. A dishwasher, characterized in that it comprises a spraying device according to any one of claims 1 to 9, and further comprises a body (60); the spraying device is arranged in an inner cavity (61) of the machine body (60).

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