Spraying arm assembly and dish washing machine

Abstract

The utility model belongs to the technical field of electrical equipment, and particularly relates to a spraying arm assembly and a dish washing machine. The spraying arm assembly comprises a spraying arm seat, a driving part, an auxiliary spraying arm and a driven part, the driving part is connected to the spraying arm seat, the main spraying arm is rotatably connected to the spraying arm seat, the auxiliary spraying arm is communicated with the main spraying arm and rotatably connected with the main spraying arm in the length direction of the main spraying arm, two opposite protruding parts are arranged on the auxiliary spraying arm, and the driven part is arranged on the auxiliary spraying arm. The driven part is rotatably connected to the main spraying arm in the thickness direction of the main spraying arm, the driven part and the driving part are in meshing transmission, the driven part is provided with a driving part facing the auxiliary spraying arm, the driving part is an inclined face inclined to the center axis of the driven part, and the driving part can make alternate contact with the two protruding parts so as to drive the auxiliary spraying arm to swing in a reciprocating mode in the length direction of the main spraying arm. The cleaning device can provide cleaning water swinging in a reciprocating mode to wash tableware from different angles, washing dead angles are reduced, the tableware cleaning effect is improved, and the cleaning device has good practicability.

Description

Technical Field

[0001] The present application belongs to the technical field of electrical equipment, and specifically relates to a spray arm assembly and a dishwasher. Background Art

[0002] In the related art, the cleaning water sprayed by the spray arm assembly of the dishwasher can only be sprayed in a set direction, resulting in some areas of the tableware not being sprayed by the cleaning water, affecting the cleaning effect of the dishwasher. Summary of the invention

[0003] The present application provides a spray arm assembly and a dishwasher, aiming to at least to some extent solve the technical problem that some areas of tableware cannot be sprayed with clean water, thereby affecting the cleaning effect of the dishwasher.

[0004] In a first aspect of the present application, a spray arm assembly is provided, comprising: a spray arm seat; an active member connected to the spray arm seat; a main spray arm rotatably connected to the spray arm seat; an auxiliary spray arm communicated with the main spray arm and rotatably connected to the main spray arm around the length direction of the main spray arm, and two opposing protrusions are provided on the auxiliary spray arm; a follower member rotatably connected to the main spray arm around the thickness direction of the main spray arm, the follower member and the active member are meshed for transmission, the follower member has a driving portion facing the auxiliary spray arm, the driving portion is an inclined surface inclined to the central axis of the follower, and the driving portion can alternately contact the two protrusions to drive the auxiliary spray arm to swing back and forth around the length direction of the main spray arm.

[0005] The spray arm assembly provided by the present application has a main spray arm of the spray arm assembly rotatably connected to the spray arm seat, and an active member is connected to the spray arm seat. When the main spray arm rotates relative to the spray arm seat, the active member is fixed relative to the spray arm seat. Since the driven member and the active member are meshed and transmitted, the driven member is rotatably connected to the main spray arm around the thickness direction of the main spray arm. When the main spray arm rotates relative to the spray arm seat, the driven member rotates around the active member while rotating on its own. Since the driven member has a driving part facing the auxiliary spray arm, the driving part also rotates synchronously with the driven member. Since the driving part is an inclined surface inclined to the central axis of the driven member, two opposing protrusions are provided on the auxiliary spray arm. Under the action of the inclined driving part, the driving part can alternately contact the two protrusions to lift the two protrusions so that the auxiliary spray arm can swing back and forth around the length direction of the main spray arm to provide reciprocating clean water to flush tableware from different angles, reduce dead corners for washing, and improve the cleaning effect of tableware. The auxiliary spray arm has good practicality.

[0006] In some embodiments, the middle portion of the main spray arm is rotatably connected to the spray arm seat, a main water spray hole is provided on one side of the main spray arm, and a accommodating cavity is provided on the other side of the main spray arm for accommodating the auxiliary spray arm, and an auxiliary water spray hole is provided on the auxiliary spray arm, and an avoidance opening is provided on the side of the accommodating cavity corresponding to the auxiliary water spray hole.

[0007] In some embodiments, the middle portion of the main spray arm is rotatably connected to the spray arm seat, and accommodating cavities are provided on both sides of the main spray arm for accommodating the auxiliary spray arm. The auxiliary spray arm is provided with an auxiliary water spray hole, and the accommodating cavity is provided with an avoidance opening on the side corresponding to the auxiliary water spray hole.

[0008] In some embodiments, the follower includes: a driven gear, rotatably connected to the main spray arm around the thickness direction of the main spray arm, the driven gear and the active member are meshed for transmission; a driving member, connected to the end of the driven gear facing the auxiliary spray arm, and at least the portion of the driving member facing the auxiliary spray arm is configured as the driving part.

[0009] In some embodiments, one side of the driving member is connected to the driven gear, the other side of the driving member is suspended from the driven gear, and the driving member protrudes from the driven gear.

[0010] In some embodiments, a first rotating shaft is disposed on the main spray arm, the driven gear is rotatably connected to the first rotating shaft, and the two protrusions are oppositely disposed on two sides of the first rotating shaft.

[0011] In some embodiments, the two sides of the driving portion having a height difference are respectively disposed on two sides of the first rotating shaft.

[0012] In some embodiments, the end of the protrusion for cooperating with the driving portion is a spherical surface.

[0013] In some embodiments, a second rotating shaft is provided on the main spray arm; the auxiliary spray arm includes: a connecting piece, which is rotatably mounted on the second rotating shaft, and the two protrusions are connected to the circumferential surface of the connecting piece; an auxiliary arm body, which is connected to the connecting piece, and a plurality of auxiliary water spray holes are arranged at intervals on the auxiliary arm body.

[0014] In some embodiments, a stopper is provided on the circumferential surface of the second rotating shaft, a limiting member is provided at the end of the second rotating shaft, and the connecting member is provided with a rotating portion sleeved between the stopper and the limiting member.

[0015] In some embodiments, two or more annular protrusions are spaced apart on the circumferential surface of the second rotating shaft, and the rotating portion is rotatably mounted on the annular protrusions.

[0016] In some embodiments, the connecting member is further provided with a connecting portion, the connecting portion gap is arranged on the outside of the limiting member, the auxiliary arm body is connected between the connecting portion and the limiting member, and the auxiliary arm body can rotate relative to the limiting member.

[0017] In some embodiments, the active member is connected to the outer circumferential surface of the spray arm seat, the spray arm seat is provided with a rotation hole, and the main spray arm is rotatably connected in the rotation hole of the spray arm seat through a third rotating shaft.

[0018] In a second aspect of the present application, the present application further provides a dishwasher, comprising an inner tank and the above-mentioned spray arm assembly, wherein the spray arm assembly is installed in the inner tank.

[0019] The dishwasher provided in the present application has good practicality because the auxiliary spray arm of the spray arm assembly can reciprocate around the length direction of the main spray arm to provide reciprocating clean water to rinse tableware from different angles, reduce washing dead corners, and improve the cleaning effect of tableware.

[0020] In some embodiments, the spray arm seat of the spray arm assembly is installed at the bottom of the inner tank, and the spray arm assembly outputs an upward cleaning water flow; or / and, the spray arm seat of the spray arm assembly is suspended in the inner tank, and the spray arm assembly outputs a downward cleaning water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic structural diagram of a spray arm assembly in one or more embodiments of the present application is shown;

[0023] Figure 2 Shows Figure 1 A structural diagram from another perspective;

[0024] Figure 3 Shows Figure 1 A schematic diagram of the main view;

[0025] Figure 4 Shows Figure 1 A top view schematic diagram of

[0026] Figure 5 Shows Figure 1 Schematic diagram of assembly of active parts and spray arm seat;

[0027] Figure 6 Shows Figure 1 The structural diagram of the active parts in FIG.

[0028] Figure 7 Shows Figure 1 A schematic diagram of the structure of the follower;

[0029] Figure 8 Shows Figure 1 A schematic diagram of the structure of the main spray arm in FIG.

[0030] Fig. 9 A structural schematic diagram from another perspective is shown;

[0031] Fig.10 Shows Figure 1 The structural schematic diagram of the auxiliary spray arm in FIG.

[0032] Fig.11 A schematic diagram of the assembly of the second rotating shaft on the main spray arm is shown;

[0033] Fig.12 Shows Fig.10 A schematic diagram of the structure of the connecting parts in FIG.

[0034] Fig.13 Shows Fig.11 A schematic structural diagram of the second rotating shaft in FIG.

[0035] Fig.14 Shows Fig.11 A schematic diagram of the structure of the limiting member in FIG.

[0036] Fig.15 Shows Fig.12 A structural diagram from another perspective;

[0037] Fig.16 A partial schematic diagram of the auxiliary arm body is shown;

[0038] Fig.17 A schematic structural diagram of the middle spray arm assembly is shown.

[0039] Description of reference numerals:

[0040] Spray arm seat-1, rotation hole-11;

[0041] Active part-2, buckle-21;

[0042] Main spray arm 3, first rotating shaft 31, second rotating shaft 32, stopper 33, first connecting protrusion 34, first anti-rotation column 341, stopper 35, first mounting portion 351, first avoidance groove 352, first anti-rotation groove 353, annular protrusion 36, main water spray hole 37, accommodating cavity 38, third rotating shaft 39;

[0043] Auxiliary spray arm-4, protrusion-41, connecting piece-42, avoidance hole-421, rotating part-422, connecting part-423, second mounting part-4231, second avoidance groove-4232, second anti-rotation groove-4233, auxiliary arm body-43, auxiliary water spray hole-431, second connecting protrusion-432, second anti-rotation column-433, connecting column-44;

[0044] Driven member-5, driven gear-51, driving member-52, driving part-521, supporting member-53, connecting sleeve-54;

[0045] Connecting pipe-6, clamping piece-61. DETAILED DESCRIPTION

[0046] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0047] With the improvement of material living standards, dishwashers that can free your hands are gradually becoming a standard of quality life. Compared with traditional hand washing, dishwashers have the advantages of cleaning, sterilization, saving water and labor. Household dishwashers generally use a spray-type washing method. Driven by a washing pump, water flows through a rotating spray arm assembly to spray the surface of tableware. In related technologies, the clean water sprayed by the spray arm assembly of the dishwasher can only be sprayed in a set direction, resulting in some areas of the tableware not being sprayed by the clean water, affecting the cleaning effect of the dishwasher.

[0048] In response to the above technical problems, the present application provides a spray arm assembly and a dishwasher, which can provide a swinging water flow to flush tableware from different angles, reduce dead corners in washing, and improve the cleaning effect.

[0049] Figure 1 1 shows a schematic diagram of the structure of a spray arm assembly in one or more embodiments of the present application. Figure 2 Shows Figure 1 A structural diagram from another perspective, Figure 3 Shows Figure 1 The main schematic diagram of Figure 4 Shows Figure 1 Schematic diagram of top view. Figure 1-Figure 4Based on the above design ideas, the spray arm assembly provided by the present application includes a spray arm seat 1, an active part 2, a main spray arm 3, an auxiliary spray arm 4 and a driven part 5, the active part 2 is connected to the spray arm seat 1, the main spray arm 3 is rotatably connected to the spray arm seat 1, the auxiliary spray arm 4 is connected to the main spray arm 3, and is rotatably connected to the main spray arm 3 around the length direction of the main spray arm 3, two opposite protrusions 41 are provided on the auxiliary spray arm 4, the driven part 5 is rotatably connected to the main spray arm 3 around the thickness direction of the main spray arm 3, the driven part 5 and the active part 2 are meshed for transmission, the driven part 5 has a driving part 521 facing the auxiliary spray arm 4, the driving part 521 is an inclined surface inclined to the central axis of the driven part 5, and the driving part 521 can alternately contact the two protrusions 41 to drive the auxiliary spray arm 4 to swing back and forth around the length direction of the main spray arm 3.

[0050] The spray arm assembly provided by the present application has a main spray arm 3 rotatably connected to the spray arm seat 1, and a driving member 2 connected to the spray arm seat 1. When the main spray arm 3 rotates relative to the spray arm seat 1, the driving member 2 is fixed relative to the spray arm seat 1; since the driven member 5 and the driving member 2 are meshed and transmitted, the driven member 5 is rotatably connected to the main spray arm 3 around the thickness direction of the main spray arm 3. When the main spray arm 3 rotates relative to the spray arm seat 1, the driven member 5 rotates around the driving member 2 while the driven member 5 rotates on its own; since the driven member 5 has a driving force toward the auxiliary spray arm 4, the driven member 5 can rotate around the driving member 2. The driving portion 521 also rotates synchronously with the follower 5. Since the driving portion 521 is an inclined plane inclined to the central axis of the follower 5, two opposite protrusions 41 are arranged on the auxiliary spray arm 4. Under the action of the inclined driving portion 521, the driving portion 521 can contact the two protrusions 41 alternately to lift the two protrusions 41, so that the auxiliary spray arm 4 can swing back and forth around the length direction of the main spray arm 3 to provide reciprocating clean water to flush the tableware from different angles, reduce the dead corners of washing, and improve the cleaning effect of the tableware, which has good practicality.

[0051] Figure 5 Shows Figure 1 Schematic diagram of assembly of active parts and spray arm seat in, in some embodiments, the spray arm seat 1 is fixedly arranged on the corresponding carrier, the spray arm seat 1 can be roughly columnar, the spray arm seat 1 is provided with a rotation hole 11 penetrating in the vertical direction, and the main spray arm 3 is rotatably connected to the rotation hole 11 of the spray arm seat 1 through the third rotating shaft 39. The third rotating shaft 13 is arranged along the thickness direction of the main spray arm 3, and the third rotating shaft 13 is hollow, one end of which is connected to the washing pump for conveying clean water, and the other end of which is connected to the main spray arm 3. Since the auxiliary spray arm 4 is also connected to the main spray arm 3, the clean water output by the washing pump can flow into the main spray arm 3 and the auxiliary spray arm 4 in sequence, and the clean water is sprayed from the main spray arm 3 and the auxiliary spray arm 4 to clean the tableware.

[0052] Figure 6 Shows Figure 1 The structural diagram of the active parts in Figure 5 as well as Figure 6 In some embodiments, the active member 2 may be an active gear connected to the outer peripheral surface of the spray arm seat 1. In specific implementation, a plurality of buckles 21 may be provided at the bottom of the active member 2 to be fixedly connected to the outer peripheral surface of the spray arm seat 1. In other embodiments, the active member 2 may also be fixedly connected to the outer peripheral surface of the spray arm seat 1 by key connection or the like, which is not limited here.

[0053] Figure 7 Shows Figure 1 The structural diagram of the follower in Figure 1-Figure 4 as well as Figure 7 In some embodiments, the follower 5 is arranged below the main spray arm 3, and the follower 5 includes a driven gear 51 and a driving member 52, and is rotatably connected to the main spray arm 3 around the thickness direction of the main spray arm 3. The driven gear 51 and the active member 2 are meshed and transmitted. When the main spray arm 3 rotates relative to the spray arm seat 1, the driven gear 51 rotates around the active member 2 while the driven gear 51 rotates on its own; the driving member 52 is connected to the end of the driven gear 51 facing the auxiliary spray arm 4, and at least a portion of the driving member 52 facing the auxiliary spray arm 4 is configured as a driving part 521. Since the driving part 521 is an inclined surface inclined to the central axis of the follower 5, under the action of the inclined driving part 521, the driving part 521 can alternately contact the two protrusions 41 to lift the two protrusions 41, so that the auxiliary spray arm 4 can swing back and forth around the length direction of the main spray arm 3 to provide reciprocating clean water to flush the tableware from different angles, reduce the dead corners of washing, and improve the cleaning effect of the tableware.

[0054] Combination Figure 7 In some embodiments, the driving member 52 may be plate-shaped, and its projection on the driven gear 51 may be elliptical or nearly elliptical. One side of the driving member 52 is connected to the driven gear 51, and the other side of the driving member 52 protrudes from the driven gear 51, so that the driving member 52 has a driving portion 521 of sufficient size.

[0055] Combination Figure 7 In some embodiments, the other side of the driving member 52 is suspended from the driven gear 51 , and the driving member 52 and the driven gear 51 may be connected via a support member 53 to enhance the reliability of the connection between the driving member 52 and the driven gear 51 .

[0056] Combination Figure 5 In some embodiments, a first rotating shaft 31 is provided on the main spray arm 3, and the first rotating shaft 31 is provided along the thickness direction of the main spray arm 3. The first rotating shaft 31 extends to the bottom of the main spray arm 3, and the driven gear 51 is rotatably connected to the first rotating shaft 31. The two protrusions 41 can be relatively arranged on both sides of the first rotating shaft 31.

[0057] Combination Figure 7 In a specific implementation, a connecting sleeve 54 can be provided on the driven member 5, and the connecting sleeve 54 can be rotatably mounted on the first rotating shaft 31. The connecting sleeve 54 is fixed through the driving member 52. The two sides of the driving member 52 with a height difference are respectively arranged on both sides of the first rotating shaft 31. The top of the driving member 52 is a plane, which is configured as a driving part 521. The top of the supporting member 53 is connected to the bottom of the driving member 52, and the bottom of the supporting member 53 is connected to the top of the driving gear. The side of the supporting member 53 is connected to the connecting sleeve 54. The driven gear 51, the driving member 52, the supporting member 53 and the connecting sleeve 54 constituting the driven member 5 can be integrally formed to facilitate manufacturing and assembly.

[0058] It should be noted that the swing angle of the auxiliary spray arm 4 is determined by the tilt angle of the driving member 52. During implementation, the swing angle of the auxiliary spray arm 4 can be set according to actual needs, and then the tilt angle of the driving member 52 can be set, which will not be elaborated here.

[0059] Figure 8 Shows Figure 1 The schematic diagram of the main spray arm structure in Fig. 9 FIG. 2 shows a schematic diagram of the structure from another perspective. Figure 8 as well as Fig. 9 In some embodiments, a second rotating shaft 32 may be provided on the main spray arm 3 , and the second rotating shaft 32 may be provided along the length direction of the main spray arm 3 .

[0060] Fig.10 Shows Figure 1 The schematic diagram of the auxiliary spray arm in the Fig.10 In some embodiments, the auxiliary spray arm 4 may include a connecting member 42 and an auxiliary arm body 43, wherein the connecting member 42 is rotatably mounted on the second rotating shaft 32, the auxiliary arm body 43 is connected to the connecting member 42, and a plurality of auxiliary water spray holes 431 are arranged at intervals on the auxiliary arm body 43 to realize the rotatable connection between the auxiliary spray arm 4 and the main spray arm 3 around the length direction of the main spray arm 3.

[0061] Fig.11 The schematic diagram of the assembly of the second rotating shaft on the main spray arm is shown. Fig.11 In some embodiments, a stopper 33 may be provided on the circumferential surface of the second rotating shaft 32 , and a limiting member 35 may be provided at the end of the second rotating shaft 32 . Fig.12 Shows Fig.10 The structural diagram of the connector in Fig.12 The connecting member 42 is provided with a rotating portion 422 which is sleeved between the stopper 33 and the limiter 35. The stopper 33 and the limiter 35 can limit the axial freedom of the rotating portion 422 of the connecting member 42, so that the connecting member 42 can only rotate around the second rotating shaft 32 but cannot move axially.

[0062] In a specific implementation, the stopper 33 can be annular and integrally formed at the end of the second shaft 32 facing away from the auxiliary spray arm 4. The limit member 35 is detachably connected to the end of the second shaft 32 facing the auxiliary spray arm 4. After the rotating portion 422 of the connecting member 42 is assembled in place, the limit member 35 is assembled to the end of the second shaft 32 facing the auxiliary spray arm 4.

[0063] Fig.13 Shows Fig.11 The schematic diagram of the structure of the second rotating shaft in FIG. Fig.14 Shows Fig.11 The structural diagram of the limiter in Fig.13 as well as Fig.14 In some embodiments, a plurality of first connecting protrusions 34 may be arranged at intervals on the circumferential surface of the second rotating shaft 32 at one end facing the auxiliary spray arm 4. The limiting member 35 may be a sleeve structure, and a first mounting portion 351 corresponding to the first connecting protrusion 34 may be arranged on its circumferential surface. The first mounting portion 351 may be a mounting hole or a mounting groove. The first connecting protrusion 34 may be embedded in the corresponding first mounting portion 351 so that the limiting member 35 can be relatively fixedly assembled on the second rotating shaft 32.

[0064] Combination Fig.13 as well as Fig.14 In some embodiments, the inner side wall of the circumferential surface of the limit member 35 is further provided with a first avoidance groove 352 corresponding to the first connecting protrusion 34 at one end facing the stop block 33. In the process of assembling the limit member 35 to the second rotating shaft 32, the first avoidance groove 352 of the limit member 35 is first aligned with the first connecting protrusion 34, and the limit member 35 is assembled to the second rotating shaft 32 in an axial pushing manner, and then the limit member 35 is rotated so that the first connecting protrusion 34 is embedded in the corresponding first mounting portion 351, so that the limit member 35 is relatively fixedly assembled on the second rotating shaft 32.

[0065] Combination Fig.13 as well as Fig.14 In some embodiments, a first anti-rotation column 341 may also be provided on the side of the first connecting protrusion 34 facing the stop block 33. Accordingly, a first anti-rotation groove 353 is provided on the inner side wall of the circumference of the limiting member 35. One end of the first anti-rotation groove 353 is connected to the first mounting portion 351, and the other end extends to the side of the limiting member 35 facing the stop block 33. When the first connecting protrusion 34 is embedded in the corresponding first mounting portion 351, the first anti-rotation column 341 is also embedded in the corresponding first anti-rotation groove 353 to prevent rotation between the limiting member 35 and the second rotating shaft 32.

[0066] In other embodiments, the limiting member 35 may also be threadedly connected or welded to the second rotating shaft 32 , which is not limited here.

[0067] Combination Figure 11-13 In some embodiments, the first rotating shaft 31 may be fixedly connected to the circumferential surface of the second rotating shaft 32 , and accordingly, a avoidance hole 421 for the first rotating shaft 31 to pass through is provided on the connecting portion 423 of the connecting member 42 .

[0068] Combination Fig.13 In some embodiments, the end of the protrusion 41 that cooperates with the driving portion 521 can be a spherical surface, so that the protrusion 41 can make arc contact with the driving portion 521, avoiding jamming during use and improving the smoothness of driving.

[0069] Combination Fig.11 as well as Fig.13 In some embodiments, two or more annular protrusions 36 may be arranged at intervals on the circumference of the second rotating shaft 32, and the rotating portion 422 may be rotatably mounted on the annular protrusions 36. The rotating portion 422 of the connecting member 42 may be a hollow sleeve structure. The annular protrusions 36 arranged on the circumference of the second rotating shaft 32 may make the connecting member 42 and the circumference of the second rotating shaft 32 in line contact, thereby reducing the contact area between the connecting member 42 and the circumference of the second rotating shaft 32, so that the connecting portion 423 of the connecting member 42 may rotate smoothly on the second rotating shaft 32.

[0070] Combination Fig.12 In some embodiments, the connecting member 42 is further provided with a connecting portion 423, and the connecting portion 423 is gap-arranged on the outside of the limiting member 35, and the auxiliary arm body 43 is connected between the connecting portion 423 and the limiting member 35, and the auxiliary arm body 43 can rotate relative to the limiting member 35.

[0071] Fig.15 Shows Fig.12 A structural diagram from another perspective, Fig.16 A partial schematic diagram of the auxiliary arm is shown, combined with Fig.14 as well as Fig.15 In a specific implementation, a plurality of second connecting protrusions 432 may be arranged at intervals on the circumferential surface of one end of the auxiliary arm body 43 connected to the connecting portion 423. The connecting portion 423 of the connecting piece 42 may also be a sleeve structure, and a second mounting portion 4231 corresponding to the second connecting protrusion 432 may be arranged on its circumferential surface. The second mounting portion 4231 may be a mounting hole or a mounting groove, and the second connecting protrusion 432 may be embedded in the corresponding second mounting portion 4231, so that the auxiliary spray arm can be relatively fixedly assembled in the connecting portion 423.

[0072] Combination Fig.14 as well as Fig.15In some embodiments, the inner side wall of the circumferential surface of the connecting portion 423 of the connecting piece 42 is further provided with a second avoidance groove 4232 corresponding to the second connecting protrusion 432 at one end facing the auxiliary spray arm 4. In the process of assembling the auxiliary arm body 43 to the connecting portion 423, the second avoidance groove 4232 on the connecting portion 423 and the second connecting protrusion 432 on the auxiliary arm body 43 are first aligned, and the auxiliary arm body 43 is assembled into the connecting portion 423 in an axial pushing manner, and then the auxiliary arm body 43 is rotated so that the second connecting protrusion 432 is embedded in the corresponding second mounting portion 4231, so that the auxiliary arm body 43 is relatively fixedly assembled in the connecting portion 423.

[0073] Combination Fig.14 as well as Fig.15 In some embodiments, a second anti-rotation column 433 may also be provided on the side of the second connecting protrusion 432 facing the connecting part 423. Accordingly, a second anti-rotation groove 4233 is provided on the inner side wall of the circumference of the connecting part 423. One end of the second anti-rotation groove 4233 is connected to the second mounting part 4231, and the other end extends to the side of the connecting part 423 facing the auxiliary arm body 43. Under the condition that the second connecting protrusion 432 is embedded in the corresponding second mounting part 4231, the second anti-rotation column 433 is also embedded in the corresponding second anti-rotation groove 4233 to prevent rotation between the auxiliary arm body 43 and the connecting part 423.

[0074] In other embodiments, the auxiliary arm body 43 may also be threadedly connected or welded in the connecting portion 423, or the auxiliary arm body 43 may also be connected to the outside of the connecting portion 423 of the connecting member, which is not limited here.

[0075] In some embodiments, the second rotating shaft 32 is hollow so as to introduce the cleaning water introduced into the main spray arm 3 by the first rotating shaft 31 into the auxiliary spray arm 4 so as to be sprayed from the auxiliary water spraying holes 431 on the auxiliary spray arm 4 .

[0076] Combination Fig.12 as well as Fig.14 In some embodiments, two connecting columns 44 may be relatively arranged on the circumferential surface of the connecting portion 423 of the connecting member 42, and the two connecting columns 44 contact the driving portion 521 alternately, and the contact portion of the connecting column 44 with the driving portion 521 may be configured as the above-mentioned protrusion 41.

[0077] Combination Fig.12 as well as Fig.14 In some embodiments, the end of the protrusion 41 that cooperates with the driving portion 521 can be a spherical surface, so that the protrusion 41 can make arc contact with the driving portion 521, avoiding jamming during use and improving the smoothness of driving.

[0078] In other embodiments, the above-mentioned connecting column 44 may also be provided on the peripheral surface of the auxiliary spray arm 4. Compared with the technical solution of providing the connecting column 44 on the connecting portion 423 of the connecting member 42, the technical solution of providing the connecting column 44 on the auxiliary spray arm 4 requires a larger follower 5, which is an alternative solution.

[0079] Combination Figure 1-Figure 4 In some embodiments, the middle part of the main spray arm 3 is rotatably connected to the spray arm seat 1, a main spray hole 37 is provided on one side of the main spray arm 3, and a receiving cavity 38 is provided on the other side of the main spray arm 3 to receive the auxiliary spray arm 4, and an auxiliary spray hole 431 is provided on the auxiliary spray arm 4, and a side of the receiving cavity 38 corresponding to the auxiliary spray hole 431 is provided with an avoidance opening. When the spray arm assembly is working, the main spray hole 37 of the main spray arm 3 sprays clean water, and the auxiliary spray hole 431 on the auxiliary spray arm 4 sprays clean water synchronously to form a multi-angle spray water flow to flush the tableware from different angles, reduce the dead angle of washing, and improve the cleaning effect of the tableware, which has good practicality.

[0080] In other embodiments, the middle portion of the main spray arm 3 is rotatably connected to the spray arm seat 1, and a receiving cavity 38 is provided on both sides of the main spray arm 3 to accommodate the auxiliary spray arm 4, and an auxiliary water spray hole 431 is provided on the auxiliary spray arm 4, and a side of the receiving cavity 38 corresponding to the auxiliary water spray hole 431 is provided. When the spray arm assembly is working, the auxiliary water spray holes 431 on the two auxiliary spray arms 4 synchronously spray clean water to form a multi-angle spray water flow to flush the tableware from different angles, reduce the dead corners of washing, and improve the washing effect of the tableware, which has good practicality. Under the condition that the auxiliary water spray holes 431 on the two auxiliary spray arms 4 synchronously spray clean water, the two auxiliary spray arms 4 can have different swing angles to form more angles of spray water flow to improve the washing effect of the tableware.

[0081] It should also be noted that when the spray arm assembly is actually working, the cleaning water sprayed by the main spray arm 3 forms a spray water flow at at least one angle, and combined with the spray water flow at a swing angle formed by the two auxiliary spray arms 4, it can provide spray water flow at more angles to achieve a better tableware cleaning effect.

[0082] In a second aspect of the present application, the present application further provides a dishwasher, which includes an inner tank and the above-mentioned spray arm assembly, wherein the spray arm assembly is installed in the inner tank.

[0083] The dishwasher provided in the present application has good practicality because the auxiliary spray arm 4 of the spray arm assembly can reciprocate around the length direction of the main spray arm 3 to provide reciprocating clean water to rinse the tableware from different angles, reduce washing dead corners, and improve the cleaning effect of the tableware.

[0084] The dishwasher may be a household dishwasher. Of course, it may also be other cleaning equipment provided with a spray arm assembly, which is not limited here.

[0085] The dishwasher provided in the present application includes a spray arm assembly as in any of the above technical solutions, and thus the dishwasher has all the beneficial effects of the spray arm assembly of the above technical solutions, which will not be elaborated here.

[0086] In some embodiments, the spray arm assembly of the spray arm seat 1 is installed at the bottom of the inner tank, and the spray arm assembly outputs an upward clean water flow to form Figure 1 The lower spray arm assembly shown is used to clean dishes located above the lower spray arm assembly.

[0087] In some other embodiments, the spray arm seat of the spray arm assembly is suspended in the inner tank, and the spray arm assembly outputs a downward cleaning water flow to form Fig.17 The middle spray arm assembly shown in the figure is used to clean dishes located under the middle spray arm assembly. Fig.17 The spray arm seat 1 of the middle spray arm assembly can be installed with a connecting pipe 6, the connecting pipe 6 and the spray arm seat 1 can form an L-shaped structure, and a clamping part 61 can be provided on the connecting pipe 6 to be installed on the basket bar of the inner tank, so that the middle spray arm assembly is suspended in the inner tank, and the end of the connecting pipe 6 can be connected to a clean water source to provide clean water to the middle spray arm assembly.

[0088] It should be noted that, in a dishwasher, only the lower spray arm assembly mentioned above may be included, only the middle spray arm assembly mentioned above may be included, or both the lower spray arm assembly and the middle spray arm assembly may be included, which will not be elaborated herein.

[0089] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0090] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0091] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0092] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0093] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A spray arm assembly, characterized in that: The spray arm assembly comprises: Spray arm seat; An active part connected to the spray arm seat; A main spray arm is rotatably connected to the spray arm seat; An auxiliary spray arm is communicated with the main spray arm and is rotatably connected to the main spray arm, and the auxiliary spray arm is provided with two opposite protrusions; The follower is rotatably connected to the main spray arm, and the follower and the active member are meshed for transmission. The follower has a driving portion facing the auxiliary spray arm, and the driving portion is an inclined surface inclined to the central axis of the follower. When the follower rotates around the active member, the driving portion can alternately contact the two protrusions to drive the auxiliary spray arm to swing back and forth along the length direction of the main spray arm.

2. The spray arm assembly according to claim 1, characterized in that: The middle part of the main spray arm is rotatably connected to the spray arm seat, a main water spray hole is arranged on one side of the main spray arm, and a accommodating cavity is arranged on the other side of the main spray arm for accommodating the auxiliary spray arm, an auxiliary water spray hole is arranged on the auxiliary spray arm, and an avoidance opening is arranged on the side of the accommodating cavity corresponding to the auxiliary water spray hole.

3. The spray arm assembly according to claim 1, characterized in that: The middle part of the main spray arm is rotatably connected to the spray arm seat, and accommodating cavities are provided on both sides of the main spray arm for accommodating the auxiliary spray arm. The auxiliary spray arm is provided with an auxiliary water spray hole, and the accommodating cavity is provided with an avoidance opening on the side corresponding to the auxiliary water spray hole.

4. The spray arm assembly according to any one of claims 1 to 3, characterized in that: The driven member comprises: A driven gear is rotatably connected to the main spray arm around the thickness direction of the main spray arm, and the driven gear and the driving member are meshed and transmitted; A driving member is connected to the end of the driven gear facing the auxiliary spray arm, and at least a portion of the driving member facing the auxiliary spray arm is configured as the driving portion.

5. The spray arm assembly according to claim 4, characterized in that: One side of the driving member is connected to the driven gear, and the other side of the driving member protrudes from the driven gear.

6. The spray arm assembly according to claim 4, characterized in that: The main spray arm is provided with a first rotating shaft, the driven gear is rotatably connected to the first rotating shaft, and the two protrusions are arranged oppositely on two sides of the first rotating shaft.

7. The spray arm assembly according to claim 6, characterized in that: The two sides of the driving part with a height difference are respectively arranged on two sides of the first rotating shaft.

8. The spray arm assembly according to any one of claims 1 to 3 and 5 to 7, characterized in that: The end of the protrusion used for matching with the driving part is a spherical surface.

9. The spray arm assembly according to any one of claims 1 to 3 and 5 to 7, characterized in that: A second rotating shaft is provided on the main spray arm; The auxiliary spray arm comprises: A connecting member is rotatably mounted on the second rotating shaft, and the two protrusions are connected to the circumference of the connecting member; The auxiliary arm body is connected to the connecting piece, and a plurality of auxiliary water spray holes are arranged at intervals on the auxiliary arm body.

10. The spray arm assembly according to claim 9, characterized in that: A stopper is arranged on the circumferential surface of the second rotating shaft, a limiting member is arranged at the end of the second rotating shaft, and the connecting member is provided with a rotating portion sleeved between the stopper and the limiting member.

11. The spray arm assembly according to claim 10, characterized in that: Two or more annular protrusions are arranged at intervals on the circumferential surface of the second rotating shaft, and the rotating part is rotatably mounted on the annular protrusions.

12. The spray arm assembly according to claim 10 or 11, characterized in that: The connecting member is further provided with a connecting portion, the connecting portion gap is arranged outside the limiting member, the auxiliary arm body is connected between the connecting portion and the limiting member, and the auxiliary arm body can rotate relative to the limiting member.

13. The spray arm assembly according to any one of claims 1-3, 5-7 and 10-11, characterized in that: The active component is connected to the outer peripheral surface of the spray arm seat, the spray arm seat is provided with a rotation hole, and the main spray arm is rotatably connected to the rotation hole of the spray arm seat through a third rotating shaft.

14. A dishwasher, characterized in that: The dishwasher comprises an inner tank and a spray arm assembly according to any one of claims 1 to 13, wherein the spray arm assembly is installed in the inner tank.

15. The dishwasher according to claim 14, characterized in that The spray arm seat of the spray arm assembly is installed at the bottom of the inner tank, and the spray arm assembly outputs an upward cleaning water flow; or / and, The spray arm seat of the spray arm assembly is suspended in the inner tank, and the spray arm assembly outputs a downward cleaning water flow.

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