Spray arm assembly and dishwasher

Abstract

A spray arm assembly comprises a spray arm base (1), a driving member (2), a secondary spray arm (4), and a driven member (5). The driving member (2) is connected to the spray arm base (1). A primary spray arm (3) is rotatably connected to the spray arm base (1). The secondary spray arm (4) is in communication with the primary spray arm (3), and is rotatably connected to the primary spray arm (3) about the length direction of the primary spray arm (3). Two opposite protrusions (41) are arranged on the secondary spray arm (4). The driven member (5) is rotatably connected to the primary spray arm (3) about the thickness direction of the primary spray arm (3). The driven member (5) and the driving member (2) are engaged for transmission. The driven member (5) has a driving portion (521) facing the secondary spray arm (4). The driving portion (521) is an inclined surface inclined relative to the central axis of the driven member (5). The driving portion (521) can alternately contact the two protrusions (41) so as to drive the secondary spray arm (4) to swing back and forth about the length direction of the primary spray arm (3).

Description

Spray arm assembly and dishwasher

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent applications No. 202420587256.6 and No. 202410341196.4 filed on March 25, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure belongs to the technical field of electrical equipment, and particularly relates to a spray arm assembly and a dishwasher. Background Art

[0004] 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.

[0005] Summary of the Invention

[0006] The present disclosure provides a spray arm assembly and a dishwasher, which aim 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.

[0007] In the first aspect of the present disclosure, a spray arm assembly is provided. The spray arm assembly includes: 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, connected to 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; and a follower, rotatably connected to the main spray arm around the thickness direction of the main spray arm. The follower and the active member are engaged for transmission. The follower has a driving portion facing the auxiliary spray arm. The driving portion is an inclined surface inclined to the central axis of the follower. 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.

[0008] According to the spray arm assembly of some embodiments of the present disclosure, since the main spray arm of the spray arm assembly is rotatably connected to the spray arm seat, the active part is connected to the spray arm seat, and when the main spray arm rotates relative to the spray arm seat, the active part is fixed relative to the spray arm seat; since the follower and the active part are engaged and transmitted, the follower is rotatably connected to the main spray arm around the thickness direction of the main spray arm, and when the main spray arm rotates relative to the spray arm seat, the follower rotates around the active part while the follower rotates itself; since the follower has a driving part facing the auxiliary spray arm, the driving part also rotates synchronously with the follower, and since the driving part is an inclined plane inclined to the central axis of the follower, two opposing protrusions are provided on the auxiliary spray arm, and 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 swings back and forth around the length direction of the main spray arm to provide reciprocating clean water. The reciprocating oscillating cleaning water can flush the tableware from different angles, thereby reducing the washing dead angle and improving the cleaning effect of the tableware, thus having good practicality.

[0009] 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 receiving cavity is provided on the other side of the main spray arm for receiving the auxiliary spray arm.

[0010] In some embodiments, 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.

[0011] 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.

[0012] In some embodiments, 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.

[0013] 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 engaged 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.

[0014] 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.

[0015] In some embodiments, a first rotating shaft is provided on the main spray arm, the driven gear is rotatably connected to the first rotating shaft, and the two protrusions are oppositely arranged on two sides of the first rotating shaft.

[0016] In some embodiments, the two sides of the driving portion with a height difference are respectively arranged on two sides of the first rotating shaft.

[0017] In some embodiments, the end of the protrusion for cooperating with the driving portion is a spherical surface.

[0018] 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 spaced apart on the auxiliary arm body.

[0019] In some embodiments, a stopper is provided on the circumference 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.

[0020] In some embodiments, two or more annular protrusions are spaced apart on the circumference of the second rotating shaft, and the rotating portion is rotatably mounted on the annular protrusions.

[0021] In some embodiments, the connecting member is further provided with a connecting portion, the gap of the connecting portion is provided 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.

[0022] 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 to the rotation hole of the spray arm seat through a third rotating shaft.

[0023] In a second aspect of the present disclosure, the present disclosure further provides a dishwasher, comprising an inner container and the above-mentioned spray arm assembly, wherein the spray arm assembly is installed in the inner container.

[0024] In some embodiments of the present invention, the dishwasher comprises a secondary spray arm of a spray arm assembly that reciprocates along the length of the primary spray arm to provide reciprocating cleaning water. This reciprocating cleaning water can rinse dishes from different angles, thereby reducing blind spots and improving dishwashing efficiency, resulting in excellent practicality.

[0025] 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.

[0026] In some 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0028] FIG1 shows a schematic structural diagram of a spray arm assembly according to one or more embodiments of the present disclosure.

[0029] FIG2 shows a schematic structural diagram of the spray arm assembly in FIG1 from another perspective.

[0030] FIG. 3 shows a schematic front view of the spray arm assembly in FIG. 1 .

[0031] FIG. 4 shows a schematic top view of the spray arm assembly in FIG. 1 .

[0032] FIG5 shows an exploded view of the active components and the spray arm base of the spray arm assembly in FIG1 .

[0033] FIG. 6 shows a schematic structural diagram of active components of the spray arm assembly in FIG. 1 .

[0034] FIG. 7 shows a schematic structural diagram of a follower of the spray arm assembly in FIG. 1 .

[0035] FIG8 shows a schematic structural diagram of the main spray arm of the spray arm assembly in FIG1 .

[0036] FIG9 shows a schematic structural diagram of a spray arm assembly from another perspective according to one or more embodiments of the present disclosure.

[0037] FIG. 10 shows a schematic structural diagram of the auxiliary spray arm of the spray arm assembly in FIG. 1 .

[0038] FIG11 shows a schematic diagram of assembling the second rotating shaft of the spray arm assembly on the main spray arm according to one or more embodiments of the present disclosure.

[0039] FIG. 12 is a schematic structural diagram showing a connecting piece of the spray arm assembly in FIG. 10 .

[0040] FIG. 13 shows a schematic structural diagram of the second rotating shaft in FIG. 11 .

[0041] FIG. 14 shows a schematic structural diagram of the position-limiting member in FIG. 11 .

[0042] FIG. 15 is a schematic structural diagram of the connecting member in FIG. 12 from another perspective.

[0043] FIG16 shows a partial schematic diagram of a sub-arm body in a spray arm assembly according to one or more embodiments of the present disclosure.

[0044] FIG17 shows a schematic structural diagram of a spray arm assembly according to one or more embodiments of the present disclosure.

[0045] Reference numerals:

[0046] 1. Spray arm seat; 11. Rotation hole; 2. Active member; 21. Buckle; 3. Main spray arm; 31. First rotation axis; 32. Second rotation axis; 33. Stopper; 34. First connecting protrusion; 341. First anti-rotation column; 35. Stopper; 351. First mounting portion; 352. First avoidance groove; 353. First anti-rotation groove; 36. Annular protrusion; 37. Main spray hole; 38. Accommodating cavity; 39. Third rotation axis; 4. Auxiliary spray arm; 41. Protrusion; 42. Connector; 421. Avoidance hole; 422. Rotation portion; 423. Connecting part; 4231, second mounting part; 4232, second avoidance groove; 4233, second anti-rotation groove; 43, auxiliary arm body; 431, auxiliary water spray hole; 432, second connecting protrusion; 433, second anti-rotation column; 44, connecting column; 5, follower; 51, driven gear; 52, driving part; 521, driving part; 53, supporting part; 54, connecting sleeve; 6, connecting pipe; 61, clamping part. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to which this disclosure belongs to more clearly understand this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of this disclosure. Obviously, the described embodiments are only part of the embodiments of this disclosure, not all of them. Based on the embodiments of this disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this disclosure.

[0048] With the improvement of living standards, dishwashers, which allow for hands-free operation, are becoming a standard feature of quality living. Compared to traditional handwashing, dishwashers offer advantages such as cleanliness, sterilization, and water and labor savings. Household dishwashers typically use a spray-type washing method. Driven by a washing pump, water flows through a rotating spray arm assembly, flushing the surface of the dishes. In related technologies, the cleaning water sprayed by the dishwasher's spray arm assembly can only be sprayed in a set direction, resulting in some areas of the dishes not being sprayed by the water, affecting the dishwasher's cleaning effect.

[0049] To address the above technical issues, the present disclosure provides a spray arm assembly and a dishwasher that can provide a swinging water flow. The swinging water flow can wash dishes from different angles, thereby reducing dead corners in washing and improving the cleaning effect.

[0050] Figure 1 shows a schematic diagram of the structure of a spray arm assembly according to one or more embodiments of the present disclosure. Figure 2 shows a schematic diagram of the structure of the spray arm assembly in Figure 1 from another perspective. Figure 3 shows a schematic diagram of the front view of Figure 1. Figure 4 shows a schematic diagram of the spray arm assembly in Figure 1 from a top view. In conjunction with Figures 1-4, based on the above-described design principles, the spray arm assembly according to some embodiments of the present disclosure includes a spray arm base 1, an active member 2, a main spray arm 3, an auxiliary spray arm 4, and a driven member 5. The active member 2 is connected to the spray arm base 1. The main spray arm 3 is rotatably connected to the spray arm base 1. The auxiliary spray arm 4 is connected to the main spray arm 3 and is rotatably connected to the main spray arm 3 along its length. The auxiliary spray arm 4 is provided with two opposing protrusions 41. The driven member 5 is rotatably connected to the main spray arm 3 along its thickness. The driven member 5 and the active member 2 engage and transmit power. The driven member 5 has a drive portion 521 facing the auxiliary spray arm 4. The driving portion 521 is an inclined surface inclined to the central axis of the driven member 5 . The driving portion 521 can alternately contact the two protrusions 41 to drive the auxiliary spray arm 4 to swing back and forth along the length direction of the main spray arm 3 .

[0051] In the spray arm assembly according to some embodiments of the present disclosure, since the main spray arm 3 of the spray arm assembly is rotatably connected to the spray arm seat 1, and the active member 2 is connected to the spray arm seat 1, under the condition that the main spray arm 3 rotates relative to the spray arm seat 1, the active member 2 is fixed relative to the spray arm seat 1; since the driven member 5 and the active member 2 are engaged 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. Therefore, under the condition that the main spray arm 3 rotates relative to the spray arm seat 1, when the driven member 5 rotates around the active member 2, the driven member 5 is fixed relative to the spray arm seat 1. The follower 5 rotates; because the follower 5 has a driving portion 521 facing the auxiliary spray arm 4, the driving portion 521 also rotates synchronously with the follower 5. Moreover, because the driving portion 521 is an inclined surface inclined with respect to the central axis of the follower 5, and the auxiliary spray arm 4 is provided with two opposing protrusions 41, the inclined driving portion 521 can alternately contact the two protrusions 41 under the action of the driving portion 521, thereby lifting the two protrusions 41, so that the auxiliary spray arm 4 reciprocates along the length direction of the main spray arm 3 to provide reciprocating cleaning water. The reciprocating cleaning water can flush the dishes from different angles, thereby reducing blind spots in washing and improving the cleaning effect of the dishes, thus having excellent practicality.

[0052] FIG5 shows an exploded view of the active parts and the spray arm seat of the spray arm assembly in FIG1 . In some embodiments, the spray arm seat 1 is fixedly mounted on a corresponding carrier, and the spray arm seat 1 may be roughly columnar. The spray arm seat 1 is provided with a rotating hole 11 that passes through in the vertical direction, and the main spray arm 3 is rotatably connected to the rotating hole 11 of the spray arm seat 1 via a third rotating shaft 39. The third rotating shaft 13 is arranged along the thickness direction of the main spray arm 3. The third rotating shaft 13 is hollow, one end of which is connected to a washing pump that delivers 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 clean water can be sprayed from the main spray arm 3 and the auxiliary spray arm 4 to clean the tableware.

[0053] Figure 6 shows a schematic structural diagram of the active components of the spray arm assembly in Figure 1. In conjunction with Figures 5 and 6, in some embodiments, the active component 2 may be a driving gear connected to the outer circumferential surface of the spray arm base 1. In other embodiments, the bottom of the active component 2 may be provided with a plurality of clips 21 for securely attaching to the outer circumferential surface of the spray arm base 1. In other embodiments, the active component 2 may also be securely attached to the outer circumferential surface of the spray arm base 1 by means of a key connection or other methods, which are not limited herein.

[0054] FIG7 is a schematic structural diagram of the follower of the spray arm assembly in FIG1 . In conjunction with FIG1 to FIG4 and FIG7 , in some embodiments, the follower 5 is disposed below the main spray arm 3. The follower 5 includes a driven gear 51 and a driving member 52. The follower 5 is rotatably connected to the main spray arm 3 about the thickness direction of the main spray arm 3. The driven gear 51 and the driving member 2 are meshed and driven. When the main spray arm 3 rotates relative to the spray arm base 1, the driven gear 51 rotates about the driving member 2 while rotating on its own. The driving member 52 is connected to the end of the driven gear 51 facing the auxiliary spray arm 4. At least the portion of the driving member 52 facing the auxiliary spray arm 4 is configured as a driving portion 521. Because the driving portion 521 is an inclined surface inclined relative to the central axis of the driven member 5, the inclined driving portion 521 alternately contacts the two protrusions 41, thereby lifting the two protrusions 41 and causing the auxiliary spray arm 4 to reciprocate along the length of the main spray arm 3, thereby providing reciprocating cleaning water. The reciprocating cleaning water can rinse the dishes from different angles, thereby reducing blind spots and improving the cleaning effect of the dishes.

[0055] 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.

[0056] 7 , in some embodiments, the other side of the driving member 52 is suspended above 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 .

[0057] 5 , in some embodiments, the main spray arm 3 is provided with a first rotating shaft 31. The first rotating shaft 31 is arranged along the thickness direction of the main spray arm 3. The first rotating shaft 31 extends below the main spray arm 3. The driven gear 51 is rotatably connected to the first rotating shaft 31. Two protrusions 41 can be disposed on opposite sides of the first rotating shaft 31.

[0058] In conjunction with Figure 7, in actual application, a connecting sleeve 54 can be provided on the driven member 5. The connecting sleeve 54 is rotatably mounted on the first rotating shaft 31, and the connecting sleeve 54 is fixed through the driving member 52. The driving member 52 has two sides with a height difference, which 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 support member 53 is connected to the bottom of the driving member 52, the bottom of the support member 53 is connected to the top of the driving gear, and the side of the support member 53 is connected to the connecting sleeve 54, so that the driven gear 51, the driving member 52, the support member 53 and the connecting sleeve 54 that constitute the driven member 5 can be formed as one piece to facilitate manufacturing and assembly.

[0059] 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. In actual application, 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.

[0060] Figure 8 shows a schematic structural diagram of the main spray arm of the spray arm assembly in Figure 1 , and Figure 9 shows a schematic structural diagram of the spray arm assembly from another perspective according to one or more embodiments of the present disclosure. In conjunction with Figures 8 and 9 , in some embodiments, the main spray arm 3 may be provided with a second rotating shaft 32 , which may be arranged along the length of the main spray arm 3 .

[0061] FIG10 illustrates a schematic structural diagram of the auxiliary spray arm of the spray arm assembly in FIG1 . In conjunction with FIG10 , in some embodiments, the auxiliary spray arm 4 may include a connector 42 and an auxiliary arm body 43. The connector 42 is rotatably mounted on the second rotating shaft 32. The auxiliary arm body 43 is connected to the connector 42. A plurality of auxiliary water spray holes 431 are spaced apart on the auxiliary arm body 43 to enable the auxiliary spray arm 4 to be rotatably connected to the main spray arm 3 along its length.

[0062] FIG11 shows a schematic diagram of the assembly of the second rotating shaft on the main spray arm in the spray arm assembly according to one or more embodiments of the present disclosure. In conjunction with FIG11, in some embodiments, a stopper 33 may be provided on the circumferential surface of the second rotating shaft 32, and a limiter 35 may be provided at the end of the second rotating shaft 32. FIG12 shows a schematic diagram of the structure of the connector of the spray arm assembly in FIG10. In conjunction with FIG12, the connector 42 is provided with a rotating portion 422 that 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 connector 42, so that the connector 42 can only rotate around the second rotating shaft 32 but cannot move axially.

[0063] In some embodiments, the stopper 33 may be annular and integrally formed at the end of the second rotating shaft 32 facing away from the auxiliary spray arm 4. The stopper 35 is detachably connected to the end of the second rotating shaft 32 facing the auxiliary spray arm 4. After the rotating portion 422 of the connecting member 42 is assembled, the stopper 35 is assembled to the end of the second rotating shaft 32 facing the auxiliary spray arm 4.

[0064] Figure 13 shows a schematic structural diagram of the second rotating shaft in Figure 11, and Figure 14 shows a schematic structural diagram of the limiting member in Figure 11. In conjunction with Figures 13 and 14, in some embodiments, a plurality of first connecting protrusions 34 may be provided at intervals on the circumference 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 provided on its circumference. 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.

[0065] 13 and 14 , in some embodiments, a first avoidance groove 352 is further provided on the inner sidewall of the circumferential surface of the stopper 35 at one end facing the stopper 33, corresponding to the first connecting protrusion 34. During assembly of the stopper 35 to the second rotating shaft 32, the first avoidance groove 352 of the stopper 35 is first aligned with the first connecting protrusion 34, and the stopper 35 is assembled to the second rotating shaft 32 by axially pushing the stopper 35. The stopper 35 is then rotated so that the first connecting protrusion 34 is embedded in the corresponding first mounting portion 351, thereby securing the stopper 35 relatively securely to the second rotating shaft 32.

[0066] With reference to Figures 13 and 14 , in some embodiments, a first anti-rotation post 341 may be provided on the side of the first connecting protrusion 34 facing the stopper 33, and a first anti-rotation groove 353 may be provided on the inner sidewall of the circumference of the stopper 35. One end of the first anti-rotation groove 353 communicates with the first mounting portion 351, and the other end extends to the side of the stopper 35 facing the stopper 33. When the first connecting protrusion 34 is embedded in the corresponding first mounting portion 351, the first anti-rotation post 341 is also embedded in the corresponding first anti-rotation groove 353 to prevent rotation between the stopper 35 and the second rotating shaft 32.

[0067] In other embodiments, the limiting member 35 may also be threadedly connected to or welded on the second rotating shaft 32 , which is not limited here.

[0068] 11 to 13 , in some embodiments, the first rotating shaft 31 may be fixedly connected to the circumference of the second rotating shaft 32 , and a connecting portion 423 of the connecting member 42 is provided with an avoidance hole 421 for the first rotating shaft 31 to pass through.

[0069] 13 , in some embodiments, the end of the protrusion 41 that cooperates with the driving portion 521 may be a spherical surface, so that the protrusion 41 can make arc-shaped contact with the driving portion 521, avoiding jamming during use and improving the smoothness of the drive.

[0070] In conjunction with Figures 11 and 13 , in some embodiments, two or more annular protrusions 36 may be spaced apart on the circumference of the second rotating shaft 32. The rotating portion 422 is rotatably mounted on the annular protrusions 36. The rotating portion 422 of the connector 42 may be a hollow sleeve structure. The annular protrusions 36 provided on the circumference of the second rotating shaft 32 allow the connector 42 to be in line contact with the circumference of the second rotating shaft 32, thereby reducing the contact area between the connector 42 and the circumference of the second rotating shaft 32 and allowing the connecting portion 423 of the connector 42 to rotate smoothly on the second rotating shaft 32.

[0071] 12 , in some embodiments, the connector 42 further includes a connecting portion 423 . The connecting portion 423 is spaced apart from the outside of the stopper 35 . The auxiliary arm 43 is connected between the connecting portion 423 and the stopper 35 . The auxiliary arm 43 is rotatable relative to the stopper 35 .

[0072] Figure 15 shows a structural schematic diagram of the connecting member in Figure 12 from another perspective, and Figure 16 shows a partial schematic diagram of the auxiliary arm body in the spray arm assembly according to one or more embodiments of the present disclosure. In combination with Figures 14 and 15, in some embodiments, a plurality of second connecting protrusions 432 may be arranged at intervals on the circumference of one end of the auxiliary arm body 43 connected to the connecting portion 423. The connecting portion 423 of the connecting member 42 may also be a sleeve structure, and a second mounting portion 4231 corresponding to the second connecting protrusion 432 may be provided on its circumference. The second mounting portion 4231 may be a mounting hole or a mounting groove. 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.

[0073] 14 and 15 , in some embodiments, a second avoidance groove 4232 corresponding to the second connecting protrusion 432 is further provided on the inner sidewall of the circumference of the connecting portion 423 of the connecting member 42 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 is first aligned with the second connecting protrusion 432 on the auxiliary arm body 43, and the auxiliary arm body 43 is assembled into the connecting portion 423 by axial pushing. 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.

[0074] 14 and 15 , in some embodiments, a second anti-rotation post 433 may be further provided on the side of the second connecting protrusion 432 facing the connecting portion 423. Accordingly, a second anti-rotation groove 4233 is provided on the inner sidewall of the circumference of the connecting portion 423. One end of the second anti-rotation groove 4233 communicates with the second mounting portion 4231, and the other end extends to the side of the connecting portion 423 facing the auxiliary arm body 43. When the second connecting protrusion 432 is embedded in the corresponding second mounting portion 4231, the second anti-rotation post 433 is also embedded in the corresponding second anti-rotation groove 4233 to prevent rotation between the auxiliary arm body 43 and the connecting portion 423.

[0075] 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 connector, which is not limited here.

[0076] 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 .

[0077] 12 and 14 , in some embodiments, two connecting posts 44 may be disposed opposite each other on the circumference of the connecting portion 423 of the connector 42. The two connecting posts 44 alternately contact the driving portion 521. The contact portion of the connecting posts 44 with the driving portion 521 may be configured as the aforementioned protrusion 41.

[0078] 12 and 14 , in some embodiments, the end of the protrusion 41 that cooperates with the driving portion 521 may be a spherical surface, so that the protrusion 41 can make arc-shaped contact with the driving portion 521, avoiding jamming during use and improving the smoothness of the drive.

[0079] In other embodiments, the above-mentioned connecting column 44 may also be provided on the circumferential 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 and is an alternative solution.

[0080] In conjunction with Figures 1 to 4, in some embodiments, the middle portion of the main spray arm 3 is rotatably connected to the spray arm base 1. A main water 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 accommodate the auxiliary spray arm 4. The auxiliary spray arm 4 is provided with an auxiliary water spray hole 431, and the receiving cavity 38 is provided with an avoidance opening on the side corresponding to the auxiliary water spray hole 431. When the spray arm assembly is working, the main water spray hole 37 of the main spray arm 3 sprays clean water, and the auxiliary water spray hole 431 on the auxiliary spray arm 4 synchronously sprays clean water to form a multi-angle spray water flow. The multi-angle spray water flow can flush the tableware from different angles, thereby reducing the washing dead angle and improving the cleaning effect of the tableware, thus having good practicality.

[0081] In other embodiments, the middle portion of the main spray arm 3 is rotatably connected to the spray arm base 1, and a receiving cavity 38 is provided on both sides of the main spray arm 3 to accommodate the auxiliary spray arm 4. The auxiliary spray arm 4 is provided with an auxiliary water spray hole 431, and the side of the receiving cavity 38 corresponding to the auxiliary water spray hole 431 is provided with an avoidance opening. 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. The multi-angle spray water flow can flush the tableware from different angles, thereby reducing the dead corners of washing and improving the cleaning 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 cleaning effect of the tableware.

[0082] 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 swing angle spray water flow formed by the two auxiliary spray arms 4, it can provide spray water flow at more angles to achieve a better tableware cleaning effect.

[0083] In a second aspect of the present disclosure, the present disclosure further provides a dishwasher, which includes an inner container and the above-mentioned spray arm assembly, wherein the spray arm assembly is installed in the inner container.

[0084] The dishwasher provided by the present disclosure has a secondary spray arm 4 of the spray arm assembly that can reciprocate along the length of the primary spray arm 3 to provide reciprocating cleaning water. The reciprocating cleaning water can rinse the dishes from different angles, thereby reducing blind spots and improving the cleaning effect of the dishes, thereby providing excellent practicality.

[0085] 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.

[0086] The dishwasher provided by the present disclosure includes the spray arm assembly of any of the above technical solutions, so the dishwasher has all the beneficial effects of the spray arm assembly of the above technical solutions, which will not be described in detail here.

[0087] In some embodiments, the spray arm seat 1 of the spray arm assembly is installed at the bottom of the inner pot, and the spray arm assembly outputs an upward cleaning water flow to form the lower spray arm assembly shown in Figure 1 to clean the tableware located above the lower spray arm assembly.

[0088] FIG17 shows a schematic structural diagram of a spray arm assembly according to one or more embodiments of the present disclosure. In other embodiments, the spray arm seat of the spray arm assembly is suspended in the inner container, and the spray arm assembly outputs a downward clean water flow to form a middle spray arm assembly as shown in FIG17 to clean the tableware located below the middle spray arm assembly. In conjunction with FIG17 , the spray arm seat 1 of the middle spray arm assembly can be installed with a connecting pipe 6, and the connecting pipe 6 and the spray arm seat 1 can form an L-shaped structure. The connecting pipe 6 can be provided with a clip 61 to be installed on the basket bar of the inner container. The middle spray arm assembly is suspended in the inner container, 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.

[0089] It should be noted that a dishwasher may include only the lower spray arm assembly, only the middle spray arm assembly, or both the lower spray arm assembly and the middle spray arm assembly, which will not be described in detail here.

[0090] In the present disclosure, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being 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 the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0091] In the description of the present disclosure, 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 disclosure and simplifying the description, and do not indicate or imply that the device or element referred to 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 disclosure.

[0092] In this disclosure, unless otherwise expressly specified or limited, the terms "connect," "fix," etc. should be understood broadly. For example, "fix" can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two elements or an interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0093] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0094] Although the embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A spray arm assembly, comprising: Spray arm seat; an active component connected to the spray arm seat; a main spray arm rotatably connected to the spray arm seat; an auxiliary spray arm, which is in communication with the main spray arm and rotatably connected to the main spray arm, and has two opposing protrusions on the auxiliary spray arm; as well as The follower is rotatably connected to the main spray arm, and the follower and the active member are engaged 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, wherein: The middle part 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 port is provided on the side of the accommodating cavity corresponding to the auxiliary water spray hole.

3. The spray arm assembly according to claim 1, wherein: The middle part of the main spray arm is rotatably connected to the spray arm seat, and a accommodating cavity is 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, wherein: The driven member comprises: A driven gear is rotatably connected to the main spray arm about the thickness direction of the main spray arm, and the driven gear and the driving member are meshed and transmitted; and 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, wherein: 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 or 5, wherein: 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 oppositely arranged on two sides of the first rotating shaft.

7. The spray arm assembly according to claim 6, wherein: 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 7, wherein: The end portion of the protrusion used for matching with the driving portion is a spherical surface.

9. The spray arm assembly according to any one of claims 1 to 7, wherein: The main spray arm is provided with a second rotating shaft; The auxiliary spray arm comprises: a connecting member rotatably mounted on the second rotating shaft, wherein the two protrusions are connected to a circumferential surface of the connecting member; and 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, wherein: 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.

11. The spray arm assembly according to claim 10, wherein: 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.

12. The spray arm assembly according to claim 10 or 11, wherein: 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 to 11, wherein: The active member is connected to the outer peripheral surface of the spray arm seat. The spray arm seat is provided with a rotation hole. The main spray arm is rotatably connected to the rotation hole of the spray arm seat through a third rotating shaft.

14. A dishwasher comprising an inner container and the spray arm assembly according to any one of claims 1 to 13, wherein the spray arm assembly is installed in the inner container.

15. The dishwasher according to claim 14, wherein: 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 clean 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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