CN218128461U - Spray arm assembly and dish washing machine - Google Patents

Abstract

The utility model discloses a spray arm subassembly and dish washer, wherein the spray arm subassembly is including spouting the arm seat, first spray arm, the second spray arm, swing piece and carousel, first spray arm is connected with the spray arm seat and can rotates around the axis that spouts the arm seat, swing piece rotates and cup joints the connecting axle in first spray arm, swing piece is provided with the eccentric part along axial one end, the outer wall of eccentric part is provided with first arch, second spray arm fixed connection is in swing piece along the one end that the axial deviates from the eccentric part, the carousel is provided with the second arch, first arch receives the bellied promotion of second and makes swing piece drive the relative first spray arm rotation of second spray arm, keep away from first arch back as the second arch, swing piece drives the second under the effect of eccentric part and spouts the arm and rotate the normal position, thereby under the continuous rotation of carousel, the second spray arm can be swung around its axis constantly, and the connection between first spray arm and the second spray arm need not set up the bearing, the cost of spray arm subassembly has been reduced.

Description

Spray arm assembly and dish washing machine

Technical Field

The utility model relates to a dish washer technical field, in particular to spray arm subassembly and dish washer.

Background

In the related art, as the living standard of materials is improved, a dish washer capable of freeing both hands is gradually becoming a standard for quality life. Compared with the traditional hand washing, the dish washing machine has the advantages of cleaning, sterilizing, saving water and labor and the like. The household dish washer generally adopts a spray type washing mode, under the driving of a washing pump, water flow sprays through a rotary spray arm to wash the surface of tableware, and the washing effect of the household dish washer is closely related to the design of the spray arm. However, the spray arm assembly of the present dishwasher generally comprises a main spray arm and an auxiliary spray arm, the main spray arm and the auxiliary spray arm are connected by a bearing, and the cost of the bearing is relatively high, so that the cost of the spray arm assembly is relatively high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a spray arm subassembly that can reduce cost.

The utility model discloses still provide a dish washer that has above-mentioned spray arm subassembly in addition.

According to the utility model discloses spray arm subassembly of first aspect embodiment includes:

a spray arm seat;

the first spray arm is connected with the spray arm seat and can rotate around the axis of the spray arm seat, and the first spray arm is provided with a connecting shaft;

the swinging block is rotatably sleeved on the connecting shaft, an eccentric part is arranged at one end of the swinging block along the axial direction, and a first bulge is arranged on the outer wall of the eccentric part;

the second spray arm is fixedly connected to one end, deviating from the eccentric part, of the swing block along the axial direction;

the rotary disc is rotatably connected with the spray arm seat, a second bulge is arranged on the rotary disc, and the second bulge can be abutted against the first bulge to enable the swing block to drive the second spray arm to swing around the axis of the second spray arm.

According to the utility model discloses spray arm subassembly of first aspect embodiment has following beneficial effect at least:

through rotating the piece that sways and cup joint in the connecting axle of first spray arm, second spray arm fixed connection is in the piece that sways, when the first arch of piece that sways and the second arch of carousel contact, along with the rotation of carousel, first arch receives the bellied promotion of second and makes the piece that sways drive the relative first spray arm rotation of second spray arm, keep away from first arch back when the second arch, it drives the second spray arm and rotates the normal position under the effect of eccentric part to sway the piece, thereby under the continuous rotation of carousel, the second spray arm can be swayd around its axis constantly, thereby produce and sway rivers, improve the cleaning performance, and the connection between first spray arm and the second spray arm need not set up the bearing, can make the second spray arm rotate relative first spray arm, the cost of spray arm subassembly has been reduced.

According to some embodiments of the utility model, the second arch is followed the circumference setting of carousel, first protruding configuration with the arc form that the second arch matches.

According to some embodiments of the utility model, the second arch is provided with a plurality ofly, and is a plurality of the second arch is followed the circumference of carousel is wavy.

According to some embodiments of the utility model, the outer wall of rocking the piece is provided with first buckle, the inner wall of second spray arm be provided with first buckle complex first card hole.

According to some embodiments of the utility model, the inner wall of second spray arm is provided with the first groove of dodging, the first groove of dodging by the tip of second spray arm extends to first card hole.

According to some embodiments of the utility model, the spray arm subassembly still includes the stopper, the stopper install in the connecting axle is used for preventing it breaks away from along the axial to sway the piece the connecting axle.

According to some embodiments of the utility model, the outer wall of connecting axle is provided with the second buckle, the inner wall of stopper be provided with second buckle complex second card hole.

According to some embodiments of the present invention, the spray arm assembly further comprises a sealing member, the sealing member being disposed between the stopper and the swing block.

According to some embodiments of the utility model, the outer wall of connecting axle still is provided with the annular arch, it cup joints in the bellied outside of annular to sway the piece.

According to some embodiments of the utility model, first spray arm still be provided with surround in the supporting part of second spray arm periphery, the second spray arm is kept away from the one end of rocking block is provided with the rotation axis, the rotation axis overlap joint in the supporting part.

According to some embodiments of the present invention, the rocking block is provided with a hollow portion, the hollow portion being located at one side of the eccentric portion.

According to the utility model discloses dish washer of second aspect embodiment, include the spray arm subassembly of the first aspect embodiment of the utility model.

According to the utility model discloses dish washer of second aspect embodiment has following beneficial effect at least:

the dish washer is because adopt foretell spray arm subassembly, the spray arm subassembly is through rotating the rocking block and cup joint in the connecting axle of first spray arm, second spray arm fixed connection is in rocking the piece, when the first arch of rocking the piece and the second arch of carousel contact, along with the rotation of carousel, first arch receives the bellied promotion of second and makes the rocking block drive the relative first spray arm rotation of second spray arm, keep away from first arch back when the second arch, rocking the piece drives the second spray arm and rotates the normal position under the effect of eccentric part, thereby under the continuous rotation of carousel, the second spray arm can be swung constantly around its axis, thereby produce and sway rivers, the cleaning performance is improved, and the connection between first spray arm and the second spray arm need not set up the bearing, can make the second spray arm rotate relative first spray arm, the cost of spray arm subassembly has been reduced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic perspective view of a spray arm assembly according to some embodiments of the present invention;

fig. 2 is an exploded view of a spray arm assembly according to some embodiments of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

fig. 4 is a schematic cross-sectional view of a spray arm assembly according to some embodiments of the present invention;

FIG. 5 is an enlarged view of FIG. 4 at B;

fig. 6 is a schematic perspective view of a rocking block according to some embodiments of the present invention;

FIG. 7 is another angular schematic view of FIG. 6;

fig. 8 is a schematic perspective view of a stopper according to some embodiments of the present invention.

Reference numerals:

a first spray arm 100; a connecting shaft 110; a second buckle 111; an annular projection 112; a support wall 120;

a second spray arm 200; a first card hole 210; a rotating shaft 220;

a swing block 300; an eccentric portion 310; a first bump 311; a first clasp 312; a hollowed-out portion 320;

a turntable 400; a second projection 410;

a spray arm base 500; a central axis 510; a bearing housing 520; a center wheel 530; a planet wheel 540; a ring gear 550;

a stop block 600; a second card hole 610; a retainer ring 620; a guide block 630;

a seal 700.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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 thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly defined, words such as setting, installation, connection, assembly, and coordination should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

In the related art, as the living standard of materials is improved, a dish washer capable of freeing both hands is gradually becoming a standard for quality life. Compared with the traditional hand washing, the dish washing machine has the advantages of cleaning, sterilizing, saving water and labor and the like. The household dish washer generally adopts a spray type washing mode, under the driving of a washing pump, water flow sprays through a rotary spray arm to wash the surface of tableware, and the washing effect of the household dish washer is closely related to the design of the spray arm. However, the spray arm assembly of the present dishwasher generally comprises a main spray arm and an auxiliary spray arm, wherein the main spray arm and the auxiliary spray arm are connected by a bearing, and the cost of the bearing is relatively high, so that the cost of the spray arm assembly is relatively high.

In order to solve the at least one technical problem, the utility model provides a spray arm subassembly, second spray arm need not to adopt the bearing through rocking the swing of first spray arm relatively of piece, and the cost is lower, and the installation accuracy of rocking the piece requires lowly moreover, and the installation is more simple, and it is more convenient to install.

Referring to fig. 1 to 5, a spray arm assembly according to an embodiment of the present invention includes a spray arm base 500, a first spray arm 100, a swing block 300, a second spray arm 200, and a turntable 400. The spray arm base 500 is fixedly installed on the inner tub of the dishwasher, and the first spray arm 100 is connected to the spray arm base 500 and can rotate around the axis of the spray arm base 500. The first spray arm 100 is hollow inside, and the outer wall thereof is provided with first spray holes through which water can be sprayed to clean dishes inside the dishwasher, and the first spray arm 100 rotates around the axis of the spray arm base 500 under the action of the recoil force of the water. The first spray arm 100 is further provided with a connecting shaft 110, and the swing block 300 is sleeved on the connecting shaft 110 and can rotate around the connecting shaft 110. One end of the oscillating block 300 in the axial direction is further provided with an eccentric portion 310, the eccentric portion 310 is eccentrically arranged relative to the axis of the oscillating block 300, and the outer wall of the eccentric portion 310 is provided with a first protrusion 311. The second spray arm 200 is fixedly connected to an end of the swing block 300 axially away from the eccentric portion 310, so that the second spray arm 200 can rotate relative to the first spray arm 100 following the swing block 300. The second spray arm 200 is hollow inside and has second spray holes formed on an outer wall thereof, and water can be sprayed from the second spray holes to wash dishes inside the dishwasher. The turntable 400 is rotatably connected to the spray arm base 500, the turntable 400 is provided with a second protrusion 410, and when the second protrusion 410 abuts against the first protrusion 311, the second protrusion 410 can push the first protrusion 311 to rotate the swing block 300 relative to the first spray arm 100, so as to drive the second spray arm 200 to swing around the axis of the second spray arm 200. Therefore, when the spray arm assembly operates, the second spray arm 200 rotates around the axis of the spray arm base 500 along with the first spray arm 100 on the one hand, and swings around the axis of the second spray arm base on the other hand along with the swing block 300, so that the second spray arm 200 can spray multi-angle swing water flow, and the cleaning effect can be improved. Specifically, the spray arm assembly still includes drive mechanism, drive mechanism is provided with input and output, input and first spray arm 100 fixed connection, output and carousel 400 fixed connection, therefore, drive the input when first spray arm 100 rotates and rotate, through the drive mechanism transmission back, rethread output drives carousel 400 and rotates, carousel 400 pivoted direction and first spray arm 100 pivoted opposite direction, thereby make the protruding 410 of second of carousel 400 can contact more and promote first arch 311 so that second spray arm 200 sways more frequently. The transmission may be a planetary gear 540 transmission or other type of transmission.

Referring to fig. 2, in some embodiments, the transmission mechanism is a planetary gear 540 mechanism, which includes a central shaft 510, a bearing seat 520, a central wheel 530, a planetary gear 540 and a ring gear 550, the central shaft 510 is rotatably mounted in the inner cavity of the spray arm seat 500 and is fixedly connected to the first spray arm 100, the central wheel 530 is fixedly connected to the central shaft 510, the bearing seat 520 is fixedly connected to the outer side of the spray arm seat 500, the planetary gear 540 is rotatably mounted to the bearing seat 520 and is in meshing connection with the central wheel, the ring gear 550 is rotatably mounted to the bearing seat 520 and is in meshing connection with the planetary gear, and the turntable 400 is fixedly connected to the ring gear 550. When the first spray arm 100 rotates, the central shaft 510 is driven to rotate, the central shaft 510 drives the central wheel 530 to rotate, and then the planet wheel 540 drives the gear ring 550 to rotate, so that the turntable 400 rotates, and therefore the second protrusion 410 of the turntable 400 can continuously contact and push the first protrusion 311, so that the swing block 300 drives the second spray arm 200 to continuously swing.

The swing block 300 is rotatably sleeved on the connecting shaft 110 of the first spray arm 100, the second spray arm 200 is fixedly connected to the swing block 300, when the first protrusion 311 of the swing block 300 is in contact with the second protrusion 410 of the turntable 400, along with the rotation of the turntable 400, the first protrusion 311 is pushed by the second protrusion 410, so that the swing block 300 drives the second spray arm 200 to rotate relative to the first spray arm 100, when the second protrusion 410 is far away from the first protrusion 311, the swing block 300 drives the second spray arm 200 to rotate back to the original position under the action of the eccentric part 310, so that under the continuous rotation of the turntable 400, the second spray arm 200 can continuously swing around the axis, so that complex swing water flow is generated, the cleaning effect is improved, and the connection between the first spray arm 100 and the second spray arm 200 does not need to be provided with a bearing, i.e. the second spray arm 200 can rotate relative to the first spray arm 100, and the cost of the spray arm assembly is reduced.

Referring to fig. 2, 5 and 7, it can be understood that, in some embodiments of the present invention, the second protrusion 410 is disposed along the circumferential direction of the rotating disc 400, so that the projection profile of the second protrusion 410 on the horizontal plane is an arc shape, and the first protrusion 311 is configured to be an arc shape matching with the second protrusion 410, so that the first protrusion 311 and the second protrusion 410 are contacted and attached more sufficiently, which is beneficial to improve the stability of the swing block 300.

Referring to fig. 2, it can be understood that, in order to enable the swing block 300 to swing more frequently, in some embodiments of the present invention, the second protrusions 410 are provided in plurality, the plurality of second protrusions 410 are wavy along the circumference of the turntable 400, so that the first protrusions 311 can contact the second protrusions 410 more frequently, so that the swing block 300 can swing more frequently, so that the swing water flow of the second spray arm 200 can achieve a better washing effect, and the plurality of second protrusions 410 are wavy along the circumference of the turntable 400, so that the transition between the plurality of second protrusions 410 is more smooth, so that the second protrusions 410 can always keep in contact with the first protrusions 311, so that the swing block 300 can swing repeatedly.

Referring to fig. 2 and 6, it can be understood that, in order to be able to fast and fixedly connect the second spray arm 200 to the swing block 300, in some embodiments of the present invention, the outer wall of the swing block 300 is provided with a first buckle 312, and the inner wall of the second spray arm 200 is provided with a first clamping hole 210 matched with the first buckle 312, when installing, the second spray arm 200 is sleeved on the swing block 300, and then the swing block 300 or the second spray arm 200 is rotated, so that the first buckle 312 is clamped into the first clamping hole 210, thereby enabling the second spray arm 200 to be fast installed on the swing block 300. The end of the first buckle 312 may further be provided with a guiding end with a gradually decreasing thickness, through which the smoothness of the first buckle 312 being clamped into the first clamping hole 210 may be improved. Certainly, in order to improve the connection reliability between the second spray arm 200 and the swing block 300, a plurality of first fasteners 312 may be provided, correspondingly, the first fastener holes 210 may also be provided, the plurality of first fastener holes 210 are uniformly distributed on the inner wall of the second spray arm 200 along the circumferential direction, and the plurality of first fasteners 312 are fastened into the corresponding first fastener holes 210 in a one-to-one correspondence manner, so that the connection strength between the second spray arm 200 and the swing block 300 can be improved, and the connection reliability between the second spray arm 200 and the swing block 300 can be improved.

It can be understood that, because the outer wall of the swing block 300 is provided with the first buckle 312, in order to facilitate the second spray arm 200 to be sleeved on the swing block 300, in some embodiments of the present invention, the inner wall of the second spray arm 200 is provided with a first avoidance groove, the first avoidance groove extends from the end of the second spray arm 200 to the first card hole 210, during installation, the avoidance groove is aligned with the first buckle 312, then the second spray arm 200 is sleeved outside the swing block 300 until the first buckle 312 reaches near the first card hole 210, and then the swing block 300 is slightly rotated, so that the first buckle 312 is clamped into the first card hole 210, thereby realizing the installation of the second spray arm 200 on the swing block 300.

Referring to fig. 2 and 5, it should be noted that, in order to prevent the swinging block 300 from being separated from the connecting shaft 110, in some embodiments of the present invention, the spray arm assembly further includes a limiting block, and the limiting block is installed on the connecting shaft 110 and located between the free end of the connecting shaft 110 and the swinging block 300, so that the limiting block can block the swinging block 300 from moving to the free end, thereby preventing the swinging block 300 from being separated from the connecting shaft 110 along the axial direction. At this time, the second spray arm 200 is sleeved outside the limiting block and can rotate relative to the limiting block.

Referring to fig. 5 and 8, it can be understood that, in order to install the stopper on the connecting shaft 110 quickly, in some embodiments of the present invention, the outer wall of the connecting shaft 110 is provided with the second buckle 111, the inner wall of the stopper is provided with the second clamping hole 610 matched with the second buckle 111, during installation, the stopper is sleeved on the connecting shaft 110, and then the stopper is rotated, so that the second buckle 111 is clamped into the second clamping hole 610, thereby installing the stopper on the connecting shaft 110, and the installation is quick and convenient.

It can be understood that, because the outer wall of connecting axle 110 is provided with second buckle 111, for the outside of connecting axle 110 is located to the stopper cover in the convenience the utility model discloses an in some embodiments, the inner wall of stopper is provided with the second and dodges the groove, and the second dodges the groove and extends to second card hole 610 by the tip of stopper. During installation, the second avoiding groove is aligned to the second buckle 111, then the limiting block is sleeved in the outer side of the connecting shaft 110 until the second buckle 111 is near the second clamping hole 610, and then the limiting block is slightly rotated, so that the second buckle 111 is clamped into the second clamping hole 610, and the limiting block is installed on the connecting shaft 110.

It should be noted that, the washing water in the first spray arm 100 is transported to the second spray arm 200 through the connecting shaft 110, therefore, part of the washing water flows out from the gap between the swing block 300 and the limiting block, resulting in the waste of the washing water, for this reason, referring to fig. 2 and 5, in some embodiments of the present invention, the spray arm assembly further includes a sealing member 700, the sealing member 700 is disposed between the limiting block and the swing block 300, so as to achieve better sealing between the swing block 300 and the limiting block, which is beneficial to reducing the leakage of the washing water, and meanwhile, can prevent the dregs in the washing water from entering the gap between the swing block 300 and the connecting shaft 110, and reduce the influence of the dregs on the smoothness of the rotation of the swing block 300 relative to the connecting shaft 110. The seal 700 may be a rubber ring, or other resilient sealing ring. Specifically, referring to fig. 8, the outer wall of the limiting block is provided with a stop ring 620, the sealing member 700 abuts against one side of the stop ring 620 facing the swing block 300, and the swing block 300 presses the sealing member 700 under the action of water flow, so that the sealing member 700 deforms under stress, and better sealing is achieved. Certainly, in order to facilitate the second spray arm 200 to be sleeved on the outer side of the limiting block, the guide block 630 is arranged on one side of the baffle ring 620 departing from the sealing member 700, and the thickness of the guide block 630 is gradually reduced along the direction away from the sealing member 700, so that the second spray arm 200 can be conveniently sleeved.

It should be noted that, when the second spray arm 200 rotates around the spray arm base 500 along with the first spray arm 100, the second spray arm 200 tends to move outwards away from the connecting shaft 110, so as to drive the swing block 300 to move towards the limiting block and press the sealing member 700, thereby enabling the sealing effect between the swing block 300 and the limiting block to be better, and facilitating further reduction of the leakage amount of the washing water and the amount of the dregs entering the gap between the swing block 300 and the connecting shaft 110.

Referring to fig. 3 and 5, it can be understood that, in some embodiments of the present invention, the outer wall of the connecting shaft 110 is further provided with the annular protrusion 112, the swinging block 300 is sleeved outside the annular protrusion 112, and by being provided with the annular protrusion 112, the contact area between the swinging block 300 and the connecting shaft 110 can be reduced, thereby reducing the friction resistance of the swinging block 300 relative to the rotation of the connecting shaft 110, so that the swinging block 300 can rotate relative to the connecting shaft 110 more smoothly, and on the other hand, the annular protrusion 112 can reduce the thickness of the gap between the swinging block 300 and the connecting shaft 110, thereby being beneficial to reducing the shaking amplitude of the swinging block 300. Of course, the annular protrusion 112 may be provided in plural, and the plural annular protrusions 112 are distributed at intervals along the outer wall of the connecting shaft 110, so that the above technical effects can be further improved.

It should be noted that, because one end of the second spray arm 200 is connected to the first spray arm 100 through the swing block 300, and the second spray arm 200 is generally large in size along its axis, the bending moment at the connection between the second spray arm 200 and the first spray arm 100 is large, which causes the large stress on the swing block 300 and is easily damaged, therefore, referring to fig. 1 and 2, in some embodiments of the present invention, the first spray arm 100 is further provided with a support portion surrounding the periphery of the second spray arm 200, one end of the second spray arm 200 away from the swing block 300 is provided with a rotating shaft 220, and the rotating shaft 220 is lapped on the support portion, so that both ends of the second spray arm 200 can be supported, thereby reducing the bending moment at the connection between the second spray arm 200 and the first spray arm 100, alleviating the stress on the swing block 300, and prolonging the service life of the swing block 300.

It can be understood that in some embodiments of the utility model, the supporting part is provided with the slot, and the at least partial cartridge of rotation axis 220 is in the slot, and the second spray arm 200 is around self axis wobbling time, and rotation axis 220 can be at the slot internal rotation to can reduce rocking of rotation axis 220, improve the wobbling smooth and easy nature of second spray arm 200, avoid rotation axis 220 relative supporting part to rock too big range and cause the too big influence of rocking block 300 atress second spray arm 200 wobbling smooth and easy nature.

It should be noted that, in order to make the swing block 300 swing by a larger angle, the protrusion height of the second protrusion 410 needs to be set higher, however, when the height of the second protrusion 410 is higher, the second protrusion 410 is easily connected to the outer wall of the swing block 300 in a clamping manner, which causes the rotation disc 400 and the swing block 300 to be locked, referring to fig. 6 and 7, in some embodiments of the present invention, the swing block 300 is provided with the hollow portion 320, and the hollow portion 320 is located on one side of the eccentric portion 310, so that when the rotation disc 400 rotates towards the second spray arm 200, the second protrusion 410 may first pass through the hollow portion 320, then contact the first protrusion 311 on the side wall of the eccentric portion 310, and push the first protrusion 311 to make the swing block 300 rotate by a larger angle.

The utility model discloses dish washer of second aspect embodiment, including the inner bag and the utility model discloses the spray arm subassembly of first aspect embodiment, spray arm unit mount is on the inner bag, and the spray arm subassembly can be washd the tableware of placing in the inner bag through first spray arm 100 and second spray arm 200.

The dishwasher adopts the spray arm assembly, the spray arm assembly is rotatably sleeved on the connecting shaft 110 of the first spray arm 100 through the swing block 300, the second spray arm 200 is fixedly connected to the swing block 300, when the first protrusion 311 of the swing block 300 is contacted with the second protrusion 410 of the turntable 400, along with the rotation of the turntable 400, the first protrusion 311 is pushed by the second protrusion 410, so that the swing block 300 drives the second spray arm 200 to rotate relative to the first spray arm 100, after the second protrusion 410 is far away from the first protrusion 311, the swing block 300 drives the second spray arm 200 to rotate back under the action of the eccentric part 310, so that the second spray arm 200 can continuously swing around the axis under the continuous rotation of the turntable 400, thereby generating swing water flow, the cleaning effect is improved, and the connection between the first spray arm 100 and the second spray arm 200 does not need to be provided with a bearing, i.e. the second spray arm 200 can rotate relative to the first spray arm 100, thereby reducing the cost of the spray arm assembly.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (12)

1. Spray arm subassembly, its characterized in that includes:

a spray arm seat;

the first spray arm is connected with the spray arm seat and can rotate around the axis of the spray arm seat, and the first spray arm is provided with a connecting shaft;

the swinging block is rotatably sleeved on the connecting shaft, an eccentric part is arranged at one end of the swinging block along the axial direction, and a first bulge is arranged on the outer wall of the eccentric part;

the second spray arm is fixedly connected to one end, deviating from the eccentric part, of the swing block in the axial direction;

the rotary disc is rotatably connected with the spray arm seat, a second bulge is arranged on the rotary disc, and the second bulge can be abutted against the first bulge to enable the swing block to drive the second spray arm to swing around the axis of the second spray arm.

2. The spray arm assembly of claim 1, wherein the second protrusion is disposed along a circumference of the turntable, and the first protrusion is configured in an arc shape matching the second protrusion.

3. The spray arm assembly of claim 2, wherein the second protrusion is provided in a plurality, and the plurality of second protrusions is wavy in a circumferential direction of the turntable.

4. The spray arm assembly of claim 1 wherein the outer wall of the swing block is provided with a first snap and the inner wall of the second spray arm is provided with a first snap hole that mates with the first snap.

5. The spray arm assembly of claim 4, wherein the inner wall of the second spray arm is provided with a first avoidance groove extending from the end of the second spray arm to the first chucking hole.

6. The spray arm assembly of claim 1 further comprising a stop block mounted to the connecting shaft for preventing the wobble plate from axially disengaging the connecting shaft.

7. The spray arm assembly of claim 6, wherein the outer wall of the connecting shaft is provided with a second buckle, and the inner wall of the limiting block is provided with a second buckle hole matched with the second buckle.

8. The spray arm assembly of claim 6 further comprising a seal disposed between the stop block and the wobble block.

9. The spray arm assembly of claim 1, wherein an annular protrusion is further disposed on an outer wall of the connecting shaft, and the swing block is sleeved outside the annular protrusion.

10. The spray arm assembly of claim 1 wherein said first spray arm further comprises a support portion surrounding an outer periphery of said second spray arm, said second spray arm having a pivot shaft at an end thereof remote from said swing block, said pivot shaft overlapping said support portion.

11. The spray arm assembly of any one of claims 1 to 10 wherein the wobble block is provided with a cutout located to one side of the eccentric portion.

12. Dishwasher, characterized in that it comprises a spray arm assembly according to any of claims 1 to 11.

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