CN117752274A - Spray arm assembly and dish washer - Google Patents

Abstract

The invention discloses a spray arm assembly and a dish washing machine, wherein the spray arm assembly comprises a spray arm seat, a rotating shaft, a spray arm, a transmission mechanism and a turntable, the rotating shaft is rotatably arranged on the spray arm seat, the spray arm is rotatably connected to the end part of the rotating shaft, the transmission mechanism comprises a sun gear, a planet gear, a gear ring and a planet carrier, the turntable is fixedly arranged on the gear ring, the turntable and/or the spray arm is provided with a triggering part, when the spray arm assembly works, the spray arm follows the rotating shaft to rotate around a first axis relative to the spray arm seat, when the spray arm rotates to be in contact with the turntable, the triggering part can push the spray arm to rotate around a second axis relative to the rotating shaft so as to generate swaying spray water flow, and when the spray arm follows the rotating shaft to rotate around the spray arm seat, the turntable arranged on the gear ring follows the gear ring, so that the spray arm rotates to be in contact with the turntable, the swaying spray water flow can be more randomly swung so as to increase the complexity of the spray water flow, and the washing effect of the dish washing machine is improved.

Description

Spray arm assembly and dish washer

Technical Field

The invention relates to the technical field of washing equipment, in particular to a spray arm assembly and a dish washing machine.

Background

With the improvement of living standard, dish-washing machines capable of freeing hands are becoming standard of quality living gradually. Compared with the traditional hand washing, the dish washing machine has the advantages of cleaning, sterilizing, saving water and labor and the like. The dish washer generally adopts a spraying mode, water flow is sprayed through a rotating spray arm under the drive of a washing pump, the surface of tableware is washed, and the cleaning effect is closely related to the design of the spray arm. In the related art, the spray arm has a simpler structure, and more complex water jet cannot be realized.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the spray arm assembly, which can enable the spray arm to swing more randomly, so that more complex water jet flow can be provided.

The invention further provides a dish washer with the spray arm assembly.

A spray arm assembly according to an embodiment of the first aspect of the present invention includes:

a spray arm seat;

the rotating shaft is arranged on the spray arm seat and can rotate around a first axis relative to the spray arm seat;

the spray arm is arranged at the end part of the rotating shaft and can rotate around a second axis relative to the rotating shaft, and the first axis and the second axis form an included angle alpha;

the transmission mechanism comprises a sun gear, a planet gear, a gear ring and a planet carrier, wherein the sun gear is fixedly connected with the rotating shaft, the planet carrier is fixed relative to the spray arm seat, the gear ring can rotate relative to the planet carrier, and the planet gear is rotationally connected with the planet carrier and is meshed with the sun gear and the gear ring simultaneously;

the rotary table is fixedly arranged on the gear ring, and/or the spray arm is provided with a trigger part which is used for pushing the spray arm to rotate so as to change the direction of water jet.

The spray arm assembly provided by the embodiment of the first aspect of the invention has at least the following beneficial effects:

when the spray arm assembly works, the spray arm drives the rotating shaft to rotate around the first axis relative to the spray arm seat under the reaction force of the sprayed water flow, and when the spray arm rotates to the upper end of the rotary table to be in contact with the rotary table, the trigger part can push the spray arm, so that the spray arm rotates around the second axis relative to the rotating shaft to generate the swaying sprayed water flow. Because the spray arm follows the pivot and winds the spray arm seat pivoted, the sun gear of fixing in the pivot can follow the pivot and rotate, the sun gear passes through the planet wheel and drives the ring gear and rotate for the carousel of installing on the ring gear follows the ring gear and rotates, thereby the position that makes the spray arm rotate when the upper end of carousel and carousel contact is changeable, consequently the trigger part can promote the spray arm in different positions, make the spray arm can swing more at random in order to produce the injection rivers that sways, thereby increase the complexity of injection rivers, be favorable to improving dish washer's cleaning effect.

According to some embodiments of the invention, the planet wheels are provided with two or more, and a plurality of the planet wheels are distributed at intervals along the circumferential direction of the sun wheel.

According to some embodiments of the invention, the planet carrier is provided with a planet shaft, to which the planet wheel is rotatably mounted by means of a first bearing.

According to some embodiments of the invention, a bearing part is arranged at one end of the planet carrier, which faces the turntable, a through hole for avoiding the sun gear is formed in the middle of the bearing part, and the planet shaft is arranged at the periphery of the through hole.

According to some embodiments of the invention, the planet carrier has a cylindrical portion at an end remote from the turntable, and the ring gear is rotatably mounted to the cylindrical portion by a second bearing.

According to some embodiments of the invention, a fixed end is provided at an end of the column portion away from the turntable, and the fixed end is provided with a first clamping hole for fixing the planet carrier.

According to some embodiments of the invention, the outer peripheral wall of the gear ring is provided with a second hook, and the turntable is provided with a second clamping hole matched with the second hook.

According to some embodiments of the invention, a notch is formed on the peripheral wall of the gear ring, the second hook is disposed in the notch, a connection block matched with the notch is disposed on the peripheral wall of the turntable, and the second clamping hole is disposed on the connection block.

According to some embodiments of the invention, the rotating shaft comprises a rotating drum and a connecting seat, the connecting seat is connected to the end part of the rotating drum, a mounting shaft is arranged on the side wall of the connecting seat, and the spray arm is rotatably mounted on the mounting shaft.

According to some embodiments of the invention, two spray arms are provided, and the two spray arms are respectively rotatably installed on the installation shafts at two sides of the connecting seat.

According to some embodiments of the invention, the turntable is provided with a drain opening provided at an end of the turntable facing the spray arm.

According to some embodiments of the invention, the trigger portion is a protrusion structure, and the protrusion structure is disposed at an end of the turntable facing the spray arm.

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

The dishwasher according to the embodiment of the second aspect of the present invention has at least the following advantageous effects:

due to the adoption of the spray arm assembly, when the dish washer works, the spray arm drives the rotating shaft to rotate around the first axis relative to the spray arm seat under the reaction force of the sprayed water flow, and when the spray arm rotates to the upper end of the rotary table to be in contact with the rotary table, the trigger part can push the spray arm, so that the spray arm rotates around the second axis relative to the rotating shaft to generate swinging sprayed water flow. Because the spray arm follows the pivot and winds the spray arm seat pivoted, the sun gear of fixing in the pivot can follow the pivot and rotate, the sun gear passes through the planet wheel and drives the ring gear and rotate for the carousel of installing on the ring gear follows the ring gear and rotates, thereby the position that makes the spray arm rotate when the upper end of carousel and carousel contact is changeable, consequently the trigger part can promote the spray arm in different positions, make the spray arm can swing more at random in order to produce the injection rivers that sways, thereby increase the complexity of injection rivers, be favorable to improving dish washer's cleaning effect.

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 enlarged view at a in fig. 1;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a schematic illustration of the assembly of the drive mechanism, turntable and drum of some embodiments of the present invention;

FIG. 5 is a schematic illustration of the assembly of the drive mechanism and drum of some embodiments of the present invention;

FIG. 6 is a schematic illustration of an exploded view of a coupling seat and drum according to some embodiments of the present invention;

FIG. 7 is a schematic illustration of an exploded view of a turntable and a ring gear according to some embodiments of the present invention;

FIG. 8 is a schematic perspective view of a planet carrier according to some embodiments of the invention;

FIG. 9 is a schematic illustration I of a trigger portion pushing a spray arm to rotate when the spray arm contacts a turntable according to some embodiments of the present invention;

fig. 10 is an enlarged view at B in fig. 9;

FIG. 11 is a second schematic illustration showing the trigger portion pushing the spray arm to rotate when the spray arm contacts the turntable according to some embodiments of the present invention;

fig. 12 is an enlarged view at C in fig. 11.

Reference numerals:

a spray arm assembly 100; a spray arm 110; a nozzle 111; a third bearing 112; a turntable 120; a trigger unit 121; a drain port 122; a connection block 123; a second clamping hole 124; a planetary gear 130; a first bearing 131; a carrier 140; a receiving portion 141; a column portion 142; a planetary shaft 143; a perforation 144; a fixed end 145; a first clamping hole 146; a sun gear 150; an elastic wall 151; a ring gear 160; a second hook 161; notch 162; a second bearing 163; a connection base 170; a mounting shaft 171; a fixed block 172; a drum 180; a catching groove 181; a spray arm base 190; a first hook 191; a blocking piece 192; an inner container 200; a first axis 300; a second axis 400.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed 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 explicitly defined otherwise, terms such as arrangement, mounting, connection, assembly, cooperation, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.

A dish washer is a device capable of automatically washing dishes such as bowls, chopsticks, plates, dishes, knives, forks and the like. The full-automatic dish-washing machine on the market can be divided into two types, namely household dish-washing machine and commercial dish-washing machine, the household dish-washing machine is suitable for most families at present, the dish-washing machine can replace hand washing, hands of people are liberated, and the dish-washing machine is gradually becoming standard of quality life. Compared with the traditional dish and chopsticks washing by hand, the dish washing machine has the advantages of cleaning, sterilizing, saving water and labor and the like. The dish washer is provided with the spray arm subassembly generally, and the spray arm subassembly includes spray arm seat and spray arm, has offered the orifice on the spray arm, and during operation of dish washer, washing rivers are spouted from the orifice under the drive of the pressurization equipment such as wash pump and form the rivers that spray, and the rivers produce the reaction force to the spray arm for the spray arm can rotate around the spray arm seat, thereby makes the rivers that spray can carry out cyclic reciprocating's washing to the tableware of dish washer inside. In the related art, the water jet generated by the spray arm is simpler, and more complex water jet cannot be realized.

In order to solve at least one of the above problems, the present invention provides a spray arm assembly capable of realizing more complex water jet, thereby further improving the cleaning effect.

Referring to fig. 1, a spray arm assembly 100 of a dishwasher according to an embodiment of the first aspect of the present invention is provided, and the dishwasher generally has an upper spray arm assembly capable of washing dishes from above and a lower spray arm assembly capable of washing dishes from below, and the spray arm assembly 100 of the first aspect of the present invention may be used as an upper spray arm assembly or a lower spray arm assembly, and the following description will be given by taking the spray arm assembly as an example.

Referring to fig. 2 and 3, the spray arm assembly 100 includes a spray arm seat 190, a rotating shaft, a spray arm 110, a turntable 120 and a transmission mechanism, the spray arm seat 190 is in a cylindrical structure, which can be fixedly disposed on a liner 200 of a dishwasher, etc., a through center hole is disposed at the center of the spray arm seat 190, the lower end of the rotating shaft is inserted into the center hole, and the rotating shaft can rotate relative to the spray arm seat 190 about a first axis 300, which may be the axis of the spray arm seat itself. The inside of the rotating shaft is provided with a water delivery channel which is axially arranged, and the water delivery channel extends to the upper end of the rotating shaft. The spray arm 110 may be provided with one or more spray arms 110, and the spray arm 110 is mounted at an upper end of the rotating shaft and can swing around a second axis 400 relative to the rotating shaft, and the second axis 400 may be an axis of the spray arm 110 itself. The first axis 300 and the second axis 400 have an included angle α, α > 0 °, so that the first axis 300 and the second axis 400 are not parallel or coincident, and therefore, the spray arm 110 rotates around the first axis 300 along with the rotating shaft, and when the spray arm rotates around the second axis 400, the spray arm 110 swings, so that the movement track of the spray arm is more complex. Of course, in practice, α may be about 90 °, i.e., the first axis 300 and the second axis 400 are substantially perpendicular, so that the swing effect of the spray arm 110 is more remarkable. The spray arm 110 has a cavity therein, which communicates with the water delivery passage of the spindle. The outer wall of the spray arm 110 is provided with a plurality of spray holes 111 communicated with the cavity, washing water can enter the cavity through the water delivery channel, and then is sprayed out of the spray holes 111 to form water jet, and the water jet can clean tableware or other objects to be cleaned. Because the water jet has a certain water pressure, the water jet can generate a reaction force to the spray arm 110 after being sprayed out of the spray hole 111, and the spray arm 110 can drive the rotating shaft to rotate relative to the spray arm seat 190 under the reaction force of the water jet, so that the water jet can circularly spray and clean tableware, and the cleaning effect is improved. It will be appreciated that in order to further enhance the cleaning effect, the nozzles 111 may be divided into several groups oriented differently, thereby enhancing the coverage of the injected water flow and enhancing the cleaning effect.

Referring to fig. 4 and 5, the transmission mechanism is a planetary gear transmission mechanism, the transmission ratio of which can be actually set according to needs, and the planetary gear transmission mechanism has a compact structure and good bearing capacity, and can bear high torque, so that the turntable 120 can be driven to smoothly rotate. Specifically, the planetary gear transmission mechanism is disposed below the spray arm 110, and includes a sun gear 150, a planet gear 130, a gear ring 160, and a planet carrier 140, where the sun gear 150 and the planet gear 130 are gears. The sun gear 150 is fixedly mounted on the outer wall of the rotating shaft, and the planet carrier 140 is fixedly mounted on the inner container 200 or the spray arm seat 190 or other fixing structures of the dishwasher, so that the planet carrier 140 can be fixed relative to the spray arm seat 190 when the rotating shaft rotates around the spray arm seat 190. The gear ring 160 may be sleeved on the outer wall of the planet carrier 140 or the outer wall of the spray arm seat 190, and the gear ring 160 may rotate relative to the planet carrier 140. The planet wheel 130 is mounted on the planet carrier 140 and can rotate relative to the planet carrier 140, and two sides of the planet wheel 130 are respectively connected with the sun wheel 150 and the gear ring 160 in a meshed manner, so that when the sun wheel 150 rotates, the gear ring 160 can be driven to rotate reversely through the planet wheel 130. Specifically, the sun gear 150 can be mounted on the outer wall of the rotating shaft in a clamping manner, for example, a clamping block is arranged on the inner wall of the sun gear 150, a clamping groove is formed in the outer wall of the rotating shaft, and the sun gear 150 can be mounted on the rotating shaft by clamping the clamping block into the clamping groove.

The rotary table 120 is fixedly mounted on the upper end of the gear ring 160, a trigger portion 121 is disposed on the upper end of the rotary table 120, and when the spray arm 110 rotates to the upper end of the rotary table 120, the trigger portion 121 can push the spray arm 110 to swing around the second axis 400, so that the water spraying direction of the water jet sprayed from the spray hole 111 of the spray arm 110 is changed. Referring to fig. 9 to 12, specifically, the trigger portion 121 may be a protrusion structure provided on an upper end surface of the turntable 120, or a pin or the like, which can push the spray arm 110 when touching the spray arm 110, so that the spray arm 110 rotates around the second axis 400, thereby generating a swinging water jet. Of course, it should be noted that the trigger portion 121 may be disposed at the lower end of the spray arm 110, or the trigger portion 121 may be disposed at both the upper end of the turntable 120 and the lower end of the spray arm 110, so that the trigger portion 121 may push the spray arm 110 to rotate around the second axis 400 when the spray arm 110 rotates to the upper end of the turntable 120. It can be appreciated that the number of the triggering parts 121 may be one or more, for example, the upper end surface of the turntable 120 may be provided with five protruding structures at intervals along the circumferential direction, and each protruding structure forms one triggering part 121, so that the spray arm 110 can randomly swing at more different positions, so that the water jet is more complex, and the cleaning effect is further improved.

When the spray arm assembly 100 works, the spray arm 110 drives the rotating shaft to rotate around the first axis 300 relative to the spray arm seat 190 under the reaction force of the spray water flow, and when the spray arm 110 rotates until the upper end of the turntable 120 contacts with the turntable 120, the trigger part 121 can push the spray arm 110, so that the spray arm 110 rotates around the second axis 400 relative to the rotating shaft to generate a swinging spray water flow. Because the spray arm 110 rotates around the spray arm seat 190 along with the rotating shaft, the sun gear 150 fixed on the rotating shaft can rotate along with the rotating shaft, and the sun gear 150 drives the gear ring 160 to rotate through the planet gear 130, so that the turntable 120 installed on the gear ring 160 rotates along with the gear ring 160, and the position when the spray arm 110 rotates to the upper end of the turntable 120 and contacts with the turntable 120 is changed, the trigger part 121 can push the spray arm 110 at different positions, so that the spray arm 110 can swing more randomly to generate swinging spray water flow, thereby increasing the complexity of the spray water flow and being beneficial to improving the cleaning effect of the dish washer.

Referring to fig. 5, it may be appreciated that, in some embodiments of the present invention, in order to make the transmission of power smoother, the planetary gears 130 may be provided with two or more planetary gears 130 spaced along the circumference of the sun gear 150, so that the sun gear 150 can transmit power to the ring gear 160 through the plurality of planetary gears 130, so that the process of the rotating shaft transmitting the power to the turntable 120 through the transmission mechanism is smoother, which is beneficial to improving the stability and reliability of the operation of the transmission mechanism. Specifically, the plurality of planetary gears 130 may be uniformly spaced apart from each other in the circumferential direction, or may be unevenly spaced apart from each other. When the plurality of planetary gears 130 are uniformly distributed at intervals along the circumferential direction, the distribution of power among the plurality of planetary gears 130 is also more uniform, which is beneficial to further improving the working stability of the transmission mechanism. For example, two planetary gears 130 are provided, the included angle between two planetary gears 130 is 180 °, or three planetary gears 130 are provided, and the included angle between two adjacent planetary gears 130 is 120 °.

Referring to fig. 5 and 8, it can be appreciated that in some embodiments of the present invention, in order to allow the planetary gears 130 to be conveniently mounted on the planetary carrier 140, the planetary carrier 140 is provided with planetary shafts 143 at one end toward the turntable 120, the number of the planetary shafts 143 is the same as that of the planetary gears 130, and the planetary gears 130 are rotatably mounted on the outer walls of the planetary shafts 143. In manufacturing the carrier 140, the carrier shaft 143 may be integrally formed on the end surface of the carrier 140 by injection molding or the like, or the carrier 140 and the carrier shaft 143 may be separately manufactured, and then the carrier shaft 143 may be fixed to the carrier 140 by welding or fastening or the like.

Referring to fig. 3 and 5, it can be appreciated that in some embodiments of the present invention, the transmission mechanism further includes a first bearing 131, and the planet 130 is rotatably mounted on the planet shaft 143 through the first bearing 131, so that friction between the planet 130 and the planet shaft 143 can be reduced, which is beneficial to improving smoothness of rotation of the planet 130. The first bearing 131 may be a ball bearing, and the ball bearing has relatively small friction resistance and reliable performance, and when in installation, an inner ring of the ball bearing may be fixed on an outer wall of the planetary shaft 143, and the planetary gear 130 may be fixed on an outer ring of the ball bearing, so that the planetary gear 130 may be rotatably installed on the planetary shaft 143 through the ball bearing.

Referring to fig. 5 and 8, it can be appreciated that in some embodiments of the present invention, the planet carrier 140 has a receiving portion 141 at an end facing the turntable 120, and the planet shaft 143 is disposed at the receiving portion 141. The receiving portion 141 has a substantially annular shape, and has a hole 144 formed in the middle thereof for receiving the sun gear 150, and a plurality of planetary shafts 143 are provided at intervals around the outer periphery of the hole 144. During installation, after the sun gear 150 is fixed on the outer wall of the rotating shaft, the planet carrier 140 is sleeved on the outer side of the sun gear 150, and the sun gear 150 is positioned in the through hole 144 of the bearing part 141, so that the planet gears 130 mounted on the planet shafts 143 on the periphery of the through hole 144 can be well meshed with the sun gear 150.

Referring to fig. 3, 5 and 8, it can be appreciated that in some embodiments of the present invention, in order to mount the ring gear 160 and enable the ring gear 160 to rotate relative to the carrier 140, one end of the carrier 140 away from the turntable 120 has a cylindrical portion 142, the interior of the cylindrical portion 142 is hollow to avoid the sun gear 150 and the spray arm base 190, the end of the cylindrical portion 142 facing one end of the turntable 120 is connected to the bottom of the receiving portion 141, the ring gear 160 is mounted on the outer wall of the cylindrical portion 142 through a second bearing 163, so that the ring gear 160 can be rotatably mounted to the cylindrical portion 142, while the receiving portion 141 can function to position the second bearing 163, the second bearing 163 is sleeved by the lower end of the cylindrical portion 142 and then moved to the receiving portion 141 when mounted so that the second bearing 163 abuts against the bottom of the receiving portion 141, thereby enabling the second bearing 163 to be mounted in place. In particular, the second bearing 163 may be a ball bearing having good rotational performance and small rolling friction. The inner ring of the second bearing 163 is fixedly mounted to the outer wall of the cylindrical portion 142, and the ring gear 160 is fixedly mounted to the outer ring of the second bearing 163, so that the ring gear 160 can rotate around the cylindrical portion 142 through the second bearing 163. Specifically, in order to enable the ring gear 160 to be well mounted on the outer ring of the second bearing 163, the bottom of the sidewall of the ring gear 160 may be provided with a flange protruding toward the cylindrical portion 142, and the flange abuts against the lower end of the outer ring of the second bearing 163, so that the movement of the ring gear 160 in the axial direction of the second bearing 163 may be restricted, unnecessary shake of the ring gear 160 is reduced, and the stability of the ring gear 160 during rotation is improved.

Referring to fig. 2 and 8, it can be appreciated that, in order to enable the planet carrier 140 to be fixed relative to the spray arm base 190, in some embodiments of the present invention, an end of the column portion 142 away from the receiving portion 141 is provided with a fixing end 145, the fixing end 145 is provided with a first clamping hole 146, the inner container 200 of the dishwasher is provided with a first clamping hook 191, and the first clamping hook 191 is located at the periphery of the bottom of the spray arm base 190. When in installation, the first clamping hooks 191 are clamped into the first clamping holes 146, so that the planet carrier 140 can be installed and fixed relative to the spray arm seat 190. Of course, the first hook 191 may be disposed on the outer wall of the boom seat 190, so that the carrier 140 may be mounted on the boom seat 190. It should be noted that, in order to improve the stability of the installation of the planet carrier 140, a plurality of fixing ends 145 may be provided according to actual needs. For example, in a specific embodiment, two fixing ends 145 are provided, and the two fixing ends 145 are symmetrically disposed on two sides of the column portion 142, each fixing end 145 is provided with one first clamping hole 146, and correspondingly, two first hooks 191 are also provided, and when in installation, the two first hooks 191 are respectively clamped into the corresponding first clamping holes 146, so that the planet carrier 140 can be well fixed.

Referring to fig. 2, in order to further improve the stability of the installation of the planet carrier 140, the inner container 200 is further provided with a blocking piece 192, the blocking piece 192 is located at the outer side of the first hook 191, and the blocking piece 192 abuts against the side wall of the fixed end 145, so that the blocking piece 192 can cooperate with the first hook 191 to prevent the rotation of the fixed end 145, so that the installation of the planet carrier 140 is more stable, and the shaking of the planet carrier 140 is reduced. Of course, a plurality of blocking blocks 192 may be provided, and blocking blocks 192 are provided at both ends of each fixed end 145 in the rotation direction, so that the fixed ends 145 are limited by the blocking blocks 192 when they rotate clockwise or counterclockwise.

Referring to fig. 4 and 7, it can be understood that, in order to facilitate the installation of the turntable 120 on the gear ring 160, in some embodiments of the present invention, the gear ring 160 is provided with the second hook 161, and the turntable 120 is provided with the second clamping hole 124, and when installed, the turntable 120 is pressed into the gear ring 160, so that the second hook 161 is clamped in the second clamping hole 124, thereby installing the turntable 120 on the gear ring 160, which is very convenient to operate. Of course, a plurality of second hooks 161 can be provided, and a plurality of second clamping holes 124 are correspondingly provided, so that the stressed connection points between the turntable 120 and the gear ring 160 are more, and the connection is more reliable.

Referring to fig. 7, specifically, a notch 162 is formed on the peripheral wall of the ring gear 160, a second hook 161 is disposed in the notch 162, a connecting block 123 extending downward is disposed on the peripheral wall of the turntable 120, a second clamping hole 124 is formed in the middle of the connecting block 123, during installation, the connecting block 123 is placed in the notch 162 to enable the second hook 161 to be clamped into the second clamping hole 124, and at this time, the connecting block 123 is basically filled in the notch 162, so that the overall structure of the turntable 120 and the ring gear 160 is more compact, the overall volume of the turntable is reduced, and meanwhile, the second hook 161 and the connecting block 123 can be prevented from protruding from the peripheral wall of the ring gear 160, which is beneficial to reducing the influence of the second hook 161 and the connecting block 123 on other components. In addition, when the gear ring 160 rotates, the gear ring 160 can cooperate with the second hook 161 through the inner wall of the notch 162 to push the connecting block 123 together, so that the turntable 120 can rotate along with the gear ring 160, thereby being beneficial to reducing the stress of the second hook 161, preventing the second hook 161 from being broken easily due to overlarge stress, especially when the gear ring 160 starts rotating, the acceleration of the gear ring 160 is larger, the thrust of the gear ring 160 to the turntable 120 is also larger, part of the thrust is transmitted to the outer side wall of the connecting block 123 through the inner wall of the notch 162, and the other part of the thrust is transmitted to the inner side wall of the connecting block 123 through the second hook 161, so that the stress condition of the second hook 161 can be reduced, the service life of the second hook 161 is prolonged, and meanwhile, the stress distribution of the connecting block 123 is more uniform, and the service life of the connecting block 123 is beneficial to be prolonged.

Referring to fig. 3 and 6, it can be understood that, since the lower end of the rotating shaft is inserted into the central hole of the spray arm seat 190, and the upper end of the rotating shaft needs to extend out of the central hole of the spray arm seat 190 to be rotationally connected with the spray arm 110, the transmission mechanism is also sleeved outside the rotating shaft. In order to facilitate the installation connection of the rotating shaft and other components and improve the installation efficiency, in some embodiments of the present invention, the rotating shaft includes a rotating drum 180 and a connection seat 170, the rotating drum 180 is inserted into a central hole of the spray arm seat 190, the connection seat 170 is located outside the central hole of the spray arm seat 190 and is fixedly connected with the rotating drum 180, an installation shaft 171 is disposed at a side of the connection seat 170, and the spray arm 110 is rotatably installed on the installation shaft 171 through a third bearing 112. Specifically, the outer wall of the lower end of the connecting seat 170 is provided with a fixing block 172, the inner wall of the upper end of the rotating cylinder 180 is provided with a buckling groove 181, and the fixing block 172 is buckled in the buckling groove 181, so that the connecting seat 170 can be fixed at the upper end of the rotating cylinder 180. In the installation, the transmission mechanism is sleeved on the outer wall of the rotary drum 180, then the rotary drum 180 is inserted into the central hole of the spray arm seat 190, the spray arm 110 is installed on the installation shaft 171 of the connection seat 170, and then the connection seat 170 is installed on the upper end of the rotary drum 180. Because the height distance between the connecting seat 170 and the liner 200 is smaller, the spray arm 110 is firstly installed on the connecting seat 170 in the above operation, and then the connecting seat 170 is installed on the upper end of the rotating drum 180, so that the installation operation is more convenient, and the installation efficiency is improved.

In the above embodiment, the sun gear 150 is fixed on the outer wall of the drum 180, meanwhile, two elastic arms are provided at the lower end of the sun gear 150, an annular protrusion is provided on the outer wall of the spray arm seat 190, and the elastic wall 151 is clamped at the lower end of the annular protrusion, so that the limiting effect can be achieved, and the drum 180 is prevented from falling out from the central hole of the spray arm seat 190 under the action of water pressure.

Referring to fig. 1 and 3, it can be appreciated that, in some embodiments of the present invention, in order to further improve the cleaning effect of the spray arm assembly 100, the spray arm assembly 100 is provided with two spray arms 110, and the two spray arms 110 are respectively mounted on two sides of the connection seat 170, so that the coverage of the sprayed water flow can be improved, which is beneficial to improving the cleaning effect, and the two spray arms 110 can be respectively contacted with the trigger point of the turntable 120, so that the two spray arms 110 can respectively generate the swinging water flow, and meanwhile, the swinging water flows of the two spray arms 110 are not synchronously generated, which can further improve the complexity of the sprayed water flow, and is beneficial to further improving the cleaning effect.

Referring to fig. 2 and 4, it can be appreciated that in some embodiments of the present invention, the turntable 120 is further provided with a plurality of water discharge openings 122, and the plurality of water discharge openings 122 can be circumferentially distributed at an end of the turntable 120 facing the spray arm 110. When the washing water drops on the upper end of the turn plate 120, the washing water can be discharged through the drain port 122, thereby preventing accumulation of the washing water on the upper end of the turn plate 120. Specifically, the drain port 122 is located at a lower position of the upper end of the turntable 120, so that the washing water dropped on the upper end of the turntable 120 can be rapidly drained by flowing into the drain port 122 under the action of gravity.

The dishwasher according to the second aspect of the present invention includes the spray arm assembly 100 according to the first aspect of the present invention, when the spray arm assembly 100 is operated, the spray arm 110 drives the spindle to rotate about the first axis 300 relative to the spray arm seat 190 under the reaction force of the sprayed water flow, and when the spray arm 110 rotates until the upper end of the turntable 120 contacts the turntable 120, the trigger part 121 can push the spray arm 110, so that the spray arm 110 rotates about the second axis 400 relative to the spindle to generate the swinging sprayed water flow. Because the spray arm 110 rotates around the spray arm seat 190 along with the rotating shaft, the sun gear 150 fixed on the rotating shaft can rotate along with the rotating shaft, and the sun gear 150 drives the gear ring 160 to rotate through the planet gear 130, so that the turntable 120 installed on the gear ring 160 rotates along with the gear ring 160, and the position when the spray arm 110 rotates to the upper end of the turntable 120 and contacts with the turntable 120 is changed, the trigger part 121 can push the spray arm 110 at different positions, so that the spray arm 110 can swing more randomly to generate swinging spray water flow, thereby increasing the complexity of the spray water flow and being beneficial to improving the cleaning effect of the dish washer.

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 within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.

Claims (13)

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

a spray arm seat;

the rotating shaft is arranged on the spray arm seat and can rotate around a first axis relative to the spray arm seat;

the spray arm is arranged at the end part of the rotating shaft and can rotate around a second axis relative to the rotating shaft, and the first axis and the second axis form an included angle alpha;

the transmission mechanism comprises a sun gear, a planet gear, a gear ring and a planet carrier, wherein the sun gear is fixedly connected with the rotating shaft, the planet carrier is fixed relative to the spray arm seat, the gear ring can rotate relative to the planet carrier, and the planet gear is rotationally connected with the planet carrier and is meshed with the sun gear and the gear ring simultaneously;

the rotary table is fixedly arranged on the gear ring, and/or the spray arm is provided with a trigger part which is used for pushing the spray arm to rotate so as to change the direction of water jet.

2. The spray arm assembly of claim 1, wherein the planet gears are provided in two or more, a plurality of the planet gears being spaced apart along the circumference of the sun gear.

3. Spray arm assembly according to claim 1 or 2, characterized in that the planet carrier is provided with a planet shaft to which the planet wheel is rotatably connected by means of a first bearing.

4. The spray arm assembly of claim 3, wherein one end of the planet carrier facing the turntable is provided with a receiving portion, a through hole for avoiding the sun gear is formed in the middle of the receiving portion, and the planet shaft is disposed at the periphery of the through hole.

5. The spray arm assembly of any one of claims 1 to 4, wherein an end of the planet carrier remote from the turntable has a cylindrical portion, the ring gear being rotatably mounted to the cylindrical portion by a second bearing.

6. The spray arm assembly of claim 5, wherein an end of the column portion remote from the turntable is provided with a fixed end provided with a first clamping hole for fixing the planet carrier.

7. The spray arm assembly of any one of claims 1 to 6, wherein the peripheral wall of the gear ring is provided with a second catch, and the turntable is provided with a second catch hole that mates with the second catch.

8. The spray arm assembly of claim 7, wherein a notch is formed in the peripheral wall of the gear ring, the second hook is disposed in the notch, a connection block matched with the notch is disposed in the peripheral wall of the turntable, and the second clamping hole is disposed in the connection block.

9. The spray arm assembly of any one of claims 1 to 8, wherein: the rotating shaft comprises a rotating drum and a connecting seat, the connecting seat is connected to the end part of the rotating drum, a mounting shaft is arranged on the side wall of the connecting seat, and the spray arm is rotatably mounted on the mounting shaft.

10. The spray arm assembly of claim 9, wherein two spray arms are provided, and two spray arms are respectively rotatably mounted on mounting shafts on both sides of the connection base.

11. The spray arm assembly of any one of claims 1 to 10, wherein the turntable is provided with a drain opening provided at an end of the turntable facing the spray arm.

12. The spray arm assembly of any one of claims 1 to 11, wherein the trigger portion is a raised structure disposed at an end of the turntable facing the spray arm.

13. Dishwasher, characterized by comprising a spray arm assembly according to any one of claims 1 to 12.