CN218128463U - 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, the apparatus further comprises a rotating shaft, the spray arm, drive mechanism and carousel, the pivot is rotated and is installed in spouting the arm seat, the spray arm rotates and connects in the tip of pivot, drive mechanism includes the sun gear, the planet wheel, ring gear and planet carrier, carousel fixed mounting is in the ring gear, carousel and/or spray arm are provided with the trigger part, spray arm subassembly during operation, the spray arm is followed the pivot and is rotated around the relative spray arm seat of first axis, when the spray arm rotates to contact with the carousel, the trigger part can promote the spray arm, make the spray arm rotate around the relative pivot of second axis and produce the injection rivers that sway, because the spray arm follows the pivot and around spouting arm seat pivoted, the ring gear rotation is followed to the carousel of installing on the ring gear, thereby make the spray arm rotate to the position when contacting with the carousel be changeable, make the spray arm can swing more at random with the injection rivers that produce and sway, thereby increase the complexity of injection rivers, be favorable to improving the effect of dish washer and clean.

Description

Spray arm assembly and dish washing machine

Technical Field

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

Background

With the improvement of living standard, dish washing machines capable of freeing hands are gradually becoming 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 dish washer is generally in a spraying mode, under the driving of a washing pump, water flow sprays through a rotating spraying arm to wash the surface of the tableware, and the cleaning effect of the dish washer is closely related to the design of the spraying arm. In the related art, the spray arm has a simple structure, and cannot realize more complicated water jet.

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 can make the spray arm swing more at random to can provide more complicated water jet.

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 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 wheel, a planet wheel, a gear ring and a planet carrier, the sun wheel is fixedly connected with the rotating shaft, the planet carrier is fixed relative to the spray arm base, the gear ring can rotate relative to the planet carrier, and the planet wheel is rotationally connected to the planet carrier and meshed with the sun wheel and the gear ring at the same time;

the rotary disc is fixedly installed on the gear ring, the rotary disc and/or the spray arm are/is provided with a triggering portion, and the triggering portion is used for pushing the spray arm to rotate so as to change the direction of the sprayed water flow.

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

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 spray water flow, and when the spray arm rotates to the upper end of the rotary plate to be in contact with the rotary plate, 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 spray water flow. Because the spray arm follows the pivot when rotating around the spray arm seat, fix the sun gear in the pivot and can follow the pivot and rotate, the sun gear passes through the planet wheel and drives the ring gear rotation, make the carousel of installing on the ring gear follow the ring gear and rotate, thereby the position when making the spray arm rotate the upper end of carousel and carousel contact is changed, consequently, trigger part can promote the spray arm in the position of difference, make the spray arm can swing more at random in order to produce the jet stream who sways, thereby increase the complexity of jet stream, be favorable to improving the clean effect of dish washer.

According to some embodiments of the utility model, the planet wheel is provided with two or more, and is a plurality of the planet wheel is followed the circumference interval distribution of sun gear.

According to the utility model discloses a some embodiments, the planet carrier is provided with the planet axle, the planet wheel rotate through first bearing install in the planet axle.

According to the utility model discloses a some embodiments, the planet carrier orientation the one end of carousel has the accepting part, the middle part of accepting part is formed with and is used for dodging the perforation of sun gear, the planet axle set up in fenestrate periphery.

According to some embodiments of the invention, the planet carrier is kept away from the one end of carousel has a cylinder portion, the ring gear through the second bearing rotate install in the cylinder portion.

According to the utility model discloses a some embodiments, the column portion is kept away from the one end of carousel is provided with the stiff end, the stiff end is provided with and is used for fixing the first card hole of planet carrier.

According to some embodiments of the utility model, the periphery wall of ring gear is provided with the second pothook, the carousel is provided with the cooperation the second card hole of second pothook.

According to the utility model discloses a some embodiments, the periphery wall of ring gear is formed with the breach, the second pothook set up in the breach, the periphery wall of carousel be provided with breach assorted connecting block, second card hole set up in the connecting block.

According to the utility model discloses a some embodiments, the pivot includes rotary drum and connecting seat, the connecting seat connect in the tip of rotary drum, the lateral wall of connecting seat is provided with the installation axle, the spray arm rotate install in the installation axle.

According to the utility model discloses a some embodiments, the spray arm is provided with two, two the spray arm rotate respectively install in the installation axle of connecting seat both sides.

According to some embodiments of the utility model, the carousel is provided with the outlet, the outlet set up in the carousel orientation the one end of spray arm.

According to the utility model discloses a some embodiments, trigger part is protruding structure, protruding structure set up in the carousel orientation the one end of spray arm.

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 owing to adopt foretell spray arm subassembly, and the spray arm subassembly during operation, the spray arm drives the pivot and rotates around the relative spray arm seat of first axis under the reaction force of jet stream, and when the spray arm rotated the upper end of carousel and the contact of carousel, trigger part can promote the spray arm for the spray arm rotates around the relative pivot of second axis and produces the jet stream that sways. Because the spray arm follows the pivot when rotating around the spray arm seat, fix the sun gear in the pivot and can follow the pivot and rotate, the sun gear passes through the planet wheel and drives the ring gear rotation, make the carousel of installing on the ring gear follow the ring gear and rotate, thereby the position when making the spray arm rotate the upper end of carousel and carousel contact is changed, consequently, trigger part can promote the spray arm in the position of difference, make the spray arm can swing more at random in order to produce the jet stream who sways, thereby increase the complexity of jet stream, be favorable to improving the clean effect of dish washer.

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 a schematic view of the exploded structure of FIG. 1;

fig. 4 is a schematic view of the assembly of the transmission, turntable and drum of some embodiments of the present invention;

fig. 5 is a schematic view of the assembly of the transmission and the drum according to some embodiments of the present invention;

fig. 6 is an exploded view of the connecting base and the rotating drum according to some embodiments of the present invention;

fig. 7 is an exploded view of the turntable and gear ring of some embodiments of the present invention;

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

fig. 9 is a first schematic view illustrating the spray arm being rotated by the trigger portion when the spray arm contacts the 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 view illustrating 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 hole 111; a third bearing 112; a turntable 120; a trigger section 121; a drain opening 122; a connecting block 123; a second card hole 124; a planet wheel 130; a first bearing 131; a planet carrier 140; a receiving portion 141; a cylindrical portion 142; a planet shaft 143; a perforation 144; a fixed end 145; a first card hole 146; a sun gear 150; the elastic wall 151; a ring gear 160; a second hook 161; a notch 162; a second bearing 163; a connecting seat 170; mounting shaft 171; a fixed block 172; a drum 180; a catching groove 181; a spray arm base 190; a first hook 191; a stop block 192; an inner container 200; a first axis 300; a second axis 400.

Detailed Description

Reference will now be made in detail to the 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 functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of 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 directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, 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 there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless otherwise clear and definite limitations, words such as setting, installing, connecting, assembling, matching, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention by combining the specific contents of the technical solutions.

The dish washer is one kind of automatic dish washer capable of washing dishes, chopsticks, dish, knife, fork and other tableware. The full-automatic dish washing machine on the market can be divided into two types of families for household and business, the dish washing machine for household 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 gradually becomes the standard of quality life. Compared with the traditional hand washing of bowls and chopsticks, the dish washing machine has the advantages of cleaning, sterilization, water and labor saving and the like. The dish washer is provided with spray arm subassembly usually, and the spray arm subassembly includes spray arm seat and spray arm, has seted up the orifice on the spray arm, and the dish washer during operation, washing rivers are from the blowout formation water jet under the drive of pressure equipment such as washing pump in the orifice, and water jet produces reaction force to the spray arm for the spray arm can be rotatory around the spray arm seat, thereby makes water jet can carry out the washing of circulating and reciprocating to the inside tableware of dish washer. In the related art, the spray water flow generated by the spray arm is simple, and more complicated spray water flow cannot be realized.

In order to solve at least one technical problem, the utility model provides a spray arm subassembly can realize more complicated injection rivers to further improve clean effect.

Referring to fig. 1, a spray arm assembly 100 of a dishwasher according to an embodiment of the present invention generally has an upper spray arm assembly and a lower spray arm assembly, the upper spray arm assembly can wash tableware from above, and the lower spray arm assembly can wash tableware from below, the spray arm assembly 100 of the embodiment of the first aspect of the present invention can be used as the upper spray arm assembly or the lower spray arm assembly, and the following spray arm assembly is specifically described as an example.

Referring to fig. 2 and 3, the spray arm assembly 100 includes a spray arm base 190, a rotating shaft, a spray arm 110, a turntable 120 and a transmission mechanism, wherein the spray arm base 190 is a cylindrical structure and 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 base 190, the lower end of the rotating shaft is inserted into the center hole, the rotating shaft can rotate around a first axis 300 relative to the spray arm base 190, and the first axis 300 can be the axis of the spray arm base itself. The inside of pivot is equipped with along the water delivery passageway of axial arrangement, and water delivery passageway extends to the upper end of pivot. One spray arm 110 may be provided, and of course, more spray arms 110 may be provided, the spray arms 110 are mounted on the 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 the axis of the spray arms 110 themselves. 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 simultaneously, when the spray arm 110 rotates around the second axis 400, the spray arm 110 swings, so that the movement track is more complicated. 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 swinging effect of the spray arm 110 is more significant. The spray arm 110 has a cavity therein, and the cavity is communicated with the water delivery passage of the rotation shaft. The outer wall of the spray arm 110 is formed with a plurality of spray holes 111 communicated with the cavity, and the washing water can enter the cavity through the water delivery channel and then be sprayed out from the spray holes 111 to form a water jet which can clean tableware or other objects to be cleaned. Because the water jet has certain water pressure, the water jet can generate reaction force to the spray arm 110 after being sprayed out from 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 can be understood that, in order to further improve the cleaning effect, the spray holes 111 may be divided into several groups with different directions, so that the coverage of the water jet may be improved, and the cleaning effect may be improved.

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

The turntable 120 is fixedly installed at the upper end of the ring gear 160, the upper end of the turntable 120 is provided with the trigger part 121, and when the spray arm 110 rotates to the upper end of the turntable 120, the trigger part 121 can push the spray arm 110 to swing around the second axis 400, so that the spraying direction of the spray water flow sprayed from the spray holes 111 of the spray arm 110 is changed accordingly. Referring to fig. 9 to 12, specifically, the trigger part 121 may be a protrusion structure or a pin structure disposed on an upper end surface of the turntable 120, 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, the trigger 121 may be disposed at the lower end of the spray arm 110, or the trigger 121 may be disposed at both the upper end of the turntable 120 and the lower end of the spray arm 110, and similarly, when the spray arm 110 rotates to the upper end of the turntable 120, the trigger 121 may push the spray arm 110 to rotate around the second axis 400. It can be understood that the number of the triggering portions 121 may be one or more, for example, five protrusion structures may be provided on the upper end surface of the rotating disc 120 at intervals along the circumferential direction, and each protrusion structure constitutes one triggering portion 121, so that the spray arm 110 can randomly swing at more different positions, the water spray is more complicated, 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 base 190 under the reaction force of the spray water flow, and when the spray arm 110 rotates to the upper end of the rotating disc 120 to be in contact with the rotating disc 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 the 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, the sun gear 150 drives the gear ring 160 to rotate through the planet gear 130, so that the rotary disc 120 installed on the gear ring 160 rotates along with the gear ring 160, and the position of the spray arm 110 when the upper end of the rotary disc 120 contacts with the rotary disc 120 changes, therefore, 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 water jet, thereby increasing the complexity of the water jet, and being beneficial to improving the washing effect of the dishwasher.

Referring to fig. 5, it can be understood that, in some embodiments of the present invention, in order to make the transmission of power more stable, the planetary gear 130 may be provided with two or more, and the plurality of planetary gears 130 are distributed along the circumferential direction of the sun gear 150 at intervals, so that the sun gear 150 can transmit power to the ring gear 160 through the plurality of planetary gears 130, and the process of the rotating shaft transmitting power to the turntable 120 through the transmission mechanism is more stable, which is beneficial to improving the working stability and reliability of the transmission mechanism. Specifically, the plurality of planet wheels 130 may be uniformly spaced apart in the circumferential direction, or may be non-uniformly spaced apart. When evenly spaced distribution along circumference between a plurality of planet wheels 130, the distribution of power between a plurality of planet wheels 130 is also more even, is favorable to further improving the stationarity of drive mechanism work. For example, there are two planet wheels 130, and the included angle between two planet wheels 130 is 180 °, or there are three planet wheels 130, and the included angle between two adjacent planet wheels 130 is 120 °.

Referring to fig. 5 and 8, it can be understood that, in some embodiments of the present invention, in order to allow the planet wheel 130 to be conveniently installed on the planet carrier 140, one end of the planet carrier 140 facing the turntable 120 is provided with planet shafts 143, the number of the planet shafts 143 is the same as that of the planet wheel 130, and the planet wheel 130 is rotatably installed on the outer wall of the planet shaft 143. When the carrier 140 is manufactured, the planet 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 planet shaft 143 may be manufactured separately, and then the planet 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 understood that, in some embodiments of the present invention, the transmission mechanism further includes a first bearing 131, and the planet wheel 130 is rotatably mounted on the planet shaft 143 through the first bearing 131, so that the friction between the planet wheel 130 and the planet shaft 143 can be reduced, which is beneficial to improving the smoothness of the rotation of the planet wheel 130. The first bearing 131 may be a ball bearing, which has relatively small friction resistance and reliable performance, and when installed, the inner ring of the ball bearing may be fixed to the outer wall of the planet shaft 143, and the planet gear 130 may be fixed to the outer ring of the ball bearing, so that the planet gear 130 may be rotatably installed on the planet shaft 143 through the ball bearing.

Referring to fig. 5 and 8, it can be understood that, in some embodiments of the present invention, the planet carrier 140 has a receiving portion 141 at an end facing the rotation disc 120, and the planet shaft 143 is disposed on the receiving portion 141. The receiving portion 141 has a substantially annular shape, a through hole 144 for avoiding the sun gear 150 is formed in the middle thereof, and a plurality of planetary shafts 143 are provided at intervals around the outer periphery of the through hole 144. When the planetary gear set is installed, after the sun gear 150 is fixed on the outer wall of the rotating shaft, the planet carrier 140 is sleeved outside the sun gear 150, and the sun gear 150 is located in the through hole 144 of the bearing portion 141, so that the planet gear 130 installed on the planet shaft 143 at the periphery of the through hole 144 can be in good meshing connection with the sun gear 150.

Referring to fig. 3, 5 and 8, it can be understood that, in some embodiments of the present invention, in order to install the ring gear 160 and enable the ring gear 160 to rotate relative to the planet carrier 140, one end of the planet carrier 140 away from the turntable 120 has a cylindrical portion 142, the cylindrical portion 142 is hollow to avoid the sun gear 150 and the spray arm seat 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 installed on the outer wall of the cylindrical portion 142 through the second bearing 163, so that the ring gear 160 can be rotatably installed on the cylindrical portion 142, and the receiving portion 141 can play a role of positioning the second bearing 163, when the second bearing 163 is sleeved by the lower end of the cylindrical portion 142, and then moves to the receiving portion 141, so that the second bearing 163 abuts against the bottom of the receiving portion 141, so that the second bearing 163 is installed in place. Specifically, the second bearing 163 may be a ball bearing having good rotational performance and small rolling friction. The inner race 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 race of the second bearing 163, so that the ring gear 160 can rotate about the cylindrical portion 142 via the second bearing 163. Specifically, in order to enable the gear ring 160 to be well mounted on the outer ring of the second bearing 163, a bottom of a sidewall of the gear ring 160 may be provided with a rib protruding toward the column portion 142, and the rib abuts against a lower end of the outer ring of the second bearing 163, so that the gear ring 160 may be limited from moving axially along the second bearing 163, unnecessary shaking of the gear ring 160 may be reduced, and improvement of stability of the gear ring 160 during rotation may be facilitated.

Referring to fig. 2 and 8, it can be understood that, in order to fix the planet carrier 140 relative to the spray arm seat 190, in some embodiments of the present invention, one end of the column 142 away from the receiving portion 141 is provided with a fixing end 145, the fixing end 145 is provided with a first fastening hole 146, the inner container 200 of the dishwasher is provided with a first fastening hook 191, and the first fastening hook 191 is located at the periphery of the bottom of the spray arm seat 190. When the device is installed, the first hook 191 is clamped into the first clamping hole 146, so that the planet carrier 140 can be installed and fixed relative to the spray arm seat 190. Of course, the first hooks 191 may also be disposed on the outer wall of the spray arm seat 190, so that the planet carrier 140 may be mounted on the spray arm 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, two fixing ends 145 are symmetrically provided at two sides of the cylindrical portion 142, each fixing end 145 is provided with one first latching hole 146, and correspondingly, two first hooks 191 are also provided, and when the planetary carrier 140 is installed, the two first hooks 191 are respectively latched into the corresponding first latching holes 146, so that the planetary 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 block 192, the blocking block 192 is located outside the first hook 191, and the blocking block 192 abuts against the side wall of the fixed end 145, so that the blocking block 192 can cooperate with the first hook 191 to prevent the fixed end 145 from rotating together, the installation of the planet carrier 140 is more stable, and the reduction of the shaking of the planet carrier 140 is facilitated. Of course, there may be a plurality of the blocking pieces 192, and both ends of the rotation direction of each fixing end 145 are provided with the blocking pieces 192, so that the fixing end 145 is limited by the blocking pieces 192 when rotating 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 hook hole 124, and during the installation, the turntable 120 is pressed into the gear ring 160, so that the second hook 161 is engaged in the second hook hole 124, and thus the turntable 120 is installed on the gear ring 160, which is very convenient to operate. Of course, there may be more second hooks 161 and more second holes 124, so that there are more stressed connection points between the turntable 120 and the gear ring 160, and the connection is more reliable.

Referring to fig. 7, specifically, a notch 162 is formed in the outer peripheral wall of the ring gear 160, the second hook 161 is disposed in the notch 162, the outer peripheral wall of the turntable 120 is provided with a connecting block 123 extending downward, a second hook hole 124 is formed in the middle of the connecting block 123, the connecting block 123 is placed in the notch 162 during installation, so that the second hook 161 is clamped into the second hook hole 124, and the connecting block 123 is substantially filled in the notch 162, thereby making the overall structure of the turntable 120 and the ring gear 160 more compact, reducing the overall size of the turntable and the ring gear 160, and simultaneously avoiding the second hook 161 and the connecting block 123 from protruding out of the outer 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 push the connecting block 123 together through the inner wall of the notch 162 and the second hook 161, 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 easily broken due to overlarge stress, particularly when the gear ring 160 starts to rotate, the acceleration is large, the thrust of the gear ring 160 to the turntable 120 is also large at the moment, 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, thereby reducing the stress condition of the second hook 161, prolonging the service life of the second hook 161, simultaneously, enabling the stress distribution of the connecting block 123 to be more uniform, and being beneficial to prolonging the service life of the connecting block 123.

Referring to fig. 3 and 6, it can be understood that the lower end of the rotating shaft is inserted into the central hole of the spray arm seat 190, while the upper end of the rotating shaft needs to extend out of the central hole of the spray arm seat 190 to be rotatably connected with the spray arm 110, and the transmission mechanism is further sleeved outside the rotating shaft. In order to facilitate the installation and 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 cylinder 180 and a connecting seat 170, the rotating cylinder 180 is inserted into the central hole of the spray arm seat 190, the connecting seat 170 is located outside the central hole of the spray arm seat 190 and is fixedly connected to the rotating cylinder 180, the side of the connecting seat 170 is provided with an installation shaft 171, 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 rotary drum 180 is provided with a catching groove 181, and the fixing block 172 is caught in the catching groove 181, so that the connecting seat 170 can be fixed to the upper end of the rotary drum 180. During installation, the transmission mechanism can be firstly sleeved on the outer wall of the rotating drum 180, then the rotating 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 rotating drum 180. Because the height distance between the connecting seat 170 and the inner container 200 is relatively small, 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 rotary 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 rotating cylinder 180, and the lower end of the sun gear 150 is provided with two elastic arms, the outer wall of the spray arm seat 190 is provided with an annular protrusion, and the elastic arms 151 are connected to the lower end of the annular protrusion in a clamping manner, so that the limiting effect can be achieved, and the rotating cylinder 180 is prevented from being disengaged 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 understood 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, the two spray arms 110 are respectively installed at both sides of the connection seat 170, thereby improving the coverage of the jet flow, which is beneficial to improving the cleaning effect, and the two spray arms 110 can be respectively in contact with the trigger points of the turntable 120, thereby enabling the two spray arms 110 to respectively generate the swing flow, and the swing flows of the two spray arms 110 are not synchronously generated, which can further improve the complexity of the jet flow, which is beneficial to further improving the cleaning effect.

Referring to fig. 2 and 4, it can be understood that, in some embodiments of the present invention, the turntable 120 is further provided with a plurality of water outlets 122, and the plurality of water outlets 122 are circumferentially distributed at one end of the turntable 120 facing the spray arm 110. When the washing water drops on the upper end of the turntable 120, the washing water can be discharged through the water discharge opening 122, thereby preventing the washing water from accumulating on the upper end of the turntable 120. Specifically, the drain opening 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 flow into the drain opening 122 by gravity to be rapidly drained.

The utility model discloses dish washer of second aspect embodiment, include the utility model discloses spray arm subassembly 100 of the first aspect embodiment, spray arm subassembly 100 during operation, spray arm 110 drive the pivot under the reaction force of jet stream and spout arm seat 190 rotatory relatively around first axis 300, when spray arm 110 rotates the upper end to carousel 120 and carousel 120 contact, trigger part 121 can promote spray arm 110 for spray arm 110 rotates around the relative pivot of second axis 400 and produces the jet stream that sways. 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, the sun gear 150 drives the gear ring 160 to rotate through the planet gear 130, so that the rotary disc 120 installed on the gear ring 160 rotates along with the gear ring 160, and the position of the spray arm 110 when the upper end of the rotary disc 120 rotates to be contacted with the rotary disc 120 is changed, therefore, 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 water jet, thereby increasing the complexity of the water jet, and being beneficial to improving the washing effect of the dish washing machine.

The embodiments of the present invention have been described in detail with reference to the 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 (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 spraying 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 planetary gear, a gear ring and a planetary carrier, the sun gear is fixedly connected with the rotating shaft, the planetary carrier is fixed relative to the spray arm base, the gear ring can rotate relative to the planetary carrier, and the planetary gear is rotationally connected to the planetary carrier and meshed with the sun gear and the gear ring at the same time;

the rotary disc is fixedly installed on the gear ring, the rotary disc and/or the spray arm are/is provided with a triggering portion, and the triggering portion is used for pushing the spray arm to rotate so as to change the direction of the sprayed water flow.

2. The spray arm assembly of claim 1, wherein the planet gear is provided with two or more, and the planet gears are distributed at intervals along the circumferential direction of the sun gear.

3. Spray arm assembly according to claim 1 or 2, wherein the planet carrier is provided with a planet shaft, the planet wheel being rotationally connected to the planet shaft by means of a first bearing.

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

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

6. The spray arm assembly of claim 5, wherein the end of the cylindrical portion away from the turntable is provided with a fixed end, and the fixed end is 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 ring gear is provided with a second hook, and the turntable is provided with a second hook hole for engaging the second hook.

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

9. The spray arm assembly of any one of claims 1 to 8, wherein: the pivot includes rotary drum and connecting seat, the connecting seat connect in the tip of rotary drum, the lateral wall of connecting seat is provided with the installation axle, the spray arm rotate install in the installation axle.

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

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

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

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

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