CN219229797U - Spray arm and dish washer - Google Patents

Abstract

The application discloses a spray arm and dish washer. The spray arm comprises a water delivery pipe, a main spray arm and an auxiliary spray arm, wherein the main spray arm is rotatably connected with the water delivery pipe, the main spray arm is provided with a first gear, the auxiliary spray arm is rotatably connected with the water delivery pipe, and the auxiliary spray arm is provided with a second gear meshed with the first gear. According to the technical scheme, the main spray arm and the auxiliary spray arm are respectively arranged on the water delivery pipe, gear transmission is adopted between the main spray arm and the auxiliary spray arm, the auxiliary spray arm is driven to rotate by rotation of the main spray arm, and the dish washing effect can be enhanced by arrangement of the auxiliary spray arm. And because the auxiliary spray arm is rotatably arranged on the water delivery pipe, the weight of the auxiliary spray arm is borne by the water delivery pipe, so that the weight of the auxiliary spray arm cannot be applied to the main spray arm to influence the rotation of the main spray arm, the loss of hydraulic power can be avoided, the pressure of water jet is improved, and the washing effect is ensured.

Description

Spray arm and dish washer

Technical Field

The application relates to the technical field of dish washers, in particular to a spray arm and a dish washer.

Background

In some dish washers, the spray arm includes a main spray arm and an auxiliary spray arm, both of which can spray water flow, to improve washing effect by the arrangement of the auxiliary spray arm.

Disclosure of Invention

The present application aims to solve, at least to some extent, the technical problems in the related art. Therefore, the application provides the spray arm which can effectively improve the washing effect.

To achieve the above object, the present application discloses a spray arm, comprising:

a water pipe;

the main spray arm is rotatably connected with the water delivery pipe and is provided with a first gear; and

the auxiliary spray arm is rotatably connected with the water delivery pipe and is provided with a second gear meshed with the first gear.

In some embodiments of the present application, the main spray arm is rotatable to form a rotation plane, the rotation axis of the auxiliary spray arm is in the same direction as the length direction of the auxiliary spray arm, and the main spray arm is provided with a power nozzle.

In some embodiments of the present application, the secondary spray arm is located on the spray trajectory of the primary spray arm.

In some embodiments of the present application, the main spray arm is located below the water pipe, the water pipe is provided with a first water outlet joint, the first water outlet joint forms a first water outlet, the main spray arm is provided with a first water inlet joint, the first water inlet joint forms a first water inlet, and the first gear surrounds the first water inlet;

the spray arm further comprises a clamping ring piece, wherein the clamping ring piece is fixedly connected with one of the first water outlet connector and the first water inlet connector and is rotatably connected with the other one of the first water outlet connector and the first water inlet connector.

In some embodiments of the present application, the clamping ring is sleeved on the first water outlet connector, and the clamping ring is embedded in the first water inlet.

In some embodiments of the present application, the first water outlet connector extends downward, the clip member is rotatably connected with the first water outlet connector, the first water outlet connector is provided with a radially protruding protrusion, and the protrusion and the clip member abut against to limit the clip member from being separated from the first water outlet connector.

In some embodiments of the present application, the snap ring comprises a first half ring and a second half ring, the first half ring and the second half ring being detachably connected.

In some embodiments of the present application, the water pipe is provided with a second water outlet joint, and the second water outlet joint forms a second water outlet; the second gear is sleeved on the second water outlet joint and can be rotatably arranged, the auxiliary spray arm is provided with a second water inlet joint, and the second water inlet joint is sleeved on the second water outlet joint and is fixedly connected with the second gear.

In some embodiments of the present application, the second water inlet joint further houses at least a portion of the second gear.

In some embodiments of the present application, the inner wall of second water inlet connector is equipped with dodges mouth and draw-in groove, the draw-in groove is followed the circumference setting of the inner wall of second water inlet connector and with dodge mouthful intercommunication, the second gear is equipped with the card and protruding, the second water inlet connector is located the second water outlet connector is in order to make the card protruding pass dodge mouthful, the second water inlet connector rotates in order to make the protruding interference card of card is located the draw-in groove.

In some embodiments of the present application, the spray arm further includes a limiting member, where the limiting member is sleeved on the second water outlet joint and is used for abutting against the second gear, so as to limit the second gear from being separated from the second water outlet joint.

In some embodiments of the present application, the second water outlet joint is provided with a convex ring surrounding the circumference thereof, the convex ring is covered by the second gear, and the convex ring is used for supporting the second gear.

In some embodiments of the present application, the spray arm is applied to a dishwasher, and the side of the dishwasher close to the user is taken as a front side, and the second water outlet joint extends towards the front side.

In some embodiments of the present application, the second water outlet joint comprises two;

the two second water outlet connectors are symmetrically distributed by taking the extending direction of the water conveying pipe as a symmetrical axis, and/or the two second water outlet connectors are linearly distributed.

The application also discloses a dishwasher comprising the spray arm of any of the above embodiments.

In some embodiments of the present application, the dishwasher further comprises a bowl basket, the water pipe is connected to the bowl basket, and is located below the bowl basket.

According to the technical scheme, the main spray arm and the auxiliary spray arm are respectively arranged on the water delivery pipe, gear transmission is adopted between the main spray arm and the auxiliary spray arm, the auxiliary spray arm is driven to rotate by rotation of the main spray arm, and the dish washing effect can be enhanced by arrangement of the auxiliary spray arm. And because the auxiliary spray arm is rotatably arranged on the water delivery pipe, the weight of the auxiliary spray arm is borne by the water delivery pipe, so that the weight of the auxiliary spray arm cannot be applied to the main spray arm to influence the rotation of the main spray arm, the loss of hydraulic power can be avoided, the pressure of water jet is improved, and the washing effect is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other designs can be obtained according to the structures shown in these drawings without the need of creative efforts for a person skilled in the art.

FIG. 1 is a schematic illustration of a spray arm in some embodiments;

FIG. 2 is an exploded view of a portion of a spray arm in some embodiments;

FIG. 3 is an enlarged view of the broken line of FIG. 2;

FIG. 4 is an exploded view of a spray arm in some embodiments;

FIG. 5 is an enlarged view of the broken line of FIG. 4;

FIG. 6 is a cross-sectional view of a spray arm in some embodiments;

FIG. 7 is an enlarged view of the broken line of FIG. 6;

FIG. 8 is a schematic diagram of the mating of a second water outlet fitting and a second water inlet fitting in some embodiments;

FIG. 9 is a schematic illustration of a main spray arm in some embodiments;

FIG. 10 is a schematic illustration of a main spray arm in some embodiments;

FIG. 11 is an enlarged view of the broken line of FIG. 10;

FIG. 12 is a schematic view of a clip according to some embodiments;

FIG. 13 is an exploded view of a secondary spray arm and a second gear of some embodiments;

FIG. 14 is a schematic view of the spray arm of FIGS. 1-13 mated with an upper bowl basket;

FIG. 15 is a schematic view of a spray arm in some embodiments;

FIG. 16 is an exploded view of a portion of a spray arm in some embodiments;

fig. 17 is a schematic view of the spray arm of fig. 15-16 mated with an upper bowl basket.

Reference numerals illustrate:

the water pipe 1000, the first water outlet joint 1100, the first water outlet 1110, the convex part 1120, the second water outlet joint 1200, the second water outlet 1210, the convex ring 1220 and the clamping hook 1300;

a main spray arm 2000, a main spray arm upper blade 2100, a power nozzle 2101, a cleaning nozzle 2102, a first water inlet joint 2110, a first water inlet 2111, a buckling position 2112, a first gear 2120, and a spray arm lower blade 2200;

clasp 3000, boss 3001, first half 3100, second half 3200;

the auxiliary spray arm 4000, the spray nozzle 4001, the second water inlet joint 4100, the clamping groove 4110 and the avoiding port 4120;

a second gear 5000, a catch 5100;

a limiting member 6000;

a shim 7000;

bowl basket 8000.

The realization, functional characteristics and advantages of the present application will be further described with reference to the embodiments, referring to the attached drawings.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is correspondingly changed.

In the present application, unless explicitly specified and limited otherwise, the terms "coupled," "secured," and the like are to be construed broadly, and for example, "secured" may be either permanently attached or removably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In addition, descriptions such as those related to "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated in this application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

The spray arm is a structure for spraying water, and the dishwasher is taken as an example for describing the spray arm in the application, and it is understood that the spray arm can be applied to other devices besides the dishwasher.

The dish washer is a device capable of automatically cleaning tableware, generally comprises a base, an inner container and a door body, wherein the inner container is arranged on the base, the inner container is provided with a washing cavity, the door body is rotatably connected with the inner container and/or the base to seal or open the washing cavity, a bowl basket capable of being pulled out or pushed in is arranged in the washing cavity, when the door body opens the washing cavity, the bowl basket can be pulled out of the washing cavity, at the moment, a user can load tableware on the bowl basket, after the loading is finished, the bowl basket is pushed into the washing cavity, then the door body is rotated to seal the washing cavity, and washing work can be performed in the washing cavity.

The washing chamber is internally provided with a spray arm, a plurality of larger dish washing machines are provided with an upper spray arm and a lower spray arm, the spray arms are communicated with a washing pump in a base through a waterway, the washing pump is also communicated with the washing chamber, when the washing pump works, water in the washing chamber is pumped and conveyed to the spray arms, the spray arms are provided with nozzles, water flow is ejected from the nozzles of the spray arms under the action of pressure, and the spray arms are driven to rotate under the action of reverse driving force of the water flow ejected from the nozzles of the spray arms, so that the water flow is ejected onto tableware to clean the tableware. The water flow sprayed by the spray arm falls back to the washing cavity, the water flow is filtered by the filter screen and continuously circulates under the action of the washing pump until the washing is finished, and the water is discharged by the drainage pump.

Generally, the spray arm rotates in a circular motion, i.e. the spray arm rotates to form a rotation plane, and the water flow sprayed by the spray arm in a circular motion is limited in coverage, so that the washing time is prolonged, but the use experience of a user is reduced, or more and denser spray nozzles are arranged on the spray arm, so that the track concentration of the sprayed water flow is increased, but the water pressure is reduced, and the pressure of the sprayed water flow is reduced, so that tableware cannot be effectively washed. In this regard, the present application proposes an improvement, a spray arm.

Referring specifically to fig. 1, in some embodiments, the spray arm includes a water delivery tube 1000, a primary spray arm 2000, and a secondary spray arm 4000.

Taking a dish washer as an example, when the dish washer starts to work, a water inlet valve of the dish washer is opened, water is introduced into a washing cavity, and when the water level of the inner container reaches a preset water level, the water inlet valve of the dish washer is closed, so that continuous water input is cut off. Thereafter, the washing pump of the dishwasher pumps water in the washing chamber and transfers it through the waterway. The water pipe 1000 is communicated with a corresponding water channel, and extends into the washing cavity, water pumped by the washing pump is conveyed into the water pipe 1000 through the water channel, and then is conveyed to the main spray arm 2000 and the auxiliary spray arm 4000 which are connected to the water pipe 1000 through the water pipe 1000.

The main spray arm 2000 is rotatably connected to the water pipe 1000, i.e., the main spray arm 2000 is movable relative to the water pipe 1000 and is capable of receiving the water flow from the output of the water pipe 1000, and the weight of the main spray arm 2000 is applied to the water pipe 1000. In general, the main spray arm 2000 needs to be provided with a nozzle to spray water to clean tableware, and when the nozzle is set to a certain angle, the sprayed water can not only clean tableware, but also provide power for the rotation of the main spray arm 2000, so as to promote the main spray arm 2000 to rotate relative to the water pipe 1000. It is understood that the connection between the main spray arm 2000 and the water pipe 1000 may be various, and reference may be made to the rotating structure of the spray arm of the dishwasher in the related art, as long as it is ensured that the main spray arm 2000 can receive the water flow outputted from the water pipe 1000 and present a rotating state when the water flow is sprayed.

The auxiliary spray arm 4000 is rotatably connected with the water pipe 1000, similar to the main spray arm 2000 and the water pipe 1000, i.e. the auxiliary spray arm 4000 is movable relative to the water pipe 1000 and can receive the water flow output from the water pipe 1000, and the water flow received by the main spray arm 2000 is not mutually influenced. The secondary spray arm 4000 is provided with a second gear 5000, the primary spray arm 2000 is provided with a first gear 2120, the first gear 2120 is driven to rotate in the process of rotating the primary spray arm 2000, the first gear 2120 is meshed with the second gear 5000, so that the rotation of the first gear 2120 can drive the rotation of the second gear 5000, and the second gear 5000 is arranged on the secondary spray arm 4000, namely, fixed with the secondary spray arm 4000, so that the rotation of the second gear 5000 can drive the synchronous rotation of the secondary spray arm 4000. The auxiliary spray arm 4000 is provided with the corresponding spray nozzle 4001, and when the auxiliary spray arm 4000 rotates, the water flow sprayed by the auxiliary spray arm 4000 synchronously rotates, and as the water flow track sprayed by the auxiliary spray arm 4000 is different from the water flow track sprayed by the main spray arm 2000, the cleaning effect of tableware can be effectively enhanced by superposing the two water flow tracks.

In general, the nozzle 4001 on the secondary boom 4000 does not need to provide the power required for the rotation of the secondary boom 4000, which is accomplished by the rotation of the primary boom 2000. For example, the nozzles 4001 on the secondary spray arm 4000 are all used to wash dishes, i.e., are not inclined, and the water flow emitted from these nozzles 4001 may be perpendicular to the outer surface of the secondary spray arm 4000. It is also possible that the nozzle 4001 provided on the sub-spray arm 4000 provides a certain driving force, but this driving force is smaller than the driving force required for the rotation of the main spray arm 2000, so that the water flow sprayed from the sub-spray arm 4000 can realize the washing of the dishes and also can realize the rotation of itself to assist.

It can be seen that the main spray arm 2000 and the sub spray arm 4000 are relatively, and the main spray arm 2000, which provides a reverse driving force for water jet, is driven by the gear engagement, and the sub spray arm 4000.

It will be appreciated that the primary spray arm 2000 is powered by the cooperation of the first gear 2120 and the second gear 5000, thereby causing the secondary spray arm 4000 to rotate. The first gear 2120 and the second gear 5000 are engaged with each other by the gear tooth structure, and therefore, the first gear 2120 and the second gear 5000 are not necessarily flat circular structures as in the gears of the related art, as long as the engagement of the gear teeth on the first gear 2120 and the second gear 5000 can be achieved, for example, a cylindrical structure.

The first gear 2120 is provided on the main boom 2000 and rotates in response to the rotation of the main boom 2000, and the first gear 2120 may be a separate member and may be fixed to the main boom 2000 by welding, fusing, bonding, clipping, screwing, or the like, or the first gear 2120 and the main boom 2000 may be integrally formed.

As for the second gear 5000, the second gear 5000 is provided on the sub-boom 4000 to rotate together with the sub-boom 4000, and therefore the second gear 5000 may be a separate member, and may be fixed to the sub-boom 4000 by welding, bonding, fastening, screwing, plugging, or the like, or the second gear 5000 and the sub-boom 4000 may be integrally formed.

From the above, according to the technical scheme, the main spray arm 2000 and the auxiliary spray arm 4000 are respectively arranged on the water pipe 1000, the main spray arm 2000 and the auxiliary spray arm 4000 are in gear transmission, the main spray arm 2000 rotates to drive the auxiliary spray arm 4000 to rotate, and the tableware washing effect can be enhanced through the arrangement of the auxiliary spray arm 4000. In addition, since the auxiliary spray arm 4000 is rotatably arranged on the water pipe 1000, the weight of the auxiliary spray arm 4000 is borne by the water pipe 1000, so that the weight of the auxiliary spray arm 4000 cannot be applied to the main spray arm 2000 to influence the rotation of the main spray arm 2000, the loss of hydraulic power can be avoided, the pressure of water jet is improved, and the washing effect is ensured.

As shown in fig. 1, 2, 4 and 14, in some embodiments, the main spray arm 2000 forms a rotation plane when rotating, but the sub-spray arm 4000 does not form a rotation plane when rotating, but rotates along the length direction of the sub-spray arm 4000 as a rotation axis, that is, the rotation amplitude of the sub-spray arm 4000 is less than that of the main spray arm 2000, so that an enhanced cleaning effect can be formed for a specific area.

Specifically, when the spray arm is mounted to the washing chamber, the main spray arm 2000 is in a substantially horizontal state, and a rotation plane formed when it rotates is also in a substantially horizontal state, and the main spray arm 2000 sprays water flow to the upper and/or lower sides of the washing chamber so that tableware located above and/or below the main spray arm 2000 can be washed. Just as the main spray arm 2000 rotates to form a rotation plane, the main spray arm 2000 rotates to cover most of the area of the washing chamber, so that the sprayed water flow covers most of the tableware as much as possible.

Considering that some tableware may be heavy in stains, even if the water flow emitted by the main spray arm 2000 can be covered, the tableware is difficult to wash cleanly, so that the problem is solved by arranging the auxiliary spray arm 4000. The auxiliary spray arm 4000 does not rotate like the main spray arm 2000, but rotates around the rotation axis along the length direction of the auxiliary spray arm 4000, so that the rotation of the auxiliary spray arm 4000 does not form a large-scale coverage relative to the main spray arm 2000, water flow sprayed by the auxiliary spray arm 4000 is more concentrated, tableware with heavy stains or difficult to clean is placed on the water flow spraying track of the auxiliary spray arm 4000 or is placed close to the auxiliary spray arm 4000, and the auxiliary spray arm 4000 can play a role in enhancing cleaning effect on the tableware.

In addition, the main spray arm 2000 is set to a large range of drive, and the sub-spray arm 4000 is set to a small range of rotation, both of which are more easily mounted to the water pipe 1000 without interfering with each other.

In some embodiments, as shown in fig. 1, the auxiliary spray arm 4000 is located on the spraying track of the main spray arm 2000, so that the water flow sprayed from the auxiliary spray arm 4000 to the tableware is not blocked by the main spray arm 2000, and the cleaning effect of the auxiliary spray arm 4000 is prevented from being reduced.

It will be appreciated that when the main spray arm 2000 is used to wash dishes primarily by spraying water upward, the auxiliary spray arm 4000 is located above the main spray arm 2000, and when the main spray arm 2000 is used to wash dishes primarily by spraying water downward, the auxiliary spray arm 4000 is located below the main spray arm 2000, and the auxiliary spray arm 4000 is located above the main spray arm 2000 as described.

In the dishwasher, the basket is fixed in the inner container, hereinafter, the upper basket 8000 is described as an example, the upper basket 8000 is fixed in the inner container to be located in the washing chamber, and the water pipe 1000 is fixed to the upper basket 8000. The water pipe 1000 is provided with a clamping hook 1300, and the water pipe 1000 is fixed on a steel wire of the upper bowl basket 8000 through the clamping hook 1300 and is positioned below the upper bowl basket 8000 to be in a hanging shape. The inner container is provided with an inner water pipe, and when the water pipe 1000 is suspended and fixed on the upper bowl basket 8000 and the upper bowl basket 8000 is pushed back to the washing cavity, the tail end of the water pipe 1000 is inserted into the inner water pipe to receive water flow output by the inner water pipe. The upper bowl basket 8000 is provided with tableware, and the position opposite to the auxiliary spray arm 4000 can be provided with tableware with heavy stains, so that almost all tableware of the upper bowl basket 8000 can be covered when the main spray arm 2000 sprays water upwards, and although part of water flow of the main spray arm 2000 is shielded due to the existence of the auxiliary spray arm 4000, the auxiliary spray arm 4000 compensates for the water flow sprayed by the auxiliary spray arm 4000, and the auxiliary spray arm 4000 does not rotate greatly, so that the sprayed water flow is more concentrated and more effective to carry out enhanced cleaning on the corresponding tableware.

If the sub-boom 4000 is disposed below the main boom 2000, the sub-boom 4000 will not block the water flow sprayed from the main boom 2000, but the water flow sprayed from the sub-boom 4000 will be blocked by the main boom 2000, and the enhanced cleaning effect of the sub-boom 4000 for a specific area will be stronger than that of the main boom 2000, so the enhanced cleaning effect of the sub-boom 4000 may be reduced.

Referring to fig. 2, 3, 7, and 9 to 12, in some embodiments, the main spray arm 2000 is rotatably connected to the water pipe 1000 through a clip 3000, which is specifically as follows:

for example, the main spray arm 2000 is mainly composed of a main spray arm upper sheet 2100 and a main spray arm lower sheet 2200, the edges of the main spray arm upper sheet 2100 and the main spray arm lower sheet 2200 are opposite to each other, and are connected by welding or fusing, so that a main spray arm chamber is formed between the main spray arm upper sheet 2100 and the main spray arm lower sheet 2200, the main spray arm upper sheet 2100 is provided with a power nozzle 2101 and a cleaning nozzle 2102, the power nozzle 2101 and the cleaning nozzle 2102 are respectively communicated with the main spray arm chamber, the power nozzle 2101 is mainly used for driving the main spray arm 2000, and the cleaning nozzle 2102 is mainly used for cleaning tableware.

The main boom upper sheet 2100 is provided with a first water inlet joint 2110, the first water inlet joint 2110 forming a first water inlet 2111, and the water flow output from the water pipe 1000 enters the main boom chamber through the first water inlet 2111, and is then ejected from the power nozzle 2101 and the cleaning nozzle 2102. The water pipe 1000 may be integrally formed or welded by two pieces, the water pipe 1000 is provided with a first water outlet joint 1100, the first water outlet joint 1100 encloses to form a first water outlet 1110, it is understood that the first water outlet joint 1100 and the first water inlet joint 2110 are mutually matched with the snap ring 3000, so that the first water outlet 1110 and the first water inlet 2111 are communicated through the connection of the snap ring 3000.

The clasp 3000 has a ring structure, and is fixedly connected to one of the first water inlet connector 2110 and the first water outlet connector 1100, and rotatably connected to the other. For example, the clasp 3000 is fixedly connected to the first water inlet connector 2110 and rotatably connected to the first water outlet connector 1100, such that when the main spray arm 2000 rotates, the main spray arm 2000 drives the clasp 3000 to rotate together with respect to the first water outlet connector 1100, i.e. rotate with respect to the water pipe 1000. The first gear 2120 is disposed around the first water inlet 2111, and as the main spray arm 2000 rotates to synchronize rotation of the first gear 2120, the first gear 2120 drives the second gear 5000 engaged therewith to rotate, thereby rotating the sub-spray arm 4000.

By the arrangement of the clamping ring 3000, the main spray arm 2000 can be hung on the water pipe 1000 to realize rotation when being positioned below the water pipe 1000, so that the spray arm can be arranged below the upper bowl basket 8000 to clean tableware.

In some embodiments, as shown in fig. 7, the clip 3000 is sleeved on the first water outlet joint 1100 and is embedded into the first water inlet 2111, so that the installation is convenient, and the water loss in the water flow transmission process can be avoided.

Specifically, the inner wall of the clamping ring 3000 is opposite to the outer wall of the first water outlet connector 1100, so that the clamping ring 3000 is sleeved on the first water outlet connector 1100, and the outer wall of the clamping ring 3000 is opposite to the inner wall of the first water inlet connector 2110, so that the clamping ring 3000 is embedded into the first water inlet 2111, that is, the first water inlet connector 2110 also realizes the sleeving connection of the first water outlet connector 1100, so that the space between the main spray arm 2000 and the water pipe 1000 can be compressed, and the spray arm is prevented from occupying too much washing cavity space. The clamping ring 3000 and the first water inlet connector 2110 are both sleeved on the outer wall of the first water outlet connector 1100, so that when water flows out through the first water outlet connector 1100, a barrier is not formed in the first water outlet connector 1100 to reduce the pressure of the water.

Alternatively, the fixing connection between the clamping ring 3000 and the first water inlet connector 2110 may be various, for example, the clamping ring 3000 may be driven to rotate synchronously while the main spray arm 2000 rotates. For example, a snap-fit connection is illustrated. The inner wall of first water inlet connector 2110 sets up spaced knot position 2112 along circumference, and the outer wall of snap ring 3000 is equipped with bellying 3001, can go into corresponding knot position 2112 with bellying 3001 interference card when snap ring 3000 imbeds in first water inlet 2111 and rotates certain angle, so realizes the fixed connection of snap ring 3000 and main spray arm 2000. It will be appreciated that in order to prevent the main spray arm 2000 from separating from the snap ring 3000 when the main spray arm 2000 is rotated by spraying water, the screwing direction of the main spray arm 2000 and the snap ring 3000 may be the same as the direction in which the main spray arm 2000 is rotated by spraying water.

Optionally, the first water outlet connector 1100 is in a state of extending downward, so that the installation of the snap ring 3000 and the main spray arm 2000 is more convenient, the bottom end of the first water outlet connector 1100 is provided with a protrusion 1120 protruding radially along the first water outlet connector 1100, the protrusion 1120 is annular along the circumferential direction of the first water outlet connector 1100, when the snap ring 3000 is sleeved on the outer wall of the first water outlet connector 1100, the snap ring 3000 moves downward under the action of the main spray arm 2000 and is blocked by the protrusion 1120, the protrusion 1120 and the snap ring 3000 abut against each other, so that the snap ring 3000 is prevented from being separated from the first water outlet connector 1100, that is, the snap ring 3000 and the main spray arm 2000 cannot be separated from each other relative to the first water outlet connector 1100, and because the snap ring 3000 is sleeved on the first water outlet connector 1100 and can be rotatably arranged, so that the snap ring 3000 and the main spray arm 2000 can be rotated under the action of water flow spraying under the blocking of the protrusion 1120.

Alternatively, in order to facilitate the installation of the clasp 3000 to the first water outlet connector 1100, as shown in fig. 12, the clasp 3000 is mainly formed by connecting two halves, namely, a first half ring 3100 and a second half ring 3200, and both the second half ring 3200 and the second half ring 3200 are fixed to the outer wall of the first water outlet connector 1100 by a detachable connection manner, so as to form a sleeve for the first water outlet connector 1100. The first half ring 3100 and the second half ring 3200 may be two separate and mutually separated components, and may be connected flexibly by means of an additional connection mode, or one side of the first half ring 3100 and one side of the second half ring 3200 may be connected flexibly, while the other side of the first half ring 3100 and the other side of the second half ring 3200 may be connected detachably, so that the installation of the clasp 3000 is more convenient.

Referring to fig. 2 to 8 and fig. 13, in some embodiments, a water pipe 1000 is provided with a second water outlet connector 1200, the second water outlet connector 1200 has a certain length, the whole is a hollow tubular connector, the second water outlet connector 1200 is surrounded with a second water outlet 1210, water flow conveyed by the water pipe 1000 flows out to the main spray arm 2000 through the first water outlet connector 1100, and also flows out through the second water outlet connector 1200, a secondary spray arm 4000 is rotatably arranged on the second water outlet connector 1200 so as to receive the flowing water flow, a corresponding nozzle 4001 is arranged on the secondary spray arm 4000, and the water flow can be emitted from the nozzle 4001 to realize the enhanced cleaning effect on a local area.

The second gear 5000 is sleeved on the outer wall of the second water outlet connector 1200 and can be rotatably arranged, namely, gear teeth of the second gear 5000 are arranged along the circumferential direction of the outer wall of the second water outlet connector 1200, the second gear 5000 is provided with a circular through hole, and the second water outlet connector 1200 is provided with a circular periphery, so that the second gear 5000 can be sleeved.

The auxiliary spray arm 4000 may be an integrally formed cone or truncated cone structure, or may be formed by welding two pieces of sheet structures, and one end of the auxiliary spray arm 4000 forms the second water inlet joint 4100, and the second water inlet joint 4100 is sleeved on the second water outlet joint 1200 to receive water flow output by the second water outlet 1210. Since the second water inlet joint 4100 and the second water outlet joint 1200 are in a sleeved relationship, the extending direction of the whole auxiliary spray arm 4000 is the same as that of the second water outlet joint 1200, and the auxiliary spray arm 4000 can only rotate along the extending direction as the rotation axis, so that the rotation range is greatly reduced relative to the main spray arm 2000, and the weight of the auxiliary spray arm 4000 can be better borne.

The secondary spray arm 4000 is fixedly connected to the second gear 5000 when being sleeved on the second water outlet connector 1200, so that when the first gear 2120 drives the second gear 5000 to rotate, the second gear 5000 synchronously drives the secondary spray arm 4000 to rotate. The second gear 5000 and the sub-spray arm 4000 are two separate components, which are manufactured separately, so that the second gear 5000 is rotatably disposed at the second water outlet joint 1200, and the sub-spray arm 4000 is rotatable with respect to the second water outlet joint 1200.

Optionally, when the second water inlet joint 4100 is mounted to the second water outlet joint 1200, for convenience and mutual fixation between the second gear 5000, at least part of the second gear 5000 is further sleeved on the second water inlet structure, so that the second gear 5000 and the second water inlet joint 4100 are in a mutually overlapped state along the radial extending direction of the second water inlet joint 4100.

The connection between the second water inlet joint 4100 and the second gear 5000 may be fastened to each other by means of a snap connection or a screw connection. For example, as shown in fig. 8 and 13, a clamping groove 4110 is formed in an inner wall of the second water inlet joint 4100, a clamping protrusion 5100 is formed at a corresponding portion of the second gear 5000, and the clamping protrusion 5100 is in interference fit with the clamping groove 4110, so that mutual fixation between the second water inlet joint 4100 and the second gear 5000 can be achieved. Specifically, the clamping groove 4110 is circumferentially disposed on an inner wall of the second water inlet joint 4100, and along an axial direction of the second water inlet joint 4100, an avoidance port 4120 communicated with the clamping groove 4110 is disposed on an inner wall of the second water inlet joint 4100, so when the auxiliary spray arm 4000 is installed, the second water inlet joint 4100 is sleeved on the second water outlet joint 1200 and the second gear 5000, the convex clamping 5100 on the second gear 5000 passes through the avoidance port 4120, and when the auxiliary spray arm 4000 rotates for a certain angle, the clamping groove 4110 and the convex clamping 5100 of the second water inlet joint 4100 are mutually in interference clamping, so that the interconnection between the second gear 5000 and the auxiliary spray arm 4000 is realized. It will be appreciated that, to prevent the sub-boom 4000 from coming loose from the second gear 5000 during rotation, the screwing direction between the sub-boom 4000 and the second gear 5000 may be the same as the rotation direction of the sub-boom 4000.

In some embodiments, as shown in fig. 8, the second gear 5000 is rotatably sleeved on the second water outlet connector 1200, and in order to prevent the second gear 5000 from loosening relative to the second water outlet connector 1200 in a more convenient manner, a limiting member 6000 is disposed on the second water outlet connector 1200. For example, the limiting member 6000 is sleeved on the second water outlet connector 1200 and is in interference fit with the second water outlet connector 1200, and the limiting member 6000 is arranged to abut against the second gear 5000, so that the second gear 5000 is blocked by the limiting member 6000 when the second gear 5000 is about to be separated from the second water outlet connector 1200.

Optionally, as shown in fig. 8, in some embodiments, a shim 7000 may be provided between the limiter 6000 and the second gear 5000 to improve wear resistance and reduce rotational friction of the second gear 5000.

Optionally, as shown in fig. 8, in some embodiments, the outer wall of the second water outlet connector 1200 is further provided with a convex ring 1220 surrounding the circumference of the second water outlet connector 1200, where the convex ring 1220 may provide positioning for the installation of the second gear 5000, and when the second gear 5000 is sleeved on the second water outlet connector 1200, the convex ring 1220 is encountered during the insertion process, to indicate that the second gear 5000 is installed in place. In addition, when a certain space is formed between the second gear 5000 and the second water outlet connector 1200 due to some additional structural arrangements, for example, due to the arrangement of the limiting member 6000, the convex ring 1220 is wrapped when the second gear 5000 is in place, and the convex ring 1220 can play a supporting role for the rotation of the second gear 5000, so that the second gear 5000 is prevented from jumping during the rotation.

As shown in connection with fig. 14, in some embodiments, the second water outlet fitting 1200 is directed toward the front side. Specifically, when the dish washer is pulled out from the upper bowl basket 8000, the water pipe 1000 is fixed on the upper bowl basket 8000 and located below the upper bowl basket 8000, and the whole spray arm is pulled out along with the pulling out of the upper bowl basket 8000, and the second water outlet connector 1200 faces the front side, i.e. the side closer to the user, so that the user can conveniently place heavy-stain tableware on the auxiliary spray arm 4000, and the use experience of the user is improved.

As shown in connection with fig. 15-17, in some embodiments, the second water outlet connector 1200 has two, and the two second water outlet connectors 1200 may provide enhanced cleaning of more areas. Alternatively, the two second water outlet connectors 1200 are symmetrically distributed with the water pipe 1000 as a symmetry axis, so that the main spray arm 2000 rotates more smoothly, for example, the two second water outlet connectors 1200 are linearly distributed and are respectively located at the left and right sides, and the linear distribution is approximately a straight line.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the claims, and all equivalent structural changes made in the present application and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present application.

Claims (16)

1. A spray arm, comprising:

a water pipe;

the main spray arm is rotatably connected with the water delivery pipe and is provided with a first gear; and

the auxiliary spray arm is rotatably connected with the water delivery pipe and is provided with a second gear meshed with the first gear.

2. The spray arm of claim 1, wherein the primary spray arm is rotatable to form a plane of rotation, wherein the axis of rotation of the secondary spray arm is co-directional with the length of the secondary spray arm, and wherein the primary spray arm is provided with a power nozzle.

3. The spray arm of claim 2, wherein the secondary spray arm is positioned on a spray trajectory of the primary spray arm.

4. The spray arm of claim 1, wherein the main spray arm is positioned below the water conduit, the water conduit is provided with a first water outlet joint, the first water outlet joint forms a first water outlet, the main spray arm is provided with a first water inlet joint, the first water inlet joint forms a first water inlet, and the first gear surrounds the first water inlet;

the spray arm further comprises a clamping ring piece, wherein the clamping ring piece is fixedly connected with one of the first water outlet connector and the first water inlet connector and is rotatably connected with the other one of the first water outlet connector and the first water inlet connector.

5. The spray arm of claim 4, wherein the snap ring is sleeved on the first water outlet connector, and the snap ring is embedded in the first water inlet.

6. The spray arm of claim 5, wherein the first water outlet connector extends downwardly, the snap ring and the first water outlet connector are rotatably coupled, the first water outlet connector is provided with a radially protruding tab, and the tab and the snap ring abut to limit the snap ring from being disengaged from the first water outlet connector.

7. The spray arm of claim 5, wherein the snap ring comprises a first half ring and a second half ring, the first half ring and the second half ring being removably connected.

8. The spray arm of claim 1, wherein the water conduit is provided with a second water outlet fitting, the second water outlet fitting forming a second water outlet; the second gear is sleeved on the second water outlet joint and can be rotatably arranged, the auxiliary spray arm is provided with a second water inlet joint, and the second water inlet joint is sleeved on the second water outlet joint and is fixedly connected with the second gear.

9. The spray arm of claim 8 wherein said second water inlet joint further houses at least a portion of said second gear.

10. The spray arm of claim 9, wherein the inner wall of the second water inlet connector is provided with an avoidance port and a clamping groove, the clamping groove is arranged along the circumferential direction of the inner wall of the second water inlet connector and is communicated with the avoidance port, the second gear is provided with a clamping protrusion, the second water inlet connector is sleeved on the second water outlet connector so that the clamping protrusion passes through the avoidance port, and the second water inlet connector rotates so that the clamping protrusion is clamped in the clamping groove in an interference manner.

11. The spray arm of claim 8, further comprising a stop member disposed about the second outlet connector for abutting against the second gear to limit the second gear from being disengaged from the second outlet connector.

12. The spray arm of claim 8, wherein the second water outlet fitting is provided with a collar around its circumference, the second gear coating the collar, the collar for supporting the second gear.

13. The spray arm of claim 8, wherein the spray arm is applied to a dishwasher with a side of the dishwasher adjacent a user as a front side, and the second water outlet fitting extends toward the front side.

14. The spray arm of claim 8 wherein said second water outlet connection comprises two;

the two second water outlet connectors are symmetrically distributed by taking the extending direction of the water conveying pipe as a symmetrical axis, and/or the two second water outlet connectors are linearly distributed.

15. A dishwasher, characterized by comprising a spray arm according to any one of claims 1 to 14.

16. The dishwasher of claim 15 further comprising a bowl basket, the water conduit connected to the bowl basket below the bowl basket.

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