Spray arm for a dishwasher and dishwasher

Abstract

The utility model relates to a kind of spray arm and cleaning machine for cleaning machine, including water outlet and spraying part, the water outlet is provided with water outlet, the spraying part is rotatably connected at this water outlet, further include detachable wash type butt joint to form annular structure's collar, the side wall of the spraying part is provided with water inlet and the water inlet sleeve extending downward along water inlet, the collar is partially sleeved in the outer periphery of the water inlet sleeve, the water inlet sleeve lower end is provided with the flange that can be cooperated with the lower edge of collar limit, the collar portion and water inlet sleeve are contained in water outlet, and detachable limit structure is arranged between the outer periphery of the collar and the inner periphery of water outlet. Water inlet sleeve of spraying part is constrained in water outlet using detachable butt joint collar, two halves of collar are buckled from water inlet sleeve two sides respectively, facilitate assembly;Collar replaces water outlet itself and spraying part rotation cooperation, avoid the abrasion of water outlet.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, specifically to a spray arm and a washing machine for cleaning tableware, fruits and vegetables. Background Technology

[0002] Dishwashers are typically equipped with spray arms that rinse dishes or fruits and vegetables by spraying water jets.

[0003] For example, the applicant's prior patent ZL 202320984624.6, "Spray Arm for Cleaning Machine and Cleaning Machine", discloses a structure in which, in order to improve the spray coverage, an auxiliary spray arm (nozzle) is provided on the spray arm that can rotate with it and rotate on its own. The nozzle is provided with a water inlet and a water inlet sleeve extending outward along the edge of the water inlet. The water inlet sleeve is rotatably constrained in the water outlet. At least the upper part of the inner wall of the water outlet is inclined radially outward from bottom to top to form a guide slope. The lower edge of the water inlet sleeve is arranged corresponding to the guide slope and a discharge gap is formed between the two.

[0004] The pressure exerted by the water flow on the nozzle causes it to float outward relative to the spray arm. The lower edge of the nozzle inlet sleeve is arranged to correspond to the guide slope above the outlet, forming a discharge gap. This discharge gap allows for the removal of residue from the assembly gaps through a certain amount of water discharge, preventing slag buildup. However, because the nozzle and spray arm are connected by a snap-fit ​​mechanism, the nozzle is difficult to disassemble, and the disassembly and assembly process can cause wear on the limiting structure, affecting the reliability of the connection. Utility Model Content

[0005] The first technical problem to be solved by this utility model is to provide a spray arm for a cleaning machine that is easy to assemble and disassemble and has good connection reliability, in light of the current state of the technology.

[0006] The second technical problem to be solved by this utility model is to provide a cleaning machine with the above-mentioned spray arm, in view of the current situation of the prior art.

[0007] The technical solution adopted by this utility model to solve at least one of the above-mentioned technical problems is as follows:

[0008] A spray arm for a cleaning machine includes a water outlet and a spray component. The water outlet has a water outlet, and the spray component is rotatably connected to the water outlet. It also includes a retaining ring that can be detachably connected to form a ring structure. The side wall of the spray component has a water inlet and a water inlet sleeve extending downward along the water inlet. The retaining ring is partially fitted around the outer periphery of the water inlet sleeve. The lower end of the water inlet sleeve is provided with a support edge that can cooperate with and limit the lower edge of the retaining ring. The retaining ring and the water inlet sleeve are housed in the water outlet, and a detachable limiting structure is provided between the outer periphery of the retaining ring and the inner periphery of the water outlet.

[0009] With the above structure, the water inlet sleeve of the spray component is constrained in the water outlet by a detachable snap ring. The two halves of the snap ring are fastened from both sides of the water inlet sleeve, which facilitates assembly. The snap ring replaces the water outlet component itself and rotates with the spray component, avoiding wear at the water outlet.

[0010] Preferably, the retaining ring rotatably engages with the inlet sleeve. This structure avoids wear at the outlet and improves the reliability of the connection.

[0011] Preferably, the inner circumferential surface of the retaining ring is provided with a plurality of axially extending ribs, the inner edge of which rotates with the outer circumferential surface of the water inlet sleeve. The ribs can reduce the rotational contact area between the inner surface of the retaining ring and the outer surface of the water inlet sleeve, thereby reducing wear and improving rotational smoothness.

[0012] Preferably, a drainage channel is formed between adjacent ribs to allow mud and sand to be discharged. This structure can promptly remove mud and sand from the rotating joint, preventing jamming and ensuring the rotational stability of the spray component.

[0013] In a further preferred embodiment, the upper end face of the rib connects with the upper end face of the retaining ring, and the lower end of the rib is positioned higher than the lower end face of the retaining ring. This structure provides a water flow buffer area at the lower end of the rib, which facilitates smoother drainage of sediment and prevents sediment from accumulating at the lower end of the rib.

[0014] Preferably, the upper surface of the retaining ring is provided with a boss located near its central opening to reduce contact friction between the upper surface of the retaining ring and the lower surface of the spray component. This structure can reduce contact friction between the upper surface of the retaining ring and the lower surface of the spray component, improving the smoothness of the spray component's rotation.

[0015] Preferably, the top of the retaining ring is provided with a pressure plate that abuts against the upper edge of the water outlet, and the pressure plate has operating parts on both sides for easy gripping; the outer peripheral wall of the retaining ring is provided with a retaining rib, and correspondingly, the inner peripheral wall of the water outlet is provided with a retaining groove for the retaining rib to rotate and engage. With the above structure, when installing the spray unit, hold the operating part of the retaining ring, align the retaining rib with the insertion port on the upper side of the retaining groove, place the retaining ring downwards, and after the retaining rib passes through the insertion port above the retaining groove, rotate the retaining ring until the retaining rib engages in the retaining groove, thus achieving a limiting connection between the retaining ring and the inner wall of the water outlet; when it is necessary to disassemble the spray unit, simply reverse the operation of the retaining ring. The above-mentioned retaining rib and retaining groove engagement structure can have multiple sets, and adjacent sets have different lengths in the circumferential direction, making it easy for the user to compare and confirm the engagement position.

[0016] Preferably, the retaining ring includes a first part and a second part that can mate with each other. Both the first and second parts include semi-circular ring bodies that can mate with each other. The first end face of the first part is provided with a first protrusion, and correspondingly, the first end face of the second part is provided with a first slot for inserting the first protrusion. The second end face of the second part is provided with a second protrusion, and correspondingly, the second end face of the first part is provided with a second slot for inserting the second protrusion. With this structure, the first and second parts of the retaining ring are essentially centrally symmetrical, and the mold structures used in production are basically the same, reducing molding costs.

[0017] Preferably, the outer side of the first end of the first part is provided with a first locking foot extending toward the second part, and correspondingly, the outer side of the first end of the second part is provided with a second locking foot extending toward the first part, the first locking foot and the second locking foot engaging and limiting the movement. Preferably, the outer side of the second end of the first part is provided with a third locking foot extending toward the second part, and correspondingly, the outer side of the second end of the second part is provided with a fourth locking foot extending toward the first part, the third locking foot and the fourth locking foot engaging and limiting the movement. With the above structure, the locking feet have a certain degree of elasticity, facilitating the assembly and disassembly of the first part and the second part.

[0018] A cleaning machine includes a housing and the aforementioned spray arm, which is rotatably disposed within the housing.

[0019] Compared with the prior art, the advantages of this utility model are as follows: In this utility model, at the connection between the spray component and the water outlet component, based on the existing partial interlocking water guiding structure, a detachable snap ring is used to constrain the water inlet sleeve of the spray component in the water outlet. The two halves of the snap ring are fastened from both sides of the water inlet sleeve, which facilitates assembly. The snap ring replaces the water outlet component itself and rotates with the spray component, avoiding wear at the water outlet and improving the reliability of the connection. Attached Figure Description

[0020] Figure 1 This is a partial schematic diagram of an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 Partial exploded view;

[0022] Figure 3 for Figure 1 A sectional view;

[0023] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0024] Figure 5 This is a schematic diagram of the structure of the spray component in an embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram of the retaining ring structure in an embodiment of this utility model;

[0026] Figure 7 for Figure 6 A schematic diagram of the bottom structure;

[0027] Figure 8 for Figure 6 A sectional view. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0030] In the description of this utility model, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this utility model, unless otherwise explicitly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this invention are for illustrative purposes only and do not represent the only possible implementation.

[0035] like Figures 1-8 As shown, the spray arm for the cleaning machine in this embodiment includes a water outlet 1 and a spray arm 2. The water outlet 1 has a water outlet 11, which extends upward to form a water flow guide section. The spray arm 2 is rotatably connected to the water outlet 11 and also includes a retaining ring 3 that can be detachably connected to form an annular structure. The bottom side wall of the spray arm 2 has a water inlet 21 and a water inlet sleeve 22 extending downward along the water inlet 21. The retaining ring 3 is partially fitted around the outer periphery of the water inlet sleeve 22. The lower end of the water inlet sleeve 22 is provided with a support edge 23 that can cooperate with and limit the lower edge of the retaining ring 3. The retaining ring 3 and the water inlet sleeve 22 are partially housed in the water outlet 11, and a detachable limiting structure is provided between the outer periphery of the retaining ring 3 and the inner periphery of the water outlet 11.

[0036] With the above structure, the water inlet sleeve 22 of the spray component 2 is constrained in the water outlet 11 by a detachable snap ring 3. The two halves of the snap ring 3 are fastened from both sides of the water inlet sleeve 22, which facilitates assembly. The snap ring 3 replaces the water outlet component 1 itself and rotates with the spray component 2, avoiding wear at the water outlet 11.

[0037] In this embodiment, the retaining ring 3 rotatably engages with the inlet sleeve 22. This structure avoids wear at the outlet 11 and improves the reliability of the connection.

[0038] The inner circumferential surface of the aforementioned retaining ring 3 is provided with multiple axially extending ribs 31, the inner edge of which rotates with the outer circumferential surface of the water inlet sleeve 22. The ribs 31 can reduce the rotational contact area between the inner surface of the retaining ring 3 and the outer surface of the water inlet sleeve 22, thereby reducing wear and improving rotational smoothness.

[0039] In this embodiment, a drainage channel 32 is formed between adjacent ribs 31 to allow mud and sand to be discharged. This structure can promptly remove mud and sand from the rotating joint, preventing jamming and ensuring the rotational stability of the spray component 2.

[0040] The upper end face of the aforementioned rib 31 is connected to the upper end face of the retaining ring 3, and the lower end of the rib 31 is arranged higher than the lower end face of the retaining ring 3. This structure reserves a water flow buffer area 33 at the lower end of the rib 31, which is conducive to smoother discharge of silt and avoids the accumulation of silt at the lower end of the rib 31.

[0041] In this embodiment, the upper surface of the retaining ring 3 is provided with a boss 34 located near its central opening, which is used to reduce the contact friction between the upper surface of the retaining ring 3 and the lower surface of the spray component 2. This structure can reduce the contact friction between the upper surface of the retaining ring 3 and the lower surface of the spray component 2, and improve the smoothness of the rotation of the spray component 2.

[0042] The top of the aforementioned retaining ring 3 is provided with a pressure plate 35 that abuts against the upper edge of the outlet 11. Operating portions 36 are formed on both sides of the pressure plate 35 for easy gripping. A retaining rib 37 is provided on the outer peripheral wall of the retaining ring 3. Correspondingly, a retaining groove 111 is provided on the inner peripheral wall of the outlet 11 for the retaining rib 37 to rotate and engage. The retaining rib 37 and the retaining groove 111 together constitute the aforementioned detachable limiting structure. This detachable limiting structure is existing technology and will not be described in detail here. Using the above structure, when installing the spray component 2, hold the operating portion 36 of the retaining ring 3, align the retaining rib 37 with the insertion port on the upper side of the retaining groove 111, lower the retaining ring 3 downwards, and after the retaining rib 37 passes through the insertion port above the retaining groove 111, rotate the retaining ring 3 until the retaining rib 37 engages in the retaining groove 111, thus achieving a limiting connection between the retaining ring 3 and the inner wall of the outlet 11. When it is necessary to disassemble the spray component 2, simply reverse the operation of the retaining ring 3. The aforementioned locking rib 37 and locking groove 111 can have multiple sets of mating structures, and the lengths of adjacent sets are different in the circumferential direction, which makes it easy for users to compare and confirm the locking position.

[0043] In this embodiment, the retaining ring 3 includes a first part 301 and a second part 302 that can mate with each other. Both the first part 301 and the second part 302 include semi-circular ring bodies that can mate with each other. The first end face of the first part 301 is provided with a first protruding clip 01. Correspondingly, the first end face of the second part 302 is provided with a first slot 001 for inserting the first protruding clip 01. The second end face of the second part 302 is provided with a second protruding clip 02. Correspondingly, the second end face of the first part 301 is provided with a second slot 002 for inserting the second protruding clip 02. With the above structure, the first part 301 and the second part 302 of the retaining ring 3 are basically centrally symmetrical, and the mold structure used in production is basically the same, which can reduce the cost of demolding.

[0044] The first part 301 has a first locking foot 011 extending toward the second part 302 on its outer side at its first end. Correspondingly, the second part 302 has a second locking foot 012 extending toward the first part 301 on its outer side at its first end. The first locking foot 011 and the second locking foot 012 engage and limit the movement of the parts. The first part 301 has a third locking foot 013 extending toward the second part 302 on its outer side at its second end. Correspondingly, the second part 302 has a fourth locking foot 014 extending toward the first part 301 on its outer side at its second end. The third locking foot 013 and the fourth locking foot 014 engage and limit the movement of the parts. With this structure, the locking feet have a certain degree of elasticity, facilitating the assembly and disassembly of the first part 301 and the second part 302.

[0045] In this embodiment, at the connection between the spray component 2 and the water outlet component 1, based on the existing partial interlocking water guiding structure, a detachable locking ring 3 is used to constrain the water inlet sleeve 22 of the spray component 2 in the water outlet 11. The two halves of the locking ring 3 are fastened from both sides of the water inlet sleeve 22, which facilitates assembly. The locking ring 3 replaces the water outlet component 1 itself and rotates with the spray component 2, avoiding wear at the water outlet 11 and improving the reliability of the connection.

[0046] In this embodiment, the water outlet component 1 is a main spray arm, and the spray component 2 is an auxiliary spray arm rotatably mounted on the main spray arm. This structure expands the spray coverage, eliminates cleaning dead spots, and improves the cleaning effect. Of course, the water outlet component 1 can also be a water pump or other water supply component, while the spray component 2 forms an independent spray arm structure.

[0047] The cleaning machine of this embodiment includes a housing and the aforementioned spray arm, which is rotatably disposed within the housing.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A spray arm for a cleaning machine, comprising a water outlet (1) and a spraying component (2), wherein the water outlet (1) has a water outlet (11), and the spraying component (2) is rotatably connected to the water outlet (11), characterized in that: It also includes a snap ring (3) that can be disassembled and connected to form a ring structure. The side wall of the spray component (2) is provided with a water inlet (21) and a water inlet sleeve (22) extending downward along the water inlet (21). The snap ring (3) is partially fitted around the outer periphery of the water inlet sleeve (22). The lower end of the water inlet sleeve (22) is provided with a support edge (23) that can cooperate with and limit the lower edge of the snap ring (3). The snap ring (3) and the water inlet sleeve (22) are partially housed in the water outlet (11). A disassembled limiting structure is provided between the outer periphery of the snap ring (3) and the inner periphery of the water outlet (11).

2. The spray arm for a cleaning machine according to claim 1, characterized in that: The retaining ring (3) rotates in conjunction with the water inlet sleeve (22).

3. The spray arm for a cleaning machine according to claim 2, characterized in that: The inner circumferential surface of the retaining ring (3) is provided with a plurality of axially extending ribs (31), the inner edge of which rotates with the outer circumferential surface of the water inlet sleeve (22).

4. The spray arm for a cleaning machine according to claim 3, characterized in that: The adjacent ribs (31) form a drainage channel (32) for the discharge of mud and sand.

5. The spray arm for a cleaning machine according to claim 3, characterized in that: The upper end face of the rib (31) is connected to the upper end face of the retaining ring (3), and the lower end of the rib (31) is arranged higher than the lower end face of the retaining ring (3).

6. The spray arm for a cleaning machine according to claim 3, characterized in that: The upper surface of the retaining ring (3) is provided with a boss (34) arranged near its middle opening and used to reduce the contact friction between the upper surface of the retaining ring (3) and the lower surface of the spraying component (2).

7. The spray arm for a cleaning machine according to claim 2, characterized in that: The top of the retaining ring (3) is provided with a pressure plate (35) that abuts against the upper edge of the outlet (11). The pressure plate (35) has operating parts (36) on both sides that are easy for a person to hold. The outer peripheral wall of the retaining ring (3) is provided with a retaining rib (37). Correspondingly, the inner peripheral wall of the outlet (11) is provided with a retaining groove (111) for the retaining rib (37) to rotate and be engaged therein.

8. The spray arm for a cleaning machine according to any one of claims 1 to 7, characterized in that: The retaining ring (3) includes a first part (301) and a second part (302) that can be engaged with each other. Both the first part (301) and the second part (302) include semi-circular ring bodies that can be engaged with each other. The first end face of the first part (301) is provided with a first protruding card (01). Correspondingly, the first end face of the second part (302) is provided with a first slot (001) for the first protruding card (01) to be inserted therein. The second end face of the second part (302) is provided with a second protruding card (02). Correspondingly, the second end face of the first part (301) is provided with a second slot (002) for the second protruding card (02) to be inserted therein.

9. The spray arm for a cleaning machine according to claim 8, characterized in that: The first part (301) has a first locking foot (011) extending toward the second part (302) on the outer side of the first end. Correspondingly, the second part (302) has a second locking foot (012) extending toward the first part (301) on the outer side of the first end. The first locking foot (011) and the second locking foot (012) cooperate to lock and limit the position. The second end of the first part (301) is provided with a third locking foot (013) extending toward the second part (302) on the outer side. Correspondingly, the second end of the second part (302) is provided with a fourth locking foot (014) extending toward the first part (301) on the outer side. The third locking foot (013) and the fourth locking foot (014) cooperate to lock and limit the position.

10. A cleaning machine, comprising a housing, characterized in that: It also includes a spray arm as described in any one of claims 1 to 9, wherein the spray arm is rotatably disposed in the housing.

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