Spray arm assembly and dishwasher

Abstract

The utility model relates to dish-washing machine technical field discloses spray arm assembly and dish-washing machine, spray arm assembly includes: main spray arm is equipped with assembly port, vice spray arm is detachably installed in assembly port through assembly component, is provided with interface structure on vice spray arm, at least two assembly bodies respectively sleeve in the outer periphery of interface structure and assemble and form annular assembly component, the outer periphery of assembly component is provided with the clamping structure, and the assembly port is provided with the clamping cooperation structure, vice spray arm and assembly component assembly integral, through clamping structure and clamping cooperation structure rotation clamping on main spray arm. In the application, vice spray arm is installed in the assembly port of main spray arm through above-mentioned assembly component, and installation and dismounting are very easy and labor-saving, and dismounting is very fast and efficient, reduces assembly difficulty, and the buckle does not need interference plug to insert into the assembly port, and the risk of fracture is lower, and it is more favorable to improve product service life.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, specifically to a spray arm assembly and a dishwasher. Background Technology

[0002] The spray arm of a dishwasher is an important component for the dishwasher to clean dishes effectively. Currently, the main spray arm structures on the market include conventional straight spray arms or irregularly shaped spray arms, such as X-shaped, three-pronged, or planetary spray arms. The purpose of this design is to increase the angle of the spray nozzles and the frequency of spray, which helps to improve the cleaning effect of the dishes.

[0003] Existing planetary spray arms are mainly divided into coaxial and non-coaxial types. Coaxial means that the auxiliary spray arm and the main spray arm have the same rotation axis, while non-coaxial means that the rotation axes are parallel but not in the same position. The main spray arm and the auxiliary spray arm are usually connected by snap-fit. Specifically, the main spray arm has an assembly port, and the corresponding interface structure of the auxiliary spray arm has a snap-fit. By pressing the snap-fit ​​on the interface structure, it deforms and plugs into the assembly port. Because of the interference fit between the snap-fit ​​and the assembly port, and because the wall thickness of the interface structure cannot be too thin to ensure the connection strength, a lot of force is required to deform the snap-fit. This makes assembly difficult, and both installation and disassembly are laborious. Moreover, it is possible to break the snap-fit, rendering the auxiliary spray arm unusable. Utility Model Content

[0004] In view of this, the present invention provides a spray arm assembly and a dishwasher to solve the problem that the main spray arm and the auxiliary spray arm of the dishwasher in the prior art are connected by snap-fit, which makes assembly difficult.

[0005] In a first aspect, this utility model provides a spray arm assembly, comprising: The main spray arm is equipped with an assembly port; The auxiliary spray arm is detachably installed at the assembly port via an assembly component. The assembly component is a ring structure and is formed by assembling at least two assemblies. The auxiliary spray arm is provided with an interface structure suitable for docking with the assembly port. At least two assemblies are respectively fitted onto the outer periphery of the interface structure and assembled to form a ring-shaped assembly component. The outer periphery of the assembly component is provided with a locking structure, and the assembly opening is provided with a locking and engaging structure. After the auxiliary spray arm is assembled with the assembly component, it is rotated and locked onto the main spray arm through the locking structure and the locking and engaging structure. Beneficial effects: The assembly component adopts a ring structure formed by assembling at least two assemblies. During installation, the assembly component is first disassembled, and then the assemblies are installed one by one onto the interface structure of the auxiliary spray arm and assembled to form a ring assembly component. Then, the assembly component and the auxiliary spray arm are assembled into an assembly assembly and installed onto the main spray arm through the assembly port. Then, the assembly assembly is rotated in the direction of rotation of the auxiliary spray arm so that the entire assembly assembly and the main spray arm are engaged together, thereby forming a stable spray arm assembly structure. During disassembly, the assembly component and the auxiliary spray arm are rotated in the opposite direction to disengage the engaging structure from the engaging fit structure, thereby separating the assembly assembly from the main spray arm. Then, each assembly is removed from the interface structure one by one to achieve the disassembly and assembly of the auxiliary spray arm.

[0006] In this application, the assembly component adopts a ring structure formed by assembling multiple assemblies, which is more convenient to assemble and disassemble than a one-piece ring structure. The auxiliary spray arm is installed at the assembly port of the main spray arm through the above-mentioned assembly component, making the installation and disassembly of the auxiliary spray arm very easy and labor-saving, and quick and efficient. This reduces the assembly difficulty, and the buckle does not need to be inserted into the assembly port with interference fit, which reduces the risk of breakage and is more conducive to improving the product's service life. This effectively solves the problem that the existing auxiliary spray arm is directly connected to the assembly port by buckle, which requires a lot of force to insert the buckle into the assembly port, making the assembly difficult, the installation and disassembly very laborious, and potentially breaking the buckle, rendering the auxiliary spray arm unusable.

[0007] In one optional embodiment, two adjacent assemblies are provided with a first limiting structure at the splicing position, and a first limiting fit structure is provided at the other. The first limiting structure and the first limiting fit structure are mutually limiting fit in the axial direction of the assembled components.

[0008] Beneficial effects: The first limiting structure and the second limiting matching structure can make adjacent assemblies axially limited, preventing two adjacent assemblies from disengaging in the axial direction, thus facilitating assembly.

[0009] In one optional embodiment, two adjacent assemblies are provided with a second limiting structure at the splicing position, and a second limiting fit structure is provided at the other. The second limiting structure and the second limiting fit structure are radially limited and fitted together.

[0010] Beneficial effects: The second limiting structure and the second limiting cooperation structure can make adjacent assemblies form a limit in the radial direction, preventing two adjacent assemblies from disengaging in the radial direction, thus facilitating assembly.

[0011] In one alternative embodiment, the assembly component includes: The first assembly and the second assembly are assembled to form a ring-shaped assembly component; The first assembly has a first protrusion at one end and a first notch at the other end. Along the axial direction of the assembly component, the first protrusion and the first notch are distributed on both sides of the first assembly. One end of the second assembly is provided with a second notch that cooperates with the first protrusion stop, and the other end is provided with a second protrusion that cooperates with the first notch stop; The first protrusion and the second notch, as well as the first notch and the second protrusion, form a limiting position in the axial direction of the assembly component.

[0012] Beneficial effects: The assembly component consists of two parts: a first assembly and a second assembly. While facilitating the disassembly and assembly of the auxiliary spray arm, it minimizes the number of parts, simplifies the structure, and improves assembly efficiency. The first assembly and the second assembly can be nested together to form a ring structure through the cooperation of the first protrusion and the second notch, as well as the first notch and the second protrusion. This effectively ensures the firmness and stability of the fit between the first assembly and the second assembly. Furthermore, by setting the first protrusion and the first notch on both sides of the first assembly, the first protrusion and the second notch, as well as the first notch and the second protrusion, can form an interlocking structure, locking the two assemblies in the axial direction of the assembly component, resulting in better anti-detachment effect.

[0013] In one alternative embodiment, an annular protrusion is provided on the outer periphery of the assembly component, and a limiting step is formed between the annular protrusion and the outer peripheral wall of the assembly component. The assembly opening is constructed as a stepped hole, and the limiting step and the stepped hole are positioned and engaged.

[0014] Beneficial effects: The annular protrusions on the outer periphery of the assembly components can be positioned with the assembly opening, which not only improves assembly efficiency, but also blocks water flow and prevents water from overflowing from the gap between the assembly opening and the assembly components, thus improving the sealing effect between the assembly opening and the assembly components.

[0015] In one alternative embodiment, the engaging structure includes engaging ribs disposed on the outer peripheral wall of the assembly component; The engaging structure includes a engaging rib fixedly installed on the outer wall of the main spray arm. The engaging rib is located on the outer periphery of the assembly port, and an engaging groove is formed between the engaging rib and the outer wall of the main spray arm. Beneficial effects: The snap-fit ​​structure and snap-fit ​​mating structure adopt snap-fit ​​ribs and mating ribs, which are simple in structure and easy to process and form. Furthermore, by setting the snap-fit ​​mating structure on the outer wall of the main spray arm, the assembly part of the assembly component and the main spray arm is located on the outside of the main spray arm, so that the operator can perform disassembly and assembly operations more intuitively and efficiently.

[0016] In one alternative embodiment, there are multiple engaging ribs, which are spaced apart along the circumference of the assembly component, and multiple engaging ribs are correspondingly provided.

[0017] Beneficial effects: By setting multiple engaging ribs and corresponding matching ribs, the engaging effect between the assembly components and the main spray arm can be further improved, thereby improving the stability of the auxiliary spray arm structure.

[0018] In one alternative implementation, the interface structure includes: The main body of the interface is cylindrical. The interface body is fixedly mounted on the auxiliary spray arm at one end and fixedly mounted on the other end; Once the assembly is attached to the interface structure, it is positioned between the clip and the secondary spray arm.

[0019] Beneficial effects: The buckle set on the end of the interface body can limit the assembly and prevent it from detaching from the interface body, thereby improving the stability of the assembly components and the auxiliary spray arm.

[0020] In one alternative implementation, the maximum outer diameter of the interface structure is smaller than the inner diameter of the assembly port, and the outer diameter of the assembly component is larger than the inner diameter of the assembly port.

[0021] Beneficial effects: By setting the maximum outer diameter of the interface structure to be smaller than the inner diameter of the assembly port, the interface structure can be assembled into the assembly port without extrusion deformation, making it easier and less labor-intensive. By setting the outer diameter of the assembly component to be larger than the inner diameter of the assembly port, the assembly component can be limited outside the main spray arm, facilitating rotation operation.

[0022] In one optional embodiment, the secondary spray arm is a cross-shaped spray arm, and the interface structure is located in the middle of the cross-shaped secondary spray arm. And / or, the main spray arm is a straight spray arm with a water inlet in the middle and an assembly port on one side.

[0023] Beneficial effects: By adopting the above design, the main spray arm and auxiliary spray arm can wash more dishes, meet the needs of dishwashers with large load capacity, and achieve better washing results. This effectively solves the problem that existing dishwashers, as the load capacity increases and the dishes are placed more densely, cannot clean all the dishes properly with conventional single-line spray arms.

[0024] Secondly, this utility model also provides a dishwasher, including the spray arm assembly of any of the above embodiments. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the main spray arm in an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of a portion of the image; Figure 3 This is a top view of the main spray arm and assembly components after assembly in an embodiment of this utility model; Figure 4 for Figure 3 Sectional view at point AA; Figure 5 for Figure 4 A magnified view of a portion of the image; Figure 6 This is a schematic diagram of the assembly components in the assembled state in an embodiment of this utility model; Figure 7 for Figure 6 A structural schematic diagram of the first assembly; Figure 8 for Figure 6 A structural schematic diagram of the second assembly; Figure 9 This is a schematic diagram of the assembly components in a separated state in an embodiment of this utility model; Figure 10 for Figure 9 Top view; Figure 11 This is a schematic diagram of the auxiliary spray arm in an embodiment of the present invention; Figure 12 This is a bottom view of the main spray arm and the auxiliary spray arm after assembly in an embodiment of this utility model. Figure 13 for Figure 12 Sectional view at point BB; Figure 14 for Figure 13 Enlarged view of point C in the middle.

[0027] Explanation of reference numerals in the attached figures: 1. Main spray arm; 11. Assembly port; 12. Snap-fit ​​structure; 2. Secondary spray arm; 21. Interface structure; 211. Interface body; 212. Buckle; 3. Assembly components; 31. Interlocking structure; 32. Annular protrusion; 301. First assembly; 3011. First protrusion; 3012. First notch; 302, Second assembly; 3021, Second protrusion; 3022, Second notch. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0032] The following is combined Figures 1 to 14 The following describes embodiments of the present invention.

[0033] According to an embodiment of the present invention, in one aspect, the present invention provides a spray arm assembly, including a main spray arm 1 and a secondary spray arm 2. The secondary spray arm 2 is provided with an assembly port 11. The secondary spray arm 2 is detachably installed on the assembly port 11 by an assembly component 3. The assembly component 3 is a ring structure and is formed by assembling at least two assemblies. The secondary spray arm 2 is provided with an interface structure 21 suitable for docking with the assembly port 11. At least two assemblies are respectively fitted onto the outer periphery of the interface structure 21 and assembled to form the ring assembly component 3. The outer periphery of the assembly component 3 is provided with a locking structure 31, and the assembly port 11 is provided with a locking and engaging structure 12. After the secondary spray arm 2 and the assembly component 3 are assembled together, they are rotatably locked onto the main spray arm 1 by the locking structure 31 and the locking and engaging structure 12. In the above embodiment, the assembly component 3 adopts a ring structure formed by assembling at least two assemblies. During installation, the assembly component 3 is first disassembled, and then the assemblies are installed one by one onto the interface structure 21 of the auxiliary spray arm 2 and assembled to form a ring assembly component 3. Then, the assembly component 3 and the auxiliary spray arm 2 are assembled into an assembly assembly through the assembly port 11 and installed onto the main spray arm 1. Then, the assembly assembly is rotated in the direction of rotation of the auxiliary spray arm 2 so that the entire assembly assembly is engaged with the main spray arm 1, thereby forming a stable spray arm assembly structure. During disassembly, the assembly component 3 and the auxiliary spray arm 2 are rotated in the opposite direction to disengage the engaging structure 31 from the engaging engagement structure 12, thereby separating the assembly assembly from the main spray arm 1. Then, each assembly is removed from the interface structure 21 one by one to achieve the disassembly and assembly of the auxiliary spray arm 2.

[0034] In this application, the auxiliary spray arm 2 is rotatably connected to the assembly port of the main spray arm 1 and communicates with the main spray arm 1. The assembly component 3 adopts a ring structure formed by assembling multiple assemblies, which is more convenient to assemble and disassemble than an integrated ring structure. The auxiliary spray arm 2 is installed at the assembly port 11 of the main spray arm 1 through the above-mentioned assembly component 3, making the installation and disassembly of the auxiliary spray arm 2 very easy and labor-saving, and the assembly and disassembly are very quick and efficient, reducing the assembly difficulty. In addition, the buckle 212 does not need to be interference-inserted into the assembly port 11, which reduces the risk of breakage and is more conducive to improving the service life of the product. It effectively solves the problem that the existing auxiliary spray arm 2 is directly snapped into the assembly port 11 by the buckle 212, which requires a lot of force to insert the buckle 212 into the assembly port 11, making the assembly difficult, the installation and disassembly very laborious, and the buckle 212 may be broken, causing the auxiliary spray arm 2 to become unusable.

[0035] Based on the above embodiments, as a further defined embodiment, the auxiliary spray arm 2 has a locked position and an unlocked position. When the auxiliary spray arm 2 is in the locked position, the engaging structure 31 and the engaging engagement structure 12 are directly opposite and engaged. When the auxiliary spray arm 2 is in the locked position, the engaging structure 31 and the engaging engagement structure 12 are correspondingly engaged. When the auxiliary spray arm 2 is in the unlocked position, the engaging structure 31 and the engaging engagement structure 12 are misaligned and disengaged. The auxiliary spray arm 2 has an unlocking direction and a locking direction. The locking direction is consistent with the rotation direction of the auxiliary spray arm 2, and the unlocking direction is opposite to the locking direction. By rotating the auxiliary spray arm 2 along the locking direction, the auxiliary spray arm 2 can be kept in the locked position. By rotating the auxiliary spray arm 2 in the opposite direction, the auxiliary spray arm 2 can be switched from the locked position to the unlocked position.

[0036] In one optional embodiment, two adjacent assemblies are provided with a first limiting structure at the splicing position, and a first limiting fit structure is provided at the other. The first limiting structure and the first limiting fit structure are engaged in the axial direction of the assembly component 3.

[0037] In the above embodiments, the first limiting structure and the second limiting engagement structure can make adjacent assemblies axially limited, preventing two adjacent assemblies from disengaging in the axial direction and facilitating assembly.

[0038] Based on the above embodiments, as a further defined embodiment, one of the first limiting structure and the other of the first limiting mating structure is a rib and the other is a notch, or one is a protruding post and the other is an insertion hole.

[0039] In one optional embodiment, two adjacent assemblies are provided with a second limiting structure at the splicing position, and a second limiting fit structure is provided at the other. The second limiting structure and the second limiting fit structure are radially upper limit fits.

[0040] In the above embodiments, the second limiting structure and the second limiting engagement structure enable adjacent assemblies to form a radial limit, preventing two adjacent assemblies from disengaging radially and facilitating assembly.

[0041] Based on the above embodiments, as a further defined embodiment, one of the second limiting structure and the other of the second limiting mating structure is a protrusion and the other is a groove.

[0042] In one optional embodiment, the assembly component 3 includes a first assembly 301 and a second assembly 302, which are assembled to form an annular assembly component 3. One end of the first assembly 301 is provided with a first protrusion 3011 and the other end is provided with a first notch 3012. Along the axial direction of the assembly component 3, the first protrusion 3011 and the first notch 3012 are distributed on both sides of the first assembly 301. One end of the second assembly 302 is provided with a second notch 3022 that cooperates with the first protrusion 3011, and the other end is provided with a second protrusion 3021 that cooperates with the first notch 3012. The first protrusion 3011 and the second notch 3022, as well as the first notch 3012 and the second protrusion 3021, form a limiting position in the axial direction of the assembly component 3.

[0043] In the above embodiment, the assembly component 3 consists of two parts: a first assembly 301 and a second assembly 302. While facilitating the disassembly and assembly of the auxiliary spray arm 2, it minimizes the number of parts, simplifies the structure, and improves assembly efficiency. The first assembly 301 and the second assembly 302 can be nested together to form a ring structure through the cooperation of the first protrusion 3011 and the second notch 3022, and the first notch 3012 and the second protrusion 3021. This effectively ensures the firmness and stability of the engagement of the first assembly 301 and the second assembly 302. Furthermore, by setting the first protrusion 3011 and the first notch 3012 on both sides of the first assembly 301, the first protrusion 3011 and the second notch 3022, and the first notch 3012 and the second protrusion 3021 can form an interlocking structure, locking the two assemblies in the axial direction of the assembly component 3, thus improving the anti-detachment effect.

[0044] Based on the above embodiments, as a further defined embodiment, both the first assembly 301 and the second assembly 302 are arc-shaped structures. The first protrusion 3011 is a protrusion provided on one end face of the first assembly 301, and the second notch 3022 is an L-shaped notch provided on the other end face of the first assembly 301. The assembly component 3 has a first side end face and a second side end face that are disposed opposite to each other. The first protrusion 3011 is provided on the side of the first assembly 301 near the first side end face, and the first notch 3012 is provided on the side near the second side end face. The second protrusion 3021 is correspondingly provided on the side of the second assembly 302 near the second side end face, and the second notch 3022 is provided on the side near the first side end face.

[0045] Based on the above embodiments, as a further defined embodiment, the first protrusion 3011 and the first notch 3012 constitute a first limiting structure, and the second protrusion 3021 and the second notch 3022 constitute a second limiting structure. The second limiting structure is provided on the side wall of the first protrusion 3011 away from the first side end face, and a corresponding second limiting fitting structure is provided on the inner wall of the second notch 3022; or, the second limiting structure is provided on the side wall of the second protrusion 3021 away from the second side end face, and a corresponding second limiting fitting structure is provided on the inner wall of the first notch 3012, wherein one of the second limiting structure and the second limiting fitting structure is a protrusion and the other is a groove.

[0046] In one optional embodiment, an annular protrusion 32 is provided on the outer periphery of the assembly component 3, and a limiting step is formed between the annular protrusion 32 and the outer peripheral wall of the assembly component 3. The assembly opening 11 is constructed as a stepped hole, and the limiting step and the stepped hole are positioned and engaged.

[0047] In the above embodiment, the annular protrusion 32 provided on the outer peripheral wall of the assembly component 3 can be positioned with the assembly port 11, which can not only improve the assembly efficiency, but also block the water flow and prevent water from overflowing from the gap between the assembly port 11 and the assembly component 3, thereby improving the sealing effect between the assembly port 11 and the assembly component 3.

[0048] Based on the above embodiments, as a further defined embodiment, the annular protrusion 32 is disposed in the middle part of the outer peripheral wall of the assembly member 3, and the outer diameter of the assembly member 3 gradually increases and then decreases along the axial direction of the assembly member 3. The engaging structure 31 is disposed on the annular protrusion 32, specifically, the engaging structure 31 is disposed on the outer peripheral wall of the annular protrusion 32.

[0049] In one optional embodiment, the engaging structure 31 includes engaging ribs disposed on the outer peripheral wall of the assembly component 3; the engaging mating structure 12 includes mating ribs fixedly disposed on the outer wall of the main spray arm 1, the mating ribs being located on the outer periphery of the assembly opening 11, and an engaging groove being formed between the mating ribs and the outer wall of the main spray arm 1. In the above embodiments, the snap-fit ​​structure 31 and the snap-fit ​​mating structure 12 adopt the structural form of snap-fit ​​ribs and mating ribs, which are simple in structure and easy to process and form. Furthermore, by setting the snap-fit ​​mating structure 12 on the outer wall of the main spray arm 1, the assembly part of the assembly component 3 and the main spray arm 1 is located on the outside of the main spray arm 1, so that the operator can perform disassembly and assembly operations more intuitively and efficiently.

[0050] Based on the above embodiments, as a further defined embodiment, the engaging rib is fixedly disposed on the outer peripheral wall of the annular protrusion 32, and the engaging rib is an arc-shaped rib or a fan-shaped rib. The mating rib is fixedly disposed on the side wall of the main spray arm 1 near the auxiliary spray arm 2. For example, if the auxiliary spray arm 2 is installed below the main spray arm 1, the mating rib is fixedly disposed on the bottom wall of the main spray arm 1; or if the auxiliary spray arm 2 is installed above the main spray arm 1, the mating rib is fixedly disposed on the top wall of the main spray arm 1. In the accompanying drawings of this embodiment, the example of the auxiliary spray arm 2 being installed below the main spray arm 1 is shown. The rib includes an L-shaped rib body with a longitudinal cross section and a limiting baffle fixedly installed at one end of the rib body. The rib body, the limiting baffle and the main spray arm 1 are fixed together and the three form a limiting groove. During installation, when the auxiliary spray arm 2 rotates to the set locking position in the normal rotation direction, the rib engages with the limiting baffle to form a stop and is positioned, and is axially limited within the rib body. During disassembly, the assembly component 3 and the auxiliary spray arm 2 are rotated in the opposite direction to move the rib out of the rib body, thereby separating the assembly component 3 and the auxiliary spray arm 2 from the main spray arm 1.

[0051] In one optional embodiment, there are multiple engaging ribs, which are spaced apart along the circumference of the assembly member 3, and multiple engaging ribs are correspondingly provided.

[0052] In the above embodiments, by providing multiple engaging ribs and correspondingly providing multiple cooperating ribs, the engaging effect between the assembly component 3 and the main spray arm 1 can be further improved, thereby improving the stability of the auxiliary spray arm 2 structure.

[0053] Based on the above embodiments, as a further defined embodiment, multiple engaging ribs are evenly spaced along the circumference of the assembly component 3, and multiple mating ribs are evenly spaced along the circumference of the assembly opening 11. For example, four mating ribs are distributed on the lower surface of the main spray arm 1, and four engaging grooves are formed in the four engaging ribs. The four engaging ribs are evenly distributed along the assembly opening 11, which is a stepped structure. The upper end face of the assembly component 3 fits with the stepped surface of the assembly opening 11. The annular protrusion 32 in the middle part of the assembly fits with the lower surface of the main spray arm 1. The four protruding fan-shaped engaging ribs on the outer periphery of the annular protrusion 32 are assembled with the engaging grooves to form a stable structure.

[0054] In one optional embodiment, the interface structure 21 includes an interface body 211 and a buckle 212. The interface body 211 is cylindrical. One end of the interface body 211 is fixedly mounted on the auxiliary spray arm 2, and the other end is fixedly mounted with the buckle 212. When the assembly is fitted onto the interface structure 21, it is limited between the buckle 212 and the auxiliary spray arm 2.

[0055] In the above embodiment, the buckle 212 provided on the end of the interface body 211 can limit the assembly and prevent the assembly from detaching from the interface body 211, thereby improving the stability of the assembly component 3 and the auxiliary spray arm 2.

[0056] Based on the above embodiments, as a further defined embodiment, there are multiple snap fasteners 212, which are arranged at intervals along the circumference of the interface body 211. For example, there are four snap fasteners 212, which are evenly spaced along the circumference of the interface body 211.

[0057] In one alternative implementation, the maximum outer diameter of the interface structure 21 is smaller than the inner diameter of the assembly port 11, and the outer diameter of the assembly component 3 is larger than the inner diameter of the assembly port 11.

[0058] In the above embodiments, by setting the maximum outer diameter of the interface structure 21 to be smaller than the inner diameter of the assembly port 11, the interface structure 21 can be assembled into the assembly port 11 without extrusion deformation, which is easier and less labor-intensive. By setting the outer diameter of the assembly component 3 to be larger than the inner diameter of the assembly port 11, the assembly component 3 can be limited outside the main spray arm 1, which facilitates rotation operation.

[0059] In one optional embodiment, the auxiliary spray arm 2 is a cross-shaped spray arm, and the interface structure 21 is located in the middle of the cross-shaped auxiliary spray arm 2; the main spray arm 1 is a straight spray arm, with a water inlet in the middle and an assembly port 11 on one side.

[0060] In the above embodiments, the main spray arm 1 and the auxiliary spray arm 2, by adopting the above design, can clean more tableware, meet the needs of large set capacity dishwashers, and have better washing effect. This effectively solves the problem that as the number of set capacity increases and the tableware is placed more densely, conventional single-line spray arms are difficult to clean all the tableware.

[0061] According to an embodiment of the present invention, in another aspect, a dishwasher is provided, including the spray arm assembly of any of the above embodiments.

[0062] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the protection scope of the embodiments of this application.

Claims

1. A spray arm assembly, characterized in that, include: The main spray arm (1) is provided with an assembly port (11). A secondary spray arm (2) is detachably installed on the assembly port (11) via an assembly component (3). The assembly component (3) is a ring structure and is formed by assembling at least two assemblies. The auxiliary spray arm (2) is provided with an interface structure (21) suitable for docking with the assembly port (11), and the at least two assemblies are respectively fitted onto the outer periphery of the interface structure (21) and assembled to form a ring-shaped assembly component (3). The outer periphery of the assembly component (3) is provided with a locking structure (31), and the assembly port (11) is provided with a locking and fitting structure (12). After the auxiliary spray arm (2) is assembled with the assembly component (3), it is rotated and locked onto the main spray arm (1) by the locking structure (31) and the locking and fitting structure (12).

2. The spray arm assembly according to claim 1, characterized in that, Two adjacent assemblies are provided with a first limiting structure at the splicing position, and a first limiting fit structure is provided at the other position. The first limiting structure and the first limiting fit structure are engaged in the axial direction of the assembly component (3). And / or, at the splicing position, one of the two adjacent assemblies is provided with a second limiting structure and the other is provided with a second limiting fit structure, and the second limiting structure and the second limiting fit structure are radially upper limit fits on the assembly component (3).

3. The spray arm assembly according to claim 1, characterized in that, The assembly component (3) includes: The first assembly (301) and the second assembly (302) are assembled to form a ring-shaped assembly component (3). The first assembly (301) has a first protrusion (3011) at one end and a first notch (3012) at the other end. Along the axial direction of the assembly member (3), the first protrusion (3011) and the first notch (3012) are distributed on both sides of the first assembly (301). The second assembly (302) has a second notch (3022) at one end that cooperates with the stop of the first protrusion (3011), and a second protrusion (3021) at the other end that cooperates with the stop of the first notch (3012). The first protrusion (3011) and the second notch (3022), and the first notch (3012) and the second protrusion (3021) form a limit in the axial direction of the assembly member (3).

4. The spray arm assembly according to any one of claims 1 to 3, characterized in that, The outer periphery of the assembly component (3) is provided with an annular protrusion (32), and a limiting step is formed between the annular protrusion (32) and the outer periphery of the assembly component (3). The assembly opening (11) is constructed as a stepped hole, and the limiting step and the stepped hole are positioned and engaged.

5. The spray arm assembly according to any one of claims 1 to 3, characterized in that, The engaging structure (31) includes engaging ribs disposed on the outer peripheral wall of the assembly component (3); The engaging structure (12) includes a engaging rib fixedly disposed on the outer wall of the main spray arm (1). The engaging rib is located on the outer periphery of the assembly port (11). The engaging rib and the outer wall of the main spray arm (1) form an engaging groove.

6. The spray arm assembly according to claim 5, characterized in that, The engaging ribs are multiple and are spaced apart along the circumferential direction of the assembly component (3), and the mating ribs are provided in multiple corresponding ways.

7. The spray arm assembly according to any one of claims 1 to 3, characterized in that, The interface structure (21) includes: The interface body (211) is cylindrical; The buckle (212) is fixedly installed on one end of the interface body (211) on the auxiliary spray arm (2) and the buckle (212) is fixedly installed on the other end. When the assembly is fitted onto the interface structure (21), it is positioned between the buckle (212) and the auxiliary spray arm (2).

8. The spray arm assembly according to claim 7, characterized in that, The maximum outer diameter of the interface structure (21) is smaller than the inner diameter of the assembly port (11), and the outer diameter of the assembly component (3) is larger than the inner diameter of the assembly port (11).

9. The spray arm assembly according to any one of claims 1 to 3, characterized in that, The secondary spray arm (2) is a cross-shaped spray arm, and the interface structure (21) is located in the middle of the cross-shaped secondary spray arm (2). And / or, the main spray arm (1) is a straight spray arm, with a water inlet in the middle and the assembly port (11) on one side.

10. A dishwasher, characterized in that, Includes the spray arm assembly as described in any one of claims 1 to 9.

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