Mounting structure, spraying assembly and dish washing machine

Abstract

The utility model relates to the field of household appliances, and discloses an installation structure, a spraying assembly and a dish washing machine. The installation structure is greatly simplified, the installation operation difficulty is small, the strength and reliability of the spraying arm structure can be improved, and the operation stability of the nozzle assembly is guaranteed. The mounting structure is applied to the spraying assembly, the spraying assembly comprises a spraying support and a spraying arm, the spraying support is provided with an assembly seat, the spraying arm is provided with an assembly hole, the assembly seat is rotationally assembled with the assembly hole through the mounting structure, the mounting structure comprises a guide structure and a limiting structure, the guide structure is arranged on the assembly seat and the assembly hole, and the limiting structure is arranged on the guide structure. The assembly seat is in inclined rotary butt joint with the assembly hole through a guide structure; the limiting structure is arranged on the assembling base and the assembling hole, and after the assembling base and the assembling hole are in rotary butt joint, the assembling base and the assembling hole are limited in the first direction through the limiting structure.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to an installation structure, a spray assembly, and a dishwasher. Background Technology

[0002] A dishwasher is a household appliance that automatically cleans dishes. It has functions such as automatic cleaning, drying, and sterilization. It can replace manual cleaning and has a good cleaning effect. It is convenient, time-saving and labor-saving to use, and has been widely welcomed by users.

[0003] The main structure of a dishwasher includes a spray assembly housed within the inner tub. This assembly sprays pressurized water jets onto the dishes, rinsing and cleaning them. The spray assembly primarily consists of a spray support and spray arms, with the spray arms mounted to the support using fasteners such as retaining nuts. During operation, water flows through a hollow conduit in the spray support into the spray arms, then exits through nozzles on the arms. The reaction force of the water flow propels the spray arms to rotate around the support. However, existing installation methods for the spray arms and supports involve numerous components, resulting in a complex assembly process, low efficiency, and the retaining nuts are prone to loosening and falling off during operation, leading to poor reliability of the spray assembly. Utility Model Content

[0004] In view of this, the present invention provides an installation structure, a spray assembly, and a dishwasher to solve the problems of existing spray assembly installation methods requiring many parts, having a complex assembly process, and having poor structural reliability.

[0005] In a first aspect, this utility model provides an installation structure applied to a spray assembly. The spray assembly includes a spray support and a spray arm. The spray support has a mounting base, and the spray arm has a mounting hole. The mounting base is rotatably assembled with the mounting hole via the installation structure. The installation structure is as follows:

[0006] A guide structure is provided on the mounting base and the mounting hole, and the mounting base is inclined and rotatably connected to the mounting hole through the guide structure;

[0007] A limiting structure is provided on the assembly base and the assembly hole. After the assembly base and the assembly hole are rotated and connected, the assembly base is limited in a first direction by the limiting structure and the assembly hole.

[0008] Beneficial effects: The installation structure of this utility model allows the mounting base to be rotated and assembled with the mounting hole without the need for other redundant parts. This greatly simplifies the assembly structure between the mounting base and the mounting hole and reduces the difficulty of installation. At the same time, it eliminates problems such as loosening and falling off of the spray arm caused by unreliable third-party parts (such as existing limit nuts), improves the strength and reliability of the spray arm structure, and thus ensures the service life of the spray assembly.

[0009] In one optional embodiment, the guide structure includes a guide portion and a guide groove that cooperate with each other, one of the guide portion and the guide groove being disposed in the mounting base, and the other being disposed in the mounting hole, wherein the extension direction of the guide groove is set at an angle relative to the installation direction of the spray support and the spray arm.

[0010] Beneficial effects: The installation structure of this utility model includes a guide structure that cooperates with each other and a guide groove. The extension direction of the guide groove is set at an angle relative to the installation direction of the spray support and the spray arm. This allows the assembly base and the assembly hole to be rotated and assembled in a relatively tilted posture when they are installed, which facilitates the installation operation and helps to reduce the assembly difficulty.

[0011] In one alternative embodiment, the guide groove includes a communicating entry section and an exit section, the entry section having an entry section inlet and an entry section outlet, and the exit section having an exit section inlet and an exit section outlet. In the extension direction of the guide groove, the cross-sectional dimension of the entry section gradually decreases from the entry section inlet to the entry section outlet, and the cross-sectional dimension of the exit section gradually increases from the exit section inlet to the exit section outlet.

[0012] Beneficial effects: The installation structure of this utility model has a guide groove that includes a connected entry section and an exit section. The guide groove is a groove with a special shape structure, which enables the mounting base and the mounting hole to be rotated and assembled in a relatively inclined posture without the need to add other redundant parts. The design concept is ingenious, which can simplify the installation structure, reduce the installation difficulty, and improve the assembly efficiency.

[0013] In one alternative embodiment, the inner wall at the entrance of the entry section is rounded.

[0014] Beneficial effects: The installation structure of this utility model has a rounded corner on the inner wall at the entrance of the entry section so that the guide part can smoothly enter the guide groove, improving the fit of the structure and making the rotational assembly process of the mounting base and the mounting hole smoother.

[0015] In one alternative embodiment, after the guide portion is inserted into the guide groove, the inner wall of the entry section located on the rear side of the guide portion in the rotation direction is inclined from the exit section inlet toward the inner wall of the opposite side.

[0016] Beneficial effects: In the installation structure of this utility model, after the guide part is inserted into the guide groove, the inner wall of the entry section located on the rear side of the guide part in the rotation direction is inclined from the exit section inlet toward the inner wall of the opposite side, so that the guide part can smoothly leave the guide groove, improve the fit of the structure, and make the rotation assembly process of the mounting base and the mounting hole smoother.

[0017] In one optional embodiment, after the guide portion is inserted into the guide groove, the inner wall of the departure section located in front of the guide portion in the rotation direction is rounded with the lower end face of the guide groove.

[0018] Beneficial effects: In the installation structure of this utility model, after the guide part is inserted into the guide groove, the inner wall of the departure section located in front of the rotation direction of the guide part and the lower end face of the guide groove are rounded, so that the guide part can smoothly leave the guide groove, improve the fit of the structure, and make the rotational assembly process of the mounting base and the mounting hole smoother.

[0019] In one optional embodiment, after the guide portion is inserted into the guide groove, the angle between the inner wall of the exit section outlet located on the rear side of the rotation direction of the guide portion and the lower end face of the guide groove is α, where the angle α ≥ 90°.

[0020] Beneficial effects: The installation structure of this utility model, in the range of the included angle α, that is, the inner wall of the departure section located on the rear side of the rotation direction of the guide part and the lower end face of the guide groove are not provided with chamfer or rounded corner, which can prevent the assembly seat from loosening when rotating and engaging with the assembly hole, thereby improving the structural reliability and operability.

[0021] In one optional implementation, the width of the exit section entrance is B1, the width of the entry section entrance is B2, and the width of the guide is A, satisfying B1≤A<B2.

[0022] Beneficial effects: When the installation structure of this utility model satisfies the above relationship B1≤A<B2, the guide part can smoothly enter and leave the guide groove, thereby realizing the rotational assembly of the mounting base and the mounting hole.

[0023] In one optional embodiment, the guide portion is disposed on the outer wall of the mounting base, the inner wall of the mounting hole is provided with a protrusion in the circumferential direction, and the guide groove is disposed on the protrusion.

[0024] Beneficial effects: The installation structure of this utility model has a guide part set on the outer wall of the mounting base, a protrusion set circumferentially on the inner wall of the mounting hole, and a guide groove set on the protrusion. This installation structure is easy to set up, does not occupy too much space, and helps to simplify the assembly operation.

[0025] In one optional embodiment, the limiting structure includes a first limiting part, a second limiting part, a first mating part, and a second mating part. The first limiting part and the second limiting part are disposed in the assembly hole, and the first mating part and the second mating part are disposed on the assembly base. After the assembly base is rotated and connected to the assembly hole, the first mating part is limited by the first limiting part in one orientation of the first direction, and the second mating part is limited by the second limiting part in another orientation of the first direction.

[0026] Beneficial effects: The installation structure of this utility model has a simple and easy-to-set limiting structure, good reliability, and makes full use of the structural space, which helps to simplify the installation structure.

[0027] In one alternative embodiment, the first mating portion and the guide portion are located at the same circumferential position of the mounting base, and the outer wall of the location of the first mating portion protrudes more than the guide portion in a second direction.

[0028] Beneficial effects: The installation structure of this utility model, with the first mating part and the guide part mounting seat in the same circumferential position, realizes full utilization of the setting space. Moreover, the outer wall of the first mating part in the second direction protrudes more than the guide part, which can simultaneously realize the guiding function for rotational installation and the limiting function after installation. The design concept is ingenious and reasonable, which is conducive to further simplifying the installation structure.

[0029] In one optional embodiment, the number of the first mating part and the guide part are both even, the guide groove mates with at least one of the guide parts, the first mating part and the guide part are alternately arranged circumferentially on the outer wall of the mounting base, and the guide parts are arranged opposite each other in pairs, and the first mating parts are arranged opposite each other in pairs.

[0030] Beneficial effects: The installation structure of this utility model has an even number of first mating parts and guide parts, which can achieve the balance of the mating base and the mating hole, so that the mating base and the mating hole can be smoothly rotated and assembled. After the mating base and the mating hole are assembled, the spray arm is subjected to more balanced force, thus improving the structural reliability.

[0031] In one optional embodiment, the distance between the first limiting part and the second limiting part along the first direction is X1, and the distance between the first mating part and the second mating part along the first direction is X2, satisfying X1≥X2, and X1-X2≤N, N≤1mm.

[0032] Beneficial effects: Under the above-mentioned relationship, the installation structure of this utility model can ensure the smooth rotation and installation of the mounting base and the mounting hole, as well as the reliable limiting in the first direction after the two are assembled, preventing the spray arm from loosening during operation.

[0033] In one optional embodiment, after the mounting base is rotated and docked with the mounting hole, the mounting base is further limited by the limiting structure in a second direction relative to the mounting hole, the second direction being set at an angle to the first direction.

[0034] Beneficial effects: The installation structure of this utility model, in addition to limiting the assembly base and the assembly hole in the first direction, can also limit the assembly base and the assembly hole in the second direction, further improving the structural reliability and preventing the spray arm from loosening during operation.

[0035] In one optional embodiment, the limiting structure further includes the outer edge of the first mating part. After the mounting base is rotated and connected with the mounting hole, the outer edge of the first mating part is limited in the second direction by the inner wall of the mounting hole.

[0036] Beneficial effects: In the installation structure of this utility model, after the mounting base and the mounting hole are rotated and connected, the outer edge of the first mating part is limited by the inner wall of the mounting hole in the second direction. This limiting structure utilizes the existing structure to limit the mounting base and the mounting hole in the second direction, improves the structural utilization rate, and helps to simplify the installation structure.

[0037] In one optional embodiment, the distance between the inner wall of the assembly hole and the second direction is L1, and the distance between the outer edge of the first mating part and the second direction is L2, satisfying L1≥L2, and L1-L2≤N, N≤1mm.

[0038] Beneficial effects: Under the above-mentioned relationship, the installation structure of this utility model can ensure the smooth rotation and installation of the mounting base and the mounting hole, as well as the reliable limiting in the second direction after the two are assembled, preventing the spray arm from loosening during operation.

[0039] Secondly, this utility model also provides a spray assembly, including a spray support and a spray arm. The spray support has a mounting base, and the spray arm has a mounting hole. The mounting base is rotatably assembled with the mounting hole via the installation structure described above.

[0040] Since the spray assembly of this utility model, including the installation structure of this utility model, has the same beneficial effects as the installation structure, it will not be described in detail here.

[0041] Thirdly, this utility model also provides a dishwasher, including the spray assembly as described above.

[0042] Since the dishwasher of this utility model, including the spray assembly of this utility model, has the same beneficial effects as the spray assembly, it will not be described in detail here. Attached Figure Description

[0043] 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.

[0044] Figure 1 This is an exploded view of the spray arm assembly of this utility model;

[0045] Figure 2 This is a cross-sectional view of the spray support in the spray arm assembly of this utility model.

[0046] Figure 3 for Figure 2 An enlarged schematic diagram of section C;

[0047] Figure 4 A cross-sectional view of the spray arm portion of this utility model. Figure 1 ;

[0048] Figure 5 A cross-sectional view of the spray arm portion of this utility model. Figure 2 ;

[0049] Figure 6 This is a cross-sectional view of the spray arm of this utility model;

[0050] Figure 7 for Figure 6 An enlarged schematic diagram of section D in the middle;

[0051] Figure 8 This is a schematic diagram of the assembly process of the spray arm and the spray support in this utility model;

[0052] Figure 9 This is a cross-sectional view of the spray arm and spray support after assembly in this utility model.

[0053] Explanation of reference numerals in the attached figures:

[0054] 1. Sprayer support; 101. Water inlet channel; 102. Installation unit;

[0055] 2. Spray arm; 201. Spray nozzle;

[0056] 3. Assembly base; 301. Water flow turning part; 302. Water flow outlet;

[0057] 4. Assembly holes;

[0058] 5. Guiding section;

[0059] 6. Guide groove; 601. Entry section; 6011. Entry section inlet; 6012. Entry section outlet; 602. Exit section; 6021. Exit section inlet; 6022. Exit section outlet; 603. First chamfer; 604. Second chamfer; 605. Third chamfer; 606. Inclined inner wall;

[0060] 7. Protrusion;

[0061] 8. First limiting part;

[0062] 9. Second limiting part;

[0063] 10. First Coordination Unit;

[0064] 11. Second Coordination Unit;

[0065] 12. Third limiting part. Detailed Implementation

[0066] 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.

[0067] The following is combined with Figures 1-9 This describes embodiments of the installation structure, spray assembly, and dishwasher of this utility model.

[0068] According to an embodiment of the present invention, an installation structure is provided for use in a spray assembly. The spray assembly includes a spray support 1 and a spray arm 2. The spray support 1 has a mounting base 3, and the spray arm 2 has a mounting hole 4. The mounting base 3 is rotatably assembled with the mounting hole 4 through the installation structure. The installation structure includes a guide structure and a limiting structure. The guide structure is disposed on the mounting base 3 and the mounting hole 4, and the mounting base 3 is tilted and rotatably connected with the mounting hole 4 through the guide structure. The limiting structure is disposed on the mounting base 3 and the mounting hole 4, and after the mounting base 3 is rotatably connected with the mounting hole 4, the mounting base 3 is limited in a first direction by the limiting structure.

[0069] In this installation structure, the mounting base 3 is rotated and assembled with the mounting hole 4 through the installation structure, which can complete the assembly without the need for other redundant parts. This greatly simplifies the assembly structure between the mounting base 3 and the mounting hole 4 and reduces the difficulty of the installation operation. At the same time, it eliminates problems such as the loosening and falling off of the spray arm 2 caused by the unreliability of third-party parts (such as the existing limit nut), improves the strength and reliability of the spray arm 2 structure, and thus ensures the service life of the spray assembly.

[0070] The installation structure of this embodiment is applied to a spray assembly, which can be used in cleaning appliances such as dishwashers. Taking the application of the spray assembly to a dishwasher as an example, the spray assembly is set in the inner tub of the dishwasher and is connected to the water circuit. When working, water is sprayed out from the spray nozzles of the spray assembly. Under the reaction force of the water flow, the spray arm 2 is pushed to rotate around the spray support 1 to achieve the cleaning of the tableware.

[0071] like Figure 1 As shown, the spray support 1 has a mounting base 3, and correspondingly, the spray arm 2 has a mounting hole 4. The mounting base 3 is rotated and assembled with the mounting hole 4 through the mounting structure of this embodiment, without the need for other additional assembly parts, thus simplifying the assembly structure, reducing assembly difficulty, and improving assembly efficiency. Moreover, using the mounting structure of this embodiment, the mounting base 3 and the mounting hole 4 only need to be rotated relative to each other to complete the assembly, which is simple to operate and highly reliable.

[0072] The installation structure includes a guide structure and a limiting structure. The guide structure is located at the mounting base 3 and the mounting hole 4. The guide structure provides assembly guidance during the assembly of the mounting base 3 and the mounting hole 4, enabling accurate and rapid rotational docking. After the mounting base 3 and the mounting hole 4 are assembled, the mounting base 3 is limited in the first direction by the limiting structure, preventing relative movement between the mounting base 3 and the mounting hole 4 in that direction, thereby improving the reliability of the installation of the spray support 1 and the spray arm 2.

[0073] Furthermore, the guide structure includes a guide part 5 and a guide groove 6 that cooperate with each other. One of the guide part 5 and the guide groove 6 is disposed in the mounting base 3, and the other is disposed in the mounting hole 4. The extension direction of the guide groove 6 is set at an angle relative to the installation direction of the spray support 1 and the spray arm 2.

[0074] like Figures 3-5 As shown, the guide structure includes a guide portion 5 and a guide groove 6 that cooperate with each other. During assembly, the guide portion 5 is adapted to be inserted into and pass through the guide groove 6. One of the guide portion 5 and the guide groove 6 is provided in the mounting base 3, and the other is provided in the mounting hole 4.

[0075] In this embodiment, the extension direction of the guide groove 6 is set at an angle relative to the installation direction of the spray support 1 and the spray arm 2, as shown in the figure. Figure 1As indicated by arrows c and c', the spray support 1 and the spray arm 2 are installed relative to each other. That is, the spray support 1 can be installed facing the spray arm 2 (arrow c), or the spray arm 2 can be installed facing the spray support 1 (arrow c'). Therefore, during assembly, either installation direction c or installation direction c' is acceptable. Since the extension direction of the guide groove 6 is at an angle relative to the installation directions of the spray support 1 and the spray arm 2, when the mounting base 3 and the mounting hole 4 are rotated together, the spray support 1 and the spray arm 2 need to be tilted first so that the guide part 5 enters the guide groove 6. In other words, the mounting base 3 and the mounting hole 4 are tilted and rotated together for installation.

[0076] In this embodiment, the guide portion 5 is disposed on the mounting base 3, and the guide groove 6 is disposed on the mounting hole 4. Of course, in other embodiments, depending on structural or assembly requirements, the guide portion 5 may be disposed on the mounting hole 4, and the guide groove 6 may be disposed on the mounting base 3.

[0077] Furthermore, the guide groove 6 includes an inlet section 601 and an outlet section 602 that are connected. The inlet section 601 has an inlet section 6011 and an outlet section 6012, and the outlet section 602 has an outlet section 6021 and an outlet section 6022. In the extension direction of the guide groove 6, the cross-sectional dimension of the inlet section 601 gradually decreases from the inlet section 6011 to the outlet section 6012, and the cross-sectional dimension of the outlet section 602 gradually increases from the outlet section 6021 to the outlet section 6022.

[0078] like Figures 6-7 As shown, the guide groove 6 in this embodiment is an irregularly shaped groove, or it can be said that the guide groove 6 is a groove with a special shape structure. The extension direction of the guide groove 6 is not a straight line, but can be a curve or a broken line, etc. Specifically, the guide groove 6 includes a connected entry section 601 and an exit section 602. The entry section 601 is suitable for the guide part 5 to enter, and the guide part 5 enters the guide groove 6 through the entry section 601. The exit section 602 is suitable for the guide part 5 to exit, and the guide part 5 exits the guide groove 6 through the exit section 602. The entry section 601 and the exit section 602 are interconnected, and in the insertion direction of the guide part 5 into the guide groove 6, the entry section 601 and the exit section 602 are arranged sequentially.

[0079] The entry section 601 has an entry section inlet 6011 and an entry section outlet 6012. The entry section inlet 6011 is also the inlet of the guide groove 6. The exit section 602 has an exit section inlet 6021 and an exit section outlet 6022. Since the guide groove 6 is a continuous groove, the entry section outlet 6012 is also the exit section inlet 6021 (the entry section outlet 6012 and the exit section inlet 6021 are in the same position). The exit section outlet 6022 is also the outlet of the guide groove 6.

[0080] Furthermore, in the extension direction of the guide groove 6, the cross-sectional dimensions of the entry section 601 gradually decrease from the entry section inlet 6011 to the entry section outlet 6012, while the cross-sectional dimensions of the exit section 602 gradually increase from the exit section inlet 6021 to the exit section outlet 6022. This shape of the guide groove 6 is more suitable for the movement trajectory of the guide part 5, improving the adaptability of the structure, so as to realize the assembly base 3 and the assembly hole 4 to be rotated and assembled in a relatively inclined posture, which facilitates the installation operation.

[0081] When the mounting base 3 and the mounting hole 4 are rotated and installed, the guide part 5 first enters the guide groove 6 from the entry section inlet 6011, then passes through the entry section outlet 6012 (exit section inlet 6021), and then leaves the guide groove 6 from the exit section outlet 6022.

[0082] Furthermore, the inner wall at the entrance 6011 of the entry section is rounded.

[0083] like Figure 5 As shown, the inner wall of the entry section inlet 6011 is rounded (guide R angle), that is, the entry section inlet 6011 has a first chamfer 603 and a second chamfer 604, so that the guide part 5 can smoothly enter the guide groove 6 from the entry section inlet 6011, avoid structural interference, improve the fit of the structure, and make the rotational assembly process of the mounting base 3 and the mounting hole 4 smoother.

[0084] Furthermore, after the guide section 5 is inserted into the guide groove 6, the inner wall of the entry section 601 located on the rear side of the rotation direction of the guide section 5 is inclined from the exit section inlet 6021 toward the inner wall of the opposite side.

[0085] Whether the mounting base 3 is installed onto the mounting hole 4, or the mounting hole 4 is installed onto the mounting base 3, the guide part 5 will be inserted into the guide groove 6. After the guide part 5 is inserted into the guide groove 6 from the entry section inlet 6011, the mounting base 3 and the mounting hole 4 rotate relative to each other. At this time, the guide part 5 rotates relative to the guide groove 6, and the direction of rotation is as follows: Figure 8 As indicated by the middle arrow d, that is, in Figure 8 From the perspective of the guide section 5, the guide section 5 moves relative to the guide groove 6 in the direction indicated by arrow d.

[0086] The inner wall of the entry section 601, located behind the guide section 5 in the direction of rotation, is inclined from the exit section inlet 6021 towards the inner wall of the opposite side, such as... Figure 5 As shown in the inclined inner wall 606, the inner wall of the entry section 601 of this structure does not obstruct the movement of the guide part 5, and can also play a guiding role.

[0087] Furthermore, after the guide part 5 is inserted into the guide groove 6, the inner wall of the exit section outlet 6022 located on the front side of the rotation direction of the guide part 5 is rounded with the lower end face of the guide groove 6.

[0088] When the guide section 5 enters the inlet 6011 of the guide section and inserts into the guide groove 6, and then enters the exit section 602, the inner wall of the exit section outlet 6022, located on the front side of the guide section 5 in the rotation direction, is rounded at the lower end face of the guide groove 6 (guide R angle). Figure 5 As shown, a third chamfer 605 is provided at the exit section outlet 6022 to facilitate the smooth exit of the guide section 5 from the exit section outlet 6022 away from the guide groove 6, avoid structural interference, improve the fit of the structure, and make the rotational assembly process of the mounting base 3 and the mounting hole 4 smoother.

[0089] Furthermore, after the guide part 5 is inserted into the guide groove 6, the inner wall of the departure section 602 located on the rear side of the rotation direction of the guide part 5 and the lower end face of the guide groove 6 form an angle α, where the angle α ≥ 90°.

[0090] like Figure 7 As shown, after the guide portion 5 is inserted into the guide groove 6, the inner wall of the exit section 602 located on the rear side of the rotation direction of the guide portion 5 is arranged along a first direction. In this embodiment, the first direction is axial. Figure 6 As shown by the middle arrow a-a'. The inner wall of the departure section 602 and the lower end face of the guide groove 6 are not chamfered or rounded, which can prevent the mounting base 3 from loosening when it rotates with the mounting hole 4, thus improving the structural reliability and operability.

[0091] Depending on the different assembly requirements, the included angle α can be 90°, 95°, 100°, 120°, etc.

[0092] Furthermore, the width of the exit section entrance 6021 is B1, the width of the entry section entrance 6011 is B2, and the width of the guide section 5 is A, satisfying B1≤A<B2.

[0093] like Figure 8 As shown, in order for the guide part 5 to smoothly enter and pass through the guide groove 6, the width of the exit section inlet 6021 is B1, the width of the entry section inlet 6011 is B2, and the width of the guide part 5 is A. The above values ​​satisfy B1≤A<B2, so as to ensure the smooth cooperation between the guide part 5 and the guide groove 6 and realize the rotational docking of the mounting base 3 and the mounting hole 4.

[0094] Furthermore, the guide portion 5 is disposed on the outer wall of the mounting base 3, and the inner wall of the mounting hole 4 is provided with a protrusion 7 along the circumferential direction, and the guide groove 6 is disposed on the protrusion 7.

[0095] In this embodiment, the guide portion 5 is disposed on the outer wall of the mounting base 3, such as... Figure 3As shown, the mounting base 3 is a columnar structure with a hollow structure on the side wall. Above the hollow structure is an upper annular structure. The guide part 5 is set on the outer wall of the upper annular structure. The upper annular structure is an irregular annular structure as a whole. The upper annular structure is missing a part of the structure where the guide part 5 is set. That is, the guide part 5 is located on the inner side of the original outer wall of the complete upper annular structure.

[0096] like Figure 4 As shown, the inner wall of the mounting hole 4 has a protrusion 7 arranged circumferentially. The protrusion 7 protrudes towards the center of the mounting hole 4 relative to the inner wall of the mounting hole 4, forming a boss-like structure. A guide groove 6 is provided on the protrusion 7, that is, the guide groove 6 is formed on the protrusion 7. The guide groove 6 is a through groove, connecting the outside and inside of the mounting hole 4. This circumferentially arranged protrusion 7 can improve the reliability of the mounting structure and facilitate installation operations.

[0097] Furthermore, the limiting structure includes a first limiting part 8, a second limiting part 9, a first mating part 10, and a second mating part 11. The first limiting part 8 and the second limiting part 9 are disposed in the assembly hole 4, and the first mating part 10 and the second mating part 11 are disposed on the assembly base 3. After the assembly base 3 is rotated and connected with the assembly hole 4, the first mating part 10 is limited by the first limiting part 8 in one direction in the first direction, and the second mating part 11 is limited by the second limiting part 9 in another direction in the first direction.

[0098] The mounting base 3 is limited by the limiting structure and the mounting hole 4 in a first direction. In this embodiment, the first direction is the axial direction. Figure 6 As indicated by the middle arrow a-a'. Specifically, the limiting structure includes a first limiting part 8, a second limiting part 9, a first mating part 10, and a second mating part 11. The first limiting part 8 and the second limiting part 9 are disposed within the assembly hole 4, as shown below. Figure 5 As shown, the first limiting part 8 is the bottom surface of the protrusion 7 and also the lower end surface of the guide groove 6. The interior of the assembly hole 4 near the bottom of the hole is provided with a stepped structure, and the upper surface of the stepped structure is the second limiting part 9.

[0099] like Figure 3 As shown, the mounting base 3 is a columnar structure with a hollowed-out sidewall. The hollowed-out structure has an upper annular structure above and a lower annular structure below. The guide part 5 is disposed on the outer wall of the missing part of the upper annular structure, while the first mating part 10 is located on the upper surface of the unmissing part of the upper annular structure, and the lower surface of the lower annular structure is the second mating part 11.

[0100] like Figure 9As shown, after the mounting base 3 and the mounting hole 4 are rotated and connected, the first mating part 10 is limited by the first limiting part 8 in one direction in the first direction, while the second mating part 11 is limited by the second limiting part 9 in another direction in the first direction. Specifically, when the spray assembly is working, when the mounting base 3 has an upward tendency, the first mating part 10 is limited by the first limiting part 8 and the mounting base 3 cannot move significantly; when the mounting base 3 has a downward tendency, the second mating part 11 is limited by the second limiting part 9 and the mounting base 3 cannot move significantly.

[0101] Furthermore, the distance between the first limiting part 8 and the second limiting part 9 along the first direction is X1, and the distance between the first mating part 10 and the second mating part 11 along the first direction is X2, satisfying X1≥X2, and X1-X2≤N, N≤1mm.

[0102] like Figure 9 As shown, the distance between the first limiting part 8 and the second limiting part 9 along the first direction is X1, and the distance between the first mating part 10 and the second mating part 11 along the first direction is X2. In order to allow the mounting base 3 to be smoothly rotated into the mounting hole 4, a certain gap may be maintained between the mounting base 3 and the mounting hole 4 in the first direction, or no gap may be maintained for a tight fit.

[0103] Therefore, X1≥X2, but the gap cannot be too large, so X1-X2≤N, N≤1mm, where N can be 1mm, 0.5mm, 0.2mm, 0.1mm, etc. When X1≥X2 and X1-X2≤N, N≤1mm, it can prevent the spray arm 2 from loosening during operation and ensure the smooth operation of the spray arm 2.

[0104] Furthermore, the first mating part 10 and the guide part 5 are located in the same circumferential position on the mounting base 3, and in the second direction, the outer wall of the first mating part 10 protrudes more than the guide part 5.

[0105] As mentioned earlier, the first mating part 10 and the guide part 5 are both located in the upper annular structure, at the same circumferential position of the mounting base 3. In this embodiment, the second direction is radial, such as... Figure 6 As indicated by the middle arrow b-b', the outer wall of the first mating part 10 protrudes beyond the guide part 5 in the second direction, simultaneously providing guidance for rotational installation and limiting the position after installation. This ingenious and reasonable design facilitates further simplification of the installation structure.

[0106] Furthermore, the number of first mating parts 10 and guide parts 5 is even, the guide groove 6 mates with at least one of the guide parts 5, the first mating parts 10 and guide parts 5 are alternately arranged circumferentially on the outer wall of the mounting base 3, and the guide parts 5 are arranged opposite each other in pairs, and the first mating parts 10 are arranged opposite each other in pairs.

[0107] To achieve balanced installation of the mounting base 3 and the mounting hole 4, the number of first mating parts 10 and guide parts 5 is always an even number, such as two, four, or six. Furthermore, the first mating parts 10 and guide parts 5 are alternately arranged circumferentially on the outer wall of the mounting base 3, with an even number of guide parts 5 arranged in pairs facing each other, and an even number of first mating parts 10 arranged in pairs facing each other. This allows the mounting base 3 and the mounting hole 4 to rotate smoothly during assembly, and after assembly, the spray arm experiences more balanced stress, improving structural reliability.

[0108] In this embodiment, there are two first mating parts 10 and two guide parts 5. The first mating parts 10 and the guide parts 5 are alternately arranged circumferentially on the outer wall of the mounting base 3. The two guide parts 5 are arranged opposite each other, and the two first mating parts 10 are arranged opposite each other.

[0109] It should be noted that the number of guide grooves 6 may be different from or the same as the number of guide parts 5, so that the guide groove 6 cooperates with at least one of the guide parts 5. That is, at least one guide groove 6 is provided, such as one, two, three, etc. When there is one guide groove 6, the guide groove 6 cooperates with one guide part 5 (regardless of the number of guide parts 5). When there are two or more guide grooves 6, the guide groove 6 cooperates with two or more guide parts 5 (regardless of the number of guide parts 5). In this embodiment, there is one guide groove 6, and the guide groove 6 cooperates with one of the guide parts 5.

[0110] Furthermore, after the mounting base 3 and the mounting hole 4 are rotated and connected, the mounting base 3 is also limited by the mounting hole 4 in the second direction through the limiting structure, and the second direction is set at an angle to the first direction.

[0111] The limiting structure can limit the mounting base 3 and the mounting hole 4 not only in the first direction, but also in the second direction. In this embodiment, the first direction is axial, the second direction is radial, and the first direction is perpendicular to the second direction.

[0112] Furthermore, the limiting structure also includes the outer edge of the first mating part 10. After the mounting base 3 and the mounting hole 4 are rotated and connected, the outer edge of the first mating part 10 is limited by the inner wall of the mounting hole 4 in the second direction.

[0113] The limiting structure also includes the outer edge of the first mating part 10, which is limited in the second direction by the inner wall of the mounting hole 4 (i.e., the third limiting part 12), thereby realizing the limiting of the mounting base 3 and the mounting hole 4 in the second direction.

[0114] like Figure 9As shown, the distance between the inner wall of the assembly hole 4 and the second direction is L1, and the distance between the outer edge of the oppositely arranged first mating part 10 and the second direction is L2, satisfying L1≥L2, and L1-L2≤N, N≤1mm.

[0115] The distance along the second direction of the inner wall of the assembly hole 4 is L1, and the distance along the second direction of the outer edge of the oppositely arranged first mating part 10 is L2. In order to allow the assembly seat 3 to be smoothly rotated into the assembly hole 4, a certain gap can be maintained between the assembly seat 3 and the assembly hole 4 in the second direction, or no gap can be left for the purpose of tight fit.

[0116] Therefore, L1 ≥ L2, but the gap cannot be too large. Thus, L1 - L2 ≤ N, N ≤ 1 mm, where N can be 1 mm, 0.8 mm, 0.5 mm, 0.3 mm, 0.2 mm, 0.1 mm, etc. When L1 ≥ L2 and L1 - L2 ≤ N, N ≤ 1 mm, the spray support 1 and the spray arm 2 can be positioned as close as possible to the same geometric axis, preventing the spray arm 2 from swinging excessively or becoming loose during operation.

[0117] This embodiment also includes a spray assembly, comprising a spray support 1 and a spray arm 2. The spray support 1 has a mounting base 3, and the spray arm 2 has a mounting hole 4. The mounting base 3 is rotatably assembled with the mounting hole 4 via the installation structure described above.

[0118] This spray assembly can be used in cleaning appliances such as dishwashers. Taking the application of the spray assembly in a dishwasher as an example, the spray assembly is installed in the inner tub of the dishwasher and is connected to the water circuit. When working, water is sprayed out from the spray nozzles of the spray assembly. Under the reaction force of the water flow, the spray arm 2 is pushed to rotate around the spray support 1 to achieve the cleaning of the tableware.

[0119] In this spray assembly, the mounting base 3 is rotated and assembled with the mounting hole 4 through the mounting structure of this embodiment. The assembly can be completed without the need for other redundant parts, which greatly simplifies the assembly structure between the mounting base 3 and the mounting hole 4 and reduces the difficulty of the installation operation. At the same time, it eliminates problems such as the spray arm loosening and falling off due to the unreliability of third-party parts (such as existing limit nuts), improves the strength and reliability of the spray arm structure, and thus ensures the service life of the spray assembly.

[0120] like Figure 1 and Figure 2The spray support 1 shown is hollow inside, and this hollow structure is the water inlet channel 101 of the spray support 1. The mounting base 3 is located at the outlet of the water inlet channel 101. The mounting base 3 is a columnar structure with a hollow structure on the side wall. The through hole of the hollow structure is the water outlet 302. The hollow structure has an upper annular structure above and a lower annular structure below. The water outlet 302 is located between the upper annular structure and the lower annular structure, and multiple water outlets 302 are arranged circumferentially.

[0121] The lower annular structure of the mounting base 3 is a closed structure in the axial direction, and a water flow deflector 301 is provided on the upper surface of the lower annular structure (the side of the lower annular structure facing the water inlet channel 101). The middle part of the water flow deflector 301 protrudes upward, and the water flow deflector 301 as a whole has a conical structure that is pointed at the top and wide at the bottom. The water flow deflector 301 is used to deflect and guide the water flow, reducing the resistance when the water flows towards the spray hole 201 on the spray arm 2.

[0122] In addition, an installation part 102 is provided on the outer wall of the spray support 1. The installation part 102 can be snapped into the inner tub of the dishwasher to realize the installation of the spray support 1 on the inner tub.

[0123] The upper surface of the spray arm 2 is provided with mounting holes 4. The spray arm 2 and the spray support 1 are installed by rotating the mounting base 3 through the mounting holes 4. The lower surface of the spray arm 2 is provided with several spray holes 201. When the spray assembly is working, water flows into the spray arm 2 through the water inlet channel 101 of the spray support 1, and then sprays out from the spray holes 201 on the spray arm 2. Under the reaction force of the water flow, the spray arm 2 is pushed to rotate around the spray support 1 to clean tableware, etc.

[0124] This embodiment also provides a dishwasher, including the spray assembly of this embodiment.

[0125] In this dishwasher, the mounting base 3 of the spray assembly is rotated and assembled with the mounting hole 4 through the mounting structure of this embodiment. The assembly can be completed without the need for other redundant parts, which greatly simplifies the assembly structure between the mounting base 3 and the mounting hole 4 and reduces the difficulty of the installation operation. At the same time, it eliminates problems such as loosening and falling off of the spray arm caused by unreliable third-party parts (such as existing limit nuts), improves the strength and reliability of the spray arm structure, and thus ensures the service life of the spray assembly.

[0126] Of course, the dishwasher in this embodiment also has other structural components that are present in existing dishwashers, which will not be described in detail here.

[0127] The process of spray support 1 and spray arm 2 of the dishwasher spray assembly in this embodiment will be described below with reference to the accompanying drawings:

[0128] First, along the installation direction of the spray support 1 and the spray arm 2 ( Figure 1 Using the middle arrow c or arrow c', bring the mounting base 3 and the mounting hole 4 closer together, then tilt the mounting base 3 and the mounting hole 4 relative to each other so that the guide part 5 enters the guide groove 6. Then rotate the mounting base 3 and the mounting hole 4 relative to each other so that the guide part 5 rotates relative to the guide groove 6 until the guide part 5 leaves the guide groove 6 from the exit section outlet 6022. At this time, the first mating part 10 is uppered by the first limiting part 8 in the first direction, and the second mating part 11 is uppered by the second limiting part 9 in the first direction. The inner wall of the mounting hole 4 is also uppered by the outer edge of the first mating part 10 in the second direction, thus completing the assembly.

[0129] The above assembly process is simple and efficient, which helps to improve production efficiency and reduce production costs. Moreover, after the spray support 1 and the spray arm 2 are assembled through the installation structure of this embodiment, the setting strength of the spray arm 2 is enhanced. During operation, the spray arm 2 will not loosen or have a large swing amplitude, thus improving structural reliability and ensuring the operational stability of the spray assembly.

[0130] 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 scope defined by the appended claims.

Claims

1. An installation structure, characterized in that, The system is applied to a spray assembly, which includes a spray support (1) and a spray arm (2). The spray support (1) has a mounting base (3), and the spray arm (2) has a mounting hole (4). The mounting base (3) is rotatably assembled with the mounting hole (4) through the mounting structure. The mounting structure is as follows: A guide structure is provided on the assembly base (3) and the assembly hole (4), and the assembly base (3) is inclined and rotated to dock with the assembly hole (4) through the guide structure; A limiting structure is provided on the assembly base (3) and the assembly hole (4). After the assembly base (3) and the assembly hole (4) are rotated and connected, the assembly base (3) is limited in the first direction by the limiting structure and the assembly hole (4).

2. The installation structure according to claim 1, characterized in that, The guide structure includes a guide part (5) and a guide groove (6) that cooperate with each other. One of the guide part (5) and the guide groove (6) is disposed in the mounting base (3), and the other is disposed in the mounting hole (4). The extension direction of the guide groove (6) is set at an angle relative to the installation direction of the spray support (1) and the spray arm (2).

3. The installation structure according to claim 2, characterized in that, The guide groove (6) includes a connected entry section (601) and an exit section (602). The entry section (601) has an entry section inlet (6011) and an entry section outlet (6012). The exit section (602) has an exit section inlet (6021) and an exit section outlet (6022). In the extension direction of the guide groove (6), the cross-sectional dimension of the entry section (601) gradually decreases from the entry section inlet (6011) to the entry section outlet (6012), and the cross-sectional dimension of the exit section (602) gradually increases from the exit section inlet (6021) to the exit section outlet (6022).

4. The installation structure according to claim 3, characterized in that, The inner wall of the entry section (6011) is rounded.

5. The installation structure according to claim 3, characterized in that, After the guide part (5) is inserted into the guide groove (6), the inner wall of the entry section (601) located on the rear side of the rotation direction of the guide part (5) is inclined from the exit section inlet (6021) toward the inner wall of the opposite side.

6. The installation structure according to claim 3, characterized in that, After the guide part (5) is inserted into the guide groove (6), the inner wall of the exit section outlet (6022) located in front of the rotation direction of the guide part (5) and the lower end face of the guide groove (6) are rounded.

7. The installation structure according to claim 3, characterized in that, After the guide part (5) is inserted into the guide groove (6), the angle between the inner wall of the departure section (602) located on the rear side of the rotation direction of the guide part (5) and the lower end face of the guide groove (6) is α, and the angle α ≥ 90°.

8. The installation structure according to claim 3, characterized in that, The width of the exit section entrance (6021) is B1, the width of the entry section entrance (6011) is B2, and the width of the guide part (5) is A, satisfying B1≤A<B2.

9. The installation structure according to claim 2, characterized in that, The guide portion (5) is disposed on the outer wall of the mounting base (3), and the inner wall of the mounting hole (4) is provided with a protrusion (7) along the circumferential direction. The guide groove (6) is disposed on the protrusion (7).

10. The mounting structure according to any one of claims 2-9, characterized in that, The limiting structure includes a first limiting part (8), a second limiting part (9), a first mating part (10), and a second mating part (11). The first limiting part (8) and the second limiting part (9) are disposed in the assembly hole (4). The first mating part (10) and the second mating part (11) are disposed in the assembly base (3). After the assembly base (3) is rotated and connected with the assembly hole (4), the first mating part (10) is limited by the first limiting part (8) in one orientation of the first direction, and the second mating part (11) is limited by the second limiting part (9) in another orientation of the first direction.

11. The mounting structure according to claim 10, characterized in that, The first mating part (10) and the guide part (5) are located in the same circumferential position of the mounting base (3), and the outer wall of the first mating part (10) protrudes from the guide part (5) in the second direction.

12. The mounting structure according to claim 11, characterized in that, The number of the first mating part (10) and the guide part (5) is even. The guide groove (6) mates with at least one of the guide parts (5). The first mating part (10) and the guide part (5) are alternately arranged circumferentially on the outer wall of the mounting base (3). The guide parts (5) are arranged opposite each other in pairs. The first mating parts (10) are arranged opposite each other in pairs.

13. The mounting structure according to claim 10, characterized in that, The distance between the first limiting part (8) and the second limiting part (9) along the first direction is X1, and the distance between the first mating part (10) and the second mating part (11) along the first direction is X2, satisfying X1≥X2, and X1-X2≤N, N≤1mm.

14. The mounting structure according to claim 10, characterized in that, After the mounting base (3) is rotated and docked with the mounting hole (4), the mounting base (3) is also limited by the limiting structure to the mounting hole (4) in a second direction, the second direction being set at an angle to the first direction.

15. The mounting structure according to claim 14, characterized in that, The limiting structure also includes the outer edge of the first mating part (10). After the mounting base (3) is rotated and docked with the mounting hole (4), the outer edge of the first mating part (10) is limited in the second direction by the inner wall of the mounting hole (4).

16. The mounting structure according to claim 15, characterized in that, The distance between the inner wall of the assembly hole (4) and the second direction is L1, and the distance between the outer edge of the first mating part (10) and the second direction is L2, satisfying L1≥L2, and L1-L2≤N, N≤1mm.

17. A spray assembly, characterized in that, It includes a spray support (1) and a spray arm (2), the spray support (1) having a mounting base (3), the spray arm (2) having a mounting hole (4), and the mounting base (3) being rotatably assembled with the mounting hole (4) by means of the mounting structure as described in any one of claims 1-16.

18. A dishwasher, characterized in that, Includes the spray assembly as described in claim 17.

Images