Spraying arm mechanism and dish washing machine thereof

Abstract

The utility model discloses a gushing arm mechanism, which comprises a main gushing arm, a spraying arm, a water inlet, a spraying arm, a water outlet and a spraying arm, wherein the top or bottom of the main gushing arm is provided with a water inlet; the two auxiliary spraying arms are arranged above or below the main spraying arm and located on the left side and the right side of the main spraying arm respectively. The main spraying arm is connected with the two auxiliary spraying arms through the transmission assembly, and when the main spraying arm rotates, the two auxiliary spraying arms can be driven by the transmission assembly to swing back and forth around the central axis of the main spraying arm. According to the spraying arm mechanism, the flushing angle is increased, the spraying mode is enriched, and the cleaning effect of the dish washing machine is effectively improved. The utility model further discloses the dish washing machine.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, and in particular to a spray arm mechanism and the dishwasher thereof. Background Technology

[0002] Household dishwashers typically clean dishes by using a spray of water, combined with detergents and heating. However, due to the low water pressure in the middle water channel, the spray arms in most dishwashers use a single circular spray pattern, resulting in only a single rinsing angle and position. This leaves many hard-to-reach areas unwashed, such as the inner walls of deep containers. Summary of the Invention

[0003] This utility model aims to at least partially solve one of the problems existing in the prior art. To this end, this utility model proposes a spray arm mechanism that increases the rinsing angle, enriches the spraying methods, and effectively improves the cleaning effect of the dishwasher. This utility model also proposes a dishwasher.

[0004] The spray arm mechanism described above is implemented through the following technical solution:

[0005] A spray arm mechanism includes: a main spray arm with a water inlet at the top or bottom; two auxiliary spray arms disposed above or below the main spray arm and located on the left and right sides of the main spray arm respectively; and a transmission assembly, wherein the main spray arm is connected to the two auxiliary spray arms respectively through the transmission assembly, and the main spray arm can drive the two auxiliary spray arms to swing back and forth around its central axis through the transmission assembly when rotating.

[0006] In some embodiments, the transmission assembly includes: a connecting plate movably disposed between the main spray arm and the two auxiliary spray arms, with a central through hole in the middle of the connecting plate, and the opposite ends of the connecting plate respectively engaging with the two auxiliary spray arms; a gear set disposed between the main spray arm and the connecting plate, and having a mounting portion protruding towards the connecting plate, the mounting portion vertically passing through the central through hole, and the main spray arm and the connecting plate being connected by transmission via the gear set.

[0007] In some embodiments, the connecting plate has a first limiting groove at the position corresponding to the gear set, and the gear set has a protruding pushing part facing the connecting plate, the pushing part being movably inserted into the first limiting groove.

[0008] In some embodiments, second limiting grooves are respectively provided at the left and right ends of the connecting plate, and the auxiliary spray arm is provided with a buckling part extending toward the connecting plate. The buckling part is movably vertically inserted through the second limiting groove and engages with the connecting plate.

[0009] In some embodiments, the gear set has a positioning hole, and the main spray arm has a protrusion extending toward the gear set, the protrusion being inserted into the positioning hole.

[0010] In some embodiments, the gear set includes a central gear and planetary gears. The central gear is disposed between the main spray arm and the connecting plate and has the mounting portion protruding therefrom. The planetary gears mesh with the central gear, and the main spray arm is connected to the connecting plate through the planetary gears.

[0011] In some embodiments, a positioning hole is provided at the center of the planetary gear for engaging with the main spray arm, and a pushing part extending toward the connecting plate is provided at the eccentric part of the planetary gear for sliding connection with the connecting plate.

[0012] In some embodiments, the auxiliary spray arm includes a first spray arm body and a rotating component, wherein the first spray arm body is connected to the connecting plate via the rotating component.

[0013] In some embodiments, the system also includes a water pipe assembly and a rotating shaft assembly. The water pipe assembly includes a main water pipe and two connecting water pipes. The outlet end of the main water pipe is connected to the inlet of the main spray arm through the rotating shaft assembly. The outlet ends of the two connecting water pipes are respectively connected to the two auxiliary spray arms. The transmission assembly is connected in cooperation with the rotating shaft assembly.

[0014] In some embodiments, the rotating shaft assembly includes a spray arm support and a spray arm rotating shaft. One end of the spray arm rotating shaft is inserted into the water inlet and rotatably connected to the main spray arm, and the other end is connected to the water outlet of the main water pipe through the spray arm support. The transmission assembly is sleeved on the outside of the spray arm rotating shaft and is connected and fixed to the spray arm support.

[0015] The dishwasher described above is achieved through the following technical solution:

[0016] A dishwasher includes a dish rack assembly and a spray arm mechanism as described above, the spray arm mechanism being detachably mounted to the bottom of the dish rack assembly.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] 1. The spray arm mechanism of this utility model sets two auxiliary spray arms on the left and right sides of the top or bottom of the main spray arm. The main spray arm is connected to the two auxiliary spray arms through a transmission component. This allows the main spray arm to reliably drive the two auxiliary spray arms to swing back and forth when it rotates, so that the spray water column formed by the main spray arm and the two auxiliary spray arms intersects, enriching the spraying mode, increasing the rinsing angle, and effectively improving the cleaning effect of the dishwasher.

[0019] 2. The spray arm mechanism of this utility model, by setting the gear set on the main spray arm and connecting the two auxiliary spray arms through the same connecting plate, realizes the reliable linkage of the main spray arm with the two auxiliary spray arms, while simplifying the structure of the transmission components and reducing costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the spray arm mechanism in an embodiment of this utility model;

[0021] Figure 2 This is an exploded view of the spray arm mechanism in an embodiment of this utility model;

[0022] Figure 3 This is a cross-sectional view of the spray arm mechanism in an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the rotating component in an embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram of the connecting plate in an embodiment of this utility model;

[0025] Figure 6 This is an exploded view of the gear assembly in an embodiment of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the spray arm mechanism installed at the bottom of the bowl assembly in an embodiment of this utility model.

[0027] In the diagram: 1-Main spray arm, 11-Water inlet, 12-Protrusion; 2-Secondary spray arm, 21-First spray arm body, 22-Second spray arm body, 23-Rotating component, 231-Snap-on part, 232-Annular groove; 31-Connecting plate, 311-Central through hole, 312-First limiting groove, 313-Second limiting groove, 314-Void hole; 32-Central gear, 321-Mounting part, 322-Flange edge; 33-Planetary gear, 331-Pushing part, 332-Positioning hole; 41-Main water pipe, 411-Water outlet, 412-Mounting buckle, 42-Connecting water pipe, 421-Water outlet connector; 51-Spray arm support, 52-Spray arm pivot; 6-Basket assembly. Detailed Implementation

[0028] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0029] Example 1

[0030] refer to Figure 1-3 This embodiment provides a spray arm mechanism, including a main spray arm 1, two auxiliary spray arms 2, and a transmission assembly 3. A water inlet 11 is provided at the center of the top of the main spray arm 1. Alternatively, the water inlet 11 can be located at the center of the bottom of the main spray arm 1. Multiple first spray holes (not shown in the figure) are spaced apart on the main spray arm 1. The first spray holes are connected to the water inlet 11 through a water flow cavity inside the main spray arm 1. The main spray arm 1 can rotate horizontally around the central axis A1 of the water inlet 11 under the drive of water flow (see...). Figure 3 ).

[0031] Two auxiliary spray arms 2 are positioned above the main spray arm 1. Alternatively, they can be positioned below the main spray arm 1. The two auxiliary spray arms 2 are located on the left and right sides of the main spray arm 1, respectively, with a gap between them. The auxiliary spray arms 2 and the main spray arm 1 are not directly connected. In this embodiment, the auxiliary spray arm 2 is a flute-shaped spray arm. A water inlet (not shown in the figure) is provided at the rear end of the auxiliary spray arm 2. Multiple second spray holes (not shown in the figure) are spaced apart on the peripheral wall of the auxiliary spray arm 2. The second spray holes are connected to the water inlet through an internal cavity of the auxiliary spray arm 2. The auxiliary spray arm 2 can swing back and forth around its central axis A2 (see...). Figure 3 ), wherein the central axis A2 of the inlet 11 is perpendicular to the central axis A1 of the auxiliary spray arm 2.

[0032] The transmission assembly 3 is located between the main spray arm 1 and the two auxiliary spray arms 2. The main spray arm 1 is connected to the two auxiliary spray arms 2 respectively through the transmission assembly 3. When the main spray arm 1 rotates, it can drive the two auxiliary spray arms 2 to swing back and forth around its central axis through the transmission assembly 3. Preferably, when the main spray arm 1 rotates one revolution, the auxiliary spray arms 2 swing back and forth twice, so that the spray water columns formed by the main spray arm 1 and the two auxiliary spray arms 2 intersect, which enriches the spraying mode, increases the rinsing angle, and effectively improves the cleaning effect of the dishwasher.

[0033] Specifically, the structure of the auxiliary spray arm 2 includes, but is not limited to, any of the following:

[0034] The first type, reference Figure 1-4The auxiliary spray arm 2 includes a first spray arm body 21, a second spray arm body 22, and a rotating component 23. The first spray arm body 21 is connected and communicates with the second spray arm body 22 through the rotating component 23. A water inlet is provided at the end of the first spray arm body 21 away from the rotating component 23. Multiple second spray holes are provided on the side walls of both the first spray arm body 21 and the second spray arm body 22. The rotating component 23 is connected to the main spray arm 1 via a transmission assembly.

[0035] The second type includes a first spray arm 21 and a rotating component 23. The first spray arm 21 is connected to the connecting plate 31 through the rotating component 23. A water inlet is provided at the end of the first spray arm 21 away from the rotating component 23. Multiple second spray holes are provided on the side wall of the first spray arm 21.

[0036] In this embodiment, a latching portion 231 extending toward the transmission assembly is provided on the outer wall of the rotating member 23. The latching portion 231 is configured to engage with the connecting plate 31 of the transmission assembly, and the latching portion 231 can slide relative to the connecting plate 31 of the transmission assembly, thereby enabling the transmission assembly to reliably drive the auxiliary spray arm 2 to swing back and forth around the central axis A2. Specifically, an annular groove 232 is recessed on the outer peripheral wall of the rotating member 23, and the fixed end of the latching portion 231 is disposed in the annular groove 232 and integrally formed with the rotating member 23.

[0037] refer to Figure 1-6 The transmission assembly includes a connecting plate 31 and a gear set (not shown in the figure). The connecting plate 31 is movably disposed between the main spray arm 1 and the two auxiliary spray arms 2, and a central through hole 311 is formed at the center of the connecting plate 31. The gear set is disposed between the main spray arm 1 and the connecting plate 31, and it has a mounting part 321 extending toward the connecting plate 31. The mounting part 321 is vertically inserted through the central through hole 311. The main spray arm 1 is connected to the connecting plate 31 via the gear set. The two opposite ends of the connecting plate 31 are respectively connected to the two auxiliary spray arms 2, thereby ensuring that the main spray arm 1 can reliably link the two auxiliary spray arms 2 through the same gear set and the same connecting plate 31, which helps to simplify the structure of the transmission assembly and reduce costs.

[0038] In this embodiment, the connecting plate 31 is arranged with a larger middle section and smaller ends. A first limiting groove 312 is formed at the position of the gear set on the connecting plate 31. A pushing part 331 protrudes from the gear set at the position of the first limiting groove 312 and faces the connecting plate 31. The pushing part 331 is movably inserted into the first limiting groove 312. In this way, by cooperating with the first limiting groove 312, the gear set rotates while the connecting plate 31 moves reliably.

[0039] Second limiting grooves 313 are respectively provided at the left and right ends of the connecting plate 31. The auxiliary spray arm 2 is provided with a buckling part 231 extending toward the connecting plate 31 at the position corresponding to the second limiting groove. The buckling part 231 is movably vertically inserted through the second limiting groove 313 and engages with the connecting plate 31. This facilitates the engagement of the buckling part 231 with the second limiting groove 313, so that while the connecting plate 31 moves, the auxiliary spray arm 2 can be reliably driven to swing back and forth around the central axis A2.

[0040] refer to Figure 5 Clearance holes 314 are provided at the left and right ends of the connecting plate 31. The two clearance holes 314 are symmetrically arranged on the left and right sides of the central through hole 311. The clearance holes 314 are arranged with one end smaller and the other end larger near the end of the connecting plate 31, which helps to reduce the weight of the connecting plate 31 and reduce the material cost of the connecting plate 31.

[0041] refer to Figure 1-5 In this embodiment, the gear set has a positioning hole 332. The main spray arm 1 has a protrusion 12 extending toward the gear set at the position corresponding to the positioning hole 332. The protrusion 12 is inserted into the positioning hole 332, so that the protrusion 12 can cooperate with the positioning hole 332 to realize that the main spray arm 1 rotates while reliably driving the gear set to rotate, thereby enabling the gear set to link the two auxiliary spray arms 2 through the connecting plate 31.

[0042] The gear set includes a central gear 32 and a planetary gear 33. The central gear 32 is located between the main spray arm 1 and the connecting plate 31, and is situated around the water inlet 11 of the main spray arm. An integrally formed mounting portion 321 extending towards the connecting plate 31 is formed on the central gear 32, and this mounting portion 321 vertically passes through the central through hole 311 of the connecting plate 31. The planetary gear 33 is located between the main spray arm 1 and the connecting plate 31 and meshes with the central gear 32. The main spray arm 1 is connected to the connecting plate 31 via the planetary gear 33, thereby enabling the two auxiliary spray arms 2 to swing synchronously through the engagement of the central gear 32, the planetary gear 33, and the connecting plate 31. Preferably, the gear ratio of the central gear 32 to the planetary gear 33 is 2:1, so that for every one rotation of the main spray arm 1, the auxiliary spray arm 2 swings back and forth twice. Alternatively, the gear ratio of the central gear 32 to the planetary gear 33 can be designed to be 4:1. This facilitates control of the swing frequency of the two auxiliary spray arms 2 by adjusting the gear ratio of the gear set.

[0043] refer to Figure 2-5On the two opposite outer sides of the mounting portion 321 of the central gear 32, there are outwardly extending flange edges 322, which are used to connect and fix with the spray arm support 51 in the rotating shaft assembly. A positioning hole 332 is opened at the center of the planetary gear 33, which is used to engage with the protrusion 12 of the main spray arm 1. A pushing portion 331 extending toward the connecting plate 31 is protruding at the eccentric part of the planetary gear 33, which is used to slide with the first limiting groove 312 of the connecting plate 31.

[0044] refer to Figure 1-3 Furthermore, the spray arm mechanism also includes a water pipe assembly and a rotating shaft assembly. The water pipe assembly includes a main water pipe 41 and two connecting water pipes 42. The outlet end of the main water pipe 41 is connected to the inlet 11 of the main spray arm 1 through the rotating shaft assembly, thereby supplying water to the main spray arm 1. The outlet ends of the two connecting water pipes 42 are respectively connected to two auxiliary spray arms 2. The transmission assembly is connected to the rotating shaft assembly to supply water to the two auxiliary spray arms.

[0045] In this embodiment, two branch inlets 411 are respectively provided on opposite outer sides of the inlet end of the main water pipe 41. The two branch inlets 411 are respectively connected to the inlet ends of the two connecting water pipes 42, which facilitates water supply to the two connecting water pipes 42 through the same main water pipe 41 and simplifies the water circuit structure. In addition, multiple mounting buckles 412 are provided on the main water pipe 41 at intervals. The mounting buckles 412 are used to snap together with the dish rack assembly 7 of the dishwasher. A water outlet connector 421 is provided at the outlet end of the connecting water pipe 42. The water outlet connector 421 is inserted into the water inlet of the auxiliary spray arm 2, and the auxiliary spray arm 2 can swing back and forth around the water outlet connector 421.

[0046] The rotating shaft assembly includes a spray arm support 51 and a spray arm rotating shaft 52. One end of the spray arm rotating shaft 52 is inserted into the water inlet 11 and rotatably connected to the main spray arm 1, while the other end is connected to the water outlet of the main water pipe 41 through the spray arm support 51. The central gear 32 of the transmission assembly is sleeved on the outside of the spray arm rotating shaft 52 and is connected and fixed to the spray arm support 51.

[0047] Example 2

[0048] refer to Figure 7 This embodiment provides a dishwasher, including a dish rack assembly 6 and a spray arm mechanism as described in Embodiment 1. The spray arm mechanism is detachably installed at the bottom of the dish rack assembly 6. Specifically, the main water pipe 41 is detachably connected to the dish rack assembly 6, and the auxiliary spray arms 2 are detachably connected to the dish rack assembly 6 via a connector (not shown in the figure). This allows the water pipe and the second spray arm to be detachably connected to the bottom of the dish rack assembly 6. With the combined action of the main spray arm 1 and the two auxiliary spray arms 2, the dishes inside the dish rack assembly 6 are rinsed, effectively improving the cleaning effect of the dishwasher.

[0049] The descriptions provided are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A spray arm mechanism, characterized by, The utility model relates to a kind of water spraying device, including: Main spray arm (1), water inlet (11) is opened in the top or bottom of the main spray arm (1); Two auxiliary spray arms (2) are arranged above or below the main spray arm (1), and are respectively located on the left and right sides of the main spray arm (1); Transmission assembly (3), the main spray arm (1) is connected with two auxiliary spray arms (2) respectively by the transmission assembly (3), and the main spray arm (1) can drive two auxiliary spray arms (2) to swing back and forth around the central axis when rotating by the transmission assembly (3).

2. A spray arm mechanism according to claim 1, wherein The transmission assembly includes: Connecting plate (31) is movably arranged between the main spray arm (1) and two auxiliary spray arms (2), and a central through hole (311) is opened in the middle of the connecting plate (31), and the opposite ends of the connecting plate (31) are connected with two auxiliary spray arms (2) respectively; Gear set is arranged between the main spray arm (1) and the connecting plate (31), and the installation part (321) extending towards the connecting plate (31) is protruded, the installation part (321) is vertically arranged in the central through hole (311), and the main spray arm (1) and the connecting plate (31) are connected by the gear set.

3. A spray arm mechanism according to claim 2, wherein The connecting plate (31) is opened at the position corresponding to the gear set First limiting groove (312), the gear set is protruded towards the connecting plate (31) Pushing part (331), the pushing part (331) is movably inserted into the first limiting groove (312).

4. A jet arm mechanism according to claim 2 or 3, wherein Second limiting groove (313) is opened in the left and right ends of the connecting plate (31), the auxiliary spray arm (2) is protruded towards the connecting plate (31) Buckling part (231), the buckling part (231) is movably vertically arranged in the second limiting groove (313) and is matched with the connecting plate (31) Clamping.

5. A spray arm mechanism according to claim 2, wherein The gear set is opened A positioning hole (332), the main spray arm (1) is protruded towards the gear set Protruding part (12), the protruding part (12) is inserted into the positioning hole (332).

6. A spray arm mechanism according to claim 2 or 3 or 5, wherein, The gear set includes sun gear (32) and planetary gear (33), the sun gear (32) is arranged between the main spray arm (1) and the connecting plate (31), and the installation part (321) is protruded, the planetary gear (33) is engaged with the sun gear (32), and the main spray arm (1) is connected with the connecting plate (31) by the planetary gear (33).

7. A jet arm mechanism according to claim 6, wherein A positioning hole (332) is opened at the central position of the planetary gear (33), and the positioning hole (332) is used for matched insertion with the main spray arm (1), and the pushing part (331) extending towards the connecting plate (31) is protruded at the eccentric position of the planetary gear (33), and the pushing part (331) is used for sliding connection with the connecting plate (31).

8. A jet arm mechanism according to claim 2 or 3, wherein The auxiliary spray arm includes first spray arm body (21) and rotating member (23), and the first spray arm body (21) is connected with the connecting plate (31) by the rotating member (23).

9. A spray arm mechanism according to any one of claims 1 to 3, wherein The water pipe assembly comprises a main water pipe (41) and two connecting water pipes (42), the water outlet end of the main water pipe (41) is connected with the water inlet (11) of the main spray arm (1) through the rotating shaft assembly, and the water outlet ends of the two connecting water pipes (42) are respectively connected with the two auxiliary spray arms (2); and the transmission assembly is connected with the rotating shaft assembly.

10. A spray arm mechanism according to claim 9, wherein The rotating shaft assembly comprises a spray arm support (51) and a spray arm rotating shaft (52), one end of the spray arm rotating shaft (52) is inserted into the water inlet (11) and is rotationally connected with the main spray arm (1), and the other end is connected with the water outlet end of the main water pipe (41) through the spray arm support (51); and the transmission assembly is sleeved outside the spray arm rotating shaft (52) and is fixedly connected with the spray arm support (51).

11. A dishwasher, characterized in that The application comprises a bowl basket assembly (6) and a spray arm mechanism as claimed in any one of claims 1-10, which is detachably installed at the bottom of the bowl basket assembly (6).

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