Spraying arm assembly of dish washing machine

Abstract

The invention discloses a spraying arm assembly of a dish washing machine, which comprises a water supply pipe, a spraying arm and a spraying arm, the front end and the rear end of the auxiliary spraying arm are each provided with a rotating assembly, the rear end of the auxiliary spraying arm is rotationally connected with the water outlet end of the water supply pipe through the rotating assemblies, and a plurality of water spraying openings are formed in the auxiliary spraying arm; the rear end of the front seat is rotatably connected with the front end of the auxiliary spraying arm through the rotating assembly, so that the front seat is communicated with the auxiliary spraying arm; a connecting assembly is arranged at the position of the lower end of the front seat, the upper end of the main spraying arm is rotatably connected with the lower end of the front seat through the connecting assembly so that the main spraying arm can be communicated with the front seat, and a plurality of spraying openings are formed in the main spraying arm. The dish washing machine is simple in structure, the diversity of spraying cleaning can be enriched, and meanwhile the cleaning effect of the dish washing machine is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, and in particular to a spray arm assembly of a dishwasher. Background Art

[0002] With the improvement of living standards, more and more families in the market are equipped with dishwashers. Household dishwashers usually use the flushing effect of spray water columns, combined with auxiliary means such as washing consumables and heating, to achieve the purpose of cleaning contaminants on tableware.

[0003] However, due to the low water pressure in the middle water channel of the dishwasher, the middle spray arm of the dishwasher mostly adopts a single circular spray mode with only a single flushing angle and position. Summary of the invention

[0004] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes a spray arm assembly for a dishwasher, which has a simple structure and can enrich the diversity of spray cleaning, while further improving the cleaning effect of the dishwasher.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A spray arm assembly of a dishwasher, comprising:

[0007] A water supply pipe, wherein the water inlet end of the water supply pipe is connected to an external water supply;

[0008] A secondary spray arm, wherein a rotating assembly is respectively arranged at the front and rear ends of the secondary spray arm, the rear end of the secondary spray arm is rotatably connected to the water outlet end of the water supply pipe through the rotating assembly, and a plurality of water spraying ports are opened on the secondary spray arm;

[0009] A front seat, wherein the rear end of the front seat is rotatably connected to the front end of the auxiliary spray arm through the rotating assembly so that the front seat is connected to the auxiliary spray arm;

[0010] A main spray arm is provided with a connecting assembly at the lower end of the front seat, the upper end of the main spray arm is rotatably connected to the lower end of the front seat through the connecting assembly so that the main spray arm is connected to the front seat, and a plurality of spray ports are opened on the main spray arm.

[0011] In some embodiments, the rotating assembly includes a joint, a ball and a clamp, wherein the joints are respectively arranged on the front and rear ends of the auxiliary spray arm and are rotatably connected to the auxiliary spray arm, the joint is rotatably connected to the clamp through the ball at the end away from the auxiliary spray arm, and the clamp is connected to the water outlet end of the water supply pipe or the front seat buckle at the end away from the joint.

[0012] In some embodiments, a bayonet is provided at the water outlet end of the water supply pipe and the rear end of the front seat respectively, and a fastener is protruded from the end of the clamping head away from the joint, and the fastener and the bayonet are buckled together.

[0013] In some embodiments, internal threads are respectively provided on the front and rear ends of the auxiliary spray arm, and the connector is provided with external threads on an end away from the clamp, and the external threads are matched with the internal threads to thread the connector and the auxiliary spray arm together.

[0014] In some embodiments, a recessed groove is recessed on the outer wall of the joint, and a groove is recessed on the inner wall of the chuck. The groove cooperates with the recessed groove to form a mounting groove, and the ball is arranged in the mounting groove to enable the joint and the chuck to be rotatably connected.

[0015] In some embodiments, the connecting assembly includes a hollow rotating shaft and a connecting seat, wherein the lower end of the front seat passes through the rotating shaft and is connected to the connecting seat, and the lower end of the rotating shaft passes through the connecting seat and is connected to the main spray arm.

[0016] In some embodiments, a clamping edge is provided on the connecting seat, and a clamping groove is recessed at the lower end of the front seat, and the clamping edge and the clamping groove are matched and connected to make the front seat and the connecting seat buckle together.

[0017] In some embodiments, a through hole is opened in the middle position of the connecting seat, a clamping platform is provided at the edge position of the upper end of the through hole, a flange is protruded at the upper end position of the rotating shaft, the rotating shaft is sleeved in the through hole, and the flange abuts against the clamping platform.

[0018] In some embodiments, a water outlet is provided on the main spray arm, a convex wing is provided at the edge of the water outlet, an opening is provided on the convex wing, a buckle groove is provided on the bottom wall of the convex wing, a buckle edge is provided at the lower end of the rotating shaft, and the buckle edge passes through the opening and is clamped in the buckle groove.

[0019] In some embodiments, it also includes a support and a rear seat, wherein the rear end of the support is connected to the water outlet end of the water supply pipe, and the lower end thereof is connected to the upper end of the rear seat, and the front end of the rear seat is connected to the rear end of the auxiliary spray arm through the rotating assembly.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] 1. The spray arm assembly of the dishwasher of the present invention has a simple structure, which can enrich the diversity of spray cleaning and further improve the cleaning effect of the dishwasher. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 is a structural schematic diagram of a portion of the structure of a dishwasher in an embodiment of the present invention;

[0024] Figure 2 is an exploded schematic diagram of a spray arm assembly in an embodiment of the present invention;

[0025] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A;

[0026] Figure 4 yes Figure 2 A partial enlarged schematic diagram of part B;

[0027] Figure 5 is a schematic structural diagram of an auxiliary spray arm in an embodiment of the present invention;

[0028] Figure 6 is a cross-sectional view of a rotating assembly in an embodiment of the present invention;

[0029] Figure 7 Schematic diagram of the exploded view of the rotating assembly in the embodiment of the present invention. DETAILED DESCRIPTION

[0030] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in combination with the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, but not all of the embodiments. The components of the embodiment of the present invention can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the technical solution claimed for protection of the present invention.

[0032] Example:

[0033] like Figures 1 to 7 As shown, this embodiment provides a spray arm assembly of a dishwasher, comprising:

[0034] A water supply pipe, the water inlet end of which is connected to an external water supply;

[0035] A secondary spray arm 2, a rotating assembly 3 is respectively provided at the front and rear ends of the secondary spray arm 2, the rear end of the secondary spray arm 2 is rotatably connected to the water outlet end of the water supply pipe through the rotating assembly 3, and a plurality of water spray ports 21 are opened on the secondary spray arm 2;

[0036] The front seat 4, the rear end of the front seat 4 is rotatably connected to the front end of the auxiliary spray arm 2 through the rotating assembly 3 so that the front seat 4 is connected to the auxiliary spray arm 2;

[0037] The main spray arm 5 is provided with a connecting assembly 6 at the lower end of the front seat 4. The upper end of the main spray arm 5 is rotatably connected to the lower end of the front seat 4 through the connecting assembly 6 so that the main spray arm 5 is connected to the front seat 4, and a plurality of spray ports 51 are opened on the main spray arm 5.

[0038] In this embodiment, the water inlet end of the water supply pipe is connected to the external water supply, and the water outlet end thereof is rotatably connected to the rear end of the auxiliary spray arm 2 through the rotating component 3, so that the rear end of the auxiliary spray arm 2 is connected to the water supply pipe, and the front end of the auxiliary spray arm 2 is rotatably connected to the rear end of the front seat 4 through the rotating component 3, so that the front seat 4 is connected to the auxiliary spray arm 2, and the lower end of the front seat 4 is rotatably connected to the upper end of the main spray arm 5 through the connecting component 6, so that the main spray arm 5 is connected to the front seat 4. When the external water supply passes through the water supply pipe and the auxiliary spray arm 2 in turn, a part of the washing water in the water supply pipe is sprayed out through the water spray port 21, and at the same time drives the auxiliary spray arm 2 to rotate synchronously around the transverse axis. In addition, the water supply The remaining washing water in the pipe is then sprayed out through the front seat 4, the main spray arm 5, and the spray port 51 in sequence, and at the same time, the main spray arm 5 is driven to rotate synchronously around the vertical axis. Since the rotation axes 61 of the main spray arm 5 and the auxiliary spray arm 2 are vertically arranged, the main spray arm 5 and the auxiliary spray arm 2 can rotate freely around their respective rotation axes 61, so that while washing the tableware in the upper bowl basket, the tableware in the lower bowl basket can also be washed to a certain extent. At the same time, the amount of water in the entire waterway can be reduced, which is helpful to reduce energy consumption and water consumption, so as to achieve the effect of energy saving and emission reduction. Its structure is simple, which can enrich the diversity of spray cleaning and further improve the cleaning effect of the dishwasher.

[0039] Furthermore, the rotating assembly 3 includes a joint 31, a ball 32 and a clamp 33, wherein the joint 31 is respectively arranged on the front and rear ends of the auxiliary spray arm 2 and is rotatably connected to the auxiliary spray arm 2, the joint 31 is rotatably connected to the clamp 33 through the ball 32 at the end away from the auxiliary spray arm 2, and the clamp 33 is snap-connected to the water outlet end of the water supply pipe or the front seat 4 at the end away from the joint 31.

[0040] Preferably, a bayonet 34 is provided at the water outlet end of the water supply pipe and the rear end of the front seat 4 , respectively. A fastener 35 is protruded from the end of the clamp head 33 away from the joint 31 , and the fastener 35 and the bayonet 34 are buckled together.

[0041] Specifically, internal threads 22 are respectively provided on the front and rear ends of the auxiliary spray arm 2, and an external thread 36 is provided on the end of the joint 31 away from the clamp 33. The external thread 36 is threadably connected with the internal thread 22 so that the joint 31 and the auxiliary spray arm 2 are threadedly connected together.

[0042] Furthermore, a recessed groove 37 is formed on the outer wall of the joint 31, and a groove 38 is formed on the inner wall of the clamp 33. The groove 38 cooperates with the recessed groove 37 to form a mounting groove. The ball 32 is arranged in the mounting groove so that the joint 31 and the clamp 33 can be rotatably connected.

[0043] Specifically, it also includes a support 7 and a rear seat 8, wherein the rear end of the support 7 is connected to the water outlet end of the water supply pipe, and its lower end is connected to the upper end of the rear seat 8, and the front end of the rear seat 8 is connected to the rear end of the auxiliary spray arm 2 through the rotating component 3.

[0044] In this embodiment, internal threads 22 are respectively provided on the front and rear ends of the auxiliary spray arm 2, and an external thread 36 is provided on the end of the joint 31 away from the clamping head 33. The external thread 36 is threadedly matched with the internal thread 22 to make the joint 31 and the auxiliary spray arm 2 threadedly connected together, so that a joint 31 is respectively connected to the front and rear ends of the auxiliary spray arm 2. More preferably, since the sizes of the front and rear ends of the auxiliary spray arm 2 are consistent, there is no difference between the front and back during assembly, thereby effectively improving the efficiency of production and assembly. Next, the joint 31 is provided with a recessed groove 37 along its circumference direction on the outer wall away from the end of the auxiliary spray arm 2, and the clamping head 33 is provided with a recessed groove 41 on the inner wall close to the end of the joint 31. The recessed groove 41 cooperates with the recessed groove 37 to form a mounting groove, and the ball 32 is arranged in the mounting groove so that the joint 31 and the clamping head 33 can be rotatably connected, so that the friction force during rotation is small. Secondly, the clamping head 33 is provided with a plurality of fasteners 35 at intervals along its circumference direction at the end away from the joint 31, and a plurality of bayonet holes 34 are respectively opened at the front end position of the rear seat 8 and the rear end position of the front seat 4. The fasteners 35 and the bayonet holes 34 are buckled together, so that the front end of the rear seat 8 and the clamping head 33 located at the rear end of the auxiliary spray arm 2 are buckled together, and at the same time, the rear end of the front seat 4 and the clamping head 33 located at the front end of the auxiliary spray arm 2 are buckled together, so that the auxiliary spray arm 2 can achieve rotational movement around the transverse axis. In addition, in order to further improve the washing effect, mounting surfaces are symmetrically arranged on the left and right sides of the auxiliary spray arm 2 along the water flow direction of the auxiliary spray arm 2, and a plurality of water spray outlets 21 are spaced apart on the mounting surfaces, so that the water spray outlets 21 on both sides are centrally symmetrically arranged, and the spray angle of each water spray outlet 21 is 180°.

[0045] Furthermore, the connecting assembly 6 includes a hollow rotating shaft 61 and a connecting seat 62 , wherein the lower end of the front seat 4 passes through the rotating shaft 61 and is connected to the connecting seat 62 , and the lower end of the rotating shaft 61 passes through the connecting seat 62 and is connected to the main spray arm 5 .

[0046] Preferably, a clamping edge 63 is provided on the connecting seat 62 , and a clamping groove 41 is recessed at the lower end of the front seat 4 . The clamping edge 63 is matched and connected with the clamping groove 41 so that the front seat 4 and the connecting seat 62 are buckled together.

[0047] Specifically, a through hole 67 is opened in the middle position of the connecting seat 62, a clamping platform 64 is arranged at the edge position of the upper end of the through hole 67, a flange 65 is protruded at the upper end position of the rotating shaft 61, the rotating shaft 61 is sleeved in the through hole 67, and the flange 65 abuts against the clamping platform 64.

[0048] In particular, a water outlet 52 is provided on the main spray arm 5, a convex wing 53 is protruding at the edge of the water outlet 52, an opening 54 is provided on the convex wing 53, a buckle groove 55 is provided on the bottom wall of the convex wing 53, and a buckle edge 66 is protruding at the lower end of the rotating shaft 61, and the buckle edge 66 passes through the opening 54 and is clamped in the buckle groove 55.

[0049] In this embodiment, since a through hole 67 is provided at the middle position of the connection seat 62, a clamping platform 64 is provided at the edge position of the upper end of the through hole 67 from the center of the through hole 67 to the outer position thereof, and a flange 65 is provided at the upper end position of the rotating shaft 61 to protrude outward, after the rotating shaft 61 passes through the through hole 67, until the bottom wall of the flange 65 abuts against the top wall of the clamping platform 64, the rotating shaft 61 is sleeved in the through hole 67, and the rotating shaft 61 and the connection seat 62 are rotatably connected together. Preferably, a gasket 68 is provided at the middle position between the bottom wall of the flange 65 and the top wall of the clamping platform 64, so as to effectively improve the sealing between the connection seat 62 and the rotating shaft 61.

[0050] Secondly, a clamping edge 63 is protruded on the connecting seat 62 from the outside of the connecting seat 62 toward the middle position thereof, and a clamping slot 41 is recessed at the lower end of the front seat 4. One end of the clamping slot 41 is open, and a limiting portion is protruded upward on the bottom wall of the clamping slot 41 close to the open end thereof, and the clamping edge 63 enters the clamping slot 41 from the direction of the open end of the clamping slot 41. In this way, the clamping edge 63 can be clamped in the clamping slot 41 through the limiting effect of the limiting portion, so that the front seat 4 and the connecting seat 62 are buckled together, and further, the clamping edge 63 can be prevented from being separated from the clamping slot 41 to improve the stability of the connection between the connecting seat 62 and the front seat 4.

[0051] In addition, a water outlet 52 is provided at the middle position of the top wall of the main spray arm 5, a convex wing 53 is protruded from the edge position of the water outlet 52 toward the middle position of the water outlet 52, a plurality of openings 54 are provided on the convex wing 53 at intervals along the circumference direction, a buckle groove 55 is provided on the bottom wall of the convex wing 53, and a buckle edge 66 is protruded outward at the lower end position of the rotating shaft 61. After the buckle edge 66 passes through the opening 54 from top to bottom, the main spray arm 5 is driven by external force to rotate so that the buckle edge 66 is clamped in the buckle groove 55, so that the rotating shaft 61 and the main spray arm 5 are buckled together. Since the rotating shaft 61 and the connecting seat 62 are rotatably connected together, the washing water is sprayed outward through the water supply pipe, the auxiliary spray arm 2, the front seat 4, the rotating shaft 61, the main spray arm 5, and the injection port 51 in sequence, and at the same time, the main spray arm 5 is driven to rotate synchronously around the vertical axis.

[0052] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A spray arm assembly for a dishwasher, characterized in that: include: A water supply pipe, wherein the water inlet end of the water supply pipe is connected to an external water supply; A secondary spray arm (2), wherein a rotating assembly (3) is respectively arranged at the front and rear ends of the secondary spray arm (2), the rear end of the secondary spray arm (2) is rotatably connected to the water outlet end of the water supply pipe through the rotating assembly (3), and a plurality of water spray outlets (21) are opened on the secondary spray arm (2); A front seat (4), wherein the rear end of the front seat (4) is rotatably connected to the front end of the auxiliary spray arm (2) through the rotating assembly (3) so that the front seat (4) is connected to the auxiliary spray arm (2); A main spray arm (5) is provided with a connecting assembly (6) at the lower end of the front seat (4); the upper end of the main spray arm (5) is rotatably connected to the lower end of the front seat (4) via the connecting assembly (6) so that the main spray arm (5) is connected to the front seat (4); and a plurality of spray ports (51) are provided on the main spray arm (5).

2. A spray arm assembly for a dishwasher according to claim 1, characterized in that: The rotating assembly (3) comprises a joint (31), a ball (32) and a clamp (33), wherein the joint (31) is respectively arranged on the front and rear ends of the auxiliary spray arm (2) and is rotatably connected to the auxiliary spray arm (2); the joint (31) is rotatably connected to the clamp (33) through the ball (32) at an end away from the auxiliary spray arm (2); and the clamp (33) is buckled and connected to the water outlet end of the water supply pipe or the front seat (4) at an end away from the joint (31).

3. A spray arm assembly for a dishwasher according to claim 2, characterized in that: A bayonet (34) is provided at the water outlet end of the water supply pipe and the rear end of the front seat (4), respectively; a fastener (35) is protruded from the end of the clamp head (33) away from the joint (31); the fastener (35) and the bayonet (34) are buckled together.

4. A spray arm assembly for a dishwasher according to claim 2, characterized in that: Internal threads (22) are respectively provided at the front and rear ends of the auxiliary spray arm (2), and an external thread (36) is provided at the end of the joint (31) away from the clamp (33). The external thread (36) is threadably connected with the internal thread (22) so that the joint (31) and the auxiliary spray arm (2) are threadably connected together.

5. The spray arm assembly of a dishwasher according to claim 2, characterized in that: A recessed groove (37) is recessed on the outer side wall of the joint (31), and a groove (38) is recessed on the inner side wall of the clamp (33). The groove (38) is matched and connected with the recessed groove (37) to form a mounting groove. The ball (32) is arranged in the mounting groove so that the joint (31) and the clamp (33) can be rotatably connected.

6. The spray arm assembly of a dishwasher according to claim 1, characterized in that: The connecting assembly (6) comprises a hollow rotating shaft (61) and a connecting seat (62), wherein the lower end of the front seat (4) passes through the rotating shaft (61) and is connected to the connecting seat (62), and the lower end of the rotating shaft (61) passes through the connecting seat (62) and is connected to the main spray arm (5).

7. A spray arm assembly for a dishwasher according to claim 6, characterized in that: A clamping edge (63) is provided on the connecting seat (62), and a clamping groove (41) is recessed at the lower end of the front seat (4). The clamping edge (63) is matched and connected with the clamping groove (41) so that the front seat (4) and the connecting seat (62) are clamped together.

8. The spray arm assembly of a dishwasher according to claim 6, characterized in that: A through hole (67) is provided at the middle position of the connecting seat (62), a clamping platform (64) is provided at the edge position of the upper end of the through hole (67), a flange (65) is provided at the upper end position of the rotating shaft (61), the rotating shaft (61) is sleeved in the through hole (67), and the flange (65) abuts against the clamping platform (64).

9. The spray arm assembly of a dishwasher according to claim 6, characterized in that: A water passage (52) is provided on the main spray arm (5), a convex wing (53) is provided at the edge of the water passage (52), an opening (54) is provided on the convex wing (53), a buckle groove (55) is provided on the bottom wall of the convex wing (53), a buckle edge (66) is provided at the lower end of the rotating shaft (61), and the buckle edge (66) passes through the opening (54) and is clamped in the buckle groove (55).

10. A spray arm assembly for a dishwasher according to any one of claims 1 to 9, characterized in that: It also includes a support (7) and a rear seat (8), wherein the rear end of the support (7) is connected to the water outlet end of the water supply pipe, and the lower end is connected to the upper end of the rear seat (8), and the front end of the rear seat (8) is connected to the rear end of the auxiliary spray arm (2) through the rotating component (3).

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