Spraying arm structure of dish washing machine

Abstract

The utility model relates to the technical field of dish-washing machines, in particular to a spraying arm structure of a dish-washing machine, which comprises a connecting arm, a sprayer and a sprayer nut, a connecting part is arranged on the connecting arm, the sprayer nut is rotatably connected to the connecting part, and a connecting pipe is arranged at the top of the sprayer and is in threaded connection with the sprayer nut. The spray head nuts comprise the first spray head nut and the second spray head nut, during installation, the first spray head nut and the second spray head nut are buckled to the connecting part, so that the first spray head nut and the second spray head nut form the spray head nut rotationally connected with the connecting part, and then the connecting pipe of the spray head is in threaded connection with the spray head nut. By means of the installation sequence, the installation sight line of a user cannot be blocked by the connecting arm in the actual operation process, installation can be completed more quickly, and the time cost of installation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a spray arm structure of a dishwasher. Background Art

[0002] Dishwashers currently on the market generally have upper and lower spray arms in their inner tanks. The upper and lower spray arms are connected to the dishwasher's internal circulating water circuit through pipes, and rotate and spray water under the push of water flow to spray and rinse the tableware loaded on the bowl basket.

[0003] Regarding the connection structure of the spray arm, there is generally an inner water pipe in the washing chamber of the inner tank, and the spray arm is suspended and fixed on the joint of the inner water pipe. As for the connection method between the spray arm and the joint of the inner water pipe, the existing technology generally adopts direct buckle or large nut for connection. The direct buckle installation is unstable and easily loosens after the rotation of the spray arm, which may damage the tableware. The structure using large nut is more stable, but the installation steps are more complicated.

[0004] For example, patent publication number CN209346962U discloses an anti-detachment connection structure for a dishwasher spray arm, characterized in that the spray arm is provided with a connecting pipe, a fixing ring is provided on the outer wall of the connecting pipe, a flange is provided at the end of the connecting pipe to axially fix the fixing ring between the spray arm and the flange, a gap is provided between the inner wall of the fixing ring and the outer wall of the connecting pipe, an external thread is provided on the outer wall of the fixing ring, and an internal thread is provided at a corresponding position of the inner container of the dishwasher, so that the fixing ring can be threadedly connected to the inner container of the dishwasher;

[0005] The problem with the above technology is that during installation, a fixing ring must first be placed on the connecting pipe of the spray arm, and then screwed to the inner tank of the dishwasher through the fixing ring. In practice, when installing the fixing ring, the spray arm easily hinders the user's installation. The internal space of the dishwasher is small, and it is difficult for the user to extend his upper body into the dishwasher, making installation more difficult.

[0006] Therefore, a spray arm structure of a dishwasher is proposed to solve the above technical problems. Utility Model Content

[0007] In order to solve the above technical problems, the purpose of the present invention is to provide a spray arm structure for a dishwasher, which has simple installation steps and strong stability.

[0008] The technical solution adopted by the utility model to solve the problem is: a spray arm structure of a dishwasher, including a connecting arm, a spray head and a spray head nut, the connecting arm is provided with a connecting portion, the spray head nut is rotatably connected to the connecting portion, a connecting pipe is provided on the top of the spray head, the connecting pipe is threadedly connected to the spray head nut, the spray head nut includes a first spray head nut and a second spray head nut, the first spray head nut and the second spray head nut are buckled with each other to form a spray head nut, the first spray head nut and the second spray head nut are buckled at the connecting portion; the connecting portion is in the shape of an annular groove.

[0009] As a further improvement of the above technical solution, an internal thread is provided in the connecting pipe, an external thread is provided on the outer edge of the nozzle nut, and the locking direction of the thread connecting the connecting pipe and the nozzle nut is consistent with the rotation direction of the nozzle.

[0010] As a further improvement of the above technical solution, a protrusion is provided on the inner edge of the first nozzle nut, and a groove is provided on the inner edge of the second nozzle nut, and the protrusion is clamped in the groove.

[0011] As a further improvement of the above technical solution, the top edge of the nozzle nut is provided with an outwardly extending boss, and the external thread is located below the boss.

[0012] As a further improvement of the above technical solution, the cross-section of the connecting portion is I-shaped.

[0013] As a further improvement of the above technical solution, the nozzle includes an upper shell and a lower shell, the upper shell and the lower shell are buckled together to form the nozzle, and the connecting pipe is arranged on the top of the upper shell.

[0014] As a further improvement of the above technical solution, water outlet holes are provided on the top of the upper shell and the bottom of the lower shell.

[0015] The beneficial effect of the present invention is that during installation, the first nozzle nut and the second nozzle nut are first buckled and installed at the connecting portion, so that the first nozzle nut and the second nozzle nut form a nozzle nut rotatably connected to the connecting portion, and then the connecting pipe of the nozzle is screwed to the nozzle nut to complete the installation of the nozzle and the connecting arm. Through the above-mentioned installation sequence, the user will not be obstructed by the connecting arm during the actual operation, and the installation can be completed faster, reducing the time cost of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further explained below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2It is an exploded view of the utility model;

[0019] Figure 3 It is a bottom view of the utility model;

[0020] Figure 4 for Figure 3 A cross-sectional view of the AA portion;

[0021] Figure 5 for Figure 4 A partial enlarged view of part A;

[0022] Figure 6 This is a structural diagram of the nozzle nut of the utility model.

[0023] In the figure: 1-connecting arm, 11-connecting part, 2-sprinkler, 21-connecting pipe, 22-upper shell, 23-lower shell, 24-water outlet, 3-sprinkler nut, 31-first sprinkler nut, 311-protrusion, 32-second sprinkler nut, 321-groove, 33-boss. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figures 1 to 6 A spray arm structure of a dishwasher includes a connecting arm 1, a spray head 2, and a spray head nut 3. The connecting arm 1 is provided with a connecting portion 11. The spray head nut 3 is rotatably connected to the connecting portion 11. A connecting pipe 21 is provided on the top of the spray head 2. The connecting pipe 21 is threadedly connected to the spray head nut 3. The spray head nut 3 includes a first spray head nut 31 and a second spray head nut 32. The first spray head nut 31 and the second spray head nut 32 are buckled together to form the spray head nut 3. The first spray head nut 31 and the second spray head nut 32 are buckled at the connecting portion 11. The connecting portion 11 is in the shape of an annular groove.

[0029] During installation, first buckle the first nozzle nut 31 and the second nozzle nut 32 on the connecting part 11, so that the first nozzle nut 31 and the second nozzle nut 32 form a nozzle nut 3 that is rotatably connected to the connecting part 11, and then screw the connecting pipe 21 of the nozzle 2 to the nozzle nut 3 to complete the installation of the nozzle 2 and the connecting arm 1. Through the above-mentioned installation sequence, the user will not be obstructed by the connecting arm 1 in the actual operation, and can complete the installation faster, reducing the time cost of installation.

[0030] In the preferred embodiment, an internal thread is provided in the connecting pipe 21, and an external thread is provided on the outer edge of the nozzle nut 3. In order to prevent the nozzle 2 from detaching from the nozzle nut 3 during rotation, the locking direction of the thread connecting the connecting pipe 21 and the nozzle nut 3 is consistent with the rotation direction of the nozzle 2.

[0031] In the preferred embodiment, in order to facilitate the installation of the first nozzle nut 31 and the second nozzle nut 32 , a protrusion 311 is provided on the inner edge of the first nozzle nut 31 , and a groove 321 is provided on the inner edge of the second nozzle nut 32 , and the protrusion 311 is snap-engaged in the groove 321 .

[0032] In the preferred embodiment, in order to facilitate the user to install the nozzle nut 3 , a boss 33 extending outward is provided on the top edge of the nozzle nut 3 , and the external thread is located below the boss 33 .

[0033] In the preferred embodiment, the cross section of the connecting portion 11 is I-shaped.

[0034] In the preferred embodiment, the nozzle 2 includes an upper shell 22 and a lower shell 23 . The upper shell 22 and the lower shell 23 are buckled together to form the nozzle 2 . The connecting pipe 21 is arranged on the top of the upper shell 22 .

[0035] In the preferred embodiment, water outlet holes 24 are provided on the top of the upper shell 22 and the bottom of the lower shell 23 .

[0036] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A spray arm structure for a dishwasher, comprising a connecting arm (1), a spray head (2) and a spray head nut (3), wherein the connecting arm (1) is provided with a connecting portion (11), the spray head nut (3) is rotatably connected to the connecting portion (11), a connecting pipe (21) is provided at the top of the spray head (2), and the connecting pipe (21) is screwed to the spray head nut (3), characterized in that: The nozzle nut (3) comprises a first nozzle nut (31) and a second nozzle nut (32), wherein the first nozzle nut (31) and the second nozzle nut (32) are buckled together to form the nozzle nut (3), and the first nozzle nut (31) and the second nozzle nut (32) are buckled at the connecting portion (11); The connecting portion (11) is in the shape of an annular groove.

2. The spray arm structure of a dishwasher according to claim 1, characterized in that: The connecting pipe (21) is provided with an internal thread, and the outer edge of the nozzle nut (3) is provided with an external thread. The locking direction of the thread connecting the connecting pipe (21) and the nozzle nut (3) is consistent with the rotation direction of the nozzle (2).

3. The spray arm structure of a dishwasher according to claim 2, characterized in that: A protrusion (311) is provided on the inner edge of the first nozzle nut (31), and a groove (321) is provided on the inner edge of the second nozzle nut (32), and the protrusion (311) is engaged with the groove (321).

4. The spray arm structure of a dishwasher according to claim 3, characterized in that: The top edge of the nozzle nut (3) is provided with a boss (33) extending outward, and the external thread is located below the boss (33).

5. The spray arm structure of a dishwasher according to claim 1, characterized in that: The cross section of the connecting portion (11) is in an I-shape.

6. The spray arm structure of a dishwasher according to claim 1, characterized in that: The spray head (2) comprises an upper shell (22) and a lower shell (23), wherein the upper shell (22) and the lower shell (23) are buckled together to form the spray head (2), and the connecting pipe (21) is arranged on the top of the upper shell (22).

7. The spray arm structure of a dishwasher according to claim 6, characterized in that: The top of the upper shell (22) and the bottom of the lower shell (23) are both provided with water outlet holes (24).

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