Lower gushing arm mounting structure of dish washing machine

Abstract

The utility model provides a dish-washing machine lower gushing arm installation structure which comprises an inner container, a shunt valve body, a lower gushing arm, a gushing arm base and a nut, the shunt valve body is provided with a connecting part penetrating through the inner container, a channel is formed in the connecting part, the outer wall of the connecting part is provided with a threaded structure, and the nut is in threaded connection with the connecting part and is provided with an avoiding opening corresponding to the channel. An elastic clamping jaw is arranged on the connecting part, the spraying arm seat is fixed in the shunt valve body and is provided with a connecting port, the lower spraying arm is provided with a water inlet column body which penetrates through the avoiding port and the channel and is connected with the connecting port, and a first step for clamping the elastic clamping jaw and a second step in contact with the inner wall of the connecting port are arranged on the periphery of the water inlet column body. The installation structure is used for installing the lower spraying arm, the number of parts is small, and the installation structure has the advantages of being easy to assemble and disassemble and good in sealing performance.

Description

[Technical Field]

[0002] This utility model relates to a mounting structure for the lower spray arm of a dishwasher. [Background Technology]

[0004] Dishwashers are household appliances that automatically wash and dry dishes, making them very popular. To improve cleaning effectiveness and address the issue of blind spots in the spray system, current dishwashers typically have multiple spray arms on the inner wall of the drum. The lower spray arm is the most common type, installed on the bottom wall of the drum and spraying upwards to clean the bottom of the dishes. However, current installation methods for the lower spray arm present challenges in terms of installation and disassembly.

[0005] Therefore, it is necessary to make further improvements. [Utility Model Content]

[0007] The purpose of this invention is to overcome the above-mentioned problems. We provide a mounting structure for the lower spray arm of a dishwasher, which has the advantage of easy disassembly and assembly.

[0008] To achieve the above objectives, this utility model provides a dishwasher lower spray arm mounting structure, which includes an inner tank, a water distribution valve body, a lower spray arm, a spray arm seat, and a nut. The water distribution valve body has a connecting part that passes through the inner tank, a channel is formed inside the connecting part, and a threaded structure is provided on the outer wall. The nut is screwed to the connecting part and has a clearance opening corresponding to the channel. An elastic claw is provided on the connecting part. The spray arm seat is fixed inside the water distribution valve body and has a connection opening. The lower spray arm has a water inlet column that passes through the clearance opening and the channel and connects to the connection opening. The outer periphery of the water inlet column is provided with a first step for the elastic claw to engage and a second step that contacts the inner wall of the connection opening.

[0009] In one or more embodiments, a sealing ring is provided at the connection between the water distribution valve body and the inner tank.

[0010] In one or more embodiments, the inner liner has a hole for the connecting part to pass through, the hole has a positioning port, and the water distribution valve body has a rib connected to the positioning port.

[0011] In one or more embodiments, the inner liner has a stamped arched portion at its center, and the hole is formed on the arched portion.

[0012] In one or more embodiments, two second steps are provided on the outer periphery of the water inlet column, which are spaced apart vertically.

[0013] In one or more embodiments, a third step is provided on the outer periphery of the water inlet column, and the outer periphery of the third step forms a limit with the edge of the avoidance port.

[0014] In one or more embodiments, the connecting portion is provided with three or more elastic claws.

[0015] Compared with the prior art, the present invention has the following advantages: the installation structure used to install the lower spray arm requires fewer parts, and it is easy to install and disassemble, and has good sealing performance. [Attached Image Description]

[0017] Figure 1 This is an exploded view of the lower spray arm mounting structure in this embodiment;

[0018] Figure 2 This is a cross-sectional view of the spray arm mounting structure in this embodiment.

Detailed Implementation Methods

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] See appendix Figure 1-2 This application provides a dishwasher lower spray arm mounting structure, which includes an inner tank 1, a water distribution valve body 2, a lower spray arm 3, a spray arm seat 4, and a nut 5. The water distribution valve body has a connecting part 6 that passes through the inner tank 1, a channel is formed inside the connecting part, and a threaded structure is provided on the outer wall. The nut 5 is screwed to the connecting part 6 and has a clearance opening 51 corresponding to the channel. An elastic claw 7 is provided on the connecting part. The spray arm seat 4 is fixed inside the water distribution valve body 2 and has a connection opening 41. The lower spray arm 3 has an inlet that passes through the clearance opening 51 and the channel and connects to the connection opening 41. The water column 31 has a first step 8 for the elastic claw to engage and a second step 9 that contacts the inner wall of the connection port 41 on its outer periphery. The water distribution valve body is screwed to the water distribution valve body with a nut, and the water distribution valve body is fixed to the bottom of the inner tank. After being connected and fixed to the water distribution valve body through the spray arm seat, the lower spray arm is directly passed through the clearance port and channel and connected to the spray arm seat. The lower spray arm is engaged with the first step through the elastic claw on the connection part to prevent the lower spray arm from loosening. This installation structure simplifies the installation process of the lower spray arm and realizes the conduction of the water circuit.

[0022] A sealing ring 10 is provided at the connection between the water distribution valve body 2 and the inner tank 1. Specifically, the sealing ring is sleeved on the bottom surface of the connection part. During the process of tightening the nut and the connection part, the sealing ring will be squeezed to achieve a sealing effect.

[0023] The inner liner 1 has a hole 11 for the connecting part 6 to pass through. An arched part 101 is provided in the middle of the inner liner. The arched part is formed by stamping the inner liner. The hole 11 is opened on the arched part. The horizontal height of the hole is designed to be higher than the bottom wall of the inner liner, which can improve the sealing performance. A positioning port 12 is opened on the hole. The water distribution valve body 2 is provided with a rib 13 that connects to the positioning port. The cooperation between the positioning port and the rib can position and prevent slippage of the water distribution valve body, and facilitate the connection of the nut.

[0024] Two second steps 9 are provided on the outer periphery of the water inlet column 31, which are spaced apart vertically. The second steps and the inner wall of the connection port can form a local sealing effect.

[0025] A third step 14 is provided on the outer periphery of the water inlet column 31. The outer periphery of the third step and the edge of the clearance port 51 form a limit, which can make the lower spray arm more stable when rotating. The connecting part 6 is provided with three or more elastic claws 7. The elastic claws play a role in preventing the lower spray arm from loosening, ensuring that the lower spray arm is more stable and reliable when rotating.

[0026] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.

Claims

1. A dishwasher lower spray arm mounting structure, characterized in that: The device includes an inner tank (1), a water distribution valve body (2), a lower spray arm (3), a spray arm seat (4), and a nut (5). The water distribution valve body has a connecting part (6) that passes through the inner tank (1). A channel is formed inside the connecting part, and the outer wall is provided with a threaded structure. The nut (5) is screwed to the connecting part (6) and has a corresponding clearance opening (51). An elastic claw (7) is provided on the connecting part. The spray arm seat (4) is fixed inside the water distribution valve body (2) and has a connection opening (41). The lower spray arm (3) has a water inlet column (31) that passes through the clearance opening (51) and the channel and connects to the connection opening (41). The outer periphery of the water inlet column is provided with a first step (8) for the elastic claw to engage, and a second step (9) that contacts the inner wall of the connection opening (41).

2. The dishwasher lower spray arm mounting structure according to claim 1, characterized in that: A sealing ring (10) is provided at the connection between the water distribution valve body (2) and the inner tank (1).

3. The dishwasher lower spray arm mounting structure according to claim 1, characterized in that: The inner liner (1) has a hole (11) through which the connecting part (6) passes, and a positioning port (12) is provided on the hole. The water distribution valve body (2) is provided with a rib (13) that connects to the positioning port.

4. The dishwasher lower spray arm mounting structure according to claim 3, characterized in that: The inner liner (1) has a stamped arched part (101) at the middle position, and the hole (11) is opened on the arched part.

5. The dishwasher lower spray arm mounting structure according to claim 1, characterized in that: Two second steps (9) are provided on the outer periphery of the water inlet column (31) at intervals.

6. The dishwasher lower spray arm mounting structure according to claim 1, characterized in that: A third step (14) is provided on the outer periphery of the water inlet column (31), and the outer periphery of the third step forms a limit with the edge of the avoidance opening (51).

7. The dishwasher lower spray arm mounting structure according to claim 1, characterized in that: The connecting part (6) is provided with three or more elastic claws (7).

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