Upper spraying arm mounting structure for cleaning machine and cleaning machine

Abstract

The upper gushing arm mounting structure comprises an upper gushing arm and a water supply pipe, a water inlet of the upper gushing arm is connected with a water outlet of the water supply pipe through a rotating part, an assembly opening corresponding to the water inlet is formed in the bottom wall of the upper gushing arm, and the rotating part penetrates through the assembly opening and the water inlet from bottom to top. The bottom of the rotating piece is in rotating fit with the bottom wall of the upper spraying arm and seals the assembling opening, the top of the rotating piece is detachably connected with the water outlet of the water supply pipe, and a water passing opening is formed in the side portion, located in the upper spraying arm, of the rotating piece. The water supply pipe and the upper spraying arm are rotationally connected through the rotating piece, the structure is simple and compact, so that the installation space occupied by the water supply pipe and the upper spraying arm in the vertical direction is greatly reduced, the saved vertical space can be used for increasing the height of a bowl basket or the height, the size and the like of placed tableware, and more requirements of consumers are met; and the rotating piece penetrates through the upper spraying arm and the water outlet of the water supply pipe from bottom to top and then slightly rotates to finish connection, and assembly is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, and particularly to an upper spray arm mounting structure for a cleaning machine and a cleaning machine for cleaning tableware and fruits and vegetables. Background Art

[0002] At present, for dishwashers with a relatively large volume, there are generally at least upper and lower two-layer spraying systems. The upper spray arm is generally rotatably connected to the water supply pipe in the middle and sprays upward to wash the dishes and bowls in the upper basket.

[0003] For example, the Chinese utility model patent "Upper Spray Arm Connection Structure for a Cleaning Machine and a Cleaning Machine" (Patent No.: CN215838900U, Application No.: CN202121480813.7) discloses an upper spray arm structure, which includes an upper spray arm and a water supply pipe. The water inlet of the upper spray arm is connected to the water outlet of the water supply pipe through a rotating assembly. The rotating assembly includes a rotating sleeve and a positioning sleeve. A first fitting sleeve extending upward around the water inlet is provided on the top wall of the upper spray arm. The lower end of the positioning sleeve is inserted into and in interference fit with the first fitting sleeve. The top of the positioning sleeve has a retaining ring that can abut against the rotating sleeve to axially limit it. A second fitting sleeve extending downward and detachably connected to the rotating sleeve through a snap structure is provided at the water outlet of the water supply pipe.

[0004] The above structure facilitates the assembly of the water supply pipe and the upper spray arm. However, due to the large number of fittings, it not only occupies a large vertical space but also has a complex assembly. Summary of the Utility Model

[0005] The first technical problem to be solved by the utility model is to provide an upper spray arm mounting structure for a cleaning machine that occupies less installation space and is convenient for assembly in view of the current situation of the prior art.

[0006] The second technical problem to be solved by the utility model is to provide a cleaning machine applying the above mounting structure in view of the current situation of the prior art.

[0007] The technical solution adopted by the utility model to solve at least one of the above technical problems is as follows:

[0008] An upper spray arm mounting structure for a cleaning machine includes an upper spray arm and a water supply pipe. An inlet is opened on the top wall of the upper spray arm, and the water supply pipe has a downward-facing outlet. The inlet of the upper spray arm is connected to the outlet of the water supply pipe through a rotating member. An assembly opening corresponding to the inlet is opened on the bottom wall of the upper spray arm. The rotating member is arranged through the assembly opening and the inlet from bottom to top. The bottom of the rotating member is rotationally matched with the bottom wall of the upper spray arm to close the assembly opening. The top of the rotating member is detachably connected to the outlet of the water supply pipe. A water passing opening is arranged on the side of the rotating member located in the upper spray arm.

[0009] A rotating member is adopted to rotatably connect the water supply pipe with the upper spray arm. The connection structure is simple and compact, so that the installation space occupied by the water supply pipe and the upper spray arm in the vertical direction is greatly reduced. The saved vertical space can be used to increase the height of the bowl basket or the height and volume of the tableware placed, etc., to meet more needs of consumers; and the rotating member can complete the connection by slightly rotating after passing through the upper spray arm and the water outlet of the water supply pipe from bottom to top, and the assembly is convenient.

[0010] Preferably, the rotating member includes a bottom plate, a connecting arm and a connecting sleeve. The bottom plate is rotatably abutted under the bottom wall of the upper spray arm. The connecting arm extends upward along the inner edge of the assembly port from the upper surface of the bottom plate. The water passing port is formed between two adjacent connecting arms. The connecting sleeve is arranged at the top of the connecting arm and is connected with the water outlet of the water supply pipe. With the above structure, the assembly port is closed by the bottom plate and rotatably cooperates with the upper spray arm. The bottom plate is thin, the cooperation structure is simple, and the vertical space is saved; the connecting arm is used to connect the bottom plate and the connecting sleeve into one body conveniently, and the connecting arm occupies less space, increases the area of the water passing port, and reduces the influence on water passing; the connecting sleeve is rotatably connected at the water outlet to improve the sealing performance and avoid water leakage here.

[0011] Preferably, the bottom plate, the connecting arm and the connecting sleeve are formed as one body. With such a structure, the rotating member can be integrally formed by injection molding, which is convenient for production and assembly.

[0012] Preferably, a diversion cone corresponding to the water inlet is arranged on the upper surface of the bottom plate, and the edge of the diversion cone is arranged close to the connecting arm. This structure can divide the water flow from the water inlet into two parts on both sides of the flow channel, reducing the energy loss caused by water flow disorder.

[0013] Preferably, the diversion cone is formed by locally arching the bottom plate upward, and a concave cavity is formed on the lower surface of the corresponding bottom plate. A gripping piece for manual operation is arranged in the concave cavity. With the above structure, during assembly, no additional tooling is required. Directly hold the gripping piece by hand, and the rotating member can pass through the assembly port and the water inlet from bottom to top.

[0014] Preferably, the edge of the water outlet of the water supply pipe extends downward to form a water outlet sleeve, and a limiting port is opened on the side wall of the water outlet sleeve. Correspondingly, a convex card that can be inserted and limited with the limiting port is protruded on the outer peripheral wall of the connecting sleeve. This structure facilitates limiting the connecting sleeve and the water outlet sleeve together.

[0015] Preferably, an L-shaped sliding groove is formed in the inner peripheral wall of the water outlet sleeve. The vertical portion of the L-shaped sliding groove extends upward from the lower edge of the water outlet sleeve, and the horizontal portion of the L-shaped sliding groove is located at the upper part of the water outlet sleeve and surrounds the limiting opening therein. The rotating member passes through the assembly port, the water inlet port and extends into the water outlet sleeve from bottom to top through the connecting sleeve. Then, the rotating member is rotated circumferentially for a moment, so that the convex card slides from the vertical portion into the limiting opening in the horizontal portion, and the limiting can be achieved, and the operation is very convenient.

[0016] Preferably, an avoidance opening is formed in the inner peripheral wall of the water outlet sleeve at a position opposite to the vertical portion of the L-shaped sliding groove, and the avoidance opening is communicated with the horizontal portion of the L-shaped sliding groove. The avoidance opening can provide a certain elastic space for the connection part, which is convenient for assembly.

[0017] Preferably, an assembly ring arranged around the periphery of the bottom plate is provided on the lower surface of the upper spray arm. The assembly ring can restrain the bottom plate therein, avoiding excessive radial friction between the bottom plate and the assembly port and affecting the sealing performance.

[0018] A dishwasher includes a box body. A water return cavity is arranged at the bottom of the box body. The lower end of the water supply pipe is connected to the water return cavity. A bowl basket that can be taken out or put into the box body is arranged at the upper part of the box body. The upper spray arm mounting structure described above is also included. The upper spray arm is rotatably arranged in the box body and is located at the bottom of the bowl basket, and is used for cleaning the tableware placed in the bowl basket upward.

[0019] Compared with the prior art, the advantages of the present utility model are as follows: The present utility model uses a rotating member to rotatably connect the water supply pipe and the upper spray arm. The connection structure is simple and compact, so that the installation space occupied by the water supply pipe and the upper spray arm in the vertical direction is greatly reduced. The saved vertical space can be used to increase the height of the bowl basket or the height and volume of the placed tableware, etc., to meet more needs of consumers; and the rotating member can be connected after passing through the upper spray arm and the water outlet of the water supply pipe from bottom to top and then slightly rotating, and the assembly is convenient. Description of the Drawings

[0020] Figure 1 is a schematic diagram of the upper spray arm mounting structure according to an embodiment of the present utility model;

[0021] Figure 2 is Figure 1 the bottom structure diagram of

[0022] Figure 3 is Figure 1 the sectional view of

[0023] Figure 4 is Figure 1 the exploded view of

[0024] Figure 5 is Figure 4 another view from an angle. Detailed implementation mode

[0025] The following further describes the present utility model in detail in conjunction with the embodiments in the accompanying drawings.

[0026] As Figures 1 to 5 Shown, the upper spray arm mounting structure for a dishwasher in this embodiment includes an upper spray arm 1 and a water supply pipe 2. An inlet 11 is opened on the top wall of the upper spray arm 1. The water supply pipe 2 has a downwardly arranged outlet 21. The inlet 11 of the upper spray arm 1 is connected to the outlet 21 of the water supply pipe 2 through a rotating member 3. An assembly opening 12 corresponding to the inlet 11 is opened on the bottom wall of the upper spray arm 1. The rotating member 3 is arranged through the assembly opening 12 and the inlet 11 from bottom to top. The bottom of the rotating member 3 is rotationally matched with the bottom wall of the upper spray arm 1 and closes the assembly opening 12. The top of the rotating member 3 is detachably connected to the outlet 21 of the water supply pipe 2. A water passing port 34 is arranged on the side of the rotating member 3 located in the upper spray arm.

[0027] Adopting a rotating member 3 to rotatably connect the water supply pipe 2 and the upper spray arm 1, the connection structure is simple and compact, so that the installation space occupied by the water supply pipe 2 and the upper spray arm 1 in the vertical direction is greatly reduced. The saved vertical space can be used to increase the height of the bowl basket or the height and volume of the tableware placed, etc., to meet more needs of consumers; and after the rotating member 3 passes through the upper spray arm 1 and the outlet 21 of the water supply pipe 2 from bottom to top and slightly rotates, the connection can be completed, and the assembly is convenient.

[0028] The rotating member 3 includes a bottom plate 31, a connecting arm 32 and a connecting sleeve 33. The bottom plate 31 is rotatably abutted under the bottom wall of the upper spray arm 1. The connecting arm 32 extends upward along the inner edge of the assembly opening 12 from the upper surface of the bottom plate 31. The water passing port is formed between two adjacent connecting arms 32. The connecting sleeve 33 is arranged at the top of the connecting arm 32 and is connected to the outlet 21 of the water supply pipe 2. With the above structure, the bottom plate 31 closes the assembly opening 12 and is rotationally matched with the upper spray arm 1. The bottom plate 31 is thin, the matching structure is simple, and the vertical space is saved; the connecting arm 32 is used to connect the bottom plate 31 and the connecting sleeve 33 into one body conveniently, and the connecting arm 32 occupies less space, increases the area of the water passing port, and reduces the influence on water passing; the connecting sleeve 33 is rotationally connected to the outlet 21 to improve the sealing performance and avoid water leakage here.

[0029] The bottom plate 31, the connecting arm 32 and the connecting sleeve 33 are formed as one body. With such a structure, the rotating member 3 can be integrally formed by injection molding, which is convenient for production and assembly.

[0030] A flow guiding cone 311 corresponding to the inlet 11 is arranged on the upper surface of the bottom plate 31, and the edge of the flow guiding cone 311 is arranged close to the connecting arm 32. This structure can divert the water flow from the inlet 11 to both sides of the flow channel, reducing the energy loss caused by water flow disorder.

[0031] The flow guide cone 311 is formed by the local upward arching of the bottom plate 31. The lower surface of the corresponding bottom plate 31 forms a concave cavity 312, and a gripping piece 313 for manual operation is arranged in the concave cavity 312. With the above structure, during assembly, no additional tooling is required. One can directly hold the gripping piece 313 by hand, and the rotating part 3 can pass through the assembly port 12 and the water inlet 11 from bottom to top.

[0032] The edge of the water outlet 21 of the water supply pipe 2 extends downward to form a water outlet sleeve 22. A limiting port 221 is formed on the side wall of the water outlet sleeve 22. Correspondingly, a convex card 331 that can be inserted and limited with the limiting port 221 protrudes from the outer peripheral wall of the connecting sleeve 33. This structure facilitates the limiting of the connecting sleeve 33 and the water outlet sleeve 22 together.

[0033] An L-shaped sliding groove is formed on the inner peripheral wall of the water outlet sleeve 22. The vertical part 222 of the L-shaped sliding groove extends upward from the lower edge of the water outlet sleeve 22, and the horizontal part 223 of the L-shaped sliding groove is located in the upper part of the water outlet sleeve 22 and surrounds the limiting port 221 therein. The rotating part 3 passes through the assembly port 12 and the water inlet 11 from bottom to top until the connecting sleeve 33 extends into the water outlet sleeve 22. Then, the rotating part 3 is rotated circumferentially, so that the convex card 331 slides from the vertical part 222 into the limiting port 221 in the horizontal part 223, and the limiting can be achieved, and the operation is very convenient.

[0034] An avoidance port 224 is formed on the inner peripheral wall of the water outlet sleeve 22 at a position opposite to the vertical part 222 of the L-shaped sliding groove, and the avoidance port 224 is communicated with the horizontal part 223 of the L-shaped sliding groove. The avoidance port 224 can provide a certain elastic space for the connection part, facilitating assembly.

[0035] An assembly ring 13 arranged around the periphery of the bottom plate 31 is provided on the lower surface of the upper spray arm 1. The assembly ring 13 can confine the bottom plate 31 therein, preventing the bottom plate 31 from rubbing excessively against the assembly port 12 in the radial direction and affecting the sealing performance.

[0036] The dishwasher of this embodiment includes a box body. A water return cavity is arranged at the bottom of the box body. The lower end of the water supply pipe 2 is connected to the water return cavity. A bowl basket that can be taken out or put into the box body is arranged at the upper part of the box body. It also includes the above-mentioned upper spray arm mounting structure. The upper spray arm 1 is rotatably arranged in the box body and is located at the bottom of the bowl basket, and is used for cleaning the tableware placed in the bowl basket upward.

[0037] This embodiment uses a rotating part 3 to rotatably connect the water supply pipe 2 and the upper spray arm 1. The connection structure is simple and compact, so that the installation space occupied by the water supply pipe 2 and the upper spray arm 1 in the vertical direction is greatly reduced. The saved vertical space can be used to increase the height of the bowl basket or the height and volume of the placed tableware, etc., to meet more needs of consumers; and the rotating part 3 can be connected by slightly rotating after passing through the upper spray arm 1 and the water outlet 21 of the water supply pipe 2 from bottom to top, and the assembly is convenient.

[0038] In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present utility model. However, the use of these terms here is only for the purpose of convenience in description and is determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed by the present utility model can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

Claims

1. An upper spray arm mounting structure for a washing machine, comprising an upper spray arm (1) and a water supply pipe (2). An inlet is formed in the top wall of the upper spray arm (1), and the water supply pipe (2) has a downwardly arranged outlet. The inlet of the upper spray arm (1) is connected to the outlet of the water supply pipe (2) through a rotating member (3), characterized in that: An assembly port corresponding to the water inlet is formed in the bottom wall of the upper spray arm (1). The rotating member (3) is arranged through the assembly port and the water inlet from bottom to top. The bottom of the rotating member (3) is rotationally matched with the bottom wall of the upper spray arm (1) to close the assembly port. The top of the rotating member (3) is detachably connected to the water outlet of the water supply pipe (2). Water passing ports are arranged on the side of the rotating member (3) located in the upper spray arm (1).

2. The upper spray arm mounting structure for a washing machine according to claim 1, characterized in that: The rotating member (3) includes a bottom plate (31), a connecting arm (32) and a connecting sleeve (33). The bottom plate (31) rotatably abuts against the bottom wall of the upper spray arm (1). The connecting arm (32) extends upward along the inner edge of the assembly port from the upper surface of the bottom plate (31). The water passing ports are formed between adjacent connecting arms (32). The connecting sleeve (33) is arranged at the top of the connecting arm (32) and connected to the water outlet of the water supply pipe (2).

3. The upper spray arm mounting structure for a washing machine according to claim 2, characterized in that: The bottom plate (31), the connecting arm (32) and the connecting sleeve (33) are integrally formed.

4. The upper spray arm mounting structure for a washing machine according to claim 2, characterized in that: A diversion cone corresponding to the water inlet is arranged on the upper surface of the bottom plate (31). The edge of the diversion cone is arranged close to the connecting arm (32).

5. The upper spray arm mounting structure for a washing machine according to claim 4, characterized in that: The diversion cone is formed by locally arching the bottom plate (31) upward. A concave cavity is formed on the lower surface of the corresponding bottom plate (31). A gripping piece for manual operation is arranged in the concave cavity.

6. The upper spray arm mounting structure for a cleaning machine according to claim 2, characterized in that: The edge of the water outlet of the water supply pipe (2) extends downward to form a water outlet sleeve. A limiting port is formed in the side wall of the water outlet sleeve. Correspondingly, a convex card capable of being inserted and limited with the limiting port is protruded on the outer peripheral wall of the connecting sleeve (33).

7. The upper spray arm mounting structure for a washing machine according to claim 6, characterized in that: An L-shaped sliding groove is formed in the inner peripheral wall of the water outlet sleeve. The vertical part of the L-shaped sliding groove extends upward from the lower edge of the water outlet sleeve. The horizontal part of the L-shaped sliding groove is located in the upper part of the water outlet sleeve and surrounds the limiting port therein.

8. The upper spray arm mounting structure for a cleaning machine according to claim 7, characterized in that: An avoidance port is formed in the inner peripheral wall of the water outlet sleeve at a position opposite to the vertical part of the L-shaped sliding groove. The avoidance port is communicated with the horizontal part of the L-shaped sliding groove.

9. The upper spray arm mounting structure for a cleaning machine according to claim 2, characterized in that: An assembly ring surrounding the periphery of the bottom plate (31) is arranged on the lower surface of the upper spray arm (1).

10. A cleaning machine, comprising a box body, a water return cavity is arranged at the bottom of the box body, the lower end of the water supply pipe (2) is connected to the water return cavity, and a bowl basket that can be taken out of or put into the box body is arranged at the upper part of the box body, and is characterized in that: It further includes the upper spray arm mounting structure according to any one of claims 1 to 9. The upper spray arm (1) is rotatably arranged in the box body and located at the bottom of the bowl basket for cleaning the tableware placed in the bowl basket upward.

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