Spray arm assembly and washing equipment having the same

Abstract

The present invention discloses a spray arm assembly and a washing device having the same, wherein the spray arm assembly comprises: a first spray arm and a second spray arm, wherein the first spray arm is provided with a first connecting pipe; a connecting assembly, wherein the connecting assembly comprises: a connecting ring, wherein the connecting ring is rotatably sleeved on the first connecting pipe, and the second spray arm is detachably connected to the connecting ring; and a connecting member, wherein the connecting member is connected to the first connecting pipe, and the connecting member is suitable for stopping the connecting ring to prevent the connecting ring from falling out of the first connecting pipe. The spray arm assembly according to an embodiment of the present invention is rotatably sleeved on the first connecting pipe by the connecting ring, and the connecting member prevents the connecting ring from falling out, so that the first spray arm and the second spray arm can be rotatably and reliably connected, and the connection reliability is not easily affected by rotation wear, and the first spray arm and the second spray arm are detachable, which reduces the difficulty of cleaning and makes the spray arm assembly clean more thoroughly.

Description

Technical Field

[0001] The present invention relates to the technical field of washing equipment, and more particularly to a spray arm assembly and a washing equipment having the same. Background Art

[0002] With the improvement of material living standards, dishwashers that can free your hands are gradually becoming a standard of quality life. Compared with traditional hand washing, dishwashers have the advantages of washing cleanly, sterilizing, saving water and labor.

[0003] In the related art, the dishwasher includes two spray arms for spray washing. The two spray arms are matched through bearings. The bearings and the spray arms are interference-fitted, and the dimensional accuracy is high. Long-term operation will cause wear and loosening, resulting in separation of the spray arms and the bearings, and the spray structure is easily damaged. In addition, the bearing connection structure cannot be disassembled, resulting in the two spray arms being unable to be separated for cleaning, which increases the difficulty of cleaning and is not thorough. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a spray arm assembly, wherein the first spray arm and the second spray arm of the spray arm assembly are detachable, and the cleaning is convenient and thorough.

[0005] Another object of the present invention is to provide a washing device having the above-mentioned spray arm assembly.

[0006] According to an embodiment of the present invention, the spray arm assembly includes: a first spray arm and a second spray arm, the first spray arm is provided with a first connecting pipe; a connecting assembly, the connecting assembly includes: a connecting ring, the connecting ring is rotatably mounted on the first connecting pipe, the second spray arm is detachably connected to the connecting ring; a connecting piece, the connecting piece is connected to the first connecting pipe, and the connecting piece is suitable for stopping the connecting ring to prevent the connecting ring from escaping from the first connecting pipe.

[0007] According to the spray arm assembly of the embodiment of the present invention, the connecting ring is rotatably mounted on the first connecting pipe and the connecting piece prevents the connecting ring from coming off, so that the first spray arm and the second spray arm can be rotatably and reliably connected, and the connection reliability is not easily affected by rotational wear. The first spray arm and the second spray arm are detachable, which reduces the difficulty of cleaning and makes the spray arm assembly cleaned more thoroughly.

[0008] In addition, the spray arm assembly according to the above embodiment of the present invention may also have the following additional technical features:

[0009] According to some embodiments of the present invention, the connecting member includes: a connecting portion, which is detachably connected to the first connecting pipe; and an anti-detachment portion, which is arranged on the outer peripheral surface of the connecting portion and is located on the side of the connecting ring close to the second spray arm, and the maximum dimension of the anti-detachment portion along the radial direction of the connecting ring is larger than the inner diameter of the connecting ring.

[0010] According to some embodiments of the present invention, the anti-slip portion is an annular rib extending around the connecting portion, or the anti-slip portion includes a plurality of protrusions distributed along the circumference of the connecting portion.

[0011] According to some embodiments of the present invention, the connecting part includes a second connecting tube, the second connecting tube is inserted into the first connecting tube, the first connecting tube is provided with a first limiting protrusion, and the second connecting tube is provided with a limiting matching protrusion, and the first limiting protrusion is located on the side of the limiting matching protrusion close to the anti-detachment part.

[0012] According to some embodiments of the present invention, the first spray arm is rotatable, and a second limiting protrusion is provided on the side of the first limiting protrusion facing the limiting matching protrusion, and the second limiting protrusion is located at the rear side of the limiting matching protrusion along the rotation direction of the first spray arm.

[0013] According to some embodiments of the present invention, a third limiting protrusion is further provided on the side of the first limiting protrusion facing the limiting matching protrusion, the third limiting protrusion is located on the front side of the limiting matching protrusion along the rotation direction of the first spray arm, and the height of the third limiting protrusion protruding from the first limiting protrusion is less than the height of the second limiting protrusion protruding from the first limiting protrusion.

[0014] According to some embodiments of the present invention, the connection assembly further includes: a washer, which is rotatably sleeved on the first connection pipe and is located between the connection ring and the anti-detachment portion.

[0015] According to some embodiments of the present invention, the gasket is made of polytetrafluoroethylene.

[0016] According to some embodiments of the present invention, the gasket includes a gasket body and a plurality of gasket protrusions, wherein the gasket protrusions are disposed on an inner circumferential surface of the gasket body and are spaced apart and distributed along the circumferential direction of the gasket body.

[0017] According to some embodiments of the present invention, the connecting ring includes: a cylinder, which is sleeved on the first connecting tube; and an outer protrusion, which is provided on the outer circumferential surface of the cylinder and abuts against the connecting piece.

[0018] According to some embodiments of the present invention, the connecting ring further comprises: an inner convex portion, the inner convex portion is provided on the inner circumferential surface of the cylinder, and the inner convex portion is a plurality of inner convex portions distributed and spaced apart along the circumference of the cylinder.

[0019] According to some embodiments of the present invention, the second spray arm is provided with a buckle, and the buckle is buckled with the connecting ring.

[0020] According to some embodiments of the present invention, the buckle includes an arm and a hook head, one end of the arm is connected to the second spray arm, and the other end of the arm is provided with the hook head, and the hook head is abutted against the surface of the connecting ring facing away from the second spray arm.

[0021] According to some embodiments of the present invention, there are a plurality of buckles, and the buckles are distributed at intervals along the circumference of the connecting ring.

[0022] According to some embodiments of the present invention, the second spray arm is provided with a pipe joint, and the pipe joint passes through the connecting piece and the connecting ring and extends into the first connecting pipe.

[0023] According to some embodiments of the present invention, the first spray arm has a first chamber and a first spray hole connected to the first chamber, and the second spray arm has a second chamber connected to the first chamber and a second spray hole connected to the second chamber, wherein the first spray hole is used to drive the first spray arm to rotate around a first direction, and the second spray hole is used to drive the second spray arm to rotate around a second direction, and the first direction and the second direction are the same or opposite.

[0024] According to some embodiments of the present invention, the first spray arm is communicated with the second spray arm, and one of the first spray arm and the second spray arm is communicated with a water inlet pipe.

[0025] A washing device according to an embodiment of the present invention includes a spray arm assembly according to an embodiment of the present invention.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 is a schematic structural diagram of a spray arm assembly according to an embodiment of the present invention;

[0029] Figure 2 yes Figure 1 The middle circle shows the enlarged structural schematic diagram of A;

[0030] Figure 3 is a structural schematic diagram of a first spray arm and a connecting assembly of a spray arm assembly according to an embodiment of the present invention;

[0031] Figure 4 yes Figure 3 The middle circle shows the enlarged structural schematic diagram of B;

[0032] Figure 5 is a structural schematic diagram of a second spray arm and a connecting assembly of a spray arm assembly according to an embodiment of the present invention;

[0033] Figure 6 yes Figure 5 The middle circle shows the enlarged structural schematic diagram of point C.

[0034] Reference numerals:

[0035] Spray arm assembly 100;

[0036] A first spray arm 10; a first spray hole 101; a first connecting pipe 11; a first limiting convex portion 111; a second limiting convex portion 112; and a third limiting convex portion 113;

[0037] Second spray arm 20; second spray hole 201; buckle 21; arm portion 211; hook head 212; pipe connector 22;

[0038] Connecting assembly 30;

[0039] Connecting ring 31; cylinder 311; outer convex portion 312; inner convex portion 313;

[0040] Connecting member 32; connecting portion 33; second connecting pipe 331; limiting matching convex portion 332; anti-slip portion 34; convex 341;

[0041] Washer 35 ; washer body 351 ; washer protrusion 352 . DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] In the description of the present invention, "first feature" and "second feature" may include one or more such features, "plurality" means two or more, a first feature "above" or "below" the second feature may include the first and second features being directly in contact, or may include the first and second features not being in direct contact but being in contact through another feature between them, and a first feature "above", "above" and "above" the second feature may include the first feature being directly above or diagonally above the second feature, or may simply mean that the first feature is horizontally higher than the second feature.

[0045] The spray arm assembly 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0046] Reference Figure 1-Figure 6 As shown, the spray arm assembly 100 according to an embodiment of the present invention may include: a first spray arm 10 , a second spray arm 20 and a connection assembly 30 .

[0047] Specifically, if Figure 1 and Figure 2 As shown, the first spray arm 10 is provided with a first connecting pipe 11. The connecting assembly 30 includes a connecting ring 31 and a connecting member 32. The connecting ring 31 is rotatably sleeved on the first connecting pipe 11, and the second spray arm 20 is detachably connected to the connecting ring 31. In addition, the connecting member 32 is connected to the first connecting pipe 11, and the connecting member 32 can stop the connecting ring 31 to prevent the connecting ring 31 from being disengaged from the first connecting pipe 11, thereby realizing the connection between the first spray arm 10 and the second spray arm 20.

[0048] By rotating the connecting ring 31 relative to the first connecting tube 11, the first spray arm 10 and the second spray arm 20 can also rotate relative to each other, and the rotation states of the first spray arm 10 and the second spray arm 20 do not interfere with each other, which is conducive to improving the smoothness of the rotation of the first spray arm 10 and the second spray arm 20. The first spray arm 10 and the second spray arm 20 can perform a wide range and multi-angle flushing on the items to be washed (such as tableware) to improve the washing effect. And the connecting ring 31 is stopped by the connecting member 32, so that the first spray arm 10 and the second spray arm 20 are reliably connected, and it is not easy for the first spray arm 10 and the second spray arm 20 to be separated and damaged during operation due to rotation wear.

[0049] It should be noted that during the operation of the first spray arm 10 and the second spray arm 20, the rotation directions of the first spray arm 10 and the second spray arm 20 may be the same or different, or one of the first spray arm 10 and the second spray arm 20 may rotate while the other does not rotate during the operation. Here, the second spray arm 20 and the connecting ring 31 may rotate synchronously or may rotate relative to each other, which is within the protection scope of the present invention.

[0050] The first spray arm 10 and the second spray arm 20 can be disassembled and assembled by disassembling and assembling between the second spray arm 20 and the connecting ring 31. Therefore, when the first spray arm 10 and the second spray arm 20 need to be cleaned, the second spray arm 20 and the connecting ring 31 can be disassembled to separate the first spray arm 10 and the second spray arm 20, making it easier to clean the first spray arm 10 and the second spray arm 20.

[0051] In some embodiments of the present invention, the first spray arm 10 may be connected to the second spray arm 20, and one of the first spray arm 10 and the second spray arm 20 may be connected to the water inlet pipe, so that the water inlet pipe can supply water to the first spray arm 10 and the second spray arm 20 at the same time. Figure 1 In the example shown, the first spray arm 10 and the second spray arm 20 are distributed in the up-down direction, the first spray arm 10 is located below the second spray arm 20 and the second spray arm 20 is connected to the water inlet pipe, so that the first spray arm 10 forms a lower spray arm and the second spray arm 20 forms an upper spray arm. In other words, the lower spray arm is provided with a first connecting pipe 11, and the upper spray arm is detachably connected to a connecting ring 31 sleeved on the first connecting pipe 11.

[0052] Of course, according to the above description, the first spray arm 10 is formed as an upper spray arm, the second spray arm 20 is formed as a lower spray arm, the upper spray arm is provided with a first connecting pipe 11, and the lower spray arm is detachably connected to the connecting ring 31 sleeved on the first connecting pipe 11. The technical solution is understandable to those skilled in the art.

[0053] According to the spray arm assembly 100 of the embodiment of the present invention, the connecting ring 31 is rotatably mounted on the first connecting pipe 11 and the connecting member 32 prevents the connecting ring 31 from coming out, so that the first spray arm 10 and the second spray arm 20 can be rotatably and reliably connected, and the connection reliability is not easily affected by rotational wear. In addition, the first spray arm 10 and the second spray arm 20 are detachable, which reduces the difficulty of cleaning and makes the spray arm assembly 100 more thoroughly cleanable.

[0054] According to some embodiments of the present invention, referring to Figure 2 and Figure 4 As shown, the connecting member 32 includes: a connecting portion 33 and an anti-detachment portion 34. The connecting portion 33 is detachably connected to the first connecting pipe 11, so that the connecting member 32 and the first spray arm 10 are detachable, so that the connecting ring 31 can be detached from the first connecting pipe 11, so as to further improve the convenience of cleaning the spray arm assembly 100, reduce cleaning dead angles, and make cleaning more thorough.

[0055] In addition, the anti-detachment portion 34 is provided on the outer peripheral surface of the connecting portion 33, and the anti-detachment portion 34 is located on the side of the connecting ring 31 close to the second spray arm 20, and the maximum dimension of the anti-detachment portion 34 along the radial direction of the connecting ring 31 is larger than the inner diameter of the connecting ring 31, so that when the connecting portion 33 is connected to the first connecting pipe 11, the anti-detachment portion 34 can effectively prevent the connecting ring 31 from being removed from the first connecting pipe 11, so as to improve the reliability of the connection between the first spray arm 10 and the second spray arm 20.

[0056] The specific structure of the anti-slip portion 34 can be flexibly set according to actual conditions. For example, the anti-slip portion 34 can be an annular convex rib extending around the connecting portion 33, and the outer diameter of the annular convex rib is larger than the inner diameter of the connecting ring 31, which has a good effect of preventing the connecting ring 31 from slipping out of the first connecting tube 11 and has a simple structure. For another example, the anti-slip portion 34 includes a plurality of protrusions 341, and the plurality of protrusions 341 are distributed along the circumference of the connecting portion 33, which can also play an anti-slip effect, and is conducive to weight reduction and easy demoulding.

[0057] For example, in Figure 4 In the example shown, the anti-slip portion 34 includes two protrusions 341, and the protrusions 341 are arc-shaped ribs extending along the circumference of the connecting portion 33, and the outer diameter of the circular ring where the arc-shaped ribs are located is greater than the inner diameter of the connecting ring 31. Of course, Figure 4 The two arc-shaped ribs are only for illustrative purposes. The specific structure and number of the protrusions 341 include but are not limited to Figure 4 As shown, it is only necessary to meet the requirement of being able to prevent the connecting ring 31 from falling off.

[0058] The connection structure between the connection portion 33 and the first connection pipe 11 according to some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0059] like Figure 2 and Figure 4 As shown, the connecting portion 33 includes a second connecting tube 331, which is inserted into the first connecting tube 11. The first connecting tube 11 is provided with a first limiting protrusion 111, and the second connecting tube 331 is provided with a limiting matching protrusion 332. The first limiting protrusion 111 is located on a side of the limiting matching protrusion 332 close to the anti-detachment portion 34 to prevent the second connecting tube 331 from escaping from the first connecting tube 11, thereby achieving the connection between the first connecting tube 11 and the connecting portion 33. For example, in Figure 4 In the example shown, the second connecting tube 331 is inserted downward into the first connecting tube 11 , and the first limiting protrusion 111 is located above the limiting matching protrusion 332 to prevent the second connecting tube 331 from moving upward.

[0060] In the embodiment where the first spray arm 10 is rotatable, Figure 4 As shown, a second limiting protrusion 112 may be provided on one side of the first limiting protrusion 111 facing the limiting matching protrusion 332, and the second limiting protrusion 112 is located at the rear side of the limiting matching protrusion 332 along the rotation direction of the first spray arm 10. Figure 4 In the example shown, the first spray arm 10 can rotate counterclockwise around the rotation axis, and the second limiting protrusion 112 is provided on the lower side of the first limiting protrusion 111, and the second limiting protrusion 112 is located at the rear side of the limiting matching protrusion 332 in the counterclockwise direction. Therefore, the first limiting protrusion 111 and the second limiting protrusion 112 generally constitute an L-shaped limiting structure, and during the rotation of the first spray arm 10, the second limiting protrusion 112 can abut against the limiting matching protrusion 332, so as to limit the limiting matching protrusion 332 from the rear side of the rotation direction of the first spray arm 10, so that the limiting matching protrusion 332 is always located on the side of the first limiting protrusion 111 close to the anti-slip portion 34.

[0061] In some embodiments, continue to refer to Figure 4 As shown, a third limiting protrusion 113 may be further provided on one side of the first limiting protrusion 111 facing the limiting matching protrusion 332, and the third limiting protrusion 113 is located at the front side of the limiting matching protrusion 332 along the rotation direction of the first spray arm 10. Figure 4 In the example shown, the third limiting protrusion 113 is located at the front side of the limiting protrusion in the counterclockwise direction. Therefore, the first limiting protrusion 111, the second limiting protrusion 112 and the third limiting protrusion 113 generally constitute a buckling structure with a sinking platform with an opening downward. When the first spray arm 10 starts to rotate or ends its rotation, the first spray arm 10 may shake. By providing the third limiting protrusion 113, it is possible to prevent the limiting mating protrusion 332 from moving in the opposite direction and disengaging from the first limiting protrusion 111 in the above case, so as to further improve the reliability of the connection between the connecting member 32 and the first connecting pipe 11.

[0062] In addition, if Figure 4 As shown, the height of the third limiting protrusion 113 protruding from the first limiting protrusion 111 is less than the height of the second limiting protrusion 112 protruding from the first limiting protrusion 111. The second limiting protrusion 112 is relatively high, which can effectively prevent the connection member 32 and the first connecting pipe 11 from being disengaged during the rotation of the first spray arm 10, and the third limiting protrusion 113 is relatively low, which facilitates the disassembly and assembly of the connection member 32 and the first connecting pipe 11.

[0063] Specifically, during assembly, the second connecting tube 331 can be inserted into the first connecting tube 11 until the limiting fitting protrusion 332 moves to the bottom of the third limiting protrusion 113, and then the first spray arm 10 is rotated clockwise or the connecting piece 32 is rotated counterclockwise so that the limiting fitting protrusion 332 crosses the third limiting protrusion 113 and moves to the bottom of the first limiting protrusion 111, and is located between the first limiting protrusion 111 and the second limiting protrusion 112, thereby completing the assembly of the connecting piece 32 and the first connecting tube 11.

[0064] In some embodiments of the present invention, Figure 1-Figure 4 As shown, the connection assembly 30 may further include a washer 35, which is rotatably sleeved on the first connection pipe 11, and the washer 35 is located between the connection ring 31 and the anti-detachment portion 34. During the rotation of the first spray arm 10 and the second spray arm 20, the connection ring 31 and the anti-detachment portion 34 will rotate relative to each other. By providing the washer 35, the resistance to the relative rotation between the connection ring 31 and the anti-detachment portion 34 can be reduced, and the wear degree of the connection ring 31 and the anti-detachment portion 34 can be reduced, thereby increasing the service life.

[0065] For example, in some embodiments, the gasket 35 can be made of polytetrafluoroethylene. Polytetrafluoroethylene is resistant to acid, alkali, and various organic solvents, has excellent wear resistance and high temperature resistance, is conducive to adapting to complex application environments, and has a long service life. In addition, the surface of the gasket 35 made of polytetrafluoroethylene is smoother, and the effect of reducing rotation resistance is better.

[0066] In some embodiments, Figure 2 and Figure 4 As shown, the gasket 35 includes a gasket body 351 and a plurality of gasket protrusions 352. The gasket body 351 is annular, and the gasket protrusions 352 are arranged on the inner circumferential surface of the gasket body 351, and the plurality of gasket protrusions 352 are spaced apart and distributed along the circumferential direction of the gasket body 351. For example, the gasket protrusions 352 can be two, three, four or more. The gasket 35 is matched with the first connecting pipe 11 through the gasket protrusions 352, such as contact matching, which can reduce the contact area between the gasket 35 and the first connecting pipe 11, reduce the friction resistance of rotation, and improve the wear resistance of the gasket 35 to increase the service life.

[0067] According to some embodiments of the present invention, Figure 2 and Figure 4 As shown, the connecting ring 31 includes: a cylinder 311 and an outer protrusion 312. The cylinder 311 is sleeved on the first connecting tube 11 to increase the matching size of the connecting ring 31 and the first connecting tube 11 in the axial direction, thereby improving the matching stability. The outer protrusion 312 is arranged on the outer peripheral surface of the cylinder 311 and abuts against the connecting member 32 to increase the interference between the connecting ring 31 and the connecting member 32, improve the reliability of the limit, and have a better anti-slip effect.

[0068] In some embodiments, continue to refer to Figure 2 and Figure 4 As shown, the connecting ring 31 may further include an inner convex portion 313, which is provided on the inner circumferential surface of the cylinder 311, and the inner convex portion 313 is a plurality of inner convex portions 313 spaced apart and distributed along the circumferential direction of the cylinder 311. For example, the inner convex portions 313 may be two, three, four or more. By providing the inner convex portion 313, the contact area between the connecting ring 31 and the first connecting pipe 11 can be reduced, the friction resistance of the rotation can be reduced, and the wear resistance of the connecting ring 31 can be improved to increase the service life.

[0069] The connection structure between the second spray arm 20 and the connection ring 31 will be described below with reference to the accompanying drawings.

[0070] like Figure 5 and Figure 6 As shown, the second spray arm 20 is provided with a buckle 21, and the buckle 21 is engaged with the connecting ring 31, so that the connecting structure is simple and firm, and easy to assemble and disassemble.

[0071] In some specific embodiments, Figure 6 As shown, the buckle 21 includes an arm 211 and a hook head 212. One end of the arm 211 (eg Figure 6 The upper end shown in FIG. 21 is connected to the second spray arm 20, and the other end of the arm portion 211 (eg Figure 6 ) is provided with a hook head 212, which abuts against the surface of the connecting ring 31 facing away from the second spray arm 20, so that the connecting ring 31 is fixed between the hook head 212 and the second spray arm 20, and the fixation is firm and reliable, and the arm 211 can be deformed to a certain extent, so that the buckle 21 and the connecting ring 31 are easy to disassemble. For example, in an embodiment in which the connecting ring 31 includes a cylinder 311 and an outer protrusion 312, the hook head 212 can abut against the surface of the outer protrusion 312 facing away from the second spray arm 20 (for example Figure 6 The lower surface shown in FIG. 1 abuts against the hook head 212, the interference between the hook head 212 and the connecting ring 31 is larger, the clamping is more secure, and it is helpful to avoid the hook head 212 from contacting the first spray arm 10 to reduce the rotation resistance.

[0072] In addition, according to some embodiments of the present invention, in order to improve the reliability of the connection between the second spray arm 20 and the connecting ring 31, there can be multiple buckles 21, and the multiple buckles 21 are distributed at intervals along the circumference of the connecting ring 31, so as to connect from multiple locations on the circumference of the connecting ring 31. During the operation of the spray arm assembly 100, the buckle 21 is not easy to separate from the connecting ring 31, and the force at various locations on the circumference of the connecting ring 31 is more uniform, thereby making the force on the first spray arm 10 and the second spray arm 20 more uniform, which is beneficial to improving the stability of the rotation of the first spray arm 10 and the second spray arm 20. It should be noted that the number of buckles 21 includes but is not limited to Figure 6 In other embodiments, the number of the buckles 21 may be three, four, five or more.

[0073] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the second spray arm 20 is provided with a pipe joint 22, which passes through the connecting piece 32 and the connecting ring 31 and extends into the first connecting pipe 11 to achieve the connection between the first spray arm 10 and the second spray arm 20, and the pipe joint 22 increases the matching area, which is beneficial to prevent liquid from leaking from the connection between the first spray arm 10 and the second spray arm 20, so that the water discharge of the spray arm assembly 100 is more regular, which is beneficial to improve the washing effect and washing efficiency.

[0074] In addition, in the related art, the spray arm rotates under the drive of the driving assembly so that the water flows through the rotating spray arm for spraying. The spraying structure is complex, the cost is high, and the water flow spraying area is small and uneven.

[0075] In some embodiments of the present invention, Figure 1 As shown, the first spray arm 10 has a first chamber and a first spray hole 101 communicating with the first chamber, and the second spray arm 20 has a second chamber and a second spray hole 201 communicating with the second chamber, and the first chamber and the second chamber are communicated. After entering the spray arm assembly 100, the water can flow into the first chamber and the second chamber, and spray out through the first spray hole 101 and the second spray hole 201 to spray the items to be washed.

[0076] In addition, the first spray hole 101 is used to drive the first spray arm 10 to rotate around the first direction, and the second spray hole 201 is used to drive the second spray arm 20 to rotate around the second direction. In other words, the first spray arm 10 rotates under the action of the water flow sprayed from the first spray hole 101, and the second spray arm 20 rotates under the action of the water flow sprayed from the second spray hole 201, thereby eliminating the driving component in the related art, simplifying the structure of the spray arm assembly 100, and reducing the production cost.

[0077] It should be noted that the opening directions of the plurality of first spray holes 101 disposed on the same side of the rotation axis of the first spray arm 10 may be the same or different, as long as the combined force of the water flows sprayed from the plurality of first spray holes 101 can rotate the first spray arm 10. Similarly, the opening directions of the plurality of second spray holes 201 disposed on the same side of the rotation axis of the second spray arm 20 may be the same or different.

[0078] In some embodiments, the first direction and the second direction may be the same, that is, the first spray arm 10 and the second spray arm 20 have the same rotation direction, which is beneficial to reducing the resistance to the rotation of the first spray arm 10 and the second spray arm 20 .

[0079] In other embodiments, the first direction and the second direction may be opposite, for example, the first spray arm 10 rotates clockwise around the rotation axis, and the second spray arm 20 rotates counterclockwise around the rotation axis. Thus, the first spray arm 10 and the second spray arm 20 can spray and wash the items to be washed from different directions and angles, making the washing more comprehensive and thorough.

[0080] The washing equipment according to the embodiment of the present invention includes the spray arm assembly 100 according to the embodiment of the present invention. Since the spray arm assembly 100 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, the washing equipment according to the embodiment of the present invention can be rotatably sleeved on the first connecting pipe 11 through the connecting ring 31 and the connecting member 32 prevents the connecting ring 31 from coming out, so that the first spray arm 10 and the second spray arm 20 can be rotatably connected reliably, and the connection reliability is not easily affected by rotational wear, and the first spray arm 10 and the second spray arm 20 are detachable, which reduces the difficulty of cleaning and makes the spray arm assembly 100 clean more thoroughly.

[0081] The washing device may be a dishwasher, etc. In some embodiments, the washing device includes a device body having a washing cavity, and the spray arm assembly 100 is located in the washing cavity and may be disposed on the top wall, side wall or bottom wall of the washing cavity.

[0082] A spray arm assembly 100 according to a specific embodiment of the present invention is described in detail below with reference to the accompanying drawings. It should be understood that the following description is only an exemplary illustration and cannot be construed as limiting the invention.

[0083] like Figure 1 and Figure 2 As shown, the spray arm assembly 100 includes a first spray arm 10, a second spray arm 20 and a connecting assembly 30, wherein the first spray arm 10 is located below the second spray arm 20 to form a lower spray arm, the second spray arm 20 is formed as an upper spray arm, and the first spray arm 10 and the second spray arm 20 are rotatable around a vertical axis respectively. The first spray arm 10 has a first chamber and a first spray hole 101 communicating with the first chamber, and the second spray arm 20 has a second chamber and a second spray hole 201 communicating with the second chamber.

[0084] Two buckles 21 are provided on the lower surface of the second spray arm 20. The buckle 21 includes an arm portion 211 and a hook head 212. The upper end of the arm portion 211 is connected to the second spray arm 20. The hook head 212 is provided at the lower end of the arm portion 211 so that the buckle 21 is formed as an inverted buckle.

[0085] The connection assembly 30 includes a connection ring 31, a connection member 32 and a gasket 35. The connection ring 31 includes a cylinder 311 and an outer protrusion 312, and the outer protrusion 312 can be snapped with the buckle 21 to form the connection ring 31 into a snap ring. The connection member 32 includes a second connection pipe 331 and an anti-slip portion 34, and the anti-slip portion 34 is arranged at the upper end of the outer circumference of the second connection pipe 331. The lower part of the outer circumference of the second connection pipe 331 is provided with four limiting matching protrusions 332 (or fixed buckles), so that the connection member 32 is formed into a snap ring block. The first spray arm 10 has a first connection pipe 11 extending upward, and the inner circumference of the first connection pipe 11 is provided with four limiting buckles, and the four limiting buckles are used to buckle with the four fixed buckles in a one-to-one correspondence. The limiting buckle comprises a first limiting protrusion 111, a second limiting protrusion 112 and a third limiting protrusion 113. The second limiting protrusion 112 and the third limiting protrusion 113 are arranged on the lower side of the first limiting protrusion 111 and are spaced apart to define a limiting buckle sink.

[0086] During assembly, the connection assembly 30 can be first fixed to the first spray arm 10. Specifically, after the connection ring 31 and the gasket 35 are sequentially sleeved on the first connection pipe 11, the second connection pipe 331 of the connection member 32 is inserted into the first connection pipe 11, and then the connection member 32 is rotated to make the fixed buckle position screw into the limit buckle position sink of the limit buckle position, and the assembly of the first spray arm 10 is completed. Then, the pipe connector 22 of the second spray arm 20 is inserted into the first connection pipe 11 through the connection member 32, the gasket 35, and the connection ring 31, and the buckle 21 is buckled onto the outer protrusion 312 of the connection ring 31, and the assembly of the entire spray arm assembly 100 is completed. The first spray arm 10 and the second spray arm 20 can be detached and separated for cleaning, and compared with the bearing connection, the connection through the connecting assembly 30 has lower requirements on dimensional accuracy and is not easy to loosen due to long-term movement and wear, or even cause the first spray arm 10 and the second spray arm 20 to separate. This effectively improves the defect of unreliable life of the bearing spray arm in the related technology, and makes the installation of the spray arm assembly 100 more reliable and less costly.

[0087] The gasket 35 and the connecting ring 31 can rotate freely around the first connecting pipe 11, so that the first spray arm 10 and the second spray arm 20 can rotate. The first spray hole 101 above the first spray arm 10 and the second spray hole 201 above the second spray arm 20 are at opposite angles relative to the rotation axis, so that the first spray arm 10 and the second spray arm 20 can move towards each other, that is, the first spray arm 10 and the second spray arm 20 can move in both directions.

[0088] Other structures and operations of the washing device according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0089] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] In the description of this specification, the description with reference to the terms "embodiment", "specific embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0091] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A spray arm assembly, characterized in that: include: a first spray arm and a second spray arm, wherein the first spray arm is provided with a first connecting pipe; A connection component, the connection component comprising: a connecting ring, the connecting ring being rotatably sleeved on the first connecting pipe, the second spray arm being detachably connected to the connecting ring; a connecting piece, the connecting piece being connected to the first connecting pipe and being adapted to stop the connecting ring to prevent the connecting ring from falling out of the first connecting pipe; The connecting piece comprises: a connecting portion, the connecting portion being detachably connected to the first connecting pipe; an anti-slip portion, the anti-slip portion being arranged on the outer peripheral surface of the connecting portion and being located on a side of the connecting ring close to the second spray arm, the maximum dimension of the anti-slip portion along the radial direction of the connecting ring being larger than the inner diameter of the connecting ring; The connecting ring comprises: A cylinder, wherein the cylinder is sleeved on the first connecting pipe; An outer convex portion, the outer convex portion is arranged on the outer peripheral surface of the cylinder and abuts against the connecting member; The second spray arm is provided with a buckle, and the buckle is buckled with the connecting ring; The buckle includes an arm and a hook head, one end of the arm is connected to the second spray arm, the other end of the arm is provided with the hook head, and the hook head abuts against a surface of the connecting ring facing away from the second spray arm.

2. The spray arm assembly according to claim 1, characterized in that: The anti-slip portion is an annular rib extending around the connecting portion, or the anti-slip portion includes a plurality of protrusions distributed along the circumference of the connecting portion.

3. The spray arm assembly according to claim 1, characterized in that: The connecting part includes a second connecting tube, the second connecting tube is inserted into the first connecting tube, the first connecting tube is provided with a first limiting protrusion, the second connecting tube is provided with a limiting matching protrusion, and the first limiting protrusion is located on a side of the limiting matching protrusion close to the anti-slip part.

4. The spray arm assembly according to claim 3, characterized in that: The first spray arm is rotatable, and a second limiting protrusion is provided on a side of the first limiting protrusion facing the limiting matching protrusion, and the second limiting protrusion is located at a rear side of the limiting matching protrusion along the rotation direction of the first spray arm.

5. The spray arm assembly according to claim 4, characterized in that: A third limiting protrusion is also provided on the side of the first limiting protrusion facing the limiting matching protrusion, and the third limiting protrusion is located on the front side of the limiting matching protrusion along the rotation direction of the first spray arm, and the height of the third limiting protrusion protruding from the first limiting protrusion is less than the height of the second limiting protrusion protruding from the first limiting protrusion.

6. The spray arm assembly according to claim 1, characterized in that: The connection component also includes: A washer is rotatably sleeved on the first connecting pipe and is located between the connecting ring and the anti-detachment portion.

7. The spray arm assembly according to claim 6, characterized in that: The gasket is made of polytetrafluoroethylene.

8. The spray arm assembly according to claim 6, characterized in that: The gasket comprises a gasket body and a plurality of gasket protrusions, wherein the gasket protrusions are arranged on the inner circumferential surface of the gasket body and are distributed at intervals along the circumferential direction of the gasket body.

9. The spray arm assembly according to claim 1, characterized in that: The connecting ring also includes: The inner convex part is arranged on the inner circumferential surface of the cylinder, and the inner convex part is a plurality of parts distributed at intervals along the circumferential direction of the cylinder.

10. The spray arm assembly according to claim 1, characterized in that: There are a plurality of buckles, and the buckles are distributed at intervals along the circumference of the connecting ring.

11. The spray arm assembly according to claim 1, characterized in that: The second spray arm is provided with a pipe joint, and the pipe joint passes through the connecting piece and the connecting ring and extends into the first connecting pipe.

12. The spray arm assembly according to claim 1, characterized in that: The first spray arm has a first chamber and a first spray hole communicating with the first chamber, and the second spray arm has a second chamber communicating with the first chamber and a second spray hole communicating with the second chamber. The first spray hole is used to drive the first spray arm to rotate around a first direction, and the second spray hole is used to drive the second spray arm to rotate around a second direction. The first direction is the same as or opposite to the second direction.

13. The spray arm assembly according to any one of claims 1 to 12, characterized in that: The first spray arm is communicated with the second spray arm, and one of the first spray arm and the second spray arm is communicated with a water inlet pipe.

14. A washing device, characterized in that: Comprising a spray arm assembly according to any one of claims 1-13.

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