Spraying arm and dish washing machine

Abstract

The utility model provides a spraying arm and a dish washing machine, and belongs to the technical field of household appliances. The spraying arm comprises at least one first pipe fitting and a second pipe fitting detachably connected with the first pipe fitting, the first pipe fitting is provided with a plurality of spraying holes, and one end of the first pipe fitting is provided with a first thread and at least one first limiting part; and one end of the second pipe fitting is provided with a second thread matched with the first thread and a second limiting part matched with the first limiting part, and when the first thread and the second thread are connected in place, the first limiting part and the second limiting part are connected in an inserted mode, and the second limiting part limits the first limiting part.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, particularly relates to a spray arm and dish washing machine. BACKGROUND

[0002] The dish washing machine usually achieves the purpose of cleaning the pollutants on tableware under the scouring action of the spray water column, in combination with auxiliary means such as washing consumables and heating.

[0003] The existing dish washing machine spray arm is formed by inserting and assembling multiple parts to achieve the diversity of the spray effect, but due to the influence of water pressure and centrifugal force during rotation, the two components are prone to falling off and loosening after long-term use, which leads to water leakage and affects the cleaning effect of the dish washing machine. SUMMARY

[0004] The utility model discloses a spray arm, which realizes the locking of the connection between the first pipe fitting and the second pipe fitting, prevents the first pipe fitting from rotating relative to the second pipe fitting under the action of water pressure or centrifugal force, and thus improves the cleaning effect of the dish washing machine.

[0005] To achieve the purpose of the utility model, the utility model adopts the following technical scheme:

[0006] According to one aspect of the utility model, a spray arm is provided, which includes at least one first pipe fitting and a second pipe fitting detachably connected with the first pipe fitting, the first pipe fitting has multiple spray holes, one end of the first pipe fitting is provided with a first thread and at least one first limiting part, one end of the second pipe fitting is provided with a second thread matched with the first thread and a second limiting part matched with the first limiting part, when the first thread and the second thread are connected in place, the first limiting part and the second limiting part are inserted, and the second limiting part limits the first limiting part.

[0007] According to one embodiment of the utility model, the first limiting part is one of a groove and a first protruding part, the second limiting part is the other of the groove and the first protruding part, and when the first thread and the second thread are connected in place, the first protruding part is inserted into the groove.

[0008] According to one embodiment of the utility model, the outer side wall of the first pipe fitting is provided with a second protruding part, and the groove is located on the second protruding part.

[0009] According to one embodiment of the utility model, the first pipe fitting and the second pipe fitting are both plastically deformable, or the first protruding part is elastically deformable.

[0010] According to one embodiment of the utility model, the outer side wall of the groove has a guide surface, and the guide surface is configured to guide the first protruding part into the groove.

[0011] According to an embodiment of the present application, the recess and the first protruding part are both two, the two recesses are respectively located at the two radial ends of the first pipe, and the two first protruding parts are respectively located at the two radial ends of the second pipe.

[0012] According to an embodiment of the present application, the first pipe is provided with an annular step close to the first thread, the recess is located between the annular step and the first thread, and when the first thread and the second thread are connected in place, the annular step abuts against one end of the second pipe.

[0013] According to an embodiment of the present application, the caliber between the second thread and the free end of the second pipe gradually expands, and the first protruding part is located between the second thread and the free end of the second pipe.

[0014] According to an embodiment of the present application, the first pipe is two, and the two ends of the second pipe are both provided with a second thread and a second limiting part, and the two first pipes are detachably installed at the two ends of the second pipe.

[0015] According to an embodiment of the present application, the outer side wall of the second pipe is provided with a first transmission part, and the first transmission part is in transmission connection with the driving device to drive the spray arm to rotate.

[0016] The utility model discloses still disclose a kind of dishwashers, including the spray arm of above.

[0017] One embodiment in the utility model has the following advantages or beneficial effects:

[0018] The spray arm provided by the utility model comprises at least one first pipe and a second pipe detachably connected with the first pipe, the first pipe is provided with a plurality of spray holes, one end of the first pipe is provided with a first thread and at least one first limiting part, one end of the second pipe is provided with a second thread matched with the first thread and a second limiting part matched with the first limiting part, the first limiting part is inserted into the second limiting part when the first thread and the second thread are connected in place, and the second limiting part limits the first limiting part, so that the first pipe and the second pipe are locked, water leakage caused by rotation of the first pipe relative to the second pipe under the action of water pressure or centrifugal force is prevented, and the cleaning effect of the dishwasher is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and other features and advantages of the present application will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0020] Figure 1 is an exploded view of the spray arm according to an example embodiment.

[0021] Figure 2 is a perspective view of the first pipe according to an example embodiment.

[0022] Figure 3 is Figure 1 An enlarged view of part A shown.

[0023] Figure 4 is Figure 1 An enlarged view of part B shown.

[0024] Figure 5 is a sectional view of a spray arm according to an exemplary embodiment.

[0025] Figure 6 is a C-C direction sectional view of a spray arm according to an exemplary embodiment.

[0026] Wherein, the reference signs are explained as follows:

[0027] 1, first pipe; 11, spray hole; 12, first thread; 13, first limiting part; 14, second protruding part; 141, guide surface; 15, annular step; 2, second pipe; 21, second thread; 22, second limiting part; 23, first transmission part. DETAILED DESCRIPTION

[0028] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings; however, the example embodiments can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus description of the same will be simplified or omitted.

[0029] The terms "one", "a", "an", "the", and "said" are used to indicate one or more of something; the terms "comprise", "comprises", "comprising" and "including" are used to mean that something can be included, but not to the exclusion of something else; the term "consisting of" is used to mean that something is inclusive, but not to the exclusion of something else.

[0030] As Figures 1-6 shown, the spray arm of the embodiment of the present application comprises at least one first pipe 1 and a second pipe 2 detachably connected with the first pipe 1, the first pipe 1 has a plurality of spray holes 11, and one end of the first pipe 1 is provided with a first thread 12 and at least one first limiting part 13.

[0031] One end of the second pipe fitting 2 has a second thread 21 matched with the first thread 12 and a second limiting part 22 matched with the first limiting part 13, when the first thread 12 and the second thread 21 are connected, the first limiting part 13 is inserted into the second limiting part 22, and the second limiting part 22 limits the first limiting part 13, so that the first pipe fitting 1 and the second pipe fitting 2 are locked, the first pipe fitting 1 is prevented from rotating relative to the second pipe fitting 2 under the action of water pressure and centrifugal force, water leakage is avoided, and the cleaning effect of the dishwasher is improved.

[0032] For example, the first thread 12 is an external thread, and the second thread 21 is an internal thread; or the first thread 12 is an internal thread, and the second thread 21 is an external thread.

[0033] As shown in Figures 2-3 In a preferred embodiment of the present application, the first limiting part 13 is one of a groove and a first protruding part, as shown in Figure 4 、 6 The second limiting part 22 is the other one of the groove and the first protruding part, when the first thread is connected to the second thread, the first protruding part is inserted into the groove, the two side walls of the groove are respectively in abutment with the two side walls of the first protruding part, and the rotating direction of the first protruding part is limited.

[0034] As shown in Figure 2 、 3 , 6, in a preferred embodiment of the present application, the outer side wall of the first pipe fitting 1 is provided with a second protruding part 14, the groove is located on the second protruding part 14, the first pipe fitting 1 and / or the second pipe fitting 2 is made of plastic material, the first pipe fitting 1 and / or the second pipe fitting 2 can be plastically deformed, when the first protruding part is in the process of entering the groove, the free end of the first protruding part is in frictional contact with the second protruding part 14, and the extrusion force is applied to each other, so that the first pipe fitting 1 and / or the second pipe fitting 2 is plastically deformed, and the first protruding part can be inserted into the groove.

[0035] During the process of inserting the first protruding part into the groove, sufficient installation torque needs to be applied to the first pipe fitting 1, and during the process of separating the first protruding part from the groove, sufficient torque in the disassembly direction also needs to be applied to the first pipe fitting 1, so as to increase the friction force during disassembly, and prevent the first pipe fitting 1 from rotating relative to the second pipe fitting 2 due to the action of water pressure or centrifugal force.

[0036] Of course, the first pipe fitting 1 and the second pipe fitting 2 are not limited to plastic deformation, but can also be elastically deformed, and the material of the first pipe fitting 1 and the second pipe fitting 2 can be selected by those skilled in the art according to actual needs.

[0037] As shown in Figure 6As shown, in a preferred embodiment of this utility model, the sidewall of the second protrusion 14 has a guide surface 141, which is configured to guide the first protrusion into the groove to avoid jamming and preventing the first protrusion from entering the groove. When the first protrusion slides along the guide surface, the second tube 2 undergoes synchronous plastic deformation.

[0038] like Figure 3 , 4 As shown in Figures 6 and 7, in a preferred embodiment of this utility model, there are two first protrusions and two second protrusions 14. The two second protrusions 14 are located at the radial ends of the first pipe 1, and the two first protrusions are located at the radial ends of the second pipe 2. When the first protrusions move along the guide surface, the port of the second pipe 2 is stretched and deformed in the radial direction.

[0039] like Figures 1-3 As shown, in a preferred embodiment of the present invention, the first pipe 1 is provided with an annular step 15 near the first thread 12, and the second protrusion 14 is located between the annular step 15 and the first thread. When the first thread 12 and the second thread 21 are connected in place, the first protrusion is inserted into the groove, and the annular step abuts against one end of the second pipe 2, so that the first pipe 1 cannot continue to rotate in the installation direction.

[0040] like Figure 4 As shown, in a preferred embodiment of the present invention, the diameter of the second pipe 2 gradually increases from the second thread to the free end of the second pipe 2, and the wall thickness of the second pipe 2 is such that the first protrusion is located between the second thread and the free end of the second pipe 2.

[0041] like Figure 1 , 5 As shown, in a preferred embodiment of this utility model, there are two first pipe fittings 1, and both ends of the second pipe fitting 2 are provided with second threads 21 and second limiting portions 22. The two first pipe fittings 1 are detachably installed at both ends of the second pipe fitting 2. For example, as... Figure 5 As shown, one of the first pipe fittings 1 is a semi-closed structure with an opening at one end, the other first pipe fitting 1 has both ends connected, and the other first pipe fitting 1 has both ends connected to the second pipe fitting 2 and the water supply pipe, respectively.

[0042] In a preferred embodiment of the present invention, a first transmission member 23 is provided on the outer wall of the second pipe 2, and the first transmission member 23 is connected to the driving device to drive the spray arm to rotate.

[0043] For example, the first transmission component 23 is a first gear, the driving device is a motor, and the motor shaft has a second gear that meshes with the first gear. This drives the second pipe component 2 to rotate, thereby achieving a variety of cleaning angles for the spray arm.

[0044] For example, the driving device is a T-shaped pipe, the upper end of the T-shaped pipe is provided with a plurality of water outlets at an angle, the lower end of the T-shaped pipe is vertically provided with a water inlet interface rotatably connected with the water supply pipe, the water inlet interface is provided with a second transmission member matched with the first transmission member 23, and the reaction force generated by water sprayed from the water outlet of the T-shaped pipe enables the T-shaped pipe to rotate to drive the second pipe 2 to rotate, thereby realizing the cleaning angle of the rich spray arm.

[0045] For example, the second transmission member is a gear or a variable pitch helical rib.

[0046] Of course, the first transmission member and the second transmission member are not limited to gears, and a person skilled in the art can select the type of transmission member according to actual needs.

[0047] The utility model also provides a kind of dishwasher, including the spray arm of above-mentioned. The dishwasher of the utility model is due to using the spray arm described above, realize the locking of the first pipe 1 and the second pipe 2 connection, prevent the first pipe 1 from rotating relative to the second pipe 2 under the action of water pressure or centrifugal force and cause water leakage, further realize the cleaning effect of promotion dishwasher.

[0048] For example, the dishwasher is provided with a mounting bracket, and the first pipe 1 is rotatably arranged on the mounting bracket and is in communication with the water supply pipe of the dishwasher.

[0049] In the embodiments of the present application, the term "a plurality of" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integrally connected. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0050] In the description of the embodiments of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as a limitation on the embodiments of the present application. The device or unit indicated must have a specific direction, a specific orientation and operation, therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0051] In the description of the present application, the terms "one embodiment", "one preferred embodiment" and the like mean 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 application. In the present application, the illustrative description 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.

[0052] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A spray arm, characterized in that, The spray arm comprises at least one first pipe (1) and a second pipe (2) detachably connected with the first pipe (1), the first pipe (1) has a plurality of spray holes (11), one end of the first pipe (1) is provided with a first thread (12) and at least one first limiting part (13), one end of the second pipe (2) has a second thread (21) matched with the first thread (12) and a second limiting part (22) matched with the first limiting part (13), when the first thread (12) and the second thread (21) are connected in place, the first limiting part (13) is inserted into the second limiting part (22), and the second limiting part (22) limits the first limiting part (13).

2. The spray arm of claim 1, wherein The first limiting part (13) is one of a groove and a first protruding part, the second limiting part (22) is the other of a groove and a first protruding part, when the first thread and the second thread are connected in place, the first protruding part is inserted into the groove.

3. The spray arm of claim 2, wherein, An outer side wall of the first pipe (1) is provided with a second protruding part (14), the groove is located on the second protruding part (14), and the first pipe (1) and / or the second pipe (2) can be plastically deformed.

4. The spray arm of claim 3, wherein, A side wall of the second protruding part (14) has a guide surface (141), and the guide surface (141) is configured to guide the first protruding part into the groove.

5. The spray arm of claim 3, wherein, When the second protruding part (14) is two, the two second protruding parts (14) are respectively located at two radial ends of the first pipe (1).

6. The spray arm of claim 3, wherein, The first pipe (1) is provided with an annular step (15) close to the first thread (12), the groove is located between the annular step (15) and the first thread, and when the first thread (12) and the second thread (21) are connected in place, the annular step (15) abuts against one end of the second pipe (2).

7. The spray arm of claim 6, wherein, A caliber between the second thread and a free end of the second pipe (2) gradually expands, and the first protruding part is located between the second thread and the free end of the second pipe (2).

8. A spray arm according to any one of claims 3 to 7, wherein, The first pipe (1) is two, and the second pipe (2) is provided with a second thread (21) and a second limiting part (22) at two ends, and the two first pipes (1) are detachably installed at the two ends of the second pipe (2).

9. The spray arm of claim 1, wherein, An outer side wall of the second pipe (2) is provided with a first transmission part (23), and the first transmission part (23) is in transmission connection with a driving device to drive the spray arm to rotate.

10. A dishwasher, characterized in that The spray arm comprises any one of claims 1-9. The spray arm comprises any one of claims 1-9.

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