Spraying arm of dish washing machine and dish washing machine

Abstract

The utility model discloses a dish-washing machine spraying arm and a dish-washing machine, and the spraying arm comprises a first shell, a second shell, a spraying arm and a spraying arm, a decorative sheet mounted on the first housing; the first shell is provided with a decoration groove matched with the decoration piece, and the decoration piece is located in the decoration groove. The decorative sheet is arranged as an independent component and then is clamped and mounted on the first shell, so that the attractive appearance can be achieved, and the injection molding quality of the first shell is also ensured. The decoration groove is formed in the first shell, and the decoration piece is installed in the decoration groove, so that convenience of installation operation of the decoration piece and stability of the decoration piece after fixation are facilitated.

Description

Technical Field

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

[0002] At present, with the continuous improvement of people's quality of life, dishwashers have gradually become a commonly used household appliance, mainly used for cleaning and drying dishes and other tableware. Using a dishwasher to wash tableware can greatly reduce tedious manual labor. You only need to put the tableware to be washed into the dishwasher, turn on the faucet, press a button, and you can do other things with confidence, because there is no need for anyone to wait during the washing process, and the operation can be completed automatically. The dishwasher reduces people's labor intensity and improves work efficiency.

[0003] In order to achieve a more ideal cleaning effect, the existing spray device installed in the dishwasher is generally a rotatable spray arm with multiple spray holes. The spray arm is rotatably connected to the inner tank body, and the spray arm is connected to the water path. The water in the water path is sprayed out through the spray holes on the spray arm to clean the tableware placed in the inner tank.

[0004] Consumers are pursuing a higher level of product appearance and performance. Currently, two-color molding has emerged. During manufacturing, two-color effects are achieved by sequentially injecting different colors of thermoplastic materials and base hard materials. However, if two-color injection molding is used on the spray arm, if the spray hole position and structure are not properly processed, the two materials will not be able to be combined properly, resulting in problems such as the two-color material falling off. At the same time, hot water flowing through the spray hole can easily cause the spray hole structure to deform, change the water spray volume and direction of the spray arm, and cause problems such as reduced dishwasher performance and inability to clean dishes.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] The utility model aims at the above problems in the prior art and provides a spray arm of a dishwasher. The spray arm has a beautiful appearance by arranging a decorative sheet. The injection molding quality of the first shell is ensured by installing and fixing the decorative sheet.

[0007] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0008] A spray arm of a dishwasher, comprising:

[0009] A first shell having a plurality of spray holes formed thereon;

[0010] A decorative sheet mounted on the first shell;

[0011] A decorative groove matching the decorative sheet is provided on the first shell, and the decorative sheet is located in the decorative groove.

[0012] In some embodiments of the present application, a snap-fit ​​fixing structure is provided between the decorative sheet and the decorative groove, and the snap-fit ​​fixing structure is a buckle provided on one of the decorative sheet and the decorative groove, and a slot provided on the other of the decorative sheet and the decorative groove, and the buckle and the slot are matched with each other.

[0013] In some embodiments of the present application, a snap-fitting opening is provided on the buckle, and a snap-fitting protrusion matching the snap-fitting opening is provided at the snap-fitting slot, and the snap-fitting protrusion is snap-fitted into the snap-fitting opening.

[0014] In some embodiments of the present application, a buckle extending downward is provided on the decorative sheet, a snap-fitting opening is provided on the buckle, and the buckle groove is provided at the bottom of the decorative groove.

[0015] In some embodiments of the present application, the upper end surface of the latching protrusion is tilted downward in a direction close to the buckle.

[0016] In some embodiments of the present application, the decorative sheet is in a circular ring shape, and the upper end surface of the decorative sheet is inclined upward in an inward direction.

[0017] In some embodiments of the present application, a circular center portion located inside the decorative sheet is provided on the first shell, and a spacing notch is provided on the outer side of the upper end of the circular center portion.

[0018] In some embodiments of the present application, a second shell is further included that is snap-fitted with the first shell, and the first shell and the second shell are snap-fitted to form a spray chamber and an outer chamber surrounded by the outside of the spray chamber.

[0019] In some embodiments of the present application, the first shell is provided with an upper outer edge and an upper inner edge extending downward, the decorative groove is located between the upper outer edge and the upper inner edge and is arranged to penetrate up and down, and the buckle extends into the outer cavity.

[0020] In some embodiments of the present application, a downwardly extending dimension of the upper outer edge is greater than a downwardly extending dimension of the upper inner edge.

[0021] In some embodiments of the present application, the second shell is provided with a lower outer edge that is sealed to match the upper outer edge, and a lower inner edge that is sealed to match the upper inner edge.

[0022] Based on the spray arm of the dishwasher described above, the utility model further provides a dishwasher having the spray arm described above, wherein a decorative sheet is provided to achieve a beautiful appearance; and the injection molding quality of the first shell is ensured by installing and fixing the decorative sheet.

[0023] A dishwasher comprises an inner container and the above-mentioned spray arm which is rotatably located in the inner container.

[0024] Compared with the prior art, the advantages and positive effects of the utility model are: the decorative sheet is set as a separate component, and then snap-fitted and installed on the first shell, which can achieve a beautiful appearance and ensure the injection molding quality of the first shell. A decorative groove is opened on the first shell, and the decorative sheet is installed in the decorative groove, which is conducive to the convenience of the installation operation of the decorative sheet and the stability after fixation.

[0025] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a structural schematic diagram of an embodiment of a spray arm of a dishwasher proposed by the utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of the explosion structure;

[0029] Figure 3 for Figure 2 An enlarged structural schematic diagram of the first shell;

[0030] Figure 4 for Figure 3 A structural diagram from a middle upward viewing angle;

[0031] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of the A area in the middle;

[0032] Figure 6 is a schematic structural diagram of the first shell;

[0033] Figure 7 It is a structural schematic diagram of a decorative sheet;

[0034] Figure 8 for Figure 1 A cross-sectional structural schematic diagram of;

[0035] Fig. 9 for Figure 8 Schematic diagram of the enlarged structure of the middle B area;

[0036] Wherein, the spray arm 100; the spray chamber 101; the outer chamber 102;

[0037] First housing 10; spray hole 11; decorative groove 12; clamping groove 121; clamping protrusion 122; circular center portion 13; spacing notch 131; upper outer edge 14; upper inner edge 15;

[0038] Second housing 20; lower outer edge 24; lower inner edge 25;

[0039] Decorative piece 30 ; buckle 31 ; snap-fit ​​opening 311 . DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0041] In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the positional relationships shown in the accompanying drawings, with the direction close to the axis of the spray arm being "inside" and the opposite being "outside". The terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials. Example

[0045] See also Figure 1-Figure 9 , is an embodiment of a spray arm of a dishwasher proposed by the utility model, A spray arm 100 of a dishwasher, comprising: a first shell 10, a second shell 20 and a decorative sheet 30, the first shell and the second shell are buckled and sealed, and a plurality of spray holes 11 are provided on the first shell 10. The decorative sheet 30 is installed and fixed on the first shell 10, and a decorative groove 12 matching the decorative sheet 30 is provided on the first shell 10, and the decorative sheet 30 is located in the decorative groove 12. The decorative sheet 30 is set as a separate component, and then snap-fitted and installed on the first shell 10, which can achieve a beautiful appearance and ensure the injection molding quality of the first shell 10. The decorative groove 12 is provided on the first shell 10, and the decorative sheet 30 is installed in the decorative groove 12, which is conducive to the convenience of the installation operation of the decorative sheet 30 and the stability after fixation.

[0046] In some embodiments of the present application, in order to simplify the installation operation of the decorative sheet 30, a snap-fit ​​fixing structure is provided between the decorative sheet 30 and the decorative groove 12. The snap-fit ​​fixing structure is a snap 31 provided on the decorative sheet 30 and a slot 121 provided on the decorative groove 12, and the snap 31 and the slot 121 are matched. A plurality of snaps 31 are provided on the decorative sheet 30, and a plurality of matching slots 121 are provided on the decorative groove 12. When installing the decorative sheet 30, the snap 31 is extended into the slot 121 to achieve snap-fit ​​fixing, which is conducive to simple installation operation and stability after fixing.

[0047] In some other embodiments of the present application, the snap-fit ​​fixing structure may also be a plurality of slots provided on the decorative sheet 30 or a plurality of buckles provided on the decorative slot 12 .

[0048] In some embodiments of the present application, a snap-fitting opening 311 is provided on the snap-fitting opening 311, and a snap-fitting protrusion 122 matching the snap-fitting opening 311 is provided at the snap-fitting slot 121, and the snap-fitting protrusion 122 is snap-fitted into the snap-fitting opening 311. The snap-fitting 31 can be relatively deformed so that the snap-fitting protrusion 122 snaps into the snap-fitting opening 311, which is used to limit the degree of freedom of the snap-fitting 31 in the upward direction; and the snap-fitting slot 121 is provided to limit the degree of freedom of the snap-fitting 31 in the horizontal direction, that is, the degree of freedom of movement such as forward and backward, left and right, or rotation.

[0049] In some embodiments of the present application, the decorative sheet 30 is annular, and a plurality of buckles 31 extending downward are provided on the circumference of the decorative sheet 30, a snap-fitting opening 311 is provided on the buckle 31, and a snap-fitting slot 121 is provided at the bottom of the decorative groove 12. When the decorative sheet 30 is installed, it moves downward, and the buckle 31 is aligned with the decorative groove 12, and the buckle 31 extends downward into the decorative groove 12; and the buckle 31 is snap-fitted and fixed with the snap-fitting protrusion 122.

[0050] In some embodiments of the present application, the upper end surface of the latch 122 is tilted downward in a direction close to the buckle, so as to guide the engagement between the buckle 31 and the latch 122; so that after the buckle 31 extends downward into the decorative groove 12, the lower end of the buckle 31 moves along the upper end surface of the latch 122, so that the lower end of the buckle 31 is moved and deformed in a direction away from the buckle 122, and then the buckle 122 reaches the engagement opening 311, and the buckle 31 is reset.

[0051] In some embodiments of the present application, the decorative sheet 30 is annular, the decorative groove 12 is an annular groove, and the upper end surface of the decorative sheet 30 is tilted upward in the inward direction, that is, the height of the inner circle of the decorative sheet 30 is greater than the height of the outer circle, which is conducive to the smoothness and beauty of the appearance and the improvement of the appearance quality. The first shell 10 is provided with a circular center portion 13 located on the inner side of the decorative sheet 30, and the decorative groove 12 is arranged around the outer side of the circular center portion 13. In order to ensure the aesthetics, it is necessary to set the inner side of the decorative sheet 30 and the outer side of the circular center portion 13 flush, and make the gap between them as small as possible, which requires high manufacturing precision and increases the manufacturing cost. Therefore, a spacing notch 131 is provided on the outer side of the upper end of the circular center portion 13, so that the decorative sheet 30 and the upper end of the circular center portion 13 that are set in a set are not in contact, and the spacing notch 131 is used to achieve the spacing setting, so that the requirements for precision of the cooperation between the two are reduced, and the setting of the appearance structure is increased, which is conducive to improving the appearance quality and reducing the demand for manufacturing precision.

[0052] In some embodiments of the present application, the spray arm 100 further includes a second shell 20 that is buckled with the first shell 10, and the first shell 10 and the second shell 20 are buckled to form a spray chamber 101 and an outer chamber 102 that is surrounded outside the spray chamber. By setting the outer chamber 102 outside the spray chamber 101, a double-layer chamber setting of the spray arm 100 is achieved, which is conducive to reducing the volume of the spray chamber 101, ensuring the pressure of the water flow reaching the spray chamber 101, and ensuring the impact force of the spray water flow; and the double-layer chamber setting, that is, having a double-layer sealing connection, is conducive to increasing the safety of the seal.

[0053] In some embodiments of the present application, the first shell 10 is provided with an upper outer edge 14 and an upper inner edge 15 extending downward, and the second shell 20 is provided with a lower outer edge 24 that matches and seals with the upper outer edge 14, and a lower inner edge 25 that matches and seals with the upper inner edge 15. The upper outer edge 14 and the lower outer edge 24 are sealed together, and the upper inner edge 15 and the lower inner edge 25 are sealed together, and the upper inner edge 15 and the lower inner edge 25 are surrounded to form a spray chamber 101.

[0054] In some embodiments of the present application, the downward extension dimension of the upper outer edge 14 is greater than the downward extension dimension of the upper inner edge 15. In order to achieve docking and sealing fixation, the upward extension dimension of the lower outer edge 24 is greater than the upward extension dimension of the lower inner edge 25. After the upper outer edge 14 and the lower outer edge 24 are sealed and fixed, an outer seam is formed. After the upper inner edge 15 and the lower inner edge 25 are sealed and fixed, an inner seam is formed. That is, the outer seam and the inner seam are in different upper and lower planes, which is beneficial to increase the firmness of the first shell 10 and the second shell 20 after sealing and fixing; and the plane where the outer seam is located is located below the inner seam, so that the outer seam is not obvious in appearance, which is beneficial to increase the quality of appearance.

[0055] In some embodiments of the present application, the decorative groove 12 is located between the upper outer edge 14 and the upper inner edge 15, the decorative groove 12 is arranged to be through-connected from top to bottom, the buckle 31 extends into the outer cavity 102, and the clamping protrusion 122 is located in the outer cavity 102. By setting the decorative groove 12 to be through-connected from top to bottom, it is beneficial to increase the size of the buckle 31 in the up-down direction, ensure the deformation capacity of the buckle 31, and facilitate the deformation of the buckle 31 during the assembly process; and the outer cavity 102 is arranged inside the outer side of the spray cavity 101, and the decorative groove 12 can be arranged to be through-connected from top to bottom. Example

[0056] This embodiment is a dishwasher, which has the above-mentioned spray arm 100, which is rotatably arranged in the inner tank. Figure 1-Figure 9 As shown, the spray arm 100 includes: a first shell 10, a second shell 20 and a decorative sheet 30, the first shell and the second shell are buckled and sealed, and a plurality of spray holes 11 are provided on the first shell 10. The decorative sheet 30 is fixedly mounted on the first shell 10, and a decorative groove 12 matching the decorative sheet 30 is provided on the first shell 10, and the decorative sheet 30 is located in the decorative groove 12. The decorative sheet 30 is set as a separate component, and then snap-fitted and installed on the first shell 10, which can not only achieve a beautiful appearance, but also ensure the injection molding quality of the first shell 10. The decorative groove 12 is provided on the first shell 10, and the decorative sheet 30 is installed in the decorative groove 12, which is conducive to the convenience of the installation operation of the decorative sheet 30 and the stability after fixation.

[0057] In some embodiments of the present application, in order to simplify the installation operation of the decorative sheet 30, a snap-fit ​​fixing structure is provided between the decorative sheet 30 and the decorative groove 12. The snap-fit ​​fixing structure is a snap 31 provided on the decorative sheet 30 and a slot 121 provided on the decorative groove 12, and the snap 31 and the slot 121 are matched. A plurality of snaps 31 are provided on the decorative sheet 30, and a plurality of matching slots 121 are provided on the decorative groove 12. When installing the decorative sheet 30, the snap 31 is extended into the slot 121 to achieve snap-fit ​​fixing, which is conducive to simple installation operation and stability after fixing.

[0058] In some other embodiments of the present application, the snap-fit ​​fixing structure may also be a plurality of slots provided on the decorative sheet 30 or a plurality of buckles provided on the decorative slot 12 .

[0059] In some embodiments of the present application, a snap-fitting opening 311 is provided on the snap-fitting opening 311, and a snap-fitting protrusion 122 matching the snap-fitting opening 311 is provided at the snap-fitting slot 121, and the snap-fitting protrusion 122 is snap-fitted into the snap-fitting opening 311. The snap-fitting 31 can be relatively deformed so that the snap-fitting protrusion 122 snaps into the snap-fitting opening 311, which is used to limit the degree of freedom of the snap-fitting 31 in the upward direction; and the snap-fitting slot 121 is provided to limit the degree of freedom of the snap-fitting 31 in the horizontal direction, that is, the degree of freedom of movement such as forward and backward, left and right, or rotation.

[0060] In some embodiments of the present application, the decorative sheet 30 is annular, and a plurality of buckles 31 extending downward are provided on the circumference of the decorative sheet 30, a snap-fitting opening 311 is provided on the buckle 31, and a snap-fitting slot 121 is provided at the bottom of the decorative groove 12. When the decorative sheet 30 is installed, it moves downward, and the buckle 31 is aligned with the decorative groove 12, and the buckle 31 extends downward into the decorative groove 12; and the buckle 31 is snap-fitted and fixed with the snap-fitting protrusion 122.

[0061] In some embodiments of the present application, the upper end surface of the latch 122 is tilted downward in a direction close to the buckle, so as to guide the engagement between the buckle 31 and the latch 122; so that after the buckle 31 extends downward into the decorative groove 12, the lower end of the buckle 31 moves along the upper end surface of the latch 122, so that the lower end of the buckle 31 is moved and deformed in a direction away from the buckle 122, and then the buckle 122 reaches the engagement opening 311, and the buckle 31 is reset.

[0062] In some embodiments of the present application, the decorative sheet 30 is annular, the decorative groove 12 is an annular groove, and the upper end surface of the decorative sheet 30 is tilted upward in the inward direction, that is, the height of the inner circle of the decorative sheet 30 is greater than the height of the outer circle, which is conducive to the smoothness and beauty of the appearance and the improvement of the appearance quality. The first shell 10 is provided with a circular center portion 13 located on the inner side of the decorative sheet 30, and the decorative groove 12 is arranged around the outer side of the circular center portion 13. In order to ensure the aesthetics, it is necessary to set the inner side of the decorative sheet 30 and the outer side of the circular center portion 13 flush, and make the gap between them as small as possible, which requires high manufacturing precision and increases the manufacturing cost. Therefore, a spacing notch 131 is provided on the outer side of the upper end of the circular center portion 13, so that the decorative sheet 30 and the upper end of the circular center portion 13 that are set in a set are not in contact, and the spacing notch 131 is used to achieve the spacing setting, so that the requirements for precision of the cooperation between the two are reduced, and the setting of the appearance structure is increased, which is conducive to improving the appearance quality and reducing the demand for manufacturing precision.

[0063] In some embodiments of the present application, the spray arm 100 further includes a second shell 20 that is buckled with the first shell 10, and the first shell 10 and the second shell 20 are buckled to form a spray chamber 101 and an outer chamber 102 that is surrounded outside the spray chamber. By setting the outer chamber 102 outside the spray chamber 101, a double-layer chamber setting of the spray arm 100 is achieved, which is conducive to reducing the volume of the spray chamber 101, ensuring the pressure of the water flow reaching the spray chamber 101, and ensuring the impact force of the spray water flow; and the double-layer chamber setting, that is, having a double-layer sealing connection, is conducive to increasing the safety of the seal.

[0064] In some embodiments of the present application, the first shell 10 is provided with an upper outer edge 14 and an upper inner edge 15 extending downward, and the second shell 20 is provided with a lower outer edge 24 that matches and seals with the upper outer edge 14, and a lower inner edge 25 that matches and seals with the upper inner edge 15. The upper outer edge 14 and the lower outer edge 24 are sealed together, and the upper inner edge 15 and the lower inner edge 25 are sealed together, and the upper inner edge 15 and the lower inner edge 25 are surrounded to form a spray chamber 101.

[0065] In some embodiments of the present application, the downward extension dimension of the upper outer edge 14 is greater than the downward extension dimension of the upper inner edge 15. In order to achieve docking and sealing fixation, the upward extension dimension of the lower outer edge 24 is greater than the upward extension dimension of the lower inner edge 25. After the upper outer edge 14 and the lower outer edge 24 are sealed and fixed, an outer seam is formed. After the upper inner edge 15 and the lower inner edge 25 are sealed and fixed, an inner seam is formed. That is, the outer seam and the inner seam are in different upper and lower planes, which is beneficial to increase the firmness of the first shell 10 and the second shell 20 after sealing and fixing; and the plane where the outer seam is located is located below the inner seam, so that the outer seam is not obvious in appearance, which is beneficial to increase the quality of appearance.

[0066] In some embodiments of the present application, the decorative groove 12 is located between the upper outer edge 14 and the upper inner edge 15, the decorative groove 12 is arranged to be through-connected from top to bottom, the buckle 31 extends into the outer cavity 102, and the clamping protrusion 122 is located in the outer cavity 102. By setting the decorative groove 12 to be through-connected from top to bottom, it is beneficial to increase the size of the buckle 31 in the up-down direction, ensure the deformation capacity of the buckle 31, and facilitate the deformation of the buckle 31 during the assembly process; and the outer cavity 102 is arranged inside the outer side of the spray cavity 101, and the decorative groove 12 can be arranged to be through-connected from top to bottom.

[0067] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A spray arm of a dishwasher, characterized in that: include: A first shell having a plurality of spray holes formed thereon; A decorative sheet mounted on the first shell; A decorative groove matching the decorative sheet is provided on the first shell, and the decorative sheet is located in the decorative groove; A clamping and fixing structure is provided between the decorative sheet and the decorative groove. The decorative sheet is in a circular ring shape, and the upper end surface of the decorative sheet is inclined upward in the inward direction.

2. The spray arm according to claim 1, characterized in that: The snap-fit ​​fixing structure is a buckle provided on one of the decorative sheet and the decorative groove, and a slot provided on the other of the decorative sheet and the decorative groove, and the buckle and the slot are matched with each other.

3. The spray arm according to claim 2, characterized in that: A snap-fitting opening is provided on the snap buckle, and a snap-fitting protrusion matching the snap-fitting opening is provided at the snap-fitting slot, and the snap-fitting protrusion is snap-fitted in the snap-fitting opening.

4. The spray arm according to claim 3, characterized in that: A buckle extending downward is provided on the decorative sheet, and the buckle groove is provided at the bottom of the decorative groove.

5. The spray arm according to claim 3, characterized in that: The upper end surface of the clamping protrusion is tilted downward in a direction close to the buckle.

6. The spray arm according to any one of claims 1 to 5, characterized in that: The first shell is provided with a circular central portion located inside the decorative sheet, and a spacing notch is provided outside the upper end of the circular central portion.

7. The spray arm according to any one of claims 2 to 5, characterized in that: It also includes a second shell that is buckled with the first shell, and the first shell and the second shell are buckled to form a spray chamber and an outer chamber surrounded by the outside of the spray chamber.

8. The spray arm according to claim 7, characterized in that: The first shell is provided with an upper outer edge and an upper inner edge extending downward, the decorative groove is located between the upper outer edge and the upper inner edge and is through-through from top to bottom, and the buckle extends into the outer cavity.

9. A dishwasher, characterized in that: A spray arm according to any one of claims 1 to 8 having an inner container and rotatably located in the inner container.

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