Spray arm assembly and dishwasher

Abstract

The application provides a spray arm assembly and a dishwasher, and relates to the technical field of kitchen appliances. The spray arm assembly comprises: a spray arm body, the spray arm body having a cavity, the spray arm body being provided with a water outlet, a water outlet and a water inlet which respectively communicate with the cavity; the spray arm body is provided with a movable piece at a position corresponding to the water outlet, the movable piece being used for plugging the water outlet when water is supplied to the water inlet, and exposing the water outlet when the water supply to the water inlet is stopped. The dishwasher comprises the spray arm assembly. The application alleviates the technical problems that the water pressure is reduced due to the opening in the middle of the spray arm, or the residual water is easy to cause secondary pollution to tableware due to no opening in the middle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, in particular to a spray arm assembly and a dishwasher. BACKGROUND

[0002] Some existing dishwashers have two to three spray arms, which are middle spray arm, bottom spray arm and top spray arm. The lowest point of the spray arm is generally in the middle position, but the middle position is the place with the largest water pressure. If a hole is directly opened in the middle position, the water pressure will decrease in the middle position, so that the water pressure distributed to the whole spray arm will decrease, thereby affecting the cleaning effect. If no hole is opened in the middle position, there will be residual water in the spray arm. The spray arm is generally installed on a shelf. When the shelf is pulled out, the spray arm will vibrate, so that the residual water in the spray arm will flow out and fall on the already washed and dried tableware, causing secondary pollution of the tableware and reducing the user experience.

[0003] Therefore, it is particularly important to solve the problem of residual water in the spray arm. SUMMARY

[0004] The present application aims to provide a spray arm assembly and a dishwasher to alleviate the technical problems that the water pressure decreases due to the hole opened in the middle of the spray arm, or the residual water in the spray arm easily causes secondary pollution of the tableware due to no hole opened in the middle of the spray arm.

[0005] The present application provides a spray arm assembly, comprising: a spray arm body, the spray arm body having a cavity, the spray arm body being provided with a water outlet, a drain outlet and a water inlet which are respectively communicated with the cavity;

[0006] The spray arm body is provided with a movable part at a position corresponding to the drain outlet, the movable part being used to block the drain outlet when water is supplied to the water inlet, and expose the drain outlet when the water supply to the water inlet is stopped.

[0007] Further, the movable part comprises a bracket and a blocking part;

[0008] The bracket is arranged on the spray arm body, and the blocking part is arranged on the bracket in a deformable and / or movable manner to block or expose the drain outlet.

[0009] Further, the water inlet and the drain outlet are arranged opposite to each other;

[0010] The bracket is arranged in the water inlet, and the blocking part is arranged opposite to the drain outlet.

[0011] Further, the bracket comprises a sleeve and a plurality of clamping structures arranged along the circumference of the sleeve at intervals;

[0012] A plurality of clamping parts are arranged in the water inlet, and the clamping structures are matched with the corresponding clamping parts.

[0013] Further, the outer periphery of the sleeve at the end away from the clamping structure is provided with a limiting structure.

[0014] Further, the limiting structure has a first surface;

[0015] The water inlet of the spray arm body is outwardly convex to form a tubular structure, and the inner wall of the tubular structure is provided with the clamping part;

[0016] When the movable part is inserted into the water inlet, the clamping structure and the corresponding clamping part are clamped with each other, and the first surface abuts against the end surface of the tubular structure.

[0017] Further, the spray arm assembly further comprises a fastener for fixing the spray arm body, and the inner side of the fastener is provided with a blocking ring, and the blocking ring has an opening adapted to be sleeved with the tubular structure.

[0018] Further, the limiting structure has a second surface adapted to abut against the end surface of the blocking ring.

[0019] Further, the blocking part is an elastic sheet, and the middle part of the elastic sheet is connected with the support;

[0020] The area of the elastic sheet is greater than the area of the drain port.

[0021] Further, the drain port is circular or polygonal;

[0022] And / or, the drain port is at least one.

[0023] Further, the distance between the lowest part of the elastic sheet and the upper end of the drain port is S, the radius of the drain port is D1, the radius of the elastic sheet is D2, and S:D1:D2=3:4:5.

[0024] Further, the support comprises a first supporting rod and a plurality of second supporting rods;

[0025] The plurality of second supporting rods are connected to the first end of the first supporting rod and are arranged around the axis of the first supporting rod;

[0026] The elastic sheet is arranged at the second end of the first supporting rod.

[0027] Further, the end surface of the elastic sheet away from the drain port is provided with a fixing groove, and the second end of the first supporting rod is embedded and fixed in the fixing groove.

[0028] Further, the blocking part is rotatably connected with the bracket through a connecting piece.

[0029] Further, the connecting piece is provided with a water blocking piece.

[0030] The connecting piece is in a bent shape, the water blocking piece and the blocking part are respectively located at two end portions of the connecting piece, and the water blocking piece is oppositely arranged with the water inlet.

[0031] Further, the connecting piece comprises a first segment, a second segment and a third segment which are sequentially connected or integrally arranged, the first segment is a straight segment, the second segment is an arc segment, the third segment is an arc segment, the second segment and the third segment are tangent at a connecting position, the blocking part is connected with a free end of the first segment, the water blocking piece is connected with a free end of the third segment, and the second segment is connected with the bracket through a rotating shaft.

[0032] Further, the blocking part is a spherical structure.

[0033] Further, the water blocking piece is a disc structure.

[0034] The present application provides a kind of dish washer, including above-mentioned spray arm assembly.

[0035] Beneficial effects:

[0036] The spray arm assembly provided by the application comprises a spray arm body and a movable element, wherein the spray arm body has a cavity for containing washing water, and a water spraying opening, a water draining opening and a water inlet opening are arranged on the side wall of the cavity and are in communication with the cavity, the water inlet opening is used for injecting washing water into the cavity, the water spraying opening is used for spraying washing water to the dishes to be washed, and the water draining opening is used for draining residual water in the cavity after the operation of the spray arm assembly is completed; further, the movable element is arranged at the water draining opening and can block or expose the water draining opening; specifically, when washing water enters the cavity along the water inlet opening, the water pressure caused by the impact of the washing water on the movable element enables the movable element to be tightly pressed at the water draining opening, so that the water draining opening is blocked, and the washing water in the cavity cannot flow out of the water draining opening but can only be sprayed to the dishes to be washed through the water spraying opening; further, by blocking the movable element at the water draining opening, the problem that the water pressure is affected due to the direct opening in the middle position of the spray arm in the prior art is effectively alleviated; when the injection of washing water into the cavity from the water inlet opening is stopped, the impact pressure from the washing water on the movable element is lost, at this time, the movable element can be separated from the water draining opening, so that the residual water in the cavity is drained through the water draining opening under the action of gravity, the problem that the residual water in the spray arm accidentally drops on the dishes to cause secondary pollution to the dishes is effectively alleviated, and the experience of the user is further improved and the health of the user is ensured.

[0037] The dishwasher provided by the application comprises the spray arm assembly, so that the dishwasher can also achieve the technical advantages and effects of the spray arm assembly, which will not be described herein. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0039] Figure 1 An exploded view of the spray arm assembly in the first form provided by the embodiment of the application;

[0040] Figure 2 A schematic view of the water draining opening of the spray arm assembly in the first form provided by the embodiment of the application in a blocked state;

[0041] Figure 3 A partial enlarged view of position A in FIG. 4; Figure 2

[0042] Figure 4 ​Schematic view of the drain port of the first form of the spray arm assembly provided by the embodiment of the present application in an open state;

[0043] Figure 5 Structure schematic view of one of the supports in the first form of the spray arm assembly provided by the embodiment of the present application; Figure 4 Partial enlarged view at B;

[0044] Figure 6 Structure schematic view of another support in the first form of the spray arm assembly provided by the embodiment of the present application;

[0045] Figure 7 Structure schematic view of another support and the blocking part in the first form of the spray arm assembly provided by the embodiment of the present application;

[0046] Figure 8 Structure schematic view of another support in the first form of the spray arm assembly provided by the embodiment of the present application;

[0047] Figure 9 Exploded view of the second form of the spray arm assembly provided by the embodiment of the present application;

[0048] Figure 10 Schematic view of the drain port of the second form of the spray arm assembly provided by the embodiment of the present application in a blocked state;

[0049] Figure 11 Structure schematic view of the support and the blocking part in the second form of the spray arm assembly provided by the embodiment of the present application; Figure 10 Partial enlarged view at C;

[0050] Figure 12 Structure schematic view of the support and the blocking part in the second form of the spray arm assembly provided by the embodiment of the present application;

[0051] Figure 13 Structure schematic view of the lower cover of the spray arm body provided by the embodiment of the present application.

[0052] Icon:

[0053] 100-spray arm body; 110-water outlet; 120-drain port; 130-water inlet; 140-upper cover; 141-tubular structure; 1411-clamping part; 150-lower cover;

[0054] 200-movable part; 210-support; 211-first supporting rod; 212-second supporting rod; 213-limiting structure; 2131-first surface; 2132-second surface; 214-clamping structure; 215-sleeve; 220-blocking part; 221-elastic sheet; 2211-fixing groove; 222-spherical structure;

[0055] 300-connection piece; 310-first section; 320-second section; 330-third section;

[0056] 400 - return member;

[0057] 500 - water blocking member;

[0058] 600 - fastener; 610 - blocking ring; 611 - opening;

[0059] Q - cavity. DETAILED DESCRIPTION

[0060] The technical solutions of the present application will be clearly and completely described below in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0061] The present embodiment provides a spray arm assembly, please refer to Figures 1 to 13The spray arm assembly comprises a spray arm body 100 and a movable piece 200, wherein the spray arm body 100 has a cavity Q for containing washing water, and a water spraying opening 110, a water draining opening 120 and a water inlet opening 130 are arranged at positions of the upper wall, the lower wall and the like of the cavity Q and are in communication with the cavity Q, the water inlet opening 130 is used for injecting washing water into the cavity Q, the water spraying opening 110 is used for spraying washing water to the dishes to be washed, and the water draining opening 120 is used for draining residual water in the cavity Q after the spray arm assembly is completed. Further, the movable piece 200 is arranged at the water draining opening 120, and the movable piece 200 can block or expose the water draining opening 120. Specifically, when washing water enters the cavity Q along the water inlet opening 130, water pressure is generated due to the impact of washing water on the movable piece 200, so that the movable piece 200 can be tightly pressed at the water draining opening 120, thereby blocking the water draining opening 120, so that the washing water in the cavity Q cannot flow out of the water draining opening 120 but can only be sprayed to the dishes to be washed through the water spraying opening 110. Further, by blocking the movable piece 200 at the water draining opening 120, the problem of affecting water pressure caused by directly opening a hole 611 at the middle position of the spray arm in the prior art is effectively alleviated. When the injection of washing water into the cavity Q from the water inlet opening 130 is stopped, the impact pressure from the washing water on the movable piece 200 is lost, at this time, the movable piece 200 can be separated from the water draining opening 120, so that the residual water in the cavity Q is drained through the water draining opening 120 under the action of gravity, so as to ensure that there is no residual water in the cavity Q, effectively alleviate the problem of accidental dripping of residual water in the spray arm to the dishes to cause secondary pollution to the dishes, and further improve the experience of users and protect the health of users. It should be noted that, considering that the water draining opening 120 is used for draining the residual water in the cavity Q to ensure that there is no residual water in the cavity Q, the water draining opening 120 in the embodiment is arranged at the bottom of the spray arm body 100, for example, on the bottom end surface, and in the embodiment, the bottom end surface of the spray arm body 100 is arranged in an inclined manner, so that the residual water in the cavity Q can flow along the bottom end surface of the spray arm body 100 to the water draining opening 120, and is finally drained to the outside of the cavity Q.

[0062] Specifically as Figure 1 and Figure 9As shown, the spray arm body 100 comprises an upper cover 140 and a lower cover 150, both of which have deep grooves, and when the upper cover 140 and the lower cover 150 are buckled together, the deep grooves of the two are buckled together, so that a cavity Q is formed between the upper cover 140 and the lower cover 150, which is used to accommodate washing water; further, the upper cover 140 and the lower cover 150 are both long strips, and a water inlet 130 is provided in the middle of the upper cover 140, so that under the driving action of the water pump, washing water can be injected into the cavity Q; At the same time, water outlets 110 are provided on the upper cover 140 and the lower cover 150, so that the washing water in the cavity Q can be sprayed out of the water outlets 110 to spray the dishes to be washed, and the dishes to be washed are washed. Preferably, a plurality of water outlets 110 are arranged along the length direction of the upper cover 140, and water outlets 110 are provided at both ends of the lower cover 150, so as to increase the spraying range of the washing water.

[0063] Considering that there will be residual water in the cavity Q after the water pump stops supplying water, in order to facilitate the discharge of the residual water in the cavity Q, in this embodiment, the middle part of the lower cover 150 is designed as a low-lying area P, and the drain outlet 120 is provided in the low-lying area P, so that the residual water in the cavity Q can flow to the low-lying area P and be discharged from the drain outlet 120, thereby improving the discharge efficiency of the residual water. Preferably, the low-lying area P can be designed as a circular arc curved surface, that is, the middle part of the lower cover 150 is concave to form a low-lying area P, so as to facilitate the collection of residual water in the cavity Q.

[0064] It should be noted that the movable part 200 in this embodiment can block the drain outlet 120 under the action of water pressure and expose the drain outlet 120 after stopping water inflow. Specifically, the movable part 200 can be elastically deformed under the action of water pressure to approach or move away from the drain outlet 120 to block or expose the drain outlet 120.

[0065] As a more preferred embodiment, the movable part 200 comprises a bracket 210 and a blocking part 220, specifically, the bracket 210 is arranged on the spray arm body 100, and the blocking part 220 is connected to the bracket 210 and mounted inside the cavity Q near the drain outlet 120 through the bracket 210; further, the blocking part 220 can be deformed after bearing pressure or relieving pressure, for example, the blocking part 220 is made of elastic material, which deforms to block the drain outlet 120 when bearing water pressure, and restores the deformation to separate from the drain outlet 120 when the water pressure is removed; in addition, the blocking part 220 can also move relative to the drain outlet 120 or relative to the bracket 210 after bearing pressure or relieving pressure, for example, an elastic member for automatically opening the blocking part 220 is added.

[0066] In order to enable the sealing part 220 to bear sufficient pressure to tightly seal the drain port 120 when the water inlet 130 is filled with water, the water inlet 130 and the drain port 120 are oppositely arranged in the embodiment, preferably, the water inlet 130 is arranged at the middle position of the upper cover 140, and the drain port 120 is arranged at the middle position of the lower cover 150. After the upper cover 140 and the lower cover 150 are buckled, the water inlet 130 and the drain port 120 are just opposite to each other. Thus, when the washing water flows into the cavity Q from the water inlet 130, under the joint action of water pressure and gravity, the washing water can impact the sealing part 220 or the structure directly connected with the sealing part 220, so as to increase the pressing force of the sealing part 220 to seal the drain port 120 to a certain extent, thereby effectively preventing the washing water from leaking from the drain port 120 during the washing process, and further ensuring that the cavity Q has sufficient water pressure to improve the washing effect.

[0067] Specifically, as shown in Figures 2 to 5 、 Figure 10 and Figure 11 , the water inlet 130 and the drain port 120 are oppositely arranged. Since the support 210 is composed of a plurality of support members, the washing water injected into the cavity Q from the water inlet 130 can smoothly flow into the cavity Q through the support 210. Moreover, the sealing part 220 is oppositely arranged with the drain port 120. When the sealing part 220 is directly installed on the support 210, the washing water can directly impact the side of the sealing part 220 away from the drain port 120, further increasing the pressure acting on the sealing part 220. When the sealing part 220 is installed on the support 210 through some other structure, the washing water can indirectly apply pressure to the sealing part 220 by impacting the other structure, which can also ensure that the sealing part 220 tightly seals the drain port 120, thereby ensuring the ejection pressure of the washing water.

[0068] As a more preferred embodiment, the support 210 includes a sleeve 215 and a plurality of clamping structures 214 arranged circumferentially and spaced apart along the sleeve 215, and the water inlet 130 is provided with a plurality of clamping portions 1411, and the clamping structures 214 correspondingly match the clamping portions 1411. During installation, the sleeve 215 is only inserted into the water inlet 130, and each clamping structure 214 is clamped with the corresponding clamping portion 1411, so as to realize the cooperative installation between the support 210 and the spray arm body 100.

[0069] Further, in order to improve the stability of the installation between the bracket 210 and the spray arm body 100, and prevent the bracket 210 from moving relative to the spray arm body 100, a limiting structure 213 is further arranged on the periphery of the sleeve 215 in the embodiment, and a certain distance is formed between the limiting structure 213 and the clamping structure 214, which is used to accommodate the clamping portion 1411, and the limiting structure 213 has a first surface 2131. In order to install the bracket 210, the water inlet 130 of the spray arm body 100 in the embodiment is outwardly protruded to form a tubular structure 141, and the inner wall of the tubular structure 141 is provided with a plurality of clamping portions 1411. Thus, when the bracket 210 is inserted into the water inlet 130, the clamping structure 214 around the sleeve 215 can be clamped and matched with the clamping portion 1411 on the inner wall of the tubular structure 141, so as to prevent the bracket 210 from being pulled out of the water inlet 130. At the same time, the first surface 2131 on the limiting structure 213 is tightly abutted against the end surface of the tubular structure 141, so as to prevent the bracket 210 from moving towards the inside of the water inlet 130. Therefore, through the cooperation of the clamping structure 214 and the clamping portion 1411, and the abutment of the first surface 2131 and the end surface of the tubular structure 141, the stable installation between the bracket 210 and the spray arm body 100 is realized.

[0070] Preferably, the limiting structure 213 is a ring body surrounding the periphery of the sleeve 215.

[0071] As a more preferred embodiment, the spray arm assembly further comprises a fastener 600 for fixing the spray arm body 100, as shown in Figures 1 to 5 、 Figures 9 to 11 The inside of the fastener 600 is provided with a blocking ring 610, and the blocking ring 610 has an opening 611 for sleeving the tubular structure 141. Correspondingly, the limiting structure 213 has a second surface 2132 for abutting against the end surface of the blocking ring 610. Specifically, when the bracket 210 is installed, the local part of the bracket 210 is arranged in the opening 611. Since the bracket 210 can be fixedly installed at the water inlet 130 of the spray arm body 100, the second surface 2132 on the limiting structure 213 abuts against the end surface of the blocking ring 610, so as to tightly press and fix the fastener 600 on the spray arm body 100, and the limiting of the fastener 600 is realized.

[0072] Preferably, the fastener 600 is a nut, which is limited on the spray arm body 100 on one hand, and can be installed on the shelf through threaded connection on the other hand, so as to realize the fixed installation of the entire spray arm body 100.

[0073] The specific structure of the movable part 200 and the specific embodiments of the opening and closing thereof will be described in detail as follows:

[0074] The first embodiment in the embodiment is: the plugging part 220 is an elastic sheet 221, specifically as shown in Figures 2 to 5 The end surface (non-extrusion surface) of the elastic sheet 221 away from the drain port 120 is provided with a fixed groove 2211, the opening size of the fixed groove 2211 is smaller than the internal size, that is, the opening cross-sectional area of the fixed groove 2211 is small, the cross-sectional area of the internal cavity is large, and correspondingly, the area of the end cross section of the support 210 is relatively large, so that when installing, only the end of the support 210 is inserted into the fixed groove 2211, the end of the support 210 can be limited by the opening of the fixed groove 2211 to prevent the end of the support 210 from being pulled out of the fixed groove 2211. It should be noted that considering the installation problem between the end of the support 210 and the fixed groove 2211 on the elastic sheet 221, the sidewall of the fixed groove 2211 on the elastic sheet 221 in the embodiment is also made of a deformable material, such as elastic plastic, rubber or silicone. Of course, in other embodiments, the support 210 and the plugging part 220 can also be fixedly connected.

[0075] In addition, in order to ensure the strength, rigidity and stability of the elastic sheet 221 itself, the middle region of the elastic sheet 221 is thickened in the embodiment, that is, the thickness of the elastic sheet 221 gradually decreases from the middle to the edge of the elastic sheet 221, which on the one hand ensures the overall performance of the elastic sheet 221, and on the other hand is beneficial to the deformation of the edge.

[0076] Preferably, the elastic sheet 221 and the fixed groove 2211 are integrally formed and are made of a deformable material, such as elastic plastic, elastic rubber, silicone, etc., and the specific material is not limited.

[0077] Considering the plugging problem of the elastic sheet 221 to the drain port 120, in the embodiment, the area of the elastic sheet 221 is greater than the area of the drain port 120, so that the elastic sheet 221 can completely cover the drain port 120 to completely plug the drain port 120 and avoid leakage of washing water from the drain port 120 during washing. Preferably, the elastic sheet 221 is circular, the drain port 120 is also circular, and the center of the elastic sheet 221 and the center of the drain port 120 are on the same vertical line, at this time, the distance from the edge of the drain port 120 to the edge of the elastic sheet 221 at the corresponding position is equal, thereby ensuring that the sealing effect around the drain port 120 is the same, and further improving the sealing performance of the elastic sheet 221 to the drain port 120. Of course, in other embodiments, the elastic sheet 221 can also be other shapes, such as polygonal, irregular shape, etc.; the shape of the drain port 120 can also be other shapes, and the specific shape is not limited, in addition, the number of drain ports 120 is not limited to one, but can also be two, three, more, etc. Figure 1 Figure 9 and Figure 13 ​As shown, the drain port 120 can be one or five, and the specific number is not limited.

[0078] Further, considering the water pressure, water volume, and leakage of residual water, the parameters of the elastic sheet 221, the parameters of the drain port 120, and the relationship between the elastic sheet 221 and the drain port 120 are designed in this embodiment. Preferably, the drain port 120 is circular, the elastic sheet 221 is circular, the distance between the lowest part of the elastic sheet 221 and the upper end surface of the drain port 120 is S when the spray arm assembly is normally installed in the inner cavity of the dishwasher, the radius of the drain port 120 is D1, the radius of the elastic sheet 221 is D2, and S:D1:D2=3:4:5. Based on this design, the elastic sheet 221 blocks the drain port 120 during the washing process without affecting the normal water pressure and water volume of the cavity Q, and after the washing is completed, the elastic sheet 221 retracts, and the distance between the elastic sheet 221 and the drain port 120 can ensure that the residual water in the cavity Q can be smoothly leaked out.

[0079] For the first embodiment, the blocking part 220 is an elastic sheet 221, and the structure of the corresponding bracket 210 is as shown in Figures 2 to 8 Specifically, the bracket 210 includes a first supporting rod 211 and a plurality of second supporting rods 212, each second supporting rod 212 is connected to the first end of the first supporting rod 211, and each second supporting rod 212 is at a certain angle with the first supporting rod 211 and is arranged around the axis of the first supporting rod 211, and the elastic sheet 221 is installed at the second end of the first supporting rod 211. Specifically, the second end of the first supporting rod 211 is embedded and fixed in the fixed groove 2211, and the specific way can be clamping, bonding, screwing, etc.

[0080] Further, the bracket 210 and the corresponding installation form of the bracket 210 can include the following two forms, the first form is as shown in Figure 7 and Figure 8 The free end of each second supporting rod 212 is connected to a limiting structure 213, which is a ring body, and the inner wall of the water inlet 130 is provided with a ring groove. The ring body is directly embedded in the ring groove of the water inlet 130, and the elastic sheet 221 is fixed at the free end of the first supporting rod 211. In this way, the bracket 210 is fixed on the spray arm body 100, and the adjacent second supporting rods 212 are spaced apart, so as not to affect the washing water flowing from the water inlet 130 into the cavity Q and impacting the upper end surface of the elastic sheet 221, so that the elastic sheet 221 is more easily blocked by the water pressure on the upper end surface of the elastic sheet 221; the second form is as shown in Figures 2 to 6As shown, each of the second support rods 212 is fixed on the inner wall of the sleeve 215, and the sleeve 215 can be installed at the water inlet 130 of the spray arm body 100. The elastic sheet 221 is fixed at the free end of the first support rod 211. In this way, the bracket 210 can also be fixed without affecting the flow of washing water into the cavity Q and impacting the upper surface of the elastic sheet 221, so as to ensure that the elastic sheet 221 can block the drain outlet 120.

[0081] like Figures 9 to 12 As shown, in the second embodiment of this example, the sealing part 220 is rotatably connected to the bracket 210 through the connector 300, and a return member 400 is connected between the connector 300 and the bracket 210. The return member 400 is preferably a spring, and the return member 400 always provides the sealing part 220 with the power to expose the drain outlet 120. The connector 300 is bent, and its middle part is rotatably connected to the bracket 210 via a pivot. A sealing part 220 is provided at the lower end of the connector 300. In this way, the washing water entering the cavity Q through the inlet 130 can impact the upper surface of the sealing part 220. The washing water can apply water pressure to the upper surface of the sealing part 220, so that the sealing part 220 fits tightly against the drain outlet 120 to seal the drain outlet 120. When the water inlet 130 stops flowing, the upper surface of the sealing part 220 loses the water pressure generated by the washing water impact. Under the driving action of the return member 400, the connector 300 and the sealing part 220 rotate synchronously around the pivot, so that the sealing part 220 disengages from the drain outlet 120. At this time, the residual water in the cavity Q can be discharged from the drain outlet 120.

[0082] To ensure that the sealing part 220 provides sufficient clamping force to the drain outlet 120 to prevent leakage during washing, a water-blocking member 500 is provided at the upper end of the connector 300 in this embodiment. The water-blocking member 500 and the sealing part 220 are located on opposite sides of the rotating shaft. Furthermore, the water-blocking member 500 is positioned opposite the water inlet 130. Since the water inlet 130 and the drain outlet 120 are opposite each other and positioned vertically, the water-blocking member 500... Located above the sealing part 220, water entering the cavity Q through the inlet 130 first impacts the water-blocking member 500, causing it to move downwards. Because the connecting member 300 is designed in a bent shape, both the water-blocking member 500 and the sealing part 220 are located on the left side of the rotating shaft. Therefore, as the water-blocking member 500 moves downwards, it synchronously drives the sealing part 220 downwards via the connecting member 300, thus firmly pressing the sealing part 220 against the drain outlet 120 to achieve a seal and prevent leakage. Furthermore, when the inlet 130 stops receiving washing water, the water-blocking member 500, the connecting member 300, and the sealing part 220 rotate synchronously under the drive of the return member 400, causing the sealing part 220 to disengage from the drain outlet 120 to release residual water.

[0083] Preferably, the water blocking piece 500 is a disc structure, such as a circular disc, a polygonal disc, etc., and the blocking part 220 is a spherical structure 222, the diameter of which is greater than that of the drain port 120, and in order to further improve the sealing performance, it is further preferred that a flared portion is arranged at the upper end face of the drain port 120, through which the contact area between the spherical structure 222 and the drain port 120 can be increased, thereby improving the sealing performance between the spherical structure 222 and the drain port 120.

[0084] Further, referring to Figure 12 , the connecting piece 300 comprises a first segment 310, a second segment 320 and a third segment 330 which are connected in sequence or integrally arranged, the first segment 310 is a straight segment, the free end of the first segment 310 is fixedly connected with the blocking part 220, the second segment 320 is an arc segment, preferably a circular arc segment, and the concave surface of the arc segment faces the side where the blocking part 220 is located, the third segment 330 is an arc segment, preferably a circular arc segment, and the concave surface of the arc segment faces away from the side where the blocking part 220 is located, and the third segment 330 is tangent to the second segment 320 at the connection, and the blocking part 220 is fixed at the free end of the third segment 330; since the water blocking piece 500 needs to be opposite to the water inlet port 130, and the blocking part 220 needs to be opposite to the drain port 120, and the water inlet port 130 and the drain port 120 are preferably arranged opposite to each other, the water blocking piece 500 needs to be arranged opposite to the blocking part 220 in an up-down manner, and thus the connecting piece 300 composed of the first segment 310, the second segment 320 and the third segment 330 is in a bent shape, so as to ensure that the water blocking piece 500 is arranged opposite to the blocking part 220 in an up-down manner, and to a certain extent, the probability of being impacted by washing water is increased, so that the blocking part 220 can be pressed tightly against the drain port 120 to achieve sealing.

[0085] It should be noted here that the shape of the connecting piece 300, the shape of the water blocking piece 500 and the shape of the blocking part 220 are not limited, as long as they can meet the use requirements.

[0086] It should be further noted that in the present embodiment, the opening and closing of the blocking part 220 can be achieved by the deformation of the blocking part 220 itself, i.e. the first implementation mode described above, or can be achieved by the overturning of the blocking part 220, i.e. the second implementation mode described above; the main difference between the two implementation modes lies in the way of opening and closing of the blocking part 220, and the corresponding structures are different, while the structures such as the limiting structure 213, the clamping structure 214, the fastener 600 and the spray arm body 100 of the bracket 210 can be the same or similar, so as to improve the universality of the parts, reduce the design and manufacturing difficulty of the spray arm assembly, thereby improving the efficiency and reducing the cost.

[0087] The embodiment also provides a dishwasher comprising the spray arm assembly and other related modules of the prior art, which will not be described in detail here; the dishwasher can also achieve the technical advantages and effects of the spray arm assembly, which will not be described here.

[0088] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A spray arm assembly, characterized by, The utility model relates to a spray arm assembly, comprising: a spray arm body (100) having a cavity (Q), the spray arm body (100) being provided with a water outlet (110), a water outlet (120) and a water inlet (130) respectively communicating with the cavity (Q); the spray arm body (100) is provided with a movable part (200) corresponding to the position of the water outlet (120), the movable part (200) being used for plugging the water outlet (120) when the water inlet (130) is supplied with water, and exposing the water outlet (120) when the water inlet (130) stops supplying water; the water inlet (130) is arranged opposite to the water outlet (120); the spray arm body (100) comprises an upper cover (140) and a lower cover (150), the cavity (Q) being formed between the upper cover (140) and the lower cover (150), the middle part of the lower cover (150) being designed as a low-lying area (P), and the water outlet (120) being arranged in the low-lying area (P); the movable part (200) comprises a support (210) and a plugging part (220), the support (210) being arranged on the spray arm body (100), and the plugging part (220) being arranged on the support (210) in a deformable and / or movable manner to plug or expose the water outlet (120); when the plugging part (220) is arranged on the support (210) in a deformable manner, the plugging part (220) is an elastic sheet (221), the middle part of the elastic sheet (221) being connected with the support (210), and the area of the elastic sheet (221) being greater than the area of the water outlet (120); when the plugging part (220) is arranged on the support (210) in a movable manner, the plugging part (220) is rotationally connected with the support (210) through a connecting part (300), and the spray arm assembly further comprises a returning part (400) connected between the connecting part (300) and the support (210), the returning part (400) being configured to make the plugging part (220) have a movement trend of exposing the water outlet (120).

2. The spray arm assembly of claim 1, wherein, the support (210) is arranged in the water inlet (130), and the plugging part (220) is arranged opposite to the water outlet (120).

3. The spray arm assembly of claim 2, wherein, the support (210) comprises a sleeve (215) and a plurality of clamping structures (214) arranged in a circumferential direction of the sleeve (215); the water inlet (130) is provided with a plurality of clamping parts (1411), and the clamping structures (214) are matched with the corresponding clamping parts (1411).

4. The spray arm assembly of claim 3, wherein, the periphery of one end of the sleeve (215) away from the clamping structures (214) is provided with a limiting structure (213).

5. The spray arm assembly of claim 4, wherein, the limiting structure (213) has a first surface (2131); the water inlet (130) of the spray arm body (100) is outwardly protruded to form a tubular structure (141), and the inner wall of the tubular structure (141) is provided with the clamping parts (1411). When the movable element (200) is inserted into the water inlet (130), the clamping structure (214) is clamped with the corresponding clamping part (1411), and the first surface (2131) abuts against the end surface of the tubular structure (141).

6. The spray arm assembly of claim 5, wherein, The spray arm assembly further comprises a fastener (600) for fixing the spray arm body (100), and a blocking ring (610) is arranged inside the fastener (600), wherein the blocking ring (610) has an opening (611) adapted to be sleeved with the tubular structure (141).

7. The spray arm assembly of claim 6, wherein, The limiting structure (213) has a second surface (2132) adapted to abut against the end surface of the blocking ring (610).

8. The spray arm assembly of any one of claims 1-7, wherein, The water outlet (120) is circular or polygonal. And / or, the water outlet is at least one.

9. The spray arm assembly of any one of claims 1-7, wherein, The distance between the lowest part of the elastic sheet (221) and the upper end of the water outlet (120) is S, the radius of the water outlet (120) is D1, and the radius of the elastic sheet (221) is D2, and S:D1:D2=3:4:

5.

10. The spray arm assembly of any one of claims 1-7, wherein, The support (210) comprises a first supporting rod (211) and a plurality of second supporting rods (212). The plurality of second supporting rods (212) are connected to the first end of the first supporting rod (211) and are arranged around the axis of the first supporting rod (211). The elastic sheet (221) is arranged at the second end of the first supporting rod (211).

11. The spray arm assembly of claim 10, wherein, A fixing groove (2211) is arranged on the end surface of the elastic sheet (221) away from the water outlet (120), and the second end of the first supporting rod (211) is embedded and fixed in the fixing groove (2211).

12. The spray arm assembly of any one of claims 1-7, wherein, The connecting piece (300) is provided with a water blocking piece (500). The connecting piece (300) is in a bent shape, and the water blocking piece (500) and the blocking part (220) are respectively located at the two end portions of the connecting piece (300), and the water blocking piece (500) is arranged opposite to the water inlet (130).

13. The spray arm assembly of claim 12, wherein, The connecting piece (300) comprises a first segment (310), a second segment (320) and a third segment (330) connected in sequence or integrally arranged, the first segment (310) is a straight segment, the second segment (320) is an arc segment, the third segment (330) is an arc segment, and the second segment (320) and the third segment (330) are tangent at the connection, the blocking part (220) is connected to the free end of the first segment (310), the water blocking piece (500) is connected to the free end of the third segment (330), and the second segment (320) is connected to the support (210) through a rotating shaft. And / or, the blocking part (220) is a spherical structure (222). And / or, the water blocking piece (500) is a disc-shaped structure.

14. A dishwasher, characterized in that The spray arm assembly comprises the spray arm body (100) and the connecting piece (300). The spray arm assembly comprises the spray arm body (100) and the connecting piece (300).

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