Spraying arm of dish washing machine

Abstract

The utility model relates to the technical field of kitchen appliances, in particular to a dish-washing machine spraying arm which comprises a spraying arm upper shell, a spraying arm lower shell, a spraying arm upper cover, a spraying arm upper cover and a spraying arm lower cover. A second connecting part is arranged on the edge of the spraying arm lower shell, the spraying arm upper shell and the spraying arm lower shell can be buckled with each other, and the second connecting part is attached to and connected with the first connecting part; the first connecting part and the second connecting part are mutually connected to form a connecting flange, and the connecting flange is provided with a profiling part. According to the spraying arm of the dish washing machine, the structures and the connecting modes of the spraying arm upper shell and the spraying arm lower shell are optimized, and when the first connecting part and the second connecting part are in the state of being connected with each other, the connecting strength of the first connecting part and the second connecting part is enhanced again through the profiling part; the structural strength and the overall rigidity of the spraying arm of the dish-washing machine are obviously improved, and the working time limit of the spraying arm of the dish-washing machine and the stability of the working process can be prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, in particular to a dish-washing machine spray arm. BACKGROUND

[0002] With the improvement of living standards, more and more users choose to use dish-washing machines. The spray arm is an important component in the water system of the dish-washing machine, which mainly functions to wash the surface of tableware through the spray hole, thereby achieving the effect of tableware cleaning. Moreover, the spray arm is usually arranged at the shelf position and the lower shelf position in the inner cavity of the dish-washing machine, so that the user can clearly and directly see the shape and material of the spray arm after opening the door body. Therefore, the structure, material and appearance of the spray arm directly affect the user's experience.

[0003] Generally, the existing dish-washing machine spray arm is made of plastic material, which has the advantages of low cost, simple and mature process and high realizability, but the existing spray arm usually adopts a common connection mode such as clamping for the connection of the shell, and the connection strength and rigidity are general, which is difficult to ensure the structural strength of the spray arm, thereby easily affecting the structural rigidity and service life of the spray arm. CONTENT OF THE INVENTION

[0004] The purpose of the present application is to provide a dish-washing machine spray arm to solve the technical problem that the overall connection strength of the existing spray arm is general, which is difficult to ensure the structural strength of the spray arm, thereby easily affecting the structural rigidity and service life of the spray arm.

[0005] The present application provides a dish-washing machine spray arm, comprising: a spray arm upper shell, the edge of the spray arm upper shell is provided with a first connecting part;

[0006] a spray arm lower shell, the edge of the spray arm lower shell is provided with a second connecting part, the spray arm upper shell and the spray arm lower shell can be mutually buckled, and the second connecting part is attached to the first connecting part;

[0007] The first connecting part and the second connecting part are mutually connected to form a connecting flange, and the connecting flange is provided with a press-type part.

[0008] In any of the above technical solutions, further, the dish-washing machine spray arm comprises at least two arm forks, and all the arm forks are arranged in a central symmetry;

[0009] The spray arm lower shell of one of the arm forks is provided with a lower spray hole, and the spray arm upper shell is provided with an anti-fooling press mark at a position corresponding to the lower spray hole.

[0010] In any of the above technical solutions, further, the dish-washing machine spray arm further comprises a connecting member, a first water inlet is arranged at a center position of the spray arm upper housing, and the connecting member is arranged at the first water inlet.

[0011] The connecting member comprises:

[0012] A connecting flange;

[0013] A fixing knob connected with the connecting flange;

[0014] A fixing buckle arranged at the fixing knob and connected with the connecting flange.

[0015] In any of the above technical solutions, further, the connecting member further comprises a friction plate arranged between the fixing buckle and the fixing knob.

[0016] In the above technical solution, further, the profiled part is a profiled convexity formed at a part of the connecting flange, and a plurality of profiled convexities are arranged at intervals.

[0017] In any of the above technical solutions, further, a plurality of reinforcing connecting parts are arranged at intervals at the second connecting part, the reinforcing connecting parts are arranged opposite to the profiled convexities, and each reinforcing connecting part is capable of being connected with one profiled convexity.

[0018] In any of the above technical solutions, further, a first boss is arranged at a periphery of the first water inlet, the connecting flange is connected with the first boss, the connecting flange comprises a plurality of connecting edges connected in sequence, and the first boss is provided with at least one first stop part located at a side of the connecting edge.

[0019] In any of the above technical solutions, further, the dish-washing machine spray arm further comprises a spray arm fixing member, the spray arm lower housing is provided with a second water inlet, and the spray arm fixing member is arranged at the second water inlet.

[0020] In any of the above technical solutions, further, the spray arm lower housing is provided with a second stop part, and the spray arm fixing member is provided with a clamping port capable of being clamped with the second stop part.

[0021] In any of the above technical solutions, further, the first connecting part comprises a first flange, a bent edge and a second flange connected in sequence, the first flange and the second flange are arranged opposite to each other, and an insertion space is formed between the first flange and the second flange.

[0022] The second connecting part is inserted into the insertion space, and the second connecting part is attached to the first flange, the bent edge and the second flange.

[0023] In any of the above technical solutions, further, the upper spray arm shell and the lower spray arm shell are metal pieces.

[0024] Compared with the prior art, the application has the following beneficial effects:

[0025] The dishwasher spray arm provided by the application comprises: an upper spray arm shell, the edge of the upper spray arm shell is provided with a first connecting part; a lower spray arm shell, the edge of the lower spray arm shell is provided with a second connecting part, the upper spray arm shell and the lower spray arm shell can be mutually buckled, the second connecting part is attached to and connected with the first connecting part; the first connecting part and the second connecting part are mutually connected to form a connecting flange together, and the connecting flange is provided with a press part.

[0026] The dishwasher spray arm provided by the application optimizes the structure and connection mode of the upper spray arm shell and the lower spray arm shell, and the connection strength of the first connecting part and the second connecting part is further strengthened through the press part when the first connecting part and the second connecting part are in the state of mutual connection, so that the structural strength and overall rigidity of the dishwasher spray arm are obviously improved, which helps to prolong the working time limit and the stability of the working process of the dishwasher spray arm. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0028] Figure 1 The explosion structure schematic diagram of the dishwasher spray arm provided by the first embodiment of the application;

[0029] Figure 2 The connection structure schematic diagram of the first connecting part and the second connecting part of the dishwasher spray arm provided by the first embodiment of the application;

[0030] Figure 3 The structure schematic diagram of the upper spray arm shell of the dishwasher spray arm provided by the first embodiment of the application;

[0031] Figure 4 The structure schematic diagram of the lower spray arm shell of the dishwasher spray arm provided by the first embodiment of the application;

[0032] Figure 5Part structure schematic view of the spray arm of the dish-washing machine provided in Embodiment One of the present application;

[0033] Figure 6 Structure schematic view of the connecting member of the spray arm of the dish-washing machine provided in Embodiment One of the present application;

[0034] Figure 7 Structure schematic view of the lower spray arm shell of the spray arm of the dish-washing machine provided in Embodiment Two of the present application;

[0035] Figure 8 Structure schematic view of the spray arm of the dish-washing machine provided in Embodiment One of the present application. Figure 7 Enlarged structure schematic view of the spray arm of the dish-washing machine provided in Embodiment One of the present application at A.

[0036] Reference signs:

[0037] 1-upper spray arm shell, 101-first arm fork, 102-first wall surface, 103-second wall surface, 104-third wall surface, 2-lower spray arm shell, 201-second arm fork, 202-second boss, 3-first connecting part, 301-first flange, 302-bent edge, 303-second flange, 4-second connecting part, 5-fool-proof embossing, 7-embossed boss, 8-water inlet, 9-first boss, 901-first stop part, 10-connecting member, 1001-connecting flange, 1002-flange table, 1003-fixing knob, 1004-connecting edge part, 1005-fixing buckle, 1006-friction sheet, 11-spray arm fixing part, 1101-base, 1102-clamping interface, 1103-water injection pipe, 1104-clamping part, 1105-clamping part, 12-second stop part, 13-spraying hole. DETAILED DESCRIPTION

[0038] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application.

[0039] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0040] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0041] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The following refers to Figures 1 to 8 The dishwashing machine spray arm described in the embodiments of the present application is described.

[0044] Embodiment one, see Figures 1 to 6 As shown, the first embodiment of the present application provides a dishwashing machine spray arm, the dishwashing machine spray arm comprises a spray arm upper shell 1 and a spray arm lower shell 2, wherein the shape of the spray arm upper shell 1 is matched with the shape of the spray arm lower shell 2, the spray arm upper shell and the spray arm lower shell can be mutually buckled, the edge of the spray arm upper shell 1 is provided with a first connecting part 3, the edge of the spray arm lower shell 2 is provided with a second connecting part 4 for connecting with the first connecting part 3, when the spray arm upper shell 1 and the spray arm lower shell 2 are matched and buckled, and the first connecting part 3 and the second connecting part 4 are connected, the spray arm upper shell 1 and the spray arm lower shell 2 can be integrated. The spray arm upper shell 1 and the spray arm lower shell 2 are both made of metal material, the overall visual effect is good, and it is more delicate, preferably, the spray arm upper shell 1 and the spray arm lower shell 2 are both made of mirror stainless steel material, the spray arm upper shell and the spray arm lower shell are both made of metal material with good texture, the overall aesthetic degree and texture are obviously improved, not only the aesthetic degree is improved, but also the corrosion resistance of the spray arm upper shell 1 and the spray arm lower shell 2 is ensured.

[0045] The dish washing machine spray arm comprises at least two arm forks, all of which are centrally symmetrically arranged, and the arm forks are divided into first arm forks 101 and second arm forks 201. Specifically, the spray arm upper shell 1 comprises at least two first arm forks 101, preferably, in the embodiment, the number of the first arm forks 101 is three, the three first arm forks 101 extend towards different directions, the three first arm forks 101 are the same in structure and are centrally symmetrically distributed. The three first arm forks 101 are integrally processed and formed, each of the first arm forks 101 is provided with a fixed edge, the fixed edges of the adjacent two first arm forks 101 are naturally and transitionally connected, and each of the fixed edges forms a first connecting part 3. The spray arm lower shell 2 comprises at least two second arm forks 201, the number of the second arm forks 201 is the same as that of the first arm forks 101, in the embodiment, the number of the second arm forks 201 is also three, each of the second arm forks 201 is opposite to one of the first arm forks 101 and can be connected with each other. The three second arm forks 201 are integrally processed and formed, each of the second arm forks 201 is also provided with a fixed edge, the fixed edges of the adjacent two second arm forks 201 are naturally and transitionally connected, and each of the fixed edges forms a second connecting part 4.

[0046] The first connecting part 3 has an integrated structure with the spray arm upper shell 1 and can be manufactured by stamping process. The first connecting part 3 comprises a first flange 301, a bent edge 302 and a second flange 303 which have an integrated structure, the first flange 301 and the second flange 303 are connected through the bent edge 302, the first flange 301 and the second flange 303 are arranged opposite to each other, the second flange 303 is below the first flange 301, and the first flange 301, the bent edge 302 and the second flange 303 form an insertion space.

[0047] The second connecting part 4 is a sheet-shaped pressing edge, the second connecting part 4 has an integrated structure with the spray arm lower shell 2, the second connecting part 4 can be inserted into the insertion space, so that the first connecting part 3 can realize the assembly of the spray arm upper shell 1 and the spray arm lower shell 2 in a manner of covering the second connecting part 4, after each of the first connecting part 3 and the corresponding second connecting part 4 is connected in place, the two are pressed and riveted, so that the first flange 301, the bent edge 302 and the second flange 303 can be tightly attached to the pressing edge without gap, thereby fixing the spray arm upper shell 1 and the spray arm lower shell 2, and forming a closed cavity between the spray arm lower shell 2 and the spray arm upper shell 1, which can be used for water flow. In addition, the spray arm upper shell 1 and the spray arm lower shell 2 are both provided with spray holes 13 which are communicated with the closed cavity, when the dish washing machine spray arm rotates, the water flowing into the closed cavity can be sprayed out through the spray holes 13 to clean the dishes or other articles in the dish washing machine.

[0048] Preferably, the width of the first connecting part 3 is 2mm-7mm.

[0049] Further, each of the first arm forks 101 has a polyhedral structure, at least including a first wall surface 102, a second wall surface 103 and a third wall surface 104 arranged in sequence, wherein the first wall surface 102, the second wall surface 103 and the third wall surface 104 are arranged in sequence along the width direction of the first arm fork 101, the length of the first wall surface 102, the length of the second wall surface 103 and the length of the third wall surface 104 all extend along the length direction of the first arm fork 101, the distance between the second wall surface 103 and the lower spray arm shell 2 is greater than the distance between the first wall surface 102 and the lower spray arm shell 2, and also greater than the distance between the third wall surface 104 and the lower spray arm shell 2, so that the height of the first arm fork 101 gradually decreases from the middle to both sides, and the middle position of the first arm fork 101 bulges towards the direction away from the lower spray arm shell 2. Such a structure makes it difficult for water to remain on the upper surface of the upper spray arm shell 1, which is beneficial to the drying of the surface of the spray arm of the dishwasher.

[0050] It should be noted that the first wall surface 102, the second wall surface 103 and the third wall surface 104 can all be flat surfaces, or can be curved surfaces curved towards the direction away from the lower spray arm shell 2. The number of wall surfaces of the first arm fork 101 is not limited to three, but can also be two, four or more, and all the wall surfaces of the first arm fork 101 can be arranged and processed according to the above rules.

[0051] Further, one of all the arm forks is provided with a lower spray hole, and the position of the arm fork directly opposite to the lower spray hole is provided with a foolproof stamp 5. Specifically, the upper spray arm shell 1 of one of the first arm forks 101 is provided with a foolproof stamp 5, the lower spray arm shell 2 of the first arm fork 101 is provided with a lower spray hole, and the foolproof stamp 5 and the lower spray hole are arranged to face each other. The foolproof stamp 5 is a pit formed by local recessing of the upper spray arm shell 1. When the upper spray arm shell 1 and the lower spray arm shell 2 are assembled, first, the positions of the foolproof stamp 5 and the lower spray hole are determined, then the upper spray arm shell 1 and the lower spray arm shell 2 are placed according to the positions of the foolproof stamp 5 and the lower spray hole, and then the press riveting connection of the first connecting part 3 and the second connecting part 4 is performed.

[0052] Further, when the first connecting portion 3 and the second connecting portion 4 are connected by the press riveting, the first connecting portion 3 and the second connecting portion 4 are attached to each other, and the two form a connecting flange at the edge of the spray arm of the dishwasher, the connecting flange is provided with a plurality of pressed portions, and the plurality of pressed portions can strengthen the connection strength of the first connecting portion 3 and the second connecting portion 4. Specifically, the plurality of pressed portions are a plurality of pressed protrusions 7 formed by synchronous press riveting during the press riveting of the first connecting portion 3 and the second connecting portion 4, or the plurality of pressed protrusions 7 are formed by secondary press riveting of the connecting flange after the press riveting of the first connecting portion 3 and the second connecting portion 4, and the plurality of pressed protrusions 7 are distributed on the connecting flange. During the press riveting of the upper spray arm shell 1 and the lower spray arm shell 2, the local force of the first connecting portion 3 is transmitted to the second connecting portion 4, so that the local part of the first connecting portion 3 and the local part of the second connecting portion 4 are riveted to form a pressed protrusion 7, thereby increasing the riveting strength of the first connecting portion 3 and the second connecting portion 4, ensuring the connection strength and stability between the upper spray arm shell 1 and the lower spray arm shell 2, and reducing the probability of water leakage between the first connecting portion 3 and the second connecting portion 4. Preferably, the distance between two adjacent pressed protrusions 7 is 20mm-80mm. It should be noted that the shape of the pressed protrusion 7 can be a strip or a dot, but it is not limited to this.

[0053] Further, the upper spray arm shell 1 is provided with a first water inlet 8, and the first water inlet 8 is preferably arranged at the center of the upper spray arm shell 1. Specifically, the first water inlet 8 is arranged at the position of the center of symmetry of the three first arms, and the first water inlet 8 is in communication with the closed cavity.

[0054] Further, the lower spray arm shell 2 is provided with a second boss 202, and the shape of the second boss 202 is preferably circular. The second boss 202 is arranged at the center of the lower spray arm shell 2, and the second boss 202 is opposite to the first water inlet 8. The water flowing into the first water inlet 8 first flows to the second boss 202, and then flows to each second arm fork 201. The arrangement of the second boss 202 is conducive to water flow guidance and pressure loss reduction.

[0055] The position of the second boss 202 is the lowest position of the lower spray arm shell 2. The distance between the lower spray arm shell 2 and the upper spray arm shell 1 gradually increases along the direction from the second boss 202 to the end of the second arm fork 201. The position close to the second boss 202 of the lower spray arm shell 2 is provided with one or more spray holes 13. After the spray arm of the dishwasher stops running, the water in the closed cavity will flow to the second boss 202 and be discharged through the spray holes 13 near the second boss 202, thereby reducing the water residue in the spray arm of the dishwasher.

[0056] Further, the dish washing machine spray arm further comprises a connecting member 10, the connecting member 10 is used for connecting the waterway system. The connecting member 10 comprises a connecting flange 1001 and a fixing knob 1003, the first water inlet 8 is circumferentially formed with a first boss 9, the inner wall of the first boss 9 is provided with an internal thread, the connecting flange 1001 is provided with an external thread which can be matched with the internal thread of the first boss 9, the connecting flange 1001 is threadedly connected with the first boss 9, and the fixing knob 1003 is connected and fixed with the connecting flange 1001. The connecting flange 1001 is provided with a flange table 1002 which is arranged along the circumference of the connecting flange 1001. By operating the flange table 1002, the installation and fastening of the connecting flange 1001 are facilitated.

[0057] The connecting member 10 further comprises a fixing buckle 1005 and a friction sheet 1006. The fixing buckle 1005 is arranged on the fixing knob 1003 and is connected with the connecting flange 1001. The connection mode can be clamping. The friction sheet 1006 is arranged between the fixing buckle 1005 and the fixing knob 1003. The fixing buckle 1005 is further used for connecting with the waterway system, so as to realize water supply to the closed cavity. The fixing buckle 1005 can rotate relative to the fixing knob 1003, or the fixing buckle 1005 can rotate relative to the waterway system, so that the water system remains fixed, and the dish washing machine spray arm can rotate freely. By arranging the friction sheet 1006, the rotation process of the dish washing machine spray arm is smoother.

[0058] Preferably, the flange table 1002 comprises a plurality of sequentially connected connecting edges 1004, and the adjacent two connecting edges are connected by a round corner. The surface of the first boss 9 facing the connecting flange 1001 is provided with a first stop portion 901. The number of the first stop portion 901 is at least one. When the number of the first stop portion 901 is two or more, all the first stop portions 901 are arranged at intervals along the circumference of the flange table 1002. The first stop portion 901 is specifically a protrusion protruding relative to the surface of the first boss 9. The length of the first stop portion 901 extends along the length of the connecting edge 1004. The connecting edge 1004 is in contact with the first boss 9 or forms a small gap, so that the first stop portion 901 can realize the stop action on the connecting flange 1001, and abnormal rotation or loosening of the connecting flange 1001 is avoided.

[0059] Embodiment two, referring to Figure 7 and Figure 8 The embodiment two of the present application provides another dish washing machine spray arm. The dish washing machine spray arm provided by the embodiment two is the same as the dish washing machine spray arm provided by the above-mentioned embodiment one, and the same content is not described herein again. The difference lies in that:

[0060] The dish washing machine spray arm comprises a spray arm upper shell 1 (not shown in the figure) and a spray arm lower shell 2, wherein the shape of the spray arm upper shell 1 is matched with the shape of the spray arm lower shell 2, the spray arm upper shell and the spray arm lower shell can be buckled with each other, the edge of the spray arm upper shell 1 is provided with a first connecting part 3, the edge of the spray arm lower shell 2 is provided with a second connecting part 4 for connecting with the first connecting part 3, when the spray arm upper shell 1 and the spray arm lower shell 2 are matched and buckled, and the first connecting part 3 and the second connecting part 4 are connected, the spray arm upper shell 1 and the spray arm lower shell 2 can be fixed as a whole. The spray arm upper shell 1 and the spray arm lower shell 2 are both made of metal material, and the overall visual effect is good and delicate. Preferably, the spray arm upper shell 1 and the spray arm lower shell 2 are both made of mirror stainless steel material, which not only improves the aesthetic degree, but also ensures the corrosion resistance of the spray arm upper shell 1 and the spray arm lower shell 2.

[0061] The specific connection mode and connection structure of the first connecting part 3 and the second connecting part 4 can refer to the related contents in the above-mentioned embodiment one, and the same contents will not be described here.

[0062] Further, in the present embodiment, the spray arm upper shell 1 is not provided with a first water inlet, and the spray arm lower shell 2 is provided with a second water inlet at the center position, and the dish washing machine spray arm further comprises a spray arm fixing part 11, which is arranged at the second water inlet and is rotationally connected with the waterway system or other specified position of the dish washing machine.

[0063] The spray arm fixing part 11 comprises a base 1101, a water injection pipe 1103 and a clamping part 1104, the base 1101 is connected with the second water inlet through matched threads, the water injection pipe 1103 and the clamping part 1104 are arranged on the base 1101, the water injection pipe 1103 is communicated with the second water inlet, and the clamping part 1104 is located at the side of the water injection pipe 1103. Preferably, the clamping part 1104, the water injection pipe 1103 and the base 1101 have an integrated structure, the waterway system or other specified position of the dish washing machine for connecting with the spray arm fixing part is provided with a clamping groove, the end of the clamping part 1104 away from the base 1101 is provided with a clamping part 1105, the clamping part 1105 can be clamped in the clamping groove and moved in the clamping groove, and the spray arm lower shell 2 can be rotated synchronously with the spray arm fixing part 11, and can also drive the spray arm upper shell 1 to rotate synchronously.

[0064] The second stop portion 12 is arranged on the surface of the lower spray arm shell 2 facing the upper spray arm shell 1, the shape of the second stop portion 12 is preferably a circular convex protruding towards the upper spray arm shell 1, and the number of the second stop portion 12 is at least one. When the number of the second stop portion 12 is more than one, all the second stop portions 12 are arranged at intervals along the circumference of the second water inlet 8. The base 1101 is provided with a clamping port 1102, the number of the clamping port 1102 is matched with the number of the second stop portion 12, and each clamping port 1102 is arranged corresponding to one second stop portion 12. The second stop portion 12 can clamp and block the clamping port 1102. Since the spray arm fixing piece 11 is usually a plastic part, when the dishwasher adopts a hot water cleaning mode, the spray arm fixing piece 11 may be deformed to a certain extent due to temperature. By arranging the second stop portion 12, the spray arm fixing piece 11 can be effectively prevented from loosening or falling off during the washing process.

[0065] In summary, the dishwasher spray arm provided by the present application optimizes the structure and connection mode of the upper spray arm shell 1 and the lower spray arm shell 2. In the state that the first connecting portion 3 and the second connecting portion 4 are connected to each other, the connection strength of the first connecting portion 3 and the second connecting portion 4 is further strengthened by the profiling portion, so that the structural strength and overall rigidity of the dishwasher spray arm are obviously improved, which helps to prolong the working time limit and the stability of the working process of the dishwasher spray arm.

[0066] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and 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 they 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 dishwasher spray arm, characterized in that, The spray arm upper shell is provided with a first connecting part at the edge thereof. The spray arm lower shell is provided with a second connecting part at the edge thereof, the spray arm upper shell and the spray arm lower shell can be mutually buckled, and the second connecting part is attached to the first connecting part. The first connecting part and the second connecting part are connected to each other to form a connecting flange, and the connecting flange is provided with a press part. The spray arm of the dishwasher comprises at least two arm forks, and all the arm forks are centrally symmetrically arranged.

2. The dishwasher spray arm of claim 1, wherein, The spray arm lower shell of one of the arm forks is provided with a lower spray hole, and the spray arm upper shell is provided with a foolproof press mark corresponding to the position of the lower spray hole. The dishwasher spray arm further comprises a connecting member, and the center of the spray arm upper shell is provided with a first water inlet, and the connecting member is arranged at the first water inlet.

3. The dishwasher spray arm of claim 1, wherein, The connecting member comprises: A connecting flange; A fixing knob connected with the connecting flange; A fixing buckle arranged on the fixing knob and connected with the connecting flange. The connecting member further comprises a friction plate arranged between the fixing buckle and the fixing knob.

4. The dishwasher spray arm of claim 3, wherein, The press part is a press convex formed locally on the connecting flange, and the number of the press convexes is multiple, and the multiple press convexes are arranged at intervals.

5. The dishwasher spray arm of claim 1, wherein, The first water inlet is provided with a first boss in the circumferential direction, the connecting flange is connected with the first boss, the connecting flange comprises multiple connecting edges connected in sequence; the first boss is provided with at least one first stop part, and the first stop part is located at the side of the connecting edge.

6. The dishwasher spray arm of claim 3, wherein, The dishwasher spray arm further comprises a spray arm fixing member, the spray arm lower shell is provided with a second water inlet, and the spray arm fixing member is arranged at the second water inlet.

7. The dishwasher spray arm of claim 1, wherein, The spray arm lower shell is provided with a second stop part, and the spray arm fixing member is provided with a clamping port capable of being adaptively clamped with the second stop part.

8. The dishwasher spray arm of claim 7, wherein, The first connecting part comprises a first flange, a bent edge and a second flange connected in sequence, the first flange and the second flange are arranged opposite to each other, and an insertion space is formed between the first flange and the second flange; 9. The dishwasher spray arm according to any one of claims 1 to 8, characterized in that The second connecting part is inserted into the insertion space, and the second connecting part is attached to the first flange, the bent edge and the second flange. The spray arm upper shell and the spray arm lower shell are both metal parts.

10. The dishwasher spray arm according to any one of claims 1 to 8, characterized in that ​

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