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 first spraying arm and a second spraying arm. The first fixing piece is detachably arranged on the first spraying arm; the second fixing piece is rotationally connected with the first fixing piece; the first fixing piece and the second fixing piece are mutually sleeved; and the second fixing piece is arranged on the second spraying arm. According to the spraying arm of the dish-washing machine, a cleaning mode of combining basic cleaning and reinforced cleaning can be achieved, the cleaning range is expanded, cleaning dead corners are reduced, the cleaning effect on objects in the dish-washing machine is ensured, meanwhile, compared with a traditional spraying arm, the spraying arm of the dish-washing machine is thinned, the overall thickness after assembly is effectively reduced, and the spraying arm of the dish-washing machine is convenient to use. And excessive space is prevented from being occupied in the dish-washing machine liner.

Description

Technical Field

[0001] This application relates to the field of kitchen appliance technology, and in particular to a dishwasher spray arm. Background Technology

[0002] With the improvement of living standards, more and more users are choosing to use dishwashers. The spray arm is an important component of the dishwasher's water system. Its main function is to rinse the surface of the dishes with washing water through spray nozzles, thereby achieving the effect of cleaning the dishes. Most existing spray arms are single rotating spray arms that wash dishes. The area rinsed by this type of spray arm is limited, and it is more likely to create dead corners, resulting in poor cleaning effect. In order to improve the cleaning effect, products with stacked spray arms have been developed. Stacked spray arms can rotate relative to each other. However, after different spray arms are stacked and installed, the overall height of the spray arm is relatively high, which increases the overall height (which can also be regarded as thickness) of the spray arm. It requires a large installation space, occupies the internal space of the dishwasher, and is also prone to interference and collision with other external structures. Utility Model Content

[0003] The purpose of this application is to provide a dishwasher spray arm that can, to some extent, solve the technical problem that existing multi-spray arm spray arms are tall and occupy a large space inside the dishwasher.

[0004] This application provides a dishwasher spray arm, including: a first spray arm;

[0005] A first fixing member is detachably disposed on the first spray arm;

[0006] The second fixing member is rotatably connected to the first fixing member;

[0007] The first fixing member and the second fixing member are interlocked;

[0008] The second spray arm, and the second fixing member is disposed on the second spray arm.

[0009] In the above technical solution, further, when the dishwasher spray arm is in the installed state, the height of the upper surface of the second fixing member is higher than the height of the lower shell of the first spray arm.

[0010] In any of the above technical solutions, the first fastener further includes:

[0011] A first connecting part is connected to the first spray arm;

[0012] The first channel is connected to the internal space of the first spray arm;

[0013] The second fastener is partially inserted into the first channel.

[0014] In any of the above technical solutions, the second fastener further includes:

[0015] The second connecting part is connected to the second spray arm;

[0016] The second channel is connected to both the first channel and the internal space of the second spray arm.

[0017] In any of the above technical solutions, the second spray arm is further provided with a mounting platform, and a portion of the second connecting part is connected to the second spray arm within the mounting platform.

[0018] In any of the above technical solutions, the dishwasher spray arm further includes a lubricating washer; the first fixing member further includes a connecting flange, the second fixing member further includes a fixing edge, and the lubricating washer is disposed between the connecting flange and the fixing edge.

[0019] In any of the above technical solutions, the first spray arm is further provided with a water inlet, the water inlet is provided with a third connecting part, and the first connecting part is adapted to connect with the third connecting part inside the water inlet.

[0020] In any of the above technical solutions, the connecting flange is further provided with a first stop portion, and the water inlet is provided with a second stop portion. The shape of the second stop portion is adapted to the shape of the first stop portion, and the second stop portion can be embedded in the first stop portion.

[0021] In any of the above technical solutions, the second fixing member is further provided with a stop surface, and the second spray arm is provided with a stop point. After the second fixing member and the second spray arm are installed, the stop surface abuts against the stop point.

[0022] And / or, the second fixing member is provided with a third stop portion; the second spray arm is provided with a fourth stop portion, the shape of the fourth stop portion being adapted to the shape of the third stop portion, and after the second fixing member and the second spray arm are installed, the third stop portion and the fourth stop portion are adapted to be connected.

[0023] In any of the above technical solutions, the second spray arm further includes an upper housing and a lower housing that are interlocked with each other. The lower housing is provided with a boss that protrudes toward the side surface of the lower housing that is away from the upper housing.

[0024] Compared with the prior art, the beneficial effects of this application are as follows:

[0025] The dishwasher spray arm provided in this application includes: a first spray arm; a first fixing member, which is detachably disposed on the first spray arm; a second fixing member, which is rotatably connected to the first fixing member; the first fixing member and the second fixing member are sleeved on each other; and a second spray arm, on which the second fixing member is disposed.

[0026] The dishwasher spray arm provided in this application can realize a cleaning mode that combines basic washing and intensive washing, expands the cleaning range, reduces cleaning dead corners, and ensures the cleaning effect on the items in the dishwasher. At the same time, compared with traditional spray arms, this dishwasher spray arm has been thinned, which effectively reduces the overall thickness after assembly and avoids occupying too much space in the dishwasher drum. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is an exploded structural diagram of the dishwasher spray arm provided in an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the structure of the dishwasher spray arm provided in an embodiment of this application;

[0030] Figure 3 for Figure 2 A magnified structural diagram at point A;

[0031] Figure 4 A schematic diagram of the connection structure between the first fixing member and the first spray arm of the dishwasher spray arm provided in an embodiment of this application;

[0032] Figure 5 A schematic diagram of the connection structure between the second fixing member and the second spray arm of the dishwasher spray arm provided in an embodiment of this application;

[0033] Figure 6 for Figure 5 A magnified structural diagram at point B;

[0034] Figure 7 This is a schematic diagram of another connection structure between the second fixing member of the dishwasher spray arm and the second spray arm, which is provided in an embodiment of this application.

[0035] Figure label:

[0036] 1-First spray arm, 101-First housing, 102-Second housing, 103-Water inlet, 104-Annular boss, 105-Third connecting part, 106-Second stop part, 2-First fixing member, 201-First main body, 202-First connecting part, 203-Connecting flange, 204-First stop part, 205-Annular protrusion, 206-First mounting surface, 3-Second fixing member, 301-Second main body, 302-Second connecting part 303-Fixed edge, 305-Second mounting surface, 306-Stop surface, 307-Third stop part, 4-Second spray arm, 401-Mounting platform, 402-Fourth connecting part, 403-Stop point, 404-Fourth stop part, 405-Upper housing, 406-Lower housing, 407-Boss, 408-Water supply port, 5-Lubricating washer, 6-Spray arm fixing seat, 601-Third main body, 602-Connector, 603-Snap-fit ​​protrusion. Detailed Implementation

[0037] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0038] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0039] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] The following reference Figures 1 to 7 The dishwasher spray arm described in the embodiments of this application.

[0043] See Figures 1 to 7 As shown, an embodiment of this application provides a dishwasher spray arm, which includes a first spray arm 1, a second spray arm 4, a first fixing member 2, and a second fixing member 3. The volume of the first spray arm 1 is smaller than that of the second spray arm 4. The first fixing member 2 is detachably disposed on the first spray arm 1, and the second fixing member 3 is detachably disposed on the second spray arm 4. The first fixing member 2 and the second fixing member 3 are rotatably connected, thereby rotatably connecting the first spray arm 1 and the second spray arm 4 through the first fixing member 2 and the second fixing member 3. When the second spray arm 4 rotates, the first spray arm 1 can rotate on its own axis, thereby realizing that when the second spray arm 4 rotates, the first spray arm 1 follows the rotation of the second spray arm. The second spray arm 4, as the main cleaning spray arm, combines with the first spray arm 1 to perform an enhanced cleaning mode, increasing the cleaning range of the dishwasher spray arm and improving the cleaning effect of the dishwasher spray arm. The first fixing member 2 and the second fixing member 3 are nested together, thereby reducing the overall height of the first fixing member 2 and the second fixing member 3 after stacking and rotating. This reduces the overall thickness of the dishwasher spray arm, effectively controlling the space occupied by the dishwasher spray arm inside the dishwasher. The dishwasher spray arm also includes a lubricating washer 5, which is disposed between the first fixing member 2 and the second fixing member 3. The lubricating washer 5 can act as a separator and lubricant between the first fixing member 2 and the second fixing member 3, avoiding direct rigid contact between the first fixing member 2 and the second fixing member 3. This effectively improves the stability during the relative rotation of the two members and also prevents wear on the first fixing member 2 or the second fixing member 3, thereby improving the smoothness and stability of the relative rotation of the first spray arm 1 and the second spray arm 4.

[0044] Specifically, the first spray arm 1 includes multiple first spray arm forks, which have the same structure and are arranged symmetrically at the center. In this embodiment, the number of first spray arm forks is preferably three. Each first spray arm fork is provided with a first drive hole and a first rinsing hole, and the number of first drive holes and first rinsing holes are both multiple. The first spray arm 1 includes a first housing 101 and a second housing 102, which can be interlocked to form a first cavity inside the first spray arm 1. The second housing 102 is provided with a water inlet 103, through which washing water for cleaning can flow into the first cavity. The first cavity covers each first spray arm fork, and washing water flows into each first spray arm fork during the rotation of the first spray arm 1.

[0045] It should be noted that after the first housing 101 and the second housing 102 are fastened together, the second housing 102 is located below the first housing 101.

[0046] Furthermore, the water inlet 103 is provided with an annular boss 104, which is distributed circumferentially along the water inlet 103. The first fixing member 2 is detachably provided on the water inlet 103. The first fixing member 2 includes a first main body 201, which is a cylindrical shape with open ends and a hollow interior. The interior space of the first main body 201 forms a first channel, which communicates with the first cavity so that washing water can enter the first cavity. The first fixing member 2 is provided with a first connecting part 202, which is specifically an external thread provided on part of the outer surface of the first main body 201. The inner wall surface of the annular boss 104 is provided with a third connecting part 105, which is specifically an internal thread that can be adapted to the first connecting part 202. This enables the first fixing member 2 and the first spray arm 1 to be connected by threads, ensuring the stability between the two. Under the impact of the washing water, the first spray arm 1 and the first fixing member 2 can rotate synchronously. It should be noted that the third connecting part 105 and the first connecting part 202 are connected by a matching thread, so that the first connecting part 202 can be connected to the third connecting part 105 in a way that is embedded in the annular boss 104. This shortens the overall height of the first fixing part 2 and the first spray arm 1 after assembly, thereby reducing the space occupied in the dishwasher and avoiding interference or collision with other structures inside the dishwasher.

[0047] The first main body 201 is provided with a connecting flange 203, which is disposed on the outer wall surface of the first main body 201 and surrounds the first main body 201. Preferably, the connecting flange 203 and the first main body 201 have an integral structure, and the connecting flange 203 is disposed to avoid the first connecting part 202. By providing the connecting flange 203, the maximum outer diameter of the first fastener 2 is increased, which facilitates the assembly and disassembly of the first fastener 2. Preferably, the edge of the connecting flange 203 is a polygonal edge.

[0048] A first stop portion 204 is provided on the side surface of the connecting flange 203 facing the first spray arm 1. The first stop portion 204 is specifically a pit or through hole provided on the surface of the connecting flange 203. There are multiple first stop portions 204, which are spaced apart. In this embodiment, the number of first stop portions 204 is preferably three, and the three first stop portions 204 are equally spaced.

[0049] The annular boss 104 has a second stop portion 106 on the surface facing the connecting flange 203. The number of second stop portions 106 is the same as the number of first stop portions 204 and they are arranged one by one. Specifically, the second stop portion 106 is a protrusion on the annular boss 104. The shape of the second stop portion 106 is adapted to the shape of the first stop portion 204. After the first fixing member 2 and the first spray arm 1 are screwed into place, each second stop portion 106 is embedded in a first stop portion 204, effectively preventing the first fixing member 2 from loosening.

[0050] Furthermore, the second fixing member 3 includes a second main body 301, which has a hollow internal structure with openings at both ends. When the dishwasher spray arm is in the installed state, the axis of the first main body 201 extends vertically. The first main body 201 has an upper end surface and a lower end surface distributed along its axial direction. The upper end surface of the first main body 201 is the upper surface of the second fixing member 3, and the lower end surface of the first main body 201 is the lower surface of the second fixing member 3. The height of the position of the upper surface of the second fixing member 3 is higher than the height of the lowest position surface of the second housing 102, so that part of the height of the upper end surface of the first main body 201 can be embedded in the first spray arm 1, further reducing the overall height of the dishwasher spray arm and thinning the dishwasher spray arm.

[0051] exist Figure 6In the shown state, the bottom opening diameter of the second main body 301 is smaller than the diameter of the second main body 301, thus forming a second connecting part 302, which is used to connect with the second spray arm 4; a second channel is formed inside the second main body 301 along its axial direction, which is connected to the first channel and the second cavity respectively, so that the washing water in the second spray arm 4 can flow into the first cavity through the second channel and the first channel; a fixed edge 303 is provided at the upper end of the second main body 301, the outer diameter of the fixed edge 303 is larger than the outer diameter of the second main body 301, and the outer diameter of the fixed edge 303 is smaller than the inner diameter of the first main body 201 of the first fixing member 2, so that when assembling the first fixing member 2 and the second fixing member 3, the part of the second main body 301 including the fixed edge 303 can be inserted into the interior of the first main body 201, and the second fixing member 3 can rotate relative to the first fixing member 2 inside the first fixing member 2, thereby effectively reducing the overall assembly height of the first fixing member 2 and the second fixing member 3.

[0052] Furthermore, the lubricating washer 5 is preferably an annular washer made of a lubricating material, which may be, but is not limited to, polytetrafluoroethylene, graphite, molybdenum disulfide, etc. The connecting flange 203 of the first fixing member 2 includes an inner ring and an outer ring coaxially distributed. The inner ring of the connecting flange 203 is located inside the first main body 201 and protrudes relative to the inner wall surface of the first main body 201 to form an annular protrusion 205. The annular protrusion 205 is coaxially arranged with the first main body 201. After the first fixing member 2 and the second fixing member 3 are assembled as one unit, the annular protrusion 205 is located below the fixing edge 303. The side surface of the annular protrusion 205 facing the fixing edge 303 is the first mounting surface 206, and the side surface of the fixing edge 303 facing the annular protrusion 205 is the second mounting surface 305. The lubricating washer 5 is disposed between the first mounting surface 206 and the second mounting surface 305 to improve the smoothness and stability of the relative rotation process of the first fixing member 2 and the second fixing member 3.

[0053] Furthermore, the second spray arm 4 includes multiple second spray arm forks, which have identical structures and are centrally symmetrically arranged. In this embodiment, the number of second spray arm forks is preferably three, and each second spray arm fork is provided with multiple second drive holes and multiple second flushing holes. At least one of the multiple second spray arm forks is provided with a mounting platform 401 for mounting the second fixing member 3. The mounting platform 401 communicates with the second cavity, thereby enabling the second cavity to communicate with the second channel. The mounting platform 401 is recessed towards the interior space of the first cavity. A fourth connecting part 402 is provided along the circumference of the mounting platform 401. The fourth connecting part 402 is an internal thread that can be adapted to the second connecting part 302. The diameter of the second connecting part 302 is smaller than the diameter of the second main body 301, so that the second connecting part 302 can be recessed into the mounting platform 401 and adapted to connect with the fourth connecting part 402 to fix the second fixing member 3 at the mounting platform 401. This also reduces the overall height of the second fixing member 3 and the second spray arm 4 after assembly, thereby further reducing the overall assembly height of the dishwasher spray arm, reducing the space occupied in the dishwasher, and avoiding interference with other structures or parts in the dishwasher.

[0054] The outer surface of the second main body 301 is an annular surface, and a stop surface 306 is partially formed on the outer surface of the second main body 301. The mounting platform 401 has an arc-shaped surface and is provided with a stop point 403. The stop point 403 is block-shaped and protrudes relative to the side wall of the mounting platform 401. When the second fixing member 3 is screwed into place relative to the mounting platform 401, the stop surface 306 and the stop point 403 are attached to each other and abut against each other, thereby strengthening the stability between the second fixing member 3 and the second spray arm 4 and preventing the second fixing member 3 from loosening under the impact of the washing water.

[0055] The second main body 301 is also provided with a third stop part 307, which is specifically a protrusion on the bottom end surface of the second main body 301. The mounting platform 401 is provided with a fourth stop part 404, which is specifically a notch formed by a partial missing part of the mounting platform 401. After the second fixing member 3 and the second spray arm 4 are installed in place, the third stop part 307 can be fitted and engaged with the fourth stop part 404 to achieve mutual locking between the second fixing member 3 and the mounting platform 401, effectively preventing the second fixing member 3 from loosening.

[0056] It should be noted that in this embodiment, both the first fixing member 2 and the second fixing member 3 are plastic parts with a certain degree of deformation capability, which facilitates the installation of the first fixing member 2 and the second fixing member 3.

[0057] Furthermore, the second spray arm 4 includes an upper housing 405 and a lower housing 406 that can be interlocked. After the upper housing 405 and the lower housing 406 are interlocked, a second cavity is formed between them. The mounting platform 401 is located near the end of the upper housing 405 away from the center of symmetry. The lower housing 406 is provided with a boss 407, which faces the mounting platform 401 so that the boss 407 can face the water inlet 103 area of ​​the first spray arm 1. The boss 407 protrudes towards the external space of the first cavity, so that the thickness of the first cavity at the boss 407 is greater than the thickness at other locations of the first cavity. This structure helps to expand the area at the water inlet 103, reduce the pressure loss of the incoming water, ensure the washing water supply of the second spray arm 4, and thus ensure the cleaning effect of the second spray arm 4.

[0058] Furthermore, the dishwasher spray arm also includes a spray arm fixing seat 6. The lower housing 406 of the second spray arm 4 has a water inlet 408 at its center. The spray arm fixing seat 6 is connected to the water inlet 408, and the connection can be a threaded connection. The spray arm fixing seat 6 is used to connect to the dishwasher's water system or other designated locations within the dishwasher. The spray arm fixing seat 6 includes a third main body 601 and a connector 602. The third main body 601 is cylindrical in shape, with a hollow interior forming a third channel. This third channel communicates with the water inlet 408, thereby supplying water to the second cavity.

[0059] A connector 602 is disposed on the side of the third main body 601. Specifically, the connector 602 is a claw. Located on the side of the fixed working body, preferably, the connector 602 and the third main body 601 are integrally formed. A slot is provided at another designated location in the water system or dishwasher for connection with the spray arm mounting base 6. A locking protrusion 603 is provided at the end of the connector 602 away from the third main body 601. The locking protrusion 603 can engage with and move within the slot, allowing the second spray arm 4 to rotate smoothly. It should be noted that there are at least two connectors 602, and all connectors 602 are evenly spaced along the circumference of the third main body 601.

[0060] In summary, the dishwasher spray arm provided in this application can realize a cleaning mode that combines basic washing and intensive washing, expands the cleaning range, reduces cleaning dead corners, and ensures the cleaning effect on the items in the dishwasher. At the same time, compared with traditional spray arms, this dishwasher spray arm has been thinned, which effectively reduces the overall thickness after assembly and avoids occupying too much space in the dishwasher drum.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A dishwasher spray arm, characterized in that, The utility model relates to a dish-washing machine spray arm, comprising: a first spray arm; a first fixing part detachably arranged on the first spray arm; a second fixing part rotationally connected with the first fixing part; the first fixing part and the second fixing part are arranged in a sleeved manner; a second spray arm, and the second fixing part is arranged on the second spray arm.

2. The dishwasher spray arm of claim 1, wherein, When the dish-washing machine spray arm is in an installed state, the height of the position where the upper surface of the second fixing part is located is higher than the height of the position where the lower shell of the first spray arm is located.

3. The dishwasher spray arm of claim 1, wherein, The first fixing part comprises: a first connecting part connected with the first spray arm; a first channel in communication with the internal space of the first spray arm; part of the second fixing part is arranged in the first channel.

4. The dishwasher spray arm of claim 3, wherein, The second fixing part comprises: a second connecting part connected with the second spray arm; a second channel in communication with the internal space of the first spray arm and the second spray arm.

5. The dishwasher spray arm of claim 4, wherein, The second spray arm is provided with a mounting sink, and part of the second connecting part is connected with the second spray arm in the mounting sink.

6. The dishwasher spray arm of claim 3, wherein, The dish-washing machine spray arm further comprises a lubricating gasket, the first fixing part further comprises a connecting flange, the second fixing part further comprises a fixing edge, and the lubricating gasket is arranged between the connecting flange and the fixing edge.

7. The dishwasher spray arm of claim 6, wherein, The first spray arm is provided with a water inlet, the water inlet is provided with a third connecting part, and the first connecting part is adaptively connected with the third connecting part in the water inlet.

8. The dishwasher spray arm of claim 7, wherein, The connecting flange is provided with a first stop part, the water inlet is provided with a second stop part, the shape of the second stop part is adapted to the shape of the first stop part, and the second stop part can be embedded into the first stop part.

9. The dishwasher spray arm according to any one of claims 1 to 8, characterized in that The second fixing part is provided with a stop surface, the second spray arm is provided with a stop point, after the second fixing part and the second spray arm are installed, the stop surface abuts against the stop point. The second fixing part is provided with a third stop part, the second spray arm is provided with a fourth stop part, the shape of the fourth stop part is adapted to the shape of the third stop part, after the second fixing part and the second spray arm are installed, the third stop part is adaptively connected with the fourth stop part.

10. The dishwasher spray arm according to any one of claims 1 to 8, characterized in that The second spray arm comprises an upper shell and a lower shell which are mutually buckled, the lower shell is provided with a boss which protrudes towards the side surface of the lower shell away from the upper shell.

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