A spray arm for a dishwasher and a dishwasher

Abstract

The application discloses a spraying arm for a dish washing machine, which is applied to the technical field of kitchen appliances and comprises a connecting arm, a connecting part, at least three branch spraying arms and at least three buckle members, wherein the branch spraying arms and the buckle members are distributed along the circumference of the connecting part; one end of each branch spraying arm is connected with the connecting part, and the other end extends towards the direction away from the center of the connecting part; the connecting arm is communicated with each branch spraying arm, and the buckle members are connected to the connecting part. According to the application, at least three branch spraying arms and at least three buckle members are arranged, and the branch spraying arms and the buckle members are distributed along the circumference of the connecting part, so that each branch spraying arm has a corresponding fixing point, the stability of the spraying arm in the running process is guaranteed, the balance and stability of the overall structure are enhanced, the inclination of the spraying arm in the running process is avoided, and the use efficiency is improved.

Description

Technical Field

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

[0002] Dishwashers are devices that automatically clean tableware such as bowls, chopsticks, plates, dishes, knives, and forks. With economic development and social progress, dishwashers are gradually becoming more intelligent. Using a dishwasher to clean tableware can save personal time. Dishwashers have strong cleaning power and can thoroughly eliminate bacteria on the surface of tableware. They can meet the needs of multiple functions such as cleaning, drying, and sterilization, providing great convenience to people's daily lives.

[0003] Current dishwashers typically clean dishes by filling the inner drum with water and then using a circulating water pump to spray water into the spray nozzles. The spray arms play a crucial role in the dishwasher's operation. During operation, the wash pump delivers high-pressure water to the spray arms, from which it sprays out to rinse the dishes before returning to the water cup at the bottom of the dishwasher. The wash pump then pumps the returned water back to the spray arms, completing one cycle until the dishes are clean.

[0004] Currently, most dishwasher spray arms are fixed by two clamps that snap into the spray arm holder. However, during operation, when the two clamps bear the weight of the spray arm and the inertial force and wind force generated during operation, if the force distribution between the clamps is uneven, it can easily lead to excessive force on one side, causing the spray arm to tilt and reducing its stability.

[0005] Therefore, the structure of the spray arm in the prior art has room for further improvement. Utility Model Content

[0006] In view of this, and in response to the technical problem that the two-claw structure in the prior art is not stable enough, which makes the spray arm prone to tilting during operation, this application provides a spray arm for a dishwasher and a dishwasher. By changing the structure of the claws, the structure of the spray arm is made more stable, the force distribution is more uniform, the tilting of the spray arm during operation is avoided, and the usage efficiency is improved.

[0007] To achieve the above objectives, this application provides the following technical solution: a spray arm for a dishwasher, comprising: The component includes a connecting arm, a connecting portion, at least three branch spray arms, and at least three fastening elements, wherein the branch spray arms and fastening elements are distributed circumferentially along the connecting portion. Each of the branch spray arms is connected at one end to the connecting part, and the other end extends in a direction away from the center of the connecting part; The connecting arm is connected to each branch spray arm, and the fastener is connected to the connecting part.

[0008] Compared with the prior art, the dishwasher spray arm of this application is provided with at least three branch spray arms and at least three fasteners, and the branch spray arms and fasteners are distributed circumferentially along the connecting part, thereby ensuring that each branch spray arm has a corresponding fixing point, which helps to ensure the stability of the spray arm during operation, enhances the balance and stability of the overall structure, avoids the tilting of the spray arm during operation, and improves the efficiency of use.

[0009] Preferably, the number of branch spray arms is the same as the number of fasteners.

[0010] In this embodiment, by setting the number of branch spray arms to be the same as the number of fasteners, that is, each branch spray arm corresponds to one fastener, the force transmission is ensured to be more uniform, thereby improving the stability of the spray arm during operation and ensuring the reliability of long-term use.

[0011] Preferably, the connection between the fastener and the connecting part is located on the extension line of the center line of the branch spray arm.

[0012] In this embodiment, the connection between the fastener and the connecting part is located on the extension line of the center line of the branch spray arm. At this time, the tension of the fastener is the greatest, which can prevent the spray arm from tilting during operation, thereby improving the stability of the spray arm during operation, reducing the maintenance frequency, and improving the efficiency of use.

[0013] Preferably, the fastener is located at the midpoint between two adjacent branch spray arms.

[0014] In this embodiment, the design, located at the center of the connection between two adjacent branch spray arms, allows for a more uniform distribution of the force on the fasteners, further improving the stability of the spray arms.

[0015] Preferably, the end of the fastener away from the branch spray arm is in the shape of a hook, the hook part includes a flat or inclined surface, and the rest is an arc surface; The cross-section of the fastener is L-shaped.

[0016] In this embodiment, the hook shape can effectively distribute the force. When the plane or inclined surface of the hook part comes into contact with the component, it can form a stable support point, while the arc surface can reduce friction and wear and extend the service life.

[0017] Preferably, the fastener includes a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are fixedly connected, and the hook shape is provided at the end of the first connecting piece away from the connecting part; The second connecting piece is inclined from top to bottom on the side away from the first connecting piece.

[0018] In this embodiment, the second connecting piece is inclined from top to bottom on the side away from the first connecting piece, that is, the diameter of the second connecting piece on the side away from the first connecting piece gradually decreases from top to bottom. This can reduce local stress concentration of the fastener, improve the rigidity and strength of the fastener, and extend the service life of the fastener.

[0019] Preferably, the connection point between the second connecting piece and the connecting part is located on the extension line of the center line of the branch spray arm; or, The second connecting piece is located in the middle position between two adjacent branch spray arms.

[0020] In this embodiment, the appropriate positioning can ensure that the force transmission between the fastener and the branch spray arm is more uniform, effectively improving the stability and load-bearing capacity of the overall structure, while avoiding deformation or damage caused by eccentric force.

[0021] Preferably, the outer side wall of the connecting arm is provided with at least one spaced annular rib; When there are two annular ribs, the hook portion of the fastener is positioned between the two annular ribs.

[0022] In this embodiment, by setting the hook part in a reasonable position, the spray arm can be made more stable during operation, and the annular rib plays a role in positioning and limiting, which can prevent the connecting arm from moving radially or axially in the internal components of the dishwasher, avoid loosening and shaking, and improve the rigidity of the overall structure.

[0023] A dishwasher includes a spray arm and a spray arm seat as described above, wherein the spray arm seat is sleeved on the outer periphery of a connecting arm and communicates with the connecting arm; The spray arm seat has a channel, and the annular rib is in close contact with the inner wall of the channel; The channel is provided with an annular protrusion, which is a radial protrusion and is used to assist in supporting the connecting arm.

[0024] Compared with the prior art, the dishwasher of this application is designed with a spray arm and a spray arm seat. The spray arm seat has a channel, and the annular rib is close to the inner wall of the channel. The annular rib can not only enhance the structural strength of the connecting arm, but also reduce the friction between the connecting arm and the spray arm, effectively disperse the impact force of the water flow on the connecting arm, thereby extending the service life of the spray arm.

[0025] Preferably, the spray arm seat has an annular protrusion on the side facing the fastener, and the bottom of the annular protrusion abuts against the top of the protruding side of the hook portion of the fastener to achieve contact between the fastener and the spray arm seat.

[0026] In this embodiment, the tight fit between the hook portion of the fastener and the annular protrusion can stably hold the spray arm in place, ensuring uniform force distribution at the connection point. This allows the fastener to withstand vibrations and impacts generated during operation, reducing the risk of localized stress concentration, loosening, or damage, while also saving materials and lowering costs. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of a dishwasher spray arm provided in an embodiment of this application; Figure 2 This is an exploded structural diagram of a dishwasher spray arm provided in an embodiment of this application; Figure 3 A bottom view of the spray arm provided in one embodiment of this application; Figure 4 for Figure 3 A magnified schematic diagram of the structure of part A in the diagram; Figure 5 This is a schematic diagram of the left side of the spray arm for a dishwasher provided in an embodiment of this application; Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure of the middle BB section; Figure 7 for Figure 6 A magnified schematic diagram of the structure of C.

[0028] In the diagram: 1. Spray arm base; 2. Spray arm; 11. Annular protrusion; 12. Channel; 14. Annular bump; 21. Connecting arm; 22. Connecting part; 23. Branch spray arm; 24. Fastener; 25. Limiting block; 211. Annular rib; 241. First connecting piece; 242. Second connecting piece. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0030] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0031] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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, the above terms should not be construed as limitations on this application.

[0032] The present application will now be described in further detail with reference to the accompanying drawings, see below. Figures 1 to 7 illustrate.

[0033] Example 1 This embodiment provides a dishwasher spray arm, which is applied in the field of kitchen appliance technology. Specifically, it includes a connecting arm 21, a connecting part 22, at least three branch spray arms 23, and at least three fasteners 24. The connecting arm 21 has a cylindrical structure. The branch spray arms 23 and the fasteners 24 are distributed circumferentially along the connecting part 22. One end of each branch spray arm 23 is connected to the connecting part 22, and the other end extends away from the center of the connecting part 22. The connecting arm 21 is connected to each branch spray arm 23, that is, the connecting part 22 is connected to the connecting arm 21 and each branch spray arm 23. The connecting arm 21 is connected to the center of the connecting part 22, and the fasteners 24 are connected to the connecting part 22, that is, the top of the fasteners 24 is connected to the bottom of the connecting part 22. By setting at least three branch spray arms 23 and at least three fasteners 24, and with the branch spray arms 23 and fasteners 24 distributed circumferentially along the connecting part 22, it is ensured that each branch spray arm 23 has a corresponding fixing point, which helps to ensure the stability of the spray arm 2 during operation, enhances the balance and stability of the overall structure, avoids the tilting of the spray arm 2 during operation, and improves the efficiency of use.

[0034] The number of branch spray arms 23 is the same as the number of fasteners 24, that is, each branch spray arm 23 corresponds to one fastener 24, which ensures that the force is transmitted more evenly, thereby improving the stability of the spray arm 2 during operation and ensuring the reliability of long-term use.

[0035] The branch spray arm 23 has a hollow structure and multiple nozzle holes. When the dishwasher is running, water will enter the hollow pipe of the branch spray arm 23 from the spray arm seat 1 and spray out along the nozzle holes to achieve efficient cleaning and disinfection.

[0036] Furthermore, such as Figures 1 to 4As shown, the connection between the fastener 24 and the connecting part 22 is located on the extension line of the center line of the branch spray arm 23. At this time, the tension of the fastener 24 is the greatest, which can prevent the spray arm 2 from tilting during operation, thereby improving the stability of the spray arm 2 during operation, reducing the maintenance frequency, and improving the efficiency of use.

[0037] Furthermore, such as Figures 5 to 7 As shown, the end of the fastener 24 away from the branch spray arm 23 is in the shape of a hook. The hook part includes a flat or inclined surface, and the rest is an arc surface. The cross-section of the fastener 24 is an L-shaped structure. The hook shape can effectively distribute the force. When the flat or inclined surface of the hook part contacts the component, it can form a stable support point, while the arc surface can reduce friction and wear and extend the service life.

[0038] Among them, such as Figures 4 to 7 As shown, the fastener 24 includes a first connecting piece 241 and a second connecting piece 242. The first connecting piece 241 and the second connecting piece 242 are fixedly connected, and the connection angle between the first connecting piece 241 and the second connecting piece 242 is 90°. The thickness of the first connecting piece 241 and the second connecting piece 242 is basically the same, which can better withstand external forces and prevent deformation. The hook shape is set at the end of the first connecting piece 241 away from the connecting part 22. The side of the second connecting piece 242 away from the first connecting piece 241 is inclined from top to bottom, that is, the diameter of the side of the second connecting piece 242 away from the first connecting piece 241 gradually decreases from top to bottom. This can reduce the local stress concentration of the fastener 24, improve the rigidity and strength of the fastener 24, and extend the service life of the fastener 24.

[0039] The connection between the second connecting piece 242 and the connecting part 22 is located on the extension line of the center line of the branch spray arm 23. The appropriate position setting can ensure that the force transmission between the fastener 24 and the branch spray arm 23 is more uniform, effectively improving the stability and load-bearing capacity of the overall structure, while avoiding deformation or damage caused by eccentric force.

[0040] Furthermore, such as Figure 7 As shown, at least one spaced annular rib 211 is provided on the outer side wall of the connecting arm 21; when there are two annular ribs 211, the hook part of the fastener 24 is located between the two annular ribs 211. By setting the hook part in a reasonable position, the spray arm 2 can be made more stable during operation, and the annular ribs 211 play a role in positioning and limiting, which can prevent the connecting arm 21 from moving radially or axially in the internal components of the dishwasher, avoid loosening and shaking, and improve the rigidity of the overall structure.

[0041] A dishwasher includes a spray arm 2 and a spray arm seat 1 as described in the above embodiment. The spray arm seat 1 is sleeved on the outer periphery of a connecting arm 21 and communicates with the connecting arm 21. A channel 12 is provided inside the spray arm seat 1, and an annular rib 211 abuts against the inner wall of the channel 12. The annular rib 211 reduces friction between the connecting arm 21 and the spray arm 2, thereby extending the service life of the spray arm 2. An annular protrusion 14 is provided inside the channel 12. The annular protrusion 14 is radially protruding and is used to assist in supporting the connecting arm 21. The annular protrusion 14 can position and limit the connecting arm 21, preventing the spray arm 2 from moving downwards during operation.

[0042] Furthermore, the spray arm seat 1 has an annular protrusion 11 on the side facing the fastener 24. The bottom of the annular protrusion 11 abuts against the top of the protruding side of the hook portion of the fastener 24, that is, the flat or inclined section of the hook portion, so as to achieve the contact between the fastener 24 and the spray arm seat 1, which can prevent the spray arm seat 1 from loosening during use. Through the tight cooperation between the hook portion of the fastener 24 and the annular protrusion 11, the spray arm 2 can be stably pulled up, the force at the connection is even, and it can withstand the vibration and impact generated by the spray arm 2 during operation, reducing the risk of local stress concentration and loosening or damage, while saving materials and reducing costs.

[0043] Example 2 The difference between this embodiment and Embodiment 1 is that the fastener 24 is located in the middle position between two adjacent branch spray arms 23, and the second connecting piece 242 is located in the middle position between two adjacent branch spray arms 23, that is, in the center position of the connecting part 22 between two adjacent branch spray arms 23. This design can make the force distribution on the fastener 24 more uniform and further improve the stability of the spray arm 2.

[0044] Example 3 The difference between this embodiment and Implementation 1 is that, Figure 4 , Figure 7 As shown, the fastener 24 has a limiting block 25 on one side facing the connecting arm 21. The limiting block 25 is located between the spray arm and the spray arm base 1. The other side of the limiting block 25 is fixedly connected to the connecting arm 21, or the other side of the limiting block 25 is fixedly connected to the connecting part 22. The limiting block 25 is used to limit the spray arm 2. The limiting block 25 is connected to the second connecting piece 242. The limiting block 25 and the second connecting piece 242 are on the same straight line. By setting the limiting block 25, the strength of the fastener 24 can be enhanced, the risk of damage can be reduced, and maintenance costs can be reduced.

[0045] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A spray arm for a dishwasher, characterized in that, include: The component includes a connecting arm (21), a connecting portion (22), at least three branch spray arms (23), and at least three fasteners (24), wherein the branch spray arms (23) and the fasteners (24) are distributed circumferentially along the connecting portion (22); Each of the branch spray arms (23) is connected at one end to the connecting part (22), and the other end extends in a direction away from the center of the connecting part (22); The connecting arm (21) is connected to each branch spray arm (23), and the fastener (24) is connected to the connecting part (22).

2. The spray arm for a dishwasher according to claim 1, characterized in that, The number of branch spray arms (23) is the same as the number of fasteners (24).

3. The spray arm for a dishwasher according to claim 1, characterized in that, The connection between the buckle (24) and the connecting part (22) is located on the extension line of the center line of the branch spray arm (23).

4. The spray arm for a dishwasher according to claim 1, characterized in that, The fastener (24) is located in the middle position between two adjacent branch spray arms (23).

5. The spray arm for a dishwasher according to claim 3 or 4, characterized in that, The end of the fastener (24) away from the branch spray arm (23) is in the shape of a hook, the hook part includes a flat or inclined surface, and the rest is an arc surface; The cross-section of the buckle (24) is L-shaped.

6. The spray arm for a dishwasher according to claim 5, characterized in that, The fastener (24) includes a first connecting piece (241) and a second connecting piece (242), the first connecting piece (241) and the second connecting piece (242) are fixedly connected, and the hook shape is provided at one end of the first connecting piece (241) away from the connecting part (22); The second connecting piece (242) is inclined from top to bottom on the side away from the first connecting piece (241).

7. The spray arm for a dishwasher according to claim 6, characterized in that, The connection point between the second connecting piece (242) and the connecting part (22) is located on the extension line of the center line of the branch spray arm (23); or, The second connecting piece (242) is located in the middle position between two adjacent branch spray arms (23).

8. The spray arm for a dishwasher according to claim 1, characterized in that, The outer wall of the connecting arm (21) is provided with at least one spaced annular rib (211). When there are two annular ribs (211), the hook portion of the buckle (24) is positioned between the two annular ribs (211).

9. A dishwasher, characterized in that, Including the spray arm (2) as described in claim 8, the dishwasher also includes a spray arm seat (1), which is sleeved on the outer periphery of the connecting arm (21) and communicates with the connecting arm (21); The spray arm seat (1) is provided with a channel (12), and the annular rib (211) is in close contact with the inner wall of the channel (12); The channel (12) is provided with an annular protrusion (14), which is a radial protrusion and is used to assist in supporting the connecting arm (21).

10. The dishwasher according to claim 9, characterized in that, The spray arm seat (1) has an annular protrusion (11) on the side facing the buckle (24). The bottom of the annular protrusion (11) abuts against the top of the protruding side of the hook portion of the buckle (24) to achieve the contact between the buckle (24) and the spray arm seat (1).

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