Spraying device and dish washing machine comprising same

Abstract

The utility model relates to the technical field of washing equipment, in particular to a spraying device and a dish-washing machine comprising the spraying device, and aims to solve the problem that an existing dish-washing machine has washing dead angles. Therefore, the spraying device comprises a fixing component, a spraying arm assembly and a driving assembly, the spraying arm assembly comprises a driving arm, a spraying arm and a transmission mechanism, the driving arm is rotatably installed on the fixing component, the spraying arm is rotatably installed on the driving arm, and the driving arm is in transmission connection with the spraying arm through the transmission mechanism. The driving assembly can drive the driving arm to rotate, the driving arm and the spraying arm are in transmission connection through the transmission mechanism, the spraying arm can rotate relative to the driving arm along with rotation of the driving arm, and the projection area of the spraying area of the spraying arm is close to a rectangle. Therefore, the spraying range of the spraying device is expanded, washing dead angles of the dish-washing machine are eliminated, and the washing effect of the dish-washing machine is improved.

Description

Technical Field

[0001] This utility model relates to the field of washing equipment technology, specifically providing a spray device and a dishwasher including the spray device. Background Technology

[0002] Dishwashers are one of the most common appliances nowadays, used in the kitchen to wash dishes and other tableware after meals. They can also be used to wash some fruits and vegetables, greatly facilitating people's lives and freeing them from the frequent manual washing of dishes, fruits, and vegetables.

[0003] In current dishwasher designs, spray arms typically use a spray system to wash dishes, fruits, and vegetables. The spray arms usually have multiple water outlets. Driven by a circulating pump, washing water is introduced into the spray arms and then sprayed onto the dishes, fruits, and vegetables. The cross-sectional shape of the water jet from the spray arms' outlets often matches the shape of the outlets themselves, resulting in a columnar spray. As the spray arms rotate, multiple rings corresponding to the positions of the spray arms' outlets are formed on various planes within the height range of the area containing the dishes, fruits, and vegetables.

[0004] However, since the bottom of the dishwasher's inner tub is usually rectangular or square, and the spray arms of current conventional dishwashers typically spray a circular area during operation, they cannot effectively spray and wash dishes and other laundry items at the four corners of the inner tub, resulting in washing dead zones and thus affecting the dishwasher's washing performance.

[0005] Therefore, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0006] The present invention aims to solve the above-mentioned technical problem, namely, to solve the problem of blind spots in washing in existing dishwashers.

[0007] In a first aspect, the present invention provides a spraying device, including a fixed component and a spraying arm assembly and a drive assembly mounted on the fixed component. The spraying arm assembly includes a drive arm, a spraying arm, and a transmission mechanism. The drive arm is rotatably mounted on the fixed component, and the spraying arm is rotatably mounted on the drive arm. The transmission mechanism drives the drive arm and the spraying arm to rotate relative to the drive arm as the drive arm rotates. The rotation axis of the drive arm is parallel to but does not coincide with the rotation axis of the spraying arm. The drive assembly can drive the drive arm to rotate relative to the fixed component.

[0008] With the above technical solution adopted, the spraying device of this utility model connects the drive arm and the spraying arm through a transmission mechanism, so that the spraying arm can rotate relative to the drive arm as the drive arm rotates. That is, the spraying arm can rotate on its own axis while revolving around the fixed component, so that the projected area of ​​the spraying area of ​​the spraying arm is close to a rectangle, thereby expanding the spraying range of the spraying device, eliminating the washing dead corners of the dishwasher, and improving the washing effect of the dishwasher.

[0009] In the preferred embodiment of the above-mentioned spraying device, the transmission mechanism includes a first transmission gear, a second transmission gear, a third transmission gear, a first rotating shaft, and a second rotating shaft. An external gear meshing with the first transmission gear is provided on the fixed component. The axis of the external gear coincides with the rotation axis of the drive arm. The drive arm can rotate around the external gear with the first transmission gear. Both the first and second rotating shafts are rotatably mounted on the drive arm. Both the first and second rotating shafts are parallel to the rotation axis of the drive arm. The first transmission gear is fixedly mounted on the first rotating shaft. The second and third transmission gears are both fixedly mounted on the second rotating shaft and are spaced apart along the length of the second rotating shaft. An internal gear meshing with the third transmission gear is provided on the spraying arm. The axis of the internal gear coincides with the rotation axis of the spraying arm. The second transmission gear meshes with the first transmission gear.

[0010] With the above technical solution adopted, this utility model has a simple structure and is easy to install. It is designed so that the transmission mechanism is set up so that the first transmission gear rotates around the external gear to drive the second transmission gear and the third transmission gear to rotate, thereby driving the internal gear and the spray arm to rotate.

[0011] In the preferred embodiment of the above-mentioned spraying device, a connecting column is provided on the drive arm, a mounting boss is provided on the fixing component, a mounting hole is provided on the mounting boss, the connecting column is inserted into the mounting hole and can rotate in the mounting hole, one end of the connecting column is connected to the drive assembly, and the external gear is provided on the mounting boss.

[0012] By adopting the above technical solution, this utility model provides a connecting column on the drive arm and inserts the connecting column into the mounting hole of the mounting boss, which makes the drive arm firmly fixed, easy to install, more stable in rotation, and less prone to eccentric vibration.

[0013] In the preferred embodiment of the above-mentioned spraying device, the connecting column and the fixing member are respectively provided with a first limiting structure and a second limiting structure to restrict the movement of the connecting column relative to the fixing member along the rotation axis of the connecting column.

[0014] By adopting the above technical solution, this utility model provides a first limiting structure and a second limiting structure that cooperate with each other on the connecting column and the fixed component, so that the connecting column cannot move in the vertical direction when rotating, thereby making the spray arm more stable when rotating.

[0015] In the preferred embodiment of the above-mentioned spraying device, the first limiting structure is a first limiting protrusion provided on the connecting column, and the mounting boss has a groove communicating with the mounting hole at one end near the spraying arm. The second limiting structure is a limiting plate provided in the groove and extending along the length direction of the mounting hole. One end of the limiting plate is fixedly connected to the groove or integrally provided, and the other end of the limiting plate is a free end. The other end of the limiting plate is provided with a second limiting protrusion extending toward the mounting hole. When the connecting column is inserted into the mounting hole, the first limiting protrusion enters the mounting hole by squeezing the second limiting protrusion. The second limiting protrusion can press against the first limiting protrusion to restrict the movement of the connecting column relative to the mounting boss along the rotation axis direction of the connecting column.

[0016] By adopting the above technical solution, this utility model sets the first limiting structure as a first limiting protrusion on the connecting column and the second limiting structure as a limiting plate in the groove. The structure is simple, facilitates the installation and disassembly of the spray arm, and makes the spray arm more stable when rotating.

[0017] In the preferred embodiment of the above-mentioned spraying device, the first limiting protrusion is annular and is arranged in a circle around the circumference of the connecting column, and there are multiple grooves and limiting plates arranged opposite to each other, with the multiple grooves and limiting plates distributed at intervals along the circumference of the mounting hole.

[0018] By adopting the above technical solution, this utility model improves the limiting effect and further enhances the stability of the spraying device by setting the first limiting protrusion as annular and arranged around the circumference of the connecting column, and by having multiple grooves and limiting plates arranged opposite to each other, thereby increasing the size and number of the first limiting structure and the second limiting structure.

[0019] In the preferred embodiment of the above-mentioned spraying device, the diameter of the connecting column gradually increases along the direction close to the spraying arm; and / or the outer wall of the connecting column is provided with a slip ring extending circumferentially along the outer wall of the connecting column, and the mounting hole is provided with a slide platform opposite to the slip ring. After the connecting column is inserted into the mounting hole, the slip ring presses against the slide platform and can slide along the slide platform.

[0020] By adopting the above technical solution, this utility model sets the diameter of the connecting column to gradually increase along the direction close to the spray arm, which facilitates the installation of the drive arm and improves the rotation efficiency of the drive arm. By setting a slip ring extending circumferentially along the outer wall of the connecting column on the outer wall, and setting a slide platform opposite to the slip ring in the mounting hole, the slip ring presses against the slide platform and can slide along the slide platform when the drive arm rotates, which prevents the drive arm from eccentrically vibrating and improves the rotation efficiency of the drive arm.

[0021] In the preferred embodiment of the above-mentioned spraying device, there are multiple slip rings, and the multiple slip rings are distributed at intervals along the length direction of the connecting column.

[0022] By adopting the above technical solution, this utility model increases the number of slip rings by setting the number of slip rings to multiple, thereby further improving the rotation efficiency of the drive arm.

[0023] In a preferred embodiment of the above-mentioned spraying device, the driving assembly includes a driving member, a worm gear, a connecting gear, and a driving gear. The driving member is mounted on the fixed member, the worm gear is fixedly connected to the driving shaft of the driving member, the connecting gear and the driving gear are meshed and rotatably mounted on the fixed member, the worm gear meshes with the connecting gear, and the driving gear is drivenly connected to the driving arm. Alternatively, the driving assembly includes a driving member, a first gear, a second gear, and a driving gear. The driving member is mounted on the fixed member, the first gear is fixedly connected to the driving shaft of the driving member, the second gear and the driving gear are meshed and rotatably mounted on the fixed member, the first gear meshes with the second gear, and the driving gear is drivenly connected to the driving arm.

[0024] By adopting the above technical solution, this utility model sets the drive assembly to drive the worm gear to rotate, which in turn drives the connecting gear and the drive gear to rotate, thereby driving the drive arm to rotate. Alternatively, the drive assembly can drive the first gear to rotate, which in turn drives the second gear and the drive gear to rotate, thereby driving the drive arm to rotate. The structure is simple and easy to install and disassemble. Compared with traditional water spray drive, this utility model saves more water and improves the spraying efficiency of the spraying device by driving the spray assembly to rotate. It provides two structural methods of the drive assembly, giving users more choices.

[0025] In a second aspect, the present invention also provides a dishwasher, which includes the above-described spraying device.

[0026] With the above technical solution adopted, the dishwasher of this utility model, by including the above-mentioned spray device, has the beneficial effects of the above-mentioned spray device. Compared with the dishwasher before the improvement, the dishwasher of this utility model connects the drive arm and the spray arm through a transmission mechanism, so that the spray arm can rotate relative to the drive arm as the drive arm rotates. That is, the spray arm can rotate on its own axis while revolving around the fixed component, so that the projected area of ​​the spray area of ​​the spray arm is close to a rectangle, thereby expanding the spray range of the spray device, eliminating the washing dead corners of the dishwasher, and improving the washing effect of the dishwasher. Attached Figure Description

[0027] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0028] Figure 1 This is a schematic diagram of the structure of the spraying device of this utility model;

[0029] Figure 2 This is a structural explosion of the spray device of this utility model. Figure 1 ;

[0030] Figure 3 This is a structural explosion of the spray device of this utility model. Figure 2 ;

[0031] Figure 4 This is a partial structural explosion of the spray device of this utility model. Figure 1 ;

[0032] Figure 5 This is a partial structural explosion of the spray device of this utility model. Figure 2 ;

[0033] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0034] List of reference numerals in the attached diagram:

[0035] 1. Water tank; 11. External gear; 12. Mounting boss; 13. Mounting hole; 14. Draining board;

[0036] 121. Groove; 122. Limiting plate; 123. Slide table; 1221. Second limiting protrusion;

[0037] 21. Drive arm; 22. Spray arm; 23. Transmission mechanism;

[0038] 211. Connecting column; 221. Internal gear; 231. First transmission gear; 232. Second transmission gear; 233. Third transmission gear; 234. First rotating shaft; 235. Second rotating shaft;

[0039] 2111, First limiting protrusion; 2112, Slip ring; 2113, Slot;

[0040] 3. Drive assembly; 31. Drive component; 32. Worm gear; 33. Connecting gear; 34. Drive gear; 341. Locking pin. Detailed Implementation

[0041] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0042] It should be noted that in the description of this utility model, terms such as "inner," "outer," "upper," "lower," "top," and "bottom," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] Furthermore, it should be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connect," and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] As indicated in the background art, existing dishwashers have the problem of washing dead corners. This utility model provides a spray device and a dishwasher including the spray device. It aims to connect the drive arm and the spray arm through a transmission mechanism, so that the spray arm can rotate relative to the drive arm as the drive arm rotates, making the projected area of ​​the spray area of ​​the spray arm close to a rectangle, thereby expanding the spray range of the spray device, eliminating the washing dead corners of the dishwasher, and improving the washing effect of the dishwasher.

[0045] First, this utility model provides a dishwasher. The dishwasher has a washing chamber, which is rectangular. A water tank 1 is provided at the bottom of the washing chamber. The water tank 1 is used to hold washing water. A spray device is installed on the water tank 1 and can rotate relative to the water tank 1. The spray device has spray holes. The spray device is connected to the water tank 1 through a pipeline. The water in the water tank 1 is pumped to the spray holes by a water pump to spray out and clean the tableware in the washing chamber.

[0046] Specifically, such as Figures 1 to 3As shown, the spraying device of this utility model includes a fixed component and a spraying arm assembly and a drive assembly 3 mounted on the fixed component. The spraying arm assembly includes a drive arm 21, a spraying arm 22 and a transmission mechanism 23. The drive arm 21 is rotatably mounted on the fixed component, and the spraying arm 22 is rotatably mounted on the drive arm 21. The transmission mechanism 23 drives the drive arm 21 and the spraying arm 22 so that the spraying arm 22 can rotate relative to the drive arm 21 as the drive arm 21 rotates. The rotation axis of the drive arm 21 is parallel to but does not coincide with the rotation axis of the spraying arm 22. The drive assembly 3 can drive the drive arm 21 to rotate relative to the fixed component.

[0047] For example, such as Figures 1 to 3 As shown, the fixing component of this utility model is a water tank 1, which is fixedly installed at the bottom of the washing chamber. The drive arm 21 is rotatably mounted on the water tank 1 and is the main support and transmission component of the spray arm assembly. It is responsible for transmitting the power of the drive assembly 3 to the spray arm 22 and guiding the spray arm 22 to rotate. The spray arm 22 is rotatably mounted on the drive arm 21. Multiple spray holes on the spray arm 22 are used to evenly spray liquid (such as water, detergent, etc.) onto the target area. The transmission mechanism 23 is used to transmit the rotational power of the drive arm 21 to the spray arm 22 and ensure that the spray arm 22 can rotate independently relative to the drive arm 21. When the spraying device is working, the drive assembly 3... First, the drive arm 21 is started and rotated relative to the water tank 1. At the same time, the transmission mechanism 23 transmits the rotational power of the drive arm 21 to the spray arm 22, so that the spray arm 22 can rotate independently relative to the drive arm 21. Since the rotation axes of the drive arm 21 and the spray arm 22 are parallel but not coincident, the spray arm 22 can form a complex spray trajectory during rotation. Those skilled in the art can set the transmission ratio of the transmission mechanism 23 so that the projected area of ​​the spray area of ​​the spray arm 22 is close to the rectangle of the washing chamber, thereby achieving a uniform and efficient spraying effect, expanding the spraying range of the spraying device, eliminating the washing dead corners of the dishwasher, and improving the washing effect of the dishwasher.

[0048] It should be noted that this utility model does not limit the transmission ratio of the transmission mechanism 23. For example, those skilled in the art can set the transmission ratio of the transmission mechanism 23 to 1:3 or 3:1, etc., as long as the projected area of ​​the spraying area of ​​the spraying arm 22 is close to a rectangle. Such adjustments and changes to the specific transmission ratio of the transmission mechanism 23 do not deviate from the principle and scope of this utility model and should be limited to the protection scope of this utility model.

[0049] Furthermore, it should be noted that this utility model does not limit the type of transmission mechanism 23. For example, those skilled in the art can set the transmission mechanism 23 as a gear set, pulley set, or sprocket set, etc. Such adjustments and changes to the specific type of transmission mechanism 23 do not deviate from the principle and scope of this utility model and should be limited to the protection scope of this utility model.

[0050] Preferably, such as Figures 2 to 5 As shown, the transmission mechanism 23 of this utility model includes a first transmission gear 231, a second transmission gear 232, a third transmission gear 233, a first rotating shaft 234, and a second rotating shaft 235. An external gear 11 meshes with the first transmission gear 231 on a fixed component. The axis of the external gear 11 coincides with the rotation axis of the drive arm 21, allowing the drive arm 21 to rotate around the external gear 11 with the first transmission gear 231 in place. Both the first rotating shaft 234 and the second rotating shaft 235 are rotatably mounted on the drive arm 21. 4. Both the second rotating shaft 235 and the drive arm 21 are arranged parallel to the rotation axis. The first transmission gear 231 is fixedly installed on the first rotating shaft 234. The second transmission gear 232 and the third transmission gear 233 are both fixedly installed on the second rotating shaft 235 and are distributed at intervals along the length of the second rotating shaft 235. The spray arm 22 is provided with an internal gear 221 that meshes with the third transmission gear 233. The axis of the internal gear 221 coincides with the rotation axis of the spray arm 22. The second transmission gear 232 is meshed with the first transmission gear 231.

[0051] For example, such as Figures 2 to 5 As shown, the water tank 1 of this utility model is provided with an external gear 11 that meshes with the first transmission gear 231, and a second transmission gear 232 that meshes with the first transmission gear 231. The spray arm 22 is provided with an internal gear 221 that meshes with the third transmission gear 233. When the drive arm 21 rotates, the drive arm 21 drives the first transmission gear 231 to rotate around the external gear 11, thereby driving the second transmission gear 232 and the third transmission gear 233 to rotate. The third transmission gear 233 can then drive the internal gear 221 to rotate, so that the spray arm 22 can rotate relative to the drive arm 21 while rotating with the drive arm 21. This makes the projected area of ​​the spray area of ​​the spray arm 22 nearly rectangular, close to the washing chamber, achieving a uniform and efficient spraying effect, expanding the spray range of the spray device, eliminating washing dead corners of the dishwasher, and improving the washing effect of the dishwasher.

[0052] Preferably, such as Figures 2 to 5As shown, the drive arm 21 of this utility model is provided with a connecting column 211, the fixing component is provided with a mounting boss 12, the mounting boss 12 is provided with a mounting hole 13, the connecting column 211 is inserted into the mounting hole 13 and can rotate in the mounting hole 13, one end of the connecting column 211 is connected to the drive assembly 3, and the external gear 11 is provided on the mounting boss 12.

[0053] For example, such as Figures 2 to 5 As shown, the water tank 1 of this utility model is provided with a drain plate 14, which has a plurality of spaced drain holes. The drain plate 14 can filter the washing water dripping from the washing chamber to prevent food residue and other debris from entering the water tank 1. The drain plate 14 is provided with a vertically arranged mounting boss 12, which is cylindrical in shape. The mounting boss 12 is provided with a vertically arranged mounting hole 13 that communicates with the water tank 1. The bottom end of the drive arm 21 is provided with a vertically arranged connecting post 211. The connecting post 211 is inserted into the mounting hole 13 and can rotate in the mounting hole 13. The mounting boss 12 is used to fix the drive arm 21, so that the drive arm 21 can rotate but cannot move up and down. The bottom end of the connecting post 211 is connected to the drive assembly 3. The external gear 11 is located at the top of the outer circumferential wall of the mounting boss 12.

[0054] It should be noted that the connecting column 211 of this utility model is preferably designed as a hollow structure, which can reduce the weight of the drive arm 21 and improve the working efficiency of the drive arm 21.

[0055] Preferably, such as Figure 4 and Figure 5 As shown, the connecting column 211 and the fixing member of this utility model are respectively provided with a first limiting structure and a second limiting structure to restrict the movement of the connecting column 211 relative to the fixing member along the rotation axis of the connecting column 211.

[0056] In other words, by setting a first limiting structure and a second limiting structure that cooperate with each other on the connecting column 211 and the fixed component, the up and down movement of the connecting column 211 can be restricted, thereby making the drive arm 21 more stable when rotating and preventing eccentric vibration.

[0057] It should be noted that this utility model does not limit the structural form of the first limiting structure and the second limiting structure. Those skilled in the art can set the first limiting structure and the second limiting structure as a matching card plate and a card slot 2113, with the card plate snapped into the card slot 2113, or set the first limiting structure and the second limiting structure as a matching card post 341 and a card ring, with the card post 341 pressing against the card ring, etc. As long as the drive arm 21 can rotate but not move up and down, such adjustments and changes to the specific structural form of the first limiting structure and the second limiting structure do not deviate from the principle and scope of this utility model and should be limited to the protection scope of this utility model.

[0058] Preferably, such as Figures 4 to 6 As shown, the first limiting structure of this utility model is a first limiting protrusion 2111 provided on the connecting column 211. The mounting boss 12 is provided with a groove 121 communicating with the mounting hole 13 at one end near the spray arm 22. The second limiting structure is a limiting plate 122 provided in the groove 121 and extending along the length direction of the mounting hole 13. One end of the limiting plate 122 is fixedly connected to the groove 121 or integrally provided. The other end of the limiting plate 122 is a free end. The other end of the limiting plate 122 is provided with a second limiting protrusion 1221 extending toward the mounting hole 13. When the connecting column 211 is inserted into the mounting hole 13, the first limiting protrusion 2111 enters the mounting hole 13 by squeezing the second limiting protrusion 1221. The second limiting protrusion 1221 can press against the first limiting protrusion 2111 to restrict the movement of the connecting column 211 relative to the mounting boss 12 along the rotation axis direction of the connecting column 211.

[0059] For example, such as Figures 4 to 6 As shown, the top of the outer wall of the connecting column 211 of this utility model is provided with a first limiting protrusion 2111, the top of the mounting boss 12 is provided with a groove 121, the limiting plate 122 is arranged vertically in the groove 121, the bottom end of the limiting plate 122 is integrally set with the bottom end of the groove 121, the top end of the limiting plate 122 is a free end, and the side of the limiting plate 122 facing the mounting hole 13 is provided with a second limiting protrusion 1221. When the connecting column 211 is about to be fully inserted into the mounting hole 13, the first limiting protrusion 2111 can squeeze the second limiting protrusion 1221, thereby entering the mounting hole 13. After the first limiting protrusion 2111 enters the mounting hole 13, the second limiting protrusion 1221 can press against the first limiting protrusion 2111, thereby restricting the vertical movement of the connecting column 211.

[0060] It should be noted that the present invention does not limit the number of the first limiting protrusions 2111. For example, those skilled in the art can set multiple first limiting protrusions 2111 that are spaced apart circumferentially along the outer wall of the connecting post 211, or set the first limiting protrusions 2111 to be annular and arranged in a circle along the circumference of the connecting post 211, etc. Such adjustments and changes to the specific number of the first limiting protrusions 2111 do not deviate from the principle and scope of the present invention and should be limited to the protection scope of the present invention.

[0061] It should also be noted that the present invention does not limit the number of grooves 121 and limiting plates 122. For example, those skilled in the art can set the grooves 121 and limiting plates 122 to be 3 or 5 distributed circumferentially along the mounting hole 13. Such adjustments and changes to the specific number of grooves 121 and limiting plates 122 do not deviate from the principle and scope of the present invention and should be limited to the protection scope of the present invention.

[0062] Preferably, such as Figures 4 to 6 As shown, the first limiting protrusion 2111 of this utility model is annular and is arranged in a circle along the circumference of the connecting post 211. The groove 121 and the limiting plate 122 are arranged opposite to each other, and the multiple grooves 121 and the limiting plate 122 are distributed at intervals along the circumference of the mounting hole 13.

[0063] For example, such as Figures 4 to 6 As shown, the first limiting protrusion 2111 of this utility model is configured as an annular shape and is arranged in a circle along the circumference of the outer wall of the connecting column 211. There are four grooves 121 and limiting plates 122 arranged opposite to each other, and the four grooves 121 and limiting plates 122 are distributed at intervals along the circumference of the mounting hole 13.

[0064] Preferably, such as Figure 4 and Figure 5 As shown, the diameter of the connecting column 211 of this utility model gradually increases along the direction close to the spray arm 22.

[0065] For example, such as Figure 4 and Figure 5 As shown, the diameter of the connecting post 211 of this utility model gradually increases from bottom to top. This design makes it easier for the connecting post 211 to be inserted into the mounting hole 13, and also improves the rotation efficiency of the drive arm 21.

[0066] Preferably, such as Figure 4 and Figure 5As shown, the outer wall of the connecting post 211 of this utility model is provided with a slip ring 2112 extending circumferentially along the outer wall of the connecting post 211. The mounting hole 13 is provided with a slide table 123 opposite to the slip ring 2112. After the connecting post 211 is inserted into the mounting hole 13, the slip ring 2112 presses against the slide table 123 and can slide along the slide table 123.

[0067] For example, such as Figure 4 and Figure 5 As shown, the outer wall of the connecting column 211 of this utility model is provided with a raised closed slip ring 2112. The slip ring 2112 is located below the first limiting protrusion 2111. The mounting hole 13 is provided with a slide table 123 opposite to the slip ring 2112. After the connecting column 211 is inserted into the mounting hole 13, the slip ring 2112 presses against the slide table 123 and can slide along the slide table 123. This arrangement makes the connecting column 211 rotate more smoothly in the mounting hole 13, reduces frictional resistance, and improves the rotation efficiency of the drive arm 21.

[0068] It should be noted that this utility model does not limit the number of slip rings 2112. For example, those skilled in the art can set 2 or 4 slip rings 2112, etc. Such adjustments and changes to the specific number of slip rings 2112 do not deviate from the principle and scope of this utility model and should be limited to the protection scope of this utility model.

[0069] Preferably, such as Figure 4 As shown, the present invention has multiple slip rings 2112, which are distributed at intervals along the length direction of the connecting column 211.

[0070] For example, such as Figure 4 As shown, the present invention has three slip rings 2112, which are distributed at intervals along the length of the connecting post 211.

[0071] It should be noted that this utility model does not limit the type of the drive component 3. For example, those skilled in the art can also set the drive component 3 to a structure of motor + gear set, or set the drive component 3 to a structure in which the motor directly drives the drive arm 21 to rotate, etc. Such adjustments and changes to the specific type of the drive component 3 do not deviate from the principle and scope of this utility model and should be limited to the protection scope of this utility model.

[0072] In the first preferred case, such as Figure 2 , Figure 4 and Figure 5As shown, the drive assembly 3 of this utility model includes a drive component 31, a worm gear 32, a connecting gear 33, and a drive gear 34. The drive component 31 is mounted on a fixed component. The worm gear 32 is fixedly connected to the drive shaft of the drive component 31. The connecting gear 33 and the drive gear 34 are meshed and rotatably mounted on the fixed component. The worm gear 32 meshes with the connecting gear 33, and the drive gear 34 is drivenly connected to the drive arm 21.

[0073] For example, such as Figure 2 , Figure 4 and Figure 5 As shown, the driving component 31 of this utility model is installed horizontally on the water tank 1. The driving shaft of the driving component 31 is also horizontally arranged. The worm gear 32 is fixedly installed on the driving shaft. The connecting gear 33 and the driving gear 34 are meshed and rotatably installed on the water tank 1. The worm gear 32 meshes with the connecting gear 33. The top of the driving gear 34 is provided with a locking pin 341. The bottom of the outer wall of the connecting pin 211 is provided with a locking groove 2113. When the connecting pin 211 is fully inserted into the mounting hole 13, the bottom end of the connecting pin 211 abuts against the top of the driving gear 34, and the locking pin 341 can be inserted into the locking groove 2113, so that the driving gear 34 can drive the connecting pin 211 to rotate.

[0074] In the second preferred embodiment, the drive assembly 3 of this utility model includes a drive member 31, a first gear (not shown in the figure), a second gear (not shown in the figure), and a drive gear 34. The drive member 31 is mounted on a fixed member. The first gear is fixedly connected to the drive shaft of the drive member 31. The second gear and the drive gear 34 are meshed and rotatably mounted on the fixed member. The first gear meshes with the second gear, and the drive gear 34 is drivenly connected to the drive arm 21.

[0075] For example, the driving component 31 of this utility model is installed vertically below the water tank 1, and the driving shaft of the driving component 31 extends vertically to the top of the water tank 1. The first gear is fixedly installed on the driving shaft, and the second gear and the driving gear 34 are meshed and rotatably installed on the water tank 1. The first gear and the second gear mesh, and the top of the driving gear 34 is provided with a locking pin 341. The bottom of the outer wall of the connecting pin 211 is provided with a locking groove 2113. When the connecting pin 211 is fully inserted into the mounting hole 13, the bottom end of the connecting pin 211 abuts against the top of the driving gear 34, and the locking pin 341 can be inserted into the locking groove 2113, so that the driving gear 34 can drive the connecting pin 211 to rotate.

[0076] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0077] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A spray device, characterized in that Includes a fixing component and a spray arm assembly and a drive assembly (3) mounted on the fixing component. The spray arm assembly includes a drive arm (21), a spray arm (22), and a transmission mechanism (23). The drive arm (21) is rotatably mounted on the fixed member, and the spray arm (22) is rotatably mounted on the drive arm (21). The transmission mechanism (23) drives the drive arm (21) and the spray arm (22) to rotate relative to the drive arm (21) as the drive arm (21) rotates. The rotation axis of the drive arm (21) is parallel to but does not coincide with the rotation axis of the spray arm (22). The drive assembly (3) is capable of driving the drive arm (21) to rotate relative to the fixed member.

2. The spray device of claim 1, wherein The transmission mechanism (23) includes a first transmission gear (231), a second transmission gear (232), a third transmission gear (233), a first rotating shaft (234), and a second rotating shaft (235). The fixed component is provided with an external gear (11) that meshes with the first transmission gear (231). The axis of the external gear (11) coincides with the rotation axis of the drive arm (21). The drive arm (21) can rotate around the external gear (11) with the first transmission gear (231). Both the first rotating shaft (234) and the second rotating shaft (235) are rotatably mounted on the drive arm (21). Both shafts are parallel to the rotation axis of the drive arm (21). The first transmission gear (231) is fixedly mounted on the first rotating shaft (234), and the second transmission gear (232) and the third transmission gear (233) are both fixedly mounted on the second rotating shaft (235) and spaced apart along the length of the second rotating shaft (235). The spray arm (22) is provided with an internal gear (221) that meshes with the third transmission gear (233). The axis of the internal gear (221) coincides with the rotation axis of the spray arm (22). The second transmission gear (232) meshes with the first transmission gear (231).

3. The spray device of claim 2, wherein The drive arm (21) is provided with a connecting column (211), the fixing component is provided with a mounting boss (12), the mounting boss (12) is provided with a mounting hole (13), the connecting column (211) is inserted into the mounting hole (13) and can rotate in the mounting hole (13), one end of the connecting column (211) is connected to the drive assembly (3), and the external gear (11) is provided on the mounting boss (12).

4. The spray device of claim 3, wherein The connecting column (211) and the fixing member are respectively provided with a first limiting structure and a second limiting structure to restrict the movement of the connecting column (211) relative to the fixing member along the rotation axis of the connecting column (211).

5. The shower assembly of claim 4, wherein, The first limiting structure is a first limiting protrusion (2111) provided on the connecting column (211). The mounting boss (12) has a groove (121) communicating with the mounting hole (13) at one end near the spray arm (22). The second limiting structure is a limiting plate (122) provided in the groove (121) and extending along the length direction of the mounting hole (13). One end of the limiting plate (122) is fixedly connected to or integrally provided with the groove (121), and the other end of the limiting plate (122) is a free end. (122) has a second limiting protrusion (1221) extending toward the mounting hole (13) at the other end. When the connecting post (211) is inserted into the mounting hole (13), the first limiting protrusion (2111) enters the mounting hole (13) by squeezing the second limiting protrusion (1221). The second limiting protrusion (1221) can press against the first limiting protrusion (2111) to restrict the connecting post (211) from moving relative to the mounting boss (12) along the rotation axis of the connecting post (211).

6. The spraying device according to claim 5, characterized in that, The first limiting protrusion (2111) is annular and is arranged in a circle around the circumference of the connecting post (211). The groove (121) and the limiting plate (122) are multiple and arranged opposite to each other. The multiple grooves (121) and the limiting plate (122) are distributed at intervals along the circumference of the mounting hole (13).

7. The spray device of claim 3, wherein The diameter of the connecting column (211) gradually increases in the direction approaching the spray arm (22); and / or The outer wall of the connecting post (211) is provided with a slip ring (2112) extending circumferentially along the outer wall of the connecting post (211). The mounting hole (13) is provided with a slide table (123) opposite to the slip ring (2112). After the connecting post (211) is inserted into the mounting hole (13), the slip ring (2112) presses against the slide table (123) and can slide along the slide table (123).

8. The spray device of claim 7, wherein The slip rings (2112) are multiple, and the multiple slip rings (2112) are distributed at intervals along the length direction of the connecting post (211).

9. The shower assembly of any one of claims 1 to 8, wherein, The drive assembly (3) includes a drive member (31), a worm (32), a connecting gear (33), and a drive gear (34). The drive member (31) is mounted on the fixed member. The worm (32) is fixedly connected to the drive shaft of the drive member (31). The connecting gear (33) and the drive gear (34) are meshed and rotatably mounted on the fixed member. The worm (32) meshes with the connecting gear (33), and the drive gear (34) is drivenly connected to the drive arm (21). The drive assembly (3) includes a drive member (31), a first gear, a second gear, and a drive gear (34). The drive member (31) is mounted on the fixed member. The first gear is fixedly connected to the drive shaft of the drive member (31). The second gear and the drive gear (34) are meshed and rotatably mounted on the fixed member. The first gear meshes with the second gear. The drive gear (34) is driven connected to the drive arm (21).

10. A dishwasher, characterized in that The spraying device includes any one of claims 1 to 9.

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