Dishwasher

Abstract

The invention belongs to the technical field of kitchen appliances and discloses a dish-washing machine. The dish washing machine comprises a spraying arm and a driving mechanism, the driving mechanism comprises a driving part, a shunt valve and a transmission clutch assembly, the output end of the driving part is in transmission connection with the input end of the transmission clutch assembly, the transmission clutch assembly is provided with a first output end and a second output end, the first output end is in transmission connection with the shunt valve, and the second output end is in transmission connection with the spraying arm; when the output end of the driving part rotates in the first direction, the water dividing valve is driven to act through the transmission clutch assembly, and the spraying arm is kept in a static state. And when the output end of the driving part rotates in the second direction, the spraying arm is driven to rotate through the transmission clutch assembly, and the shunt valve is kept in a static state. By arranging the transmission clutch assembly, the shunt valve and the spraying arm share the same driving part, the number of the driving parts can be reduced, the size of the driving mechanism is reduced, the complexity of the driving mechanism and the energy consumption of the whole machine are reduced, the manufacturing cost is reduced, and the operation efficiency of the dish washing machine is improved.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and more particularly to dishwashers. Background Technology

[0002] Dishwashers typically include a water distribution valve and a spray arm. The water distribution valve is used to switch or distribute the washing water path to selectively supply water to the upper rack, lower rack, or different spray areas, thereby meeting the needs of different washing conditions. At the same time, the spray arm needs to rotate continuously during the washing process to form a spray water flow with a large coverage area, thereby improving the washing effect.

[0003] However, in existing technologies, the water distribution valve and the spray arm are often driven by separate motors. Specifically, the water distribution valve uses one motor to switch water paths, while the spray arm uses another motor to rotate. This design increases the number of motors inside the dishwasher, leading to a more complex structure and larger footprint. Furthermore, the multiple motors not only increase manufacturing costs but also raise overall energy consumption.

[0004] Therefore, there is an urgent need for a dishwasher to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a dishwasher that reduces the overall volume of the drive mechanism, improves space utilization, reduces the energy consumption of the drive mechanism, and saves production costs.

[0006] To achieve this objective, the present invention adopts the following technical solution: A dishwasher includes a spray arm and a drive mechanism. The drive mechanism includes a drive component, a water distribution valve, and a transmission clutch assembly. The output end of the drive component is drivenly connected to the input end of the transmission clutch assembly. The transmission clutch assembly has a first output end and a second output end. The first output end is drivenly connected to the water distribution valve, and the second output end is drivenly connected to the spray arm. When the output end of the drive unit rotates in the first direction, the water distribution valve is activated by the transmission clutch assembly, and the spray arm remains stationary; when the output end of the drive unit rotates in the second direction, the spray arm is activated by the transmission clutch assembly, and the water distribution valve remains stationary, the first direction being opposite to the second direction.

[0007] Optionally, the transmission clutch assembly includes a first one-way transmission assembly and a second one-way transmission assembly with opposite transmission directions. The output ends of the first one-way transmission assembly and the second one-way transmission assembly are respectively the first output end and the second output end. A water divider for switching water paths is rotatably disposed inside the water divider valve. The water divider is drivenly connected to the first output end. The spray arm is drivenly connected to the second output end. The input ends of the first one-way transmission assembly and the second one-way transmission assembly are drivenly connected. One of the input ends of the first one-way transmission assembly and the second one-way transmission assembly is drivenly connected to the output end of the drive component. When the output end of the drive unit rotates along the first direction, the water divider is driven to move by the first one-way transmission component, and the spray arm is kept stationary by the second one-way transmission component; when the output end of the drive unit rotates along the second direction, the water divider is kept stationary by the first one-way transmission component, and the spray arm is rotated by the second one-way transmission component.

[0008] Optionally, the first one-way transmission assembly includes a first transmission shaft, a first ratchet structure, and a first transmission wheel. One end of the first transmission shaft is connected to the water separator, and the other end of the first transmission shaft is connected to the first transmission wheel through the first ratchet structure. The second one-way transmission assembly includes a second transmission shaft, a second ratchet structure, and a second transmission wheel. One end of the second transmission shaft is connected to the spray arm, and the other end of the second transmission shaft is connected to the second transmission wheel through the second ratchet structure. The first transmission wheel and the second transmission wheel are connected in a transmission connection, and one of the first transmission wheel and the second transmission wheel is connected in a transmission connection to the output end of the drive component. The transmission directions of the first ratchet structure and the second ratchet structure are opposite.

[0009] Optionally, the first ratchet structure includes a first pawl and a first ratchet, a first disk is provided at the lower end of the first drive shaft, the first pawl is provided along the circumference of the first disk, and the first ratchet is coaxially fixed with the first drive wheel; The second ratchet structure includes a second pawl and a second ratchet. A second disk is provided at the lower end of the second drive shaft. The second pawl is provided along the circumference of the second disk. The second ratchet is coaxially fixed with the second drive wheel. When the first drive wheel rotates in the first direction, the first ratchet engages with the first pawl, and the second ratchet is in a slipping state; when the first drive wheel rotates in the second direction, the first ratchet and the first pawl are in a slipping state, and the second ratchet engages with the second pawl.

[0010] Optionally, the first transmission wheel is a first transmission gear, the second transmission wheel is a second transmission gear, and the first transmission gear and the second transmission gear mesh; Alternatively, the driving mechanism includes a first transmission belt, the first transmission wheel is a first transmission pulley, the second transmission wheel is a second transmission pulley, and the first transmission belt is wound around the outer periphery of the first transmission pulley and the second transmission pulley and is tensioned.

[0011] Optionally, the water distribution valve further includes: The valve body has the water distribution plate rotatably disposed within it, and the valve body has at least one water outlet, with at least one water outlet connected to the spray arm. The first rotating shaft has one end fixedly connected to the water separator, and the other end fixedly coaxially with the first output end; A shaft seal is provided at the connection between the first rotating shaft and the valve body.

[0012] Optionally, the drive mechanism further includes: The cam is fixed coaxially with the first rotating shaft; A position detection element is disposed on the periphery of the cam, and the position detection element is triggered when the cam rotates with the first rotating shaft.

[0013] Optionally, the drive mechanism further includes a third transmission component, wherein a second rotating shaft is fixed to the bottom of the spray arm, and the second rotating shaft is connected to the second output end via the third transmission component.

[0014] Optionally, the third transmission assembly includes: A rotating bushing is provided at the bottom of the spray arm, a second rotating shaft is provided, the rotating bushing is sleeved on the second rotating shaft and is coaxially fixed with the second rotating shaft, and a third transmission gear is provided at the bottom end of the rotating bushing; The fourth transmission gear is coaxially arranged with the second output end, and the third transmission gear meshes with the fourth transmission gear.

[0015] Optionally, the bottom end of the second rotating shaft is provided with a fifth transmission gear, and a plurality of transmission teeth are provided inside the rotating bushing along the circumference of the rotating bushing, the transmission teeth meshing with the fifth transmission gear.

[0016] Optionally, the dishwasher also includes a water cup, the drive mechanism being detachably connected to the water cup and located below the water cup.

[0017] Beneficial effects: The dishwasher provided by this invention, when the output end of the drive unit rotates in a first direction, activates the water distribution valve through a transmission clutch assembly, while keeping the spray arm stationary; when the output end of the drive unit rotates in a second direction, the spray arm rotates through the transmission clutch assembly, while keeping the water distribution valve stationary. By setting the transmission clutch assembly, the water distribution valve and the spray arm can share the same drive unit, which can reduce the number of drive units, simplify the structure of the drive mechanism, reduce the size of the drive mechanism, reduce the complexity of the drive mechanism and the energy consumption of the whole machine, reduce manufacturing costs, and improve the operating efficiency and reliability of the dishwasher. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the dishwasher provided in Embodiment 1 of the present invention from one perspective; Figure 2 This is a first exploded view of the dishwasher provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the dishwasher provided in Embodiment 1 of the present invention from another perspective; Figure 4 This is the present invention. Figure 3 Sectional view at point AA; Figure 5 This is a second exploded view of the dishwasher provided in Embodiment 1 of the present invention; Figure 6 This is an exploded view of the driving mechanism provided in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the structure of the drive mechanism provided in Embodiment 1 of the present invention after hiding the first and second housings.

[0019] In the picture: 100. Spray arm; 110. Second rotating shaft; 111. Fifth transmission gear; 200. Water cup; 300. Drive mechanism; 320. First one-way transmission assembly; 321. First transmission shaft; 322. First ratchet structure; 3221. First disc; 3222. First pawl; 3223. First ratchet; 323. First transmission wheel; 330. Second one-way transmission assembly; 331. Second transmission shaft; 332. Second ratchet structure; 3321. Second disc; 3322. Second pawl; 3323. Second ratchet; 333. Second transmission wheel; 340. Third transmission assembly; 341. Rotating bushing; 342. Third transmission gear; 343. Fourth transmission gear; 301. First housing; 302. Second housing; 350. Drive component; 360. Divider valve; 361. Valve body; 362. Divider plate; 363. First rotating shaft; 364. Shaft seal; 370. Cam; 380. Position detection component. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0021] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0024] Example 1 This embodiment provides a dishwasher, such as Figure 1 , Figure 2 and Figure 3As shown, the dishwasher includes a spray arm 100 and a drive mechanism 300. The drive mechanism 300 includes a drive component 350, a water distribution valve 360, and a transmission clutch assembly. The output end of the drive component 350 is connected to the input end of the transmission clutch assembly. The transmission clutch assembly has a first output end and a second output end. The first output end is connected to the water distribution valve 360, and the second output end is connected to the spray arm 100. When the output end of the drive component 350 rotates in a first direction, the transmission clutch assembly drives the water distribution valve 360 ​​to move, and the spray arm 100 remains stationary. When the output end of the drive component 350 rotates in a second direction, the transmission clutch assembly drives the spray arm 100 to rotate, and the water distribution valve 360 ​​remains stationary. The first direction and the second direction are opposite. By setting up a transmission clutch assembly, the water distribution valve 360 ​​and the spray arm 100 can share the same drive component 350, which can reduce the number of drive components 350, simplify the structure of the drive mechanism 300, reduce the size of the drive mechanism 300, reduce the complexity of the drive mechanism 300 and the energy consumption of the whole machine, reduce manufacturing costs, and improve the operating efficiency and reliability of the dishwasher.

[0025] Optionally, the transmission clutch assembly includes a first one-way transmission assembly 320 and a second one-way transmission assembly 330 with opposite transmission directions. The output ends of the first one-way transmission assembly 320 and the second one-way transmission assembly 330 are respectively the first output end and the second output end. A water distribution plate 362 for switching water paths is rotatably disposed inside the water distribution valve 360. The water distribution plate 362 is drivenly connected to the first output end, and the spray arm 100 is drivenly connected to the second output end. The input ends of the first one-way transmission assembly 320 and the second one-way transmission assembly 330 are drivenly connected. One of the input ends of the first one-way transmission assembly 320 and the second one-way transmission assembly 330 is connected to the output end of the drive member 350. When the output end of the drive member 350 rotates in the first direction, the first one-way transmission assembly 320 drives the water distributor 362 to move, and the second one-way transmission assembly 330 keeps the spray arm 100 stationary. When the output end of the drive member 350 rotates in the second direction, the first one-way transmission assembly 320 keeps the water distributor 362 stationary, and the second one-way transmission assembly 330 rotates the spray arm 100. This transmission clutch assembly has a simple structure, reliable transmission, and high transmission efficiency. It can selectively drive the water distributor 360 and the spray arm 100 by utilizing the rotation of the output end of the drive member 350 in either the first or second direction, thereby improving the compactness of the dishwasher structure, increasing space utilization, reducing manufacturing costs, and improving the dishwasher's operating efficiency and reliability.

[0026] Optionally, such as Figure 4 and Figure 5As shown, the first one-way transmission assembly 320 includes a first transmission shaft 321, a first ratchet structure 322, and a first transmission wheel 323. One end of the first transmission shaft 321 is connected to the water divider 362, and the other end of the first transmission shaft 321 is connected to the first transmission wheel 323 via the first ratchet structure 322. The second one-way transmission assembly 330 includes a second transmission shaft 331, a second ratchet structure 332, and a second transmission wheel 333. One end of the second transmission shaft 331 is connected to the spray arm 100, and the other end of the second transmission shaft 331 is connected to the second transmission wheel 333 via the second ratchet structure 332. The first transmission wheel 323 and the second transmission wheel 333 are connected, and one of the first transmission wheel 323 and the second transmission wheel 333 is connected to the output end of the drive member 350. The transmission directions of the first ratchet structure 322 and the second ratchet structure 332 are opposite. By setting the first ratchet structure 322 and the second ratchet structure 332, a single drive element 350 can selectively drive the water distribution plate 362 and the spray arm 100. This results in a simple structure, reliable transmission, and further improves the compactness and stability of the drive mechanism 300. Therefore, it can be understood that the first output end of the transmission clutch assembly is the first drive shaft 321, and the second output end of the transmission clutch assembly is the second drive shaft 331.

[0027] Optionally, such as Figure 4 and Figure 5 As shown, the first ratchet structure 322 includes a first pawl 3222 and a first ratchet 3223. A first disk 3221 is provided at the lower end of the first drive shaft 321, and a first pawl 3222 is provided along the circumference of the first disk 3221. The first ratchet 3223 is coaxially fixed with the first drive wheel 323. The second ratchet structure 332 includes a second pawl 3322 and a second ratchet 3323. A second disk 3321 is provided at the lower end of the second drive shaft 331, and a first pawl 3222 is provided along the circumference of the second disk 3321. The second ratchet 3322 and the second ratchet wheel 3323 are coaxially fixed with the second transmission wheel 333. When the driving member 350 drives the first transmission wheel 323 to rotate in the second direction, the first ratchet wheel 3223 engages with the first ratchet 3222, while the second ratchet wheel 3323 slips. When the driving member 350 drives the second transmission wheel 333 to rotate in the first direction, the second ratchet wheel 3323 engages with the second ratchet 3322, while the first ratchet wheel 3223 slips. This configuration allows the first transmission shaft 321 and the second transmission shaft 331 to rotate alternately without interference under the drive of a single driving member 350, thereby enabling the water separator 362 and the spray arm 100 to work alternately. The structure is simple, the transmission is reliable, and it helps to improve the compactness and operational stability of the entire machine.

[0028] like Figure 4 and Figure 5As shown, the first transmission wheel 323 is the first transmission gear, and the second transmission wheel 333 is the second transmission gear. The first and second transmission gears mesh. In this embodiment, the output shaft of the drive component 350 is coaxially fixed with the second transmission gear, which makes the structure of the drive mechanism 300 more compact and improves space utilization. With the above arrangement, the power output by the drive component 350 can be directly transmitted to the second transmission gear and then transmitted to the first transmission gear through gear meshing, realizing the distribution of the power output by the drive component 350 to the input end of the first one-way transmission component 320 and the input end of the second one-way transmission component 330; at the same time, the gear transmission structure is simple, the transmission efficiency is high, and the transmission ratio is stable, which is conducive to improving the transmission reliability and the overall machine operation stability.

[0029] For example, in Figure 4 From the perspective shown, the second transmission wheel 333 rotates counterclockwise as the first direction and clockwise as the second direction, which explains the operating principle of the drive mechanism 300.

[0030] like Figure 4 As shown, the first disk 3221 is provided with a plurality of first pawls 3222 circumferentially. Each first pawl 3222 gradually moves away from the first disk 3221 in a clockwise direction and elastically abuts against the first ratchet teeth on the inner circumference of the first ratchet wheel 3223. This ensures that when the driving member 350 drives the first transmission wheel 323 to rotate counterclockwise, the first ratchet wheel 3223 can smoothly drive the first transmission shaft 321 to rotate via the first pawls 3222; when the driving member 350 drives the first transmission wheel 323 to rotate clockwise, the first ratchet wheel 3223 and the first pawls 3222 are in a slipping state. In this embodiment, three first pawls 3222 are provided circumferentially on the first disk 3221. In other embodiments, four, five, or six first pawls 3222 can be provided to adjust the meshing strength and transmission smoothness according to the transmission load or size requirements, thereby improving structural reliability and applicability. The number of first pawls 3222 is not specifically limited.

[0031] Optionally, the first ratchet 3223 and the first transmission gear are integrally formed. That is, the first ratchet 3223 is formed by opening the first ratchet tooth on the inner circumference of the first transmission gear 323, and the first transmission gear is formed by setting the first tooth on the outer circumference of the first transmission gear 323. The machining process of integrally forming the first ratchet 3223 and the first transmission gear is simple, the manufacturing cost is lower, and it is easy to assemble, thus improving assembly efficiency.

[0032] Optionally, such as Figure 4 and Figure 5As shown, the second disk 3321 is provided with multiple second pawls 3322 circumferentially. Each second pawl 3322 gradually moves away from the first disk 3221 in a clockwise direction and elastically abuts against the second ratchet teeth on the inner circumference of the second ratchet 3323. This ensures that when the driving member 350 drives the second transmission wheel 333 to rotate counterclockwise, the second ratchet 3323 can smoothly drive the second transmission shaft 331 to rotate through the second pawls 3322; when the driving member 350 drives the second transmission wheel 333 to rotate clockwise, the second ratchet 3323 and the second pawls 3322 are in a slipping state. In this embodiment, three second pawls 3322 are provided circumferentially on the second disk 3321. In other embodiments, four, five, or six second pawls 3322 can be provided to adjust the meshing strength and transmission smoothness according to the transmission load or size requirements, thereby improving the structural reliability and applicability. The number of second pawls 3322 is not specifically limited.

[0033] Optionally, the second ratchet 3323 and the second transmission gear are integrally formed. That is, the second ratchet 3323 is formed by opening a second ratchet tooth on the inner circumference of the second transmission wheel 333, and the second transmission gear is formed by providing a second tooth on the outer circumference of the second transmission wheel 333. The machining process of integrally forming the second ratchet 3323 and the second transmission gear is simple, the manufacturing cost is lower, and it is easy to assemble, thus improving assembly efficiency.

[0034] Optionally, the water distribution valve 360 ​​further includes a valve body 361, a first rotating shaft 363, and a shaft seal 364. A water distribution plate 362 is rotatably disposed within the valve body 361. The valve body 361 has at least one water outlet, which is connected to the spray arm 100. One end of the first rotating shaft 363 is fixed to the water distribution plate 362, and the other end is coaxially fixed to the first transmission shaft 321. A shaft seal 364 is provided at the connection between the first rotating shaft 363 and the valve body 361. The above design has a simple structure and a clear transmission path, effectively transmitting the power of the first transmission shaft 321 to the water distribution plate 362 while preventing water leakage and ensuring the airtightness of the water passage within the valve body 361 and the long-term reliable operation of the water distribution valve 360.

[0035] Optionally, the drive mechanism 300 further includes a first housing 301, in which the first one-way transmission assembly 320 and the second one-way transmission assembly 330 are both disposed. The first housing 301 not only provides support and fixation for the transmission components, ensuring the relative position stability of each component, but also prevents dust, moisture or other impurities from entering the first housing 301, thereby improving the reliability and durability of the drive mechanism 300. Furthermore, placing the first one-way transmission assembly 320 and the second one-way transmission assembly 330 in the first housing 301 facilitates modular assembly and improves assembly efficiency.

[0036] Optionally, such as Figure 6As shown, the dishwasher also includes a cam 370 and a position detection element 380. The cam 370 is coaxially fixed with the first rotating shaft 363, and the position detection element 380 is disposed on the periphery of the cam 370. When the cam 370 rotates with the first rotating shaft 363, it can trigger the position detection element 380, which can accurately detect the real-time position of the water divider 362, realize the monitoring and feedback of the action status of the water divider valve 360, provide a reliable position signal for the control of the dishwasher, and ensure the accuracy of the action of the water divider valve 360 ​​and the safety of the system operation.

[0037] Optionally, the position detection element 380 is a micro switch, and the position of the water divider 362 is determined by the cam 370 pressing against the contact of the micro switch; in other embodiments, the position detection element 380 can be a photoelectric sensor, and the position of the water divider 362 is determined by the cam 370 blocking the transceiver end of the photoelectric sensor.

[0038] like Figure 4 and Figure 7 As shown, the drive mechanism 300 also includes a third transmission assembly 340. A second rotating shaft 110 is fixed to the bottom of the spray arm 100, and the second rotating shaft 110 is connected to the second transmission shaft 331 via the third transmission assembly 340. By setting the third transmission assembly 340, the installation position of the spray arm 100 can be adjusted according to actual cleaning needs, making the setting position of the spray arm 100 more flexible, thereby optimizing the spray coverage area. At the same time, the third transmission assembly 340 can ensure reliable power transmission and a stable transmission path, ensuring that the spray arm 100 rotates smoothly during operation and improving washing efficiency.

[0039] Optionally, the third transmission assembly 340 includes a rotating bushing 341 and a fourth transmission gear 343. The bottom of the spray arm 100 is provided with a second rotating shaft 110. The rotating bushing 341 is sleeved on the second rotating shaft 110 and is coaxially fixed with the second rotating shaft 110. The bottom end of the rotating bushing 341 is provided with a third transmission gear 342. The fourth transmission gear 343 is provided at the top end of the second transmission shaft 331 and is coaxially fixed with the second transmission shaft 331. The third transmission gear 342 and the fourth transmission gear 343 mesh, thereby realizing the transmission of power from the output end of the second one-way transmission assembly 330 to the spray arm 100. The transmission path is simple, and there is no need to set too many other transition gears. This can effectively reduce the complexity of the third transmission assembly 340 and the loss of kinetic energy transmission, improve the kinetic energy transmission efficiency, and further reduce the volume of the drive mechanism 300, further improving the space utilization inside the dishwasher.

[0040] Optionally, a fifth transmission gear 111 is provided at the bottom end of the second rotating shaft 110, and multiple transmission teeth are provided circumferentially inside the rotating sleeve 341, which mesh with the fifth transmission gear 111. The above design ensures reliable power transmission between the rotating sleeve 341 and the second rotating shaft 110, and the meshing of multiple transmission teeth with the fifth transmission gear 111 can evenly distribute the load, ensuring that the spray arm 100 operates smoothly and reliably during rotation.

[0041] Optionally, the drive mechanism 300 also includes a second housing 302, in which the third transmission gear 342 and the fourth transmission gear 343 are both disposed, protecting the transmission structure of the third transmission gear 342 and the fourth transmission gear 343 from water vapor and impurities, and improving the reliability and durability of the transmission.

[0042] Optionally, the dishwasher also includes a water cup 200, and the drive mechanism 300 is detachably connected to the water cup 200 and located below the water cup 200. This facilitates the installation and removal of the drive mechanism 300, improves the efficiency of installation and removal, and makes the internal structure of the dishwasher more compact, further improving space utilization.

[0043] In this embodiment, the driving component 350 is a drive motor, and the output shaft of the drive motor is coaxially fixed with the second transmission wheel 333. The working principle of the dishwasher is roughly as follows: When the output shaft of the drive motor rotates in the first direction, the power output by the drive motor is transmitted to the first drive wheel 323 through the second drive wheel 333. The first drive wheel 323 transmits the power from the first drive wheel 323 to the first drive shaft 321 through the first ratchet structure 322, thereby driving the water divider 362 to rotate to realize water circuit switching. At this time, since the transmission direction of the second ratchet structure 332 is opposite to that of the first ratchet structure 322, the second ratchet structure 332 is in an idle state, keeping the second drive shaft 331 and the spray arm 100 stationary. When the output shaft of the drive motor rotates in the second direction, the power output by the drive motor is transmitted to the second ratchet structure 332 and the first drive wheel 323 through the second transmission wheel 333. The second ratchet structure 332 transmits the power to the second transmission shaft 331, thereby driving the spray arm 100 to rotate for spraying and washing. At this time, the first ratchet structure 322 is in a slipping state, keeping the first transmission shaft 321 and the water separator 362 stationary.

[0044] Example 2 This embodiment provides a dishwasher, which is basically the same as Embodiment 1, except that the drive mechanism 300 further includes a first transmission belt, a first transmission pulley 323 is a first transmission belt pulley, and a second transmission pulley 333 is a second transmission belt pulley. The first transmission belt is wrapped around the outer circumference of the first and second transmission belt pulleys and is tensioned. Compared with the gear meshing method in Embodiment 1, the belt drive method can provide smooth and continuous power transmission, reduce transmission noise, reduce transmission impact, and improve the reliability and durability of the drive mechanism 300.

[0045] Optionally, the drive mechanism 300 also includes at least one tensioning pulley, which is used to keep the first transmission belt in a taut state, prevent the first transmission belt from slipping, ensure the reliability of the transmission structure, and improve transmission efficiency.

[0046] Optionally, the rotation direction of the first or second transmission pulley can be adjusted by setting multiple tensioning pulleys to adapt to the actual cleaning conditions. There is no specific limit to the number of tensioning pulleys; they can be flexibly selected according to the specific working conditions.

[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A dishwasher, characterized in that, It includes a spray arm (100) and a drive mechanism (300). The drive mechanism (300) includes a drive component (350), a water distribution valve (360), and a transmission clutch assembly. The output end of the drive component (350) is connected to the input end of the transmission clutch assembly. The transmission clutch assembly has a first output end and a second output end. The first output end is connected to the water distribution valve (360), and the second output end is connected to the spray arm (100). When the output end of the drive unit (350) rotates in the first direction, the water distribution valve (360) is activated by the transmission clutch assembly, and the spray arm (100) remains stationary; when the output end of the drive unit (350) rotates in the second direction, the spray arm (100) is activated by the transmission clutch assembly, and the water distribution valve (360) remains stationary, the first direction being opposite to the second direction.

2. The dishwasher according to claim 1, characterized in that, The transmission clutch assembly includes a first one-way transmission assembly (320) and a second one-way transmission assembly (330) with opposite transmission directions. The output ends of the first one-way transmission assembly (320) and the second one-way transmission assembly (330) are respectively the first output end and the second output end. A water divider (362) for switching water paths is rotatably provided inside the water divider valve (360). The water divider (362) is driven to the first output end. The spray arm (100) is driven to the second output end. The input ends of the first one-way transmission assembly (320) and the second one-way transmission assembly (330) are driven to each other. One of the input ends of the first one-way transmission assembly (320) and the second one-way transmission assembly (330) is driven to the output end of the drive unit (350). When the output end of the drive member (350) rotates along the first direction, the water divider (362) is driven to move by the first one-way transmission assembly (320), and the spray arm (100) is kept stationary by the second one-way transmission assembly (330); when the output end of the drive member (350) rotates along the second direction, the water divider (362) is kept stationary by the first one-way transmission assembly (320), and the spray arm (100) is rotated by the second one-way transmission assembly (330).

3. The dishwasher according to claim 2, characterized in that, The first one-way transmission assembly (320) includes a first transmission shaft (321), a first ratchet structure (322) and a first transmission wheel (323). One end of the first transmission shaft (321) is connected to the water separator (362) in a transmission connection, and the other end of the first transmission shaft (321) is connected to the first transmission wheel (323) in a transmission connection through the first ratchet structure (322). The second one-way transmission assembly (330) includes a second transmission shaft (331), a second ratchet structure (332), and a second transmission wheel (333). One end of the second transmission shaft (331) is connected to the spray arm (100) in a transmission connection, and the other end of the second transmission shaft (331) is connected to the second transmission wheel (333) in a transmission connection through the second ratchet structure (332). The first transmission wheel (323) and the second transmission wheel (333) are connected in a transmission manner, and one of the first transmission wheel (323) and the second transmission wheel (333) is connected in a transmission manner to the output end of the drive member (350). The transmission directions of the first ratchet structure (322) and the second ratchet structure (332) are opposite.

4. The dishwasher according to claim 3, characterized in that, The first ratchet structure (322) includes a first pawl (3222) and a first ratchet (3223). A first disk (3221) is provided at the lower end of the first drive shaft (321). The first pawl (3222) is provided along the circumference of the first disk (3221). The first ratchet (3223) is coaxially fixed with the first drive wheel (323). The second ratchet structure (332) includes a second pawl (3322) and a second ratchet (3323). A second disk (3321) is provided at the lower end of the second drive shaft (331). The second pawl (3322) is provided along the circumference of the second disk (3321). The second ratchet (3323) is coaxially fixed with the second drive wheel (333). When the first drive wheel (323) rotates along the first direction, the first ratchet (3223) engages with the first pawl (3222), and the second ratchet (3323) is in a slipping state; when the first drive wheel (323) rotates along the second direction, the first ratchet (3223) engages with the first pawl (3222), and the second ratchet (3323) is in a slipping state.

5. The dishwasher according to claim 3, characterized in that, The first transmission wheel (323) is a first transmission gear, and the second transmission wheel (333) is a second transmission gear. The first transmission gear and the second transmission gear mesh. Alternatively, the drive mechanism (300) includes a first drive belt, the first drive wheel (323) is a first drive pulley, the second drive wheel (333) is a second drive pulley, and the first drive belt is wrapped around the outer periphery of the first drive pulley and the second drive pulley and is tensioned.

6. The dishwasher according to claim 2, characterized in that, The water distribution valve (360) also includes: The valve body (361) has a water distribution plate (362) rotatably disposed inside the valve body (361). The valve body (361) is provided with at least one water outlet, and at least one of the water outlets is connected to the spray arm (100). The first rotating shaft (363) is fixedly connected at one end to the water separator (362) and at the other end to the first output end. A shaft seal (364) is provided at the connection between the first rotating shaft (363) and the valve body (361).

7. The dishwasher according to claim 6, characterized in that, The drive mechanism (300) further includes: Cam (370), said cam (370) is coaxially fixed with the first rotating shaft (363); A position detection element (380) is disposed on the periphery of the cam (370), and the position detection element (380) can be triggered when the cam (370) rotates with the first rotating shaft (363).

8. The dishwasher according to claim 1, characterized in that, The drive mechanism (300) further includes a third transmission assembly (340), and a second rotating shaft (110) is fixed at the bottom of the spray arm (100). The second rotating shaft (110) is connected to the second output end through the third transmission assembly (340).

9. The dishwasher according to claim 8, characterized in that, The third transmission assembly (340) includes: A rotating bushing (341) is provided at the bottom of the spray arm (100) with a second rotating shaft (110). The rotating bushing (341) is sleeved on the second rotating shaft (110) and is coaxially fixed with the second rotating shaft (110). A third transmission gear (342) is provided at the bottom end of the rotating bushing (341). The fourth transmission gear (343) is coaxially arranged with the second output end, and the third transmission gear (342) meshes with the fourth transmission gear (343).

10. The dishwasher according to claim 9, characterized in that, The bottom end of the second rotating shaft (110) is provided with a fifth transmission gear (111), and a plurality of transmission teeth are provided in the rotating bushing (341) along the circumference of the rotating bushing (341), and the transmission teeth mesh with the fifth transmission gear (111).

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