Spraying device and dish washing machine

Abstract

The utility model belongs to the technical field of dish-washing machines and discloses a spraying device and a dish-washing machine. The spraying device comprises a spraying base, a spraying arm assembly, a gear fixing part and a first transmission assembly, the spraying arm assembly comprises a first spraying arm and a second spraying arm, the first spraying arm is rotationally arranged on the spraying base, the second spraying arm is rotationally arranged on the first spraying arm, and the gear fixing part is used for fixing the spraying base to a preset position; one end of the first transmission assembly is in transmission connection with the gear fixing piece, the other end of the first transmission assembly is in transmission connection with the second spraying arm, when the first spraying arm rotates, the second spraying arm rotates and revolves around the first spraying arm, the washing coverage rate is increased, the washing effect is improved, the gear fixing piece plays a role in fixing the spraying base to a preset position, and the spraying effect is improved. The first transmission assembly and the second transmission assembly are matched to transmit power, the internal structure of the spraying arm device is simplified, the number of parts is reduced, the cost is reduced, and the assembling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a spray device and a dishwasher. Background Art

[0002] Dishwashers are common kitchen appliances in modern households, used to automatically clean tableware, plates and other kitchen utensils. Among them, the spray arm is an important part of the dishwasher, which is responsible for spraying detergent and cleaning water onto the surface of the tableware to achieve a cleaning effect.

[0003] The transmission structure of the electric spray arm in the existing dishwasher is complicated, and the transmission structure can only play the role of transmitting power. Additional fixings are required to fix the spray seat, which increases the number of parts, resulting in numerous parts, difficulty in disassembly and installation, increased maintenance costs and time, and inconvenience to users.

[0004] Therefore, there is an urgent need for a spray device and a dishwasher to solve the problems in the prior art. Utility Model Content

[0005] The utility model aims to provide a spray device, which simplifies the internal structure of the spray arm device, saves the number of parts, reduces the cost, saves assembly time, and improves assembly efficiency.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Spraying device, comprising:

[0008] Sprinkler seat;

[0009] A spray arm assembly, comprising a first spray arm and a second spray arm, wherein the first spray arm is rotatably disposed on the spray seat, and the second spray arm is rotatably disposed on the first spray arm;

[0010] A gear fixing member configured to fix the spray seat at a preset position;

[0011] The first transmission assembly has one end transmission-connected to the gear fixing member, and the other end transmission-connected to the second spray arm.

[0012] Optionally, the gear fixing member comprises an integrally formed fixed gear and a fixing ring, the fixed gear is arranged at the top end of the fixing ring, and the fixing ring is used to fix the spray seat at the preset position;

[0013] The first transmission assembly includes a first planetary gear, which is coaxially fixed with the second spray arm, and the first planetary gear is transmission-connected with the fixed gear.

[0014] Optionally, the first transmission assembly further includes a second planetary gear, the second planetary gear is rotatably disposed in the first spray arm, the first planetary gear is meshed with the second planetary gear, and the second planetary gear is meshed with the fixed gear.

[0015] Optionally, a mounting portion is provided at the preset position, an assembly hole is provided on the mounting portion, and the top end of the spray seat is passed through the assembly hole and is fastened to the fixing ring.

[0016] Optionally, a plurality of limit blocks are provided in the circumferential direction of the spray seat, a plurality of limit grooves are provided on the fixing ring, the fixing ring is screwed and connected to the spray seat, and the limit blocks are screwed and limited in the limit grooves.

[0017] Optionally, the limiting groove is formed by a first limiting protrusion and a second limiting protrusion which are perpendicular to each other, the first limiting protrusion can abut against the side wall of the limiting block, and the second limiting protrusion can abut against the bottom wall of the limiting block.

[0018] Optionally, the spray device further comprises a sealing ring, wherein the sealing ring is sleeved on the spray seat and the sealing ring is located between the fixing ring and the mounting portion.

[0019] Optionally, the first planetary gear is snap-connected to the second spray arm; or, the first planetary gear is fixed to the second spray arm by a fastener.

[0020] Optionally, the spray device further includes a driving member, an output end of which is connected to the first spray arm, the driving member is used to drive the first spray arm to rotate, and the second spray arm is linked to the first spray arm through the first transmission assembly.

[0021] The utility model aims to provide a dishwasher, which simplifies the connection structure of the dishwasher, thereby reducing the manufacturing cost of the dishwasher and improving the production efficiency of the dishwasher.

[0022] To achieve this purpose, the utility model adopts the following technical solutions:

[0023] A dishwasher comprises the above-mentioned spray device.

[0024] Beneficial effects:

[0025] The spray device provided by the utility model comprises a spray seat, a spray arm assembly, a gear fixing part and a first transmission assembly. The spray arm assembly comprises a first spray arm and a second spray arm. The first spray arm is rotatably arranged on the spray seat, and the second spray arm is rotatably arranged on the first spray arm. The gear fixing part is used to fix the spray seat at a preset position. One end of the first transmission assembly is transmission-connected to the gear fixing part, and the other end is transmission-connected to the second spray arm, so that when the first spray arm rotates, the second spray arm rotates and revolves around the first spray arm, thereby improving the washing coverage rate and the washing effect. The gear fixing part plays a role in fixing the spray seat to the preset position, and at the same time plays a role in cooperating with the first transmission assembly to transmit power, thereby simplifying the internal structure of the spray arm device, saving the number of parts, reducing costs, saving assembly time, and improving assembly efficiency.

[0026] The dishwasher provided by the utility model comprises the above-mentioned spray device, which simplifies the transmission structure inside the dishwasher, thereby reducing the manufacturing cost of the dishwasher and improving the production efficiency of the dishwasher. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the spray device provided by the utility model;

[0028] Figure 2 It is a cross-sectional view of the spray device provided by the utility model;

[0029] Figure 3 It is a structural schematic diagram of the first transmission assembly provided by the utility model;

[0030] Figure 4 It is an exploded view of the second spray arm and the first planetary gear provided by the utility model;

[0031] Figure 5 It is a schematic diagram of a spraying area formed by the spraying device provided by the utility model;

[0032] Figure 6 It is an exploded view of the spray device provided by the utility model;

[0033] Figure 7 yes Figure 2 A partial enlarged view of point A in the middle.

[0034] In the figure:

[0035] 10. Inner liner;

[0036] 100, spray seat; 110, sliding cavity; 120, slider assembly; 121, slider; 1211, tongue portion; 12111, first guide slope; 12112, second guide slope; 1212, limit portion; 12121, first accommodating groove; 122, elastic member; 123, cover; 1231, second accommodating groove; 130, limit block; 1311, third guide slope; 132, anti-loosening protrusion;

[0037] 200, spray arm assembly; 210, first spray arm; 211, first spray hole; 212, hook; 220, second spray arm; 221, second spray hole;

[0038] 300, first transmission assembly; 310, fixed gear; 320, first planetary gear; 321, hook groove; 330, second planetary gear; 340, fixing ring; 341, first limiting convex part; 342, second limiting convex part; 3421, anti-loosening groove; 343, sealing ring;

[0039] 400, driving parts;

[0040] 600, rotating sleeve; 610, annular groove; 630, guiding cone surface;

[0041] 700. Position detection component. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0043] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0046] This embodiment provides a spray device such as Figure 1-Figure 5 As shown, the spray device includes a spray seat 100, a spray arm assembly 200, a gear fixing member and a first transmission assembly 300. The spray arm assembly 200 includes a first spray arm 210 and a second spray arm 220. The first spray arm 210 is rotatably arranged on the spray seat 100, and the second spray arm 220 is rotatably arranged on the first spray arm 210. The gear fixing member is used to fix the spray seat 100 on the inner tank 10 of the dishwasher. One end of the first transmission assembly 300 is transmission-connected to the gear fixing member, and the other end is connected to the inner tank 10 of the dishwasher. The second spray arm 220 is transmission-connected. When the first spray arm 210 rotates, the second spray arm 220 rotates and revolves around the first spray arm 210, thereby increasing the washing coverage and improving the washing effect. The gear fixing member serves to fix the spray seat 100 to the inner tank 10 of the dishwasher, and at the same time cooperates with the first transmission assembly 300 to transmit power, thereby simplifying the internal structure of the spray arm device, saving the number of parts, reducing costs, saving assembly time, and improving assembly efficiency.

[0047] Specifically, in this embodiment, the preset position is set on the inner tank 10 of the dishwasher for explanation.

[0048] like Figure 3 and Figure 5As shown, the gear fixing member includes an integrally formed fixed gear 310 and a fixing ring 340, the fixed gear 310 is arranged at the top of the fixing ring 340, and the fixing ring 340 is used to fix the spray seat 100 on the inner tank 10 of the dishwasher; the first transmission assembly 300 includes a gear fixing member and a first planetary gear 320, the first planetary gear 320 is coaxially fixed with the second spray arm 220, and the first planetary gear 320 is transmission-connected with the fixed gear 310, ensuring that when the first spray arm 210 rotates, the second spray arm 220 is linked with the first spray arm 210, thereby increasing the washing area and improving the cleaning effect. In addition, the integrally formed gear fixing member ensures the stability and reliability of the structure, and reduces the number of parts and the complexity of the assembly process.

[0049] Alternatively, if Figure 2-Figure 3 As shown, the first transmission assembly 300 also includes at least one second planetary gear 330, and the second planetary gear 330 is rotatably arranged on the first spray arm 210. The first planetary gear 320 is meshed with the second planetary gear 330, and the second planetary gear 330 is meshed with the fixed gear 310, thereby increasing the distance between the rotation axis of the second spray arm 220 and the rotation axis of the first spray arm 210, thereby further increasing the coverage of the washing area and improving the cleaning effect of the dishwasher.

[0050] Specifically, the present embodiment includes two second planetary gears 330, the first planetary gear 320, the two second planetary gears 330 and the fixed gear 310 are meshed in sequence and arranged in a straight line. With this arrangement, the structure of the first transmission assembly 300 is more compact and occupies less space, which is conducive to the rational use of the internal space of the dishwasher. In addition, with the meshing action of the gears, the first planetary gear 320 and the second planetary gear 330 both rotate around the fixed gear 310 at the same time, thereby realizing that the second spray arm 220 rotates around the first spray arm 210 to form a Figure 5 The spray area shown increases the washing area of ​​the spray device and improves the washing effect. It should be noted that multiple second planetary gears 330 can be set according to actual transmission requirements, such as 3, 4, 5 second planetary gears 330, so that the spray device can adapt to the requirements of different dishwasher models and specifications, and can also be adjusted according to specific working conditions and environments to achieve the best transmission effect and performance.

[0051] Optionally, the first spray arm 210 includes a first spray arm body, and the first spray arm body is provided with a plurality of first spray holes 211 along the length direction of the first spray arm body. The second spray arm 220 includes at least one second spray arm body, and the second spray arm body is rotatably arranged at one end of the first spray arm body, and the second spray arm body is provided with a plurality of second spray holes 221 along the length direction of the second spray arm body. The second spray holes 221 are connected with the first spray holes 211, and the first spray holes 211 are connected with the washing pump through the spray seat 100, so that when the first spray arm body and the second spray arm body rotate, the spray area formed by the clean water sprayed from the first spray holes 211 and the second spray holes 221 is rectangular.

[0052] Preferably, the second spray arm 220 includes three second spray arm bodies, and the three second spray arm bodies are evenly spaced along the circumferential direction of the rotation of the second spray arm 220, that is, the angle between two adjacent second spray arm bodies is 60°, so as to form a trident-shaped second spray arm 220, and the gear ratio of the fixed gear 310 to the second planetary gear 330 is 4:1, and the gear ratio of the first planetary gear 320 to the second planetary gear 330 is 1:1, so the gear ratio of the fixed gear 310 to the first planetary gear 320 is 4:1. The ratio is 4:1, the rotation axis of the first spray arm 210 is coaxial with the axis of the fixed gear 310, and the second spray arm 220 is linked with the first spray arm 210. Therefore, for every rotation of the first spray arm 210, the trident-shaped second spray arm 220 rotates four times around the first spray arm 210, that is, the transmission ratio of the first spray arm 210 to the second spray arm 220 is 1:4. Such a design can further improve the cleaning efficiency and coverage area of ​​the spray device, ensuring that the tableware can be fully cleaned.

[0053] It is understandable that the inner tank 10 of the dishwasher is rectangular, and the corresponding tableware is also placed in a rectangular shape. During the rotation and cleaning process of the spray arm assembly 200, there are often more blind spots for cleaning at the four corners of the bowl basket. After the second spray arm 220 is set to a trident shape, and the transmission ratio of the first spray arm 210 to the second spray arm 220 is set to 1:4, the hole on the second spray arm 220 can be rotated to the farthest four corners, and the blind spots at the four corners can be cleaned, thereby achieving a better cleaning effect and improving the overall performance and user experience of the dishwasher. In other embodiments, the transmission ratio of the first spray arm 210 to the second spray arm 220 can be changed according to actual needs to adapt to the transmission requirements.

[0054] In other embodiments, when there are multiple second spray arm bodies, the multiple second spray arm bodies are evenly distributed circumferentially along the rotation axis of the second spray arm, and the second spray arm 220 may include four second spray arm bodies, five second spray arm bodies or six second spray arm bodies. The number of second spray arm bodies can be adaptively adjusted according to actual cleaning needs to achieve the best cleaning effect.

[0055] Optionally, when the transmission ratio of the first spray arm 210 and the second spray arm 220 is a rational number or an irrational number, the cleaning area formed by the first spray arm 210 and the second spray arm 220 is a rectangle. Regardless of whether the ratio of the first spray arm 210 to the second spray arm 220 is a rational number or an irrational number, the formed spray area has a higher coverage rate than a conventional spray area, thereby improving the washing effect.

[0056] Furthermore, when the transmission ratio of the first spray arm 210 and the second spray arm 220 is a rational number, such as the above-mentioned 1:4, the position of the second spray arm 220 can be accurately controlled to achieve directional washing. The transmission ratio of the first spray arm 210 and the second spray arm 220 can be adaptively changed according to actual needs, such as 1:2, 1:4, 1:6, etc., to meet different washing needs and specific working conditions of the dishwasher.

[0057] Specifically, in this embodiment, the preset position is set on the inner tank 10 of the dishwasher, and a mounting portion is provided on the inner tank 10, and an assembly hole is provided on the mounting portion. The top end of the spray seat 100 is passed through the assembly hole and connected with the fixing ring 340, and at least part of the inner tank 10 is clamped between the fixing ring 340 and the spray seat 100, thereby realizing the rapid assembly of the spray arm seat 100.

[0058] Optionally, the top of the spray seat 100 is provided with a plurality of limit blocks 130 along the circumferential direction of the spray seat 100, and the inner side of the fixing ring 340 is provided with a plurality of limit grooves along the circumferential direction of the fixing ring 340. When the top of the spray seat 100 is passed through the assembly hole of the dishwasher inner tank 10, the fixing ring 340 is rotatably assembled on the top of the spray arm, and each limit block 130 is screwed and limited in the corresponding limit groove, and part of the inner tank 10 is clamped between the fixing ring 340 and the spray seat 100, thereby fixing the spray seat 100 on the inner tank 10.

[0059] Alternatively, if Figure 6 As shown, the limiting groove is formed by the first limiting protrusion 341 and the second limiting protrusion 342, and the second limiting protrusion 342 is perpendicular to the first limiting protrusion 341. After the fixing ring 340 is rotated into place, the first limiting protrusion 341 is in contact with the side wall of the limiting block 130, and the second limiting protrusion 342 is in contact with the bottom wall of the limiting block 130. The first limiting protrusion 341 is used to limit the fixing ring 340 from continuing to rotate along the circumferential direction of the spray seat 100, and the second limiting protrusion 342 is used to limit the fixing ring 340 from detaching from the spray seat 100 along the axial direction of the spray seat 100.

[0060] Optionally, an anti-loosening groove 3421 is provided on the second limiting protrusion 342, and an anti-loosening protrusion 132 is provided on the spray seat 100. After the fixing ring 340 is rotated into place, the anti-loosening protrusion 132 is limited in the anti-loosening groove 3421, thereby preventing the fixing ring 340 from loosening due to vibration and the like, thereby improving the tightness of the fixing ring 340.

[0061] Optionally, the spray device also includes a sealing ring 343, which is mounted on the spray seat 100 and located between the spray seat 100 and the inner tank 10. The sealing ring 343 can ensure the sealing of the connection between the spray seat 100 and the inner tank 10 to prevent the inner tank 10 from leaking water, and prevent dust and other impurities from entering the inner tank 10 of the dishwasher along the gap.

[0062] Optionally, along the direction in which the fixing ring 340 is screwed in, a third guiding slope 131 is provided at the end of the limiting block 130 . The third guiding slope 131 can reduce the resistance when the fixing ring 340 is screwed in, thereby improving the assembly efficiency.

[0063] Alternatively, if Figure 4 As shown, the first planetary gear 320 is snap-connected with the first planetary gear 320. A through hole connecting the first spray arm 210 and the second spray is provided at the rotation axis of the first planetary gear 320. Clean water in the first spray arm 210 flows into the second spray arm 220 through the through hole and is sprayed out from the second spray arm 220. Along the circumferential direction of the through hole, the hole wall of the through hole is provided with three hook grooves 321. The second spray arm 220 is provided with three hook buckles 212, and each hook buckle 212 can be snapped into a hook groove 321, so that the second spray arm 220 can be quickly installed on the first spray arm 210.

[0064] Furthermore, one of the three hook grooves 321 is a wide hook groove 321, and one of the three barb buckles is a wide hook buckle 212. During installation, the wide hook buckle 212 is inserted into the wide hook groove 321 and clamped, and the other two hook buckles 212 are clamped in the corresponding ground hook grooves 321, thereby achieving an anti-fool effect and improving assembly efficiency.

[0065] In some embodiments, the first planetary gear 320 is fixed to the second spray arm 220 by fasteners, which improves the tightness of the connection between the first planetary gear 320 and the second spray arm 220, prevents loosening or falling off during operation, ensures the normal operation of the transmission system, and improves the working efficiency and cleaning effect of the spray device.

[0066] Alternatively, if Figure 2As shown, the spray device further includes a driving member 400, the output end of which is connected to the first spray arm 210, and the driving member 400 is used to drive the first spray arm 210 to rotate, and the second spray arm 220 is linked to the first spray arm 210 through the first transmission assembly 300. The driving member 400 is a driving motor, and the driving motor has stable power, which can ensure the stable operation of the spray device, and driven by the driving motor, there is no need to separately set a spray hole of a reverse force to provide power for the spray arm assembly, which reduces water consumption and saves water resources.

[0067] Alternatively, if Figure 6 As shown, the spray device also includes a rotating sleeve 600, which is rotatably arranged in the spray seat, the rotating sleeve 600 is coaxial with the rotation axis of the first spray arm 210, one end of the rotating sleeve 600 is fixedly connected to the first spray arm, and the other end of the rotating sleeve 600 is connected to the output shaft of the driving member 400; the rotating sleeve 600 plays a role in power transmission, and because the rotating sleeve 600 is rotatably arranged in the spray seat 100, the rotation stability of the spray arm assembly 200 is improved.

[0068] Alternatively, if Figure 6-Figure 7 As shown, an annular groove 610 is provided on the outer wall of the rotating sleeve 600, and a slider assembly 120 is provided on the spray seat 100. The slider assembly 120 includes a slider 121 and an elastic member 122. A sliding cavity 110 is provided in the spray seat 100. The opening direction of the sliding cavity 110 is perpendicular to the axial direction of the spray seat 100. The slider 121 is slidably arranged in the sliding cavity 110. One end of the elastic member 122 abuts against the slider 121, and the other end abuts against the bottom wall of the sliding cavity 110. Under the action of the elastic force of the elastic member 122, at least part of the slider 121 can be inserted into the annular groove 610 of the rotating sleeve 600. The slider 121 allows the rotating sleeve 600 to rotate along the circumferential direction of the spray seat 100, while limiting the rotating sleeve 600 from moving along the axial direction of the spray seat 100, thereby ensuring that the rotating sleeve 600 will not fall out of the spray seat 100.

[0069] Specifically, when the rotating sleeve 600 is inserted into the spray seat 100, the outer wall of the rotating sleeve 600 squeezes the slider 121 so that the slider 121 retreats into the sliding cavity 110. At this time, the elastic member 122 is compressed and accumulates elastic force. When the rotating sleeve 600 is inserted into place, the annular groove 610 is opposite to the slider 121. Under the elastic force of the elastic member 122, part of the slider 121 extends out of the sliding cavity 110 and is inserted into the annular groove 610, so that it is fixed in the spray seat 100. The disassembly process of the rotating sleeve 600 is opposite to the installation process, which will not be repeated here.

[0070] Optionally, in this embodiment, two slider assemblies 120 are provided on the spray seat 100 , and the two slider assemblies 120 are relatively arranged on both sides of the spray seat 100 , thereby ensuring the force balance of the rotating sleeve 600 and improving the stability of the rotating sleeve 600 .

[0071] Optionally, the bottom wall of the sliding cavity 110 is provided with a first opening, and the slider assembly 120 also includes a cover 123, which blocks the first opening and is detachably connected to the spray seat 100. The setting of the cover 123 facilitates the assembly of the slider 121 and the elastic member 122 in the sliding cavity 110.

[0072] Optionally, the cover 123 is fastened to the spray seat 100 by screws. Specifically, a through hole is provided on the cover 123, and a threaded hole is provided at a position corresponding to the through hole on the spray seat 100, and the screw passes through the through hole and is inserted into the threaded hole, and the screw is threadedly connected to the spray seat 100, so as to stably fix the cover 123 on the spray seat 100.

[0073] Optionally, the cover 123 is threadedly connected to the spray seat 100. Specifically, the cover 123 is provided with a first thread, and the inner wall of the sliding cavity 110 is provided with a second thread, and the first thread and the second thread are screwed together to ensure that the cover 123 is stably fixed on the spray seat 100.

[0074] Optionally, the cover 123 is snap-fitted with the spray seat 100. Specifically, one of the cover 123 and the spray seat 100 is provided with a first buckle, and the other is provided with a first slot, and the first buckle is snap-fitted to the first slot, so as to quickly install the cover 123 on the spray seat 100 and ensure the stability of the cover 123.

[0075] Optionally, the slider 121 includes a tongue portion 1211 and a limiting portion 1212. A second opening matching the tongue portion 1211 is provided at one end of the sliding cavity 110 close to the flow channel. The tongue portion 1211 can pass through the second opening and be inserted into the annular groove 610. The limiting portion 1212 abuts against the inner side of the second opening. The limiting portion 1212 can limit the tongue portion 1211 from escaping from the sliding cavity 110, thereby preventing the slider 121 from accidentally falling off or shifting during use.

[0076] Alternatively, if Figure 7 As shown, a first receiving groove 12121 is provided at one end of the limiting portion 1212 away from the latch portion 1211, and a second receiving groove 1231 is provided on the cover 123. One end of the elastic member 122 is inserted in the first receiving groove, and the other end is inserted in the second receiving groove 1231 to ensure the normal working state of the elastic member 122 and improve the reliability of the slider assembly 120.

[0077] Optionally, the elastic member 122 is a spring, which can provide a more stable elastic force and has a longer service life, thereby enhancing the stability of the connection and ensuring the normal operation of the spray arm assembly 200.

[0078] Optionally, a guide cone 630 is provided at the bottom of the rotating sleeve 600, and the guide cone 630 is used to guide the rotating sleeve 600 to be assembled in the spray seat 100, and the guide cone 630 can reduce the contact resistance between the rotating sleeve 600 and the slider 121 during the assembly process, so that the rotating sleeve 600 can more easily drive the slider 121 to return to the sliding cavity 110, making it easier for the user to correctly install the rotating sleeve 600 on the spray seat 100.

[0079] Alternatively, if Figure 7 As shown, along the sliding direction of the slider 121, the slider 121 is provided with a first guide bevel 12111 and a second guide bevel 12112 on both sides thereof. The first guide bevel 12111 can reduce the resistance when the rotating sleeve 600 is inserted, ensuring that the slider 121 can be driven back to the sliding cavity 110 by the rotating sleeve 600 when the rotating sleeve 600 is assembled, thereby improving the smoothness and assembly efficiency during the assembly process. The second guide bevel 12112 can reduce the resistance when the rotating sleeve 600 is pulled out, ensuring that the slider 121 can be driven back to the sliding cavity 110 by the rotating sleeve 600 when the rotating sleeve 600 is disassembled, thereby improving the smoothness and assembly efficiency during the disassembly process.

[0080] Optionally, the spray device further includes a position detection assembly 700, which includes a positioning shaft and a position sensor. One end of the positioning shaft is connected to the output shaft of the drive motor, and the other end is connected to the rotating sleeve 600. A protrusion is provided on the positioning shaft, and the position sensor is provided on one side of the positioning shaft. The protrusion can trigger the position sensor. Specifically, the position at which the protrusion triggers the position detection sensor is defined as the initial position of the spray arm assembly 200. The rotation angle of the spray arm assembly 200 can be calculated according to the rotation speed of the drive motor and the running time, so that the drive motor can drive the spray arm assembly 200 to rotate to a preset position, and directional washing can be achieved for highly dirty tableware, further improving the cleaning effect and the user's experience.

[0081] Optionally, the position sensor is a micro switch, which is simple and reliable, and can be accurately triggered by the protrusion to determine whether the spray arm assembly 200 returns to the initial position, and can accurately transmit the signal to the upper-level controller after the spray arm assembly 200 leaves the initial position. The controller controls the rotation time of the spray arm assembly 200 according to the rotation speed of the spray arm assembly 200, thereby ensuring that the spray arm assembly 200 is accurately rotated to the preset position when positioning washing is required, thereby improving the accuracy of washing.

[0082] Optionally, a cross-shaped groove is provided on the rotating sleeve 600, a cross-shaped plug-in portion is provided at one end of the positioning shaft, and an assembly groove and a key groove are provided at the other end of the positioning shaft. The output shaft of the driving motor is inserted into the assembly groove, and then the key is inserted into the key groove, so that the positioning shaft and the output shaft of the driving motor are coaxially fixed; the cross-shaped plug-in portion on the positioning shaft is inserted into the cross-shaped groove of the rotating sleeve 600, so that the rotating sleeve 600 and the positioning shaft are coaxially fixed. This design ensures the coaxial fixation between the rotating sleeve 600 and the positioning shaft and the output shaft of the driving motor, and improves the stability and reliability of the transmission.

[0083] This embodiment also provides a dishwasher, including the above-mentioned spray device, which simplifies the transmission structure inside the dishwasher, thereby reducing the manufacturing cost of the dishwasher and improving the production efficiency of the dishwasher.

[0084] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A spraying device, characterized in that: include: Spray seat (100); A spray arm assembly (200), comprising a first spray arm (210) and a second spray arm (220), wherein the first spray arm (210) is rotatably disposed on the spray seat (100), and the second spray arm (220) is rotatably disposed on the first spray arm (210); A gear fixing member, configured to fix the spray seat (100) at a preset position; The first transmission assembly (300) has one end in transmission connection with the gear fixing member and the other end in transmission connection with the second spray arm (220).

2. The spray device according to claim 1, characterized in that: The gear fixing member comprises an integrally formed fixed gear (310) and a fixing ring (340), wherein the fixed gear (310) is arranged at the top end of the fixing ring (340), and the fixing ring (340) is used to fix the spray seat (100) at the preset position; The first transmission assembly (300) comprises a first planetary gear (320) which is coaxially fixed to the second spray arm (220), and the first planetary gear (320) is transmission-connected to the fixed gear (310).

3. The spray device according to claim 2, characterized in that: The first transmission assembly (300) further comprises a second planetary gear (330), the second planetary gear (330) being rotatably disposed in the first spray arm (210), the first planetary gear (320) being meshed with the second planetary gear (330), and the second planetary gear (330) being meshed with the fixed gear (310).

4. The spray device according to claim 2, characterized in that: A mounting portion is provided at the preset position, and an assembly hole is provided on the mounting portion. The top end of the spray seat (100) is passed through the assembly hole and is tightly connected to the fixing ring (340).

5. The spray device according to claim 4, characterized in that: The spray seat (100) is provided with a plurality of limit blocks (130) in the circumferential direction, the fixing ring (340) is provided with a plurality of limit grooves, the fixing ring (340) is screwed and connected to the spray seat (100), and the limit blocks (130) are screwed and limited in the limit grooves.

6. The spray device according to claim 5, characterized in that: The limiting groove is formed by a first limiting protrusion (341) and a second limiting protrusion (342) which are perpendicular to each other, the first limiting protrusion (341) can abut against the side wall of the limiting block (130), and the second limiting protrusion (342) can abut against the bottom wall of the limiting block (130).

7. The spray device according to claim 4, characterized in that: The spray device further comprises a sealing ring (343), wherein the sealing ring (343) is sleeved on the spray seat (100), and the sealing ring (343) is located between the spray seat (100) and the mounting portion.

8. The spray device according to claim 2, characterized in that: The first planetary gear (320) is snap-connected to the second spray arm (220); or, the first planetary gear (320) is connected to the second spray arm (220) via a fastener.

9. The spray device according to claim 1, characterized in that: The spray device further comprises a driving member (400), an output end of the driving member (400) being connected to the first spray arm (210), the driving member (400) being used to drive the first spray arm (210) to rotate, and the second spray arm (220) being linked to the first spray arm (210) via the first transmission assembly (300).

10. A dishwasher, characterized in that The invention comprises the spraying device according to any one of claims 1 to 9.

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