Drive, housing and dishwasher

Abstract

The present invention discloses a driving device, a base and a dishwasher. The driving device comprises: a base, a rotating member, a transmission member, a transmission shaft and a driving member. The rotating member is rotatably arranged on the base, and the rotating member is used to connect a spray arm; the transmission member is movably arranged on the base, and the transmission member is connected to the rotating member to drive the rotating member to rotate; the transmission shaft is rotatably arranged on the base, and the transmission shaft is connected to the transmission member to drive the transmission member to move; the driving member is arranged on the base, and the driving member is connected to the transmission shaft to drive the transmission shaft to rotate. According to the driving device for the spray arm of the embodiment of the present invention, the spray arm can be driven to achieve directional or fixed-range washing.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a driving device for a spray arm, a seat body applied to the driving device, and a dishwasher comprising the driving device. Background Art

[0002] The working process of a dishwasher is: put the dishes to be washed into the dishwasher, select the washing program, press the corresponding selection switch, turn on the power, and the program controller starts working. When the water reaches a certain temperature, it is sprayed out through the water spray hole of the spray arm. The spray arm rotates under the reaction force of the water spray, and continuously sprays water onto the dishes, thereby reducing the viscosity and adhesion of grease, and then spraying the dirt clean. Since the spray arm of the existing dishwasher is fixed on the base of the dishwasher, its driving force is the reaction force of the water spray. In this way, the flushing angle and flushing range of the spray arm are also relatively fixed, which leads to the existence of cleaning dead angles in the existing dishwasher, and the dishes cannot be thoroughly cleaned. Summary of the invention

[0003] One object of the present invention is to provide a driving device for a spray arm, which can drive the spray arm to achieve directional or range-specific flushing.

[0004] Another object of the present invention is to provide a base, which is suitable for the aforementioned driving device.

[0005] Another object of the present invention is to provide a dishwasher comprising the aforementioned driving device.

[0006] According to an embodiment of the present invention, a driving device for a spray arm comprises: a seat body, a rotating member, a transmission member, a transmission shaft and a driving member, wherein the rotating member is rotatably arranged on the seat body, and the rotating member is used to connect the spray arm; the transmission member is movably arranged on the seat body, and the transmission member is transmission-connected to the rotating member to drive the rotating member to rotate; the transmission shaft is rotatably arranged on the seat body, and the transmission shaft is transmission-connected to the transmission member to drive the transmission member to move; the driving member is transmission-connected to the transmission shaft to drive the transmission shaft to rotate.

[0007] The driving device for the spray arm according to the embodiment of the present invention can drive the spray arm to achieve directional or range-specific flushing.

[0008] In addition, the driving device for the spray arm according to the above embodiment of the present invention may also have the following additional technical features:

[0009] Optionally, the rotation center axis of the rotating member extends in the longitudinal direction, the transmission member is movably arranged on the base body in the transverse direction, the transmission shaft extends in the vertical direction, and the longitudinal direction, the transverse direction and the vertical direction are perpendicular to each other.

[0010] Optionally, the seat body is provided with a plurality of transmission members arranged at intervals in the vertical direction, and the transmission shaft includes a plurality of transmission shafts, the plurality of transmission shafts are correspondingly transmission-connected to the plurality of transmission members, and each of the transmission members is transmission-connected to at least one rotating member.

[0011] Optionally, the middle part of the transmission member along the lateral direction is transmission-connected to the transmission shaft, and both ends of the transmission member along the lateral direction are transmission-connected to at least one rotating member, so as to transmit the transmission to multiple rotating members through one transmission member.

[0012] Optionally, the transmission shaft includes a shaft portion and a first gear, the transmission member includes a first rack, and the first gear and the first rack are meshed with each other.

[0013] Optionally, the transmission member also includes a first stop bar, which is arranged relatively parallel to the first rack, the teeth of the first rack are arranged on the side of the first rack facing the first stop bar, and the first gear is rotatably arranged between the first stop bar and the first rack.

[0014] Optionally, a plurality of the first gears are coaxially connected to the shaft portion, the plurality of the first gears are arranged along the axial direction of the shaft portion, and the plurality of the first gears are fixedly connected to the same shaft portion, the transmission member includes a plurality of members corresponding to the plurality of the first gears, and each of the transmission members is correspondingly transmission-connected to at least one of the rotating members.

[0015] Optionally, one end of the shaft portion is connected to the driving member and the other end is coaxially connected to a first gear, and the first gear is separately arranged and fixedly connected to the shaft portion.

[0016] Optionally, the driving member is arranged on the seat body.

[0017] Optionally, a positioning groove is provided on the seat body, the positioning groove and the transmission shaft extend in the same direction, and the transmission shaft is rotatably embedded in the positioning groove.

[0018] Optionally, a buckle structure is provided in the positioning groove, and an annular groove is provided on the circumferential surface of the transmission shaft, and the annular groove is engaged with the buckle structure to position the transmission shaft and enable the transmission shaft to rotate.

[0019] Optionally, a fixing piece is further provided on the base body, the fixing piece is connected to the base body, and the fixing piece closes the positioning groove.

[0020] Optionally, the seat body includes a bottom plate, a first rib and a second rib, the first rib and the second rib are connected to the bottom plate and arranged opposite to each other, the positioning groove is defined between the first rib and the second rib, the fixing member includes a baffle, a first flange and a second flange, the baffle covers the positioning groove, the first flange and the second flange are respectively arranged on the outside of the first rib and the second rib, the outer side surface of the first rib and the outer side surface of the second rib are both provided with a first buckle part, the first flange and the second flange both include a spring sheet, a second buckle part is provided on the spring sheet, one of the first buckle part and the second buckle part is a clamping hole and the other is a clamping bulge, and the clamping bulge is correspondingly engaged with the clamping hole.

[0021] Optionally, the rotating member includes a second gear, the transmission member includes a second rack, and the second gear and the second rack are meshed with each other.

[0022] Optionally, the transmission member also includes a second stop bar, which is arranged relatively parallel to the second rack, the teeth of the second rack are arranged on the side of the second rack facing the second stop bar, and the second gear is rotatably arranged between the second stop bar and the second rack.

[0023] Optionally, the transmission member includes a plurality of the second racks, and the plurality of the second racks are respectively used to drive the rotating member, so that one transmission member drives a plurality of spray arms to rotate.

[0024] Optionally, the transmission member includes a first rack and a second rack, the transmission shaft includes a first gear, the rotating member includes a second gear, the first rack is meshed with the first gear, the second rack is meshed with the second gear, the first rack and the second rack both extend laterally, and the teeth of the first rack and the teeth of the second rack are perpendicular to each other.

[0025] Optionally, a guide groove is provided on the seat body, the transmission member is embedded in the guide groove, and the transmission member is movable along the extension direction of the guide groove.

[0026] Optionally, support blocks are provided on two opposite sides of the guide groove, and the support blocks are used to support the movement of the transmission member.

[0027] Optionally, the transmission member is constructed as an integral structure.

[0028] Optionally, a support rod is provided on the seat body, and the rotating member is rotatably supported on the support rod.

[0029] According to the seat body of the present invention, the seat body is suitable for the aforementioned driving device for the spray arm, and a guide groove is provided on the seat body, the guide groove extends in the transverse direction, and the guide groove is configured to accommodate the transmission member and guide the transmission member to move in the transverse direction.

[0030] Optionally, the seat body is provided with a plurality of guide grooves arranged at intervals along the vertical direction, and the seat body is also provided with a positioning groove, the positioning groove extends vertically, and the guide groove and the positioning groove intersect and are connected, and the positioning groove is configured to accommodate a transmission shaft and to be suitable for the rotation of the transmission shaft.

[0031] Optionally, the positioning groove is arranged in the middle of the base body along the horizontal direction.

[0032] Optionally, the seat body includes a base plate and a first rib, a second rib, a third rib and a fourth rib arranged on the base plate, the first rib and the second rib extend vertically and are spaced apart horizontally to construct the positioning groove, and the third rib and the fourth rib extend horizontally and are spaced apart vertically to construct the guide groove.

[0033] The dishwasher according to the present invention comprises: a machine body and a driving device, wherein a washing chamber is arranged in the machine body; and the driving device is the aforementioned driving device for the spray arm.

[0034] Optionally, the seat body is provided with a plurality of transmission members arranged at intervals in the vertical direction, and the transmission shaft includes a plurality of transmission shafts, the plurality of transmission shafts are correspondingly transmission-connected to the plurality of transmission members, and each of the transmission members is transmission-connected to at least one rotating member.

[0035] Optionally, the seat body is provided with a plurality of transmission members arranged at intervals in the vertical direction, one transmission shaft is transmission-connected to the plurality of transmission members, and each transmission member is transmission-connected to at least one rotating member.

[0036] Optionally, the dishwasher further comprises a spray arm, wherein the spray arm is adapted to be connected to the rotating member, and the spray arm extends coaxially with a rotation center axis of the rotating member.

[0037] Optionally, the seat body is disposed on a back plate of the machine body or the seat body is integrated with the back plate of the machine body.

[0038] Optionally, the driving member is arranged on one vertical end of the base body. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of a spray arm assembly according to an embodiment of the present invention.

[0040] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the A1 area in the middle circle.

[0041] Figure 3 yes Figure 1 A partial enlarged schematic diagram of the A2 area in the middle circle.

[0042] Figure 4 is a cross-sectional view of a spray arm assembly according to an embodiment of the present invention.

[0043] Figure 5 yes Figure 4 A partial enlarged schematic diagram of the A3 area in the middle circle.

[0044] Figure 6 yes Figure 4 A partial enlarged schematic diagram of the A4 area in the middle circle.

[0045] Figure 7 yes Figure 4 Cross-sectional view of the middle section B1-B1.

[0046] Figure 8 yes Figure 7 A partial enlarged schematic diagram of the A5 area in the middle circle.

[0047] Fig. 9 yes Figure 7 A partial enlarged schematic diagram of the A6 area in the middle circle.

[0048] Fig.10 yes Figure 4 Cross-sectional view of the middle section B2-B2.

[0049] Fig.11 yes Fig.10 A partial enlarged schematic diagram of the A7 area in the middle circle.

[0050] Fig.12 Schematic diagram of an exploded view of a spray arm assembly according to an embodiment of the present invention.

[0051] Fig.13 yes Fig.12 A partial enlarged schematic diagram of the A8 area in the middle circle.

[0052] Fig.14 Schematic diagram of a fixing member of a spray arm assembly according to an embodiment of the present invention.

[0053] Fig.15 Schematic diagram of a spray arm assembly according to another embodiment of the present invention.

[0054] Fig.16 yes Fig.15 sectional view of .

[0055] Fig.17 yes Fig.16 Cross-sectional view of the middle section B3-B3.

[0056] Fig.18 yes Fig.16 Cross-sectional view of the middle section B4-B4.

[0057] Fig.19 yes Fig.16 Cross-sectional view of the middle section B5-B5.

[0058] Fig. 20 Schematic diagram of an explosion of a spray arm assembly according to another embodiment of the present invention.

[0059] Reference numerals:

[0060] Spray arm assembly 100, seat body 11, bottom plate 111, first rib 112, second rib 113, buckle structure 114, positioning groove 1101, first buckle portion 1102, guide groove 1103, support block 1104, support rod 1105, rotating member 12, second gear 121, transmission member 13, first rack 131, first stop bar 132, second rack 133, second stop bar 134, transmission shaft 14, shaft portion 141, first gear 142, annular groove 1401, driving member 15, water distribution member 16, sleeve 161, boss 162, sealing ring 163, fixing member 17, baffle 171, first flange 172, second flange 173, spring piece 174, second buckle portion 175, spray arm 20. DETAILED DESCRIPTION

[0061] The present invention can adopt a slender spray arm, and the spray arm 20 can rotate 360° around its own axis. The spray arm 20 is driven by a motor to achieve regional washing and fixed-point washing. The technical solution provided by the present invention is that the spray arm 20 is driven by a motor, a gear and a rack transmission structure. The two spray arms 20 are symmetrical in structure, and the transmission scheme can be divided into 3 layers, each layer is driven by a rack gear. In order to realize the drive of the spray arm 20, the present invention provides a driving device for the spray arm 20, through which the spray arm 20 can be driven to rotate.

[0062] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0063] like Figures 1 to 20According to an embodiment of the present invention, the driving device for the spray arm 20 comprises: a seat body 11, a rotating member 12, a transmission member 13, a transmission shaft 14 and a driving member 15. The seat body 11 can provide support for the driving device, the rotating member 12 is used to connect the spray arm 20, and during the rotation of the rotating member 12, the spray arm 20 will be driven to rotate. The combination of the transmission member 13 and the transmission shaft 14 is suitable for transmitting the power of the driving member 15 to the rotating member 12, so that the rotating member 12 (spray arm 20) is driven to rotate by the driving member 15.

[0064] Specifically, the rotating member 12 is provided on the base 11, and the rotating member 12 is rotatable relative to the base 11. The rotating member 12 can be used to connect the spray arm 20. When the spray arm 20 is connected to the driving device, the spray arm 20 is connected to the rotating member 12. During the rotation of the rotating member 12, the spray arm 20 will be driven to rotate. The transmission member 13 is provided on the base 11, and the transmission member 13 is movable relative to the base 11. The transmission member 13 can be connected to the rotating member 12 in a transmission manner. The movement of the transmission member 13 can drive the rotating member 12 to rotate, that is, the movement of the transmission member 13 is converted into the rotation of the rotating member 12. The transmission member 13 can perform translation or a combination of translation and rotation. The transmission shaft 14 is provided on the base 11, and the transmission shaft 14 is rotatable relative to the base 11. The transmission shaft 14 can be connected to the transmission member 13 in a transmission manner. The rotation of the transmission shaft 14 can drive the transmission member 13 to move. The driving member 15 may be in driving connection with the transmission shaft 14 , and the driving member 15 may drive the transmission shaft 14 to rotate.

[0065] During the use of the driving device, the driving member 15 can drive the transmission shaft 14 to rotate, and the transmission member 13 is connected to the transmission shaft 14, so that the transmission shaft 14 transmits the power of the driving member 15 to the transmission member 13, and the transmission member 13 is connected to the rotating member 12, so that the power of the driving member 15 is transmitted to the rotating member 12 through the transmission member 13, wherein, during the power transmission process, the rotational motion of the transmission shaft 14 is converted into the movement of the transmission member 13, and the movement of the transmission member 13 is converted into the rotation of the rotating member 12.

[0066] According to the driving device for the spray arm 20 of the embodiment of the present invention, directional or fixed-range flushing can be achieved through the driving action of the driving member 15. Moreover, in the process of power transmission, a transmission method of rotation → movement → rotation is adopted, which can facilitate the arrangement of various components, reduce the requirements for the positional relationship between the various components, and improve the scope of application and applicability of the driving device.

[0067] In addition, in the present invention, in the transmission process of rotation → movement → rotation, the spray arm 20 can be driven with a smaller torque by setting the transmission in each stage, so that the driving of the spray arm 20 is more labor-saving, and the driving of multiple rotating parts 12 and the spray arm 20 can be achieved through the driving member 15. Of course, the driving device in the present invention can also be used to drive only one rotating part 12 or the spray arm 20.

[0068] Among them, the spray arm 20 can be configured to connect the end portion to the rotating member 12. Of course, the other position (such as the middle portion) of the spray arm 20 can also be connected to the rotating member 12. The spray arm 20 of the present invention can be configured to be a straight tube, and the driving device can be used to drive the spray arm 20 to rotate around the central axis of the spray arm 20. Of course, the spray arm 20 can also be rotated around other axes through the rotating member 12. In addition, the spray arm 20 of the present invention can be provided with nozzles, channels and other structures. Therefore, a corresponding water distribution member 16 can be provided on the driving device of the present invention to realize water supply, detergent supply, etc. to the spray arm 20. The water distribution member 16 in the present invention can have different forms, and the present invention also provides a water distribution structure of a specific embodiment, thereby effectively improving the stability and practicality of the spray arm 20 during water spraying, cleaning, etc.

[0069] In the present invention, the driving member 15 drives the transmission shaft 14 to rotate, and can be configured such that the driving member 15 drives the transmission shaft 14 to rotate around the central axis of the transmission shaft 14. The transmission shaft 14, the rotating member 12, and the transmission member 13 in the present invention can be arranged in different orientations, for example, the transmission shaft 14 is arranged to be parallel to the central axis of the rotating member 12. Of course, in order to further improve the practicality and application scope of the driving device in the present application, the present invention provides a driving device of a specific embodiment.

[0070] Combination Figures 1 to 20 In some embodiments of the present invention, the central axis of rotation of the rotating member 12 extends in the longitudinal direction, the transmission member 13 is movably disposed on the base body 11 in the transverse direction, and the transmission shaft 14 extends in the vertical direction. For ease of understanding, the longitudinal, transverse and vertical directions described in the present invention may be perpendicular to each other. It should be noted that the longitudinal, transverse and vertical directions in the present invention are not necessarily perpendicular to each other, and they may also have other angles therebetween, for example, the transverse and vertical directions are set to have an angle between 0° and 90°, and the longitudinal direction is set to be perpendicular to the transverse and vertical directions.

[0071] In a specific embodiment of the present invention, the longitudinal direction can be the front-to-back direction, the transverse direction can be the left-to-right direction, and the vertical direction can be the up-and-down direction. Of course, the transverse, vertical and longitudinal directions in the present invention can also be set to other forms. Of course, in order to clearly and completely describe the technical scheme of the present invention, the description in the present invention is mainly based on the orientation shown in the accompanying drawings. This is mainly for the convenience of displaying the technical scheme to be protected by the present invention and cannot be understood as a limitation on the scope of protection of the present invention.

[0072] In the aforementioned embodiment, the central axes of rotation of the transmission shaft 14 and the rotating member 12 are arranged to be substantially vertical, and the power transmission is realized by the movement of the transmission member 13. The transmission shaft 14, the transmission member 13 and the rotating member 12 can be similarly moved on the same plane (a plane composed of a horizontal direction and a vertical direction), and the thickness of the driving device (the dimension along the longitudinal direction) can be greatly reduced. When the driving device is applied to a dishwasher, the driving device can be arranged at the position where the side wall, top wall, back plate and bottom plate 111 of the dishwasher are located. At this time, the walls of the dishwasher will have a large enough area to accommodate the driving device, and the thickness of the driving device is also relatively small. Therefore, the space occupied by the driving device can be greatly reduced, and the space utilization rate can be improved.

[0073] In addition, the present invention realizes power transmission of the driving member 15 through the transmission of the transmission shaft 14, and the transmission member 13 extends vertically. Therefore, multiple transmission members 13 and rotating members 12 can be arranged vertically to realize power transmission of multiple transmission members 13 and rotating members 12 through the transmission shaft 14, thereby effectively simplifying the structure of the driving device. In this regard, the present invention provides a more complete implementation method below.

[0074] In addition, in the present invention, the driving member 15 needs to provide power to the entire driving device. The presence of the driving member 15 has a greater impact on the driving device. Therefore, in the present invention, the driving member 15 can be set at one end of the seat 11 in the vertical direction, which can reduce the washing space occupied by the motor in the dishwasher. Specifically, when the driving device is applied to the dishwasher, the driving device can be set on the wall of the dishwasher (of course, it can also be other positions). The middle position of the driving device corresponds to the central area of ​​the dishwasher, which has a greater impact on the washing space in the dishwasher. Therefore, in the present invention, by setting the driving member 15 at one end of the seat 11 in the vertical direction, the impact of the driving member 15 on the washing space in the dishwasher can be reduced. Among them, the driving member 15 in the present invention can be a motor. Generally, the circumferential length of the motor is greater than the radial size of the motor. In the present invention, the motor is set at one end of the seat 11 in the vertical direction. The space occupied by the motor can also be reduced by setting the motor and the transmission shaft 14 coaxially, further improving the space utilization.

[0075] Of course, those skilled in the art can understand that, in order to realize the rotation of the transmission shaft 14, there are enough implementation methods in the field. In the above description of the present invention, the driving member 15 is set as a motor, which is only a specific implementation method of the present invention and is not a limitation on the protection scope of the present invention.

[0076] Similarly, the transmission structure of the transmission shaft 14 and the transmission member 13, and the transmission mechanism of the transmission member 13 and the rotating member 12 in the present invention can all be in a variety of different forms, such as through a connecting rod mechanism, a slider mechanism, etc. Of course, other transmission mechanisms in the prior art can also be used in the present invention. The present invention described below mainly uses a gear rack mechanism to realize the power transmission from rotation to movement and from movement to conversion. This is mainly to achieve a full description of the technical solution of the present application, and is not a limitation on the scope of protection of the present invention.

[0077] Optionally, in the present invention, multiple transmission members can be connected by a transmission shaft, so that multiple transmission members can be driven by a transmission shaft, that is, the power of the driving member is transmitted to multiple transmission members by a transmission shaft. Specifically, multiple transmission members arranged along the vertical interval can be set on the base body, and a transmission shaft is connected to the multiple transmission members, so that multiple transmission members can be connected by a transmission shaft, and multiple transmission members can be driven to move by a transmission shaft. In addition, each transmission member can be connected to at least one rotating member, so that the rotation of multiple rotating members can be realized by a transmission shaft, and then the driving of multiple spray arms can be realized, thereby simplifying the structure of the driving device.

[0078] In addition, in the present invention, multiple transmission members can be connected by multiple transmission shafts, and multiple transmission members can be driven by multiple transmission shafts, wherein multiple transmission shafts can be driven by the same motor, or multiple transmission shafts can be driven by different motors. Specifically, multiple transmission members arranged vertically can be provided on the base body, and the multiple transmission members can be arranged at intervals from each other, and multiple transmission shafts can be provided, and the multiple transmission shafts can be correspondingly connected in transmission with the multiple transmission members, and each transmission member is connected in transmission with at least one rotating member. In this way, multiple transmission members can be connected by multiple transmission shafts, and multiple transmission members can be driven to move by multiple transmission shafts. In addition, each transmission member can be connected in transmission with at least one rotating member, and therefore, the rotation of multiple rotating members can be realized by multiple transmission shafts, thereby realizing the driving of multiple spray arms.

[0079] The multiple transmission shafts and the multiple transmission members may be connected in a one-to-one transmission manner, and the number of the multiple transmission shafts and the multiple transmission members may be different, for example, three transmission members, two transmission shafts, etc. When there are multiple transmission shafts, each of the multiple transmission shafts may be used to drive one or more transmission members.

[0080] Optionally, a transmission member in the present invention can be configured to drive multiple rotating members, that is, after a transmission member is driven by a driving member and a transmission shaft, the transmission member can drive multiple rotating members to rotate, thereby realizing the driving of multiple spray arms. Optionally, the middle part of the upper lateral side of the transmission member can be connected to the transmission shaft, and both ends of the transmission member in the lateral side are connected to at least one rotating member, so as to transmit to multiple rotating members through one transmission member. In other words, the middle part of the transmission member is connected to the transmission shaft, and the left and right ends of the transmission member are connected to the rotating member, so that multiple rotating parts can be driven by one transmission member, simplifying the structure of the driving device. In addition, the part of the transmission member connected to the rotating member and the part connected to the transmission member and the transmission shaft in the present invention can also be respectively arranged in the lateral side of the transmission member. Of course, in the present invention, by transmitting to the rotating member at the two ends of the transmission member and transmitting to the transmission shaft at the middle part of the transmission member, the stability of the driving device can be improved.

[0081] Combination Figure 2 , Figure 8 as well as Fig.11 As shown, in some embodiments of the present invention, the transmission shaft 14 may include a shaft portion 141, which may be transmission-connected with the driving member, the transmission shaft 14 may also include a first gear 142, and the transmission member 13 may include a first rack 131. The first gear 142 and the first rack 131 may mesh with each other, and the rotation of the first gear 142 may be transmitted to the first rack 131, so as to transmit the rotational motion of the transmission shaft 14 to the transmission member 13 and realize the movement of the transmission shaft 14. Among them, the shaft portion 141 may be coaxially connected with the first gear 142, and through the transmission of the gear rack, the rotational motion of the transmission shaft 14 may be conveniently converted into the movement of the transmission member 13, thereby improving the stability and transmission efficiency of power transmission.

[0082] In addition, the transmission shaft 14 of the present invention may be a hollow shaft or a solid shaft.

[0083] Alternatively, if Figure 8As shown, the transmission member 13 may further include a first stop bar 132, and the first stop bar 132 may be arranged relatively parallel to the first rack 131, and the gear teeth of the first rack 131 may be arranged on the side of the first rack 131 facing the first stop bar 132, that is, the gear teeth of the first rack 131 face the space between the first rack 131 and the first stop bar 132, and the first gear 142 is arranged between the first stop bar 132 and the first rack 131, and the first gear 142 is rotatable. During use, the first gear 142 will rotate, and since the first gear 142 is meshed with the first rack 131, the rotation of the first gear 142 will drive the first rack 131 to move, so that the first gear 142 can rotate relative to the first rack 131, and the first gear 142 can move relative to the first rack 131 along the extension direction of the first rack 131. By setting the stop bar, the first gear 142 can be limited to prevent the first gear 142 from being disengaged from the first rack 131, thereby achieving stable power transmission between the first rack 131 and the first gear 142 and improving the stability of power transmission between the transmission shaft 14 and the transmission member 13.

[0084] Optionally, the present invention can realize the transmission of multiple transmission parts through a transmission shaft 14. For example, a plurality of first gears 142 can be set on the shaft portion 141 of the present invention, and the plurality of first gears 142 can be coaxially connected to the shaft portion, and the plurality of first gears 142 can be arranged along the axial direction of the shaft portion 141, wherein the plurality of first gears can be fixedly connected to the same shaft portion, so that power is transmitted to the plurality of first gears through one shaft portion. The transmission member 13 can include a plurality of transmission members 13, and the plurality of transmission members 13 are arranged corresponding to the plurality of first gears 142. In this way, during use, the plurality of first gears 142 on the transmission shaft 14 can be used to drive different transmission members 13 respectively, and each transmission member 13 can be used to drive one or more corresponding rotating members 12. By setting the plurality of first gears 142 on the transmission shaft 14, the driving of the plurality of transmission parts can be realized, thereby achieving the purpose of driving the plurality of spray arms 20 to rotate.

[0085] The plurality of transmission members and the plurality of first gears 142 may be arranged in a one-to-one correspondence, and the number of transmission members and the number of first gears may also be different, for example, three transmission members, two first gears 142 and so on are provided.

[0086] Among them, each transmission member can be correspondingly connected to at least one rotating member, that is, each transmission member is correspondingly connected to at least one rotating member, so that multiple transmission members can be used to realize the transmission of multiple rotating members, thereby achieving the purpose of driving multiple spray arms to rotate.

[0087] The multiple first gears 142 in the present invention can be all arranged on the integral shaft portion 141, or the shaft portion 141 can be arranged to be composed of multiple shaft segments, and the first gears 142 can be arranged on at least two different shaft segments. In addition, the first gear 142 can also be integrally formed with the shaft portion 141. If multiple first gears 142 are arranged on the first shaft portion 141, at least a part of the multiple first gears 142 can be integrally formed with the first shaft portion 141. Of course, the transmission shaft 14 in the present invention can also be arranged in other forms. The above description of the present invention is only some specific embodiments of the present invention, and is not intended to limit the scope of protection of the present invention. The transmission shaft 14 structure of an embodiment of the present invention is described below with reference to the accompanying drawings.

[0088] like Fig. 20 One end of the shaft 141 can be connected to the driving member 15, and the other end of the shaft 141 can be provided with a first gear 142, and the first gear 142 can be provided separately from the shaft 141, and the first gear 142 is connected to the shaft 141, and the first gear 142 and the shaft 141 are relatively fixed in the circumferential direction of the shaft 141, or in other words, the first gear is provided separately from the shaft, and the first gear is fixedly connected to the shaft. In other words, the first gear 142 and the shaft 141 are formed separately and connected together, and the first gear 142 can be driven to rotate by the shaft 141. Among them, by forming the first gear 142 and the shaft 141 separately, the structure of the shaft 141 is simplified and the forming efficiency of the shaft 141 is improved. Moreover, in the actual use of the transmission shaft 14, the manufacturing and installation accuracy of various parts on the shaft 141 will be superimposed. Since one end of the shaft 141 is connected to the driving member 15, in order to ensure the stability of the connection between the shaft 141 and the driving member 15, it is necessary to ensure the matching accuracy of the shaft 141 and the driving member 15. Therefore, the manufacturing accuracy of the shaft 141 and the matching accuracy of the shaft 141 and the first gear 142 will be superimposed on the other end of the shaft 141. Therefore, in the present invention, the first gear 142 at the other end of the shaft 141 is separated from the shaft 141 and installed together, which can facilitate the installation of the transmission shaft 14, improve the installation efficiency of the transmission shaft 14, and avoid the transmission shaft 14 being unable to be installed in place or difficult to install due to reasons of manufacturing and assembly accuracy.

[0089] Among them, the other end of the shaft 141 can be set to a non-circular column (for example, the cross-section is D-shaped, arched, plum blossom-shaped, etc.), and a hole of corresponding structure and size can be set on the first gear 142 at the other end of the shaft 141. The shaft 141 cooperates with the shaft hole of the first gear 142 to achieve a stable connection between the shaft 141 and the first gear 142, and the first gear 142 can be easily driven to rotate by the shaft 141. In addition, the shaft 141 and the first gear 142 can be set to an interference fit or the like to achieve a stable connection between the shaft 141 and the first gear 142.

[0090] Optionally, the driving member in the present invention can be arranged on the base body, so as to facilitate the integration of the driving device, simplify the driving member, and facilitate the installation of the driving member. In addition, the driving member can also be installed on other structures, which can also realize the driving of the transmission shaft. For example, in a dishwasher with the driving device, the driving member can be installed in the inner tank, outer shell or other positions of the dishwasher.

[0091] In addition, the transmission shaft 14 in the present invention is installed on the seat body 11 , and for this purpose, a corresponding installation structure is provided on the seat body 11 in the present invention.

[0092] like Figure 6 In some embodiments of the present invention, a positioning groove 1101 may be provided on the seat body 11, and the positioning groove 1101 may extend in the same direction as the transmission shaft 14. The transmission shaft 14 may be embedded in the positioning groove 1101, and the transmission shaft 14 may rotate. Thus, the transmission shaft 14 may be stably mounted on the seat body 11, and the stable rotation of the transmission shaft 14 may be facilitated, so as to transmit the power of the driving member 15 to the transmission member 13. In addition, the thickness of the driving device may be further reduced.

[0093] Optionally, combined Figure 4 and Figure 6 The seat body 11 includes a bottom plate 111, a first rib 112 and a second rib 113. The first rib 112 is connected to the bottom plate 111, and the second rib 113 is connected to the bottom plate 111. The first rib 112 and the second rib 113 are arranged opposite to each other, and there is a gap between the first rib 112 and the second rib 113, so that a positioning groove 1101 is constructed between the first rib 112 and the second rib 113. Of course, in the present invention, a recessed structure can also be provided on the bottom plate 111, so that the positioning groove 1101 is constructed by the recessed structure. In addition, the transmission shaft 14 in the present invention can be arranged to be partially embedded in the positioning groove 1101, or the entire transmission shaft 14 can be embedded in the positioning groove 1101, that is, the transmission shaft 14 protrudes from the positioning groove 1101.

[0094] In order to further improve the stability of the transmission shaft 14, a buckle structure 114 can be provided on the base 11 to position the transmission shaft 14. For example, the buckle structure 114 is provided on the base 11, and the transmission shaft 14 is rotatably clamped on the buckle structure 114, so as to achieve the positioning of the transmission shaft 14. In addition, the buckle structure 114 can be provided on the base 11, and the annular groove 1401 can be provided on the transmission shaft 14. The positioning of the transmission shaft 14 is achieved by the buckling of the buckle structure 114 and the annular groove 1401. Of course, in the present invention, the buckle structure 114 can also be combined with the positioning groove 1101 to further improve the installation efficiency and stability of the transmission shaft 14.

[0095] In the present invention, a first convex ring and a second convex ring may be provided on the outer circumferential surface of the transmission shaft 14 . The first convex ring and the second convex ring are spaced apart along the extending direction of the transmission shaft 14 and define an annular groove.

[0096] Combination Figure 4 and Figure 6 In some embodiments of the present invention, a buckle structure 114 may be provided in the positioning groove 1101, and an annular groove 1401 may be provided on the circumference of the transmission shaft 14, and the annular groove 1401 may be engaged with the buckle structure 114 to position the transmission shaft 14 and enable the transmission shaft 14 to rotate. The buckle structure 114 in the present invention may be provided in an annular shape with an opening, and the opening size of the buckle structure 114 is smaller than the maximum radial size in the buckle structure 114, so that a shape with a small opening size is formed in the buckle structure 114, and a shape with a gradually increasing width size from the opening of the buckle structure 114 to the inside is formed, so that the transmission shaft 14 can be stably mounted on the seat body 11. In addition, the shape and size of the snap structure 114 in the present invention can be comparable to the shape and size of the inner bottom surface of the annular groove 1401, and the width size of the snap mechanism can also be set to a form comparable to the width size of the annular groove 1401. For example, the snap structure 114 can be transitionally matched with the annular groove 1401 along the width direction, so that the snap structure 114 can achieve axial positioning of the drive shaft 14, effectively improving the stability of the fit between the drive shaft 14 and the transmission member 13.

[0097] In addition, as mentioned above, the seat body 11 of the present invention is provided with a positioning groove 1101. In order to facilitate the installation of the transmission shaft 14, one side of the positioning groove 1101 is open, and the opposite sides of the positioning groove 1101 have the ability of elastic deformation to facilitate the installation of the transmission shaft 14. However, the elastic deformation ability of the opposite sides of the positioning groove 1101 will affect the stability of the operation of the transmission shaft 14. For this reason, the present invention is provided with a fixing member 17 on the seat body 11, through which the open side of the positioning groove 1101 can be closed to achieve stable installation of the transmission shaft 14. Specifically, in some embodiments of the present invention, the seat body 11 can be provided with a fixing member 17, the fixing member 17 can be connected to the seat body 11, and the fixing member 17 is configured to close the positioning groove 1101.

[0098] In addition, in combination with the above-mentioned embodiment, the positioning groove 1101 can be formed by the first rib 112 and the second rib 113 which are arranged opposite to each other. Figures 4 to 14 The fixing member 17 in the present invention may include a baffle 171, a first flange 172, and a second flange 173, wherein the first flange 172 and the second flange 173 may be connected to the edges of the baffle 171 on opposite sides, so that the fixing member 17 forms a structure with a substantially C-shaped or U-shaped cross section. Specifically, the baffle 171 may cover the positioning groove 1101, the first flange 172 may be arranged on the outside of the first rib 112 and the second rib 113, and the second flange 173 may be arranged on the outside of the first rib 112 and the second rib 113, for example, the first flange 172 is arranged on the side of the first rib 112 away from the second rib 113, and the second flange 173 is arranged on the side of the second rib 113 away from the first rib 112, so that the positioning groove 1101 is covered by the fixing member 17.

[0099] In addition, a first snap-in portion 1102 is provided on the outer surface of the first rib 112, and a first snap-in portion 1102 is also provided on the outer surface of the second rib 113. In addition, a second snap-in portion 175 is provided on the first flange 172, and a second snap-in portion 175 is also provided on the second flange 173. In this way, when the fixing member 17 is buckled on the positioning groove 1101, the second snap-in portion 175 on the first flange 172 can be buckled with the first snap-in portion 1102 on the first rib 112, and the second snap-in portion 175 on the second flange 173 can also be buckled with the second snap-in portion 175 on the second rib 113, thereby achieving stable installation of the fixing member 17 and the seat body 11.

[0100] In addition, in order to further improve the assembly efficiency of the fixing member 17 and the seat body 11, in the present invention, a spring sheet 174 structure can be arranged on the seat body 11 and / or the fixing member 17, and a first buckle portion 1102 or a second buckle portion 175 can be arranged on the spring sheet 174, so that in the process of installing the fixing member 17, the spring sheet 174 can have the ability of elastic deformation, so as to facilitate the rapid installation of the fixing member 17, and when it is necessary to disassemble, the deformation ability of the spring sheet 174 can also improve the convenience of disassembly of the fixing member 17, thereby facilitating the maintenance of the driving device. As mentioned above, the spring sheet 174 in the present invention can be arranged on the seat body 11 or on the fixing member 17. In combination with the above-mentioned embodiment, when the spring sheet 174 is arranged on the seat body 11, the spring sheet 174 can be arranged on the first rib 112 and / or the second rib 113, and the first buckle portion 1102 is arranged on the spring sheet 174. Of course, the spring sheet 174 can also be arranged on both the fixing member 17 and the seat body 11. In addition, the present invention also provides a specific implementation manner.

[0101] In combination with the above-mentioned embodiment, the first flange 172 includes a spring sheet 174 , and the second flange 173 also includes a spring sheet 174 . A second buckle portion 175 may be provided on the spring sheet 174 .

[0102] In addition, one of the first buckle part 1102 and the second buckle part 175 in the present invention includes a buckle hole and the other includes a buckle convex, and the buckle convex is correspondingly engaged with the buckle hole. For example, the first buckle part 1102 includes a buckle hole, the second buckle part 175 includes a buckle convex, and the buckle convex is correspondingly engaged with the buckle hole; for another example, the first buckle part 1102 includes a buckle convex, the second buckle part 175 includes a buckle hole, and the buckle convex is correspondingly engaged with the buckle hole; for another example, the first buckle part 1102 includes a buckle convex and a buckle hole, the second buckle part 175 includes a buckle convex and a buckle hole, the buckle convex in the first buckle part 1102 is correspondingly engaged with the buckle hole in the second buckle part 175, and the buckle hole in the first buckle part 1102 is correspondingly engaged with the buckle convex in the second buckle part 175.

[0103] In addition, in combination with the above-mentioned embodiment, the first flange 172 and the second flange 173 of the present invention can also be embedded in the inner side of the first and second ribs 113. The fixing member 17 and the seat body 11 can also be positioned by other positioning structures to achieve stable positioning of the transmission shaft.

[0104] In the present invention, the transmission member 13 and the rotating member 12 may also adopt a gear rack transmission form.

[0105] Combination Figure 3 , Figure 4 , Figure 5 , Figure 7 as well as Fig. 9In some embodiments of the present invention, the rotating member 12 may include a second gear 121, and the transmission member 13 may include a second rack 133. The second gear 121 and the second rack 133 may mesh with each other, and the rotation of the second rack 133 may be transmitted to the second gear 121, so as to transmit the movement of the transmission member 13 to the rotating member 12 and realize the rotation of the rotating member 12. Among them, through the transmission of the gear rack, the movement of the transmission member 13 can be easily converted into the rotation of the rotating member 12, thereby improving the stability and transmission efficiency of power transmission.

[0106] Optionally, the transmission member 13 may further include a second stop bar 134, which may be arranged relatively parallel to the second rack 133, and the gear teeth of the second rack 133 may be arranged on the side of the second rack 133 facing the second stop bar 134, that is, the gear teeth of the second rack 133 face the space between the second rack 133 and the second stop bar 134, and the second gear 121 is arranged between the second stop bar 134 and the second rack 133, and the second gear 121 is movable and rotatable. During use, the second rack 133 will move, and since the second gear 121 is meshed with the second rack 133, the movement of the second rack 133 will drive the second gear 121 to rotate, so that the second gear 121 can rotate relative to the second rack 133, and the second gear 121 can move relative to the second rack 133 along the extension direction of the second rack 133. By setting a stop bar, the second gear 121 can be limited to prevent the second gear 121 from being disengaged from the second rack 133, thereby achieving stable transmission of power between the second rack 133 and the second gear 121 and improving the stability of power transmission between the transmission member 13 and the rotating member 12.

[0107] Optionally, combined Figures 15 to 20 The present invention can realize the transmission of multiple rotating members 12 through a transmission member 13. For example, the transmission member 13 of the present invention includes multiple second racks 133, and the multiple second racks 133 are arranged corresponding to the multiple second gears 121. In this way, during use, the multiple second racks 133 on the transmission member 13 can be used to drive different rotating members 12 respectively, and each second rack 133 can be used to drive one or more rotating members 12. By setting the multiple second racks 133 on the transmission member 13, the driving of multiple rotating members 12 can be realized, and then the purpose of driving the multiple spray arms 20 to rotate can be achieved.

[0108] Among them, the multiple second racks 133 in the present invention can be set as an integrated structure, or the transmission member 13 can be set to be spliced ​​from multiple parts. The multiple second racks 133 in the present invention can be set in a form of being parallel to each other, with overlapping extension directions and having an angle with each other, and the structure and shape of the transmission member 13 can be set according to different driving requirements. Of course, the transmission member 13 in the present invention can also be set in other forms. The above description of the present invention is only some specific embodiments of the present invention, and is not a limitation on the protection scope of the present invention. The following describes the transmission shaft 14 structure of an embodiment of the present invention with reference to the accompanying drawings.

[0109] In combination with the above-mentioned embodiment, the transmission member 13 includes a first rack 131 and a second rack 133. The first rack 131 is used to receive the power of the transmission shaft 14, and the second rack 133 is used to output the power to the rotating member 12, so that stable power output can be achieved through the transmission member 13.

[0110] Optionally, the transmission member 13 may include a plurality of second racks 133 , and the plurality of second racks 133 may be respectively used to drive the rotating member 12 , so that one transmission member 13 may drive a plurality of spray arms 20 to rotate.

[0111] Combination Figure 4 and Figure 5 Optionally, a guide groove 1103 may be provided on the seat body 11, and the transmission member 13 may be embedded in the guide groove 1103, and the transmission member 13 may be movable along the extension direction of the guide groove 1103. Thus, the transmission member 13 may be stably mounted on the seat body 11, and the transmission member 13 may stably transmit rotation, so as to transmit the power of the driving member 15 to the rotating member 12. In addition, the thickness of the driving device may be further reduced.

[0112] Optionally, support blocks 1104 may be provided on both opposite sides of the guide groove 1103, and the support blocks 1104 may be used to support the movement of the transmission member 13. In this way, the surface contact between the transmission member 13 and the guide groove 1103 is converted into point contact between the transmission member 13 and the support blocks 1104, or in other words, the contact area between the transmission member 13 and the guide groove 1103 is reduced, thereby reducing the problem of the large contact area affecting the movement of the transmission member 13, and the guide groove 1103 may also have a certain limiting effect, thereby further improving the stability of the movement of the transmission member 13.

[0113] Optionally, the transmission member 13 is constructed as an integrated structure. As mentioned above, the transmission member 13 includes a first part that is transmission-connected to the transmission shaft and a second part that is transmission-connected to the rotating member 12, and the first part and the second part in the present application can be inherited together, thereby effectively improving the structural strength of the transmission member 13 and facilitating the stable transmission of power.

[0114] The first part can be integrally formed with the second part, or the first part can be separately formed and then installed together with the second part. As mentioned above, the second part can include multiple parts, for example, one or more second parts are connected to the opposite ends of the extension direction of the first part; multiple second parts can also be connected in sequence at one end of the extension direction of the first part. In combination with the above embodiment, the first part can be the first rack 131, and the second part can be the second rack 133.

[0115] Optionally, in combination with the above description, the transmission member may include a first rack and a second rack, the first rack is transmitted to the transmission shaft, the transmission shaft may include a first gear, the first rack may mesh with the first gear, and the first rack and the transmission shaft are transmitted by meshing. The second rack is transmitted to the rotating member, the rotating member may include a second gear, the second rack may mesh with the second gear, and the second rack and the second gear are transmitted by meshing. The first rack and the second rack may both extend in the lateral direction.

[0116] In addition, the gear teeth of the first rack and the gear teeth of the second rack can be perpendicular to each other. The transmission shaft can extend vertically, and the first gear is coaxially connected to the transmission shaft, so the gear teeth of the first rack can be in a shape extending vertically; the rotation center axis of the rotating member can extend longitudinally, and the second gear is meshed with the second rack, so the gear teeth of the second rack can be in a form extending longitudinally, so that the gear teeth of the second rack are perpendicular to the gear teeth of the first rack.

[0117] Optionally, two ends of the first rack are respectively connected to a second rack, and each second rack is meshed with at least one second gear.

[0118] In addition, the seat body 11 of the present invention is provided with a support rod 1105, and the rotating member 12 is rotatably supported on the support rod 1105. Thereby, effective positioning of the rotating member 12 is achieved. Specifically, one end of the support rod 1105 in the present invention is fixedly connected to the bottom plate 111 on the seat body 11, and a reinforcing structure can be provided at one end of the fixed rod connected to the bottom plate 111, for example, reinforcing ribs are connected between the fixed rod and the bottom plate 111, and one end of the fixed rod is thickened and connected to the bottom plate 111 to achieve a stable connection between the fixed rod and the bottom plate 111, and the other end of the fixed rod can be set to a shape with gradually decreasing size, that is, the other end of the fixed rod is set to a pointed shape. A matching groove is correspondingly provided on the rotating member 12, which can facilitate the stable and rapid matching of the fixed rod and the matching groove, and achieve stable installation of the rotating member 12.

[0119] In addition, a connecting structure can be provided on the other side of the rotating member 12, which is used to connect the spray arm 20. The connecting structure can be provided in a non-circular rod shape, and a structure corresponding to the non-circular rod is provided on the end face of the spray arm 20, thereby achieving a stable connection between the rotating member 12 and the spray arm 20 and improving the power transmission effect of the rotating member 12 on the spray arm 20.

[0120] In addition, the driving device in the present invention is used to connect and drive the spray arm 20. For this purpose, water needs to be supplied to the spray arm 20. Therefore, the driving device in the present invention may also include a water supply mechanism. For example, in some embodiments of the present invention, the driving device also includes a water distribution member 16, which is connected to the seat body 11 and is configured to supply water to the spray arm 20. By supplying water to the spray arm 20 through the water distribution member 16, water can be sprayed from the spray arm 20 for easy cleaning.

[0121] Optionally, combined Fig.12 and Fig. 20 The water distribution part 16 may include a sleeve 161 suitable for sleeve-connecting the spray arm 20, and a boss 162 may be provided on the peripheral wall of the sleeve 161. The boss 162 may be provided along the circumference of the sleeve 161, and the boss 162 is used to support the spray arm 20. The boss 162 may be provided in an annular shape so that the boss 162 can support the outer peripheral surface of the spray arm 20; in addition, the boss 162 may also be provided in a plurality of spaces arranged along the circumference of the sleeve 161, which can also support the spray arm 20. In addition, a water hole is provided on the peripheral wall of the sleeve 161. In this way, water can enter the space between the spray arm 20 and the sleeve 161 through the water hole on the peripheral wall of the sleeve 161. In addition, a corresponding hole may be provided on the peripheral wall of the end of the spray arm 20, so that the water in the space between the spray arm 20 and the sleeve 161 will enter the spray arm 20, thereby realizing water supply to the spray arm 20.

[0122] Of course, the water distribution component 16 in the present invention can also be arranged in other forms, for example, in a form in which water enters along the axial direction of the spray arm 20. In addition, the shaft sleeve 161 and the spray arm 20 in the present invention can be coaxially arranged, and the spray arm 20 can also be eccentrically arranged with the shaft sleeve 161.

[0123] It should also be noted that the water distribution member 16 and the rotating member 12 in the present invention can be connected to the same end of the spray arm 20, so as to achieve connection with the same end of the spray arm 20 through the driving device, realize water intake and drive of the spray arm 20, simplify the structure of the driving device, and simplify the connection structure between the driving device and the spray arm 20.

[0124] In addition, the present invention further provides a spray arm assembly 100, which may include the aforementioned driving device.

[0125] Specifically, combined Figures 1 to 20 The spray arm assembly 100 according to the embodiment of the present invention may include a driving device and a spray arm 20 . The driving device may be the aforementioned driving device for the spray arm 20 . The spray arm 20 may be coaxially connected to the rotating member 12 .

[0126] According to the spray arm assembly 100 of the embodiment of the present invention, directional or range-specific flushing can be achieved through the driving action of the driving member 15. Moreover, in the process of power transmission, a transmission method of rotation → movement → rotation is adopted, which can facilitate the arrangement of various components, reduce the requirements for the positional relationship between the various components, and improve the application range and applicability of the driving device.

[0127] As mentioned above, the driving device also includes a water distribution component, through which water is supplied to the spray arm, wherein one end of the spray arm is transmission-connected to the rotating member, and the end of the spray arm cooperates with the water distribution component to be suitable for water supply by the water distribution component.

[0128] In addition, the present invention also provides a seat body, which is suitable for the aforementioned driving device for the spray arm.

[0129] The seat body may be provided with a guide groove, which may extend in a lateral direction, and the guide groove may be configured to accommodate a transmission member, and the guide groove may also be configured to guide the transmission member to move in a lateral direction. Figure 4 and Figure 5 The seat body 11 may be provided with a guide groove 1103, in which the transmission member 13 is suitable for being embedded, and the guide groove 1103 is suitable for the transmission member 13 to move along. Thus, the transmission member 13 can be stably mounted on the seat body 11, and the transmission member 13 can stably transmit the rotation, so as to transmit the power of the driving member 15 to the rotating member 12. In addition, the thickness of the driving device can be further reduced.

[0130] Optionally, one guide groove or a plurality of guide grooves may be provided on the seat body. When a plurality of guide grooves are provided on the seat body, the plurality of guide grooves may be arranged on the seat body in a vertically spaced manner.

[0131] Optionally, a positioning groove may be further provided on the seat body, the positioning groove may extend vertically, the guide groove and the positioning groove may cross and communicate with each other, the positioning groove may be configured to accommodate the transmission shaft, and the positioning groove is suitable for the rotation of the transmission shaft.

[0132] Among them, in the driving device with the seat body, the positioning groove 1101 can extend in the same direction as the transmission shaft 14, the transmission shaft 14 can be embedded in the positioning groove 1101, and the transmission shaft 14 can rotate. Therefore, the transmission shaft 14 can be stably installed on the seat body 11, and the stable rotation of the transmission shaft 14 can be facilitated, so as to transmit the power of the driving member 15 to the transmission member 13. In addition, the thickness of the driving device can be further reduced.

[0133] Optionally, the seat body includes a bottom plate and a first rib and a second rib arranged on the bottom plate, wherein the first rib and the second rib extend vertically and are spaced apart in a horizontal direction to form a positioning groove. Figure 4 and Figure 6 The seat body 11 includes a bottom plate 111, a first rib 112 and a second rib 113. The first rib 112 is connected to the bottom plate 111, and the second rib 113 is connected to the bottom plate 111. The first rib 112 and the second rib 113 are arranged opposite to each other, and there is a gap between the first rib 112 and the second rib 113, so that a positioning groove 1101 is constructed between the first rib 112 and the second rib 113. Of course, in the present invention, a recessed structure can also be provided on the bottom plate 111, so that the positioning groove 1101 is constructed by the recessed structure. In addition, the transmission shaft 14 in the present invention can be arranged to be partially embedded in the positioning groove 1101, or the entire transmission shaft 14 can be embedded in the positioning groove 1101, that is, the transmission shaft 14 protrudes from the positioning groove 1101.

[0134] In addition, the seat body may further include a third rib and a fourth rib, which extend in the transverse direction and are spaced apart in the vertical direction to form a guide groove. In conjunction with the accompanying drawings, the seat body 11 may further include a third rib and a fourth rib, which extend in the left-right direction and are spaced apart in the up-down direction, and a guide groove 1103 is defined between the third rib and the fourth rib.

[0135] Optionally, a support block 1104 is provided on the inner side of the third rib and the fourth rib, and a support rod 1105 is also provided on the bottom plate 111, the support rod 1105 is provided in the guide groove 1103, and the support rod 1105 is located between the third rib and the fourth rib, wherein the positioning groove 1101 is connected to the guide groove 1103, the third rib and the fourth rib are provided on the front surface of the bottom plate 111, and a mounting plate is provided on the top of the seat body 11, and the mounting plate is connected to the bottom plate 111 and extends backward. Side plates can be provided on the left and right edges of the bottom plate 111.

[0136] Optionally, the positioning groove is arranged at the middle part of the upper side of the seat body in the horizontal direction, thereby improving the driving stability of the driving device using the seat body.

[0137] In addition, the present invention also provides a dishwasher, which may also include the aforementioned driving device.

[0138] The dishwasher according to the embodiment of the present invention comprises a body and a driving device. A washing chamber is arranged in the body. The driving device is the aforementioned driving device for the spray arm 20 .

[0139] In addition, the seat 11 of the present invention can be arranged on the back plate of the machine body, or the seat 11 and the back plate of the machine body can be integrated together. Of course, the driving device of the present invention can also be arranged on the side wall, bottom wall, top wall or door of the dishwasher.

[0140] In addition, the dishwasher of the present invention further comprises a spray arm 20, one end of the spray arm 20 is connected to the driving device, and the other end of the spray arm 20 is in a cantilevered form or supported on the body. In addition, the dishwasher of the present invention may not directly comprise the spray arm 20, that is, the spray arm 20 is arranged in a detachable or replaceable form as an accessory of the dishwasher.

[0141] Optionally, the seat body may be provided with a plurality of transmission members, which are arranged at intervals along the vertical direction on the seat body, and the transmission shafts may include a plurality of transmission members, wherein the plurality of transmission shafts may be driven by the same motor, or may be driven by different motors, and the plurality of transmission shafts are correspondingly transmission-connected with the plurality of transmission members, and each transmission member is transmission-connected with at least one rotating member. In this way, the plurality of transmission members may be connected by a plurality of transmission shafts, and the plurality of transmission members may be driven to move by the plurality of transmission shafts. In addition, each transmission member may be transmission-connected with at least one rotating member, and therefore, the plurality of rotating members may be rotated by a plurality of transmission shafts, thereby driving the plurality of spray arms.

[0142] The multiple transmission shafts and the multiple transmission members may be connected in a one-to-one transmission manner, and the number of the multiple transmission shafts and the multiple transmission members may be different, for example, three transmission members, two transmission shafts, etc. When there are multiple transmission shafts, each of the multiple transmission shafts may be used to drive one or more transmission members.

[0143] Optionally, in the present invention, a plurality of transmission members can be connected by a transmission shaft, so that the plurality of transmission members can be transmitted by a transmission shaft, that is, the power of the driving member is transmitted to the plurality of transmission members by a transmission shaft. A plurality of transmission members can be provided on the base body, and the plurality of transmission members are arranged vertically at intervals on the base body, a transmission shaft is transmission-connected to the plurality of transmission members, and each transmission member is transmission-connected to at least one rotating member. In this way, a plurality of transmission members can be connected by a transmission shaft, so that the plurality of transmission members can be driven to move by a transmission shaft. In addition, each transmission member can be transmission-connected to at least one rotating member, so that the rotation of the plurality of rotating members can be realized by a transmission shaft, and then the driving of the plurality of spray arms can be realized, thereby simplifying the structure of the driving device.

[0144] Optionally, the dishwasher further comprises a spray arm, which is suitable for being connected to the rotating member, and the spray arm extends coaxially with a rotation center axis of the rotating member.

[0145] Optionally, the driving member is arranged at one end of the seat body in the vertical direction, thereby reducing the influence of the driving member on the washing chamber and improving space utilization.

[0146] Some specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0147] like Figures 1 to 14 In another embodiment of the present invention, the transmission shaft 14 passes through the first rack 131 (i.e., between the first rack 131 and the first stop bar 132), and then is installed together in a fixed position on the seat body 11. After the driving member 15 (such as a motor) is installed in the transmission shaft 14, it is screwed and fixed on the seat body 11. The fixing member 17 is snapped into the seat body 11 to fix the transmission shaft 14. Then, the second gear 121 and the water distribution member 16 are installed in sequence. The sealing ring needs to be installed on the water distribution member 16 in advance. Each water distribution member 16 is fixed on the seat body 11 with two screws. The spray arm 20 passes through the water distribution member 16 and docks with the second gear 121. One end of the spray arm 20 is fixed on the inner tank, and the other end of the spray arm 20 cooperates with the second gear 121 through a semicircular "D"-shaped structure. The water distribution member 16 supplies water to the spray arm 20. Specifically, the transmission scheme is that the driving member 15 drives the transmission shaft 14 to rotate, the transmission shaft 14 drives the first rack 131 to move, the second rack 133 drives the second gear 121 to rotate, and finally the second gear 121 drives the spray arm 20 to rotate. The spray arms 20 on the left and right sides can rotate synchronously in the same direction. The material of the transmission shaft 14, the transmission member 13 and the rotating member 12 can be metal or plastic.

[0148] like Figures 15 to 20In one embodiment of the present invention, the transmission shaft 14 passes through the first rack 131 (i.e., between the first rack 131 and the first stop bar 132), and then is installed together with the seat body 11 in a fixed position, and the driving member 15 is installed in the transmission shaft 14 The screws are then fixed on the seat body 11, and the fixing member 17 is buckled into the seat body 11 to fix the transmission shaft 14, and then the second gear 121 and the water distribution member 16 are installed in sequence. The sealing ring needs to be installed on the water distribution member 16 in advance. Each water distribution member 16 is fixed on the seat body 11 with two screws. The spray arm 20 passes through the water distribution member 16 and docks with the second gear 121. The top spray arm 20 and the lower spray arm 20 are fixed on the inner tank. The middle spray arm 20 is divided into two sections, and the rear end of the middle spray arm 20 can be fixed on the bowl basket. The specific transmission scheme is that the driving member 15 drives the transmission shaft 14 to rotate, the transmission shaft 14 drives the first rack 131 to move, the second rack 133 drives the second gear 121 to rotate, and finally the second gear 121 drives the spray arm 20 to rotate. The material of the transmission shaft 14, the transmission member 13 and the rotating member 12 can be metal or plastic. This scheme can choose two-layer or three-layer control, and each layer is a gear rack transmission scheme.

[0149] The present invention can realize precise control of the spray arm 20 (especially the slender spray arm 20), arbitrary position control, regional washing and fixed-point washing, and hierarchical layout control. The present invention provides an integrated transmission control method, effectively improves the stability of the drive device, and simplifies the structure of the drive device.

[0150] like Figures 1 to 14 , describes a spray arm assembly 100 according to an embodiment of the present invention, which includes a base body 11, a rotating member 12, a transmission member 13, a transmission shaft 14, a driving member 15, a fixing member 17 and a spray arm 20.

[0151] Among them, the seat body 11 includes a bottom plate 111, a first rib 112, and a second rib 113. The bottom plate 111 can be in the shape of a flat plate. The normal of the bottom plate 111 extends in the front-to-back direction. The first rib 112 and the second rib 113 both extend in the up-down direction, and the first rib 112 and the second rib 113 are spaced apart in the left-right direction. A positioning groove 1101 is constructed between the first rib 112 and the second rib 113. The first rib 112 and the second rib 113 can be arranged at the middle position of the bottom plate 111 in the left-right direction. A first buckle portion 1102 can be arranged on the outer side surface of the first rib 112 and the second rib 113, and the first buckle is a buckle convex. The first rib 112 and the second rib 113 are arranged on the front surface of the bottom plate 111. The seat body 11 may also include a third rib and a fourth rib, the third rib and the fourth rib extend in the left-right direction, and the third rib and the fourth rib are spaced apart in the up-down direction, a guide groove 1103 is defined between the third rib and the fourth rib, a support block 1104 is provided on the inner side of the third rib and the fourth rib, a support rod 1105 is also provided on the bottom plate 111, the support rod 1105 is provided in the guide groove 1103, and the support rod 1105 is located between the third rib and the fourth rib, wherein the positioning groove 1101 is connected to the guide groove 1103, the third rib and the fourth rib are provided on the front surface of the bottom plate 111, and a mounting plate is provided on the top of the seat body 11, and the mounting plate is connected to the bottom plate 111 and extends backward. Side plates can be provided on the left and right edges of the bottom plate 111. A buckle structure 114 is provided between the first rib 112 and the second rib 113.

[0152] The rotating member 12 is rotatably sleeved on the support rod 1105, and an embedded structure is provided at the front end before rotation, and the embedded structure is used to connect the spray arm 20. The embedded structure can be set in a non-circular rod shape, such as a D-shaped rod shape. The rotating member 12 includes a second gear 121, and the axis of the second gear 121 extends along the front-to-back direction.

[0153] The transmission member 13 extends in the left-right direction, is movably disposed in the guide groove 1103 in the left-right direction, and is supported by the support block 1104. The transmission member 13 includes a first rack 131, a second rack 133, a first stop bar 132, and a second stop bar 134. The first rack 131, the second rack 133, the first stop bar 132, and the second stop bar 134 all extend in the left-right direction. The first rack 131 and the first stop bar 132 are spaced apart from each other in the front and back directions, and the gear teeth of the first rack 131 face the first stop bar 132. The second rack 133 and the second stop bar 134 are spaced apart from each other in the up-down direction. The left and right ends of the first rack 131 and the first stop bar 132 are connected, and the left and right ends of the second rack 133 and the second stop bar 134 are connected. The left and right sides of the first rack 131 are both connected to the second rack 133. The second gear 121 is disposed between the second rack 133 and the second stopping bar 134 , and the second gear 121 and the second rack 133 are meshed with each other.

[0154] The transmission shaft 14 extends in the up and down directions, and an annular groove 1401 is provided on the circumferential surface of the transmission shaft 14. The transmission shaft 14 is embedded in the positioning groove 1101, and the transmission shaft 14 is rotatable. The snap-fit ​​structure 114 snaps into the annular groove 1401 to position the transmission shaft 14. A first gear 142 is coaxially connected to the transmission shaft 14, and the first gear 142 is arranged in the guide groove 1103. The first gear 142 extends between the first rack 131 and the first stop bar 132, and the first gear 142 is meshed with the first rack 131.

[0155] The driving member 15 is connected to the upper end of the seat body 11 . In combination with the above, the driving member 15 is installed on the mounting plate. The driving member 15 can be a motor, and the motor shaft of the motor extends in the up-down direction. The motor cooperates with the shaft hole of the transmission shaft 14 .

[0156] The fixing member 17 is installed on the seat body 11, and the fixing member 17 includes a baffle 171, a first flange 172 and a second flange 173. The baffle 171 is in a strip shape extending in the up-down direction, and the first flange 172 and the second flange 173 are respectively connected to the left and right side edges of the baffle 171, and the first flange 172 and the second flange extend in the up-down direction. The first flange 172 and the second flange 173 include a spring sheet 174, and the spring sheet 174 is provided with a second buckle portion 175, and the second buckle portion 175 can be a buckle hole. During the installation process, the first flange 172 and the second flange 173 are respectively arranged on the outside of the first rib 112 and the second rib 113, and the first buckle portion 1102 and the second buckle portion 175 are engaged. The positioning groove 1101 is covered by the fixing member 17.

[0157] The water distribution part 16 includes a sleeve 161 and a drainage pipe. The sleeve 161 extends in the front-to-back direction. An ear is provided at the rear end of the sleeve 161. The sleeve 161 is coaxially arranged with the second gear 121 and fixedly installed through the ear. The sleeve 161 is provided with a boss 162 to support the spray arm 20. The drainage pipe can be connected to the side wall of the sleeve 161, and the drainage pipe is connected to the internal space of the sleeve 161. Sealing rings can be provided on the front and rear sides of the water distribution part 16, and a closed space is constructed in the sleeve 161 through the sealing rings.

[0158] A matching hole is provided on the end surface of one end of the spray arm 20, and this end of the spray arm 20 can be inserted into the driving device, and the transmission matching between the rotating part 12 and the spray arm 20 is realized through the matching of the shaft hole. A guide cavity is provided in the spray arm 20, and a water inlet hole is provided on the peripheral wall of this end of the spray arm 20. This end of the spray arm 20 is inserted into the shaft sleeve 161 to facilitate water inlet.

[0159] During use, the driving member 15 drives the transmission shaft 14 to rotate, and drives the transmission member 13 to move in the left and right direction through the gear rack, and then drives the rotating member 12 to rotate through the gear rack, thereby driving the spray arm 20 to rotate.

[0160] like Figures 15 to 20 , shows another embodiment of the present invention, the transmission mode of this embodiment is basically connected with the transmission mode of the above-mentioned embodiment, wherein, in this embodiment, a plurality of guide grooves 1103 are arranged at intervals along the vertical direction on the seat body 11, and a transmission member 13 and a rotating member 12 and other structures are arranged corresponding to each guide groove 1103. The upper end of the transmission shaft 14 is connected to the driving member 15, and the lower end of the transmission shaft 14 is connected to a first gear 142, and the first gear 142 is connected to the shaft portion 141 of the transmission shaft 14 by means of a shaft hole.

[0161] In addition, the spray arm 20 in the present invention may include multiple sections. For example, the spray arm 20 is configured to have two ends that are detachably connected together, one part of which is installed on the bowl basket, and the other part is installed on the base 11. During the process of disassembling the bowl basket, the part of the spray arm 20 installed on the bowl basket is disassembled together with the bowl basket. Of course, in the present invention, it can also be configured that when the bowl basket is disassembled, the entire spray arm 20 is disassembled together.

[0162] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0163] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0164] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0165] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0166] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0167] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A driving device for a spray arm, characterized in that: include: seat body; A rotating member, the rotating member is rotatably disposed on the base body, and the rotating member is used to connect the spray arm; A transmission member, the transmission member is movably disposed on the base body, and the transmission member is in transmission connection with the rotating member to drive the rotating member to rotate; A transmission shaft, the transmission shaft is rotatably disposed on the base body, and the transmission shaft is in transmission connection with the transmission member to drive the transmission member to move; A driving member, the driving member is drivingly connected to the transmission shaft to drive the transmission shaft to rotate; The rotation center axis of the rotating member extends in the longitudinal direction, the transmission member is movably arranged on the base body in the transverse direction, the transmission shaft extends in the vertical direction, and the longitudinal direction, the transverse direction and the vertical direction are perpendicular to each other.

2. The driving device for the spray arm according to claim 1, characterized in that: The seat body is provided with a plurality of transmission members arranged at intervals in the vertical direction, and the transmission shaft includes a plurality of transmission shafts, the plurality of transmission shafts are correspondingly transmission-connected with the plurality of transmission members, and each of the transmission members is transmission-connected with at least one rotating member.

3. The driving device for a spray arm according to claim 1, characterized in that: The middle part of the transmission member along the transverse direction is transmission-connected to the transmission shaft, and both ends of the transmission member along the transverse direction are transmission-connected to at least one rotating member, so as to transmit power to multiple rotating members through one transmission member.

4. The driving device for a spray arm according to any one of claims 1 to 3, characterized in that: The transmission shaft includes a shaft portion and a first gear, the transmission member includes a first rack, and the first gear and the first rack are meshed with each other.

5. The driving device for the spray arm according to claim 4, characterized in that: The transmission member also includes a first stop bar, which is arranged relatively parallel to the first rack, the gear teeth of the first rack are arranged on the side of the first rack facing the first stop bar, and the first gear is rotatably arranged between the first stop bar and the first rack.

6. The driving device for a spray arm according to claim 4, characterized in that: A plurality of the first gears are coaxially connected to the shaft portion, the plurality of the first gears are arranged along the axial direction of the shaft portion, and the plurality of the first gears are fixedly connected to the same shaft portion, the transmission member includes a plurality of members corresponding to the plurality of the first gears, and each of the transmission members is correspondingly transmission-connected to at least one of the rotating members.

7. The driving device for a spray arm according to claim 6, characterized in that: One end of the shaft portion is connected to the driving member and the other end is coaxially connected to a first gear, and the first gear is separately arranged and fixedly connected to the shaft portion.

8. A driving device for a spray arm according to any one of claims 1 to 7, characterized in that: The driving component is arranged on the seat body.

9. The driving device for a spray arm according to any one of claims 1 to 3, characterized in that: The seat body is provided with a positioning groove, the positioning groove and the transmission shaft extend in the same direction, and the transmission shaft is rotatably embedded in the positioning groove.

10. The driving device for a spray arm according to claim 9, characterized in that: A buckle structure is provided in the positioning groove, and an annular groove is provided on the circumferential surface of the transmission shaft. The annular groove is buckled with the buckle structure to position the transmission shaft and enable the transmission shaft to rotate.

11. The driving device for a spray arm according to claim 9, characterized in that: The seat body is also provided with a fixing piece, which is connected to the seat body and closes the positioning groove.

12. The driving device for a spray arm according to claim 11, characterized in that: The seat body includes a bottom plate, a first rib and a second rib, the first rib and the second rib are connected to the bottom plate and arranged opposite to each other, the positioning groove is defined between the first rib and the second rib, the fixing member includes a baffle, a first flange and a second flange, the baffle covers the positioning groove, the first flange and the second flange are respectively arranged on the outside of the first rib and the second rib, the outer side surface of the first rib and the outer side surface of the second rib are both provided with a first buckle part, the first flange and the second flange both include a spring sheet, a second buckle part is provided on the spring sheet, one of the first buckle part and the second buckle part is a clamping hole and the other is a clamping convexity, and the clamping convexity is correspondingly engaged with the clamping hole.

13. The driving device for a spray arm according to any one of claims 1 to 3, characterized in that: The rotating member includes a second gear, the transmission member includes a second rack, and the second gear and the second rack are meshed with each other.

14. The driving device for a spray arm according to claim 13, characterized in that: The transmission member also includes a second stop bar, which is arranged relatively parallel to the second rack, the gear teeth of the second rack are arranged on the side of the second rack facing the second stop bar, and the second gear is rotatably arranged between the second stop bar and the second rack.

15. The driving device for a spray arm according to claim 14, characterized in that: The transmission member includes a plurality of second racks, and the plurality of second racks are respectively used to drive the rotating member, so that one transmission member drives a plurality of spray arms to rotate.

16. A driving device for a spray arm according to any one of claims 1 to 3, characterized in that: The transmission member includes a first rack and a second rack, the transmission shaft includes a first gear, and the rotating member includes a second gear. The first rack is meshed with the first gear, and the second rack is meshed with the second gear. The first rack and the second rack both extend laterally, and the teeth of the first rack and the teeth of the second rack are perpendicular to each other.

17. A driving device for a spray arm according to any one of claims 1 to 3, characterized in that: The seat body is provided with a guide groove, the transmission member is embedded in the guide groove, and the transmission member is movable along the extending direction of the guide groove.

18. The driving device for a spray arm according to claim 17, characterized in that: Support blocks are provided on two opposite sides of the guide groove, and the support blocks are used to support the movement of the transmission member.

19. A driving device for a spray arm according to any one of claims 1 to 18, characterized in that: The transmission member is constructed as an integral structure; and / or The seat body is provided with a support rod, and the rotating member is rotatably supported on the support rod.

20. A seat body, the seat body being suitable for a driving device for a spray arm according to any one of claims 1 to 17, characterized in that: The seat body is provided with a guide groove, which extends in a transverse direction and is configured to accommodate the transmission member and guide the transmission member to move in a transverse direction.

21. The seat body according to claim 20, characterized in that: The seat body is provided with a plurality of guide grooves arranged at intervals along the vertical direction, and the seat body is also provided with a positioning groove, which extends vertically, and the guide groove and the positioning groove intersect and are connected, and the positioning groove is configured to accommodate a transmission shaft and to be suitable for the rotation of the transmission shaft.

22. The seat body according to claim 21, characterized in that: The positioning groove is arranged at the middle part of the seat body in the horizontal direction.

23. The seat body according to claim 21 or 22, characterized in that: The seat body includes a base plate and first, second, third and fourth ribs arranged on the base plate, the first and second ribs extend vertically and are spaced apart in the transverse direction to construct the positioning groove, and the third and fourth ribs extend in the transverse direction and are spaced apart in the vertical direction to construct the guide groove.

24. A dishwasher, characterized in that: include: A machine body, wherein a washing chamber is provided in the machine body; A driving device, wherein the driving device is a driving device for a spray arm according to any one of claims 1-19.

25. The dishwasher according to claim 24, characterized in that The seat body is provided with a plurality of transmission members arranged at intervals in a vertical direction, and the transmission shaft includes a plurality of transmission shafts, the plurality of transmission shafts are correspondingly transmission-connected with the plurality of transmission members, and each of the transmission members is transmission-connected with at least one rotating member.

26. The dishwasher according to claim 24, characterized in that The seat body is provided with a plurality of transmission members arranged at intervals in a vertical direction, a transmission shaft is transmission-connected with the plurality of transmission members, and each of the transmission members is transmission-connected with at least one rotating member.

27. The dishwasher according to any one of claims 24 to 26, characterized in that The dishwasher also includes: A spray arm is suitable for being connected to the rotating member, and the spray arm extends coaxially with the rotation center axis of the rotating member.

28. The dishwasher according to any one of claims 24 to 26, characterized in that The seat body is arranged on the back plate of the machine body or the seat body and the back plate of the machine body are integrated together.

29. The dishwasher according to claim 28, characterized in that The driving member is arranged on one end of the seat body along the vertical direction.

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