CN109222832B

CN109222832B - Drive device and dishwasher

Info

Publication number: CN109222832B
Application number: CN201811208319.8A
Authority: CN
Inventors: 薛维军; 张薇
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2018-10-16
Filing date: 2018-10-16
Publication date: 2021-07-27
Anticipated expiration: 2038-10-16
Also published as: CN109222832A

Abstract

The invention discloses a driving device and a dish washing machine, wherein the driving device comprises an installation shell, a transmission assembly and a driving motor, wherein the transmission assembly is arranged in the installation shell, and a driving shaft of the driving motor is connected to the transmission assembly. Because the driving device provided by the application can drive the spray pipe to rotate, the washing angle of the spray pipe can be actively controlled, the cleaning dead angle is avoided, and the tableware can be thoroughly cleaned. Secondly, because driving motor sets up on the installation shell, the transmission assembly sets up in the installation shell, consequently can realize drive arrangement's modularization, and then can avoid installing the trouble of transmission assembly and driving motor respectively. Finally, the modular driving device can be conveniently installed in different installation environments, and therefore the modular driving device can be widely applied to washing equipment of sink dish washing machines, cabinet dish washing machines, table dish washing machines and the like.

Description

Drive device and dishwasher

Technical Field

The invention relates to the field of kitchen appliances, in particular to a driving device and a dish washing machine.

Background

The working process of the dishwasher is as follows: the washed tableware is put into the dish washer, the washing program is selected, the corresponding selection switch is pressed, the power supply is switched on, and the program controller starts to work. After the water reaches a certain temperature, the water is sprayed out through the water spraying holes of the spraying arms, the spraying arms rotate under the reaction force of the sprayed water and continuously spray the water onto the tableware, so that the viscosity and the adhesive force of the grease are reduced, and then the dirt is sprayed and washed cleanly. Because the spray arm of the existing dish washer is fixed on the base of the dish washer, the driving force of the spray arm is the reaction force of water spraying, so the washing angle and the washing range of the spray arm are relatively fixed, which causes that the existing dish washer has a washing dead angle and can not thoroughly wash tableware.

Disclosure of Invention

The invention mainly aims to provide a driving device, which aims to actively drive a spray pipe of a dish washing machine to rotate so as to thoroughly clean tableware.

In order to achieve the above object, the present invention provides a driving device for driving a nozzle, the driving device including: mounting a shell; the transmission assembly is arranged in the mounting shell; and the driving shaft of the driving motor is connected with the transmission assembly.

Preferably, the transmission assembly is a gear transmission assembly, the transmission assembly comprises a driving gear connected with the driving motor and a driven gear connected with the driving gear, and the driven gear is connected with the spray pipe.

Preferably, the driven gear comprises a first driven gear and a second driven gear which are engaged with two sides of the driving gear in a matching way, and the first driven gear and the second driven gear are symmetrically distributed on two sides of the driving gear.

Preferably, the first driven gear is provided with a first limit tooth, the second driven gear is provided with a second limit tooth, the first limit tooth is used for limiting the limit position of the driving gear in the anticlockwise rotation, and the second limit tooth is used for limiting the limit position of the driving gear in the clockwise rotation.

Preferably, the installation shell is including dismantling preceding shell and the backshell of connecting, preceding shell with the backshell lock forms the installation cavity, drive assembly locates in the installation cavity.

Preferably, a positioning column is convexly arranged on the inner wall surface of the front shell, which is close to the rear shell, the driving gear and the driven gear are provided with mounting holes corresponding to the positioning column, and the positioning column is in clearance fit with the mounting holes.

Preferably, the transmission assembly further comprises a connecting rod, the driven gear comprises a first driven gear and a second driven gear, and the driving gear, the first driven gear, the connecting rod and the second driven gear are sequentially in transmission connection; the spray pipe comprises a first spray pipe and a second spray pipe, the first driven gear is connected with the first spray pipe, and the second driven gear is connected with the second spray pipe.

The present invention also proposes a dishwasher, comprising: the inner container is provided with a washing cavity; the spray pipe is arranged in the washing cavity, a plurality of spray holes are formed in the spray pipe, and a first end of the spray pipe forms a transmission end; and the driving device is connected with the transmission assembly of the driving device and is used for driving the spray pipe to rotate around the axis of the spray pipe, wherein the driving device comprises:

mounting a shell; the transmission assembly is arranged in the mounting shell; and the driving shaft of the driving motor is connected with the transmission assembly.

Preferably, the transmission assembly is provided with a transmission part, the transmission end of the spray pipe is provided with a matching part, and the matching part is in transmission connection with the transmission part.

Preferably, the transmission part is a hexagonal transmission shaft fixedly arranged on the transmission assembly, the matching part is a hexagonal hole formed in the transmission end, and the hexagonal transmission shaft is inserted into the hexagonal hole in an adaptive manner.

Preferably, the outer wall of the inner container is provided with a plurality of fixing pieces, the mounting shell is provided with a connecting piece which is matched and fixed with the fixing pieces, and the connecting piece is matched and fixed with the fixing pieces.

Preferably, the fixing parts comprise a first fixing part and a second fixing part which are arranged at intervals in a first direction, and a plurality of fixing parts are arranged at intervals in a second direction; the connecting pieces comprise a first connecting piece and a second connecting piece which are arranged at intervals in a first direction, and the first connecting piece and the second connecting piece are arranged at intervals in a second direction; the first direction is perpendicular to the second direction.

Preferably, the first fixing piece is provided with a mounting groove which is arranged in a penetrating manner in the first direction; the first connecting piece is convexly provided with a guide part extending along the first direction, and the guide part is inserted into the mounting groove in an adaptive mode.

The driving device provided by the invention can actively drive the spray pipe of the cleaning equipment to rotate, so that the washing angle of the spray pipe can be actively controlled, the cleaning dead angle is avoided, and the tableware can be thoroughly cleaned. Secondly, because driving motor sets up on the installation shell, the transmission assembly sets up in the installation shell, consequently can realize drive arrangement's modularization, and then can avoid installing the trouble of transmission assembly and driving motor respectively. Finally, the modular driving device can be conveniently installed in different installation environments, and therefore the modular driving device can be widely applied to washing equipment of sink dish washing machines, cabinet dish washing machines, table dish washing machines and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a dishwasher of the present invention;

FIG. 2 is a schematic view of a water supply system of the dishwasher;

FIG. 3 is an exploded view of the drive unit and the inner container of the dishwasher;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic sectional view of the dishwasher;

FIG. 6 is a partial enlarged view of FIG. 5 at B;

FIG. 7 is an exploded view of the first embodiment of the driving device;

FIG. 8 is an exploded view of the first embodiment of the driving device from another perspective;

fig. 9 is an exploded view of the second embodiment of the driving device.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a driving device which can control the rotation angle of a spray pipe so as to improve the cleaning effect of the spray pipe.

In one embodiment of the present invention, as shown in FIG. 1, the dishwasher is a sink dishwasher that is disposed adjacent to a sink, and specifically, the sink dishwasher may be integrally formed with the sink or may be removably coupled to the sink.

Referring to fig. 1 to 5, the dishwasher provided by the present application includes an inner container 10, a spray pipe 20 and a driving device 30, wherein the spray pipe 20 is disposed in the inner container 10, a first end of the spray pipe 20 is a driving end, a second end of the spray pipe 20 is a water inlet end, and the spray pipe 20 is provided with a plurality of spray holes; the driving device 30 is in transmission connection with the driving end of the spray pipe 20, and the driving device 30 is used for driving the spray pipe 20 to rotate around the axis of the spray pipe 20.

Since the dishwasher proposed in the present application uses the spout 20 instead of the spray arm, the spout 20 is rotated about the axis to change the spray angle, thereby changing the washing range, so that at least the following two advantageous effects can be achieved. Firstly, the spray pipe 20 has a small volume and a small occupied space, so that the sink dish-washing machine has a larger accommodating space, and in addition, because the spray pipe 20 rotates around the axis thereof, the space occupied by the spray pipe 20 is equal to the actual volume thereof, so that the sink dish-washing machine can be ensured to have the larger accommodating space. Secondly, since the nozzle 20 is controlled by the driving device 30, the rotation angle of the nozzle 20 can be accurately controlled, so that the washing angle and the washing range of the nozzle 20 can be accurately controlled, the occurrence of a washing dead angle is avoided, and the tableware can be thoroughly washed.

Further, referring to fig. 1 and 2, in order to obtain different cleaning effects, in an embodiment of the present application, the inner container 10 has a plurality of washing zones, and each washing zone is correspondingly provided with a water supply system. Because different washing district intercommunication has different water supply system, consequently can set different water supply system to different washing intensity to make can realize the washing of different intensity in different washing districts.

In an embodiment of the present application, the inner container 10 includes a plurality of separated grooves, and a washing area is formed in each groove. Specifically, in this embodiment, the inner container 10 includes a first tank 11 and a second tank 12 which are arranged in a separated manner, a first washing area is formed in the first tank 11, and a second washing area is formed in the second tank 12; the water supply system includes a first water supply system 40 and a second water supply system 50, the first water supply system 40 is disposed corresponding to the first washing zone, and the second water supply system 50 is disposed corresponding to the second washing zone.

Wherein, first washing district can set up to ordinary washing district, and the second washing district can set up to powerful washing district, and water supply system is two water route systems, and the intensity of two water route systems's first water supply system 40 and second water supply system 50 is the difference setting, therefore single washing can realize strong and weak subregion for the user can make pointed references and wash the tableware of turbidity difference.

In addition, the tableware loops through the washing district that the intensity is different and also can make the washing of tableware realization different degree, specifically, treat that the washing tableware can advance to go into powerful washing district and wash, washes food waste clean, gets into ordinary washing district again and washes to thoroughly the sanitization with the greasy dirt.

However, the design of the present application is not limited thereto, and in other embodiments, the first tank 11 and the second tank 12 may be disposed in a communicating manner, so that the tableware can be conveniently transferred from the strong washing area to the general washing area.

Further, referring to fig. 3, in order to conveniently change the volume of the accommodating space of the inner container 10, in an embodiment of the present invention, the inner container 10 is provided with a movable partition plate 60, so that the inner container 10 can be divided into the first groove 11 and the second groove 12, when the partition plate 60 is installed, the partition plate 60 can divide the inner container 10 into the first groove 11 and the second groove 12, and when the partition plate 60 is detached, the first groove 11 and the second groove 12 are communicated with each other, so that tableware with a larger volume, such as cookware, large dishes, and the like, can be accommodated in the inner container 10.

Now, in the present embodiment, a sliding groove extending in the up-down direction is formed on the inner wall surface of the inner container 10, and the partition plate 60 is installed in the sliding groove in a drawable manner. Preferably, the partition 60 is provided at an upper portion thereof with a catching groove, so that the partition 60 can be easily drawn.

Further, referring to fig. 3, in order to improve the sealing performance of the partition plate 60 and prevent the partition plate 60 from leaking water, in an embodiment of the present application, a sealing wall is protruded on the bottom wall of the inner container 10 corresponding to the partition plate 60, and the bottom of the partition plate 60 is in sealing contact with the sealing wall. After the sealing wall is arranged, the position of the partition plate 60 can be raised, so that the water pressure at the joint of the partition plate 60 and the liner 10 can be reduced, the sealing performance of the partition plate 60 can be improved, and the mutual flowing of water in the first groove body 11 and the second groove body 12 is avoided.

Preferably, a groove is formed at the top of the sealing wall, and the bottom of the partition plate 60 is fittingly inserted into the groove. In this way, not only the sealing performance of the separator 60 can be further improved, but also the connection strength between the separator 60 and the inner container 10 can be improved.

Further, the installation structure of the water supply system will now be described. In this embodiment, the partition plate 60 is disposed in the middle of the inner container 10, the first water supply system 40 is disposed on the outer wall surface of the bottom wall of the first tank 11, the second water supply system 50 is disposed on the outer wall surface of the bottom wall of the second tank 12, and the first water supply system 40 and the second water supply system 50 are symmetrically disposed about the plane where the partition plate is located. Because the baffle 60 is arranged in the middle of the inner container 10, the structures of the first tank body 11 and the second tank body 12 are symmetrical, and the structures of the first water supply system 40 and the second water supply system 50 are close and have the same weight, so that the first water supply system 40 is arranged on the bottom wall surface of the first tank body 11, the second water supply system 50 is arranged on the bottom wall surface of the second tank body 12, and the structure of the dish-washing machine is symmetrical and stable.

Further, referring to fig. 2, in order to make the structure of the dishwasher more stable, in an embodiment of the present application, the water softener and the motor pump of the water supply system are disposed on a diagonal line of the bottom wall of the tub body, and the water cup assembly of the water supply system is located between the water softener and the motor pump. Specifically, the first water supply system 40 includes a first water softener 41, a first water cup assembly, a first motor pump 42, a first water supply pipe 43 and a first connection pipe communicating the first water softener 41, the first water cup assembly and the first motor pump 42, which are connected in sequence; the first motor pump 42 and the first water softener 41 are disposed on the diagonal line of the bottom wall of the first tank 11; and/or

The second water supply system 50 comprises a second water softener 51, a second water cup assembly, a second motor pump 52, a second water supply pipe 53 and a second connecting pipe for communicating the second water softener 51, the second water cup assembly and the second motor pump 52, which are connected in sequence; the second motor pump 52 and the second water softener 51 are disposed on the diagonal line of the bottom wall of the second tank body 12.

Further, referring to fig. 2, in order to make the arrangement of the first water supply system 40 and the second water supply system 50 more compact, in an embodiment of the present application, the first water supply system 40 and the second water supply system 50 are distributed in a staggered manner. Specifically, the first water softener 41 is extended toward the second water supply system 50; and/or the second motor pump 52 is extended toward the first water supply system 40.

Preferably, the water supply system further includes a pressure maintaining pipe communicating the motor pump and the water supply pipe, and the pressure maintaining pipe has a diameter larger than that of the water supply pipe, so that the water pressure of the water supply pipe can be more stabilized.

Referring to fig. 3 to 8, the driving device 30 of the dishwasher will now be described, the driving device 30 is used for driving the spray pipe 20 to rotate around its axis, and the driving device 30 includes a mounting housing 100, a transmission assembly 200 and a driving motor 300, wherein the transmission assembly 200 is disposed in the mounting housing 100, the driving motor 300 is disposed on the mounting housing 100, and a driving shaft of the driving motor 300 is connected to the transmission assembly 200.

Firstly, since the driving device 30 provided by the present application can drive the nozzle 20 to rotate, the washing angle of the nozzle 20 can be actively controlled, thereby avoiding the occurrence of a dead angle during washing, and enabling the tableware to be thoroughly washed. Secondly, since the driving motor 300 is disposed on the mounting case 100 and the driving assembly 200 is disposed in the mounting case 100, the driving device 30 can be modularized, and thus, the trouble of separately mounting the driving assembly 200 and the driving motor 300 can be avoided. Finally, the modular drive unit 30 can be easily installed in different installation environments, and thus can be widely applied to sink dish washing machines, cabinet dish washing machines, table dish washing machines, and other types of products.

It should be emphasized here that the driving device proposed in the present application can be widely applied not only to various dish washers, but also to cleaning devices of fruit and vegetable machines, medical devices, and the like.

Further, in an embodiment of the present application, the transmission assembly 200 includes a driving gear 210 connected to the driving motor 300 and a driven gear connected to the driving gear 210.

As a preferable mode, in this embodiment, the transmission assembly 200 is a gear transmission assembly, the driven gear includes a first driven gear 221 and a second driven gear 222 engaged with two sides of the driving gear 210, the first driven gear 221 and the second driven gear 222 are symmetrically distributed on two sides of the driving gear 210, the nozzle 20 includes a first nozzle and a second nozzle, the first driven gear 221 is connected to the first nozzle, and the second driven gear 222 is connected to the second nozzle. Since the first driven gear 221 and the second driven gear 222 are symmetrically distributed on both sides of the driving gear 210, the first driven gear 221 and the second driven gear 222 can smoothly rotate, and more importantly, the first driven gear 221 and the second driven gear 222 are symmetrically distributed on both sides of the driving gear 210, so that the structure of the gear transmission assembly 200 can be compact, thereby realizing the miniaturization of the gear transmission assembly 200.

Further, as shown in fig. 7, in order to allow the nozzle 20 to rotate within a certain range, in order to stop the nozzle 20 from rotating when the nozzle rotates to the boundary of the preset range, in an embodiment of the present application, a first limit tooth 221a is disposed on the first driven gear 221, a second limit tooth 222a is disposed on the second driven gear 222, the first limit tooth 221a is used for limiting a limit position of the driving gear 210 rotating counterclockwise, and the second limit tooth 222a is used for limiting a limit position of the driving gear 210 rotating clockwise.

Further, referring to fig. 7, the structure of the mounting case 100 will now be described in detail. In this embodiment, the mounting case 100 includes a front case 110 and a rear case 120 detachably connected to each other, the front case 110 and the rear case 120 are fastened to form a mounting cavity, and the transmission assembly 200 is disposed in the mounting cavity.

Specifically, a plurality of first fixing holes are formed at intervals around the front case 110, a plurality of second fixing holes are formed around the rear case 120 corresponding to the plurality of first fixing holes, and the front case 110 and the rear case 120 are detachably coupled by screws or rivets after the first fixing holes and the second fixing holes are aligned.

Further, a detailed description is given of the mounting structure of the gear and the mounting housing 100, the inner wall surface of the front housing 110 close to the rear housing 120 is convexly provided with a positioning column 111, the driving gear 210 and the driven gear are provided with mounting holes corresponding to the positioning column 111, the positioning column 111 is in clearance fit with the mounting holes, and the driving gear 210 and the driven gear can be conveniently mounted by aligning and matching the positioning column 111 with the mounting holes.

However, the design of this patent is not limited thereto, in other embodiments, the transmission assembly 200 is a gear-link transmission assembly, and the gear-link transmission assembly 200 includes a driving motor 300, a driving gear 210, a link 230, and a driven gear 220, which are sequentially connected in a transmission manner, wherein the driven gear 220 includes a first driven gear 221 and a second driven gear 222; the nozzle 20 comprises a first nozzle and a second nozzle, the first driven gear 221 is connected with the first nozzle, and the second driven gear 222 is connected with the second nozzle.

Specifically, as shown in fig. 9, the linkage mode of the gear link 230 transmission assembly will be described, first, the driving motor 300 transmits the driving force to the driving gear 210, the driving gear 210 is connected to the first driven gear 221, the first driven gear 221 transmits the driving force to the second driven gear 222 through the link 230, the first driven gear 221 is connected to the first nozzle, and the second driven gear 222 is connected to the second nozzle, so that the driving force can be transmitted to the first nozzle and the second nozzle.

Further, referring to fig. 4 and 9, the transmission structure of the driving device 30 and the nozzle will now be described in detail. The transmission assembly is provided with a transmission part, the transmission end of the spray pipe is provided with a matching part, and the matching part is in transmission connection with the transmission part. Specifically, in this embodiment, the transmission portion is a hexagonal transmission shaft fixedly disposed on the driven gear of the transmission assembly, the matching portion is a hexagonal hole formed in the transmission end, and the hexagonal transmission shaft is inserted into the hexagonal hole in an adaptive manner.

However, the design of the present application is not limited thereto, and in other embodiments, the positions of the hexagonal shaft and the hexagonal hole may be reversed, that is: the hexagonal hole is arranged on the transmission assembly, and the hexagonal transmission shaft is arranged on the transmission end of the spray pipe; the structure of the transmission portion is not limited to the hexagonal transmission shaft, and may be a transmission shaft having a rectangular cross section, a transmission shaft having a triangular cross section, or the like. As a preferred mode, in this embodiment, still be equipped with the step shaft between hexagonal transmission shaft and the gear, so, can guarantee that hexagonal transmission shaft and gear are connected firmly.

Further, referring to fig. 3 and 4, the installation structure of the driving device 30 and the inner tub 10 of the dishwasher will now be described in detail. The outer wall of the inner container 10 is provided with a plurality of fixing pieces, the mounting shell 100 is provided with a connecting piece which is matched and fixed with the fixing pieces, and the connecting piece is matched and fixed with the fixing pieces.

Specifically, the fixing parts comprise a first fixing part 14 and a second fixing part 15 which are arranged at intervals in a first direction, and a plurality of first fixing parts 14 and a plurality of second fixing parts 15 are arranged at intervals in a second direction; the connecting pieces comprise a first connecting piece 121 and a second connecting piece 122 which are arranged at intervals in a first direction, and a plurality of first connecting pieces 121 and a plurality of second connecting pieces 122 are arranged at intervals in a second direction; the first direction is perpendicular to the second direction. Specifically, in this embodiment, the first direction is a vertical direction, and the second direction is a front-back direction, and since the fixing member and the connecting member are provided in plurality at intervals in the vertical direction and the front-back direction, the stability of the driving device 30 and the inner container 10 after installation can be ensured.

In an embodiment of the present invention, a mounting groove penetrating in a first direction is formed on the first fixing member 14; the first connecting piece 121 is convexly provided with a guide portion 121a extending along the first direction, the guide portion 121a is inserted into the mounting groove in an adaptive manner, and the guide portion 121a and the mounting groove are mounted in a positioning manner, so that the driving assembly and the inner container 10 can be conveniently mounted.

Specifically, the process of mounting the driving assembly to the inner container 10 will now be described in detail. Firstly, the guide part 121a is inserted into the mounting groove, after the guide part 121a and the mounting groove are mounted in place, the first fixing member 14 is aligned with the mounting hole on the first connecting member 121, and the second fixing member 15 is aligned with the mounting hole on the second connecting member 122, at this time, the driving assembly can be mounted on the outer wall of the inner container 10 by inserting a screw or a rivet into the mounting hole.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A drive arrangement for driving a spout on a dishwasher, the drive arrangement comprising:

the dishwasher also comprises an inner container, and the mounting shell is fixedly mounted on the inner container;

the transmission assembly is arranged in the mounting shell; and the number of the first and second groups,

the driving shaft of the driving motor is connected with the transmission assembly;

the spray pipe comprises a driving end, and a plurality of spray holes are formed in the spray pipe;

the transmission assembly comprises a driving gear connected with the driving motor and a driven gear connected with the driving gear, the driven gear is in transmission connection with a driving end of the spray pipe, the driving device is used for driving the spray pipe to rotate around the axis of the spray pipe, the driven gear comprises a first driven gear and a second driven gear which are meshed with two sides of the driving gear in a matching mode, the first driven gear and the second driven gear are symmetrically distributed on two sides of the driving gear, or the transmission assembly comprises a driving gear, a first driven gear, a connecting rod and a second driven gear which are in transmission connection in sequence, and the driving gear is connected with the driving motor;

the spray pipe comprises a first spray pipe and a second spray pipe, the first driven gear is connected with the first spray pipe, and the second driven gear is connected with the second spray pipe.

2. The drive of claim 1, wherein the first driven gear has a first limit tooth thereon, the second driven gear has a second limit tooth thereon, the first limit tooth is for limiting the limit position of the driving gear for counterclockwise rotation, and the second limit tooth is for limiting the limit position of the driving gear for clockwise rotation.

3. The drive device of claim 1 or 2, wherein the mounting housing comprises a front housing and a rear housing that are detachably connected, the front housing and the rear housing are buckled to form a mounting cavity, and the transmission assembly is arranged in the mounting cavity.

4. The driving device as claimed in claim 3, wherein a positioning post is convexly disposed on an inner wall surface of the front housing close to the rear housing, the driving gear and the driven gear are provided with mounting holes corresponding to the positioning post, and the positioning post is in clearance fit with the mounting holes.

5. A dishwasher, comprising:

the inner container is provided with a washing cavity;

the spray pipe is arranged in the washing cavity, a plurality of spray holes are formed in the spray pipe, and a first end of the spray pipe forms a transmission end; and the number of the first and second groups,

the drive device according to any one of claims 1 to 4, wherein a transmission assembly of the drive device is connected to a transmission end of the nozzle, and the drive device is used for driving the nozzle to rotate around the axis of the nozzle.

6. The dishwasher of claim 5, wherein the transmission assembly is provided with a transmission portion, and the transmission end of the spray pipe is provided with a matching portion, and the matching portion is in transmission connection with the transmission portion.

7. The dishwasher of claim 6, wherein the driving portion is a hexagonal shaft fixed to the driving assembly, the engaging portion is a hexagonal hole formed at the driving end, and the hexagonal shaft is inserted into the hexagonal hole.

8. The dishwasher of claim 5, wherein a plurality of fixing members are provided on an outer wall of the inner tub, and a connecting member adapted to be fixed to the fixing members is provided on the mounting case, the connecting member being adapted to be fixed to the fixing members.

9. The dishwasher of claim 8, wherein the holder includes a first holder and a second holder spaced apart in a first direction, the first holder and the second holder being spaced apart in a second direction;

the connecting pieces comprise a first connecting piece and a second connecting piece which are arranged at intervals in a first direction, and the first connecting piece and the second connecting piece are arranged at intervals in a second direction;

the first direction is perpendicular to the second direction.

10. The dishwasher of claim 9, wherein the first fixing member is formed with a mounting groove penetratingly disposed in the first direction; the first connecting piece is convexly provided with a guide part extending along the first direction, and the guide part is inserted into the mounting groove in an adaptive mode.