A driving device of a drum washing machine and a drum washing machine

Abstract

A driving device for a drum washing machine and the drum washing machine of the present invention relate to the technical field of drum washing machines, overcoming the defect of relatively low washing efficiency of existing drum washing machines. It includes a bearing seat concentrically installed in an outer cylinder, and is characterized in that: a front-mounted gearbox is provided in the bearing seat, the gearbox is hermetically rotatably arranged in the inner hole of the bearing seat, the gearbox can be integrally loaded from the front inside of the outer cylinder and extends out from the rear of the outer cylinder, and is axially fixed by a nut externally; the housing of the gearbox is mainly composed of a drum shaft, a drum shaft cover and an outer shaft, the drum shaft or the outer shaft is connected to the bearing seat through a large water seal and a bearing, and a driving gear train is also provided in the gearbox, and is connected to the drum shaft and the agitator shaft through the driving gear train to drive rotation, forming two power outputs of the drum shaft and the agitator shaft or a single power output of the agitator shaft; the present invention reduces the volume, saves costs, and improves the stability of the washing machine.

Description

Technical Field

[0001] The present invention relates to the technical field of drum washing machines, and particularly to a driving device and a drum washing machine of a drum washing machine. Background Art

[0002] Currently, the washing principle of a drum washing machine is that a motor directly or drives the washing machine drum to reciprocate circumferentially through a belt. The lifting ribs on the inner wall of the drum lift and disperse the clothes, and the clothes are suspended and beaten to achieve the purpose of cleaning the clothes. This washing method overcomes the defects of clothes entanglement and clothes wear of a pulsator washing machine, but has a long washing time, low washing efficiency, and low wash ratio.

[0003] In order to improve the cleaning ability, some current products adopt a structure of arranging a pulsator at the bottom of the drum, and making the drum and the pulsator rotate relatively at different speeds during washing to increase the friction between the clothes, thereby improving the wash ratio. For example, the patent with the application number 201480002635.3 of Haier discloses a double-power drum washing machine. This washing machine is driven by an outer-rotor DD motor, and the rotor is directly fixed to the pulsator through an inner shaft and rotates at the same speed; the sun gear fixed to the inner shaft transmits power to the drum shaft at an equal speed ratio through two-stage planetary gears to achieve the co-directional differential rotation of the pulsator and the drum. In order to compress the axial dimension and achieve the installation function, this structure requires a split design of the front and rear bearing brackets, and the gearbox is arranged between the front and rear bearings, and then the front and rear bearing brackets are connected together through assembly. As mentioned in the patent with the application number CN201710326312.5 of Haier, this connection method will cause loosening at the riveting joint of the brake wheel and the oil seal cover, resulting in a large amount of drum shaking and thus generating vibration noise and other problems. It is necessary to add end face bearings or adopt other solutions, which increases the cost and reduces the utilization rate of the axial dimension.

[0004] Due to the increased friction between the clothes, the double-power washing machine is more suitable for cleaning wear-resistant clothes such as jeans, but it will cause accelerated wear of clothes such as silk or wool. How to switch between the single-power and double-power modes according to the type of clothes to be washed on a washing machine is also a problem that needs to be solved by the drum washing machine.

[0005] For some drum washing machines, placing the gearbox on the motor side not only lengthens the installation dimension, but also makes the volume of the driving device large and the cost high, which is also a technical problem that needs to be solved by us. Summary of the Invention

[0006] The present invention aims to solve at least one of the above technical problems.

[0007] The purpose of the present invention is to provide a driving device and a drum washing machine of a drum washing machine to overcome the above defects, keep the washing drum clean, achieve environmental protection, save costs, and facilitate installation.

[0008] For the above purpose, the technical solution of the present invention is as follows: A driving device for a drum washing machine, including a bearing seat concentrically installed inside an outer tub, characterized in that: a gearbox is provided in front in the bearing seat, and the gearbox is hermetically and rotatably arranged in the inner hole of the bearing seat. The gearbox can be integrally installed from the front inside of the outer tub and extend out from the rear of the outer tub, and is axially fixed by a nut on the outside.

[0009] Furthermore, the housing of the gearbox is mainly composed of a drum shaft, a drum shaft cover and an outer shaft. The drum shaft or the outer shaft is connected to the bearing seat through a large water seal and a bearing. A driving gear train is also provided inside the gearbox. An inner shaft that rotates movably is provided inside the outer shaft. A pulsator shaft that rotates movably is also provided inside the gearbox. A power wheel or a clutch sleeve is provided on the outer shaft or the inner shaft. Under the cooperation of the clutch sleeve, the power wheel is drivingly connected to the drum shaft and the pulsator shaft through the driving gear train to form two power outputs of the drum shaft and the pulsator shaft or a single power output of the pulsator shaft.

[0010] Even further, the power wheel includes a direct drive motor rotor or a pulley drivingly connected to the motor. The power wheel is fixedly installed on the inner shaft. The clutch sleeve is axially movably installed on the outer shaft. Washing clutch teeth that can be engaged integrally are provided between the clutch sleeve and the bearing seat. Dehydration clutch teeth that can be drivingly engaged integrally are provided between the clutch sleeve and the power wheel.

[0011] The drum shaft cover is buckled on the outer shaft, and the drum shaft is movably installed inside the drum shaft cover.

[0012] The pulsator shaft and the inner shaft are a straight-through integral shaft.

[0013] According to the above solution, specifically, the driving gear train is a planetary gear train. The power wheel as the power input is installed on the inner shaft. An internal gear ring integrally fixed to the drum shaft cover and the outer shaft is provided inside the gearbox. The drum shaft movably installed inside the drum shaft cover is connected to a movable gear rack inside the gearbox. A driving gear that can rotate movably is provided on the gear rack. The driving gear meshes with an inner shaft gear provided in the middle of the inner shaft internally and meshes with the above internal gear ring externally. The pulsator shaft is integrally connected to the inner shaft to form a double output of the pulsator shaft and the drum shaft that rotates in the same direction as the pulsator shaft and is decelerated.

[0014] Or, even further, the power wheel includes a direct drive motor rotor or a pulley drivingly connected to the motor. The power wheel is fixedly installed on the outer shaft. The clutch sleeve is axially movably installed on the inner shaft. The inner shaft is radially movably connected to a housing installed on the outer tub. Washing clutch teeth that can be engaged integrally are provided between the clutch sleeve and the housing. Dehydration clutch teeth that can be drivingly engaged integrally are provided between the clutch sleeve and the power wheel.

[0015] More specifically, the drum shaft cover is snap-fitted onto the drum shaft, and the drum shaft and the outer shaft are integrally rigidly connected shafts.

[0016] Even more specifically, the agitator shaft and the inner shaft are non-through different shafts.

[0017] According to the above solution, specifically, the drive train is a fixed-axis gear train. The driving wheel as the power input is installed on the inner shaft. A fixed gear rack is provided in the inner cavity of the integrally connected drum shaft cover and the drum shaft. A driving gear is provided on the gear rack. The driving gear is a double-stage gear. The first-stage gear of the double-stage gear meshes with the inner shaft gear provided at the end of the inner shaft. The second-stage gear of the double-stage gear meshes with the output gear provided at the inner end of the agitator shaft. The inner part of the agitator shaft is rotatably connected to the inner shaft, forming a single-output agitator shaft with speed reduction.

[0018] According to the above solution, specifically, the drive train is a planetary gear train. The driving wheel as the power input is installed on the inner shaft. A fixed internal gear ring is provided on the inner wall of the drum shaft cover. A movable and rotating gear rack is provided in the gear box. The gear rack is connected to the agitator shaft. A rotatable driving gear is provided on the gear rack. The inner part of the driving gear meshes with the inner shaft gear provided at the end of the inner shaft, and the outer part meshes with the above internal gear ring, forming a single-output agitator shaft that rotates in the same direction as the inner shaft and has speed reduction.

[0019] According to the above solution, specifically, the drive train is a planetary gear train. The driving wheel as the power input is installed on the outer shaft. An internal gear ring integrally fixed with the inner shaft is provided in the gear box. A gear rack is provided on the drum shaft cover. A rotatable driving gear is provided on the gear rack. The inner part of the driving gear meshes with the output gear provided at the end of the agitator shaft, and the outer part meshes with the above internal gear ring. The agitator shaft is rotatably connected to the inner shaft, forming a double-output of the drum shaft and the agitator shaft that rotates in the same direction as the drum shaft and has speed increase.

[0020] According to the above solution, specifically, the drive train is a planetary gear train. The driving wheel as the power input is installed on the outer shaft. A gear rack integrally fixed with the inner shaft is provided in the gear box. An internal gear ring is provided on the inner wall of the drum shaft cover. A rotatable driving gear is provided on the gear rack. The inner part of the driving gear as the planetary gear meshes with the output gear provided at the end of the agitator shaft, and the outer part meshes with the above internal gear ring. The agitator shaft is rotatably connected to the inner shaft, forming a double-output of the drum shaft and a double-output that rotates in the opposite direction to the drum shaft and has speed increase.

[0021] More specifically, the drum shaft cover is snap-fitted onto the drum shaft, and the outer shaft is rotatably installed inside the drum shaft.

[0022] Furthermore, the impeller shaft and the inner shaft are a straight, integrated shaft.

[0023] Specifically, the driving gear train is a fixed-axis gear train, and the power wheel serving as the power input is installed on the inner shaft. The roller shaft cover and the inner and outer shafts of the roller shaft inner cavity that are connected as one are provided with a fixed gear rack, and the gear rack is provided with a driving gear serving as a double gear. The first-stage gear of the double gear is meshed with the inner shaft gear arranged in the middle of the inner shaft, and the second-stage gear of the double gear is meshed with the output gear fixedly connected to the roller shaft sleeve on the outer circle of the impeller shaft by the idler sleeve. The impeller shaft and the inner shaft are an integral shaft directly connected, forming a same-direction differential dual output of the impeller shaft with the same speed as the inner shaft and the reduced-speed roller shaft.

[0024] Specifically, the driving gear system is a planetary gear system, and the power wheel serving as the power input is installed on the inner shaft. The gear box is provided with a gear rack fixed integrally with the outer shaft, the inner wall of the roller shaft cover is provided with an inner gear ring, and the gear rack is provided with a rotatable driving gear. The driving gear is meshed with the inner shaft gear provided in the middle of the inner shaft inside and with the above-mentioned inner gear ring outside. The impeller shaft is integrally connected with the inner shaft to form a dual output of the impeller shaft and a roller shaft that is opposite to the impeller shaft and reduces speed.

[0025] A drum washing machine, comprising:

[0026] An outer drum, a drum located in the outer drum, a impeller arranged at the bottom of the drum, a drum flange integrally fastened to the bottom of the drum and a driving device of the drum washing machine as described above, wherein the drum shaft is fixedly connected to the drum through the drum flange, and the impeller shaft is fixedly connected to the impeller.

[0027] Furthermore, it also includes: a clutch control mechanism, wherein the clutch control mechanism controls the driving clutch sleeve to connect with the outer cylinder or the power wheel.

[0028] Furthermore, it also includes: a controller, which is electrically connected to the clutch control mechanism and is used to control the clutch control mechanism to be transmission-engaged with the outer drum or the power wheel during the washing stage according to the acquired washing mode instruction.

[0029] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention.

[0030] Compared with the prior art, the technical effect of the present invention is as follows: For the product of the present invention, by providing a front-mounted gearbox on the drum washing machine and cooperating with an auxiliary clutch mechanism, regardless of whether the driving wheel is installed on the inner shaft or the outer shaft, single power or double power can be output, directly acting on the agitator and the drum of the washing machine, and washing machines with different outputs can be manufactured according to the washing requirements of different clothes. This not only reduces the volume of the driving device, saves costs, but also improves the stability of the washing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 is a schematic cross-sectional structure diagram of Embodiment 1 of the driving device of the present invention;

[0033] Figure 2 is a schematic cross-sectional structure diagram of Embodiment 2 of the driving device of the present invention;

[0034] Figure 3 is a schematic cross-sectional structure diagram of Embodiment 3 of the driving device of the present invention;

[0035] Figure 4 is a schematic cross-sectional structure diagram of Embodiment 4 of the driving device of the present invention;

[0036] Figure 5 is a schematic cross-sectional structure diagram of the drive train of 4;

[0037] Figure 6 is Figure 4 a schematic cross-sectional structure diagram of the clutch principle of;

[0038] Figure 7 is a schematic cross-sectional structure diagram of Embodiment 5 of the driving device of the present invention;

[0039] Figure 8 is a schematic cross-sectional structure diagram of Embodiment 6 of the driving device of the present invention;

[0040] Figure 9 is a schematic cross-sectional structure diagram of Embodiment 7 of the driving device of the present invention;

[0041] Wherein, Figures 1 to 9 the corresponding relationship between the reference numerals in and the component names is:

[0042] Parts: 1. Outer cylinder; 2. Drum; 3. Drum flange; 4. Impeller; 5. Bearing seat; 6. Large water seal; 7. Bearing; 8. Clutch sleeve; 9. Power wheel; 10. Clutch control mechanism; 11. Inner shaft; 12. Impeller shaft; 13. Drum shaft; 14. Outer shaft; 15. Inner shaft gear; 16. Drum shaft cover; 17. Fixed sleeve; 18. Nut; 19. Inner gear ring; 20. Gear rack; 21. Drive gear; 22. Output gear. DETAILED DESCRIPTION

[0043] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0045] Refer to the following Figures 1 to 9 describe:

[0046] Combination Figure 1 , is a structural schematic diagram of a first embodiment of the driving device of the drum washing machine of the present invention, comprising a bearing seat 5 concentrically installed in the outer drum 1, wherein the bearing seat 5 is provided with a front gear box, wherein the gear box is sealed and rotatably arranged in the inner hole of the bearing seat 5, wherein the gear box can be integrally loaded from the front interior of the outer drum 1, extended from the rear of the outer drum 1, and axially fixed from the outside by a nut 18.

[0047] The gear box body is mainly composed of a drum shaft 13, a drum shaft cover 16 and an outer shaft 14. The drum shaft 13 is connected to the bearing seat 5 through a large water seal 6 and a bearing 7. The drum shaft cover 16 is buckled on the drum shaft 13. The drum shaft 13 and the outer shaft 14 are rigidly connected integral shafts; the impeller shaft 12 and the inner shaft 11 are non-straight-through heteromorphic shafts.

[0048] The power wheel 9 includes a direct-drive motor rotor or a pulley connected to the motor transmission. The power wheel 9 is fixedly mounted on the inner shaft 11, and the clutch sleeve 8 is axially movably mounted on the outer shaft 14. A washing clutch tooth that can be meshed with the bearing seat 5 is provided between the clutch sleeve 8 and the bearing seat 5, and a dehydration clutch tooth that can be transmission-engaged with the power wheel 9 is provided between the clutch sleeve 8 and the power wheel 9.

[0049] The gearbox is also provided with a driving gear train, the outer shaft 14 is provided with a movable rotating inner shaft 11, the gearbox is also provided with a movable rotating impeller shaft 12, the outer shaft 14 or the inner shaft 11 is provided with a power wheel 9 or a clutch sleeve 8, and the power wheel 9 is connected to the drum shaft 13 and the impeller shaft 12 through the driving gear train under the cooperation of the clutch sleeve 8, so as to form two power outputs of the drum shaft 13 and the impeller shaft 12 or a single power output of the impeller shaft 12.

[0050] The driving gear train is a fixed-axis gear train. The power wheel 9 serving as the power input is installed on the inner shaft 11. A fixed gear rack 20 is provided in the inner cavity of the integrally connected roller shaft cover 16 and the roller shaft 13. A driving gear 21 is provided on the gear rack 20. The driving gear 21 is a double gear. The first-stage gear of the double gear is meshed with the inner shaft gear 15 arranged at the end of the inner shaft 11, and the second-stage gear of the double gear is meshed with the output gear 22 arranged at the inner end of the impeller shaft 12. The impeller shaft 12 is rotatably connected to the inner shaft 11 to form a reduced single output of the impeller shaft 12.

[0051] Combination Figure 2 , is a schematic structural diagram of a second embodiment of the driving device of the drum washing machine of the present invention, comprising a bearing seat 5 concentrically installed in the outer drum 1, wherein a front gear box is arranged in the bearing seat 5, and the gear box is sealed and rotatably arranged in the inner hole of the bearing seat 5, and the gear box can be installed as a whole from the front interior of the outer drum 1, and extend from the rear of the outer drum 1, and is axially fixed by a nut 18 on the outside.

[0052] The gearbox body is mainly composed of a drum shaft 13, a drum shaft cover 16 and an outer shaft 14. The drum shaft 13 or the outer shaft 14 is connected to the bearing seat 5 through a large water seal 6 and a bearing 7. A driving gear train is also provided in the gearbox. A movable rotating inner shaft 11 is provided in the outer shaft 14. A movable rotating impeller shaft 12 is also provided in the gearbox. A power wheel 9 or a clutch sleeve 8 is provided on the outer shaft 14 or the inner shaft 11. The power wheel 9 is connected to the drum shaft 13 and the impeller shaft 12 through a driving gear train under the cooperation of the clutch sleeve 8, so as to form two power outputs of the drum shaft 13 and the impeller shaft 12 or a single power output of the impeller shaft 12.

[0053] The power wheel 9 includes a direct-drive motor rotor or a pulley connected to the motor transmission. The power wheel 9 is fixedly mounted on the inner shaft 11, and the clutch sleeve 8 is axially movably mounted on the outer shaft 14. A washing clutch tooth that can be meshed with the bearing seat 5 is provided between the clutch sleeve 8 and the bearing seat 5, and a dehydration clutch tooth that can be transmission-engaged with the power wheel 9 is provided between the clutch sleeve 8 and the power wheel 9.

[0054] The described drum shaft cover 16 is snap-fitted onto the drum shaft 13. The outer shaft 14 is rotatably mounted within the drum shaft 13, and the agitator shaft 12 and the inner shaft 11 are a straight-through integral shaft.

[0055] The described drive gear train is a fixed-axis gear train. The driving wheel 9 as the power input is mounted on the inner shaft 11. A fixed gear rack 20 is provided on the outer shaft 14 inside and outside the inner cavity of the drum shaft 13 which is integrally connected with the drum shaft cover 16. A driving rotation gear 21 as a double gear is provided on the gear rack 20. The first-stage gear of the double gear meshes with the inner shaft gear 15 provided in the middle of the inner shaft 11. The second-stage gear of the double gear meshes with the output gear 22 which is sleeved on the outer circumference of the agitator shaft 12 and fixedly connected to the drum shaft sleeve 16. The agitator shaft 12 and the inner shaft 11 are a straight-through connected integral shaft, forming a co-directional differential double output of the agitator shaft 12 with the same speed as the inner shaft 11 and the decelerated drum shaft 13.

[0056] Combined Figure 3 , it is a schematic structural diagram of the third embodiment of the drive device of the drum washing machine of the present invention, including a bearing seat 5 concentrically installed inside the outer cylinder 1. A front-mounted gearbox is provided inside the bearing seat 5. The gearbox is hermetically and rotatably arranged in the inner hole of the bearing seat 5. The gearbox can be integrally loaded from the front inside of the outer cylinder 1 and extend out from the rear of the outer cylinder 1, and is axially fixed by a nut 18 externally.

[0057] The housing of the described gearbox is mainly composed of a drum shaft 13, a drum shaft cover 16 and an outer shaft 14. The drum shaft 13 or the outer shaft 14 is connected to the bearing seat 5 through a large water seal 6 and a bearing 7. A drive gear train is also provided inside the gearbox. An inner shaft 11 that rotates movably is provided inside the outer shaft 14. An agitator shaft 12 that rotates movably is also provided inside the gearbox. A driving wheel 9 or a clutch sleeve 8 is provided on the outer shaft 14 or the inner shaft 11. Under the cooperative action of the clutch sleeve 8, the driving wheel 9 is drivingly rotationally connected to the drum shaft 13 and the agitator shaft 12 through the drive gear train, forming two power outputs of the drum shaft 13 and the agitator shaft 12 or a single power output of the agitator shaft 12.

[0058] The driving wheel 9 includes a direct-drive motor rotor or a pulley drivingly connected to the motor. The driving wheel 9 is fixedly mounted on the inner shaft 11. The clutch sleeve 8 is axially movably mounted on the outer shaft 14. Wash clutch teeth that can be meshed integrally are provided between the clutch sleeve 8 and the bearing seat 5. Dehydration clutch teeth that can be drivingly engaged integrally are provided between the clutch sleeve 8 and the driving wheel 9.

[0059] The described drum shaft cover 16 is snap-fitted onto the outer shaft 14. The drum shaft 13 is movably installed inside the drum shaft cover 16. The agitator shaft 12 and the inner shaft 11 are a straight-through integral shaft.

[0060] The driving gear train is a planetary gear train. The power wheel 9 serving as the power input is installed on the inner shaft 11. The gear box is provided with an inner gear ring 19 which is integrally fixed to the roller shaft cover 16 and the outer shaft 11. The roller shaft 13 movably installed in the roller shaft cover 16 is connected to a movable gear rack 20 in the gear box. The gear rack 20 is provided with a rotatable driving gear 21. The driving gear 21 is meshed with the inner shaft gear 15 provided in the middle of the inner shaft 11 internally and with the above-mentioned inner gear ring 19 externally. The impeller shaft 12 is integrally connected to the inner shaft 11 to form a dual output of the impeller shaft 12 and the roller shaft 13 which is in the same direction as the impeller shaft 12 and has a reduced speed.

[0061] Combination Figure 4 , Figure 5 and Figure 6 , is a schematic structural diagram of a fourth embodiment of the driving device of the drum washing machine of the present invention, comprising a bearing seat 5 concentrically installed in the outer drum 1, wherein a front gear box is arranged in the bearing seat 5, and the gear box is sealed and rotatably arranged in the inner hole of the bearing seat 5, and the gear box can be installed as a whole from the front interior of the outer drum 1, and extend from the rear of the outer drum 1, and is axially fixed from the outside by a nut 18.

[0062] The gearbox body is mainly composed of a drum shaft 13, a drum shaft cover 16 and an outer shaft 14. The drum shaft 13 or the outer shaft 14 is connected to the bearing seat 5 through a large water seal 6 and a bearing 7. A driving gear train is also provided in the gearbox. A movable rotating inner shaft 11 is provided in the outer shaft 14. A movable rotating impeller shaft 12 is also provided in the gearbox. A power wheel 9 or a clutch sleeve 8 is provided on the outer shaft 14 or the inner shaft 11. The power wheel 9 is connected to the drum shaft 13 and the impeller shaft 12 through a driving gear train under the cooperation of the clutch sleeve 8, so as to form two power outputs of the drum shaft 13 and the impeller shaft 12 or a single power output of the impeller shaft 12.

[0063] The power wheel 9 includes a direct-drive motor rotor or a pulley connected to the motor transmission. The power wheel 9 is fixedly mounted on the outer shaft 14. The clutch sleeve 8 can be axially movably mounted on the inner shaft 11. The inner shaft 11 is radially movably connected to the cover shell 17 installed on the outer cylinder 1. A washing clutch tooth that can be meshed together is provided between the clutch sleeve 8 and the cover shell 17. A dehydration clutch tooth that can be transmission-engaged together is provided between the clutch sleeve 8 and the power wheel 9.

[0064] The drum shaft cover 16 is buckled onto the drum shaft 13. The drum shaft 13 and the outer shaft 14 are rigidly connected as an integral shaft. The impeller shaft 12 and the inner shaft 11 are non-straight-through heteromorphic shafts.

[0065] The described drive train is a planetary gear train. The power wheel 9 serving as power input is installed on the outer shaft 14. An internal gear ring 19 integrally fixed with the inner shaft 11 is provided inside the gearbox. A gear carrier 20 is provided on the drum shaft cover 16. A rotatable drive gear 21 is provided on the gear carrier 20. The inner part of the drive gear 21 meshes with an output gear 22 provided at the end of the agitator shaft 12, and the outer part meshes with the above-mentioned internal gear ring 19. The agitator shaft 12 is rotatably connected to the inner shaft 11, forming a double output of the drum shaft 13 and the agitator shaft 12 that rotates in the same direction as the drum shaft 13 and has increased speed.

[0066] Combined Figure 7 , which is a schematic structural diagram of the fifth embodiment of the drive device of the drum washing machine of the present invention, includes a bearing seat 5 concentrically installed inside the outer tub 1. A front gearbox is provided inside the bearing seat 5. The gearbox is hermetically and rotatably arranged in the inner hole of the bearing seat 5. The gearbox can be integrally loaded from the front inside of the outer tub 1 and extend out from the rear of the outer tub 1, and is axially fixed externally by a nut 18.

[0067] The housing of the gearbox is mainly composed of a drum shaft 13, a drum shaft cover 16 and an outer shaft 14. The drum shaft 13 or the outer shaft 14 is connected to the bearing seat 5 through a large water seal 6 and a bearing 7. A drive train is also provided inside the gearbox. An inner shaft 11 that rotates movably is provided inside the outer shaft 14. An agitator shaft 12 that rotates movably is also provided inside the gearbox. A power wheel 9 or a clutch sleeve 8 is provided on the outer shaft 14 or the inner shaft 11. Under the cooperative action of the clutch sleeve 8, the power wheel 9 is drivingly connected to the drum shaft 13 and the agitator shaft 12 through the drive train to form two power outputs of the drum shaft 13 and the agitator shaft 12 or a single power output of the agitator shaft 12.

[0068] The power wheel 9 includes a direct drive motor rotor or a pulley drivingly connected to the motor. The power wheel 9 is fixedly installed on the inner shaft 11. The clutch sleeve 8 is axially movably installed on the outer shaft 14. A washing clutch tooth that can be meshed integrally is provided between the clutch sleeve 8 and the bearing seat 5. A dehydration clutch tooth that can be drivingly engaged integrally is provided between the clutch sleeve 8 and the power wheel 9.

[0069] The drum shaft cover 16 is buckled on the drum shaft 13. The outer shaft 14 is rotatably installed inside the drum shaft 13. The agitator shaft 12 and the inner shaft 11 are a straight-through integral shaft.

[0070] The described drive train is a planetary gear train. The power wheel 9 serving as power input is installed on the inner shaft 11. Inside the gearbox, there is a gear bracket 20 fixedly integrated with the outer shaft 11. On the inner wall of the drum shaft cover 16, there is an internal gear ring 19. On the gear bracket 20, there is a rotatable drive gear 21. Inside the drive gear 21, it meshes with the internal shaft gear 15 provided in the middle of the inner shaft 11, and outside, it meshes with the above-mentioned internal gear ring 19. The agitator shaft 12 is integrally connected with the inner shaft 11, forming a dual output of the agitator shaft 12 and the drum shaft 13 that is in the opposite direction and decelerated with respect to the agitator shaft 12.

[0071] Combined Figure 8 , it is a schematic structural diagram of the sixth embodiment of the drive device of the drum washing machine of the present invention, including a bearing seat 5 concentrically installed inside the outer tub 1. Inside the bearing seat 5, there is a pre-set gearbox. The gearbox is hermetically and rotationally arranged in the inner hole of the bearing seat 5. The gearbox can be integrally installed from the front inside of the outer tub 1 and extend out from the back of the outer tub 1, and is axially fixed by a nut 18 on the outside.

[0072] The housing of the described gearbox is mainly composed of a drum shaft 13, a drum shaft cover 16, and an outer shaft 14. The drum shaft 13 or the outer shaft 14 is connected to the bearing seat 5 through a large water seal 6 and a bearing 7. Inside the gearbox, there is also a drive train. Inside the outer shaft 14, there is a rotatable inner shaft 11. Inside the gearbox, there is also a rotatable agitator shaft 12. On the outer shaft 14 or the inner shaft 11, there is a power wheel 9 or a clutch sleeve 8. Under the cooperative action of the clutch sleeve 8, the power wheel 9 is drivingly connected to the drum shaft 13 and the agitator shaft 12 through the drive train to form two power outputs of the drum shaft 13 and the agitator shaft 12 or a single power output of the agitator shaft 12.

[0073] The power wheel 9 includes a direct drive motor rotor or a pulley drivingly connected to the motor. The power wheel 9 is fixedly installed on the outer shaft 14. The clutch sleeve 8 is axially movably installed on the inner shaft 11. The inner shaft 11 is radially movably connected to the housing 17 installed on the outer tub 1. Between the clutch sleeve 8 and the housing 17, there are washing clutch teeth that can be meshed into one body. Between the clutch sleeve 8 and the power wheel 9, there are dehydration clutch teeth that can be drivingly engaged into one body.

[0074] The drum shaft cover 16 is buckled on the drum shaft 13. The drum shaft 13 and the outer shaft 14 are a rigidly connected integral shaft. The agitator shaft 12 and the inner shaft 11 are non-through different shafts.

[0075] The described drive train is a planetary gear train. The power wheel 9 serving as power input is installed on the outer shaft 14. Inside the gearbox, there is a gear rack 20 integrally fixed with the inner shaft 11. An internal gear ring 19 is provided on the inner wall of the drum shaft cover 16. On the gear rack 20, there is a rotatable drive gear 21. The drive gear 21, which serves as a planetary gear, meshes internally with an output gear 22 provided at the end of the agitator shaft 12 and externally with the above-mentioned internal gear ring 19. The agitator shaft 12 is rotatably connected to the inner shaft 11, forming a drum shaft 13 and a double output that is reverse and speed-increasing to the drum shaft 13.

[0076] Combined Figure 9 , it is a schematic structural diagram of the seventh embodiment of the drive device of a drum washing machine according to the present invention, including a bearing seat 5 concentrically installed inside the outer tub 1. Inside the bearing seat 5, there is a pre-set gearbox. The gearbox is hermetically and rotatably arranged in the inner hole of the bearing seat 5. The gearbox can be integrally loaded from the front inside of the outer tub 1 and protrude from the back of the outer tub 1, and is axially fixed externally by a nut 18.

[0077] The housing of the gearbox is mainly composed of a drum shaft 13, a drum shaft cover 16, and an outer shaft 14. The drum shaft 13 or the outer shaft 14 is connected to the bearing seat 5 through a large water seal 6 and a bearing 7. Inside the gearbox, there is also a drive train. Inside the outer shaft 14, there is a rotatable inner shaft 11. Inside the gearbox, there is also a rotatable agitator shaft 12. On the outer shaft 14 or the inner shaft 11, there is a power wheel 9 or a clutch sleeve 8. Under the cooperative action of the clutch sleeve 8, the power wheel 9 is drivingly connected to the drum shaft 13 and the agitator shaft 12 through the drive train to form two power outputs of the drum shaft 13 and the agitator shaft 12 or a single power output of the agitator shaft 12.

[0078] The power wheel 9 includes a direct drive motor rotor or a pulley drivingly connected to the motor. The power wheel 9 is fixedly installed on the inner shaft 11. The clutch sleeve 8 is axially movable and installed on the outer shaft 14. Between the clutch sleeve 8 and the bearing seat 5, there are washing clutch teeth that can be meshed integrally. Between the clutch sleeve 8 and the power wheel 9, there are dehydration clutch teeth that can be drivingly engaged integrally.

[0079] The drum shaft cover 16 is buckled on the drum shaft 13. The drum shaft 13 and the outer shaft 14 are a rigidly connected integral shaft. The agitator shaft 12 and the inner shaft 11 are non-through different shafts.

[0080] The driving gear train is a planetary gear train. The power wheel 9 serving as the power input is installed on the inner shaft 11. A fixed inner gear ring 19 is provided on the inner wall of the roller shaft cover 16. A movable and rotating gear rack 20 is provided in the gear box. The gear rack 20 is connected to the impeller shaft 12. A movable and rotating driving gear 21 is provided on the gear rack 20. The driving gear 21 is meshed with the inner shaft gear 15 provided at the end of the inner shaft 11 internally and meshed with the above-mentioned inner gear ring 19 externally, forming a single output of the impeller shaft 12 in the same direction as the inner shaft 11 and with reduced speed.

[0081] A drum washing machine comprises: an outer drum 1, a drum 2 located in the outer drum 1, a impeller 4 arranged at the inner bottom of the drum 2, a drum flange 3 integrally fastened to the bottom of the drum 2 and a driving device of the drum washing machine as described above, wherein the drum shaft 13 is fixedly connected to the drum 2 via the drum flange 3, the impeller shaft 12 is fixedly connected to the impeller 4, and further comprises: a clutch control mechanism, wherein the clutch control mechanism controls a driving clutch sleeve 8 to be connected to the outer drum 1 or the power wheel 9, and further comprises: a controller, which is electrically connected to the clutch control mechanism and is used to control the clutch control mechanism to be transmission-engaged with the outer drum 1 or the power wheel 9 during the washing stage according to an acquired washing mode instruction.

[0082] The above describes in detail Figures 1 to 9 , which is the connection structure of various embodiments during washing operation.

[0083] When dehydration is in progress, the clutch sleeve 8, under the action of the clutch control mechanism, drives the clutch sleeve 8 to combine with the power wheel 9 as a whole, separates from the outer cylinder 1, and drives the entire driving device, the impeller 4 and the drum 2 to rotate together for dehydration, which will not be described in detail here.

[0084] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "upper" and "lower" etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0085] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0086] In the description of this specification, the descriptions of the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection 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 instance. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0087] The foregoing are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A drum washing machine, characterized in that: Comprising: An outer cylinder (1), a drum (2) located inside the outer cylinder (1), a pulsator (4) provided at the inner bottom of the drum (2), a drum flange (3) integrally and firmly connected to the bottom of the drum (2), and a driving device. The drum shaft (13) is fixedly connected to the drum (2) through the drum flange (3), and the pulsator shaft (12) is fixedly connected to the pulsator (4); The driving device includes a bearing seat (5) concentrically installed inside the outer cylinder (1), characterized in that: a front-mounted gearbox is provided inside the bearing seat (5), the gearbox is hermetically and rotatably arranged in the inner hole of the bearing seat (5), the gearbox can be integrally loaded from the front inside of the outer cylinder (1) and extends out from the rear of the outer cylinder (1), and is axially fixed by a nut (18) externally; The housing of the gearbox is mainly composed of a drum shaft (13), a drum shaft cover (16) and an outer shaft (14). The drum shaft (13) or the outer shaft (14) is connected to the bearing seat (5) through a large water seal (6) and a bearing (7). A driving gear train is also provided inside the gearbox. An inner shaft (11) that rotates movably is provided inside the outer shaft (14). A pulsator shaft (12) that rotates movably is also provided inside the gearbox. Under the cooperative action of a clutch sleeve (8), a power wheel (9) is drivingly connected to the drum shaft (13) and the pulsator shaft (12) through the driving gear train to drive rotation, forming two power outputs of the drum shaft (13) and the pulsator shaft (12) or a single power output of the pulsator shaft (12); The power wheel (9) includes a direct-drive motor rotor or a pulley drivingly connected to a motor. The power wheel (9) is fixedly installed on the inner shaft (11). The clutch sleeve (8) is axially movably installed on the outer shaft (14). Washing clutch teeth that can be meshed integrally are provided between the clutch sleeve (8) and the bearing seat (5). Dehydration clutch teeth that can be drivingly engaged integrally are provided between the clutch sleeve (8) and the power wheel (9); The drum shaft cover (16) is buckled on the outer shaft (14), and the drum shaft (13) is movably installed inside the drum shaft cover (16); The pulsator shaft (12) and the inner shaft (11) are a straight-through integral shaft.

2. The drum washing machine according to claim 1, wherein: The driving gear train is a planetary gear train. The power wheel (9) as the power input is installed on the inner shaft (11). An internal gear ring (19) integrally fixed to the drum shaft cover (16) and the outer shaft (14) is provided inside the gearbox. The drum shaft (13) movably installed inside the drum shaft cover (16) is connected to a movable gear carrier (20) inside the gearbox. A driving gear (21) that can rotate movably is provided on the gear carrier (20). The driving gear (21) is meshed with an inner shaft gear (15) provided in the middle of the inner shaft (11) internally and meshed with the above internal gear ring (19) externally. The pulsator shaft (12) is integrally connected to the inner shaft (11) to form a double output of the pulsator shaft (12) and the drum shaft (13) that is in the same direction as the pulsator shaft (12) and decelerated.

3. The drum washing machine according to claim 1, characterized in that: The described driving wheel (9) includes a direct drive motor rotor or a pulley transmission-connected to a motor. The driving wheel (9) is fixedly installed on the outer shaft (14). The clutch sleeve (8) is axially movably installed on the inner shaft (11). The inner shaft (11) is radially movably connected to a housing (17) installed on the outer cylinder (1). A washing clutch tooth that can be engaged into one body is provided between the clutch sleeve (8) and the housing (17). A dehydration clutch tooth that can be transmission-engaged into one body is provided between the clutch sleeve (8) and the driving wheel (9).

4. The drum washing machine according to claim 1, characterized in that: The described drum shaft cover (16) is buckled on the drum shaft (13). The drum shaft (13) and the outer shaft (14) are an integral shaft rigidly connected. The agitator shaft (12) and the inner shaft (11) are non-through different shafts.

5. The drum washing machine according to claim 4, characterized in that: The described drive train is a fixed-axis gear train. The driving wheel (9) as power input is installed on the inner shaft (11). A fixed gear rack (20) is provided in the inner cavities of the connected drum shaft cover (16) and the drum shaft (13). A driving rotation gear (21) is provided on the gear rack (20). The driving rotation gear (21) is a double gear. The first-stage gear of the double gear meshes with an inner shaft gear (15) provided at the end of the inner shaft (11). The second-stage gear of the double gear meshes with an output gear (22) provided at the inner end of the agitator shaft (12). The agitator shaft (12) is rotatably connected to the inner shaft (11) inside to form a single output of the agitator shaft (12) with speed reduction.

6. The drum washing machine according to claim 4, characterized in that: The described drive train is a planetary gear train. The driving wheel (9) as power input is installed on the inner shaft (11). A fixed internal gear ring (19) is provided on the inner wall of the drum shaft cover (16). A movably rotating gear rack (20) is provided in the gear box. The gear rack (20) is connected to the agitator shaft (12). A movably rotating driving rotation gear (21) is provided on the gear rack (20). The inside of the driving rotation gear (21) meshes with an inner shaft gear (15) provided at the end of the inner shaft (11), and the outside meshes with the above internal gear ring (19) to form a single output of the agitator shaft (12) that rotates in the same direction as the inner shaft (11) and has speed reduction.

7. The drum washing machine according to claim 3, wherein: The described drum shaft cover (16) is buckled on the drum shaft (13). The drum shaft (13) and the outer shaft (14) are an integral shaft rigidly connected. The agitator shaft (12) and the inner shaft (11) are non-through different shafts.

8. The drum washing machine according to claim 7, characterized in that: The described drive train is a planetary gear train. The driving wheel (9) for power input is installed on the outer shaft (14). An internal gear ring (19) integrally fixed with the inner shaft (11) is provided inside the gearbox. A gear carrier (20) is provided on the drum shaft cover (16). A rotatable drive gear (21) is provided on the gear carrier (20). The inner part of the drive gear (21) meshes with an output gear (22) provided at the end of the agitator shaft (12), and the outer part meshes with the above-mentioned internal gear ring (19). The agitator shaft (12) is rotatably connected to the inner shaft (11), forming a double output of a drum shaft (13) and an agitator shaft (12) that rotates in the same direction as the drum shaft (13) and has increased speed.

9. The drum washing machine according to claim 7, wherein: The described drive train is a planetary gear train. The driving wheel (9) for power input is installed on the outer shaft (14). A gear carrier (20) integrally fixed with the inner shaft (11) is provided inside the gearbox. An internal gear ring (19) is provided on the inner wall of the drum shaft cover (16). A rotatable drive gear (21) is provided on the gear carrier (20). The drive gear (21) acting as a planetary gear meshes with an output gear (22) provided at the end of the agitator shaft (12) inside, and meshes with the above-mentioned internal gear ring (19) outside. The agitator shaft (12) is rotatably connected to the inner shaft (11), forming a double output that rotates in the opposite direction to the drum shaft (13) and has increased speed.

10. The drum washing machine according to claim 1, characterized in that: The drum shaft cover (16) is buckled on the drum shaft (13), and the outer shaft (14) is rotatably installed inside the drum shaft (13).

11. The drum washing machine according to claim 10, characterized in that: The described drive train is a fixed-axis gear train. The driving wheel (9) for power input is installed on the inner shaft (11). A fixed gear carrier (20) is provided on the outer shaft (14) inside and outside the inner cavity of the integrally connected drum shaft cover (16) and drum shaft (13). A drive gear (21) acting as a double gear is provided on the gear carrier (20). The first-stage gear of the double gear meshes with an inner shaft gear (15) provided in the middle of the inner shaft (11). The second-stage gear of the double gear meshes with an output gear (22) that is sleeved on the outer circle of the agitator shaft (12) and fixedly connected to the drum shaft cover (16). The agitator shaft (12) and the inner shaft (11) are directly connected as an integral shaft, forming a co-directional differential double output of an agitator shaft (12) with the same speed as the inner shaft (11) and a drum shaft (13) with reduced speed.

12. The drum washing machine according to claim 10, characterized in that: The driving gear train is a planetary gear train. The power wheel (9) serving as the power input is mounted on the inner shaft (11). The gear box is provided with a gear rack (20) fixed integrally with the outer shaft (14). The inner wall of the roller shaft cover (16) is provided with an inner gear ring (19). The gear rack (20) is provided with a rotatable driving gear (21). The driving gear (21) is meshed with an inner shaft gear (15) provided in the middle of the inner shaft (11) and is meshed with the inner gear ring (19) on the outside. The impeller shaft (12) is integrally connected with the inner shaft (11) to form a dual output of the impeller shaft (12) and a roller shaft (13) which is opposite to the impeller shaft (12) and has a reduced speed.

13. The drum washing machine according to claim 1, characterized in that, Also includes: A clutch control mechanism, wherein the clutch control mechanism controls the driving clutch sleeve (8) to be connected to the outer cylinder (1) or the power wheel (9).

14. The drum washing machine according to claim 13, wherein, Also includes: A controller is electrically connected to the clutch control mechanism and is used to control the clutch control mechanism to be transmission-engaged with the outer tub (1) or the power wheel (9) during the washing phase according to the acquired washing mode instruction.

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