CN110409126B

CN110409126B - Deceleration clutch for drum washing machine and washing machine

Info

Publication number: CN110409126B
Application number: CN201810403810.XA
Authority: CN
Inventors: 栾厚利; 迟宗锐; 王珊; 金平; 郑晓秋; 王东山
Original assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Electric Appliance Co Ltd; Haier Smart Home Co Ltd
Priority date: 2018-04-28
Filing date: 2018-04-28
Publication date: 2023-08-18
Anticipated expiration: 2038-04-28
Also published as: CN110409126A

Abstract

The application discloses a speed reducing clutch for a drum washing machine, which comprises a large bearing seat, wherein an installation cavity is arranged on the large bearing seat, a brake wheel arranged in the installation cavity of the large bearing seat and a wheel train arranged in the brake wheel, and a second bearing for positioning and supporting a motor shaft penetrating end penetrating into the washing machine is arranged at a first end of the installation cavity along the axial direction; the second end of installation chamber along the axis direction is uncovered to be set up, and uncovered department detachable installs little bearing frame, little bearing frame on install and supply to wear to the inside motor shaft of installation chamber and penetrate the first bearing that the end location was supported. The speed reduction clutch housing is arranged to be the large bearing seat and the small bearing seat which are fixedly connected through the bolts, so that the speed reduction clutch housing can be quickly disassembled and assembled, and the assembly efficiency of the speed reduction clutch is improved. The application also relates to a drum washing machine with the speed reducing clutch.

Description

Deceleration clutch for drum washing machine and washing machine

Technical Field

The application relates to a component in a household appliance, in particular to a speed reducing clutch for a drum washing machine, and also relates to a drum washing machine provided with the speed reducing clutch.

Background

The existing drum washing machine is generally provided with an outer drum in the washing machine, an inner drum driven by a motor to rotate is arranged in the outer drum, and after clothes are put into the inner drum, a small amount of washing water flows into the outer drum to soak the clothes, so that the clothes are fully mixed with the washing water containing detergent; and then the motor is used for driving the inner cylinder to rotate, the lifting ribs and other structures arranged in the inner cylinder are used for lifting and beating clothes, and the beating acting force is used for washing the clothes.

In order to improve the washing efficiency of a drum washing machine, the applicant proposes a novel drum washing machine, in which an inner drum is arranged, and a pulsator is mounted in the inner drum. In the washing process of the washing machine, the inner cylinder and the pulsator are driven by the motor to generate differential motion so as to improve the water flow intensity in the outer cylinder of the washing machine and further improve the washing ratio of clothes. However, in the prior art, the drum washing machine directly drives the inner drum to rotate by using the motor, and how to arrange the speed reduction clutch on the drum washing machine with the pulsator so as to reasonably distribute the driving force of the motor by using the speed reduction clutch, so that the technical problems of driving the pulsator and the inner drum to rotate in a differential manner in the washing process of the washing machine and driving the pulsator and the inner drum to rotate at the same speed in the dehydration process of the washing machine become urgent needs to be solved.

The present application has been made in view of this.

Disclosure of Invention

The application aims to solve the technical problems of overcoming the defects of the prior art and providing a speed reduction clutch for a drum washing machine so as to realize the purpose of power distribution output on a pulsator shaft and a drum shaft of the drum washing machine; the application further aims to achieve the aim of quickly mounting and dismounting the speed reduction clutch housing; the application further aims to realize the purposes of stable transmission of the clutch engagement sleeve and reduction of the operation noise of the speed reduction clutch in the operation process of the speed reduction clutch; the application also aims to realize the purposes of positioning detection of the clutch engagement sleeve and improving the running stability and the installation reliability of the speed reduction clutch.

In order to solve the technical problems, the basic conception of the technical scheme adopted by the application is as follows:

the speed reducing clutch for the drum washing machine comprises a large bearing seat, wherein an installation cavity is formed in the large bearing seat, a brake wheel arranged in the installation cavity of the large bearing seat and a wheel train arranged in the brake wheel, and a second bearing for positioning and supporting a motor shaft penetrating end penetrating into the washing machine is arranged at a first end of the installation cavity along the axial direction; the second end of installation chamber along the axis direction is uncovered to be set up, and uncovered department detachable installs little bearing frame, little bearing frame on install and supply to wear to the inside motor shaft of installation chamber and penetrate the first bearing that the end location was supported.

Further, one side of the small bearing seat is correspondingly attached and sealed with the open side of the large bearing seat, and the sealed and attached part is fixedly installed through at least one fastening bolt which sequentially penetrates through the small bearing seat and the large bearing seat.

Further, the small bearing seat is of an annular structure with the peripheral diameter larger than the diameter of the opening of the large bearing seat installation cavity, the small bearing seat and the installation cavity are coaxially arranged, a plurality of through holes are uniformly distributed on the small bearing seat around the axis, and the distance between each through hole and the axis of the small bearing seat is larger than the radius of the opening of the large bearing seat installation cavity; the large bearing seat is provided with a disk-shaped mounting part which radially extends outwards from the outer wall of the mounting cavity, and the mounting part is provided with bolt holes which are arranged in one-to-one correspondence with the through holes, so that the penetrating ends of the fastening bolts penetrate through the small bearing seat from the corresponding through holes and then are in threaded engagement with the corresponding bolt holes on the large bearing seat; preferably, the distance between each through hole and the axle center of the small bearing seat is equal.

Furthermore, the small bearing seat is provided with a splicing rib protruding and extending towards the large bearing seat, the splicing rib encloses into a circumference shape corresponding to the opening of the installation cavity, and the outer circumference side of the circumference-shaped splicing rib is correspondingly sealed and attached to the inner wall of the opening of the installation cavity.

Further, a positioning groove section with increased radial distance is arranged on the inner wall surface of the open end of the installation cavity, the diameter of the inner wall surface of the positioning groove section is equal to the diameter of the outer peripheral surface of the plug-in rib, or the plug-in rib is in interference fit, and the plug-in end of the plug-in rib is in fit contact with the inner end surface of the positioning groove section, which is close to the center side of the installation cavity, so as to position the plug-in position of the small bearing seat; preferably, the outer side of the end part of the splicing rib is provided with a chamfer, and the inner side of the outer end surface of the positioning groove section is provided with a chamfer.

Further, at least one positioning notch is formed in the periphery of the small bearing seat, and positioning ribs matched with the positioning notch are arranged on the large bearing seat, so that the positioning ribs are correspondingly inserted into the positioning notch when the small bearing seat is fixedly arranged on the large bearing seat.

Further, the outer circumference of the motor shaft penetrating end is sleeved with a shaft sleeve which is coaxially arranged and forms a drum shaft, one end of the drum shaft is meshed and connected with the motor shaft through a gear train, the other end of the drum shaft penetrates through a large bearing seat and then is meshed and connected with a drum of the washing machine, and the outer circumference of the drum shaft is in limit support with a second bearing.

Further, the first end of the mounting cavity is provided with a circle of extending ribs extending along the axis of the mounting cavity, and the inner peripheral wall of the extending ribs surrounds a bearing mounting part for mounting a second bearing; the inner periphery of the annular small bearing seat is provided with a circle of assembly ribs extending along the axis of the installation cavity, and the inner peripheral wall of the assembly ribs encloses a bearing installation part for the assembly of the first bearing.

Further, the second bearing comprises at least two mutually independent bearings, and each bearing is sequentially arranged in a bearing installation part at the first end of the large bearing seat installation cavity along the axial direction of the motor shaft; and/or the first bearing comprises at least two mutually independent bearings, and each bearing is sequentially arranged in a bearing installation part formed around the inner periphery of the small bearing seat along the axial direction of the motor shaft.

The application also discloses a drum washing machine provided with any one of the speed reduction clutches, which comprises a drum, wherein a pulsator is arranged in the drum, the drum is meshed with a drum shaft of the speed reduction clutch, and the pulsator is meshed with a motor shaft penetrating end of the speed reduction clutch.

After the technical scheme is adopted, compared with the prior art, the application has the following beneficial effects:

through the arrangement, the motor rotor of the drum washing machine can be controlled to distribute and output the driving acting force through the speed reduction clutch, the aim of controlling the drum and the impeller of the drum washing machine to execute co-speed rotation or differential rotation is achieved, and the effects that the drum washing machine can be controlled to adjust the states of the drum and the impeller by utilizing the speed reduction clutch so as to control the drum washing machine to correspondingly execute the washing process and the dewatering process are achieved.

The speed reduction clutch housing is arranged to be a large bearing seat and a small bearing seat which are fixedly connected through bolts, so that the speed reduction clutch housing can be quickly disassembled and assembled, and the assembly efficiency of the speed reduction clutch is improved; meanwhile, the speed reduction clutch housing is assembled in a screw disassembling and assembling mode, so that the structural complexity of the device can be effectively simplified, and the production cost can be reasonably reduced.

The following describes the embodiments of the present application in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

FIG. 1 is a schematic rear view of a reduction clutch for a drum washing machine according to an embodiment of the present application;

FIG. 2 is a schematic view of the structure of section A-A of FIG. 1 in an embodiment of the present application;

FIG. 3 is a schematic view of the structure of section B-B of FIG. 1 in accordance with an embodiment of the present application;

FIG. 4 is a schematic view of the structure of section C-C of FIG. 1 in an embodiment of the application;

fig. 5 is a schematic view showing an exploded structure of a reduction clutch for a drum washing machine in accordance with an embodiment of the present application;

fig. 6 is a schematic side view of a reduction clutch for a drum washing machine according to an embodiment of the present application.

In the figure: 1. a housing; 2. a motor; 3. a clutch engagement sleeve; 4. a clutch fixed disc; 5. a motor shaft; 6. a drum shaft; 7. a brake wheel; 8. a wheel train; 9. a shifting fork; 10. a large bearing seat; 11. a small bearing seat; 12. a mounting cavity; 13. a first bearing; 14. a second bearing; 15. a fastening bolt; 16. positioning columns; 17. a screw post; 18. a mounting part; 19. splicing ribs; 110. a positioning groove section; 111. positioning the notch; 112. an extension rib; 113. assembling ribs; 114. prying the bolt; 115. a positioning groove; 116. supporting a platform; 21. a rotor; 22. a meshing groove; 23. engagement ribs; 30. a return spring; 31. an outer ring meshing tooth; 32. clamping ribs; 33. inner engagement teeth; 34. meshing teeth; 35. an elastic pad; 36. a circular ring; 37. a coating section; 41. inner ring meshing teeth; 42. a position sensor; 81. an input shaft sleeve; 82. a planet carrier; 83. a sun gear; 84. a first planet; 85. a second planet wheel; 86. an inner gear ring; 811. an external engagement tooth; 91. a connecting rib; 92. and a limit rib.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application, and the following embodiments are used to illustrate the present application, but are not intended to limit the scope of the present application.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 6, an embodiment of the present application provides a reduction clutch for a drum washing machine, which includes a housing 1, wherein the housing 1 is assembled with a bottom of an outer tub of the washing machine to fixedly mount the reduction clutch on the drum washing machine; a motor 2 including a rotatable rotor 21 to provide a rotational force to a drum and pulsator of the drum washing machine; an installation cavity 12 is arranged in the shell 1, a brake wheel 7 is arranged in the installation cavity 12, and a wheel train 8 is arranged in the brake wheel 7; one end of a motor shaft 5 is meshed with a motor rotor 21, and the other end of the motor shaft passes through a gear train 8 arranged in the shell 1 to form a pulsator shaft which is meshed and connected with a pulsator of the drum washing machine; one end of a drum shaft 6 is meshed with the wheel train 8, and the other end of the drum shaft is meshed with a drum of the drum washing machine; the gear train 8 is also provided with an input shaft sleeve 81, the input shaft sleeve 81 is meshed with the clutch meshing sleeve 3 and other components in the gear train 8, the clutch meshing sleeve 3 can move along the axial direction of the motor shaft 5 under the action of a clutch driving device so as to respectively mesh with the motor rotor 21 for co-rotation or mesh with the clutch fixing sleeve 4 arranged on the shell 1 for braking, and the purposes of differential rotation of the inner cylinder and the impeller and co-speed rotation of the inner cylinder and the impeller of a dewatering program are realized when the drum washing machine executes a washing program.

In the embodiment of the application, the gear train 8 comprises a planet carrier 82, a first planet gear 84 and a second planet gear 85 which are meshed with each other are arranged on the planet carrier 82, the first planet gear 84 is meshed with a central sun gear 83, the second planet gear 85 is meshed with an inner gear ring 86, the sun gear 83 is fixedly arranged on a motor shaft 5 and rotates together with the motor shaft 5, the inner gear ring 86 is fixedly connected with a roller shaft 6, and the planet carrier 82 is fixedly connected with an input shaft sleeve 81.

When the washing machine executes the dehydration procedure, the transmission mode of the speed reduction clutch is as follows:

at this time, the clutch engagement sleeve is engaged with the motor rotor and separated from the shell; the motor rotor drives the motor shaft and the clutch engagement sleeve to rotate at the same speed, and the motor shaft directly drives the impeller to rotate at the same rotating speed as the motor rotor; the clutch engagement sleeve drives the input shaft sleeve to rotate at the same speed, the input shaft sleeve drives the planet carrier to rotate at the same speed, at the moment, the sun gear is driven by the motor shaft to rotate at the same speed, so that the first planet gear and the second planet gear do not rotate, the planet carrier directly drives the annular gear to rotate at the same speed through the second planet gear, the annular gear drives the roller shaft to rotate at the same speed, the roller is driven to rotate at the same rotation speed as the motor rotor, and the roller and the impeller rotate at the same speed.

When the washing machine executes a washing program, the transmission mode of the speed reducing clutch is as follows:

at this time, the clutch engagement sleeve is separated from the motor rotor and fixed with the shell; the motor rotor only independently drives the motor shaft to rotate, and the motor shaft directly drives the impeller to rotate at the same rotating speed as the motor rotor; at the moment, the planet carrier is fixed with the shell through the clutch shaft sleeve, the sun wheel is driven by the motor shaft to rotate at the same speed to drive the first planet wheel to rotate at different directions in a differential speed, the first planet wheel drives the second planet wheel to rotate at different directions in a differential speed, the second planet wheel drives the inner gear ring to rotate at the same direction in a differential speed, the inner gear ring drives the roller shaft to rotate, and the roller is driven to rotate at different rotation speeds and in the same direction with the motor rotor, so that the roller and the impeller rotate at different speeds.

In the embodiment of the application, a shell 1 of a speed reduction clutch comprises a large bearing seat 10, a brake wheel 7 arranged in an installation cavity 12 of the large bearing seat 10 and a wheel train 8 arranged in the brake wheel 7, wherein a small bearing seat 11 is hermetically arranged at the open end of one side of the brake wheel 7 close to a motor, and a first bearing 13 is arranged in the small bearing seat 11; the other side of the large bearing housing 10 opposite the open end of the mounting cavity 12 is mounted with a second bearing 14. The first bearing 13 is in limited supporting contact with the input shaft sleeve 81, and the second bearing 14 is in limited supporting contact with the drum shaft 6. Therefore, the purpose that bearings are respectively arranged at the front end and the rear end of the shell to effectively support the roller is achieved. Meanwhile, since the motor shaft 5 is sequentially meshed with the sun gear 83, the first planet gears 84, the second planet gears 85 and the annular gear 86, the annular gear 86 is fixedly connected with the drum shaft 6, the planet carrier 82 is fixedly connected with the input shaft sleeve 81, the first bearing 13 and the second bearing 14 can directly transmit supporting acting force to the motor shaft 5, and effective supporting of the motor shaft is achieved.

Example 1

As shown in fig. 1 and 2, the present embodiment describes a reduction clutch for a drum washing machine, which includes a large bearing housing 10, a mounting cavity 12 is provided on the large bearing housing 10, a brake wheel 7 provided in the large bearing housing mounting cavity 12, and a wheel train 8 provided in the brake wheel 7, a first end of the mounting cavity 12 along the axial direction is provided with a second bearing 14 for positioning and supporting the exit end of a motor shaft 5 penetrating into the washing machine; the second end of installation cavity 12 along the axis direction is open to be set up, and open department detachable installs little bearing frame 11, little bearing frame 11 on install and supply to wear to the inside motor shaft of installation cavity 12 and penetrate end location support's first bearing 13.

In this embodiment, one side of the small bearing seat 11 is correspondingly attached to and sealed with the open side of the large bearing seat 10, and the sealed and attached part is fixedly installed by at least one fastening bolt 102 penetrating through the small bearing seat 11 and the large bearing seat 10 in sequence.

In this embodiment, the small bearing seat 11 is an annular structure with a peripheral diameter larger than the diameter of the opening of the large bearing seat installation cavity 12, the small bearing seat 11 and the installation cavity 12 are coaxially arranged, a plurality of through holes are uniformly distributed on the small bearing seat 11 around the axis, and the distance between each through hole and the axis of the small bearing seat 11 is larger than the radius of the opening of the large bearing seat 10 installation cavity 12; the large bearing seat 10 is provided with a disk-shaped mounting part 18 extending radially outwards from the outer wall of the mounting cavity 12, and the mounting part 18 is provided with bolt holes which are arranged in one-to-one correspondence with the through holes, so that the penetrating ends of the fastening bolts 15 penetrate through the small bearing seat 11 from the corresponding through holes and then are in threaded engagement with the corresponding bolt holes on the large bearing seat 10; preferably, the through holes are equally spaced from the axis of the small bearing housing 11.

In this embodiment, the small bearing seat 11 is provided with a plugging rib 19 protruding and extending towards the large bearing seat 10, the plugging rib 19 encloses a circumference shape corresponding to the opening of the installation cavity 12, and the outer circumference side of the circumference shape plugging rib 19 is correspondingly sealed and attached to the inner wall of the opening of the installation cavity 12.

In this embodiment, the inner wall surface of the open end of the installation cavity 12 is provided with a positioning groove section 110 with increased radial distance, the diameter of the inner wall surface of the positioning groove section 110 is equal to the diameter of the outer peripheral surface of the plugging rib 19, or the inner wall surface of the plugging rib 19 is in interference fit, and the insertion end of the plugging rib 19 is in contact with the inner wall surface of the positioning groove section 110, which is close to the center side of the installation cavity 12, so as to position the insertion position of the small bearing seat 11; preferably, the outer side of the end of the plugging rib 19 is provided with a chamfer, and the inner side of the outer end surface of the positioning groove section 110 is provided with a chamfer.

In this embodiment, at least one positioning notch 111 is formed at the periphery of the small bearing seat 11, and a positioning rib matched with the positioning notch 111 is formed on the large bearing seat 10, so that the positioning rib is correspondingly inserted into the positioning notch 111 when the small bearing seat 11 is fixedly installed on the large bearing seat 10.

In the embodiment, the outer periphery of the penetrating end of the motor shaft 5 is sleeved with a coaxially arranged shaft sleeve, the shaft sleeve forms a drum shaft 6, one end of the drum shaft 6 is meshed and connected with a wheel train 8, the other end of the drum shaft 6 penetrates through a large bearing seat 10 and then is meshed and connected with a drum of the washing machine, and the outer periphery of the drum shaft 6 is in limit support with a second bearing 14; the periphery of the penetrating end of the motor shaft 5 is sleeved with an input shaft sleeve 81 coaxially arranged, one end of the input shaft sleeve 81 is meshed and connected with the wheel train 8, and the other end of the input shaft sleeve 81 penetrates through the small bearing seat 11 and then is controllably meshed or separated with the motor rotor 21 through the clutch meshing sleeve 3, and the periphery of the input shaft sleeve 81 is in limit support with the first bearing 13; the motor shaft 5 passes through the brake wheel 7 and is engaged with a wheel train 8 in the brake wheel 7.

In this embodiment, the first end of the installation cavity 12 is provided with a circle of extension ribs 112 extending along the axis of the installation cavity 12, and the inner peripheral wall of the extension ribs 112 encloses a bearing installation part for the second bearing 14 to be assembled; the inner periphery of the annular small bearing seat 11 is provided with a circle of assembling ribs 113 extending along the axis of the mounting cavity 12, and the inner peripheral wall of the assembling ribs 113 encloses a bearing mounting part for mounting the first bearing 13.

In this embodiment, the second bearing 14 includes at least two independent bearings, each of which is sequentially installed in a bearing installation portion formed around an inner periphery of an extension rib 112 provided at a first end of an installation cavity 12 of the large bearing housing 10 along an axial direction of the motor shaft 5; and/or the first bearing 13 comprises at least two mutually independent bearings, and each bearing is sequentially arranged in a bearing installation part formed around the inner periphery of the assembly rib 113 arranged on the small bearing seat 11 along the axial direction of the motor shaft 5.

Example two

As shown in fig. 1 and 3, the present embodiment describes a reduction clutch for a drum washing machine, which includes a large bearing housing 10, a mounting cavity 12 is provided on the large bearing housing 10, a mounting portion 18 extending radially outwards is provided on the outer wall of the mounting cavity 12, a brake wheel 7 provided in the mounting cavity 12 of the large bearing housing 10 and a wheel train 8 provided in the brake wheel 7, a second bearing 14 for positioning and supporting the exit end of a motor shaft 5 penetrating into the washing machine is mounted at a first end of the mounting cavity 12 in the axial direction; the second end of installation cavity 12 along the axis direction is uncovered to be set up, and open department detachable installs little bearing frame 11, little bearing frame 11 on be equipped with run through the screw hole that sets up, corresponding with big bearing frame 10 periphery installation department, be equipped with in the screw hole and supply to pry the internal thread that bolt 114 looks screw-thread engagement, pry the tip that bolt 114 stretches into the screw hole and inconsistent with big bearing frame 10's installation department 18 spacing in order to pry little bearing frame 11 and big bearing frame 10 phase separation.

Through set up the screw hole that can supply to pry the bolt installation on little bearing frame to realize on the little bearing frame screw in pry the bolt back, pry the bolt and contradict big bearing frame, and then reach the purpose that utilizes the pry bolt that stretches into little bearing frame screw hole with little bearing frame and big bearing frame quick dismantlement separation.

In this embodiment, the small bearing seat 11 is provided with a screw post 17 having a certain thickness extending in the axial direction of the motor shaft 5, and the screw post 17 is provided with a screw hole penetrating in the axial direction.

In this embodiment, one side of the small bearing seat 11 is correspondingly attached to and sealed with the open side of the large bearing seat 10, the sealed attachment portion is fixedly installed with the large bearing seat 10 through at least one fastening bolt 15 penetrating through the small bearing seat 11, the screw column 17 is arranged on the small bearing seat 11 on the side opposite to the sealed attachment surface, and the screw column 17 is arranged at the sealed attachment portion of the small bearing seat 11 and the large bearing seat 10.

In this embodiment, the large bearing seat 10 is provided with a disk-shaped mounting portion 18 extending radially outwards from the outer wall of the mounting cavity 12, and at least part of a screw hole formed in the screw column 17 is correspondingly overlapped with the disk-shaped mounting portion 18 in the axial parallel direction of the motor shaft 5, so that the end portion of the prying bolt extending into the screw hole contacts with the large bearing seat in a propping manner, and the purpose that the prying bolt prys the small bearing seat open and separates from the large bearing seat is achieved.

In this embodiment, a plurality of screw columns 17 are arranged on the periphery of the small bearing seat 11, and each screw column 17 is arranged in different radial directions of the small bearing seat 11; screw hole axes arranged on the screw posts 17 are parallel to the axis of the motor shaft 5; preferably, the screw posts 17 are arranged at the outer circumference of the small bearing housing 11 at equal angular intervals.

In this embodiment, the large bearing seat 10 is provided with a supporting platform 116 corresponding to each screw hole provided on the small bearing seat 11, the supporting platform 116 and the screw hole are correspondingly overlapped in the axial direction of the screw hole, and the outer end surface of the supporting platform 116 is a plane perpendicular to the axis of the screw hole; preferably, the end surface of the screw hole close to the large bearing seat 10 is correspondingly attached to the outer end surface of the supporting platform 116.

In the embodiment, the inner wall surface of the screw hole is provided with the internal thread, the screw hole is internally provided with the prying bolt 114 which is engaged with the thread, and the axial length of the screw rod of the prying bolt 114 is larger than that of the screw hole, so that the prying bolt extending into the screw hole can be limited and abutted with the large bearing seat, and the small bearing can be pryed; preferably, the end of the screw of the prying bolt 114 is flat, so that the contact area between the prying bolt and the large bearing seat is increased, and the prying action strength is improved.

Example III

As shown in fig. 1 and 4, in the present embodiment, there is disclosed a speed reducing clutch for a drum washing machine, which includes a large bearing housing 10, a mounting cavity 12 is provided on the large bearing housing 10, a mounting portion 18 extending radially outwardly is provided on an outer wall of the mounting cavity 12, a brake wheel 7 provided in the mounting cavity 12 of the large bearing housing 10 and a wheel train 8 provided in the brake wheel 7, and a second bearing 14 for positioning and supporting a penetrating end of a motor shaft 5 penetrating into the washing machine is mounted at a first end of the mounting cavity 12 in an axial direction; the second end of the installation cavity 12 along the axis direction is opened, a small bearing seat 11 is detachably installed at the opening, a positioning column 16 protruding and extending towards the direction of the large bearing seat 10 is arranged on the small bearing seat 11, and a positioning groove 115 matched with the positioning column 16 is arranged on the large bearing seat 10.

The positioning columns which are correspondingly inserted with the large bearing seats are arranged on the small bearing seats, so that the only assembly position between the small bearing seats and the large bearing seats is realized; and the positioning column is utilized for positioning and assembling, so that the effect of rapid and accurate positioning, buckling and mounting between the small bearing seat and the large bearing seat is achieved.

In this embodiment, one side of the small bearing seat 11 is correspondingly attached to and sealed with the open side of the large bearing seat 10, and the positioning column 16 is arranged at the sealed attachment position of the small bearing seat 11 and the large bearing seat 10.

In this embodiment, the fastening bolt 15 may be disposed on the positioning post 16, so that the fastening bolt 15 passes through the positioning post 16 and is engaged with and fixed on the large bearing seat in a threaded manner, so as to form the screw mounting structure as described in the first embodiment; the specific mode is as follows: the positioning column 16 is provided with a coaxially arranged through hole, the bottom of the positioning groove 115 is provided with a bolt hole coaxially arranged corresponding to the through hole, and the end part of the fastening bolt 15 passes through the through hole arranged on the positioning column 16 and then is in threaded engagement and fixation with the bolt hole arranged at the bottom of the positioning groove 115; preferably, the positioning column 16 is a cylindrical structure extending along the axis parallel to the motor shaft 5, and the positioning groove 115 is a cylindrical groove extending along the axis parallel to the motor shaft 5; the aperture of the bolt hole at the bottom of the positioning groove 115 is smaller than or equal to the aperture of the through hole arranged on the positioning column 16, the aperture of the through hole arranged on the positioning column 16 is smaller than or equal to the cross-section diameter of the outer peripheral wall of the positioning column 16, and the cross-section diameter of the outer peripheral wall of the positioning column 16 is smaller than or equal to the outer contour diameter of the bottom of the positioning groove 115. Therefore, the purpose that the small bearing seat is clamped and mounted on the large bearing seat by the fastening bolt is achieved by ensuring that the fastening bolt is meshed and fixed with the bolt hole formed in the positioning groove after passing through the positioning column.

In this embodiment, the prying bolt 114 may be disposed on the positioning post 16, so that the prying bolt 114 passes through the positioning post 16 and is in limited interference with the large bearing seat, so as to pry the small bearing 11 and the large bearing seat 10 to separate from each other, thereby forming a screw post structure as described in the second embodiment; the specific mode is as follows: the positioning column 16 is provided with a screw hole coaxially arranged, the bottom of the positioning groove 115 is sealed, and the end of the prying bolt 114 extends into the screw hole arranged on the positioning column 16 and is in limit contact with the bottom of the positioning groove 115 so as to pry the small bearing seat 11 and the large bearing seat 10 to be separated.

In this embodiment, a plurality of positioning columns 16 are arranged on the small bearing seat 11, and each positioning column 16 is arranged in different radial directions of the small bearing seat 11; preferably, the positioning posts 16 are arranged at the periphery of the small bearing seat 11 at equal intervals.

Example IV

As shown in fig. 1 to 5, the present embodiment describes a reduction clutch for a drum washing machine, which includes a housing 1, a brake wheel 7 is disposed in a mounting cavity 12 provided on the housing 1, a wheel train 8 disposed inside the brake wheel 7, and a motor shaft 5 engaged with a motor rotor 21 penetrates the wheel train 8 to drive a pulsator shaft and a drum shaft 6 to rotate; a clutch engagement sleeve 3 is further arranged between the shell 1 and the motor rotor 21, and the clutch engagement sleeve 3 can move along the axial direction of the motor shaft 5 under the action of a clutch driving structure, so that the clutch engagement sleeve 4 rotates in a meshed manner with the motor rotor 21 or the clutch engagement sleeve 3 is locked in a meshed manner with a clutch fixing disc 4 arranged on the shell 1.

Through install mutually independent separation and reunion meshing cover and separation and reunion fixed disk on the speed reduction clutch casing for can carry out independent setting, the purpose of independent installation respectively between the different parts of speed reduction clutch, promote speed reduction clutch's part standardization level, and then promoted speed reduction clutch's assembly efficiency greatly.

In this embodiment, the housing 1 includes a large bearing seat 10, a mounting cavity 12 is disposed on the large bearing seat 10, one end of the mounting cavity 12, which is close to the motor rotor 21 along the axial direction, is disposed in an opening, a small bearing seat 11 is detachably mounted at the opening, and the clutch fixing disc 4 is fixedly mounted on one side, which is close to the motor rotor 21, of the small bearing seat 11.

In this embodiment, the clutch fixing plate 4 and the clutch engagement sleeve 3 are coaxially sleeved on the motor shaft 5, a circle of inner ring engagement teeth 41 is provided on the inner circumference of the clutch fixing plate 4, a circle of outer ring engagement teeth 31 is provided on the outer circumference of one end of the clutch engagement sleeve 3 close to the housing 1, so that the clutch engagement sleeve 3 moves to the outer ring engagement teeth 31 to be engaged with the inner ring engagement teeth 41 under the action of the clutch driving structure.

In this embodiment, a return spring 30 is installed between the clutch fixing plate 4 and the clutch engagement sleeve 3, and one side of the clutch engagement sleeve 3, which is close to the motor rotor 21, is in limit contact with the clutch driving structure, so that the clutch engagement sleeve 3 is movably installed between the clutch fixing plate 4 and the motor rotor 21.

In this embodiment, the clutch fixing plate 4 has a circular ring structure, at least one assembly hole is arranged on the circular ring clutch fixing plate 4, a bolt hole matched with the assembly hole is arranged on the small bearing seat 11, and the bolt passes through the assembly hole and then is fastened with the bolt hole by screw thread, so that the clutch fixing plate 4 is fixedly mounted on the small bearing seat 11 by the bolt; preferably, a plurality of assembly holes are arranged on the annular clutch fixed disc 4 at equal intervals; further preferably, the fitting holes are provided at equal intervals in the center of the clutch fixing plate 4, and the diameters of the fitting holes are set to be equal.

In this embodiment, both ends of each tooth tip of the inner ring engaging teeth 41 and the outer ring engaging teeth 31 are respectively provided with circular arc chamfers so as to facilitate engagement of the clutch fixing plate 4 and the clutch engagement sleeve 3.

In this embodiment, a ring of radially protruding clamping ribs 32 is arranged on the periphery of the clutch engagement sleeve 3, one side, close to the motor rotor 21, of the clamping ribs 32 is in limiting contact with the shifting fork 9 of the clutch driving structure, and the shifting fork 9 provides limiting acting force to the clutch engagement sleeve 3 through the clamping ribs 32 in the direction of the clutch fixing disc 4, so that the clutch engagement sleeve 3 is movably assembled between the motor rotor 21 and the clutch fixing disc 4.

In this embodiment, the gear train 8 includes an input shaft sleeve 81 sleeved on the outer periphery of the motor shaft 5 and penetrating out of the housing from the center of the small bearing seat 11, a circle of external engaging teeth 811 are provided on the outer periphery of the penetrating end of the input shaft sleeve 81, a circle of internal engaging teeth 33 are provided on the inner periphery of the clutch engaging sleeve 3, and the internal engaging teeth 33 and the external engaging teeth 811 are correspondingly engaged and connected, so that the clutch engaging sleeve 3 and the input shaft sleeve 81 are engaged and fixed.

In this embodiment, the extending distance of the external engaging tooth 811 on the input shaft sleeve 81 in the axial direction of the motor shaft 5 covers the moving position of the internal engaging tooth 33 in the moving process of the clutch engaging sleeve 3, so that the internal engaging tooth 31 and the external engaging tooth 811 are always engaged and connected when the clutch engaging sleeve 3 moves along the axial direction of the motor shaft 5 under the action of the clutch driving device; preferably, the clutch engagement sleeve 3 is provided with a plurality of engagement teeth 34 protruding radially outwards near one end of the motor rotor 21, and the motor rotor 21 is provided with engagement grooves 22 which are matched and fixed with the engagement teeth 34.

Example five

As shown in fig. 1 to 5, in the present embodiment, there is described a speed reduction clutch for a drum washing machine, which includes a clutch engagement sleeve 3, the clutch engagement sleeve 3 being movable in an axial direction of a motor shaft 5 by a clutch driving structure to engage or disengage the clutch engagement sleeve 3 with or from a motor rotor 21; the clutch engagement sleeve 3 is provided with engagement teeth 34 engaged with the motor rotor 21, and an elastic pad 35 is sleeved outside the engagement teeth 34, so that the engagement teeth 34 are engaged with the motor rotor 21 through the elastic pad 35.

The elastic pad is arranged between the engaging teeth of the clutch engaging sleeve and the motor rotor, so that noise generated when the clutch engaging sleeve is engaged with the motor rotor is eliminated, vibration and noise generated when the speed reduction clutch operates are reduced, and user comfort level of the whole washing machine is effectively improved.

In this embodiment, one end of the clutch engagement sleeve 3 is provided with a plurality of engagement teeth 34 protruding radially outwards, and an elastic pad 35 is mounted on one side of each engagement tooth 34 away from the center of the clutch engagement sleeve 3 in a coating manner.

In this embodiment, the elastic pad 35 includes a ring 36 disposed along an end surface of the clutch engagement sleeve, and a plurality of coating portions 36 are protruded and extended from the ring 36 along a radial direction, and each coating portion 36 is buckled and mounted on the engagement teeth 34 in a one-to-one correspondence.

In this embodiment, a plurality of radially extending engaging ribs 23 protruding toward the clutch engagement sleeve 3 are provided on one side of the motor rotor 21 adjacent to the clutch engagement sleeve 3, and gaps between adjacent engaging ribs 23 constitute engaging grooves 22 which are engaged with corresponding engaging teeth 34 provided on the clutch engagement sleeve 3.

In this embodiment, the peripheral side of the engaging teeth 34 is covered by the elastic pad 35, so that the peripheral side of the engaging teeth 34 is in engagement contact with the inner wall of the engaging groove 22 via the elastic pad 35, so as to reduce noise generated during rotation of the clutch sleeve driven by the motor.

Example six

As shown in fig. 1 to 6, in the present embodiment, there is described a speed reducing clutch for a drum washing machine, which includes a housing 1, a clutch engagement sleeve 3 is mounted outside the housing 1, and the clutch engagement sleeve 3 is movable along an axial direction of a motor shaft 5 under a clutch driving structure to engage or disengage the clutch engagement sleeve 3 with or from a motor rotor 21; the speed reducing clutch is also provided with a position sensor 42 for detecting the position of the clutch engagement sleeve 3.

The position sensor is arranged on the speed reduction clutch so as to accurately detect the position of the clutch engagement sleeve, further timely monitor the operation fault of the speed reduction clutch, and effectively improve the operation stability and reliability of the speed reduction clutch.

In the embodiment, the clutch driving structure comprises a shifting fork 9, the middle part of the shifting fork 9 is rotatably arranged on the shell 1, the first end of the shifting fork 9 is in limit contact with the clutch engagement sleeve 3, and the second end of the shifting fork is connected with the driving unit, so that the shifting fork 9 is pulled to rotate under the action of the driving unit, and the clutch engagement sleeve 3 is driven to move along the axial direction of the motor shaft 5; the position sensor 42 detects the relative position between the fork 9 and the housing 1 to acquire the position of the clutch sleeve 3. In this embodiment, the driving unit may be configured as a stepper motor, and an output end of the stepper motor is connected to an end of the fork through a pull rope.

In the embodiment, a circle of radially protruding clamping ribs 32 are arranged on the periphery of the clutch engagement sleeve 3, one side, close to a motor rotor, of each clamping rib 32 is in limiting contact with the first end of the shifting fork 9, and the shifting fork 9 provides limiting acting force to the clutch engagement sleeve 3 in the direction close to the shell 1 through the clamping ribs 32, so that the clutch engagement sleeve 3 is movably assembled between the motor rotor 21 and the clutch fixing disc 4; preferably, a return spring 30 is further arranged between the clamping rib 32 of the clutch engagement sleeve 3 and the shell 1, and the return spring 30 provides an elastic force for the clutch engagement sleeve 3 in a direction away from the shell 1, so that the clutch engagement sleeve 3 is assembled on the speed reduction clutch under the action of the return spring 30 and the shifting fork 9.

In this embodiment, a first end of the fork 9 is provided with a section of arc-shaped connecting rib 91 extending around the periphery of the clamping rib 32 of the clutch engagement sleeve 3, two ends of the connecting rib 91 are respectively provided with a limiting rib 92 extending along the radial direction of the clutch engagement sleeve 3, and the limiting ribs 92 are respectively in limiting contact with one side of the clamping rib 32 close to the motor rotor 21; the position sensor 42 is arranged on the shell 1 corresponding to the limit rib 92 to detect the distance between the limit rib 92 and the shell 1; preferably, the center of the connecting rib 91 and the rotating shaft of the shifting fork 9 are positioned on the same vertical plane, so that the limit ribs 92 at the two ends of the connecting rib 91 are always positioned at the same horizontal height.

In this embodiment, the housing 1 includes a large bearing seat 10, a mounting cavity 12 is disposed on the large bearing seat 10, the mounting cavity 12 is disposed along an axial direction near an opening of one end of the motor rotor 21, a small bearing seat 11 is detachably mounted at the opening, and a clutch fixing disc 4 is mounted on one side of the small bearing seat 11 near the motor rotor 21; the middle part of the shifting fork 9 can rotate around the shaft and is arranged on the clutch fixed disc 4; the position sensor 42 is disposed on the clutch fixing plate 4 corresponding to the limit rib 92 to detect a relative distance between the limit rib 92 and the clutch fixing plate 4.

In this embodiment, the position sensor 42 and the limiting rib 92 are correspondingly overlapped in the parallel direction of the axis of the motor shaft 5; preferably, the limiting rib 92 has a certain extending width in the circumferential direction of the clutch engagement sleeve 3, so that the position sensor 42 is ensured to be always overlapped with at least part of the limiting rib 92 in the parallel direction of the axis of the motor shaft 5 during the moving process of the shifting fork 9.

In this embodiment, the position sensor 42 is mounted on the shift fork 9 to detect the relative distance between the shift fork 9 and the housing 1; preferably, the position sensor 42 is provided at a contact position of the fork 9 and the clutch sleeve 3.

Example seven

The embodiment introduces a drum washing machine provided with the speed reduction clutch of any one of the first to sixth embodiments, comprising a drum, wherein a pulsator is arranged in the drum, the drum is meshed with a drum shaft of the speed reduction clutch, the pulsator is meshed with a motor shaft penetrating end of the speed reduction clutch, a clutch engagement sleeve can move along the motor shaft axis direction under the action of a clutch driving structure, the clutch engagement sleeve is meshed with a motor rotor to drive the clutch engagement sleeve to rotate together with the motor rotor, and the rotation driving force of the clutch engagement sleeve is led into a wheel train driving motor shaft and the drum shaft to rotate at the same speed; or the clutch engagement sleeve is engaged with a clutch fixing disc arranged on the shell so as to lock the clutch engagement sleeve in the rotation direction of the motor shaft and guide the rotation driving force of the clutch engagement sleeve into the gear train to drive the motor shaft and the drum shaft to rotate in a differential speed.

The foregoing description is only illustrative of the preferred embodiment of the present application, and is not to be construed as limiting the application, but is to be construed as limiting the application to any simple modification, equivalent variation and variation of the above embodiments according to the technical matter of the present application without departing from the scope of the application.

Claims

1. A deceleration clutch for a drum washing machine, characterized in that: the large bearing seat is provided with an installation cavity, a second bearing is installed at a first end of the installation cavity along the axial direction, a second end of the installation cavity is arranged in an opening way, a small bearing seat is detachably installed at the opening part, and a first bearing is installed on the small bearing seat;

the small bearing seat is provided with a splicing rib protruding and extending towards the direction of the large bearing seat, the inner wall surface of the open end of the installation cavity is provided with a positioning groove section with increased radial distance, and the inner wall surface of the positioning groove section is in interference fit with the outer peripheral surface of the splicing rib;

the small bearing seat is provided with a positioning column extending in a protruding way towards the direction of the large bearing seat, the large bearing seat is provided with a positioning groove matched with the positioning column, and the positioning column is inserted in the positioning groove;

one side of the small bearing seat is correspondingly attached and sealed with the open side of the large bearing seat, and the sealed attaching part is fixedly installed by at least one fastening bolt which sequentially penetrates through the small bearing seat and the large bearing seat; the positioning column is arranged at the sealing joint of the small bearing seat and the large bearing seat;

the small bearing seat and the large bearing seat are fixed through fastening bolts: at least part of the positioning columns are provided with coaxially arranged through holes, the bottoms of the corresponding positioning grooves are provided with bolt holes coaxially arranged corresponding to the through holes, and the end parts of the fastening bolts penetrate through the through holes arranged on the positioning columns and are in threaded engagement and fixation with the bolt holes arranged at the bottoms of the positioning grooves;

at least part of the positioning posts are provided with screw holes which are coaxially arranged, the bottoms of the corresponding positioning slots are sealed, and the ends of the prying bolts extend into the screw holes arranged on the positioning posts and are in limit collision with the bottoms of the positioning slots so as to pry the small bearing seat and the large bearing seat to be separated.

2. The reduction clutch for a drum washing machine according to claim 1, wherein the small bearing seat is of an annular structure with the outer peripheral diameter larger than the diameter of the opening of the installation cavity of the large bearing seat, the small bearing seat and the installation cavity are coaxially arranged, a plurality of through holes are uniformly distributed on the small bearing seat around the axis, and the distance between each through hole and the axis of the small bearing seat is larger than the radius of the opening of the installation cavity of the large bearing seat; the large bearing seat is provided with a disk-shaped mounting part which radially extends outwards from the outer wall of the mounting cavity, and the mounting part is provided with bolt holes which are arranged in one-to-one correspondence with the through holes, so that the penetrating ends of the fastening bolts penetrate through the small bearing seat from the corresponding through holes and then are in threaded engagement with the corresponding bolt holes on the large bearing seat.

3. The reduction clutch for drum washing machine according to claim 2, wherein the distance between each through hole and the shaft center of the small bearing housing is equal.

4. A reduction clutch for a drum washing machine according to claim 3, wherein the insertion rib is formed in a circumferential shape corresponding to the opening of the installation cavity, and the outer circumferential side of the circumferential insertion rib is in sealing engagement with the inner wall of the opening of the installation cavity.

5. The reduction clutch for a drum washing machine according to claim 1, wherein the insertion end of the insertion rib is brought into contact with an inner end surface of the positioning groove section near the center side of the installation cavity to position the insertion position of the small bearing housing.

6. The reduction clutch for a drum washing machine according to claim 5, wherein the outer side of the end portion of the insertion rib is provided with a chamfer, and the inner side of the outer end surface of the positioning groove section is provided with a chamfer.

7. A reduction clutch for a drum washing machine according to any one of claims 1 to 6, wherein at least one positioning notch is provided at the outer periphery of the small bearing housing, and a positioning rib matched with the positioning notch is provided on the large bearing housing, so that the positioning rib is inserted into the positioning notch when the small bearing housing is fixedly mounted on the large bearing housing.

8. The reduction clutch for a drum washing machine according to any one of claims 1 to 6, wherein a shaft sleeve coaxially provided around a shaft penetrating end of the motor shaft to constitute a drum shaft, one end of the drum shaft is engaged with the motor shaft through a gear train, the other end of the drum shaft is engaged with a drum of the washing machine after passing through the large bearing housing, and the outer circumference of the drum shaft is supported in a limited manner with the second bearing.

9. A reduction clutch for a drum washing machine according to any one of claims 3 to 6, wherein the first end of the installation cavity is provided with a circle of extension ribs extending along the axis of the installation cavity, and the inner peripheral wall of the extension ribs encloses a bearing installation part for the installation of the second bearing; the inner periphery of the annular small bearing seat is provided with a circle of assembly ribs extending along the axis of the installation cavity, and the inner peripheral wall of the assembly ribs encloses a bearing installation part for the assembly of the first bearing.

10. The reduction clutch for a drum washing machine as claimed in any one of claims 3 to 6, wherein the second bearing comprises at least two bearings independent of each other, each bearing being sequentially installed in the bearing installation part at the first end of the large bearing housing installation cavity in the axial direction of the motor shaft;

and/or the first bearing comprises at least two mutually independent bearings, and each bearing is sequentially arranged in a bearing installation part formed around the inner periphery of the small bearing seat along the axial direction of the motor shaft.

11. A drum washing machine equipped with a reduction clutch according to any one of claims 1 to 10, characterized in that: the device comprises a roller, wherein a pulsator is arranged in the roller, the roller is meshed with a roller shaft of a speed reduction clutch, and the pulsator is meshed with a motor shaft penetrating end of the speed reduction clutch.