Speed reducer for washing equipment and washing equipment

Abstract

The speed reducer comprises an input shaft, an output shaft and a transmission part, the input shaft and the output shaft are arranged at the two axial ends of the transmission part, and the transmission part comprises a first planetary structure and a second planetary structure which are arranged into an upper layer and a lower layer; the gear ring structure is sleeved with the first planetary structure and the second planetary structure at the same time from the peripheral side; the input shaft is connected with the first planetary structure and the second planetary structure in series along the central axis, and the output shaft is inserted into the first planetary structure and the gear ring structure in the axial direction to form transmission connection. According to the planetary gear train, the two planetary gear trains are independent modules and can be simply and conveniently installed in one gear ring structure, the difficulty of the assembling procedure is reduced, the input shaft is provided with the center wheel meshed with the planetary structures and is connected with the two planetary structures in series, and the output shaft is arranged at the upper ends of the first planetary structure and the gear ring structure; all components in the speed reducer are sequentially arranged in the axial direction, and mounting or dismounting can be completed through axial movement.

Description

Technical Field

[0001] The invention belongs to the technical field of washing equipment, and in particular relates to a reducer for washing equipment and the washing equipment. Background Art

[0002] In daily life, washing equipment for washing clothes has become a kind of household appliance that people use most frequently. In the prior art, washing equipment that can perform double-rubbing washing is most recognized and respected by people and has become the mainstream model on the market.

[0003] The core of the washing machine to achieve double-rubbing washing is to convert the single-axis unidirectional output of the motor output shaft into power capable of dual-axis bidirectional or dual-axis unidirectional output through a planetary reducer. Thus, the inner barrel and the impeller of the washing machine are driven to move respectively by the planetary reducer.

[0004] However, in the planetary reducers currently on the market, the upper and lower planetary gear trains are separately provided with inner gear rings, the upper planet carrier is connected to the lower inner gear ring, the lower planet carrier is connected to the impeller shaft, the upper inner gear ring is connected to the inner barrel shaft, and the lower sun gear is connected to the input shaft. In such a planetary reducer, the upper and lower planetary gear trains inside are staggered and the layout is complex, resulting in high positioning requirements between the various components in the planetary gear train, unnecessarily increasing the manufacturing accuracy of the components, and increasing the difficulty of assembling the various parts in the planetary reducer, reducing the qualified rate of the planetary reducer.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The object of the present invention is to provide a reducer for washing equipment, so as to optimize the distribution structure of each planetary gear train in the planetary reducer and reduce the difficulty of assembly and the processing accuracy of each component.

[0007] Another object of the present invention is to provide a washing device using the above-mentioned reducer, so as to achieve the purpose of reducing the manufacturing cost of the washing device, improving the ratio of good operation of the whole washing device, and reducing the operating noise of the washing device.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] A speed reducer for washing equipment, comprising an input shaft, an output shaft and a transmission part, wherein the input shaft and the output shaft are arranged at two axial ends of the transmission part, and the transmission part comprises a first planetary structure and a second planetary structure arranged in upper and lower layers, and a gear ring structure that is sleeved with the first and second planetary structures from the outer peripheral side;

[0010] The input shaft is connected in series with the first and second planetary structures along the central axis, and the output shaft is inserted into the first planetary structure and the ring gear structure along the axial direction to form a transmission connection.

[0011] Furthermore, the gear ring structure includes a cylindrical inner gear ring and a circular plate-shaped tooth end cover. The inner gear ring is connected to the tooth end cover at one axial end and is open at the other end. The outer periphery of the tooth end cover is connected to the inner gear ring and the center is connected to the output shaft.

[0012] Furthermore, the first planetary structure includes an upper planetary carrier cover and an upper planetary carrier connected along the axial interval, and a first connecting port is opened in the center of the upper planetary carrier cover for plugging the output shaft; a second connecting port is opened in the center of the upper planetary carrier and passes through its two end surfaces for transmission connection with the second planetary structure.

[0013] Furthermore, the first planetary structure further includes a plurality of upper planetary wheels, which are located at the interval between the upper planet carrier cover and the upper planet carrier and are dispersedly arranged on a circumference concentric with the upper planet carrier cover.

[0014] Furthermore, the first planetary structure also includes an upper planetary shaft, and a plurality of recessed holes distributed on the same circumference are opened on the opposite end faces of the upper planetary carrier cover and the upper planetary carrier, one end of the upper planetary shaft is inserted into the recessed hole, and the other end abuts against the upper planetary carrier, and the upper planetary wheel is rotatably sleeved on the upper planetary shaft.

[0015] Furthermore, the second planetary structure comprises a lower planetary carrier cover and a lower planetary carrier connected in an axial direction at intervals, the lower planetary carrier cover is annular and abuts against the upper planetary carrier at an end surface;

[0016] The transmission part also includes a transmission wheel, one end of which is arranged at the center of the second planetary structure, and the other end of which passes through the ring hole at the center of the lower planetary carrier cover and is plugged and connected with the second connecting port.

[0017] Further, the input shaft comprises an input main shaft, one end of which is provided with a driving gear that can mesh with the upper planetary gear;

[0018] The transmission wheel is provided with a through hole along its central axis, the other end of the input main shaft passes through the lower planetary carrier cover along the through hole and passes through the lower planetary carrier, and the transmission wheel can rotate freely around the input main shaft;

[0019] The driving gear is located on the transmission wheel and is meshedly connected with the upper planetary gear.

[0020] Furthermore, a hollow shaft coinciding with the central axis is extended from the end surface of the lower planetary carrier away from the lower planetary carrier cover, and the end head of the other end of the input main shaft protrudes from the hollow shaft.

[0021] Furthermore, the output shaft includes a impeller shaft and an inner barrel shaft, the inner barrel shaft is plugged into the gear ring structure at its end, the inner barrel shaft is provided with a center hole axially passing through both ends, the impeller shaft can be relatively rotatably sleeved in the center hole of the inner barrel shaft and plugged into the upper planetary carrier cover.

[0022] The present invention also provides a washing device using the above-mentioned reducer, comprising: an inner tub connected to the output shaft; and a pulsator connected to one end of the output shaft penetrating into the inner tub.

[0023] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0024] 1. The first planetary structure and the second planetary structure are arranged as independent modules, so that the two can be quickly and easily stacked in a common ring gear structure to assemble the main frame of the planetary reducer, wherein the input shaft connects the two planetary structures in series from the center downward and is provided with central wheels of two planetary gear trains, and the output shaft is connected with the upper ends of the first planetary structure and the ring gear structure at its lower end, so that the various parts in the reducer can be installed or disassembled through axial movement, thereby greatly reducing the difficulty of assembling the reducer and reducing the requirements for processing accuracy of each component.

[0025] 2. The gear ring structure is configured as an inner gear ring and a gear end cover, which greatly reduces the manufacturing difficulty and processing accuracy of the gear ring structure, and also makes the assembly of the gear ring structure with the first planetary structure and the second planetary structure more convenient and simple.

[0026] 3. The first planetary structure is set as a structure composed of an upper planetary carrier cover and an upper planetary carrier, and the difficulty of the manufacturing process of the upper planetary carrier cover and the upper planetary carrier is reduced, so that they can be mass-produced. The advantage of mass production is used to significantly reduce the production cost, thereby greatly reducing the difficulty of assembling the first planetary gear system and increasing the speed of assembly, generating huge economic benefits.

[0027] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0029] Figure 1 is a schematic diagram of a reducer for washing equipment in the present invention;

[0030] Figure 2 It is a schematic diagram of the assembly of a reducer for washing equipment in the present invention;

[0031] Figure 3 It is a schematic diagram of the assembly of another reducer for washing equipment in the present invention.

[0032] Among them: 100, input shaft; 110, input main shaft; 111, driving gear; 200, output shaft; 210, impeller shaft; 220, inner barrel shaft; 221, center hole; 222, shaft shoulder; 300, transmission part; 310, first planetary structure; 311, upper planetary carrier cover; 312, first connection port; 313, concave hole; 314, upper planetary carrier; 315, second connection port; 316, upper planetary gear; 317, upper planetary shaft; 320, second planetary structure; 321, lower planetary carrier cover ; 322, lower planetary carrier; 323, hollow shaft; 400, gear ring structure; 410, inner gear ring; 420, gear end cover; 421, spline hole; 500, transmission wheel; 510, through hole; 600, spacer structure; 610, planetary carrier gasket; 620, center gasket; 630, stop plate; 640, anti-jump pad; 700, inner shell; 710, lower end face; 720, upper end face; 721, neck shaft; 722, opening; 810, upper outer shell; 820, lower outer shell; 830, sink groove.

[0033] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "contacted", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be 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.

[0037] In the present invention, "washing equipment" refers to a general term for a type of household appliances that can perform washing, dehydration, drying and other programs, such as washing machines, integrated washing and drying machines, etc.

[0038] like Figures 1 to 3 As shown, an embodiment of the present invention introduces a reducer for washing equipment. The reducer includes an input shaft 100, an output shaft 200 and a transmission part 300. The transmission part 300 is a two-stage planetary gear train structure, and the input shaft 100 and the output shaft 200 are arranged at both ends of the axial direction of the transmission part 300.

[0039] In addition, the two planetary gear trains in the transmission part 300 share a ring gear structure 400. Figure 1 and Figure 2 As shown, the driving gear 111 on the input shaft 100 and the ring gear structure 400 , the upper planetary gear 316 in the first planetary structure 310 , the upper planetary shaft 317 , the upper planetary carrier cover 311 and the upper planetary carrier 314 together form a first planetary gear train.

[0040] Among them, the driving gear 111 is meshed with the upper planetary gear 316, and the upper planetary gear 316 is meshed with the ring gear structure 400. The upper planetary carrier cover 311 and the upper planetary carrier 314 are combined with each other to form the planetary carrier of the first planetary gear system. In addition, the output shaft 200 includes a pulsator shaft 210 and an inner barrel shaft 220 that are overlapped and sleeved together. The inner barrel shaft 220 is set to be hollow along its central axis, and the pulsator shaft 210 is concentrically sleeved in the inner barrel shaft 220.

[0041] In particular, if Figure 1 and Figure 2 As shown, a transmission wheel 500 is serially connected to the input shaft 100. The transmission wheel 500, the ring gear structure 400, the lower planetary gear in the second planetary structure 320, the lower planetary shaft, the lower planetary carrier cover 321 and the lower planetary carrier 322 together form a second planetary gear system.

[0042] The transmission gear meshes with the lower planetary gear, and the lower planetary gear meshes with the ring gear structure 400. The lower planetary carrier cover 321 and the lower planetary carrier 322 are combined to form the planetary carrier of the second planetary gear train. Figure 3As shown, the transmission gear is also plugged into and coupled with the second connection port 315 of the upper planet carrier 314 , so that the transmission gear is driven by the upper planet carrier 314 to rotate synchronously.

[0043] In the reducer, the impeller shaft 210 is connected to the upper planet carrier cover 311, and the inner barrel shaft 220 is connected to the ring gear structure 400; the input shaft 100 includes an input main shaft 110 with a driving gear 111 at the end. The input main shaft 110 passes through the center of the lower planet carrier 322 along the through hole 510 of the transmission wheel 500 with the other end opposite to the driving gear 111.

[0044] Embodiment 1

[0045] like Figures 1 to 3 As shown, an embodiment of the present invention introduces a reducer for washing equipment with lower manufacturing cost and simpler assembly process.

[0046] The reducer comprises an input shaft 100, an output shaft 200 and a transmission part 300. The transmission part 300 is a two-stage planetary gear train structure, and the input shaft 100 and the output shaft 200 are arranged at two ends of the transmission part 300 in the axial direction.

[0047] In the reducer, the impeller shaft 210 is connected to the upper planet carrier cover 311, and the inner barrel shaft 220 is connected to the ring gear structure 400; the input shaft 100 includes an input main shaft 110 with a driving gear 111 at the end. The input main shaft 110 passes through the center of the lower planet carrier 322 along the through hole 510 of the transmission wheel 500 with the other end opposite to the driving gear 111.

[0048] like Figure 2 As shown, the transmission part 300 includes a first planetary structure 310 and a second planetary structure 320 arranged in upper and lower layers, and a ring gear structure 400 that is simultaneously sleeved with the two planetary structures from the outer circumference side.

[0049] The input shaft 100 is connected in series with two planetary structures along the central axis, and the output shaft 200 is plug-in-combined with the first planetary structure 310 and the ring gear structure 400 along the axial direction.

[0050] In this embodiment, the first planetary structure 310 and the second planetary structure 320 are arranged as independent modules, so that the two can be quickly and easily stacked in a common ring gear structure 400 to assemble the main frame of the planetary reducer, wherein the input shaft 100 connects the two planetary structures in series from the center downward and is provided with center wheels of two planetary gear systems, and the output shaft 200 is connected with the upper ends of the first planetary structure 310 and the ring gear structure 400 at its lower end, so that the various parts in the reducer can be installed or disassembled through axial movement, thereby greatly reducing the difficulty of assembling the reducer and reducing the requirements for processing accuracy of each component.

[0051] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, in order to reduce the precision and process difficulty of parts processing, a gear ring structure 400 that is easy to process and assemble is introduced.

[0052] The gear ring structure 400 can be configured as a component assembled by splicing a plurality of parts. Specifically, the gear ring structure 400 includes an inner gear ring 410 in a circular tube shape and a gear end cover 420 in a circular plate shape.

[0053] The inner gear ring 410 is provided with teeth extending in the axial direction, and the teeth are evenly distributed on the inner circumference. The inner gear ring 410 is connected to the tooth end cover 420 at one axial end and is open at the other end. The first planetary structure 310 and the second planetary structure 320 are inserted into the gear ring structure 400 from the open end of the inner gear ring 410.

[0054] In particular, the outer periphery of the tooth end cover 420 is further provided with teeth matching and connected with the inner gear ring 410. The center of the tooth end cover 420 is provided with teeth connected with the output shaft 200.

[0055] In this embodiment, the ring gear structure 400 is configured as an inner ring gear 410 and a gear end cover 420, which greatly reduces the manufacturing difficulty and processing accuracy of the ring gear structure 400, and also enables the assembly of the ring gear structure 400 with the first planetary structure 310 and the second planetary structure 320 to be more convenient and simple.

[0056] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, a first planetary structure 310 capable of rapid assembly is introduced.

[0057] In order to reduce the manufacturing cost of the transmission part 300 and improve the processing speed, the first planetary structure 310 is configured to be assembled from a plurality of simple parts. Specifically, the first planetary structure 310 includes an upper planetary carrier cover 311 and an upper planetary carrier 314 connected in an axial direction at intervals.

[0058] At the same time, a first connection port 312 is provided at the center of the upper planet carrier cover 311 for plugging the output shaft 200. The circumferential surface of the first connection port 312 is provided with a spline, a thread or a tooth extending in the axial direction. The spline and the tooth are evenly distributed on the circumference. Correspondingly, the end of the output shaft 200 is also provided with a spline, a thread or a tooth matching with the first connection port 312.

[0059] Correspondingly, the center of the upper planet carrier 314 is provided with a second connection port 315 that passes through both end surfaces thereof, for transmission connection with the second planet structure 320. The circumferential surface of the second connection port 315 is provided with a spline, a thread, or a tooth extending in the axial direction. The spline and the tooth are evenly distributed on the circumference. Correspondingly, the outer circumference of the transmission wheel 500 is also provided with a spline, a thread, or a tooth that matches with the first connection port 312.

[0060] In this embodiment, the first planetary structure 310 is configured as a structure composed of an upper planetary carrier cover 311 and an upper planetary carrier 314, and the difficulty of the manufacturing process of the upper planetary carrier cover 311 and the upper planetary carrier 314 is reduced so that they can be mass-produced. The advantage of mass production is used to significantly reduce the production cost, thereby greatly reducing the difficulty of assembling the first planetary gear system and increasing the speed of assembly, resulting in huge economic benefits.

[0061] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, a first planetary structure 310 with better structure and more convenient assembly is introduced.

[0062] The first planet structure 310 further includes a plurality of upper planetary wheels 316. In order to make the planetary wheels movably connected to the planetary carrier also be installed simply and conveniently, the upper planetary wheels 316 are arranged at the interval between the upper planetary carrier cover 311 and the upper planetary carrier 314. The plurality of upper planetary wheels 316 are rotatably and dispersedly arranged on a circumference concentric with the upper planetary carrier cover 311.

[0063] like Figure 3 As shown, in another embodiment of the present invention, a structure in which an upper planetary gear 316 is spliced ​​with a planetary carrier is introduced.

[0064] In order to adapt to the assembly method of the upper planet carrier cover 311 and the upper planet carrier 314 so that the upper planetary gear 316 can be quickly assembled with them into the first planetary structure 310, the first planetary structure 310 is also provided with an upper planetary shaft 317 clamped between the upper planet carrier cover 311 and the upper planet carrier 314.

[0065] Specifically, a plurality of concave holes 313 distributed on the same circumference are provided on an end surface of the upper planet carrier cover 311, which is opposite to the upper planet carrier 314. One end of the upper planet shaft 317 is inserted into the concave hole 313, and the other end abuts against the upper planet carrier 314, and the upper planet wheel 316 is rotatably sleeved on the upper planet shaft 317.

[0066] Alternatively, a plurality of concave holes 313 distributed on the same circumference are provided on an end surface of the upper planet carrier 314 opposite to the upper planet carrier cover 311. One end of the upper planet shaft 317 is inserted into the concave hole 313 and the other end abuts against the upper planet carrier cover 311, and the upper planet wheel 316 is rotatably sleeved on the upper planet shaft 317.

[0067] In this embodiment, by providing a plurality of upper planetary wheels 316 rotatably connected to the upper planetary shaft 317 and making them evenly distributed along the circumferential direction, the production cost of the first planetary structure 310 is made greater and cheaper, and the assembled first planetary structure 310 is made more stable and suitable for application in mass-produced household appliances.

[0068] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, a second planetary structure 320 capable of rapid assembly is introduced.

[0069] The second planetary structure 320 includes a lower planetary carrier cover 321 and a lower planetary carrier 322 connected in an axial direction. The end surfaces of the lower planetary carrier cover 321 and the lower planetary carrier 322 are parallel to each other, and a plurality of rotatable lower planetary gears are arranged between the two. The plurality of lower planetary gears are evenly distributed on a circumference concentric with the lower planetary carrier cover 321 or the lower planetary carrier 322, and are kneaded with the transmission wheel 500.

[0070] The first planet structure 310 and the second planet structure 320 are arranged in the axial direction and sleeved in the same gear ring structure 400. The lower planet carrier cover 321 is annular and abuts against the upper planet carrier 314 at its end surface.

[0071] In particular, the transmission part 300 further includes a transmission wheel 500 . One end of the transmission wheel 500 is arranged at the center of the second planetary structure 320 , and the other end of the transmission wheel 500 passes through the annular hole at the center of the lower planetary carrier cover 321 and is plugged into the second connection port 315 .

[0072] In this embodiment, the second planetary structure 320 is configured as a structure spliced ​​by the lower planetary carrier cover 321 and the lower planetary carrier 322, and the difficulty of the manufacturing process of the lower planetary carrier cover 321 and the lower planetary carrier 322 is reduced so that they can be mass-produced. The advantage of mass production is used to significantly reduce the production cost, thereby greatly reducing the difficulty of assembling the second planetary gear system and increasing the speed of assembly, resulting in huge economic benefits.

[0073] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, an input shaft 100 is introduced which is more convenient to be connected to the planetary gear train.

[0074] The input shaft 100 is cantilevered outward from the center of the second planetary structure 320 and includes an input main shaft 110 that penetrates the second planetary structure 320. In addition, a driving gear 111 that can mesh with the upper planetary gear 316 is provided at the end of the input main shaft 110.

[0075] The transmission wheel 500 is provided with a through hole 510 along its central axis. The other end of the input main shaft 110 passes through the lower planet carrier cover 321 along the through hole 510 and passes through the lower planet carrier 322 .

[0076] In particular, the transmission wheel 500 is rotatably sleeved on the input main shaft 110 and abuts against the driving gear 111 at one end of the input main shaft 110. In the transmission part 300, the driving gear 111 is located on the transmission wheel 500 and meshed with the upper planetary gear 316.

[0077] In this embodiment, the driving gear 111 at one end of the input main shaft 110 is configured to drive the sun gear of the first planetary gear system. At the same time, the input main shaft 110 is also configured to pass through the second planetary gear system, so that the input shaft 100 can be more conveniently assembled with the transmission part 300, and the accuracy and stability of the connection between the input shaft 100 and the transmission part 300 are improved, which can reduce the wear of the reducer during operation.

[0078] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, an input shaft 100 capable of controlling the output form of the transmission part 300 is introduced.

[0079] In the washing device, the inner tub and the pulsator are connected to the output shaft 200 of the reducer and driven by the reducer to rotate. In order to conveniently adjust the rotation mode of the inner tub and the pulsator, such as: the pulsator and the inner tub rotate in the same direction and at the same speed, and the pulsator and the inner tub rotate in the opposite direction, a hollow shaft 323 coinciding with its central axis is extended from the middle of the end surface of the lower planetary frame 322. By controlling the hollow shaft 323 to be fixed or rotate synchronously with the input main shaft 110, the pulsator shaft 210 and the inner tub shaft 220 of the output shaft 200 can be adjusted to switch between the two forms of reverse rotation and co-rotation.

[0080] Specifically, the input shaft 100 includes an input countershaft and a clutch. The input countershaft is fixedly sleeved on the end of the input main shaft 110 passing through the hollow shaft 323. The clutch is sleeved on the input main shaft 110 and can lock the hollow shaft 323 and the input countershaft into one.

[0081] In this embodiment, the coupling and disengagement of the hollow shaft 323 and the input secondary shaft are controlled by the clutch. When the washing device washes the clothes in the inner tub, the reducer is controlled to drive the inner tub and the pulsator to rotate in opposite directions, thereby forming a rubbing effect on the clothes and improving the washing efficiency. When the washing device dehydrates the clothes in the inner tub, the reducer is controlled to drive the inner tub and the pulsator to rotate in the same direction, thereby avoiding the consumption of the transmission of each level in the reducer, making the dehydration speed of the inner tub the same as the output speed of the motor, and improving the dehydration efficiency.

[0082] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, an output shaft 200 that is more conveniently connected to the transmission part 300 is introduced.

[0083] The output shaft 200 includes a pulsator shaft 210 and an inner barrel shaft 220. The inner barrel shaft 220 is provided with a center hole 221 that penetrates through both ends along the axial direction, and the pulsator shaft 210 is sleeved in the center hole 221 of the inner barrel shaft 220 so as to be relatively rotatable.

[0084] In addition, a spline or a tooth structure is provided on the outer circumference of one end of the inner barrel shaft 220. The gear ring structure 400 is assembled by splicing the inner gear ring 410 and the tooth end cover 420. In addition, the inner gear ring 410 is in the shape of a circular tube, and the tooth end cover 420 is in the shape of a circular plate. The inner gear ring 410 is provided with teeth extending in the axial direction, and the teeth are evenly distributed on the inner circumference.

[0085] The outer periphery of the tooth end cover 420 is also provided with teeth matching and connected to the inner gear ring 410. The center of the tooth end cover 420 is provided with a spline hole 421 connected to the output shaft 200. The spline hole 421 passes through both end surfaces of the tooth end cover 420 and has splines or teeth evenly arranged along its inner circumference. The diameter of the spline hole 421 is greater than the diameter of the first connection port 312.

[0086] Thus, when the inner barrel shaft 220 is connected to the gear ring structure 400 , the end of the inner barrel shaft 220 can be plugged into and combined with the gear ring structure 400 .

[0087] In addition, a spline or a tooth structure is provided on the outer circumferential surface of one end of the impeller shaft 210. A first connection port 312 is provided at the center of the upper planet carrier cover 311 for plugging the output shaft 200. A spline, a thread or a tooth extending along the axial direction is provided on the circumferential surface of the first connection port 312. The impeller shaft 210 can be relatively rotatably sleeved in the center hole 221 of the inner barrel shaft 220 and plugged and combined with the upper planet carrier cover 311.

[0088] In this embodiment, by setting a spline hole 421 on the end face of the ring gear structure 400 and setting a first connecting port 312 on the end face of the upper planetary carrier cover 311, the output shaft 200 can be directly inserted into the transmission part 300 from the outside of the transmission part 300 in the axial direction, and combined with the transmission part 300 to form a reducer as a whole, which makes the installation and disassembly of the reducer faster and reduces the maintenance cost.

[0089] The present invention also provides a washing device using the reducer in the above embodiment. The washing device includes a pulsator and an inner tub.

[0090] Specifically, the impeller is located at the bottom of the inner barrel, and the central axis of the impeller coincides with the central axis of the inner barrel. The reducer is fixed below the inner barrel, and its inner barrel shaft 220 is fixedly connected to the bottom wall of the inner barrel. In addition, the impeller shaft 210 of the reducer passes through the bottom wall of the inner barrel and is plugged into the center of the bottom surface of the impeller.

[0091] In addition, the impeller and the inner barrel are independently arranged and can rotate around their central axes independently.

[0092] In this embodiment, the washing equipment adopts the reducer of the present invention, which not only reduces the manufacturing cost of the washing equipment and the total manufacturing time of the washing equipment, but also improves the overall quality and maintenance convenience of the washing equipment. At the same time, the noise during the operation of the washing equipment is greatly reduced due to the stable quality of the reducer.

[0093] Embodiment 2

[0094] like Figure 1 As shown, in one embodiment of the present invention, a reducer is introduced in which a spacer structure 600 is filled in the axial gap.

[0095] The reducer includes an input shaft 100, an output shaft 200 and a transmission part 300. The transmission part 300 is a two-stage planetary gear train structure. The transmission part 300 includes a spacer structure 600, a first planetary structure 310 and a second planetary structure 320 arranged in layers along the axial direction, and a ring gear structure 400 sleeved on the outer sides of the two planetary structures.

[0096] Specifically, the first planetary structure 310 and the second planetary structure 320 are arranged in two layers along the axial direction and are sleeved in the ring gear structure 400. In particular, the first planetary structure 310 includes an upper planet carrier cover 311 and an upper planet carrier 314; the second planetary structure 320 includes a lower planet carrier cover 321 and a lower planet carrier 322; the ring gear structure 400 includes an inner ring gear 410 and a tooth end cover 420, and the tooth end cover 420 is located at one end of the inner ring gear 410. The outer shape of the ring gear structure 400 is a cylinder with one end open and the other end closed. The tooth end cover 420 forms the closed end of the ring gear structure 400.

[0097] Furthermore, since the first planetary structure 310, the second planetary structure 320, the ring gear structure 400, the driving gear 111 and the transmission gear each rotate independently when the transmission part 300 is running, friction caused by reverse rotation or rotation at different speeds may be generated between the upper planetary carrier cover 311 and the tooth end cover 420, between the upper planetary carrier 314 and the lower planetary carrier cover 321, and between the driving gear 111 and the transmission gear.

[0098] In order to reduce or even avoid the wear of adjacent components, the spacer structure 600 is clamped between any two adjacent end surfaces that can produce reverse rotation.

[0099] In this embodiment, the various planetary gear trains in the reducer are arranged as a clearly layered structure, which can be stacked and connected in series along the axial direction, and by arranging the spacer structure 600 at intervals between adjacent components, the axial gaps between the various components in the reducer can be filled, reducing the axial movement or even jumping of the components during rotation, and avoiding friction between the adjacent end faces of two parts, thereby reducing abnormal wear of the components in the reducer, while reducing the operating noise of the reducer and increasing its service life.

[0100] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, a spacer structure 600 disposed between planetary gear trains is introduced.

[0101] The spacer structure 600 includes a planet carrier gasket 610 . The planet carrier gasket 610 is configured as a circular ring-shaped thin sheet and is clamped between the upper planet carrier 314 of the first planet structure 310 and the lower planet carrier cover 321 of the second planet structure 320 .

[0102] The center of the upper planet carrier 314 is provided with a second connection port 315 penetrating through both end surfaces of the upper planet carrier 314. The inner ring aperture of the planet carrier gasket 610 is larger than the diameter of the second connection port 315. Moreover, the planet carrier gasket 610 is coaxial with the upper planet carrier 314.

[0103] In this embodiment, by providing a planet carrier gasket 610 between the first planet structure 310 and the second planet structure 320, the gap between the two planet structures can be eliminated, and the vibration of the gears in the planetary gear train when rotating at high speed can be avoided. At the same time, friction between the adjacent end surfaces of the first planet structure 310 and the second planet structure 320 can be avoided, thereby improving the smoothness of the reducer operation.

[0104] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, an output shaft 200 that is more conveniently connected to the transmission part 300 is introduced.

[0105] The transmission part 300 further includes a transmission wheel 500 with a through hole 510 at the center. One end of the transmission wheel 500 is disposed at the center of the second planetary structure 320 , and the other end protrudes from the center hole 221 of the lower planetary carrier cover 321 and is plugged into the second connection port 315 .

[0106] The input shaft 100 includes an input main shaft 110 with a driving gear 111 at one end. The driving gear 111 is arranged at the center of the first planetary structure 310. The input main shaft 110 is rotatably inserted into the through hole 510 of the transmission wheel 500 and can rotate relative to the transmission wheel 500.

[0107] In particular, the spacer structure 600 includes a central spacer 620 . The central spacer 620 is configured as a circular ring-shaped thin sheet, which is sleeved on the input main shaft 110 and clamped between the driving gear 111 and the transmission wheel 500 .

[0108] In this embodiment, the driving gear 111 and the transmission wheel 500 are connected in series on the same rotating shaft, and the end faces of the two are in contact with each other. Therefore, the central gasket 620 is clamped between the end faces of the two to isolate and lubricate the driving tooth path and the transmission gear, which can reduce the gap between the two parts to improve the balance during rotation and avoid mutual wear between the two parts to extend the service life.

[0109] like Figure 1 As shown, in one embodiment of the present invention, a spacer structure 600 is introduced to prevent the output shaft 200 from contacting the planet carrier.

[0110] The gear ring structure 400 can be configured as a component assembled by splicing multiple parts. Specifically, the gear ring structure 400 includes a cylindrical inner gear ring 410 and a disc-shaped tooth end cover 420. The center of the tooth end cover 420 is provided with a spline hole 421 penetrating through both end surfaces.

[0111] In the transmission part 300, the gear end cover 420 is arranged adjacent to the upper planet carrier cover 311 of the first planetary structure 310. A first connection port 312 is provided at the center of the upper planet carrier cover 311, so that the output shaft 200 can be directly inserted into the transmission part 300 from the outside of the transmission part 300 in the axial direction, and combined with the transmission part 300 to form a whole reducer.

[0112] The spacer structure 600 includes a stopper 630 disposed between the gear end cover 420 and the upper planet carrier cover 311. The stopper 630 is annular and has an inner diameter greater than the diameter of the first connection port 312 and an outer diameter greater than the diameter of the spline hole 421.

[0113] In this embodiment, the stop plate 630 is arranged between the tooth end cover 420 and the upper planetary carrier cover 311, and the end face of the stop plate 630 is at least partially contained in the spline hole 421, so as to avoid the output shaft 200 directly hitting the tooth end cover 420 when inserted into the spline hole 421, thereby positioning the output shaft 200 and preventing the tooth end cover 420 and the output shaft 200 from wearing each other, thereby extending the service life of the reducer.

[0114] like Figure 1 As shown, in one embodiment of the present invention, a structure capable of maintaining the axial stability of the transmission part 300 is introduced.

[0115] The reducer also includes an inner shell 700 with a receiving cavity at the center. The inner shell 700 is cylindrical and has openings 722 at the upper end surface 720 and the lower end surface 710 at both ends of the axial direction, so that the input shaft 100 and the output shaft 200 are connected to the transmission part 300 from the outside of the inner shell 700.

[0116] Specifically, the transmission part 300 is embedded in the accommodating cavity. The transmission part 300 is respectively in contact with the upper end surface 720 and the lower end surface 710 of the inner shell 700 by the gear end cover 420 and the lower planet carrier 322. The input shaft 100 and the output shaft 200 respectively penetrate the openings 722 of the upper end surface 720 and the lower end surface 710 and are connected to the transmission part 300.

[0117] In this embodiment, the inner shell 700 axially clamps the transmission part 300 through its upper end surface 720 and lower end surface 710, ensuring that the components in the transmission part 300 remain tightly connected during the rotation process, thereby improving the stability of the reducer operation process.

[0118] like Figure 1 As shown, in one embodiment of the present invention, an inner shell 700 which is more convenient to manufacture is introduced. The inner shell 700 is a barrel-shaped structure with one end open and the other end provided with an end surface.

[0119] In addition, the outer circumference of the lower planet carrier 322 is configured to protrude from the outer circumference of the inner gear ring 410. When the inner housing 700 is connected to the transmission part 300, the peripheral side wall of the inner housing 700 is connected and combined with the outer circumference of the lower planet carrier 322.

[0120] In addition, the spacer structure 600 further includes a jump-stopping pad 640 . The jump-stopping pad 640 is disposed between the tooth end cover 420 and the upper end surface 720 .

[0121] In order to improve the dynamic balance of the rotation of each planetary gear system in the transmission part 300 and the coaxiality of the connection, in another embodiment of the present invention, an inner housing 700 provided with a neck shaft 721 is introduced.

[0122] The neck shaft 721 is disposed on the upper end surface 720 of the inner shell 700. Specifically, the neck shaft 721 extends from the opening 722 of the upper end surface 720 to the outside of the accommodating cavity. The inner barrel shaft 220 and the neck shaft 721 are arranged to coincide with the central axis, and penetrate the neck shaft 721 to be connected to the transmission part 300.

[0123] In this embodiment, the inner housing 700 is connected and integrated with the lower planetary carrier 322, which increases the area for braking the planetary carrier in the lower planetary gear system, thereby enabling a more reasonable distribution of the device for controlling the output of the reducer.

[0124] like Figure 1 As shown, in another embodiment of the present invention, a structure capable of improving the rigidity of the reducer is introduced.

[0125] Specifically, the reducer is further provided with an upper shell 810 and a lower shell 820. The upper shell 810 and the lower shell 820 are respectively rotatably sleeved with the output shaft 200 and the input shaft 100 and buckled toward each other to form a frame structure covered on the outer periphery of the inner shell 700 for fixing the reducer.

[0126] In another embodiment of the present invention, in order to improve the concentricity of the input shaft 100 and the output shaft 200 and weaken the vibration intensity during the operation of the reducer, the structures of the upper housing 810 and the lower housing 820 are further optimized.

[0127] The upper housing 810 and the lower housing 820 are respectively provided with a recessed groove 830. In addition, a rotating bearing is embedded in the recessed groove 830. In order to apply an axial clamping force to the output shaft 200 and the input shaft 100 when the upper housing 810 and the lower housing 820 are buckled and connected, the output shaft 200 connected to the upper housing 810 and the input shaft 100 connected to the lower housing 820 are provided with corresponding structures for abutment.

[0128] Specifically, the output shaft 200 includes an inner barrel shaft 220 having a shaft shoulder 222 on its outer circumferential surface. The inner barrel shaft 220 penetrates into the rotating bearing of the upper housing 810 and abuts against the rotating bearing with the shaft shoulder 222 .

[0129] A hollow shaft 323 is extended from the end surface of the lower planet carrier 322. The outer peripheral surface of the hollow shaft 323 is provided with a shaft shoulder 222 protruding from the end surface. The hollow shaft 323 penetrates into the rotating bearing of the lower housing 820 and abuts against the rotating bearing with the shaft shoulder 222.

[0130] In this embodiment, by providing the upper and lower shells 820, the splicing structure of the reducer consisting of the input shaft 100, the output shaft 200 and the transmission part 300 that move relative to each other along the axial direction is made more stable. The buckling of the upper shell 810 and the lower shell 820 can further improve the connection stability between the reducer and the washing device, reduce the jitter of the reducer caused by loose connection during operation, thereby further eliminating operating noise and improving the comfort of use of the washing device.

[0131] The present invention also provides a washing device using the reducer in the above embodiment. The washing device includes a pulsator and an inner tub.

[0132] Specifically, the impeller is located at the bottom of the inner barrel, and the central axis of the impeller coincides with the central axis of the inner barrel. The reducer is fixed below the inner barrel, and its inner barrel shaft 220 is fixedly connected to the bottom wall of the inner barrel. In addition, the impeller shaft 210 of the reducer passes through the bottom wall of the inner barrel and is plugged into the center of the bottom surface of the impeller.

[0133] In addition, the impeller and the inner barrel are independently arranged and can rotate around their central axes independently.

[0134] In this embodiment, the washing equipment adopts the reducer of the present invention, which not only reduces the manufacturing cost of the washing equipment and the total manufacturing time of the washing equipment, but also improves the overall quality and maintenance convenience of the washing equipment. At the same time, the noise during the operation of the washing equipment is greatly reduced due to the stable quality of the reducer.

[0135] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A speed reducer for a washing device, comprising an input shaft (100), an output shaft (200) and a transmission part (300), wherein the input shaft (100) and the output shaft (200) are arranged at two ends of the axial direction of the transmission part (300), characterized in that: The transmission part (300) comprises a first planetary structure (310) and a second planetary structure (320) arranged in upper and lower layers, and a gear ring structure (400) sleeved with the first and second planetary structures from the outer peripheral side; The input shaft (100) is connected in series with the first and second planetary structures along the central axis, and the output shaft (200) is inserted into the first planetary structure (310) and the ring gear structure (400) along the axial direction to form a transmission connection.

2. A reducer for washing equipment according to claim 1, characterized in that: The gear ring structure (400) comprises a cylindrical inner gear ring (410) and a disc-shaped tooth end cover (420); one axial end of the inner gear ring (410) is connected to the tooth end cover (420) and the other end is open; the outer periphery of the tooth end cover (420) is connected to the inner gear ring (410) and the center is connected to the output shaft (200).

3. A reducer for washing equipment according to claim 1 or 2, characterized in that: The first planetary structure (310) comprises an upper planetary carrier cover (311) and an upper planetary carrier (314) which are connected to each other at intervals along the axial direction. A first connection port (312) is provided at the center of the upper planetary carrier cover (311) for plugging the output shaft (200). A second connection port (315) is provided at the center of the upper planetary carrier (314) and passes through both end surfaces thereof for transmission connection with the second planetary structure (320).

4. A reducer for washing equipment according to claim 3, characterized in that: The first planetary structure (310) further comprises a plurality of upper planetary wheels (316) which are located at the interval between the upper planetary carrier cover (311) and the upper planetary carrier (314) and are dispersedly arranged on a circumference concentric with the upper planetary carrier cover (311).

5. A reducer for washing equipment according to claim 4, characterized in that: The first planetary structure (310) further comprises an upper planetary shaft (317); a plurality of concave holes (313) distributed on the same circumference are provided on the opposite end surfaces of the upper planetary carrier cover (311) and the upper planetary carrier (314); one end of the upper planetary shaft (317) is inserted into the concave hole (313) and the other end abuts against the upper planetary carrier (314); and the upper planetary wheel (316) is rotatably sleeved on the upper planetary shaft (317).

6. A reducer for washing equipment according to claim 5, characterized in that: The second planetary structure (320) comprises a lower planetary carrier cover (321) and a lower planetary carrier (322) which are connected in an axial direction at intervals; the lower planetary carrier cover (321) is annular and abuts against the upper planetary carrier (314) at its end surface; The transmission part (300) further comprises a transmission wheel (500), one end of which is arranged at the center of the second planetary structure (320) and the other end of which passes through the annular hole at the center of the lower planetary carrier cover (321) and is plugged into the second connection port (315).

7. A reducer for washing equipment according to claim 6, characterized in that: The input shaft (100) comprises an input main shaft (110), one end of which is provided with a driving gear (111) that can mesh with the upper planetary gear (316); The transmission wheel (500) is provided with a through hole (510) along its central axis, the other end of the input main shaft (110) passes through the lower planetary carrier cover (321) along the through hole (510) and passes through the lower planetary carrier (322), and the transmission wheel (500) can freely rotate around the input main shaft (110); The driving gear (111) is located on the transmission wheel (500) and is meshedly connected with the upper planetary gear (316).

8. A reducer for washing equipment according to claim 7, characterized in that: A hollow shaft (323) coinciding with the central axis is extended from the end surface of the lower planetary carrier (322) away from the lower planetary carrier cover (321), and the end of the other end of the input main shaft (110) protrudes from the hollow shaft (323).

9. A reducer for washing equipment according to any one of claims 6 to 8, characterized in that: The output shaft (200) includes a pulsator shaft (210) and an inner barrel shaft (220), wherein the inner barrel shaft (220) is plug-connected with the gear ring structure (400) at its end, and the inner barrel shaft (220) is provided with a center hole (221) extending axially through both ends, and the pulsator shaft (210) is relatively rotatably sleeved in the center hole (221) of the inner barrel shaft (220) and plug-connected with the upper planet carrier cover (311).

10. A washing device using the reducer according to any one of claims 1 to 9, characterized in that: include: An inner barrel connected to the output shaft (200); A pulsator is connected to one end of the output shaft (200) that penetrates into the inner barrel.

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