JP2023528569A - washing machine - Google Patents

Abstract

The washing machine includes a speed reduction clutch device. The reduction clutch device includes an inner tub shaft (4) and a lock mechanism (6) for locking the inner tub shaft (4). A positioning hole is provided in the side wall of the inner tank shaft (4). Also, the lock mechanism (6) has a lock rod (7) which is reciprocally inserted into/withdrawn from the positioning hole. Furthermore, the reduction clutch device includes a guide ring (8) for guiding the insertion of the lock rod (7) into the positioning hole. In the washing machine, the lock rod (7) is inserted into the positioning hole to lock the inner tub shaft (4), and when the lock rod (7) is pulled out, the lock of the inner tub shaft (4) is released, thereby realizing switching between two types of clutch states. Also, by installing a guide ring (8) to guide the insertion of the lock rod (7) into the positioning hole, it becomes easier to determine the lock position. This avoids displacement of the locking rod (7) and makes the locking mechanism (6) more secure. [Selection drawing] Fig. 1

Description

The present invention belongs to the technical field of washing machines, and specifically relates to washing machines.

In the operation mode of a conventional fully automatic pulsator washing machine, generally, during washing and rinsing, the driving device rotates the pulsator alternately forward and reverse by means of the deceleration clutch device, but does not operate the inner tub. On the other hand, during dehydration, the driving device synchronously rotates the pulsator and the inner tank by means of the reduction clutch device. However, as the level of science and technology progresses and people's demands for quality of life increase, it is difficult to wash clothes by using only the rotation of the pulsator to stir the water flow during the washing machine's operation process. There is a limit to improving the effect, and it is not possible to meet the needs of users who are increasing day by day. Therefore, how to diversify the washing modes of the fully automatic pulsator washing machine is a problem that needs to be solved as soon as possible.

Currently, there are two cleaning modes that are relatively common: a fully automatic mode in which the pulsator rotates without operating the inner tub, and a hand-washing mode in which the pulsator rotates and the inner tub rotates freely. In order to realize the above two types of washing modes in the same washing machine, it is necessary to change the drive system by improving the structure of the transmission mechanism, and realize mutual switching between the two types of modes.

The Chinese patent of US Pat. No. 5,300,002 discloses a transmission mechanism that produces a two-way drive suitable for use in washing machines. The mechanism includes one power input and two power outputs. One power output end thereof is connected to the agitator shaft (10) to rotate the agitator shaft in a first direction. The other power output end is connected to the inner tub shaft (11) to rotate the inner tub shaft in a second direction opposite to the first direction. WO 2005/010000 also discloses a washing machine that produces two-way washing and a washing method that can produce two-way washing in the washing machine, as well as an associated agitator and inner tub. In this patent, the problem of a single drive system is solved by designing a transmission mechanism capable of generating power in two directions, but the structure of the disclosed transmission mechanism is complicated. , the production cost is high.

The Chinese patent No. 2003-200031 discloses a fully automatic washing machine including an outer tub, an inner tub, a pulsator and a driving device. The drive includes at least two rotors and at least one stator. One of the rotors is connected to the inner tank shaft, and the other rotor is connected to the pulsator shaft. The drive described above is a variable frequency direct drive motor. The rotor, stator, inner tank shaft and pulsator shaft are coaxially installed. The inner tub shaft is hollow, and the pulsator shaft is provided within the inner tub shaft. In the washing machine, the pulsator and the inner tub rotate in the same direction or in opposite directions to each other during washing. Alternatively, either the pulsator or the inner tank rotates. During dehydration, the pulsator and the inner tank rotate in the same direction at the same speed. Although the drive in that patent includes two rotors and provides bi-directional power output, a drive with bi-directional power output is very costly.

In view of the above, the present invention is proposed.

Chinese Patent Application Publication No. 02804912.8 Chinese Patent Application Publication No. 201310408108. Specification X

The technical problem to be solved by the present invention is to provide a washing machine having two types of clutch states and capable of stably and reliably switching between the two types of clutch states in order to eliminate the defects of the prior art. to provide.

In order to solve the above technical problems, the basic idea of the technical solution adopted in the present invention is as follows.

The washing machine includes a speed reduction clutch device. The reduction clutch device includes an inner tank shaft and a lock mechanism for locking the inner tank shaft. A positioning hole is provided in the side wall of the inner tub shaft. Further, the lock mechanism has a lock rod that is reciprocally inserted into and pulled out of the positioning hole. The reduction clutch device further includes a guide ring for guiding the lock rod to be inserted into the positioning hole.

Further, the guide ring is covered on the outside of the inner tank shaft and has a guide hole corresponding to the positioning hole.

Further, the speed reduction clutch device further includes a braking wheel fixedly covered on the outside of the inner tub shaft. Through holes are formed in the brake wheel corresponding to the positioning holes. The guide ring is mounted on the outside of the braking wheel.

Further, the guide ring is provided with a guide sliding groove extending along the circumferential direction, and one end of the lock rod that can be inserted into/withdrawn from the positioning hole is movably inserted into the guide sliding groove. It is installed and loosely fitted on the surface of the guide sliding groove.

Moreover, the guide ring is made of flexible material. One end of the lock rod that can be inserted into/withdrawn from the positioning hole is placed in relatively slidable contact with the outer surface of the guide ring.

Additionally, the locking mechanism includes a housing. A guide path extending along the axial direction of the lock rod and having a certain length is fixedly installed in the housing, and the lock rod is installed in the guide path so as to reciprocate. .

Moreover, the locking mechanism further includes a drive. The drive device axially reciprocates the lock rod through a transmission assembly to insert/withdraw the locating hole.

Additionally, the transmission assembly includes a connecting rod. One end of the connecting rod is connected to a driving device and can be driven by the driving device to rotate around the end point. A guide groove having a certain length perpendicular to the axis is provided at one end of the lock rod that is spaced apart from the positioning hole. A connection part is provided at the other end of the connecting rod, and the connection part is movably installed in the guide groove.

Further, the transmission assembly includes gears and racks. The rack is fixedly mounted on one end of the lock rod away from the positioning hole and extends along the axis of the lock rod to have a certain length. The gear is engaged and mounted on the rack and is rotatable by the drive.

Additionally, the transmission assembly includes a cam. The cam is rotatable by a driving device, and one end of the lock rod remote from the positioning hole abuts on the cam. An elastic member is fixedly connected to the lock rod, and the elastic force of the elastic member pulls the lock rod out of the positioning hole.

By using the above technical solutions, the present invention has the following beneficial effects compared with the prior art.

In the washing machine of the present invention, the lock rod is inserted into the positioning hole to lock the inner tub shaft, and when the lock rod is pulled out, the lock of the inner tub shaft is released, thereby realizing switching between two types of clutch states. . Further, by installing a guide ring to guide the lock rod to be inserted into the positioning hole, it becomes easier to determine the lock position. This avoids displacement of the lock rod and makes the locking structure more reliable.

Since the guide ring of the present invention is covered on the outside of the inner tank shaft or the brake wheel, the lock rod does not come into direct contact with the inner tank shaft or the side wall of the brake wheel. This prevents the lock rod from sliding on the side wall of the inner tank shaft or the brake wheel when switching the clutch state, thereby avoiding wear of the inner tank shaft or the side wall of the brake wheel. The occurrence of abnormal noise at the time of metal friction associated with this is also avoided.

The guide sliding groove and the lock rod of the present invention are loosely fitted or the guide ring is made of a flexible material. Therefore, the lock rod is prevented from being worn and damaged during the sliding and positioning process.

The washing machine of the present invention can realize switching between two different washing modes only by introducing a lock mechanism while maintaining the conventional structure of the clutch device. Also, the lock mechanism has a simple structure and is easy to install.

Specific embodiments of the present invention will be described in more detail below in combination with the drawings.

The drawings are part of the invention and are used for a further understanding of the invention. Also, the schematic embodiments of the invention and their descriptions are used for the interpretation of the invention, but do not unduly limit the invention. It should be understood that the drawings described below are only part of the examples, and those skilled in the art may derive further drawings from these drawings, provided that no creative effort is required. It is possible.

FIG. 1 is a schematic structural diagram of the washing machine according to the present invention when the inner tub shaft is in a locked state. FIG. 2 is a schematic structural diagram of the washing machine according to the present invention when the inner tub shaft is in the unlocked state. FIG. 3 is a schematic enlarged view of part A of FIG. 2 in accordance with the present invention. FIG. 4 is a schematic structural diagram of the lock mechanism and guide ring in the present invention. FIG. 5 is a schematic structural diagram of a reduction clutch device according to Embodiment 5 of the present invention. FIG. 6 is a schematic diagram of the mounting structure of the bottom of the outer tub of the washing machine according to Embodiment 5 of the present invention.

It should be noted that these drawings and written description are not intended to limit the scope of the inventive concept in any way, but rather to explain the inventive concepts to those skilled in the art with reference to specific embodiments. It is.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments will be described clearly and concisely in combination with the drawings of the embodiments of the present invention. It should be noted that the following examples are for the purpose of explaining the present invention, and do not limit the scope of the present invention.

In the description of the present invention, as a point to be explained, the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "inside", "outside" are based on the drawings. Orientation or positional relationships are merely for convenience and simplification of description of the invention, and subject devices or members have particular orientations and are configured and operated in particular orientations. It does not express or imply that As such, it should not be construed as limiting the invention.

In the description of the present invention, the terms "attached", "connected", and "connected" should be interpreted broadly, unless explicitly defined and limited otherwise. For example, it may be a fixed connection, a removable connection, or an integral connection. Also, the connection may be mechanical or electrical. Furthermore, it may be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can interpret the specific meanings of the above terms in the present invention according to specific situations.

As shown in FIGS. 1-4, the washing machine of the present invention includes a speed reduction clutch device. The reduction clutch device includes an inner tank shaft 4 and a lock mechanism 6 for locking the inner tank shaft 4 . A positioning hole is provided in the side wall of the inner tank shaft 4 . The lock mechanism 6 also has a lock rod 7 that is reciprocally inserted into and pulled out of the positioning hole. Further, the reduction clutch device includes a guide ring 8 for guiding the lock rod 7 to be inserted into the positioning hole.

As a preferred embodiment of the present invention, the guide ring 8 is covered on the outside of the inner tank shaft 4 and has a guide hole 9 corresponding to the positioning hole. One end of the lock rod 7 that is inserted into/pulled out from the positioning hole slides along the circumferential direction of the guide ring 8 and is inserted into the positioning hole through the guide hole 9, thereby locking the inner tank shaft 4. do.

As a preferred embodiment of the invention, locking mechanism 6 includes housing 11 . A guide path extending along the axial direction of the lock rod 7 and having a certain length is fixedly installed in the housing 11, and the lock rod 7 is installed in the guide path so as to reciprocate. . By designing the guide path and restricting the position of the lock rod 7, it is possible to prevent the lock rod 7 from moving in other directions and deviating from the positioning hole.

As a preferred embodiment of the invention, locking mechanism 6 further includes a drive 10 . The drive 10 axially reciprocates the lock rod 7 through the transmission assembly to insert/withdraw from the locating hole. The lock rod 7 is moved by the driving device 10 and the transmission assembly to realize the locking and unlocking control of the inner tub shaft 4 .

As shown in FIGS. 1-4, the washing machine described in this embodiment includes a speed reduction clutch device. The reduction clutch device has a reduction mechanism. The reduction mechanism includes an inner tank shaft 4 and a braking wheel 5 that are fixedly connected. A brake wheel 5 is covered on the outside of the inner tank shaft 4 . The washing machine further includes an outer tub, an inner tub, and a pulsator rotatably mounted at the bottom of the inner tub. Also, the reduction clutch device further includes a pulsator shaft 3 . The inner tank is fixedly connected to the inner tank shaft 4 and the pulsator is fixedly connected to the pulsator shaft 3 . The speed reduction mechanism described above in this embodiment further includes an input shaft 1 . The input shaft 1 is fixedly connected to the drive motor of the washing machine. During operation of the washing machine, the drive motor rotates the input shaft 1, and the input shaft 1 transmits power to the pulsator shaft 3 through the reduction clutch device. Thereby, the pulsator shaft 3 rotates the pulsator under the drive of the drive motor.

The speed reduction clutch device further includes a lock mechanism 6 for locking the inner tank shaft 4 . A fixed large mounting plate 2 is attached to the bottom of the outer tub, and a lock mechanism 6 is fixedly installed on the large mounting plate 2 . A positioning hole is provided in the side wall of the inner tank shaft 4 . A through hole is formed in a portion of the brake wheel 5 connected to the inner tank shaft 4 at a position corresponding to the positioning hole. The lock mechanism 6 has a lock rod 7 that is reciprocally inserted into and pulled out of the positioning hole. When the lock rod 7 is inserted into the positioning hole, the inner tank shaft 4 is locked. In this case, during the cleaning process, the input shaft 1 transmits power to the pulsator shaft 3 through the reduction clutch device, causing the pulsator to rotate at the bottom of the inner tank. On the other hand, since the inner tub shaft 4 is locked so that the inner tub does not rotate along with the clothes or water flow, a fully automatic washing mode in which only the pulsator rotates is realized. Further, when the lock rod 7 is pulled out from the positioning hole, the inner tank shaft 4 is unlocked. In this case, during the cleaning process, the input shaft 1 transmits power to the pulsator shaft 3 through the reduction clutch device, causing the pulsator to rotate at the bottom of the inner tank. In addition, since the inner tub shaft 4 is in a free state, the inner tub can rotate freely along with the clothes and water flow. As a result, the pulsator is rotationally driven, and a hand-washing mode in which the inner tub rotates freely is realized.

A guide ring 8 is fixedly covered on the outside of the brake wheel 5 for guiding the lock rod 7 to be inserted into the positioning hole. A guide hole 9 is formed in the guide ring 8 at a position corresponding to the positioning hole. The right end of the lock rod 7 slides along the guide ring 8 in the circumferential direction during the process of switching the washing machine from the hand washing mode to the fully automatic washing mode. Then, when the lock rod 7 corresponds to the position of the positioning hole, the lock rod 7 is inserted into the positioning hole through the guide hole 9 to lock the inner tank shaft 4 .

In a preferred solution of this embodiment, the guide ring 8 is provided with a guide sliding groove extending along the circumferential direction. The right end of the lock rod 7 is movably installed in the guide slide groove and loosely fitted on the surface of the guide slide groove. By regulating the position of the right end of the lock rod 7 with the guide sliding groove, the slidable positioning of the lock rod 7 in the circumferential direction at the height where the positioning hole exists is ensured. This avoids a situation in which the right end of the lock rod 7 shifts during movement and cannot be inserted into the positioning hole. Since the lock rod 7 is loosely fitted in the guide slide groove, the effect of regulating the position of the lock rod 7 is realized, and the right end of the lock rod 7 is prevented from being worn during the sliding process.

In another preferred version of this embodiment, the guide ring 8 is made of flexible material. The right end of the lock rod 7 is placed in relatively slidable contact with the outer surface of the guide ring 8 . The lock rod 7 comes into contact with the guide ring 8 during the sliding and positioning process to achieve a guiding action for the right end of the lock rod 7 . Also, since the flexible material has a low hardness, it does not wear the lock rod 7 during the sliding process. The flexible material can be rubber or plastic. When a rubber guide ring 8 is used, the guide ring 8 is tightly fitted to the brake wheel 5 . Moreover, by directly covering the guide ring 8 on the outside of the braking wheel 5, a fixed connection is realized. On the other hand, when the guide ring 8 made of plastic is used, the guide ring 8 can be fixed to the outside of the braking wheel 5 by engagement, adhesion, or screw fixing.

In this embodiment, the speed reduction clutch device locks the inner tank shaft by inserting the lock rod into the positioning hole, and unlocks the inner tank shaft when the lock rod is pulled out. As a result, two different washing modes are realized in one washing machine by realizing switching between two types of clutch states. Further, by installing a guide ring to guide the lock rod to be inserted into the positioning hole, it becomes easier to determine the lock position. This avoids displacement of the lock rod and makes the locking structure more secure. Also, since the guide ring is covered on the outside of the braking wheel and the lock rod slides on the outside of the guide ring, it does not come into direct contact with the side wall of the braking wheel. As a result, abrasion of the side wall of the brake wheel and the lock rod is avoided, and abnormal noise caused by metal friction accompanying sliding of the lock rod is avoided.

As shown in FIGS. 1 to 4, this embodiment further limits the first embodiment described above. The locking mechanism 6 includes a housing 11. As shown in FIG. The housing 11 is fixedly connected to the mounting plate 2 . A guide path extending along the axial direction of the lock rod 7 and having a certain length is fixedly installed in the housing 11, and the lock rod 7 is installed in the guide path so as to reciprocate. . By designing the guide path and restricting the position of the lock rod 7, it is possible to prevent the lock rod 7 from moving in other directions and deviating from the positioning hole.

Locking mechanism 6 further includes a drive 10 . The drive 10 axially reciprocates the lock rod 7 through the transmission assembly to insert/withdraw from the locating hole. The washing machine has a control panel. The driving device 10 is electrically connected to the control panel, and when receiving the signal from the control panel, it drives the transmission assembly to insert/pull out the lock rod 7 into/from the positioning hole, thereby realizing the locking of the inner tank shaft. ON/OFF. Specifically, the washing machine has a fully automatic washing mode in which the pulsator is driven to rotate without rotating the inner tub, and a hand washing mode in which the inner tub rotates freely while the pulsator is driven to rotate. When the control panel receives a signal to activate the fully automatic cleaning mode, it will send a signal to the driving device, which will drive the transmission assembly to insert the lock rod 7 into the positioning hole, thereby causing the inner tank shaft 4 to to lock. In addition, when the control panel receives a signal to activate the hand-washing mode, it will send a signal to the driving device, which will drive the transmission assembly to pull out the lock rod 7 from the positioning hole, thereby moving the inner tub shaft 4. Control to unlock. The washing mode used in the washing process can be selected by the user himself when starting the washing program, or by designing the washing program of the washing machine, two washing modes can be alternately used in the same washing program. may be executed.

Additionally, the transmission assembly includes a connecting rod. One end of the connecting rod is connected to the driving device 10 and is driven by the driving device 10 to be rotatable around the end point connected to the driving device. The left end of the lock rod 7 is provided with a guide groove having a certain length perpendicular to the axis. A connecting portion is provided at the other end of the connecting rod, and the connecting portion is movably installed in the guide groove. When the driving device 10 rotates the connecting rod, the connecting portion rotates around the end point connecting the connecting rod and the driving device, moving toward and away from the position where the inner tank axis exists. At the same time, the connecting portion moves in the guide groove in a direction perpendicular to the axis of the lock rod 7, thereby reciprocating the lock rod 7 in the guide path.

In this embodiment, the position of the lock rod is restricted by providing a guide path within the housing of the lock mechanism. This further prevents the problem of the lock mechanism losing its function due to the lock rod slipping out of the positioning hole. In addition, the operation of the lock rod is controlled by the driving device and the transmission assembly, which makes the structure simple and easy to implement.

This embodiment differs from the second embodiment in the following points. That is, the transmission assembly includes gears and racks. The rack is fixedly mounted at one end of the lock rod away from the locating hole and extends to have a constant length along the axis of the lock rod. The gear is engaged and mounted on the rack and is rotatable by the drive. When the control panel receives a signal to activate the fully automatic cleaning mode, it sends a signal to the driving device to control the driving device to rotate the gear forward. As a result, the rack is moved in the direction of the positioning hole, and the lock rod is inserted into the positioning hole to lock the inner tank shaft. Also, when the control panel receives a signal to activate the hand washing mode, it sends a signal to the driving device to control the driving device to reversely rotate the gear. As a result, the rack is moved in the direction opposite to the direction in which the positioning hole exists, and the lock rod is pulled out from the positioning hole, thereby unlocking the inner tank shaft.

In this embodiment, only the structure of the transmission assembly is changed, and the effect achieved is the same as in the second embodiment. That is, by controlling the operation of the locking rod by means of the driving device and the transmission assembly, the locking of the inner tub shaft can be realized or unlocked, thereby realizing the switching between the two cleaning modes.

This embodiment differs from the second embodiment in the following points. That is, the transmission assembly includes a cam. Said cam is rotatable by a drive. Also, one end of the lock rod that is spaced apart from the positioning hole contacts the cam. An elastic member is fixedly connected to the lock rod, and the elastic force of the elastic member pulls the lock rod out of the positioning hole. When the control panel receives a signal to activate the fully automatic cleaning mode, it sends a signal to the driving device to control the driving device to rotate the cam. As a result, one end of the cam that is far from the center of rotation is directed toward the lock rod, and the lock rod is pushed in the direction of the positioning hole, thereby inserting the lock rod into the positioning hole and locking the inner tank shaft. Further, when the control panel receives a signal for activating the hand-washing mode, the control panel transmits a signal to the driving device to control the driving device to rotate the cam. As a result, when one end of the cam near the center of rotation is directed toward the lock rod, the elastic member moves the lock rod in the direction in which the lock rod is pulled out, thereby pulling the lock rod out of the positioning hole and unlocking the inner tank shaft.

Although this embodiment adopts a transmission assembly structure different from that of the second embodiment, the effect achieved is the same as that of the second embodiment. That is, by controlling the operation of the locking rod by means of the driving device and the transmission assembly, the locking of the inner tub shaft can be realized or unlocked, thereby realizing the switching between the two cleaning modes.

As shown in FIGS. 1-6, this embodiment further limits any of the above embodiments. The reduction mechanism further includes a braking band assembly capable of braking the braking wheels in one direction. The braking band assembly can brake the braking wheel 5 in one direction, and can achieve two-way braking of the braking wheel 5 in cooperation with the locking mechanism 6 .

The reduction clutch device further includes a clutch mechanism and a traction device 13 . The clutch mechanism includes a reciprocable clutch cover 16 and a shift fork assembly for reciprocating the clutch cover 16 . The traction device 13 pulls and operates the brake band assembly and the shift fork assembly. The retractor 13 performs a first retraction stroke that retracts the brake band assembly and a second retraction stroke that retracts the brake band assembly and retracts the shift fork assembly to move the clutch cover 16 into the engaged position. have. In order to achieve the operation of the brake band assembly and the shift fork assembly with the same traction device 13, and to meet the operation requirements of the brake band assembly and the shift fork assembly, the traction device 13 has at least two strokes so that more A cleaning scheme is provided. Specifically, the brake band assembly includes a brake band 12 surrounding the outer circumference of the brake wheel 5 and a brake lever 21 connected to one end of the brake band 12 . A traction device 13 is connected to the brake lever 21 .

The speed reduction mechanism in this embodiment further includes an input bushing 15 that covers the outside of the input shaft 1 . The clutch mechanism also includes a torque bushing 17 that is covered with the input shaft 1 and rotates together. The clutch cover 16 is covered with the input bushing 15 and is reciprocable in the axial direction. Furthermore, an outer spline is installed on the outer periphery of the input shaft 1, and the torque bushing 17 is provided with an inner spline. The inner splines of the torque bushing 17 are fitted to the outer splines of the input shaft 1 . Also, the torque bushing 17 rotates in synchronization with the input shaft 1 .

Clutch cover meshing teeth are provided at one end of the clutch cover 16 of this embodiment that is close to the torque bushing 17 . Also, one end of the torque bush 17 close to the clutch cover 16 is provided with a torque bush meshing tooth. When the clutch cover 16 moves up to the torque bush 17, the clutch cover meshing teeth and the torque bush meshing teeth mesh with each other, thereby bringing the clutch mechanism into a meshed state. The clutch cover meshing teeth in this embodiment are uniformly distributed in the circumferential direction, and the lower edges of the teeth are slanted. Also, the angle of the helical teeth is 0 to 15 degrees. In the mounted state, the direction of the helical teeth is from the lower side to the higher side when viewed from the dewatering direction. Further, the clutch cover meshing teeth of this embodiment are uniformly distributed in the circumferential direction, and the upper edges of the teeth are slanted. And, corresponding to the clutch cover meshing teeth, the angle of the slanted teeth of the torque bush meshing teeth is 0 to 15 degrees. In addition, in the attached state, the direction of the oblique teeth is from the higher side to the lower side when viewed from the dewatering direction.

The input shaft 1 of this embodiment is covered with a motor lock nut 20 for fixedly connecting the input shaft 1 and the rotor of the drive motor 23 . A buffer pad 18 is installed on the end face of one end of the torque bushing 17 that is close to the drive motor 23 .

The shift fork assembly described above in this embodiment includes a shift fork 19 and a shift fork base 14 . One end of the shift fork 19 is positionally regulated by the outer circumference of the clutch cover 16 to reciprocate the clutch cover 16 . A center portion of the shift fork 19 is rotatably attached to the shift fork base 14 to form a lever structure. Also, the other end of the shift fork 19 contacts the brake lever 21 . The traction device 13 relaxes the brake band 12 by pulling the brake lever 21 in the second traction stroke. At the same time, the brake lever 21 operates the shift fork 19 to move the clutch cover 16 until it meshes with the torque bushing 17 . The shift fork 19 is further provided with a shift fork torsion spring 25 for elastically returning the shift fork 19 to its position.

The brake lever 21 of this embodiment simultaneously controls the brake band 12 and the clutch cover 16 (washing and dewatering clutch switching). When the traction device 13 does not operate, the brake band 12 tightly surrounds the braking wheel, the shift fork 19 does not operate, and the clutch cover 16 is positioned at the uppermost end without operation. When the traction device 13 is in the first stroke, it pulls part of the brake band 12 away so that there is a small gap between the brake band 12 and the brake wheel 5 . At this time, the clutch cover 16 does not operate and the shift fork 19 does not operate either. Also, the end of the shift fork 19 contacts and presses the clutch cover 16 . On the other hand, when the traction device 13 is positioned at the second stroke, the brake band 12 is completely separated from the braking wheel 5 to provide a large gap. At the same time, the shift fork 19 operates, the clutch cover 16 moves downward, and the shift fork 19 separates from the clutch cover 16 .

The reduction clutch device of this embodiment further includes a lower end case 26 having an inner space, and the braking wheel 5 is installed in the inner space of the lower end case 26 . The brake wheel 5 includes a brake wheel body having an open receiving chamber and a brake wheel axle fixedly connected to the open end of the brake body. A two-way rotary bearing is installed between the braking axle and the lower end case 26 . By doing so, the braking wheel of this embodiment can rotate in two directions. A mounting opening for the brake band 12 is formed in the peripheral wall of the lower end case 26 . One end of the brake band 12 is fixed to one side of the mounting opening. The other end enters the inner space of the lower end case 26 through the brake band mounting opening, encloses the braking wheel 5 , extends through the braking band mounting opening, and is connected to the brake lever 21 . The brake lever 21 is rotatably attached to the lower end case 26 via a brake lever rotating shaft. A return torsion spring for returning the brake lever 21 to its position is installed on the brake lever rotating shaft.

The shift fork base 14 of this embodiment is fixedly attached to the end cover on the bottom of the lower end case 26 . Further, the input bush 3 is covered with a clutch compression spring 27 for elastically returning the clutch cover 16 to its position and engaging it. The clutch compression spring 27 is installed between the clutch cover 16 and the bottom end surface of the lower end case 26 .

A drain valve 24 for controlling the opening and closing of the drain port is attached to the bottom of the outer tub 22 of the washing machine in this embodiment. The drain valve has a drain valve pullrod and the retractor 13 is connected to the drain valve pullrod. The drain valve pull rod and the traction device 13 are connected via a tension spring. During the course of the retractor 13 executing the first retraction stroke, the extension spring extends and the drain valve pull rod is deactivated, thereby keeping the drain valve closed.

The embodiment further provides a control method for the washing machine. In the washing machine, the lock mechanism 6 locks the inner tub shaft 4, the braking wheel 5 is put into a braking state, and the clutch mechanism is controlled to disengage, and the drive motor 23 operates to transmit power to the washing machine through the deceleration clutch device. is transmitted to control the pulsator to reciprocate, and the lock mechanism 6 unlocks the inner tank shaft 4, controls the brake wheel 5 to be in a free rotation state, and disengages the clutch mechanism. a second washing process in which the driving motor 23 operates, and power is transmitted to the washing machine through the reduction clutch device to reciprocate the pulsator and control the inner tub to operate freely; The inner tub shaft 4 is unlocked, the braking wheel 5 is controlled to rotate freely, the clutch mechanism is controlled to be engaged, and the driving motor 23 is operated to supply power to the washing machine through the deceleration clutch device. and a dehydration washing process that controls the pulsator and the inner tank to run at the same speed and in the same direction.

Further, when the washing machine controls the traction device 13 to the initial condition, the brake band assembly tightly surrounds the brake wheel 5 in a braking condition, the clutch mechanism disengages and the drain valve 24 remains closed. Then, the lock mechanism 6 is controlled to lock the inner tub shaft 4, and the drive motor 23 is operated to transmit power to the washing machine through the reduction clutch device and control the pulsator to reciprocate, thereby performing the first washing. carry out the process.

When the washing machine controls the traction device 13 to operate to the first traction stroke, the traction device 13 pulls the brake band assembly loose, the brake wheels 5 are free-running, the clutch mechanism disengages, and water is drained. Valve 24 remains closed. Then, the lock mechanism 6 is controlled to unlock the inner tub shaft 4, and the drive motor 23 operates to transmit power to the washing machine through the deceleration clutch device, reciprocate the pulsator, and freely operate the inner tub. The second cleaning process is performed by controlling the

When the washing machine controls the traction device 13 to operate to the second traction stroke, the traction device 13 pulls the brake band assembly loose, the brake wheels 5 are free-running, the clutch mechanism is engaged, and the water is drained. Valve 24 remains open. Then, the lock mechanism 6 controls to unlock the inner tub shaft 4, and the drive motor 23 operates to transmit power to the washing machine through the deceleration clutch device, so that the pulsator and the inner tub operate at the same speed in the same direction. The dehydration process is carried out by controlling the

Preferably, the first cleaning process and the second cleaning process can be executed alternatively or alternately in the same cleaning program.

In the washing process of the washing machine in this embodiment, it is possible to set a plurality of washing programs such as a fully automatic washing state and a hand washing state. These cleaning states can be used alternately based on any desired timing and time.

Fully automatic cleaning state: The lock mechanism 6 operates, the lock rod 7 is inserted into the positioning hole, and the inner tank shaft 4 does not operate (the inner tank does not rotate). Also, the pulsator is driven left and right by the drive motor 23 . In addition, the traction device 13 does not operate (the shift fork 19, the clutch cover 16, etc. do not operate).

Hand-washing state: The lock mechanism 6 returns to its position, and the lock rod 7 is pulled out from the positioning hole. Also, the traction device 13 operates in the first stroke and the brake band 12 is partially loosened, so that the brake band 12 and the brake wheel 5 have a small gap. In addition, the shift fork 19 does not operate and the clutch cover 16 does not operate either. In addition, the drive motor 23 drives the input shaft-gear train-pulsator shaft to drive the pulsator left and right and rotate the inner tank freely.

Dehydration state: Traction device 13 operates on the second stroke and shift fork 19 operates on a large stroke. As a result, the shift fork 19 is separated from the clutch cover 16 (the shift fork 19 is no longer in contact with the clutch cover 16), and the clutch cover meshing teeth of the clutch cover 16 mesh with the torque bush meshing teeth of the torque bush 17. An assembly such as an inner tank and a pulsator perform dehydration operation together by driving a motor.

The above descriptions are of preferred embodiments of the invention only, and are not intended to limit the invention in any form. Although the present invention has been disclosed above through preferred embodiments, it is not intended to limit the present invention. Within the scope of the technical scheme of the present invention, slight modifications or supplements that can be implemented by those skilled in the art using the technical content presented above are equally modified and equivalent embodiments, and all of them are equivalent to the present invention. It does not deviate from the content of the technical plan. In addition, any simple modifications, equivalent variations and supplements added to the above embodiments based on the technical essence of the present invention are all within the scope of the scheme of the present invention.

1 input shaft 2 mounting large plate 3 pulsator shaft 4 inner tank shaft 5 brake wheel 6 lock mechanism 7 lock rod 8 guide ring 9 guide hole 10 drive device 11 housing 12 brake band 13 traction device 14 shift fork base 15 input bush 16 clutch cover 17 torque bush 18 buffer pad 19 shift fork 20 motor lock nut 21 brake lever 22 outer tank 23 drive motor 24 drain valve 25 shift fork torsion spring 26 lower end case 27 clutch compression spring

Claims (10)

A washing machine comprising a reduction clutch device, wherein the reduction clutch device includes an inner tub shaft and a lock mechanism for locking the inner tub shaft,
A positioning hole is provided in a side wall of the inner tank shaft, the locking mechanism has a lock rod that is reciprocally inserted into and pulled out of the positioning hole, and the reduction clutch device further includes: A washing machine comprising a guide ring for guiding the rod to be inserted into the positioning hole. 2. The washing machine according to claim 1, wherein said guide ring is provided outside said inner tub shaft and has a guide hole corresponding to said positioning hole. The speed reduction clutch device further includes a brake wheel fixedly covered on the outside of the inner tank shaft, the brake wheel having a through hole corresponding to the positioning hole, and the guide ring 3. The washing machine as claimed in claim 2, wherein is covered outside the brake wheel. The guide ring is provided with a guide sliding groove extending along the circumferential direction, and one end of the lock rod that can be inserted into/withdrawn from the positioning hole is movably installed in the guide sliding groove. 3. The washing machine according to claim 2, wherein the guide slide groove is loosely fitted to the surface of the guide sliding groove. The guide ring is made of a flexible material, and one end of the lock rod that can be inserted into/withdrawn from the positioning hole is placed in relatively slidable contact with the outer surface of the guide ring. The washing machine according to claim 2, characterized by: The locking mechanism includes a housing, in which a guide path extending along the axial direction of the lock rod and having a certain length is fixedly installed to allow the lock rod to reciprocate. The washing machine according to any one of claims 1 to 5, wherein the washing machine is installed in the guide path. 7. The lock mechanism according to claim 6, further comprising a drive, which axially reciprocates the lock rod via a transmission assembly to insert/withdraw the lock rod into/from the positioning hole. Washing machine as described. The transmission assembly includes a connecting rod, one end of the connecting rod is connected to a driving device and is driven by the driving device to be rotatable about an end point, and one end of the locking rod spaced apart from the positioning hole has a is provided with a guide groove having a certain length perpendicular to the axis, a connecting portion is provided at the other end of the connecting rod, and the connecting portion is movably installed in the guide groove. The washing machine according to claim 7, characterized in that: The transmission assembly includes a gear and a rack, the rack being fixedly installed at one end of the lock rod away from the positioning hole and extending along the axis of the lock rod to have a certain length. 8. A washing machine according to claim 7, wherein said gear is engaged and mounted on said rack and is rotatable by said drive. The transmission assembly includes a cam, the cam is rotatable by a driving device, one end of the lock rod remote from the positioning hole abuts the cam, and the lock rod is fixedly connected to an elastic member. 8. The washing machine according to claim 7, wherein the lock rod is pulled out from the positioning hole by the elastic force of the elastic member.

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