CN114717802B - Clutch device and clothes treatment equipment - Google Patents

Abstract

The application relates to the technical field of clothes treatment, and provides a clutch device which comprises a pulsator shaft, an inner drum shaft, a clutch sleeve, a force application mechanism and a brake mechanism, wherein one end of the pulsator shaft is used for being connected with an output part of a motor, the other end of the pulsator shaft is used for being connected with the pulsator, the inner drum shaft is sleeved outside the pulsator shaft, the clutch sleeve is sleeved outside the inner drum shaft, the clutch sleeve is in anti-rotation fit with the inner drum shaft and can slide along the axial direction of the inner drum shaft, the force application mechanism is used for driving the clutch sleeve to slide so as to be combined with or separated from the output part of the motor, the brake mechanism is positioned at the periphery of the inner drum shaft, and the brake mechanism is used for braking or releasing the inner drum shaft. On the one hand, the inner cylinder shaft is braked or released by the brake mechanism to realize braking, the production cost of the product is lower, and meanwhile, compared with the existing motor direct-drive deceleration braking, the load of the motor braking is reduced, and the reliability is high. On the other hand, the inner cylinder is braked by the brake mechanism, so that the following rotation phenomenon is avoided, the abrasion of the inner cylinder is reduced, and the cleaning ratio is improved.

Description

Clutch device and clothes treatment equipment

Technical Field

The application relates to the technical field of clothes treatment, in particular to a clutch device and clothes treatment equipment.

Background

The laundry treating apparatus, for example, pulsator washing machine, performs switching between washing and dehydrating through a clutch. The motor commonly adopted by the existing pulsator washing machine is used as a rotary power source for washing and dewatering, the pulsator shaft is directly connected with the motor and the pulsator, and the inner cylinder is sleeved outside the pulsator shaft in a sleeved mode and is connected with the inner cylinder. During washing, the direct-drive motor directly drives the pulsator shaft to rotate, and the pulsator shaft drives the pulsator to rotate. During dehydration, the clutch sleeve is integrated with the impeller shaft and the inner cylinder shaft, and the motor drives the clutch sleeve, the washing shaft and the dehydration shaft to synchronously rotate so as to drive the inner cylinder and the impeller to synchronously rotate. In the washing process, the inner cylinder water can drive the inner cylinder to rotate along with the impeller to generate a follow-up rotation phenomenon, in order to prevent the follow-up rotation phenomenon, the upper end face of the clutch sleeve is provided with teeth, the lower end face of the outer shell of the clutch is provided with tooth grooves, and when washing, the teeth are inserted into the tooth grooves to lock the inner cylinder, so that the follow-up rotation of the inner cylinder is prevented. However, in the mode of preventing the inner cylinder from rotating, if the power is suddenly cut off in the dehydration process, the problem of tooth beating can be caused. And the clutch directly driven by the motor is not provided with a braking structure, and the motor is usually adopted for braking, so that the reliability is low.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a clutch device and a clothes treating apparatus, which have high reliability of braking.

In order to achieve the above object, an aspect of the embodiments of the present application provides a clutch device, including a pulsator shaft, an inner drum shaft, a clutch sleeve, a force application mechanism and a brake mechanism, where one end of the pulsator shaft is used to connect with an output part of a motor, the other end of the pulsator shaft is used to connect with a pulsator, the inner drum shaft is sleeved outside the pulsator shaft, the clutch sleeve is in rotation-proof fit with the inner drum shaft and can slide along an axial direction of the inner drum shaft, the force application mechanism is used to drive the clutch sleeve to slide so as to combine with or separate from the output part of the motor, and the brake mechanism is located at an outer periphery of the inner drum shaft and is used to brake or release the inner drum shaft.

In some embodiments, the braking mechanism comprises:

the brake disc is positioned at one side of the clutch sleeve far away from the motor, and the inner cylinder shaft penetrates through the brake disc and is connected with the brake disc;

the brake band is arranged around the outer peripheral surface of the brake disc, the brake band can be in contact with the outer peripheral surface of the brake disc to brake the inner cylinder shaft, and the brake band can be separated from the outer peripheral surface of the brake disc to release the inner cylinder shaft.

In some embodiments, the force application mechanism comprises an operating mechanism, a clutch elastic piece and a reset elastic piece, one end of the braking band is connected with the operating mechanism, and the other end of the braking band is fixed;

the operating mechanism applies force to drive the braking belt to be separated from the braking disc, and the clutch elastic piece drives the clutch sleeve to be combined with the output part;

the operating mechanism cancels the application of force, the reset elastic piece drives the operating mechanism to reset so as to enable the braking belt to be in contact with the braking disc for braking, and the operating mechanism is in abutting connection with the clutch sleeve so as to enable the clutch sleeve to be separated from the output part.

In some embodiments, the clutch device comprises a shell covered outside the brake disc, the operating mechanism comprises a bracket rotatably arranged on the shell, and the rotation axis of the bracket is perpendicular to the axis of the inner cylinder shaft;

in the rotation direction of the support, the support can be abutted with the clutch sleeve so as to stir the clutch sleeve to be separated from the output part.

In some embodiments, the housing includes a shell, a spacer, and a clutch frame, the shell is covered outside the brake disc, the spacer is located between the shell and the bracket, the clutch frame is fixed on the spacer, and the bracket is pivoted with the clutch frame.

In some embodiments, the operating mechanism includes a tractor, a deflector rod and a pin shaft, the deflector rod is pivoted with the shell through the pin shaft, the axis of the pin shaft is parallel to the axis of the inner cylinder shaft, the deflector rod includes a pulling end and an abutting end, the pulling end and the abutting end take the pin shaft as a fulcrum to form a lever structure, the pulling end is connected with the tractor, the abutting end is abutted with the support, one end of the braking band is connected with the deflector rod, and the other end of the braking band stretches into the shell and is fixed on the shell.

In some embodiments, the abutment end is formed with a first inclined surface, the bracket has a second inclined surface facing the first inclined surface, the retractor removes the force, and the first inclined surface can push the second inclined surface to slide so as to drive the bracket to rotate.

In some embodiments, the force applying mechanism can be used in connection with a valve element of a drain valve of a laundry treatment apparatus, the force applying mechanism force driving the valve element to open the drain.

In some embodiments, the clutch device comprises a clutch bearing sleeved outside the inner cylinder shaft, the clutch bearing is a one-way bearing, and the brake band is configured as a one-way brake band which limits the rotation of the brake disc in one way.

In some embodiments, the brake disc is formed with a through hole and a cavity, the cavity surrounds the periphery of the through hole, the inner cylinder shaft is arranged in the through hole in a penetrating mode, and the inner cylinder shaft is in interference fit with the through hole.

In some embodiments, the brake disc comprises a plastic disc body and a metal layer, wherein the plastic disc body is provided with the through holes and the cavities, and the surface of the plastic disc body is coated with the metal layer.

Another aspect of an embodiment of the present application provides a laundry treating apparatus, including:

the output part of the motor is connected with one end of the impeller shaft;

an inner cylinder;

the clutch device of any one of the above, which is positioned below the inner cylinder, wherein one end of the inner cylinder shaft is connected with the inner cylinder;

the impeller is positioned in the inner cylinder, and the other end of the impeller shaft stretches into the inner cylinder to be connected with the impeller.

According to the clutch device provided by the embodiment of the application, the brake disc is sleeved on the inner cylinder shaft, so that on one hand, the inner cylinder shaft is braked or released by the brake mechanism to realize braking, the production cost of a product is lower, and meanwhile, compared with the existing motor direct-drive deceleration brake, the load of the motor brake is reduced, and the reliability is high. On the other hand, in the washing state, the inner cylinder is braked by the brake mechanism, so that the following rotation phenomenon is avoided, the abrasion of the inner cylinder is reduced, and the washing ratio is improved.

Drawings

FIG. 1 is a schematic diagram of a clutch device according to an embodiment of the present application;

FIG. 2 is a bottom view of the structure of FIG. 1;

FIG. 3 is a cross-sectional view of the structure of FIG. 1, schematically illustrating the clutch sleeve in a disengaged state;

FIG. 4 is a cross-sectional view of the structure of FIG. 1, schematically illustrating the clutch sleeve in an engaged state;

FIG. 5 is an enlarged view of the structure of FIG. 3 at A;

FIG. 6 is an enlarged view of the structure shown in FIG. 3 at B;

FIG. 7 is an enlarged view of the structure of FIG. 4 at C;

FIG. 8 is a schematic view of the structure of the brake disc and inner drum shaft of the clutch device in an embodiment of the application;

fig. 9 is a cross-sectional view showing the structure of the clutch housing and the spacer of the clutch device according to an embodiment of the present application.

Description of the reference numerals

An output unit 101; a second key 101a; a pulsator shaft 11; an inner cylinder shaft 12; a first key 12a; a clutch elastic member 13; a return elastic member 14; a drain valve 15; a pull rod 16; a clutch sleeve 2; a first key groove 2a; a second key groove 2b; a brake disc 3; a through hole 3a; a cavity 3b; a brake band 4; a first brake band 41; an operating mechanism 5; a bracket 51; pushing end 511; a driving end 512; a second inclined surface 512a; a retractor 52; a lever 53; pulling end 531; an abutment end 532; a first inclined surface 532a; a pin 54; a housing 6; a housing 61; a pad 62; a clutch carrier 63; clutch bearing 7.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments of the present application and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as unduly limiting the present application.

In the description of the embodiments of the present application, the "upper", "lower", "left", "right", "forward", "reverse" azimuth or positional relationship is an azimuth or positional relationship when the laundry treating apparatus is normally used, for example, an azimuth or positional relationship shown in fig. 1 and 2. The term "first/second" merely distinguishes between different objects and does not denote that there is the same or a relationship between the two. It is to be understood that such directional terms are merely used to facilitate the description of the application and to simplify the description, and are not intended to indicate or imply that the devices or elements so referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus are not to be construed as limiting the application.

In one aspect, referring to fig. 1 to 4, the clutch device includes a pulsator shaft 11, an inner cylinder shaft 12, a clutch sleeve 2, a force application mechanism and a brake mechanism.

One end of the pulsator shaft 11 is connected to the output part 101 of the motor, and the other end of the pulsator shaft 11 is connected to the pulsator. That is, the lower portion of the pulsator shaft 11 is connected to the motor, and the upper portion of the pulsator shaft 11 is used to be connected to the pulsator of the laundry treatment device.

The inner drum shaft 12 is sleeved outside the pulsator shaft 11, specifically, the upper part of the inner drum shaft 12 is used for being connected with an inner drum of the clothes treatment device, the inner drum shaft 12 is of a hollow structure, and the pulsator shaft 11 is sleeved in the inner drum shaft 12 through a sliding bearing.

The clutch sleeve 2 is sleeved outside the inner cylinder shaft 12, and the clutch sleeve 2 is in rotation-proof fit with the inner cylinder shaft 12 and can slide along the axial direction of the inner cylinder shaft 12. The force application mechanism is used for driving the clutch sleeve 2 to slide so as to be combined with or separated from the output part 101 of the motor. Specifically, the clutch sleeve 2 is fitted over the lower outer side of the inner tube shaft 12, the clutch sleeve 2 is in a rotationally fixed engagement with the inner tube shaft 12 and is slidable in the axial direction of the inner tube shaft 12, and the clutch sleeve 2 has an engaged state in which it is engaged with the output portion 101 of the motor and a disengaged state in which it is disengaged from the output portion 101 of the motor. The rotation-stopping fit means a fit mode in which no relative rotation is generated between the clutch collar 2 and the inner cylinder shaft 12 in the circumferential direction. That is, the rotation-stopping fit can enable the clutch sleeve 2 to rotate synchronously with the inner cylinder shaft 12, and the clutch sleeve 2 can slide along the axial direction of the inner cylinder shaft 12 to enable the clutch sleeve 2 to be combined with the output part 101 so as to realize transmission connection between the motor and the inner cylinder shaft 12 or be separated from the output part 101 so as to disconnect the transmission connection between the motor and the inner cylinder shaft 12.

A braking mechanism is located at the outer periphery of the inner barrel shaft 12 for braking or releasing the inner barrel shaft 12. In an exemplary embodiment, referring to fig. 1 to 4, the brake mechanism includes a brake disc 3 and a brake band 4. The brake disc 3 is located on the side of the clutch housing 2 remote from the output 101 of the motor, and the inner cylinder shaft 12 penetrates the brake disc 3 and is connected with the brake disc 3. That is, the brake disc 3 is connected to the inner cylinder shaft 12, and the rotation of the brake disc 3 is stopped by controlling so as to brake the inner cylinder shaft 12. The brake band 4 is arranged around the outer peripheral surface of the brake disc 3, the brake band 4 has a braking state and a separation state, in the braking state, the brake band 4 can be contacted with the outer peripheral surface of the brake disc 3 to brake the inner cylinder shaft 12, in the separation state, the brake band 4 can be separated from the outer peripheral surface of the brake disc 3 to release the inner cylinder shaft 12, and in the embodiment of the application, the mechanical brake braking of the inner cylinder shaft 12 is realized by adopting the contact of the brake band 4 to the outer peripheral surface of the brake disc 3, so that the manufacturing cost is lower and the reliability is high.

In an embodiment, the output part 101 of the motor may be an output part 101 of a DD (Direct drive) motor, where the output part 101 of the DD motor has long service life and stable performance, and can provide a larger torque at a low speed, so that the output part 101 of the DD motor can directly drive the washing shaft and the pulsator shaft 11 to rotate, so that a reduction mechanism for improving the torque is not required to be arranged in the clutch device, the production cost for configuring the reduction mechanism is saved, the driving mode of the clutch device is simpler, the control difficulty of the output part 101 of the motor is reduced, and the transmission efficiency is higher.

According to the clutch device provided by the embodiment of the application, the brake disc 3 is sleeved on the inner cylinder shaft 12, so that on one hand, the inner cylinder shaft 12 is braked or released by utilizing the brake mechanism to realize braking, the production cost of a product is lower, and meanwhile, compared with the existing motor direct-drive deceleration braking, the load of motor braking is reduced, and the reliability is high. On the other hand, in the washing state, the inner cylinder is braked by the brake mechanism, so that the following rotation phenomenon is avoided, the abrasion of the inner cylinder is reduced, and the washing ratio is improved.

The clutch device in any one of the embodiments of the present application is used for a laundry treatment apparatus including, but not limited to, a washing machine, a washing and drying integrated machine, and the like, the laundry treatment apparatus including a motor, an inner tub, the clutch device in any one of the embodiments, and a pulsator. The output part of the motor is connected with one end of the impeller shaft. The clutch device is located below the inner cylinder, and one end of the inner cylinder shaft 12 is connected with the inner cylinder. The pulsator is located in the inner cylinder, and the other end of the pulsator shaft 11 extends into the inner cylinder to be connected with the pulsator. Specifically, the clothes treating apparatus further comprises an outer tub, the inner tub is disposed in the outer tub, a through hole 3a is formed in an inner peripheral wall of the inner tub, the through hole 3a communicates the inner tub and the outer tub, and in a washing process, the output part 101 of the motor drives the pulsator shaft 11 to rotate, and the pulsator shaft 11 drives the pulsator to rotate to move clothes and water current in the inner tub, thereby washing the clothes; in the dehydration process, through synchronous high-speed rotation of the inner cylinder and the impeller, water is thrown to the outer cylinder along the through hole 3a on the inner cylinder under the action of centrifugal force and discharged, so that clothes are spin-dried.

In one embodiment, referring to fig. 1, 5, 6, 8 and 9, the inner peripheral wall of the upper portion of the clutch sleeve 2 is connected with the outer portion Zhou Bijian of the lower portion of the inner cylinder shaft 12, and the clutch sleeve 2 can slide along the axial direction of the inner cylinder shaft 12, so that the clutch sleeve 2 can be switched between the engaged state and the disengaged state. Specifically, one of the inner peripheral wall of the clutch sleeve 2 and the outer peripheral wall of the inner cylinder shaft 12 is formed with a first key 12a extending along the axial direction, the other is formed with a first key groove 2a extending along the axial direction, and the clutch sleeve 2 cannot generate circumferential rotation relative to the inner cylinder shaft 12 under the limit and guide actions of the first key 12a and the first key groove 2a, so that the clutch sleeve 2 can drive the inner cylinder shaft 12 to synchronously rotate; meanwhile, the clutch sleeve 2 can also slide along the axial direction of the inner cylinder shaft 12, so that the switching between the combined state and the separated state is realized.

In one embodiment, referring to fig. 1, 5, 6, 8 and 9, the inner peripheral wall of the clutch sleeve 2 is detachably connected to the output portion 101 of the motor in a bonding manner, so that the clutch sleeve 2 can be switched between an engaged state and a disengaged state. Specifically, one of the inner peripheral wall of the lower portion of the clutch sleeve 2 and the outer peripheral wall of the output portion 101 is formed with a second key 101a extending in the axial direction, and the other is formed with a second key groove 2b extending in the axial direction. Under the limiting and guiding actions of the second key 101a and the second key groove 2b, the clutch sleeve 2 can slide along the axial direction of the output part 101 so as to realize the switching between the combined state and the separated state; meanwhile, the clutch sleeve 2 does not generate circumferential rotation relative to the output part 101 in the combined state, so that the output part 101 drives the clutch sleeve 2 to synchronously rotate.

The type of key is not limited, and in an exemplary embodiment, the first key 12a and the second key 101a are each spline, and the first key groove 2a and the second key groove 2b are each spline grooves. In another embodiment, the keys are flat keys, i.e., the first key 12a and the second key 101a, and the first key groove 2a and the second key groove 2b are flat key grooves.

In an embodiment, referring to fig. 1 to 7, the force application mechanism includes an operating mechanism 5, a clutch elastic member 13 and a return elastic member 14, one end of the brake band 4 is connected with the operating mechanism 5, the other end of the brake band 4 is fixed, and the operating mechanism 5 can abut against the clutch sleeve 2 to drive the clutch sleeve 2 to slide. That is, the operating mechanism 5 can simultaneously trigger the clutch cover 2 and the brake band 4 to be operated to achieve switching of the laundry treating apparatus between the washing state and the dehydrating state.

The operating mechanism 5 applies force to drive the brake band 4 to separate from the brake disc, and the clutch elastic member 13 drives the clutch sleeve 2 to be combined with the output part. That is, the brake band 4 is switched from the braking state to the disengaging state, the clutch elastic member 13 is switched from the disengaging state to the engaging state, the operating mechanism 5 applies force to drive the brake band 4 to release the brake disc 3, the clutch elastic member 13 drives the clutch sleeve 2 to engage with the output part 101 of the motor, the output part 101 of the motor transmits torque to the inner cylinder shaft 12 through the clutch sleeve 2, the inner cylinder shaft 12 rotates synchronously with the output part 101 of the motor, and the laundry processing apparatus is switched from the washing state to the dehydrating state.

The operating mechanism 5 removes the application of force, and the reset elastic member 14 drives the operating mechanism 5 to reset, so that the brake band 4 contacts with the brake disc to brake, and the clutch sleeve 2 is separated from the output part. That is, the brake band 4 is switched from the disengaged state to the braked state, and the clutch sleeve 2 is switched from the engaged state to the disengaged state. The operating mechanism 5 cancels the application of force, the reset elastic piece 14 drives the operating mechanism 5 to reset, the operating mechanism 5 abuts against the clutch sleeve 2 and drives the clutch sleeve 2 to be separated from the output part 101, the brake belt 4 holds the brake disc 3 tightly, the inner cylinder shaft 12 separates from the power from the output part 101 and brakes in a decelerating way along with the brake disc 3, and the clothes treatment equipment is switched from a dewatering state to a washing state.

In one embodiment, referring to fig. 1 to 7, the clutch device includes a housing 6 covering the brake disc 3, and the operating mechanism 5 includes a bracket 51 rotatably disposed on the housing 6, where a rotation axis of the bracket 51 is perpendicular to an axis of the inner cylinder shaft 12. In the rotation direction of the bracket 51, the bracket 51 can abut against the clutch sleeve 2 to shift the clutch sleeve 2 away from the output part 101. Illustratively, the bracket 51 has a pushing end 511 for pulling the clutch sleeve 2 and a driving end 512 far from the pushing end 511, and the pushing end 511 and the driving end 512 together form a lever structure with a rotation axis of the bracket 51 as a fulcrum. In the rotation direction of the bracket 51, the driving end 512 is driven by an external force to move downwards, so as to drive the pushing end 511 to move upwards to abut against the clutch sleeve 2, so as to drive the clutch sleeve 2 to move upwards and separate from the output part 101.

In an embodiment, referring to fig. 1 to 7, the clutch elastic member 13 is a compression spring located between the clutch sleeve 2 and the housing 6, one end of the elastic clutch member is abutted to the clutch sleeve 2, and the other end of the elastic clutch member is abutted to the housing 6; or, the clutch elastic member 13 is an extension spring located between the clutch sleeve 2 and the output part 101, one end of the elastic clutch member is in contact with the clutch sleeve 2, and the other end of the elastic clutch member is in contact with the output part 101. That is, when dehydration is required, the elastic clutch member provides an elastic force that drives the clutch housing 2 to slide axially downward to be combined with the output part 101.

In one embodiment, referring to fig. 1 to 7, the housing 6 includes a shell 61, a spacer 62 and a clutch frame 63. The housing 61 is covered outside the brake disc 3, the cushion block 62 is positioned between the housing 61 and the bracket 51, the clutch frame 63 is fixed on the cushion block 62, and the bracket 51 is pivoted with the clutch frame 63. The housing 61 is used for protecting the structures of the inner drum shaft 12, the brake disc 3, the brake band 4 and the like from being interfered by other external structural parts, and ensuring the stable operation of washing and dewatering of the clothes treating equipment. The clutch bracket 63 is used to fix the bracket 51 and rotate the bracket 51 along the rotation axis.

According to the clutch device provided by the embodiment of the application, the mechanical brake of the inner cylinder shaft 12 is realized by utilizing the brake belt 4 to contact the outer peripheral surface of the brake disc 3, so that the upper end surface of the clutch sleeve 2 is not required to be provided with the engaging teeth for clamping and fixing the clutch sleeve on the shell 6 during washing, so that the height of a part of the shell 61 can be reduced while the cushion block 62 is adopted to cushion and support the clutch frame 63, the height of the shell 61 can be reduced, the cost can be reduced, and the product economy can be improved.

The material of the cushion block 62 includes, but is not limited to, a lightweight material with a certain strength such as plastic (ABS, POM, nylon, etc.), so that the weight of the product is reduced, and the overall structure is lighter.

In one embodiment, referring to fig. 1, the bracket 51 is generally U-shaped, and the pushing end 511 is a pair of arms extending in parallel. By the arrangement, the pushing end 511 can not generate overturning moment along the radial direction of the clutch sleeve 2 when the clutch sleeve 2 is pushed to be switched from the combined state to the separated state, so that the reliability of the clutch sleeve 2 in sliding along the axial direction is avoided.

In one embodiment, referring to fig. 1 to 7, the operating mechanism 5 includes a retractor 52 and a lever 53, the lever 53 is pivotally connected to the housing 6 by a pin 54, and an axis of the pin 54 is parallel to an axis of the inner cylinder shaft 12. Illustratively, the lever 53 is rotatably connected to the casing 61 of the housing 6 by a pin 54, the upper end of the pin 54 being fixed to the casing 61, and the lever 53 being rotatable about the pin 54 along the axis of rotation of the pin 54.

The lever 53 includes a pulling end 531 and an abutting end 532, the pulling end 531 and the abutting end 532 form a lever structure with the pin 54 as a fulcrum, the pulling end 531 is connected to the retractor 52, and the abutting end 532 abuts against the bracket 51. Illustratively, the abutment end 532 abuts the drive end 512 of the bracket 51. That is, the retractor 52 can apply force to the pulling end 531 to rotate the lever 53 along the rotation axis of the pin 54, so as to control the abutting end 532 to abut against the bracket 51 or separate from the bracket 51.

One end of the braking band 4 is connected with the deflector rod 53, and the other end of the braking band 4 extends into the housing 6 and is fixed on the housing 6. That is, the shift lever 53 can be connected with the bracket 51 on the one hand, and also connected with the braking belt 4 on the other hand, when the retractor 52 applies force to drive the shift lever 53 to rotate, the braking belt 4 and the bracket 51 can be triggered to synchronously operate at the same time, so that synchronous control of the same retractor 52 on the braking belt 4 and the bracket 51 is realized.

The pulling device 52 applies force to pull the pulling end 531 to rotate around the pin 54 in the forward direction, the deflector rod 53 drives the braking belt 4 to switch from the braking state to the separating state, the abutting end 532 is separated from the bracket 51, and the clutch elastic piece 13 drives the clutch sleeve 2 to switch from the separating state to the combining state. That is, in the process of switching the laundry treating apparatus from the washing state to the dehydrating state, the traction device 52 applies force to pull the pulling end 531 to rotate forward around the rotation axis of the pin 54, the shift lever 53 drives one end of the brake band 4 to move away from the brake disc 3, so that the brake band 4 releases the brake disc 3, the abutting end 532 rotates in a direction away from the driving end 512 and is separated from the driving end 512, the abutting end 532 no longer applies a moment abutting the driving end 512, the clutch sleeve 2 slides downward under the elastic force of the clutch elastic member 13 and is combined with the output part 101, the torque of the motor is transmitted to the inner cylinder shaft 12 through the clutch sleeve 2, and the inner cylinder shaft 12 rotates synchronously following the motor.

The retractor 52 removes the force, the reset elastic member 14 drives the pulling end 531 to reversely rotate around the pin 54 for reset, the shift lever 53 drives the brake band 4 to switch from the separated state to the braked state, and the abutting end 532 drives the bracket 51 to rotate to shift the clutch sleeve 2 from the engaged state to the disengaged state. For example, in one embodiment, referring to fig. 1, 2 and 6, the return elastic member 14 is a torsion spring sleeved on the pin 54, one end of the torsion spring abuts against the lever 53, and the other end abuts against the housing 6. The return elastic member 14 is used for providing a return force for reversely rotating the shift lever 53 along the pin 54. That is, the laundry treating apparatus is switched from the dehydrating state to the washing state, the retractor 52 cancels the urging force, the restoring force of the restoring elastic member 14 drives the lever 53 to reversely rotate about the rotation axis of the pin 54, the lever 53 drives one end of the brake band 4 to approach the brake disc 3, so that the brake band 4 holds the brake disc 3, the abutting end 532 rotates in a direction approaching to the driving end 512 and abuts against the driving end 512, the driving end 512 is pushed by the abutting end 532 to drive the pushing end 511 to push the clutch sleeve 2 to slide upwards and separate from the output part 101 of the motor, and the inner cylinder shaft 12 is separated from the power from the output part 101 of the motor and is braked in a decelerating manner along with the brake disc 3.

For example, referring to fig. 1 to 5 and 7, the abutment end 532 is formed with a first inclined surface 532a, the bracket 51 has a second inclined surface 512a facing the first inclined surface 532a, the retractor 52 removes the force, and the reset elastic member 14 pulls the abutment end 532 to reversely rotate around the pin 54, and the first inclined surface 532a can push the second inclined surface 512a to slide to drive the bracket 51 to rotate. The bevel engagement enables a transition of the transmission direction, for example a transmission of a torque in a horizontal rotational direction to a vertical rotational direction. That is, the first inclined surface 532a plays a guiding driving role, and transmits the moment of the horizontal rotation of the shift lever 53 to the bracket 51, driving the bracket 51 to rotate in the vertical direction. Specifically, the first inclined surface 532a of the abutment end 532 rotates in the horizontal direction to apply a moment to the second inclined surface 512a of the driving end 512, which rotates downward about the rotation axis of the bracket 51, so as to drive the pushing end 511 to rotate upward to stir the clutch sleeve 2, thereby switching the clutch sleeve 2 from the engaged state to the disengaged state.

In one embodiment, referring to fig. 1 to 5 and 7, the clutch device includes a clutch bearing 7 sleeved outside the inner cylinder shaft 12, the clutch bearing 7 is a one-way bearing, and the brake band 4 is configured as a one-way brake band, and the one-way brake band limits the rotation of the brake disc 3 in a one-way manner. That is, the clutch bearing 7 is configured as a one-way bearing, and the inner cylinder shaft 12 is rotatable in only the forward direction in the axial direction or in only the reverse direction in the axial direction, and is not rotatable in both directions in the axial direction. Since the inner cylinder shaft 12 provided with the one-way bearing can only rotate in one axial direction, for example, the inner cylinder shaft 12 can only rotate in the forward axial direction, the one-way brake belt corresponding to the brake in the reverse axial direction is provided, and the inner cylinder shaft 12 can not generate the following rotation phenomenon during washing.

Specifically, referring to fig. 1 to 7, in one embodiment, the brake band 4 includes a first brake band 41, a right end of the first brake band 41 is connected to the housing 6, and a left end of the first brake band 41 is connected to the lever 53 and located between the pin 54 and the pulling end 531. That is, the retractor 52 applies force to pull the pulling end 531 to rotate forward around the pin 54, and the left end of the first brake band 41 moves leftwards following the forward rotation of the shift lever 53, so that the first brake band 41 moves away from and releases the brake disc 3; the retractor 52 removes the force, the shift lever 53 is driven by the reset elastic member 14 to reset and reversely rotate, and the left end of the first brake band 41 moves rightward following the reversely rotating, so that the first brake band 41 approaches and holds the brake disc 3 tightly.

In one embodiment, the clutch device comprises a clutch bearing 7 sleeved outside the inner cylinder shaft 12, the clutch bearing 7 is a rolling bearing, the brake band 4 comprises two groups of unidirectional brake bands with opposite braking directions, and the unidirectional brake bands unidirectionally limit the rotation of the brake disc 3. That is, the bidirectional following rotation of the inner cylinder is stopped by the brake band.

Specifically, in one embodiment, the brake band 4 includes a second brake band, the left end of the second brake band is connected to the housing 6, and the right end of the second brake band is connected to the lever 53 and is located between the pin 54 and the abutment end 532. That is, the retractor 52 applies force to pull the pulling end 531 to rotate forward around the pin 54, and the right end of the second brake band moves rightward following the forward rotation of the shift lever 53, so that the second brake band is far away from and releases the brake disc 3; the retractor 52 removes the force, the deflector rod 53 is driven by the reset elastic piece 14 to reset and reversely rotate, and the right end of the second brake band moves leftwards along with the reverse rotation of the deflector rod 53, so that the second brake band approaches and holds the brake disc 3 tightly.

The connection between the brake band 4 and the housing 6 is not limited, and may be by welding, bolts, screws, or the like. The brake band 4 may be attached to the shift lever 53 by a screw connection.

The brake disc 3 may be connected to the inner cylinder shaft 12 in the form of a rivet connection or may be connected to the inner cylinder shaft 12 in the form of an interference connection. For example, referring to fig. 3 to 7, in one embodiment, the brake disc 3 is formed with a through hole 3a and a cavity 3b, the cavity 3b surrounds the periphery of the through hole 3a, the inner cylinder shaft 12 is disposed in the through hole 3a in a penetrating manner, and the inner cylinder shaft 12 is in interference fit with the through hole 3 a. The cavity 3b enables the brake disc 3 to have a relatively large moment of inertia while the overall mass is relatively light. The interference fit mode of the inner cylinder shaft 12 and the through hole 3a can adopt an interference press-fitting process, and the breaking moment of the interference connection is larger than the braking moment.

According to the embodiment of the application, the brake disc 3 and the inner cylinder shaft 12 are directly pressed in an interference manner, a planetary gear and other speed reduction transmission structures are not arranged between the inner cylinder shaft 12 and the brake disc 3, the inner cylinder shaft 12 does not need to be made into a split structure and is directly and fixedly connected with the inner cylinder, the structure is simple, and the braking efficiency is high.

The brake disc 3 may be a hollow metal disc surface nitrided or dacromet treated, for example, iron, aluminum, etc.

In one embodiment, the brake disc 3 comprises a plastic disc body and a metal layer, wherein the plastic disc body is provided with a through hole 3a and a cavity 3b, and the surface of the plastic disc body is coated with the metal layer. The plastic disc body can further reduce the cost and the overall weight of the brake disc 3 is lighter. The metal layer is used for friction braking with the braking belt 4, the wear resistance is good, and the metal layer is coated on the surface of the plastic disc body to ensure the braking reliability of the brake disc 3. The metal layer material includes, but is not limited to, iron, aluminum, etc. For example, the metal layer is made of iron material, and the iron material and the plastic are connected by adopting a saw tooth embedded structure or an end surface screw connected structure so as to ensure the reliability of the structure of the brake disc 3.

In the clutch in the prior art, when the power is suddenly cut off in the dehydration process, the tractor is powered off and fails, the clutch sleeve is switched from the combined state to the separated state, teeth on the upper end face of the clutch sleeve at high speed can collide with tooth grooves on the lower end face of the shell, namely, the power-off tooth-beating phenomenon occurs, and the working reliability of the clutch is seriously influenced. Some prior art even in order to prevent the outage and beat tooth phenomenon, adopted two tractor structures, wherein one tractor control driving lever, another tractor control drain valve, and when dehydration state, both haulers are all moved, and one tractor control drain valve opens the drainage, and another tractor drives driving lever control support and stirs the separation and reunion cover and switch from the state of breaking away from to the state of combining, and the tooth of separation and reunion cover up end breaks away from with the tooth's socket of the lower terminal surface of shell, and the inner tube becomes the free state, and the motor drives the impeller of being connected with the impeller shaft and the inner tube of being connected with the inner tube hub synchronous dehydration this moment. When the power is suddenly cut off in the dehydration process, in order to prevent the teeth from being damaged at high speed, the tractor of the deflector rod needs to be controlled to be not operated, reset is carried out after the power is on, meanwhile, the tractor of the drainage valve is controlled to be operated, and the drainage valve is closed. If a single tractor is adopted to synchronously control the deflector rod and the drain valve, the structure can have the problem of power failure and tooth punching in the dehydration process.

The outer end face and the upper end face of the clutch sleeve 2 are toothless, the following rotation of the inner cylinder is controlled in a way of embedding connection, the brake disc 3 is braked by utilizing the brake band 4 and the brake disc 3 with higher reliability, and the brake disc 3 drives the inner cylinder shaft 12 connected with the inner cylinder to stop rotating through the brake band 4, so that the following rotation of the inner cylinder in a washing state is prevented.

In one embodiment, the force application mechanism can be used to connect with a valve element of a drain valve of the laundry treatment apparatus, the force application mechanism applying force to drive the valve element to open the drain. Illustratively, the operating mechanism 5 of the urging mechanism can be used in connection with a valve element of the drain valve 15 of the laundry treating apparatus, the operating mechanism 5 urging the valve element to open the drain. Specifically, referring to fig. 1 and 2, the clutch device includes a pull rod 16 for controlling the opening and closing of the drain valve 15, a pulling end 531 is disposed on the pull rod 16, and the pull rod 16 is connected to the valve core. The pulling device 52 applies force to pull the pulling end 531 to rotate around the pin 54 in the forward direction, and the pulling end 531 drives the pull rod 16 to move leftwards to open the drain valve 15. The retractor 52 removes the force, the restoring force of the restoring elastic member 14 drives the pulling end 531 to reversely rotate around the pin 54 for restoring, and the pulling end 531 drives the pull rod 16 to move rightward to close the drain valve 15.

That is, compared with the clutch adopting the double-tractor to prevent power failure and tooth breaking in the prior art, the clutch device provided by the embodiment of the application can realize the simultaneous action of the drain valve 15, the clutch sleeve 2 and the brake belt 4 by only one tractor 52, thereby avoiding the problem of high cost of the double tractors 52. And the outer side end face and the upper side end face of the clutch sleeve 2 are toothless, the inner cylinder is braked by the brake belt 4 to prevent the inner cylinder from rotating, the problem of power failure tooth beating is not needed to be considered, and the reliability of the whole structure is high.

The various embodiments/implementations provided by the application may be combined with one another without contradiction.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (7)

1. The clutch device is characterized by comprising a wave wheel shaft, an inner cylinder shaft, a clutch sleeve, a force application mechanism and a brake mechanism, wherein one end of the wave wheel shaft is used for being connected with an output part of a motor, the other end of the wave wheel shaft is used for being connected with the wave wheel, the inner cylinder shaft is directly and fixedly connected with an inner cylinder, the inner cylinder shaft is sleeved outside the wave wheel shaft, the clutch sleeve is in anti-rotation fit with the inner cylinder shaft and can slide along the axial direction of the inner cylinder shaft, the force application mechanism is used for driving the clutch sleeve to slide so as to be combined with or separated from the output part of the motor, the brake mechanism is positioned at the periphery of the inner cylinder shaft, and the brake mechanism is used for braking or releasing the inner cylinder shaft;

the brake mechanism comprises:

the brake disc is positioned at one side of the clutch sleeve far away from the motor, and the inner cylinder shaft penetrates through the brake disc and is connected with the brake disc;

a brake band which is provided around the outer circumferential surface of the brake disc, is capable of contacting the outer circumferential surface of the brake disc to brake the inner cylinder shaft, and is capable of being separated from the outer circumferential surface of the brake disc to release the inner cylinder shaft;

the force application mechanism comprises an operating mechanism, a clutch elastic piece and a reset elastic piece, one end of the braking belt is connected with the operating mechanism, and the other end of the braking belt is fixed;

the operating mechanism applies force to drive the braking belt to be separated from the braking disc, and the clutch elastic piece drives the clutch sleeve to be combined with the output part;

the operating mechanism cancels the application of force, the reset elastic piece drives the operating mechanism to reset so as to enable the braking belt to be in contact braking with the brake disc, and the operating mechanism is in abutting connection with the clutch sleeve so as to enable the clutch sleeve to be separated from the output part;

the clutch device comprises a shell covered outside the brake disc, the operating mechanism comprises a bracket rotatably arranged on the shell, and the rotation axis of the bracket is perpendicular to the axis of the inner cylinder shaft;

in the rotating direction of the bracket, the bracket can be abutted with the clutch sleeve so as to stir the clutch sleeve to be separated from the output part;

the shell comprises a housing, a cushion block and a clutch frame, the housing is arranged outside the brake disc, the cushion block is positioned between the housing and the bracket, the clutch frame is fixed on the cushion block, and the bracket is pivoted with the clutch frame;

the operating mechanism comprises a deflector rod, the deflector rod is provided with an abutting end, a first inclined plane is formed at the abutting end, the support is provided with a second inclined plane which faces to the first inclined plane, the operating mechanism cancels the application of force, and the first inclined plane can push the second inclined plane to slide so as to drive the support to rotate.

2. The clutch device according to claim 1, wherein the operating mechanism further comprises a retractor and a pin shaft, the shift lever is pivoted with the housing through the pin shaft, the axis of the pin shaft is parallel to the axis of the inner cylinder shaft, the shift lever comprises a pulling end and an abutting end, the pulling end and the abutting end take the pin shaft as a fulcrum to form a lever structure, the pulling end is connected with the retractor, the abutting end abuts against the support, one end of the brake band is connected with the shift lever, and the other end of the brake band extends into the housing and is fixed on the housing.

3. The clutched device of claim 1, wherein the force applying mechanism is operable to connect with a valve element of a drain valve of a laundry treating apparatus, the force applying mechanism applying force to drive the valve element to open drain.

4. The clutch device of claim 1, wherein the clutch device comprises a clutch bearing sleeved outside the inner cylinder shaft, the clutch bearing is a one-way bearing, the brake band is configured as a one-way brake band, and the one-way brake band is used for limiting the rotation of the brake disc in one way.

5. The clutch device according to claim 1, wherein the brake disc is formed with a through hole and a cavity, the cavity surrounds the periphery of the through hole, the inner cylinder shaft is arranged in the through hole in a penetrating manner, and the inner cylinder shaft is in interference fit with the through hole.

6. The clutch device of claim 5, wherein the brake disc comprises a plastic disc body and a metal layer, the plastic disc body is formed with the through hole and the cavity, and the surface of the plastic disc body is coated with the metal layer.

7. A laundry treatment apparatus, comprising:

the output part of the motor is connected with one end of the impeller shaft;

an inner cylinder;

the clutch device according to any one of claims 1 to 6, which is located below the inner cylinder, wherein one end of the inner cylinder shaft is connected with the inner cylinder;

the impeller is positioned in the inner cylinder, and the other end of the impeller shaft stretches into the inner cylinder to be connected with the impeller.