US Pat. No. 9,963,818

DRUM WASHING MACHINE

Haier Asia Co., Ltd., To...

1. A drum washing machine, comprising:an outer tank provided in a shell;
a drum, which is provided in the outer tank and configured to rotate with a horizontal shaft or an inclination shaft inclining relative to a horizontal direction as a center;
a rotating body, provided at a rear part of the drum and a surface of which is provided with a protruding part in contact with washings;
a driving part, configured to be operated in a first driving form and a second driving form, wherein the first driving form refers to a form in which the drum and the rotating body are enabled to rotate at different rotation speeds, and the second driving form refers to a form in which the drum and the rotating body are enabled to rotate integrally at a same rotation speed; and
a control part, configured to control actions of the driving part,
wherein in a washing process or a rinsing process, the control part is configured to control the driving part to be operated in the first driving form or the second driving form in accordance with a corresponding washing mode which is determined by the resistance of clothes to be washed to mechanical force;
wherein the driving part comprises a driving motor, a first rotating shaft, a second rotating shaft, a bearing unit, a wing decelerating mechanism, a drum decelerating mechanism and a clutch mechanism part;
the driving motor is further configured for driving the rotating body and the drum;
the first rotating shaft has a hollow shape, a first sliding bearing and a second sliding bearing are respectively at a front part and a rear part of the first rotating shaft, and a mechanical sealing element is arranged at a front end part;
the second rotating shaft is enclosed in the first rotating shaft, the front part of the second rotating shaft protrudes forward from the first rotating shaft, and the rear part of the second rotating shaft protrudes rearward from the first rotating shaft;
the outer circumferential surface of the second rotating shaft is supported by the first sliding bearing and the second sliding bearing, and the second rotating shaft rotates within the first rotating shaft,
a bearing part is arranged in the central part of the bearing unit, a first rolling bearing and a second rolling bearing are respectively arranged on the front part and the rear part of the bearing part, and a mechanical sealing element is arranged at the front end part, the outer circumferential surface of the first rotating shaft is supported by the first rolling bearing and the second rolling bearing, and the first rotating shaft rotates within the bearing part;
the bearing unit is fixed on the rear surface of the outer tank, the drum is fixed to the first rotating shaft, and the rotating body is fixed to the second rotating shaft;
wherein the wing decelerating mechanism comprises a wing pulley, a first motor pulley and a wing transmission belt, the wing pulley is supported by a rear end part of the second rotating shaft;
the first motor pulley is mounted at a front end part of the motor shaft of the driving motor, and the wing transmission belt is erected between the wing pulley and the first motor pulley;
the drum decelerating mechanism is configured to decelerating the first rotating shaft; and
the clutch mechanism part is configured for switching the driving part between the first driving form and the second driving form.

US Pat. No. 10,060,065

DRUM WASHING MACHINE

Haier Asia Co., Ltd., To...

1. A drum washing machine, comprising:an outer tank, configured in a shell;
a drum, configured in the outer tank and capable of rotating by using a horizontal axis or an inclination axis inclining relative to a horizontal direction as a center;
a rotating body, configured at a rear part of the drum and provided with a protruding part configured to be in contact with washings on a surface of the rotating body;
a driving part, configured to enable the drum and the rotating body to rotate at different rotating speeds; and
a water supply mechanism part, capable of splashing water to the surface of the rotating body;
wherein the water supply mechanism part comprises: a water storage part, configured on the rear part of the drum, and configured to move between a position of water soaked in the outer tank and a position higher than the water in the outer tank and store water when soaked in water of the outer tank; and an outflow port, configured on the water storage part, and configured to enable the water stored in the water storage part to flow out to the surface of the rotating body at an upper position;
wherein the protruding part extends radially from center of the rotating body to an outer circumference part of water soaked in the outer tank.

US Pat. No. 10,214,847

DRUM WASHING MACHINE

Haier Asia Co., Ltd., (J...

1. A drum washing machine, comprising:an outer tank configured in a shell;
a drum configured in the outer tank and capable of rotating by using a horizontal axis or an inclination axis inclining relative to a horizontal direction as a center;
a rotating body arranged at a rear part of the drum and provided with a protruding part in contact with washings on a surface of the rotating body;
a driving part capable of operating in a first driving form and a second driving form, wherein the first driving form is a driving form that enables the drum and the rotating body to rotate at different rotating speeds, and the second driving form is a driving form that enables the drum and the rotating body to integrally rotate at a same rotating speed; and
a control part,
wherein the control part detects load quantity of the washings in the drum, and enables the driving part to operate in the second driving form while detecting the load quantity;
wherein the driving part comprises a driving motor, a first rotating shaft, a second rotating shaft, a wing decelerating mechanism, a drum decelerating mechanism, and a clutch mechanism part, the clutch mechanism part configured to switch a driving form of the driving part between the first driving form and the second driving form;
wherein the driving motor is configured to generate torque for driving the drum and the rotating body;
wherein the first rotating shaft has a hollow shape, and a first sliding bearing and a second sliding bearing are respectively arranged at a front part and a rear part of an inner part of the first rotating shaft;
wherein the second rotating shaft is encircled by the first rotating shaft, a front part of the second rotating shaft protruding forward of the first rotating shaft, a rear part of the second rotating shaft protruding backwards of the first rotating shaft, an outer circumferential surface of the second rotating shaft supported by the first sliding bearing and the second sliding bearing, and the second rotating shaft rotatable within the first rotating shaft;
wherein the wing decelerating mechanism comprises a wing belt wheel, a first motor belt wheel, and a wing transmission belt, the wing decelerating mechanism configured to decelerate a rotation of the driving motor according to a deceleration ratio determined by an outer diameter ratio of the wing belt wheel to the first motor belt wheel and transmit the rotation being decelerated to the second rotating shaft;
wherein the drum decelerating mechanism comprises a drum belt wheel, a second motor belt wheel, and a drum transmission belt, the drum decelerating mechanism configured to decelerate a rotation of the driving motor according to the deceleration ratio determined by the outer diameter ratio of the drum belt wheel to the second motor belt wheel and transmit the rotation being decelerated to the first rotating shaft; and
wherein, in the first driving form, the second rotating shaft is connected to the wing belt wheel for transmitting the rotation of the wing belt wheel to the second rotating shaft so as to rotate the drum and the rotating body at different rotating speeds and, in the second driving form, the second rotating shaft is connected to the drum belt wheel for transmitting the rotation of the drum belt wheel to the second rotating shaft so as to rotate the drum and the rotating body at the same rotating speed.

US Pat. No. 10,145,049

DRUM WASHING MACHINE

Haier Asia Co., Ltd., To...

1. A drum washing machine, comprising:an outer tank provided in a housing;
a drum, which is provided in the outer tank and capable of rotating about one of a horizontal axis and an inclination axis inclining with respect to a horizontal direction;
a rotating body, which is provided at a rear part of the drum and a surface of which is provided with a protruding part; and
a driving part, configured to drive the drum and the rotating body to rotate,
wherein the driving part comprises:
a driving motor;
a first rotating shaft fixed to the drum;
a second rotating shaft fixed to the rotating body;
a first pulley, which is fixed on the first rotating shaft and is connected with the driving motor via a first transmission belt;
a second pulley, which is connected with the driving motor via a second transmission belt and has an outer diameter different from that of the first pulley; and
a clutch mechanism part, configured to switch a driving form of the driving part between a first driving form and a second driving form, wherein the first driving form refers to a form in which the second rotating shaft is connected with the second pulley in a manner that a rotation of the second pulley is enabled to be transferred to the second rotating shaft, so that the drum and the rotating body rotate at different speeds along with a rotation of the driving motor; and a second driving form refers to a form in which the second rotating shaft is disconnected with the second pulley in a manner that the rotation of the second pulley is enabled to be not transferred to the second rotating shaft, so that, along with the rotation of the driving motor, the drum rotates and the rotating body becomes a free rotation state.