Drum type washing machine

Abstract

Disclosed is a drum type washing machine. A driving unit includes a driving motor and a clutch mechanism part, where the clutch mechanism part switches a driving form of the driving unit between a first-shaft driving form and a second-shaft driving form, the first-shaft driving form is a form that enables a wing shaft for transmitting rotation to a stirring body and a drum shaft for transmitting rotation to a drum to integrally rotate at a same rotation speed, and the second-shaft driving form is a form that enables the wing shaft and the drum shaft to respectively rotate at different rotation speeds. A control part executes first-shaft switching treatment which is treatment that enables the clutch mechanism part to work to move the clutch body to the first position and then enables the driving motor to rotate to engage the unengaged engaging flange part with the engaged recess.

1 . A drum type washing machine, provided with:
 an outer tank, configured in a housing;   a drum, configured in the outer tank and is 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, on a surface of the rotating body, with a protruding part in contact with washings;   a driving part, configured to enable the drum and the rotating body to rotate; and   a control part, configured to control working of the driving part, wherein   the driving part comprises:   a driving motor;   a first rotation shaft, configured to transmit rotation of the driving motor to the rotating body;   a second rotation shaft, configured to transmit rotation of the driving motor to the drum; and   a clutch mechanism part, configured to switch a driving form of the driving part between a first-shaft driving form and a second-shaft driving form, wherein the first-shaft driving form is a form that enables the first rotation shaft and the second rotation shaft to integrally rotate at a same rotation speed, and the second-shaft driving form is a form that enables the first rotation shaft and the second rotation shaft to respectively rotate at different rotation speeds, wherein   the clutch mechanism part comprises: a clutch body provided with a first engaging part, wherein   by moving the clutch body to a first position so as to engage the first engaging part at the first position with a first engaged part that rotates with rotation of the driving motor, the driving form is switched to the first-shaft driving form;   the control part executes first-shaft switching treatment to carry out switching from the second-shaft driving form to the first-shaft driving form, wherein the first-shaft switching treatment is treatment that enables the clutch mechanism part to work to move the clutch body to the first position and then enables the driving motor to rotate to engage the unengaged first engaging part and the first engaged part.   
     
     
         2 . The drum type washing machine according to  claim 1 , wherein
 for the first-shaft switching treatment, the control part enables the driving motor to rotate with a driving current lower than a driving current enabling the driving motor to rotate under the first-shaft driving form after the first-shaft switching treatment.   
     
     
         3 . The drum type washing machine according to  claim 1 , wherein
 the driving part further comprises a planetary gear mechanism, wherein the planetary gear mechanism is provided with: a sun gear which rotates along with rotation of the motor; an annular internal gear which surrounds the sun gear; a plurality of planetary gears which are arranged between the sun gear and the internal gear; and a planetary gear carrier which holds the planetary gears in a free rotation manner, wherein one of the planetary gear carrier and the internal gear is fixed on the second rotation shaft;   the clutch body is provided with a second engaging part and is connected with the other one of the planetary gear carrier and the internal gear in a state of limiting rotation relative to the other one of the planetary gear carrier and the internal gear toward a circumferential direction and allowing movement along an axial direction of the second rotation shaft;   by moving the clutch body to a second position so as to engage the second engaging part at the second position with a second engaged part that does not rotate along with rotation of the driving motor and become a non-rotation state for the other one of the planetary gear carrier and the internal gear, the driving form is switched to the second-shaft driving form;   even if the clutch mechanism part works to enable the clutch body to move to the second position, the second engaging part is not engaged with the second engaged part, and at this moment, the other one of the planetary gear carrier and the internal gear rotates along with rotation of the driving motor, so that the clutch body rotates; and   the control part executes second-shaft switching treatment to carry out switching from the second-shaft driving form to the first-shaft driving form, wherein the second-shaft switching treatment is treatment that enables the clutch mechanism part to work to move the clutch body to the second position and then enables the driving motor to rotate to engage the unengaged second engaging part with the second engaged part.   
     
     
         4 . The drum type washing machine according to  claim 3 , wherein
 for the second-shaft switching treatment, the control part enables the driving motor to rotate with a driving current lower than a driving current enabling the driving motor to rotate under the second-shaft driving form after the second-shaft switching treatment.   
     
     
         5 . The drum type washing machine according to  claim 3 , further comprising a clutch driving apparatus configured to enable the clutch body to move, wherein
 the clutch driving apparatus comprises:   a working body, capable of being transferred to a first working state enabling the clutch body to move to the first position and a second working state enabling the clutch body to move to the second position; and   a state detection part, configured to detect a working state of the working body, wherein   for the first-shaft switching treatment, the control part enables the clutch driving apparatus to work according to a detection result of the state detection part so as to enable the working body to be transferred to the first working state; and   for the second-shaft switching treatment, the control part enables the clutch driving apparatus to work according to a detection result of the state detection part so as to enable the working body to be transferred to the second working state.   
     
     
         6 . The drum type washing machine according to  claim 2 , wherein
 the driving part further comprises a planetary gear mechanism, wherein the planetary gear mechanism is provided with: a sun gear which rotates along with rotation of the motor; an annular internal gear which surrounds the sun gear; a plurality of planetary gears which are arranged between the sun gear and the internal gear; and a planetary gear carrier which holds the planetary gears in a free rotation manner, wherein one of the planetary gear carrier and the internal gear is fixed on the second rotation shaft;   the clutch body is provided with a second engaging part and is connected with the other one of the planetary gear carrier and the internal gear in a state of limiting rotation relative to the other one of the planetary gear carrier and the internal gear toward a circumferential direction and allowing movement along an axial direction of the second rotation shaft;   by moving the clutch body to a second position so as to engage the second engaging part at the second position with a second engaged part that does not rotate along with rotation of the driving motor and become a non-rotation state for the other one of the planetary gear carrier and the internal gear, the driving form is switched to the second-shaft driving form;   even if the clutch mechanism part works to enable the clutch body to move to the second position, the second engaging part is not engaged with the second engaged part, and at this moment, the other one of the planetary gear carrier and the internal gear rotates along with rotation of the driving motor, so that the clutch body rotates; and   the control part executes second-shaft switching treatment to carry out switching from the second-shaft driving form to the first-shaft driving form, wherein the second-shaft switching treatment is treatment that enables the clutch mechanism part to work to move the clutch body to the second position and then enables the driving motor to rotate to engage the unengaged second engaging part with the second engaged part.   
     
     
         7 . The drum type washing machine according to  claim 6 , wherein
 for the second-shaft switching treatment, the control part enables the driving motor to rotate with a driving current lower than a driving current enabling the driving motor to rotate under the second-shaft driving form after the second-shaft switching treatment.   
     
     
         8 . The drum type washing machine according to  claim 4 , further comprising a clutch driving apparatus configured to enable the clutch body to move, wherein
 the clutch driving apparatus comprises:   a working body, capable of being transferred to a first working state enabling the clutch body to move to the first position and a second working state enabling the clutch body to move to the second position; and   a state detection part, configured to detect a working state of the working body, wherein   for the first-shaft switching treatment, the control part enables the clutch driving apparatus to work according to a detection result of the state detection part so as to enable the working body to be transferred to the first working state; and   for the second-shaft switching treatment, the control part enables the clutch driving apparatus to work according to a detection result of the state detection part so as to enable the working body to be transferred to the second working state.   
     
     
         9 . The drum type washing machine according to  claim 7 , further comprising a clutch driving apparatus configured to enable the clutch body to move, wherein
 the clutch driving apparatus comprises:   a working body, capable of being transferred to a first working state enabling the clutch body to move to the first position and a second working state enabling the clutch body to move to the second position; and   a state detection part, configured to detect a working state of the working body, wherein   for the first-shaft switching treatment, the control part enables the clutch driving apparatus to work according to a detection result of the state detection part so as to enable the working body to be transferred to the first working state; and   for the second-shaft switching treatment, the control part enables the clutch driving apparatus to work according to a detection result of the state detection part so as to enable the working body to be transferred to the second working state.