Drum washing machine

Patent metadata

Field	Value
Publication number	US-10745845-B2
Application number	US-201615781105-A
Country	US
Kind code	B2
Filing date	Nov 29, 2016
Priority date	Dec 1, 2015
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

The present disclosure reduces sound generated when a driving mode of a drum washing machine having a rotating body on a rear part of a drum is switched between a first mode and a second mode. The first mode is a driving mode in which the drum and the rotating body independently rotate, and the second mode is a driving mode in which the drum and the rotating body integrally rotate. A bearing-side cushioning member is arranged on a clutch carrying plate side. The bearing-side cushioning member firstly touches an object side when a spline of a clutch body is engaged with a spline of the clutch carrying plate, so as to reduce an impact force generated between the clutch body and the clutch carrying plate.

First claim

What is claimed is:

1. A drum washing machine, comprising:
an outer drum arranged in a housing;
a drum arranged in the outer drum and rotatable about a horizontal axis or an inclined axis inclined with respect to a horizontal direction;
a rotating body arranged in a rear part of the drum, wherein a surface of the rotating body is provided with a baffle for contacting laundry; and
a driving part configured to rotate the drum and the rotating body,
wherein the driving part comprises:
a driving motor;
a first rotating shaft configured to transmit rotation of the driving motor to the rotating body;
a second rotating shaft coaxially arranged with the first rotating shaft and configured to transmit the rotation of the driving motor to the drum;
a planetary gear mechanism, comprising a sun gear rotating along with the rotation of the driving motor, an annular internal gear surrounding the sun gear, a plurality of planetary gears interposed between the sun gear and the internal gear, and a planetary carrier free rotatably holding the plurality of planetary gears, wherein one of the planetary carrier and the internal gear is fixed to the second rotating shaft; and
a clutch mechanism part, configured to switch a driving mode of the driving part between a first mode and a second mode, wherein the first mode is a driving mode in which the first rotating shaft and the second rotating shaft independently rotate, and the second mode is a driving mode in which the first rotating shaft and the second rotating shaft integrally rotate;
the clutch mechanism part comprises:
a clutch body, connected to the other one of the planetary carrier and the internal gear in such a state that the clutch body is rotatable together with the other one of the planetary carrier and the internal gear and is moveable towards an axis direction of the second rotating shaft; a moving mechanism part, configured to enable the clutch body to move to a first position when switching to the first mode, and enable the clutch body to move to a second position when switching to the second mode;
a first engaging part with a concave-convex shape and a second engaging part with a concave-convex shape formed in the clutch body;
a first engaged part formed in a fixing part which does not rotate along with the driving motor, wherein the first engaged part has a concave-convex shape corresponding to the concave-convex shape of the first engaging part and is engaged with the first engaging part along a circumferential direction when the clutch body moves to the first position;
a second engaged part formed in a rotating part which rotates along with the driving motor, wherein the second engaged part has a concave-convex shape corresponding to the concave-convex shape of the second engaging part and is engaged with the second engaging part along the circumferential direction when the clutch body moves to the second position; and
a fixing part-side cushioning member is arranged on the clutch body side or the fixing part side, wherein the fixing part-side cushioning member firstly touches an object side when the first engaging part and the first engaged part are engaged, so as to reduce an impact force generated between the clutch body and the fixing part;

the driving part further comprises a bearing part that free rotatably supports the second rotating shaft;
a first rolling bearing and a second rolling bearing are arranged on a front portion and a rear portion of the bearing part, respectively; and an outer circumferential surface of the second rotating shaft is carried by the first rolling bearing and the second rolling bearing, and rotates smoothly in the bearing part;
the fixing part is mounted on the bearing part; the fixing part comprises a carrying body part and a pressing part; the carrying body part is formed in a flat cylindrical shape, and has the first engaged part on an inner side surface; the pressing part is protruded from the carrying body part to the second rolling bearing, and has a circular shape; and
the fixing part-side cushioning member is arranged on the fixing part side, and has a flange part sandwiched by the fixing part and the bearing part; wherein the flange part is sandwiched between the second rolling bearing of the bearing part and the pressing part of the fixing part, and is pressed to the second rolling bearing side by the pressing part; an outer circumferential edge of the flange part is provided with an annular protruding part, and the protruding part is in contact with an outer circumferential surface of the pressing part.

2. The drum washing machine according to claim 1 , wherein a rotating part-side cushioning member is arranged on the clutch body side or the rotating part side, and the rotating part-side cushioning member firstly touches the object side when the second engaging part and the second engaged part are engaged, so as to reduce an impact force generated between the clutch body and the rotating part.

3. The drum washing machine according to claim 2 , wherein the rotating part-side cushioning member is arranged on the clutch body side, and has a claw part; and the clutch body has a hole part for inserting and locking the claw part.

4. A drum washing machine, comprising:
an outer drum arranged in a housing;
a drum arranged in the outer drum and is rotatable about a horizontal axis or an inclined axis inclined with respect to a horizontal direction;
a rotating body arranged in a rear part of the drum, wherein a surface of the rotating body is provided with a baffle for contacting laundry; and
a driving part configured to rotate the drum and the rotating body,
wherein the driving part comprises:
a driving motor;
a first rotating shaft configured to transmit rotation of the driving motor to the rotating body;
a second rotating shaft coaxially arranged with the first rotating shaft and configured to transmit the rotation of the driving motor to the drum;
a planetary gear mechanism, comprising a sun gear rotating along with the rotation of the driving motor, an annular internal gear surrounding the sun gear, a plurality of planetary gears interposed between the sun gear and the internal gear, and a planetary carrier free rotatably holding the plurality of planetary gears, wherein one of the planetary carrier and the internal gear is fixed to the second rotating shaft; and
a clutch mechanism part, configured to switch a driving mode of the driving part between a first mode and a second mode, wherein the first mode is a driving mode in which the first rotating shaft and the second rotating shaft independently rotate, and the second mode is a driving mode in which the first rotating shaft and the second rotating shaft integrally rotate;
wherein the clutch mechanism part comprises:
a clutch body, connected to the other one of the planetary carrier and the internal gear in such a state that the clutch body is rotatable together with the other one of the planetary carrier and the internal gear and is moveable towards an axis direction of the second rotating shaft;
a moving mechanism part, configured to enable the clutch body to move to a first position when switching to the first mode, and enable the clutch body to move to a second position when switching to the second mode;
a first engaging part with a concave-convex shape and a second engaging part with a concave-convex shape which are formed in the clutch body;
a first engaged part which is formed in a fixing part that does not rotate along with the driving motor, wherein the first engaged part has a concave-convex shape corresponding to the concave-convex shape of the first engaging part and is engaged with the first engaging part along a circumferential direction when the clutch body moves to the first position;
a second engaged part which is formed in a rotating part that

Assignees

• Qingdao Haier Washing Mach Co
• Aqua Co Ltd
• Aqua Co Ltd

Inventors

• Yoneda Masanori
• Takeuchi Harumi

Classifications

• D06F37/304 Primary

  Arrangements or adaptations of electric motors · CPC title

• D06F17/08

  Driving arrangements for the impeller · CPC title

• D06F23/06

  and rotating or oscillating about an inclined axis · CPC title

• D06F37/40

  for driving the receptacle and an agitator or impeller, e.g. alternatively {(D06F37/304, D06F37/308 take precedence)} · CPC title

• D06F37/06

  Ribs, lifters, or rubbing means forming part of the receptacle · CPC title