CN107385763B

CN107385763B - Washing machine

Info

Publication number: CN107385763B
Application number: CN201710220175.7A
Authority: CN
Inventors: 朴景元; 金柱亨; 徐正基
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2016-04-06
Filing date: 2017-04-06
Publication date: 2021-12-21
Anticipated expiration: 2037-04-06
Also published as: KR102530175B1; CN107385763A; KR20170114720A

Abstract

The washing machine of the present invention is characterized by having an improved diaphragm fixing structure for preventing the laundry from being caught between the diaphragm and the lip of the inner tub. The washing machine includes another fixing member for fixing the movement of the diaphragm caused by the vibration of the outer tub, in addition to the fixing member for fixing the diaphragm so that the diaphragm is not separated from the outer tub. The other fixing piece can maintain the spacing between the diaphragm and the inner cylinder to be fixed.

Description

Washing machine

Technical Field

The present invention relates to a washing machine, and more particularly, to a washing machine in which a configuration of fixing a diaphragm provided between a door and an outer tub to the outer tub is improved.

Background

A washing machine is a machine that treats laundry, such as clothes, bedclothes, and the like, using electric power. The washing machine includes a washing unit for removing dirt from laundry using interaction of water, detergent and a rotating inner tub, and a drying unit for drying the wetted laundry using hot wind heated by a heater.

The washing machine may include: a box body with an opening for putting in the washings; a door for opening and closing the opening of the case; an outer cylinder arranged in the box body for storing water; an inner cylinder rotatably provided in the outer cylinder. When the inner tub is rotated by the motor in a state where laundry and washing water are put into the inner tub, the laundry, the inner tub and the washing water rub against each other, and dirt on the laundry is removed.

A diaphragm for preventing water leakage and vibration from being transmitted to the case when the inner cylinder rotates may be provided between the case and the outer cylinder.

The shape of the diaphragm connected to the outer cylinder is deformed by the shaking of the outer cylinder generated when the inner cylinder rotates. The outer tub connected to the inner tub may vibrate due to the inner tub rotation in the washing stage or the laundry biased to one side by the inner tub rotation, and the shape of the diaphragm may be deformed centering on the portion connected to the outer tub in the process of absorbing the vibration of the outer tub. Further, the outer tub may vibrate due to the high-speed rotation of the inner tub in the dehydration stage, and similarly, the shape of the diaphragm may be deformed about a portion connected to the outer tub in the process of absorbing the vibration of the outer tub.

In this way, when the end of the diaphragm shakes seriously in the washing stage and the dewatering stage, the distance between the inner cylinder and the diaphragm may be increased, and the washings may be stuck in the gap between the inner cylinder and the diaphragm.

Disclosure of Invention

An aspect of the present invention provides a washing machine in which a fixing structure of a diaphragm is improved to prevent damage of laundry caused by the laundry being caught between the diaphragm and an inner tub, and to prevent malfunction of the washing machine and/or damage of the diaphragm.

The washing machine of the present invention may include: a case including a first opening; an outer cylinder disposed inside the case and including a second opening; an inner cylinder disposed inside the outer cylinder and including a third opening; a diaphragm that connects the first opening and the second opening and forms a passage between the first opening and the third opening; a first fixing member for fixing the diaphragm to the outer cylinder; and a second fixing member fixing the diaphragm such that a distance between the diaphragm and the third opening is maintained constant.

The second fixing member may fix the diaphragm inside the outer cylinder.

The diaphragm may include a case coupling portion provided at the first opening side and an outer cylinder coupling portion provided at the second opening side, and the outer cylinder coupling portion may include a first flange fixed by the first fixing member and a second flange fixed by the second fixing member.

The first flange may include a first fixing groove to receive the first fixing member, and the second flange may include a second fixing groove to receive a portion of the second fixing member.

The inner cylinder may include a first lip portion forming an outer edge of the third opening, and the second flange may include a first extension portion extending to be adjacent to the first lip portion, a second extension portion extending from the first extension portion, and a third extension portion extending from the second extension portion to form the second fixing groove.

The outer barrel may include a second lip forming an outer edge of the second opening, and the second flange may form a recess receiving a portion of the second lip.

The recess may be formed on an inner surface of the second flange by the first extension portion, the second extension portion, and the third extension portion.

The second fixing member may be coupled to the second fixing groove such that a space between the first extension portion and the first lip portion is maintained fixed.

The second fixing member may include a rim portion coupled to the diaphragm, and the rim portion may include an accommodating groove to accommodate an end of the third extending portion.

The rim portion may include an inner flange and an outer flange forming the receiving groove, and the second fixing groove may receive the inner flange.

The second fixing member may include a first fastening portion engageable with the outer tube, the outer tube may include a second fastening portion disposed inside the outer tube and engageable with the second fixing member, and the first fastening portion and the second fastening portion may be engageable with each other by a fastening member.

The washing machine according to the present inventive concept may include: a case including a first opening; an outer cylinder disposed inside the case and including a second opening; a diaphragm connecting the first opening and the second opening; a first fixing member for fixing the diaphragm to an outer side of the outer cylinder; and a second fixing member fixing the diaphragm to an inner side of the outer cylinder.

The first fixing member and the second fixing member may fix the diaphragm to the outer cylinder in different directions from each other.

The first fixing member may press and fix the diaphragm to the inside in the radial direction of the second opening of the outer cylinder, and the second fixing member may press and fix the diaphragm to the front side of the outer cylinder.

The outer barrel may include a lip forming an outer edge of the second opening, and the diaphragm may include a recess receiving a portion of the lip of the outer barrel.

The second fixing member may fix the diaphragm to a portion of the lip of the outer cylinder received in the recess.

The second fixing member may include a rim portion coupled to the diaphragm, and a first fastening portion coupled to the outer cylinder.

The outer cylinder may include a second fastening portion engageable with the second fixing member, and the first fastening portion may be coupled to the second fastening portion.

The first fastening portion and the second fastening portion may be coupled by a fastener.

The second fastening part may be provided inside the outer cylinder.

In addition to the fixing member for fixing the diaphragm to the outer cylinder, the distance between the diaphragm and the inner cylinder can be maintained fixed by another fixing member that can regulate the movement of the end portion of the diaphragm.

The laundry is guided not to enter between the diaphragm and the inner tub, thereby preventing damage of the laundry and preventing malfunction of the washing machine caused by the laundry.

Drawings

Fig. 1 is a view showing a washing machine according to an embodiment of the present invention.

Fig. 2 is a perspective view of a washing machine according to an embodiment of the present invention, partially cut away.

Fig. 3 is a perspective view showing a part of a washing machine according to an embodiment of the present invention in an exploded manner.

Fig. 4 is an enlarged view of a part of fig. 1.

Fig. 5 is a front perspective view showing a diaphragm according to an embodiment of the present invention.

Fig. 6 is a rear perspective view of a septum according to an embodiment of the present invention.

Fig. 7 is a perspective view showing a first fixing member according to an embodiment of the present invention.

Fig. 8 is a perspective view showing a second fixing member according to an embodiment of the present invention.

Fig. 9 is a front perspective view of a third fastener according to an embodiment of the present invention, shown cut away.

Fig. 10 is a rear perspective view showing a front portion of an outer cylinder and a third fixing member according to an embodiment of the present invention.

Description of the symbols

1: the washing machine 10: box body

12: opening 13: lip part

20: outer cylinder 22: opening of the container

23: lip 24: rear wall

26: second fastening portion 30: inner cylinder

32: opening 33: lip part

40: motor 50: door with a door panel

52: door glass 54: door frame

100: the diaphragm 110: main body

112: hollow portion 114: a first outer edge part

115: inner surface 116: second outer edge part

118: the connecting portion 120: case body combining part

122: case coupling groove 124: first fixing groove

130: outer cylinder joint 131: first flange

132: second flange 133: outer cylinder combination groove

134: second fixing groove 136: third fixing groove

138: notch 140: lip part

180: reinforcing rib 210: first fixed part

212: wire portion 214: elastic part

220: second fixing member 222: thread part

224: the clamping portion 230: third fixing part

232: the rim portion 234: first fastening part

236: the accommodating groove 240: fastening piece

Detailed Description

The embodiments described in the present specification and the configurations shown in the drawings are preferred embodiments of the disclosed invention, and various modifications that can replace the embodiments and drawings described in the present specification may be made at the time of application of the present application.

Further, the same reference numerals or symbols given in the various drawings of the present specification denote components or structural elements that perform substantially the same function.

Furthermore, the terminology used in the description is for the purpose of describing the embodiments and is not intended to be limiting and/or limiting of the disclosed invention. The singular expressions also include the plural unless it is clear from the context that other meanings are not intended. The terms "including", "including" or "having" and the like as used herein are intended to indicate the presence of the features, numerals, steps, actions, components, parts, or combinations thereof described in the specification, and do not exclude the presence or addition of one or more other features, numerals, steps, actions, components, parts, or combinations thereof.

In addition, although the terms including order such as "first" and "second" used in the present specification may be used to describe various components, the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another component. For example, a first component can be named as a second component, and similarly, a second component can also be named as a first component without departing from the scope of the present invention. The term "and/or" includes a combination of a plurality of related description items or any one of a plurality of related description items.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a view showing a washing machine according to an embodiment of the present invention, fig. 2 is a perspective view showing a part of the washing machine according to the embodiment of the present invention in a cut-away manner, and fig. 3 is a perspective view showing a part of the washing machine according to the embodiment of the present invention in an exploded manner.

As shown in fig. 1 to 3, the washing machine 1 may be configured to include a cabinet 10 forming an external appearance, an outer tub 20 provided inside the cabinet 10 to store water, an inner tub 30 rotatably installed inside the outer tub 20, and a motor 40 driving the inner tub 30.

An opening 12 is formed in the front frame 10a of the cabinet 10. The opening 12 of the front frame 10a is opened and closed by a door 50 provided on the front frame 10 a. The door 50 includes a door glass 52 for viewing the inside of the inner tube 30 and a door frame 54 for supporting the door glass 52.

The outer cylinder 20 can be formed by joining the front portion 20a and the rear portion 20 b. Openings 22 and 32 are formed in the front surface of the front portion 20a of the outer tub 20 and the front surface of the inner tub 30 so as to correspond to the opening 12 of the front frame 10a, so that laundry can be put into the inner tub 30.

A water supply pipe 60 for supplying washing water to the outer tub 20 is provided at an upper portion of the outer tub 20. One side of the water supply pipe 60 is connected to an external water supply source (not shown), and the other side of the water supply pipe 60 is connected to a detergent supply device 62. The detergent supply device 62 is connected to the tub 20 through a connection pipe 64. The water supplied through the water supply pipe 60 is supplied to the inside of the outer tub 20 together with the detergent through the detergent supply device 62.

A drain pump 72 and a drain pipe 74 for draining water inside the outer tub 20 to the outside of the cabinet 10 are provided at a lower portion of the outer tub 20.

A plurality of through holes 34 for circulation of washing water are formed in the outer circumference of the inner tub 30, and a lifting rib 36 is provided on the inner circumferential surface of the inner tub 30 so that the laundry can be lifted and dropped when the inner tub 30 rotates.

The motor 40 is mounted to the rear wall 24 of the outer tub 20. The motor 40 includes a stator 42 fixed to the outer cylinder 20 and a rotor 44 rotatably disposed around the stator 42. The rotor 44 rotates by electromagnetic interaction with the stator 42, and transmits a rotational force to the drive shaft 46.

The driving shaft 46 transmits the rotational force of the motor 40 to the inner tube 30. One end of the drive shaft 46 is connected to the inner cylinder 30, and the other end of the drive shaft 46 extends outward of the rear wall 24 of the outer cylinder 20 and is coupled to the rotor 44.

A bearing housing 80 is provided at the rear wall 24 of the outer cylinder 20 to rotatably support the drive shaft 46. The bearing housing 80 may be formed of an aluminum alloy and may be inserted into the rear wall 24 of the outer cylinder 20 when the outer cylinder 20 is injection molded. A bearing 82 is provided between the bearing housing 80 and the drive shaft 46 so that the drive shaft 46 can smoothly rotate.

A diaphragm 100 is provided between the outer tub 20 and the door 50. The diaphragm 100 connects the opening 12 of the front frame 10a and the opening 22 of the outer cylinder 20, forms a path from the opening 12 of the front frame 10a to the opening 32 of the inner cylinder 30, and reduces vibration transmitted from the outer cylinder 20 to the front frame 10a side when the inner cylinder 30 rotates. A part of the diaphragm 100 is disposed between the door 50 and the front frame 10a, and prevents water in the outer tub 20 from leaking to the outside of the cabinet 10.

Septum 100 may be injection molded from a Thermoplastic Elastomer (Thermoplastic Elastomer). The thermoplastic elastomer has elasticity at normal temperature like rubber, and thus the diaphragm 100 formed of the thermoplastic elastomer can effectively attenuate vibration transmitted from the outer cylinder 20 to the front frame 10a side of the case 10. The diaphragm 100 is coupled to the case 10 by the first fixing member 210. Specifically, the first fixing member 210 fixes the first lip 13 forming the outer edge of the opening 12 of the front frame 10a and the tank coupling portion of the diaphragm 100.

In addition, the diaphragm 100 is coupled to the outer tub 20 by a second fixing member 220. Specifically, the second fixing member 220 fixes a portion of the second lip 23 forming the outer edge of the opening 22 of the front portion 20a of the outer cylinder 20 and the outer cylinder joint portion of the diaphragm 100.

In addition, the diaphragm 100 is coupled to the outer cylinder 20 by the third fixing member 230 such that the interval between the diaphragm 100 and the opening 32 of the inner cylinder 30 is maintained fixed. Specifically, the third fixture 230 fixes the diaphragm 100 inside the outer tube 20 such that the interval between the diaphragm 100 and the third lip 33 forming the outer edge of the opening 32 of the inner tube 30 is maintained fixed.

The detailed coupling structure of the casing 10, the diaphragm 100, and the outer cylinder 20 will be described later.

Fig. 4 is an enlarged view of a part of fig. 1, fig. 5 is a front perspective view of a diaphragm according to an embodiment of the present invention, and fig. 6 is a rear perspective view of a diaphragm according to an embodiment of the present invention, which is cut away.

As shown in fig. 2 to 6, the diaphragm 100 includes a body 110 disposed between the opening 12 of the front frame 10a and the opening 32 of the inner tub 30 when mounted on the washing machine 1. The main body 110 includes a hollow portion 112 serving as a passage for putting in and taking out laundry, and

outer edge portions

114 and 116 surrounding the hollow portion 112. When the door 50 is closed, the door glass 52 and a portion of the door frame 54 are received within the hollow portion 112 of the diaphragm 100.

The body 110 may be configured to include first and second

cylindrical body portions

110a and 110 b. The front end of the first body 110a is coupled to the lip 13 of the front frame 10a, and the rear end of the first body 110a is positioned adjacent to the lip 23 of the outer cylinder 20.

The second body portion 110b has a diameter larger than that of the first body portion 110 a. The rear end of the second body 110b is coupled to the lip 23 of the outer cylinder 20, and the front end of the second body 110b is located forward of the rear end of the first body 110 a. Hereinafter, the outer edge 114 of the first body portion 110a is referred to as a first outer edge 114, and the outer edge 116 of the second body portion 110b is referred to as a second outer edge 116.

The rear end of the first body portion 110a and the front end of the second body portion 110b are connected to each other by a connection portion 118. The connection portion 118 has a structure of being bent a plurality of times, thereby effectively attenuating vibration transmitted from the outer cylinder 20 to the case 10 side.

The diaphragm 100 includes a case coupling portion 120 provided on the opening 12 side of the case 10 and an outer cylinder coupling portion 130 provided on the opening 22 side of the outer cylinder 20. That is, a case coupling portion 120 coupled to the front frame 10a of the case 10 is provided at the front end of the first body portion 110a, and an outer cylinder coupling portion 130 is provided at the rear end of the second body portion 110 b.

The case coupling portion 120 includes a case coupling groove 122 provided radially outward of the first outer edge portion 114 and a first fixing groove 124 provided outward of the case coupling groove 122. The case coupling groove 122 is coupled with the lip 13 of the front frame 10a forming the opening 12. A first fixing piece 210 is coupled to the first fixing groove 124 to prevent the separation of the diaphragm 100 from the case 10.

A lip 140 is formed at the front end of the first body 110 a. The lip portion 140 protrudes from the inner surface 115 of the first outer edge portion 114 toward the hollow portion 112, and is formed in an annular shape along the circumferential direction of the first outer edge portion 114. The lip 140 has a front face 142 facing the door 50 and a rear face 144 facing the inner tube 30. When the door 50 of the washing machine 1 is closed, the front face 142 of the lip 140 is in contact with the door frame 54 to be sealed, thereby preventing water from leaking between the door 50 and the front frame 10a of the cabinet 10.

The outer cylinder joint 130 includes a first flange 131 extending from the second outer rim 116 toward the outer cylinder 20 side and a second flange 132 extending from the second outer rim 116 toward the inner cylinder 30 side. The first flange 131 is fixed by the second fixing member 220, and the second flange 132 is fixed by the third fixing member 230.

An outer cylinder coupling groove 133 is formed between the first flange 131 and the second flange 132, and a lip 23 of the outer cylinder 20 forming the opening 22 is coupled to the outer cylinder coupling groove 133.

The lip 23 of the outer cylinder 20 includes a first joint portion 23a on the first flange 131 side and a second joint portion 23b on the second flange 132 side. A second fixing groove 134 coupled to the first coupling portion 23a is formed at an outer surface of the first flange 131, and a second fixing member 220 is coupled to the second fixing groove 134 so as to prevent the separation of the diaphragm 100 from the outer tub 20.

A recess 138 for receiving the second coupling portion 23b of the lip 23 is formed in the inner surface of the second flange 132. In addition, the second flange 132 includes a third fixing groove 136 that receives a portion of the third fixing piece 230.

The second flange 132 includes a first extension 132a extending adjacent to the lip 33 of the inner cylinder 30, a second extension 132b extending rearward from the first extension 132a, and a third extension 132c extending from the second extension 132 b. A notch 138 is formed in the inner surface of the second flange 132 by the first, second, and

third extensions

132a, 132b, 132 c. The third fixing groove 136 is formed at an end of the second flange 132 by the second extension portion 132b and the third extension portion 132 c.

A third fixing member 230 is coupled to the third fixing groove 136 such that the interval between the first extension 132a of the second flange 132 and the lip 33 of the inner cylinder 30 is maintained fixed.

The shapes and coupling structures of the first, second, and third fixing

members

210, 220, and 230 will be described later.

As shown in fig. 5 and 6, a reinforcing rib 180 for reinforcing the strength of the diaphragm 100 is formed on a side surface of the body 110.

The reinforcing rib 180 is formed by bending at least a part of the first outer edge 114, the second outer edge 116, and the connecting portion 118 in a direction outward of the first outer edge 114, the second outer edge 116, and the connecting portion 118.

As described above, the connection portion 118 has a structure of being bent a plurality of times, thereby effectively preventing vibration transmitted from the outer cylinder 20 to the front frame 10a side of the casing 10. The connection portion 118 converts vibration energy of the outer tube 20 generated by the rotation of the inner tube 30 into heat energy, sound energy, or the like by deformation of its shape, and absorbs the heat energy, the sound energy, or the like. When the outer cylinder 20 vibrates, the connection portion 118 bends around the bending portion, and deforms. The reinforcing ribs 180 reinforce bending stress in a direction in which the connection part 118 is bent, thereby preventing interference (Self-touch) between the connection part 118 and the outer edge portion 114 of the first body part 110a, which may occur when the connection part 118 is bent, so that a phenomenon in which the diaphragm 100 is worn is not caused.

At least two ribs 180 may be disposed separately from each other in the rotational direction of the inner cylinder 30. The ribs 180 are extended and contracted in the circumferential direction r of the diaphragm 100 during the rotation of the inner tube 30, and the vibration in the circumferential direction of the outer tube 20 generated during the rotation of the inner tube 30 is effectively attenuated by the deformation of the extension and contraction of the ribs 180.

The position where the reinforcing bead 180 is formed is not limited. The reinforcing ribs 180 may be formed at least in part of the first outer edge portion 114, the second outer edge portion 116, and/or the connecting portion 118.

Fig. 7 is a perspective view showing a first fixing member according to an embodiment of the present invention, and fig. 8 is a perspective view showing a second fixing member according to an embodiment of the present invention.

Referring to fig. 4 and 7, the first fixing member 210 may be formed of a loop-shaped wire. Specifically, the first fixing member 210 may include a loop-shaped wire portion 212 and an elastic portion 214 connecting ends of the wire portion 212. The first fixing member 210 presses and fixes the lip portion 13 of the case 10 and the case coupling portion 120 of the diaphragm 100 to the inside in the radial direction of the opening 12 of the case 10 by the restoring force of the elastic portion 214.

Referring to fig. 4 and 8, the second fixing member 220 may be formed of a loop-shaped wire. Specifically, the second fixing member 220 may include a loop-shaped wire portion 222 and a clamping portion 224 connecting ends of the wire portion 222.

The second fixing member 220 fixes the diaphragm 100 from the outside of the outer tub 20 so that the diaphragm 100 is not separated from the outer tub 20. The second fixing member 220 compresses the clamping portion 224 to press and fix the first coupling portion 23a of the lip portion 23 of the outer tube 20 and the first flange 131 of the outer tube coupling portion 130 of the diaphragm 100 inward in the radial direction of the opening 22 of the outer tube 20.

The first fixing element 210 and the second fixing element 220 may be made of metal. The first fixing member 210 may be used to fix the coupled portion of the diaphragm 100 and the outer tub 20, and the second fixing member 220 may be used to fix the coupled portion of the diaphragm 100 and the case 10. In addition, either the first fixing tool 210 or the second fixing tool 220 may be used to fix both the coupling portion between the diaphragm 100 and the outer cylinder 20 and the coupling portion between the diaphragm 100 and the casing 10.

Fig. 9 is a front perspective view of a third fixing element according to an embodiment of the present invention, which is cut away, and fig. 10 is a rear perspective view of a front portion of an outer tube and the third fixing element according to an embodiment of the present invention.

Referring to fig. 4 and 9, the third fixture 230 includes a rim portion 232 coupled to the diaphragm 100, and a first fastening portion 234 coupled to the inner cylinder 30. The third fixing member 230 may be formed of various materials, and preferably, may be injection-molded of plastic. The rim portion 232 of the third fixture 230 includes a receiving groove 236 that can receive a portion of the second flange 132 of the septum 100.

Specifically, the rim portion 232 includes an inner flange 232a and an outer flange 232b that form a receiving groove 236 in which an end of the third extension 132c of the second flange 132 of the septum 100 is received. The third fixing groove 136 formed at the end of the second flange 132 by the second extension 132b and the third extension 132c accommodates the inner flange 232a of the rim portion 232 of the third fixing member 230.

In the second flange 132 of the diaphragm 100, a notch 138 is formed to receive the second engaging portion 23b of the lip 23 of the outer cylinder 20. The third fixing member 230 is combined with the third extension 132c to fix the diaphragm 100 to the second combining portion 23b of the lip 23 of the outer cylinder 20 received in the recess 138.

When the washing machine 1 operates, the outer tub 20 may be vibrated by the rotation of the inner tub 30, and the second flange 132 of the diaphragm 100 may be shaken by the vibration of the outer tub 20. The first extension 132a of the second flange 132 extends adjacent to the lip 33 of the inner tub 30, and thus there is a concern that laundry is caught between the first extension 132a and the lip 33 when the vibration of the outer tub 20 causes a large movement.

By fixing the outer cylinder coupling part 130 of the diaphragm 100 from both sides by the second fixing member 220 and the third fixing member 230, the movement of the diaphragm 100 can be effectively restrained.

In particular, the third fixing member 230 fixes the end of the second flange 132 to the inside of the outer cylinder 20, thereby being able to fix the movement of the second flange 132. Therefore, the third fixing member 230 can maintain the interval between the diaphragm 100 and the lip 33 of the inner cylinder 30 fixed.

The second fixing member 220 and the third fixing member 230 fix the diaphragm 100 not only inside and outside the outer cylinder 20 but also in different directions. That is, the second fixing tool 220 presses and fixes the diaphragm 100 to the inside in the radial direction of the opening 22 of the outer cylinder 20, while the third fixing tool 230 presses and fixes the diaphragm 100 to the front side of the outer cylinder 20. Therefore, the rotational movement of the first extension 132a of the second flange 132 of the diaphragm 100 can be more effectively fixed.

Referring to fig. 4, 9 and 10, the outer cylinder 20 includes a second fastening portion 26 to which the third fixing member 230 can be coupled inside. A plurality of second fastening portions 26 may be disposed inside the lip 23 along the opening 22 of the outer cylinder 20.

The first fastening part 234 of the third fixing member 230 and the second fastening part 26 of the outer tub 20 may be provided correspondingly, and the first fastening part 234 and the second fastening part 26 may be coupled by a fastener 240. The fastener 240 may be in various forms such as a bolt, a screw, a rivet, and the like.

The diaphragm and the fixing member according to the present invention are applied to the drum washing machine, but may be applied to a laundry dryer and a washing machine having a drying function.

Furthermore, the scope of the present invention is not limited to the specific embodiments described above. Various other embodiments that can be modified or changed by those skilled in the art without departing from the spirit of the technical idea of the present invention described in the scope of protection also belong to the scope of protection of the present invention.

Claims

1. A washing machine comprising:

a case including a first opening and a first lip defining an outer edge of the first opening;

an outer cylinder disposed inside the case and including a second opening and a second lip defining an outer edge of the second opening;

an inner cylinder disposed inside the outer cylinder and including a third opening and a third lip defining an outer edge of the third opening;

a diaphragm that connects the first opening and the second opening and forms a passage between the first opening and the third opening;

a plurality of ribs formed in an outward direction from a side surface of the diaphragm to reinforce the strength of the diaphragm, the plurality of ribs being provided to be spaced apart in a rotation direction of the inner cylinder;

A first fixing member fixing the diaphragm to the case;

a second fixing member for fixing the diaphragm to the outer cylinder; and

a third fixing member fixing one side of the diaphragm such that a distance between the diaphragm and the third opening is maintained constant,

the diaphragm includes a case coupling portion provided on the first opening side and an outer cylinder coupling portion provided on the second opening side,

the outer cylinder coupling part includes a first flange extending toward the outer cylinder, a second flange extending toward the inner cylinder, and an outer cylinder coupling groove formed between the first flange and the second flange,

the second lip of the outer cylinder is coupled to the outer cylinder coupling groove,

the second fixing member fixes the first flange on the outer side of the outer cylinder,

the third fixing member fixes the second flange to the inside of the outer cylinder.

2. A washing machine according to claim 1,

the case combination part comprises a first fixing groove for accommodating the first fixing piece,

the first flange includes a second fixing groove for receiving the second fixing member,

the second flange includes a third fixing groove for receiving a portion of the third fixing member.

3. A washing machine according to claim 2,

the second flange includes a first extension portion extending adjacent to the third lip, a second extension portion extending from the first extension portion, and a third extension portion extending from the second extension portion to form the third fixing groove.

4. A washing machine according to claim 3,

the second flange defines a recess that receives a portion of the second lip.

5. A washing machine according to claim 4,

the notch is formed on the inner surface of the second flange by the first extension portion, the second extension portion and the third extension portion.

6. A washing machine according to claim 3,

the third fixing member is coupled to the third fixing groove such that a distance between the first extending portion and the third lip portion is maintained to be fixed.

7. A washing machine according to claim 3,

the third fixing member includes a rim portion coupled to the diaphragm,

the rim portion includes an accommodating groove for accommodating an end portion of the third extending portion.

8. A washing machine according to claim 7,

The rim portion includes an inner flange and an outer flange forming the receiving groove,

the third fixing groove receives the inner flange.

9. A washing machine according to claim 1,

the third fixing member includes a first fastening portion engageable with the outer tube,

the outer cylinder includes a second fastening portion provided inside the outer cylinder and capable of being coupled to the third fixing member,

the first fastening portion and the second fastening portion are coupled by a fastener.

10. A washing machine comprising:

a case including a first opening;

an outer cylinder disposed inside the case and including a second opening;

a diaphragm connecting the first opening and the second opening;

a plurality of ribs formed in an outward direction from a side surface of the diaphragm to reinforce the strength of the diaphragm, the plurality of ribs being provided to be spaced apart in a rotational direction of the inner cylinder;

a first fixing member fixing the diaphragm to the case;

a second fixing member for fixing the diaphragm to an outer side of the outer cylinder; and

a third fixing member for fixing the diaphragm to the inner side of the outer tube,

The outer cylinder coupling part includes a first flange extending toward the outer cylinder, a second flange extending toward the inner cylinder, and an outer cylinder coupling groove formed between the first flange and the second flange, the outer cylinder being coupled to the outer cylinder coupling groove,

the second fixing member is used for fixing the first flange,

the third fixing member is used for fixing the second flange.

11. A washing machine according to claim 10,

the second fixing member and the third fixing member fix the diaphragm to the outer cylinder in different directions from each other.

12. A washing machine according to claim 11,

the second fixing member fixes the diaphragm to the inside of the outer cylinder in the radial direction of the second opening by pressing,

the third fixing member presses and fixes the diaphragm to the front side of the outer cylinder.

13. A washing machine according to claim 10,

the outer cylinder includes a lip portion forming an outer edge of the second opening,

the diaphragm includes a recess that receives a portion of the lip of the outer barrel.

14. A washing machine according to claim 13,

the third fixing member fixes the diaphragm to a portion of the lip of the outer cylinder received in the notch.

15. A washing machine according to claim 10,

the third fixing member includes a rim portion coupled to the diaphragm, and a first fastening portion coupled to the outer cylinder.

16. A washing machine according to claim 15,

the outer cylinder includes a second fastening portion engageable with the third fixing member,

the first fastening portion is coupled to the second fastening portion.

17. A washing machine according to claim 16,

18. A washing machine according to claim 16,

the second fastening portion is provided inside the outer tube.