KR101231027B1 - Washing machine - Google Patents

Abstract

The present invention discloses a washing machine. The washing machine includes a cabinet, a tub provided inside the cabinet and receiving washing water, an outer door that opens and closes the front surface of the cabinet by a rotation about the first rotating shaft, and a rotation about the second rotating shaft. It has an inner door for opening and closing the front of the tub, wherein the first rotation axis of the outer door and the second rotation axis of the inner door is configured to be substantially concentric. The washing machine may prevent the vibration generated in the tub from being transmitted to the cabinet by the double door structure.

Description

Washing machine {WASHING MACHINE}

The present invention relates to a washing machine, and more particularly, to a washing machine having a double door to block the transmission of vibration between the tub and the cabinet.

A washing machine is a machine that washes clothes using electric power. In general, a washing machine may be divided into a vertical shaft washing machine vertically installed with a rotating tub and a drum washing machine horizontally installed with a rotating tub. Among them, the drum washing machine washes the laundry by moving the laundry in the vertical direction along the inner circumferential surface of the rotating tub with the washing water as the rotating tub horizontally disposed alternately clockwise and counterclockwise.

In such a drum washing machine, a cabinet, a drum that is rotated by a rotational force of a motor inside the cabinet, and a tub provided between the drum and the cabinet to receive the wash water are provided, and the laundry is put into the drum on the cabinet side. A door for sealing the tub after it has been removed or taken out is joined to the front of the cabinet.

A diaphragm is installed between the tub and the cabinet to absorb the vibration of the tub and at the same time to seal the tub and the cabinet, thereby preventing foreign substances in the drum from being introduced into the space between the tub and the cabinet during washing and dehydration. However, residual water remains in the diaphragm, causing odors and the like, and the laundry may get caught, causing damage to the laundry and abnormal operation of the apparatus.

Embodiments of the present invention to provide a washing machine to block the transmission of vibration between the cabinet and the tub, and to allow the user to open and close the door more easily.

In addition, embodiments of the present invention to provide a washing machine that can eliminate the conventional inconvenience of having to open and close the outer door and the inner door, respectively.

In addition, embodiments of the present invention to provide a washing machine capable of fastening the inner door and the tub in a simple configuration.

Washing machine according to an embodiment of the present invention for solving the above problems is to open and close the front of the cabinet by a cabinet, a tub provided inside the cabinet for receiving the wash water, rotation around the first rotation axis And an inner door that opens and closes the front of the tub by a rotation formed around an outer door and a second rotation shaft, wherein the first rotation shaft of the outer door and the second rotation shaft of the inner door are substantially concentric.
The outer door and the inner door are connected by interlocking means so that opening and closing is interlocked.
The outer door and the inner door are opened and closed at regular intervals.
The washing machine includes: a first hinge support fixed to the cabinet; And a first hinge to which the outer door is coupled and supported and rotated by the first hinge support.
The first hinge is fastened to the protrusion of the first hinge support and rotates the protrusion as the first rotation axis.
The washing machine includes: a second hinge support portion fixed to the tub; And a second hinge coupled to the inner door and supported and rotated by the second hinge supporter.
The second hinge and the second hinge support are fastened by a shaft passing through the second hinge and the second hinge support, and the second hinge rotates with the shaft as the second axis of rotation.
A torsion spring is connected between the second hinge and the second hinge support.
The elastic force of the torsion spring acts on the second hinge in a direction in which the door is opened or in a direction in which the door is closed according to the rotation state of the second hinge.
Elastic force of the torsion spring when the second hinge is rotated further in the direction of opening the door than the extension line, based on the extension line connecting the fixed point of the second hinge support portion and the second rotation shaft to which one side of the torsion spring is fixed. Acts on the rotation of the second hinge in the direction in which the door is opened.
Elastic force of the torsion spring when the second hinge is further rotated in a direction in which the door is closed than the extension line, based on the extension line connecting the fixed point of the second hinge support portion to which one side of the torsion spring is fixed and the second rotation axis. Acts on the rotation of the second hinge in the direction in which the door is closed.
The outer door further includes an interlocking control unit that controls whether the outer door is interlocked with the inner door according to the driving state of the washing machine.
The inner door further includes a lever fastening part having a groove for connecting with the interlocking control part.
The linkage control unit includes a connection lever for connecting the outer door and the inner door, and when the outer door and the inner door are connected, one side of the connection lever is coupled to the lever by rotating the connection lever in a first direction. The connection lever is inserted into the groove of the negative portion and the connection lever is rotated in a direction opposite to the first direction when releasing the connection between the outer door and the inner door.
The linkage controller further includes a solenoid piston pump for operating the link lever.
The linkage control unit further includes a motor for operating the connection lever.
The inner door further includes a fastening lever for fastening the tub with the inner door.
The tub further includes a lever fastening portion to which the fastening lever is inserted and fastened.
The lever fastening part, the hook is rotated by the fastening lever is inserted and fastened to the fastening lever, the hook having an uneven surface at one end; And a spring guide having a guide protrusion for pressing and fixing the hook by an elastic force of a spring and having a portion of a concave-convex surface compressed according to the rotation of the hook.

According to the embodiment of the present invention, the vibration generated in the tub may be prevented from being transmitted to the cabinet by a double door structure configured to separately open the door opening and closing the cabinet and the door opening and closing the tub.

In addition, according to an embodiment of the present invention, as the outer door and the inner door are concentric, the outer door and the inner door may be balanced to be united, and may be opened and closed at a constant interval.

In addition, an embodiment of the present invention is to make the outer shaft for opening and closing the cabinet and the rotating shaft of each of the inner door for opening and closing the tub to be concentric, so that the inner door can be located outside the cabinet with the outer door while the door is opened. This frees up more space between the cabinet and the tub.

In addition, the present invention is to apply the elastic force by the torsion spring to the hinge for rotating the door when opening and closing the door by applying the elastic force in either the direction of the door opening or the door closing direction according to the rotation state of the hinge to open and close the door of the user Can help.

In addition, the embodiment of the present invention by fastening the lever provided in the outer door and having a hook shape in the groove of the fastening portion of the inner door according to the washing operation state, the outer door and the inner door to move in conjunction with the outer door to the user Provides operational convenience that can be opened and closed to the inner door only by the opening and closing of the.

In addition, an embodiment of the present invention to form a fastening state between the inner door and the tub by a hook that rotates in accordance with the movement of the fastening lever of the inner door, so as to maintain the fastening state by fixing the hook using the elastic force of the spring. This provides a simple fastening structure that can be applied to narrow spaces.

1 is a perspective view showing a washing machine according to an embodiment of the present invention.
FIG. 2 is an enlarged view of the double door structure of FIG.
3 and 4 are enlarged views of portion A of FIG.
5 is a view for explaining the action of the torsion spring involved in opening and closing the door.
FIG. 6 is an enlarged view of a portion B of FIG. 2.
FIG. 7 is a perspective view showing a coupling structure of the outer door and the interlock control from an angle different from that of FIG.
FIG. 8 is a plan view illustrating a configuration of an interlocking controller of FIG. 6.
FIG. 9 is a perspective view illustrating a configuration of an interlocking controller of FIG. 6. FIG.
FIG. 10 is a diagram illustrating still another example of the FIG. 6 interlocking controller;
Fig. 11 is a perspective view showing a fastening state between the connecting lever and the inner door.
12 is a plan view showing a fastening state of the connecting lever and the inner door.
FIG. 13 is an enlarged perspective view of portion C of FIG. 6.
FIG. 14 is a view showing the front surface of the lever fastening portion of FIG.
FIG. 15 is a view showing a rear face of the lever fastening portion of FIG.
FIG. 16 is an enlarged view illustrating a fastening state of a spring guide and a hook of a lever fastening part; FIG.
17 is a view showing a fastening lever approaching the lever fastening portion.
18 to 20 are diagrams illustrating a fastening state of the hook and the spring guide according to the opening and closing process of the inner door.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is merely an example and the present invention is not limited thereto.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical idea of the present invention is determined by the claims, and the following embodiments are merely a means for effectively explaining the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs.

Hereinafter, a drum washing machine will be described as an example for the convenience of the description of the present invention, but the technical idea of the present invention is not limited to the drum washing machine. Various washing methods such as a washing machine using a tub turning from side to side, a washing machine using steam, etc. Of course it can be applied to the washing machine.

Hereinafter, a washing machine according to an embodiment of the present invention will be described with reference to the accompanying drawings.

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

As shown in FIG. 1, the washing machine 100 according to an embodiment of the present invention includes a cabinet 110, a tub 120, a drum 130, an outer door 140, and an inner door ( 160).

The tub 110 is provided inside the cabinet 110 to accommodate washing water, and the drum 120 is provided inside the tub 120 to accommodate laundry. The drum 130 performs washing by using the wash water accommodated in the tub 120 while alternately rotating clockwise and counterclockwise by a motor. On the other hand, the washing machine 100 is composed of a double door in which separate doors are installed in the cabinet 110 and the tub 120, respectively, the outer door 140 opens and closes the front (cab) of the cabinet 110. 110 to seal the inside from the outside, the inner door 160 opens and closes the front of the tub 120 to seal the tub 120 from the outside.

FIG. 2 is an enlarged view of the double door structure of FIG.

Referring to FIG. 2, the door handle 141 is installed at the outer door 140 so that a user can easily grasp the outer door 140. Meanwhile, the first hinge support part 142 is fixed inside the cabinet, and the first hinge 143 is supported by the first hinge support part 142 to rotate. The outer door 140 is coupled to the first hinge 143 and rotated by the first hinge 143. Meanwhile, the second hinge support part 161 is fixed to the tub, and the second hinge 162 is supported by the second hinge support part 161 to rotate. The inner door 160 is coupled to the second hinge 162 and rotated by the second hinge 162.

As such, in the present invention, the outer door 140 rotates by the first hinge 143 to open and close the front of the cabinet, and the inner door 160 rotates by the second hinge 162 to open and close the front of the tub. Done.

3 and 4 are enlarged views of portion A of FIG. 2, and FIG. 5 is a view for explaining the action of the torsion spring involved in opening and closing the door.

3 and 4, the first hinge 143 is fastened to the protrusion 142a of the first hinge support 142, and rotates with the protrusion 142a as the rotation axis. The first hinge 143 is composed of a first hinge rod 143a and a first hinge plate 143b. Although not shown in the drawings, the outer door is coupled to the first hinge plate 143b.

Meanwhile, the second hinge 162 and the second hinge support part 161 are fastened by the shaft 163 penetrating through the second hinge 162 and the second hinge support part 161, and the second hinge 162 is fastened. It rotates using the shaft 163 as a rotating shaft. The second hinge 162 is composed of a second hinge rod 162a and a second hinge plate 162b. An inner door is coupled to the second hinge plate 162b.

On the other hand, as shown in the figure, the rotation shaft of the first hinge 143 for rotating the outer door may be configured on both sides of the rotation shaft of the second hinge 162 for rotating the inner door, on the contrary, the first hinge 143 The rotating shaft of the second hinge 162 may be configured on both sides of the rotating shaft. Here, the rotation axis of the first hinge 143 and the rotation axis of the second hinge 162 are configured to be substantially concentric. Here, substantially concentric is defined as including not only the case where the rotation axis of the first hinge 143 and the rotation axis of the second hinge 162 are exactly eccentric 0, but also eccentricity of about 1 to 2 mm.

FIG. 4 shows the first hinge 143 and the second hinge 162 shown in FIG. 3 after being rotated about 90 degrees. Although not shown in the drawings, the outer door 140 and the inner door 160 are rotated by concentric rotating shafts and are connected by interlocking means to be described later. Therefore, when the outer door 140 is opened or closed, the inner door ( 160 also opens or closes at a constant distance from the outer door 140.

Meanwhile, a torsion spring 164 is connected between the second hinge support 161 and the second hinge 162. Here, the torsion spring 164 applies a force to the second hinge 162 in the direction of opening the door or the direction of closing the door by the elastic force generated by the torsion.

Referring to FIG. 5, the second hinge support part 161 and the second hinge 162 are fastened by the shaft 163, and the second hinge 162 rotates with the shaft 163 as the rotation axis. At this time, since one side of the torsion spring 164 is fixed to the fixing point 170 of the second hinge support 161, the torsion spring 164 rotates along the second hinge 162 about the fixing point 170. Twisting Here, the second hinge 162 is a direction in which the door is opened from the extension line 180 based on the extension line 180 connecting the rotation axis of the second hinge 162 and the fixing point 170 of the torsion spring 164. In the case of further rotation, the elastic force of the torsion spring 164 acts on the second hinge 162 in the direction in which the door is opened. On the other hand, when the second hinge 162 is rotated further in the direction in which the door is closed than the extension line 180, the elastic force of the torsion spring 164 acts on the second hinge 162 in the direction in which the door is closed. However, since the inner door is interlocked with the outer door, the elastic force of the torsion spring 164 acting on the inner door also extends to the outer door, thereby acting on the opening and closing of the door as a whole.

As such, in the double door structure of the present invention, the second hinge 162 for rotating the inner door has an extension line 180 connecting the rotation axis of the second hinge 162 and the fixing point 170 of the torsion spring 164. As a reference, the elastic force of the torsion spring 164 acts in either the opening or closing direction of the door according to the rotation state of the second hinge 162 to help the opening and closing of the door.

In addition, when the rotation shafts of the outer door 140 and the inner door 160 are concentric, when the door is opened, the inner door 160 may be positioned outside the cabinet 110 together with the outer door 150. There will be more space between the cabinet and the tub. For example, the size of the laundry inlet provided in the front of the tub 120 may be increased.

FIG. 6 is an enlarged view of a portion B of FIG. 2, and FIG. 7 is a perspective view illustrating a coupling structure of an outer door and an interlock control from an angle different from that of FIG. 6.

Part B represents an interlocking structure between the outer door 140 and the inner door 160.

Referring to Figure 6, the outer door 140 is connected to the outer door 140 and the inner door 160, the connecting lever 145 for interlocking the opening and closing of the door and the connection lever 145 according to the driving state of the washing machine Interlocking control unit 144 for controlling the operation of the provided. As shown in FIG. 7, the interlock control unit 144 is attached to the inner side surface of the outer door 140.

On the other hand, the inner door 160 is provided with a lever fastening portion 165 connected to the connection lever 145.

Although not shown in the drawings, the interlocking control unit 144 under the control of the central control unit of the washing machine is interlocked with the outer door 140 and the inner door 160 when the user stores the laundry in the washing machine and closes the outer and inner doors. By releasing it, the vibration is prevented from being transmitted from the tub to the outer door 140 during washing. After washing the laundry is completed, the outer door 140 and the inner door 160 are connected to each other by the connection lever 144 to open the outer door and the inner door by interlocking. That is, the interlock control unit 144 interlocks or releases the interlocking operation of the outer door 140 and the inner door 160 according to the operating state of the washing machine.

FIG. 8 is a plan view showing the configuration of the interlocking control of FIG. 6, and FIG. 9 is a perspective view showing the structure of the interlocking control of FIG.

8 and 9, the linkage controller 144 may include the power generator 146, the first gear 147, the second gear 148, the third gear 149, the connection lever 145, and the torsion. A spring 150 and a limit switch 151.

The power generator 146 is a device for generating power for driving the connecting lever 145. In FIG. 8, the solenoid piston pump is used as an example. In addition, the first to third gears 147 to 149 are transmission means for transmitting power of the power generator 146 to the connection lever 145.

When the operation of the interlock control unit 144 configured as described above interlocks the outer door and the inner door, the case of releasing the interlocking state is described as follows.

First, referring to the case of releasing the interlocking state between the outer door and the inner door, the power generating unit 146 advances the piston by the control of the central controller, the first gear 147 is advanced by the piston. . At this time, the second gear 148 meshed with the first gear 147 rotates in the counterclockwise direction, and the third gear 149 meshed with the second gear 148 rotates in the clockwise direction. On the other hand, the lower end of the connecting lever 145 is formed with a fourth gear 145a meshing with the third gear 149, and as the fourth gear 145a rotates in a counterclockwise direction, the connecting lever 145 is also formed. Rotate counterclockwise. Accordingly, the linkage between the outer door and the inner door, which were fastened by the connecting lever 145, is released. When the rotation of the connection lever 145 is completed, the limit switch 151 detects this and informs the central controller, and the central controller controls the operation of the washing machine as set by the user, such as washing, dehydration, and rinsing. Meanwhile, a torsion spring 150 is connected between the connection lever 145 and the linkage control unit 144. The torsion spring 150 stores elastic energy while twisting as the connection lever 145 rotates counterclockwise. Done.

Next, referring to the case of interlocking the outer door and the inner door, the power generating unit 146 retracts the piston under the control of the central controller, and the first gear 147 retreats. At this time, the second gear 148 meshed with the first gear 147 rotates clockwise, and the third gear 149 rotates counterclockwise. In addition, the connecting lever 145 is rotated in the clockwise direction by the third gear 149 and the outer door and the inner door are engaged to be in an interlocked state. In the clockwise direction of the connecting lever 145 from the torsion spring 150 You will receive an elastic force.

FIG. 10 is a diagram illustrating still another example of the FIG. 6 interlocking controller;

Referring to FIG. 10, the motor 152 may be used in the power generating unit of the interlock control unit 144. At this time, the force generated by the rotation of the motor 152 is transmitted through the gears to drive the connecting lever 145. In FIG. 8, the solenoid piston pump is used in the power generating unit, but this is only an example. In addition, various power generating devices such as the motor 152 may be used.

Fig. 11 is a perspective view showing the fastening state of the connecting lever and the inner door, and Fig. 12 is a plan view showing the fastening state of the connecting lever and the inner door.

11 and 12, the inner door 160 is provided with a lever fastening portion 165, and a groove is formed at one side of the lever fastening portion 165. When interlocking the outer door and the inner door, the interlock control unit 144 rotates the connection lever 145 so that one side of the connection lever 145 having a hook shape is inserted into the groove of the lever fastening unit 165. Accordingly, the connection lever 145 and the lever fastening portion 165 are connected so that the outer door and the inner door are in an interlocked state. When the user opens and closes the outer door in this interlocking state, the inner door 160 is linked with the outer door to open and close together.

FIG. 13 is an enlarged perspective view of portion C of FIG. 6.

Part C represents a coupling state between the inner door 160 and the tub 120.

Referring to FIG. 13, the inner door 160 includes a fastening lever 166 connecting the inner door 160 and the tub 120 when the door is closed. On the other hand, the tub 120 is provided with a lever fastening portion 122 to which the fastening lever 166 of the inner door 160 is inserted and fastened. The lever fastening part 122 is provided with a hook 123 for fastening with the fastening lever 166.

FIG. 14 is a view showing a front surface of the lever fastening portion of FIG. 13, FIG. 15 is a view showing a rear surface of the lever fastening portion of FIG. 13, and FIG. 16 is a fastening of the spring guide and the hook of the lever fastening portion. It is the figure which expanded state.

14 to 16, the lever coupling part 122 includes a hook 123 having a groove into which the locking lever 166 is inserted and a spring for pressing and fixing the hook 123 by the elastic force of the spring 126. And a torsion spring 125 connected to the inside of the guide 124 and the lever fastening portion 122 and the hook 123.

An uneven surface 127 having first and second concave surfaces 127a and 127c and a convex surface 127b is formed at a lower end of the hook 123, and the spring guide 124 has an uneven surface of the hook 123. The guide protrusion 127a which presses 127 is provided. Here, one side of the spring 126 accommodated in the spring guide 124 compresses the inner surface of the lever fastening portion 122, and the other side compresses the inner surface of the spring guide 124, the spring 126 Is pushed forward by the spring guide 124 by the tension force by the elasticity. At this time, the guide protrusion 127a compresses the uneven surface 127 by the tension force of the spring 126 to prevent the hook 123 from moving unnecessarily from side to side.

FIG. 17 is a view showing a fastening lever approaching the lever fastening portion, and FIGS. 18 to 20 are views showing a fastening state of the hook and the spring guide according to the opening and closing process of the inner door.

Referring to FIG. 17, when the user pushes and closes the outer door, the inner door interlocked with the outer door is also closed. At this time, the groove of the hook 123 of the lever fastening portion 122 is open in a direction opposite to the direction in which the door is closed, the fastening lever 166 provided in the inner door proceeds in the direction in which the door closes the hook 123 Is inserted into the groove.

Referring to Figure 18 to 20 will be described in detail the process of the fastening lever 166 is fastened to the lever fastening portion 122 as follows.

First, referring to FIG. 18, before the fastening lever 166 of the inner door is inserted into the hook 123, the groove of the hook 123 is opened in a direction opposite to the direction in which the door is closed, and the spring guide 124. Squeezes the first concave surface 127a of the uneven surface of the hook 123 by the elastic force of the spring 126 to fix the hook 123.

Next, referring to FIG. 19, with the inner door almost close to the tub, the fastening lever 166 of the inner door is inserted into the groove of the hook 123 and the hook 123 is pushed by the fastening lever 166. When is rotated, the site | part of the uneven surface to which the guide protrusion 124a of the spring guide 124 presses changes. 19 shows a state where the position of the guide protrusion 124a is located on the convex surface 127b of the hook 123. At this time, the guide protrusion 124a is pushed back by the convex surface 127b, and the spring 126 is compressed.

Next, referring to FIG. 20, when the inner door is completely closed to the tub, the fastening lever 166 is further advanced, and accordingly, the hook 123 is further rotated. At this time, the site | part of the uneven surface 127 which the guide protrusion 124a presses becomes the 2nd concave surface 127c. And, the direction of the groove of the hook 123 is perpendicular to the direction in which the door is closed, the hook 123 is in a complete fastening state with the fastening lever 166. Therefore, the tub and the inner door remain locked until the user pulls the outer door to transmit the force to the locking lever 166 in the direction in which the door is opened.

On the other hand, when the hook 123 is rotated by a predetermined angle or more, the torsion spring 125 connected to the inside of the lever coupling portion 122 and the hook 123, the hook 123 by the rotational force by the elastic force acts on the hook 123 To help rotate).

As described above, the hook 123 is rotated by pushing the fastening lever 166 to fasten the hook 123 and the fastening lever 166, and the inner side for pressing and fixing the hook 123 by using the elasticity of the spring 126. Since the fastening structure of the door 160 and the tub 120 has a relatively simple configuration, it can be manufactured slim and can be applied to the fastening structure in a narrow space. In addition, the fastening structure is not limited to the double door structure, any structure may be applied to fastening two assemblies.

On the other hand, in the above description, the drum washing machine rotates about a horizontal axis and performs washing by dropping, but mainly the drum washing machine is only described as an example, and the components disclosed in the present invention have a tub rotating from side to side to laundry. It can be applied to many types of washing machines, such as a washing machine using frictional force between each other, a washing machine using steam, and the like.

As described above, the present invention is provided with an outer door for opening and closing the cabinet and the inner door for opening and closing the tub, and the rotation axis of the outer door and the rotation axis of the inner door to be concentric to the space between the cabinet and the tub compared to the conventional Make it more secure. On the other hand, the elastic force of the torsion spring is applied to the hinge for rotating the door to help open and close the door.

In addition, the present invention by operating the lever interlocking the outer door and the inner door according to the washing operation state can be opened and closed together to the inner door only by opening and closing the outer door. The interlocking structure provided by the present invention includes a hook-shaped connecting lever provided in the outer door and controlled according to an operating state of the washing machine, and a lever fastening part provided in the inner door and the connecting lever is inserted into the groove and fastened.

In addition, the present invention provides a fastening structure for forming a fastening state or releasing the fastening state between the inner door and the tub by rotating the hook of the tub by the fastening lever of the inner door that moves according to the opening and closing of the user's door. In this case, since the hook is fixed by the elastic force of the spring, the tub and the inner door may maintain a fastening state or a fastening state until the user has an additional motion.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. I will understand.

Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

100: washing machine 110: cabinet
120: tub 122: lever fastening portion
123: hook 124: spring guide
125: torsion spring 126: spring
127: uneven surface 127a: first concave surface
127b: convex surface 127c: second concave surface
130: drum 140: outer door
141: door handle 142: first hinge support
143: first hinge 143a: first hinge rod
143b: first hinge plate 144: interlocking control unit
145: connecting lever 146: power generating unit
147: first gear 148: second gear
149: third gear 150: torsion spring
151: limit switch 160: inner door
161: second hinge support 162: second hinge
162a: second hinge rod 162b: second hinge plate
163: shaft 164: torsion spring
165: lever fastening portion 166: fastening lever
170: fixed point 180: extension line

Claims (19)

Cabinet;
A tub provided inside the cabinet to accommodate washing water;
An outer door that opens and closes a front surface of the cabinet by a rotation formed about a first rotational shaft;
A first hinge rod having one side connected to the first rotation shaft and the other side connected to the outer door, the first hinge rotating the outer door about the first rotation shaft;
An inner door that opens and closes the front surface of the tub by a rotation formed around a second rotation shaft; And
A second hinge rod having one side connected to the second rotation shaft and the other side connected to the inner door, the second hinge rod having a length different from that of the first hinge rod, and rotating the inner door about the second rotation shaft. Includes 2 hinges,
And a first axis of rotation of the outer door and a second axis of rotation of the inner door are substantially concentric.
The washing machine according to claim 1, wherein the outer door and the inner door are connected by interlocking means so that opening and closing is interlocked.
The washing machine according to claim 1 or 2, wherein the outer door and the inner door are opened and closed at regular intervals.
The washing machine according to claim 1 or 2, wherein the washing machine is
Further comprising a first hinge support fixed to the cabinet,
And the first hinge is coupled to the outer door and supported and rotated by the first hinge support.
The washing machine according to claim 4, wherein the first hinge is fastened to a protrusion of the first hinge support and rotates the protrusion as the first rotation axis.
The washing machine according to claim 1 or 2, wherein the washing machine is
Further comprising a second hinge support fixed to the tub,
And the second hinge is coupled to the inner door and supported and rotated by the second hinge support.
The method of claim 6, wherein the second hinge and the second hinge support is fastened by a shaft passing through the second hinge and the second hinge support, the second hinge rotates the shaft as a second axis of rotation, washer.
The washing machine according to claim 6, wherein a torsion spring is connected between the second hinge and the second hinge support.
The washing machine according to claim 8, wherein the elastic force of the torsion spring acts on the second hinge in a direction in which the door is opened or in a direction in which the door is closed according to the rotation state of the second hinge.
10. The method of claim 9, wherein the second hinge is further rotated in the direction of the door opening than the extension line on the basis of the extension line connecting the fixed point and the second rotation axis of the second hinge support portion to which one side of the torsion spring is fixed. When the elastic force of the torsion spring acts on the rotation of the second hinge in the direction of the door opening, washing machine.
10. The method of claim 9, wherein the second hinge is further rotated in the direction in which the door is closed than the extension line on the basis of the extension line connecting the fixed point of the second hinge support portion and the second rotation axis to which one side of the torsion spring is fixed. If the torsion spring's elastic force acts on the rotation of the second hinge in the direction in which the door is closed.
The method of claim 1, wherein the outer door is
And a linkage control unit controlling whether the linkage between the outer door and the inner door depends on the driving state of the washing machine.
The method of claim 12, wherein the inner door is
The washing machine further comprises a lever fastening part having a groove for connecting with the interlocking control part.
The method of claim 13, wherein the interlocking control unit
A connection lever for connecting the outer door and the inner door,
When connecting the outer door and the inner door when the connection lever is rotated in the first direction so that one side of the connection lever is inserted into the groove of the lever fastening portion and fastened, and the connection between the outer door and the inner door is released. Washing the connecting lever in a direction opposite to the first direction.
15. The washing machine according to claim 14, wherein the interlock control further comprises a solenoid piston pump for operating the link lever.
The washing machine according to claim 14, wherein the linkage control unit further includes a motor for operating the connection lever.
The method of claim 1, wherein the inner door is
The washing machine further comprises a fastening lever for fastening the inner door and the tub.
The method of claim 17,
The tub further includes a lever fastening portion to which the fastening lever is inserted and fastened.
The method of claim 18, wherein the lever fastening portion
A hook which is rotated by a fastening lever to be inserted and fastened to the fastening lever, the hook having an uneven surface at one end thereof; And
A spring guide having a guide protrusion for pressing and fixing the hook by an elastic force of a spring and having a portion of a concave-convex surface pressed according to the rotation of the hook;
Washing machine comprising a.

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