KR20180057484A - Washing Machine - Google Patents

Abstract

The present invention provides a washing machine. A washing machine comprises: a cabinet; a tub arranged in the inside of the cabinet; at least one suspension device configured to reduce vibrations of the tub, and to connect the tub to the cabinet so that the tub is supported on the cabinet; and a position guide device having one end connected to the at least one suspension device and the other end connected to the tub, and configured to limit a movement range in the horizontal direction of the tub.

Description

Washing Machine {Washing Machine}

The present disclosure relates to a structure of a washing machine capable of restricting the movement of the tub and preventing the vibration of the tub from being transmitted to the cabinet.

2. Description of the Related Art Generally, a washing machine includes a cabinet forming an outer appearance of a washing machine, a tub disposed in the cabinet for storing water, and a washing tub disposed in the tub for receiving the laundry. The laundry is washed by the water stream. Such a washing machine performs a washing process for separating dirt from the laundry, a rinsing process for washing the laundry, and a dewatering process for dewatering the wet laundry.

Particularly, in the dehydration process, the washing tub is rotated at a high speed, and the washing tub may perform a washing motion according to the distribution of laundry contained in the washing tub. Such washing movement of the washing tub causes vibration of the tub, and a suspension device is generally provided between the tub and the cabinet so that the vibration of the tub is not transmitted to the cabinet.

However, when the laundry contained in the washing tub is unevenly distributed to one side, the washing movement of the washing tub is out of the normal range, leading to the transient vibration of the tub, and the displacement of the tub is increased so that the tub, And also conflict with. Therefore, in order to prevent the tub from colliding with the cabinet due to the vibration, the cabinets and the tub are sufficiently separated from each other, or a buffer member such as a sponge is attached to the inside of the cabinet.

However, when the space between the cabinet and the tub is widened, the overall size of the washing machine is increased. In addition, a method of attaching the buffer member to the inner wall of the cabinet requires a separate working process and increases the material cost.

An object of the present invention is to provide a washing machine having a structure for restricting the movement range of the tub according to the vibration and preventing the vibration of the tub from being transmitted to the cabinet in order to solve such a problem.

According to another aspect of the present invention, there is provided a washing machine including a cabinet, a tub disposed inside the cabinet, at least one suspension device for attenuating vibrations of the tub and connecting the tub to the cabinet so that the tub is supported in the cabinet, And a position guiding device connected to the at least one suspension device at one end and connected to the tub at the other end to limit the horizontal movement range of the tub.

In the washing machine according to an embodiment of the present disclosure, the position guiding device may include a cylinder having a space therein, at least a part of which is located in the space of the cylinder, and a remaining part of the stopper is located outside the cylinder .

In the washing machine according to an embodiment of the present invention, the stopper is formed at the end of at least a part of the stopper located in the space inside the cylinder, and the end of the remaining part of the stopper located outside the cylinder is provided with the suspension device A suspension bar fastening part connecting the suspension bar included therein may be formed.

In the washing machine according to an embodiment of the present invention, one end of the cylinder further includes a stopper insertion hole through which the stopper moves, and the other end of the cylinder has the tub fixing hole. Both ends of the cylinder are fixed to the outside of the tub A tub fastening portion rotatably engaged with the formed position guide device fastening portion can be fitted.

In the washing machine according to an embodiment of the present disclosure, the tub fixing portion may be fitted to the cylinder so that the cylinder rotates the tub fixing portion with a rotation axis.

In the washing machine according to an embodiment of the present disclosure, the stopper may include a first absorbing member disposed adjacent to the retaining portion, and a second absorbing member disposed adjacent to the suspension bar securing portion.

In the washing machine according to an embodiment of the present disclosure, the cylinder may be movable between a first position in contact with the first absorbent member and a second position in contact with the second absorbent member.

In the washing machine according to one embodiment of the present disclosure, the suspension bar fastening portion includes a first member having a first accommodating portion into which the stopper can be inserted, and a second member having a second accommodating portion to which the suspension bar is fastened can do.

In the washing machine according to the embodiment of the present disclosure, the second member may further include a protrusion, and the first member may further include a groove that can be fitted with the protrusion of the second member, And can be coupled to the first member so as to be rotatable with the protruding portion as a rotation axis.

In the washing machine according to an embodiment of the present disclosure, the second receiving portion may be fastened to be movable along the suspension bar.

In the washing machine according to an embodiment of the present disclosure, the stopper may include a first absorbing member disposed on a surface with respect to the engaging portion, and a second absorbing member disposed on the opposite surface.

In the washing machine according to one embodiment of the present disclosure, the position guide device may restrict the distance between the suspension device and the tub to a predetermined range.

According to another aspect of the present invention, there is provided a washing machine including a cabinet, a tub disposed inside the cabinet, a suspension bar connecting the tub to the cabinet so that the tub is supported by the cabinet, And a position guiding device including a longitudinal moving part connected to the suspension bar, and a friction member disposed inside the longitudinal moving part and surrounding the suspension bar, wherein the position guiding device is configured such that the longitudinal moving part moves the suspension bar Therefore, the movement can be restricted by the friction member when moving.

In the washing machine according to an embodiment of the present disclosure, one end of the transverse moving part is formed with a pair of arms, and the longitudinal moving part includes projections on the outer side surface, and the projections are provided on the pair of arms So that the transverse moving part and the longitudinal moving part can be combined.

In the washing machine according to an embodiment of the present disclosure, the position guiding device is fastened to the tub and the suspension bar, and a projection provided on the outer side surface of the longitudinal moving part is inserted into an opening formed in the arm of the transverse moving part, The longitudinal moving part and the transverse moving part can be fastened at an obtuse angle.

In the washing machine according to an embodiment of the present disclosure, the longitudinal moving portion further includes a friction member insertion portion, and the friction member may be disposed at least in a partial region of the friction member insertion portion.

In the washing machine according to an embodiment of the present disclosure, the friction member may be arranged to be movable in the friction member insertion portion.

In the washing machine according to the embodiment of the present disclosure, the opening formed in the arm of the transverse moving part is elongated in the direction from the central part of the transverse moving part toward the pair of arms, and disposed at one inner side of the opening And may include a first absorbent member and a second absorbent member disposed at the other end located in the opposite direction of the one end.

In the washing machine according to one embodiment of the present invention, the longitudinal moving part may include a hole formed in a first member provided with a hole through which the suspension bar can pass, and a hole through which the suspension bar can pass The projections included in the second member may be fastened to form the longitudinal moving part.

According to another aspect of the present invention, there is provided a washing machine including a cabinet, a tub disposed inside the cabinet, at least one suspension device for attenuating vibrations of the tub and connecting the tub to the cabinet so that the tub is supported in the cabinet, The movement of the tub may be restricted by using a position guide device connected to the at least one suspension device at one end and connected to the tub at the other end to limit the movement range of the tub, Can be prevented from being transmitted to the cabinet.

1 is a perspective view of a washing machine according to an embodiment of the present disclosure;
2 is a cross-sectional view of a washing machine according to an embodiment of the present disclosure;
3 is a perspective view illustrating a tub, a suspension device, and a position guide device of a washing machine according to an embodiment of the present disclosure.
4 is a plan view showing a tub, a suspension device, and a position guide device of a washing machine according to an embodiment of the present disclosure.
5 is a perspective view illustrating a washing machine position guiding apparatus according to an embodiment of the present disclosure.
6 is a cross-sectional view of the washer position guide device according to one embodiment of the present disclosure;
7 and 8 are views for explaining a situation in which the length of the position guide device becomes longer based on the movement of the tub generated in the washing machine according to the embodiment.
9 and 10 are views for explaining a situation in which the length of the position guide device is reduced based on the movement of the tub generated in the washing machine according to the embodiment.
11 is a graph comparing the case where the washing machine is provided with the position guiding device and the case where the washing machine does not have the position guiding device.
12 is a view for explaining a situation where a position guiding device in a washing machine according to an embodiment of the present disclosure blocks vibration of a tub from being transmitted to a cabinet.
13 is a graph comparing the case where the washing machine is provided with the position guiding device and the case where the washing machine does not have the position guiding device according to an embodiment of the present disclosure.
14 is a perspective view showing another embodiment of the washing machine position guiding device according to the embodiment of the present disclosure.
FIG. 15 is a view showing a tub, a suspension device, and a position guide device of a washing machine according to another embodiment.
16 is a view illustrating a position guide apparatus according to an embodiment.
17A and 17B are views for explaining the movement of the tub when the washing machine according to an embodiment proceeds the washing cycle.
18A and 18B are views for explaining a process for reducing the travel distance of the tub by the position guiding device according to one embodiment.
19 is a graph showing a comparison between the case where the position guiding device according to one embodiment is installed in the washing machine and the case where the position guiding device is not installed.
20 is a view for explaining a situation where a position guiding device in a washing machine according to an embodiment blocks transmission of vibration of a tub to a cabinet.
FIG. 21 is a graph comparing the case where the washing machine is provided with the position guiding device and the case where the washing machine does not have the position guiding device.
22 is a perspective view showing another embodiment of the lateral movement part included in the position guide device according to the embodiment.
23 is a view showing another embodiment of the longitudinal moving part included in the position guiding device according to the embodiment.

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. It is to be understood that the embodiments and terminologies used herein are not intended to limit the invention to the particular embodiments described, but to include various modifications, equivalents, and / or alternatives of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar components. The singular expressions may include plural expressions unless the context clearly dictates otherwise. In this document, the expressions "A or B" or "at least one of A and / or B" and the like may include all possible combinations of the items listed together. Expressions such as " first, "" second," " first, "or" second, " But is not limited to those components. When it is mentioned that some (e.g., first) component is "(functionally or communicatively) connected" or "connected" to another (second) component, May be connected directly to the component, or may be connected through another component (e.g., a third component).

In this document, the term " configured to (or configured) to "as used herein is intended to encompass all types of hardware, software, , "" Made to "," can do ", or" designed to ". In some situations, the expression "a device configured to" may mean that the device can "do " with other devices or components. For example, a processor configured (or configured) to perform the phrases "A, B, and C" may be implemented by executing one or more software programs stored in a memory device or a dedicated processor (e.g., an embedded processor) , And a general purpose processor (e.g., a CPU or an application processor) capable of performing the corresponding operations.

1 is a perspective view of a washing machine according to an embodiment of the present disclosure;

Referring to FIG. 1, a cabinet 12, which forms an outer appearance of the washing machine 1, is a substantially rectangular parallelepiped having upper and lower openings. The cabinet 12 includes left and right side panels 12b and 12d, a front panel 12a, 12c. A top cover 14 having an inlet for introducing laundry into a washing tub (not shown) is coupled to the upper portion of the cabinet 12, and a door 10 for opening and closing the laundry loading port may be coupled to the top cover 14 . A control panel 11 for inputting operation and control conditions of the washing machine 1 may be installed at one side of the top cover 14. [ Hereinafter, the direction of the arrow 13 will be described as the front face of the cabinet 12 for convenience of explanation.

2 is a cross-sectional view of a washing machine according to an embodiment of the present disclosure;

2, a cabinet 12 forming an outer appearance of the washing machine is provided with a tub 21 in which wash water is stored, a washing tub 22 rotatably disposed in the tub 21, And a pulsator (23) disposed in the interior of the water tank (22) to generate water flow.

In the upper portion of the cabinet 12, an inlet 24 may be formed to allow laundry to be introduced into the washing tub 22. The inlet 24 can be opened or closed by a door 10 installed on the upper portion of the cabinet 12. [ The tub 21 can be supported in the cabinet by the suspension device 50.

A water supply pipe 25 for supplying wash water to the tub 21 may be installed at an upper portion of the tub 21. One side of the water supply pipe 25 may be connected to an external water supply source and the other side of the water supply pipe 25 may be connected to the detergent supply device 26. The water supplied through the water supply pipe 25 can be supplied to the inside of the tub 21 together with the detergent via the detergent supply device 26. The water supply pipe (25) is provided with a water supply valve (27) to control the supply of water.

The washing tub 22 is provided in a cylindrical shape with an open top, and a plurality of dewatering holes 28 may be formed in the side surface thereof. A balancer 29 may be mounted on the upper portion of the washing tub 22 to allow the washing tub 22 to rotate stably during high-speed rotation.

A motor 30 for generating a driving force for rotating the washing tub 22 and the pulsator 23 is provided outside the tub 21 and a driving force generated from the motor 30 is transmitted to the washing tub 22 and the pulsator 23 The power transmission device 31 can be provided at the same time.

The washing tub 22 is coupled to the hollow dehydrating shrink 32 and the washing shaft 33 installed in the hollow portion of the dewatering shaft 32 is coupled to the pulsator 23 through a washing shaft coupling portion . The motor 30 can simultaneously or selectively transmit the driving force to the washing tub 22 and the pulsator 23 according to the ascending and descending operation of the power transmitting device 31. [

The power transmission device 31 includes an actuator 34 for generating a driving force for transmitting power, a rod section 35 that linearly moves according to the operation of the actuator 34, And a clutch unit 36 that rotates in accordance with the operation of the control unit 35.

A drain port 37 is formed at the bottom of the tub 21 to discharge the washing water stored in the tub 21 and a drain port 37 may be connected to the first drain pipe 38. The first drain pipe (38) may be provided with a drain valve (39) for controlling drainage. The outlet of the drain valve 39 may be connected to a second drain pipe 40 for discharging the wash water to the outside.

FIG. 3 is a perspective view illustrating a tub, a suspension device, and a position guide device of a washing machine according to an embodiment of the present disclosure. FIG. 4 is a perspective view illustrating a tub, a suspension device, Fig.

3 and 4, the suspension device 50 may be provided inside a cabinet (e.g., the cabinet 12 of Fig. 1) to attenuate the vibration of the tub 21. Fig. Specifically, the suspension device 50 includes a first holder 51 formed on the inner surface of the cabinet (e.g., the cabinet 12 shown in Fig. 1) and a second holder 52 formed on the outer lower surface of the tub 21, So that vibration and shock transmitted from the tub 21 can be buffered. The positions of the first holder 51 and the second holder 52 may be changeable.

The suspension device 50 may include a suspension cap 53, a suspension bar 54, and a spring 55. However, it is not limited thereto. The suspension device 50 may further include or delete components to enhance the effect of mitigating vibration and shock transmitted from the tub 21. [

The spring 55 may be provided at a lower portion of the suspension bar 54 and may function to buffer and attenuate vibrations and shocks by shrinking and relaxing due to vibration and impact transmitted from the tub 21. [

The suspension device 50 may serve to attenuate vibration in the vertical direction (Z-axis) and vibration in the horizontal direction (X, Y plane) according to the installation angle, Direction vibration damping effect.

One end of the position guiding device 100 may be mounted to the tub 21 and the other end may be connected to one point of the suspension bar 54 of the suspension device 50.

The position guiding device 100 may limit the horizontal movement of the tub 21 and thus the suspension device 50 may be installed close to vertical so that the tub 21 may be installed inside the cabinet (e.g., the cabinet 12 shown in Fig. Can be increased. As a result, even if the tub 21 and the cabinet (for example, the cabinet 12 in Fig. 1) are brought close to each other, the movement range in the planar direction can be reduced. For example, the cabinet 12 of Fig. 1) can be prevented from contacting or generating noise.

FIG. 5 is a perspective view illustrating a washing machine position guiding apparatus according to an embodiment of the present disclosure, and FIG. 6 is a sectional view of a washing machine position guiding apparatus according to an embodiment of the present disclosure.

5 and 6, the position guiding device 100 includes a tub fixing part 110, a cylinder 120, a stopper 130, an absorbing member 140, and a suspension bar coupling part 150 .

The tub fixing portion 110 can connect the tub 21 and the cylinder 120 of the position guiding device 100. [ The tub fixing part 110 is inserted into a tub fixing part insertion hole 121 formed at one end of the cylinder 120 in a state where one end of the tub fixing part 110 is engaged with a position guiding device fastening part (not shown) formed outside the tub 21 Can be. The cylinder 120 can rotate with the tub fixing portion 110 as a rotation axis in a state where the tub fixing portion 110 is fitted.

The cylinder 120 has a tub fixing part insertion hole 121 at one end thereof and a stopper insertion hole 122 at which the stopper 130 can be inserted at the other end have. The tub retaining hole 121 may be formed along the Z axis, and the stopper insertion hole 122 may be formed in the X, Y plane perpendicular to the Z axis. However, the arrangement of the tub retainer insertion hole 121 and the stopper insertion hole 122 is not limited to this, and may be formed at various positions. The cylinder 120 may have a space 123 in which at least a part of the stopper 130 may be located. The space 123 in which at least a part of the stopper 130 can be positioned can be formed long along the X axis.

A part of the stopper 130 may be located inside the cylinder 120 and a part of the stopper 130 may be fitted to the stopper insertion hole 122 of the cylinder 120 and may be located outside the cylinder 120. The stopper 130 can perform linear motion along the space 123 inside the cylinder 120. [

A stopper 131 may be provided at an end of a part of the stopper 130 located inside the cylinder 120. [ The stopper 130 may not be disengaged from the cylinder 120 even if the stopper 130 makes a linear reciprocating motion in the inner space 123 of the cylinder 120. [

The suspension bar fastening part 150 may be connected to an end of the rest of the stopper located outside the cylinder 120. The suspension bar fastening part 150 includes a first member 151 having a first accommodating part 152 to which the stopper 130 can be inserted and a second accommodating part 156 to which the suspension bar 54 can be fitted, And a second member 155 having a first end 155a and a second end 155b.

One end of the stopper 130 on the outside of the cylinder 120 can be fitted into the first receiving portion 152 of the first member 151 of the suspension bar fastener 150. The first member 151 may be provided with a hole 153 through which the second member 155 can be fitted. The protrusion 157 of the second member 155 can be fastened to the hole 153 of the first member 151. At this time, the second member 155 can be rotated about the protrusion 157 as an axis. The second member 155 may form the second receiving portion 156. The suspension bar 54 can be fitted into the second receiving portion 156. The suspension bar 54 can move in the Z-axis direction in a state where the suspension bar 54 is fitted in the second accommodating portion 156. [

The stopper 130 may include a first absorbent member 140a and a second absorbent member 140b. The first absorbent member 140a may be provided adjacent to the retaining portion 131, A second absorbing member 140b may be provided adjacent to the portion 150. [ The absorbing member 140 may be made of, for example, rubber or silicon. The absorbing member 140 is in contact with the suspension bar fastening portion 150 at the other end of the stopper 130 or the fastening portion 131 at one end of the stopper 130 while the cylinder 120 linearly moves, It can play a role of mitigating the noise generated by the noise.

The first absorbing member 140a is adjacent to the inner wall of the cylinder 120 because a portion of the stopper 130 inside the cylinder 120 is drawn out to the outside to increase the length of the position guiding device 100 . The second absorbing member 140b is adjacent to the outer wall of the cylinder 120 because the other part of the stopper 130 which is outside the cylinder 120 is drawn into the cylinder 120, May be the case where the length of the guide is reduced. The cylinder 120 may be movable between a first position where the length of the position guiding device 100 is long and a second position where the length of the position guiding device 100 is reduced.

The length in which the cylinder 120 can move based on the movement of the tub 21 is determined by the distance between the space 123 inside the cylinder 120 and the distance between the absorbing members 140a , 140b, respectively.

7 and 8 are views for explaining a situation in which the length of the position guide device becomes longer based on the movement of the tub generated in the washing machine according to the embodiment.

According to one embodiment, the tub 21 may be provided with at least one position guiding device 100 on its outer surface.

Referring to FIG. 7A, a washing machine (for example, the washing machine 1 shown in FIG. 1) may be provided with four position guiding devices 100a, 100b, 100c and 100d. The four position guiding devices 100a, 100b, 100c, and 100d may be installed outside the tub 21 at intervals of about 90 degrees. 5 and 6, one side of the position guiding device 100 is fastened to the tub 21 so as to be rotatable with respect to the Z axis, and the other side is coupled to the suspension bar 54 so as to be movable along the suspension bar 54. [ (Not shown).

According to one embodiment, the position guiding device 100 may be provided in a direction similar to the tangential direction of the outer surface of the tub 21 for efficient positional correction.

When the washing tub (for example, the washing tub 22 shown in Fig. 2) starts to rotate in this state, the tub 21 may move in the left and right directions (based on the X and Y planes) or a rolling phenomenon may occur have.

Specifically, when the washing machine (for example, the washing machine 1 of FIG. 1) starts the dewatering process, the washing machine (for example, the washing machine 1 of FIG. 1) can rotate the washing tub 22. The washing machine (e.g., the washing machine 1 of FIG. 1) can gradually improve the revolution per minute (rpm) of the washing tub (for example, the washing tub 22 of FIG. 2). For example, a washing machine (e.g., the washing machine 1 of FIG. 1) can increase the number of revolutions per minute of the washing tub 22 from 0 to 800 rpm. However, the number of revolutions per minute of the washing tub 22 is not limited thereto, and the number of revolutions per minute of the washing tub 22 may be higher or lower depending on the type of the washing machine (for example, the washing machine 1 shown in Fig. 1). The section for gradually increasing the revolution speed per minute of the washing machine (for example, the washing machine 1 of FIG. 1) of the washing machine (for example, the washing machine 22 of FIG. 2) may be defined as an overdetermined section, for example.

According to one embodiment, when the washing tub (for example, the washing tub 22 in Fig. 2) is rotated, the tub 21 may, for example, generate six motions. The six movements may include, for example, movement in the X-axis, Y-axis, and Z-axis directions and movement in the X, Y, and Z axes.

When the number of revolutions per minute of the washing tub (for example, the washing tub 22 shown in FIG. 2) is about 100 rpm, the tub 21 may move leftward and rightward in the X and Y planes. Further, when the rotation speed per minute of the washing tank (for example, the washing tub 22 of FIG. 2) is approximately 250 rpm, the tub 21 may experience rolling phenomenon with respect to the Z axis. However, the movement of the tub 21 caused by the rotation of the washing tub (for example, the washing tub 22 of FIG. 2) is not limited to this, and various types of movement may be generated in the tub 21 in an excessive section.

Referring to FIG. 7 (b), the tub 21 has moved in the + X axis direction. In this case, the position guiding device 100 may be elongated or contracted depending on each position.

For example, as the tub 21 moves in the + X-axis direction, the length of the first position guide device 100a increases and the length of the third position guide device 100c decreases. In addition, the lengths of the second position guide device 100b and the fourth position guide device 100d can be maintained similar to those of FIG. 7A. However, the lengths of the respective position guiding devices 100a and 100c may vary depending on the direction of movement of the tub 21, and may vary.

Referring to FIG. 8 (a), the length of the position guiding device 100a may be long based on the movement of the tub 21. FIG. That is, a part of the stopper 130 inside the cylinder 120 can be further drawn out of the cylinder 120 while the cylinder 120 moves on the + X axis.

Referring to FIG. 8 (b), the first absorbing member 140a can contact the inner surface of the cylinder 120 while the cylinder 120 further moves on the + X axis. Thus, the cylinder 120 can no longer move. When the stopper 130 and the inner surface of the cylinder 120 are in contact with each other, the stopper 130 and the cylinder 120 can reduce the noise due to the impact by the first absorbing member 140a.

The tub 21 can no longer move in the + X direction while the first absorbent member 140a and the inner surface of the cylinder 120 are in contact with each other. As described above, the movement of the tub 21 in the X, Y plane can be restricted by the position guiding device 100.

9 and 10 are views for explaining a situation in which the length of the position guide device is reduced based on the movement of the tub generated in the washing machine according to the embodiment.

9 (a), a washing machine (for example, the washing machine 1 of FIG. 1) may be provided with four position guiding devices 100a, 100b, 100c and 100d. The four position guiding devices 100a, 100b, 100c, and 100d may be installed outside the tub 21 at intervals of about 90 degrees. One side of the position guiding device 100 is fastened to the tub 21 so as to be rotatable with respect to the Z axis and the other side can be fastened to the suspension bar 54 so as to be movable along the suspension bar 54.

When the washing tub (for example, the washing tub 22 shown in Fig. 2) starts rotating in this state, the tub 21 may move in the left-right direction, or a rolling phenomenon may occur based on the Z axis.

Specifically, when the washing machine (for example, the washing machine 1 of FIG. 1) starts the dewatering process, the washing machine (for example, the washing machine 1 of FIG. 1) can rotate the washing tub 22. When the washing tub (for example, the washing tub 22 shown in Fig. 2) is rotated, six motions of the tub 21 may occur, for example. The six motions may include, for example, movement in the X-axis, Y-axis, and Z-axis directions and movement in the X-axis, Y-axis, and Z-axis.

When the number of revolutions per minute of the washing tub (for example, the washing tub 22 shown in Fig. 2) is approximately 100 rpm, the tub 21 may move left and right in the X and Y planes. Further, when the rotation speed per minute of the washing tank (for example, the washing tub 22 of FIG. 2) is approximately 250 rpm, the tub 21 may experience rolling phenomenon with respect to the Z axis.

Referring to FIG. 9 (b), the tub 21 has moved in the -X-axis direction. In this case, the position guiding device 100 may be elongated or contracted depending on each position.

For example, as the tub 21 moves in the -X-axis direction, the length of the first position guide device 100a may be reduced and the length of the third position guide device 100c may be increased. In addition, the lengths of the second position guiding device 100b and the fourth position guiding device 100d can be kept the same as in FIG. 9 (a). That is, each of the position guide devices 100a and 100c can be stretched or shrunk based on the moving direction of the tub 21. [

Referring to Fig. 10 (a), the length of the position guiding device 100a can be reduced based on the movement of the tub (e.g., the tub 21 in Fig. 2). That is, a part of the stopper 130, which was outside the cylinder 120, can be further inserted into the cylinder 120 while the cylinder 120 moves on the -X axis.

10 (b), the second absorbing member 140b can contact the outer surface of the cylinder 120 while the cylinder 120 further moves on the -X axis. Thus, the cylinder 120 can no longer move. When the stopper 130 and the outer surface of the cylinder 120 are in contact with each other, the stopper 130 and the cylinder 120 can reduce the noise due to the impact by the second absorbing member 140b.

The tub (for example, the tub 21 in Fig. 2) can no longer move in the -X direction while the second absorbent member 140b and the outer surface of the cylinder 120 are in contact with each other. As described above, the movement of the tub (e.g., the tub 21 in Fig. 2) in the X, Y plane can be restricted by the position guiding device 100.

Although only the movement of the tub 21 in the X direction has been described above, movement of the tub (e.g., the tub 21 in Fig. 2) in the Y axis direction is also limited by the position guiding device 100, The movement of the tub 21 in Fig. 2 in the Y-axis direction can be reduced.

11 is a graph comparing the case where the washing machine is provided with the position guiding device and the case where the washing machine does not have the position guiding device.

11, the X axis of the graph 1100 indicates the case 1110 in which the position guide device is installed and the case 1120 in which the position guide device is not installed, and the Y axis indicates the position of the tub (e.g., the tub 21 in FIG. 2) Displacement can be expressed. The graph 1100 is obtained by setting a weight of 1.0 kg in a washing tank (for example, the washing tub 22 in FIG. 2) and rotating the washing tub (for example, the washing tub 22 in FIG. 2) from 0 rpm to 800 rpm And the like.

According to one embodiment, when the position guiding device is not installed 1120, the tub (e.g., the tub 21 in Fig. 2) can move a distance of 31.80 mm in the lateral direction. When the position guide device is installed (1110), the tub (for example, the tub 21 shown in Fig. 2) can move a distance of 24.06 mm in the lateral direction. Compared with the case 1120 in which the position guide device is not provided, the tub (for example, the tub 21 shown in FIG. 2) does not move in the lateral direction by 7.74 mm and exhibits a 24.3% reduction in motion.

As described above, the movement of the tub (e.g., the tub 21 in Fig. 2) in accordance with the rotation of the washing tub (e.g., the washing tub 22 in Fig. 2) can be reduced using the position guiding device 100 described above.

12 is a view for explaining a situation where a position guiding device in a washing machine according to an embodiment of the present disclosure blocks vibration of a tub from being transmitted to a cabinet.

Referring to FIG. 12 (a), a washing machine (for example, the washing machine 1 of FIG. 1) may be provided with four position guiding devices 100a, 100b, 100c and 100d. The four position guiding devices 100a, 100b, 100c, and 100d may be installed outside the tub 21 at intervals of about 90 degrees. 5 and 6, one side of the position guiding device 100 is fastened to the tub 21 so as to be rotatable with respect to the Z axis, and the other side is coupled to the suspension bar 54 so as to be movable along the suspension bar 54. [ (Not shown).

As described above with reference to Figs. 7 to 10, when the washing tub (for example, the washing tub 22 in Fig. 2) starts rotating in this state, the tub 21 moves in the left- Can occur.

Further, according to the embodiment, when the number of revolutions per minute of the washing tub (for example, the tub 22 in Fig. 2) is maintained at 800 rpm, the movement of the tub 21 can be reduced. As described above, the section in which the washing period (for example, the washing tub 22 in FIG. 2) maintains a constant number of revolutions per minute after the transient period is termed can be defined as a normal section, for example. The vibration generated in the tub 21 is transmitted to the cabinet (for example, the cabinet 12 in Fig. 1) so that the vibration generated in the cabinet (e.g., the cabinet 12 shown in Fig. 1) Vibration may occur in the cabinet 12).

The position guiding apparatus 100 can prevent the vibration of the tub 21 from being transmitted to the cabinet (for example, the cabinet 12 of FIG. 1) by the movement of the stopper 130 located inside the cylinder 120.

12 (b), when the stopper 130 linearly moves in the cylinder 120 based on the movement of the cylinder 120, a stopper (not shown) is inserted into the space 123 in the cylinder 120 There is no member for imparting a frictional force to restrict the movement of the movable member 130. Therefore, in the normal section, the cylinder 120 moves along the X axis without contacting the first absorbing member 140a and the second absorbing member 140b, and vibrations generated in the tub 21 are transmitted to the suspension bar 54 It may not be delivered. The position guiding device 100 may not transmit the vibration of the tub 21 to the cabinet (for example, the cabinet 12 of Fig. 1) connected to the suspension bar 54. [

13 is a graph comparing the case where the washing machine according to the embodiment is provided with the position guiding device and the case without the position guiding device.

13, the X-axis of the graph 1310 indicates cases 1320, 1340, and 1360 in which the position guide apparatus is installed for each position of the cabinet in which vibration is measured, and cases 1330, 1350, and 1370 in which the position guide apparatus is not installed , And the Y axis may represent the displacement of the cabinet (e.g., cabinet 12 of FIG. 1). The graph 1310 is obtained by measuring a weight of 1.0 kg in a washing tank (for example, the washing tub 22 in FIG. 2) while rotating the washing tub (for example, the washing tub 22 in FIG. 2) at 800 rpm Can be the result.

According to one embodiment, a cabinet (e.g., the cabinet 12 of Fig. 1) is provided with a 0.46 < RTI ID = 0.0 > mm lateral vibration may be generated. When the position guide device is installed (1320), the cabinet (e.g., the cabinet 12 shown in Fig. 1) may generate a lateral vibration of 0.37 mm. Compared with the case 1330 in which the position guiding device is not provided, the vibration of the cabinet (e.g., the cabinet 12 in Fig. 1) is reduced by 19%.

If the position guide device is not provided (1350) to the left central portion of the cabinet (e.g. cabinet 12 of Fig. 1), a lateral vibration of 0.25 mm is applied to the cabinet (e.g. cabinet 12 of Fig. Lt; / RTI > When a position guide device is installed (1340), a lateral vibration of 0.28 mm may be generated in the cabinet (e.g., the cabinet 12 in Fig. 1). Compared with the case 1350 in which the position guide device is not installed, the vibration of the cabinet (for example, the cabinet 12 in Fig. 1) is increased by 12%.

If the position guide device is not installed (1370) relative to the upper left-hand side of the cabinet (eg cabinet 12 of FIG. 1), lateral vibration of 0.19 mm is applied to the cabinet (eg cabinet 12 of FIG. 1) Lt; / RTI > When the position guide device is installed (1360), a cabinet (e.g., the cabinet 12 shown in Fig. 1) may generate a lateral vibration of 0.17 mm. Compared with the case 1370 in which the position guide device is not installed, the vibration of the cabinet (e.g., the cabinet 12 in Fig. 1) is reduced by 10%.

Comparing the cases 1320, 1340, and 1360 in which the position guide device is installed at various positions of the cabinet 12 and the cases 1330, 1350, and 1370 in which the position guide device is not installed, The vibration of the cabinet (for example, the cabinet 12 of Fig. 1) is increased or decreased, resulting in a deviation. However, the vibration of the cabinet (for example, the cabinet 12 of Fig. 1) does not cause a large difference in the conventional vibration level. That is, it can be seen that the installation of the position guiding device 100 does not greatly affect the vibration of the cabinet (for example, the cabinet 12 of FIG. 1).

Thus, in the normal section, the position guiding device 100 does not transmit the vibration generated in the tub (for example, the tub 21 in Fig. 2) to the suspension bar (for example, the suspension bar 54 in Fig. 3) This allows the vibration of the tub (e.g., the tub 21 of FIG. 2) to be transmitted to the cabinet (e.g., the cabinet 12 of FIG. 1) connected to the suspension pen bar (e.g., the suspension bar 54 of FIG. 3) I can not.

14 is a perspective view showing another embodiment of the washing machine position guiding device according to the embodiment of the present disclosure.

The description of the basic configuration of the position guiding device has been described above with reference to FIGS. 5 and 6. Therefore, the same description will be omitted and only differences will be described.

According to one embodiment, the stopper 130 may include a first absorbent member 1410 and a second absorbent member 1420. Both the first absorbent member 1410 and the second absorbent member 1420 can be located inside the cylinder 120. The first absorbent member 1410 and the second absorbent member 1420 may be provided on the front and back sides, for example, with respect to the engagement portion 131.

According to one embodiment, since the plurality of absorption members 1410 and 1420 are all located inside the cylinder 120 and the performance of the absorption members 1410 and 1420 is lowered due to external moisture or the like, The damage can be reduced. The absorbing members 1410 and 1420 may be made of, for example, rubber or silicon. The absorbing members 1410 and 1420 can serve to mitigate the impact noise generated by the contact when the stopper 130 contacts the cylinder 120 while linearly moving along the cylinder inserting hole 122.

The situation where the first absorbent member 1410 is adjacent to the first inner wall 1430 of the cylinder 120 may be the case where the length of the position guiding device 100 is long, The position adjacent to the second inner wall 1440 of the guide member 120 may be the case where the length of the position guiding device 100 is reduced.

FIG. 15 is a view showing a tub, a suspension device, and a position guide device of a washing machine according to another embodiment.

The detailed description of the tub 21 and the suspension device 50 shown in FIG. 15A is omitted in FIG. 3 because it has been described in detail with reference to FIG.

Referring to FIG. 15A, the position guide device 1500 may be installed at a position similar to the position guide device 100 described in FIG. At least one position guiding device 1500 may be provided on the outer surface of the tub 21. [

One end of the position guide device 1500 may be mounted to the tub 21 and the other end may be connected to a point of the suspension bar 54 included in the suspension line device 50.

15B is a side view showing the tub 21, the suspension device 50, and the position guide device 1500 of the washing machine (e.g., washing machine 1 of FIG. 1).

Referring to FIG. 15 (b), the position guide device 1500 can be fastened to the tub 21 using the tub fastening rods 1540. For example, the tub fastening rod 1590 is inserted into the tub fastening rod insertion hole 1520 and the position guide fastening portion 1590 located at one end of the position guide device 1500, 21).

Specifically, the position guide device fastening portion 1590 may include a first member 1591 and a second member 1592 each having a hole into which the tub fastening rods 1540 can be inserted. The tub fastening rod insertion hole 1520 of the position guide device 1500 is positioned between the first member 1591 and the second member 1592 of the position guide device fastening portion 1590 and the tub fastening rod 1540 is positioned between the first member 1591 and the second member 1592, And the position guiding device 1500 may be inserted into the tub member 1591, the tub fastening bar insertion hole 1520 and the second member 1592 so as to be engaged with the tub 21. [

The first member 1591 and the second member 1592 are coupled to the outside of the tub 21 at an angle of 20 to 40 degrees with respect to the X, Y plane. Therefore, the position guiding device 1500 inserted between the first member 1591 and the second member 1592 to be engaged with the position guiding device fastening portion 1590 also has an angle of 20 to 40 degrees with respect to the X, Y plane And can be coupled with the tub 21.

16 is a view illustrating a position guide apparatus according to an embodiment.

16 (a) is a perspective view of the position guide device 1500. Fig. 16 (b) is a sectional view of the position guiding device.

16 (a), the position guiding device 1500 may include a transverse moving part 1510 and a longitudinal moving part 1530. [

According to one embodiment, one end of the transverse movement portion 1510 may include a pair of arms (arm 1512). The paired arms 1512 may each include an opening 1514. [ The opening 1514 may be elongated in the direction toward the arm 1512, for example, from the central portion of the transverse moving portion 1510.

The longitudinal movement portion 1530 can be engaged with the lateral movement portion 1510 using an opening 1514 formed in the arm 1512. [ For example, a pair of protrusions 1533 provided outside the longitudinal moving part 1530 is inserted into the opening 1514 of the lateral moving part 1510 so that the longitudinal moving part 1510 can move in the horizontal direction, Lt; RTI ID = 0.0 > 1510 < / RTI >

The other end of the transverse moving part 1510 may include a tub fastening rod insertion hole 1520 for coupling with the tub 21. [ According to one embodiment, the lateral movement portion 1510 reduces the thickness of the lateral movement portion 1510 relative to the other portion of the lateral movement portion 1510 with respect to the portion where the tub fastening rod insertion hole 1520 of the lateral movement portion 1510 is located The width can be narrowed.

The transverse moving part 1510 can be engaged with the tub 21 using the tub fastening rods 1540. 15 (b), the tub fastening rod insertion hole 1520 of the lateral movement part 1510 is connected to the first member 1591 of the position guide device fastening part 1590 and the second member 1591 of the position guide device fastening part 1590, Lt; RTI ID = 0.0 > 1592 < / RTI > At this time, the tub fastening rod 1540 is inserted into the first member 1591 of the position guide device fastening portion 1590, the tub fastening rod insertion hole 1520, and the second member 1592 of the position guide device fastening portion 1590 ). ≪ / RTI > Therefore, the lateral movement portion 1510 can be rotatably coupled to the tub 21 on the basis of the tub fastening rods 1540.

According to one embodiment, a rubber bearing 1522 may be positioned between the tub fastening rod 1540 and the tub fastening rod insertion hole 1520. The rubber bearing 1522 can reduce the friction generated when the transverse moving portion 1510 rotates about the tub fastening rods 1540.

Referring to FIG. 16 (b), a friction member 1534 may be included inside the longitudinal moving part 1530. The longitudinal moving part 1530 can be provided with a suspension bar insertion passage 1535 through which the first member 1531 and the second member 1532 can be coupled and the suspension bar 54 can be inserted have. As a result, the longitudinal moving portion 1530 can move along the suspension bar 54.

According to one embodiment, the longitudinal movement portion 1530 may provide a friction member insertion portion 1536 that surrounds a portion of the suspension bar insertion passage 1535. For example, the friction member insertion portion 1536 may be formed inside the longitudinal movement portion 1530 so as to have a diameter larger than the diameter of the circular suspension bar insertion passage 1535.

At least a part of the friction member inserting portion 1536 may be filled with the friction member 1534. The friction member 1534 may be disposed in the friction member insertion portion 1536 in such a manner as to surround a portion of the suspension bar 54. When the suspension bar 54 is inserted into the longitudinal moving part 1530, the friction member 1534 can contact the suspension bar 54. [ The kinetic energy of the longitudinal moving part 1530 is increased by the frictional force generated between the friction member 1534 and the suspension bar 54 when the longitudinal moving part 1530 moves along the suspension bar 54 Can be reduced. That is, the moving distance of the longitudinal moving part 1530 can be reduced compared with the case where the friction member 1534 is not provided.

According to one embodiment, the friction member 1534 may be filled without being fixed to the friction member insertion portion 1536. Further, the friction member 1534 may be filled only in a part of the friction member insertion portion 1536. [

In this case, for example, when the longitudinal moving part 1530 moves downward along the suspension bar 54, the friction member 1534 contacts the suspension bar 54 and moves in the friction member insertion part 1536 I can not. At this time, the longitudinal moving portion 1530 can move without limitation by the frictional force of the friction member 1534.

When the longitudinal moving part 1530 continues to move downward along the suspension bar 54 and the friction member 1534 contacts the inner end of the friction member insertion part 1536, (1530). In this case, the movement of the longitudinal moving part 1530 can be restricted by the frictional force generated between the friction member 1534 and the suspension bar 54. As a result, the moving distance of the longitudinal moving part 1530 can be reduced compared with the case where the friction member 1534 is not provided. The distance that the longitudinal moving part 1530 can move without restriction by the frictional force between the friction member 1534 and the steel ball bar 54 depends on the length of the region where the friction member 1534 is not filled in the friction member insertion portion 1536 ≪ / RTI >

17A and 17B are views for explaining the movement of the tub when the washing machine according to an embodiment proceeds the washing cycle.

When the washing stroke is progressed, the tub 21 may move in the left and right (X, Y axis directions).

Specifically, when the washing machine (for example, the washing machine 1 of Fig. 1) starts the dewatering process, the washing machine (for example, the washing machine 1 of Fig. 1) rotates the washing tub . The washing machine (e.g., the washing machine 1 of FIG. 1) can gradually improve the revolution per minute (rpm) of the washing tub (for example, the washing tub 22 of FIG. 2). For example, a washing machine (e.g., the washing machine 1 of FIG. 1) can increase the number of revolutions per minute of the washing tub (for example, the washing tub 22 of FIG. 2) from 0 to 800 rpm. The section for gradually increasing the revolution speed per minute of the washing machine (for example, the washing machine 1 of FIG. 1) of the washing machine (for example, the washing machine 22 of FIG. 2) may be defined as an overdetermined section, for example.

When the number of revolutions per minute of the washing tub (for example, the washing tub 22 in Fig. 2) is approximately 100 rpm, the tub 21 may move left and right moving in the X and Y planes.

17A is a top view of the tub 21, the position guide devices 1500a and 1500b, and the suspension device 50 before a motion occurs. The movement of the position guide device 1500 will be described using the first position guide device 1500a and the second position guide device 1500b.

17A is a view of the case where the tub 21 is moved in the + X direction.

17A and 17B, the first position guiding device 1500a and the second position guiding device 1500b, which are coupled to the tub 21, move along with the movement of the tub 21. [ Can be moved. For example, the lateral movement portion 1510a included in the first position guide device 1500a moves in the + X direction and the longitudinal movement portion 1530a moves in the downward direction (-Z Direction).

The lateral movement section 1510b included in the second position guide device 1500b moves in the + X direction and the longitudinal movement section 1530b moves in the upward direction (+ Z direction) along the suspension bar 54. [ . ≪ / RTI >

A rolling phenomenon may occur in which the tub 21 rotates relative to the Z axis while the tub 21 moves up and down during the washing cycle.

When the washing tub 22 starts to rotate, rolling of the tub 21 may occur. For example, when the number of revolutions per minute of the washing tub 22 is approximately 250 rpm, the tub 21 rotates with respect to the Z axis as the tub 21 moves up and down, Can occur. Accordingly, the tub 21 can simultaneously move in the left and right directions (X, Y plane) and in the vertical direction (Z axis).

17B is a top view of the tub 21, the position guide device 1500, and the suspension device 50 before the movement occurs.

17B is a view of the case where the upper side of the tub 21 is inclined to the left with respect to the Z axis.

17B and 17B, the first position guiding device 1500a and the second position guiding device 1500b (not shown) coupled to the tub 21 while the upper side of the tub 21 is inclined, ) Can also be moved. For example, the lateral movement portion 1510a included in the first position guide device 1500a moves in the -X-axis direction and the longitudinal movement portion 1530a moves in the upward direction (+) along the suspension bar 54, Z direction).

The lateral movement portion 1510b included in the second position guide device 1500b moves in the -X-axis direction and the longitudinal movement portion 1530b moves in the downward direction (-Z direction) along the suspension bar 54 ).

As described above with reference to FIGS. 17A and 17B, the longitudinal movement included in the position guide device 1500 moves along the suspension bar according to the movement of the tub 21. FIG. At this time, the travel distance of the tub can be reduced by the friction member included in the longitudinal moving part. That is, the kinetic energy due to the movement of the tub 21 can be reduced by the position guide device. This prevents the washing tub 21 from colliding with the cabinet surrounding the tub 21 (e.g., the cabinet 12 shown in Fig. 1).

Hereinafter, the detailed movement of the position guide device 1500 for reducing the movement of the tub 21 will be described.

18A and 18B are views for explaining a process for reducing the travel distance of the tub by the position guiding device according to one embodiment.

18A, an angle formed by the lateral moving portion 1510 coupled with the tub (e.g., the tub 21 of FIG. 15) and the longitudinal moving portion 1530 fitted to the suspension bar 54 (?) may exceed 90 degrees. For example, the angle? Between the transverse moving part 1510 and the longitudinal moving part 1530 may be between approximately 120 and 140 degrees.

When the lateral movement portion 1510 and the longitudinal movement portion 1530 are at an obtuse angle and movement (e.g., lateral movement) of the lateral movement portion 1510 occurs, the longitudinal movement portion 1530 can easily And can move toward the upper side or the lower side of the suspension bar 54 along the suspension bar 54. That is, since the transverse moving part 1510 and the longitudinal moving part 1530 are at an obtuse angle, when the transverse moving part 1510 is moved, the suspension bar 54 is bent by the longitudinal moving part 1530 It is possible to reduce the probability that the longitudinal moving unit 1530 will not move.

15, the tub fastening rod insertion hole 1520 of the position guiding device 1500 is inserted into the insertion hole 1520 of the position guiding device 1500 so that the transverse moving part 1510 and the longitudinal moving part 1530 can form an obtuse angle, The first member 1591 and the second member 1592 of the position guiding device fastening portion 1590 to be fitted can form an angle of 20 to 40 degrees with respect to the X axis.

Fig. 18A shows a state in which the tub 21 does not move as shown in Fig. 17A. In this case, the protrusion 1533, which is formed outside the longitudinal moving part 1530 and inserted in the opening 1514 of the lateral moving part 1510, may be located at the center of the opening 1514. In other words, the protrusion 1533 may not be in contact with one end or the other end inside the opening 1514.

According to one embodiment, as the tub 21 moves in the + X axis direction. The position guide device 1500 can also be moved in the + X axis direction.

18A, when the lateral movement portion 1510 of the position guide device 1500 moves in the + X axis direction, an opening 1514 (not shown) provided in the arm 1512 of the lateral movement portion 1510, The protrusion 1533 provided at the outer side of the longitudinal moving part 1530 can be contacted.

18A, when the lateral movement portion 1510 of the position guide device 1500 continues to move in the + X axis direction, one end of the opening 1514 is caused by the movement of the tub 21 And transmits the generated kinetic energy to the projection 1533. Due to the kinetic energy transmitted to the protrusion 1533, the longitudinal moving part 1530 can move to the upper side of the suspension bar 54 along the suspension bar 54.

In this case, as described above with reference to FIG. 16B, the longitudinal moving portion 1530 may include a friction member 1534 therein. The friction member 1534 may serve to reduce the kinetic energy generated in the tub 21 and transmitted to the longitudinal moving part 1530. As a result, the travel distance of the tub 21 is reduced compared with the case where the friction member 1534 is not provided, and the tub 21 is disposed outside the tub 21 (e.g., the cabinet 12 of Fig. 1) It may not collide.

According to another embodiment, while the tub 21 moves in the -X-axis direction. The position guide device 1500 can also be moved in the -X-axis direction.

18B, when the lateral movement portion 1510 of the position guide device 1500 moves in the -X-axis direction, the opening 1514 provided in the arm 1512 of the lateral movement portion 1510 The projection 1533 provided at the outer side of the longitudinal moving part 1530 can be contacted.

18B, when the lateral movement portion 1510 of the position guide device 1500 continues to move in the -X-axis direction, the other end of the opening 1514 is caused by the movement of the tub 21 And transmits the generated kinetic energy to the projection 1533. Due to the kinetic energy transmitted to the protrusion 1533, the longitudinal moving part 1530 can move to the lower side of the suspension bar 54 along the suspension bar 54.

In this case, as described above, the friction member 1534 may serve to reduce kinetic energy generated in the tub 21 and transmitted to the longitudinal moving unit 1530. [ As a result, the travel distance of the tub 21 is reduced compared with the case where the friction member 1534 is not provided, and the tub 21 is disposed outside the tub 21 (e.g., the cabinet 12 of Fig. 1) It may not collide.

19 is a graph showing a comparison between the case where the position guiding device according to one embodiment is installed in the washing machine and the case where the position guiding device is not installed.

19A is a graph comparing movement in the X and Y directions, and FIG. 19B is a graph comparing movements in the Z-axis direction.

The X-axis of the graph indicates the case where the position guide device is installed (1910) and the case where the position guide device is not installed (1920), and the Y axis can indicate the amount of movement of the tub (for example, the tub 21 of FIG. 2). The graph of FIG. 19 (a) is a graph in which a weight of 1.2 kg is placed inside a washing tank (for example, the washing tank 22 of FIG. 2) 22) may be a result of measurement while increasing the number of revolutions.

Referring to FIG. 19A, when the position guide device is not installed (1920), the tub (for example, the tub 21 in FIG. 2) can move a distance of 32.5 mm in the left-right direction. In the case where the position guiding device is installed (1910), the tub (for example, the tub 21 in Fig. 2) can move a distance of 17.7 mm in the lateral direction. Compared with the case 1920 in which the position guide device is not provided, the tub (for example, the tub 21 in FIG. 2) does not move a distance of 14.8 mm in the lateral direction, and shows a motion reduction rate of 46%.

Referring to FIG. 19 (a), when the position guide device is not provided (1940), the tub (for example, the tub 21 in FIG. 2) can move a distance of 20.2 mm in the front-rear direction. When the position guide device is installed (1930), the tub (for example, the tub 21 in Fig. 2) can move a distance of 16.7 mm in the front-rear direction. Compared with the case 1940 in which the position guide device is not provided, the tub (for example, the tub 21 shown in FIG. 2) does not move a distance of 3.5 mm in the back and forth direction and exhibits a motion reduction rate of 17%.

Referring to FIG. 19B, when the position guide device is not provided (1960), the tub (for example, the tub 21 in FIG. 2) can move a distance of 6.3 mm in the vertical direction. When the position guiding device is installed (1950), the tub (e.g., the tub 21 in Fig. 2) can move a distance of 4.8 mm in the vertical direction. Compared with the case 1960 in which the position guide device is not provided, the tub (for example, the tub 21 in FIG. 2) does not move a distance of 1.5 mm in the back and forth direction, and exhibits a motion reduction rate of 24%.

20 is a view for explaining a situation where a position guiding device in a washing machine according to an embodiment blocks transmission of vibration of a tub to a cabinet.

When the number of revolutions per minute of the washing tub (for example, the washing tub 22 in Fig. 2) is maintained at 800 rpm during the washing cycle, the movement of the tub 21 can be reduced. As described above, the section in which the washing period (for example, the washing tub 22 in FIG. 2) maintains the constant number of revolutions per minute after the transitional period is defined can be defined as the normal section.

The vibration generated in the tub 21 is transmitted to the cabinet (for example, the cabinet 12 in Fig. 1), and the vibration generated in the cabinet (e.g., Fig. 1 The vibration of the cabinet 12 may be generated.

At this time, the position guiding device 1500 can prevent the vibration of the tub 21 from being transmitted to the cabinet (e.g., the cabinet 12 in Fig. 1).

20, the projection 1533 of the vertical moving unit 1530 is rotated in the vertical direction by the opening 1514 (see FIG. 20) of the lateral moving unit 1510, when the number of revolutions per minute of the washing tank In the range of not touching the one end or the other end. The inside of the opening 1514 does not have a friction member for restricting the movement of the projection 1533. [ Therefore, the vibration of the tub 21 in the normal section may not be transmitted to the longitudinal moving section 1530. [ The position guiding device 1500 may not transmit the vibration of the tub 21 to the cabinet (for example, the cabinet 12 of Fig. 2) connected to the suspension bar 54. [

FIG. 21 is a graph comparing the case where the washing machine is provided with the position guiding device and the case where the washing machine does not have the position guiding device.

21, the X-axis of the graph 2100 indicates the case where the position guiding device is installed and the case where the position guiding device is not installed, according to the position on the cabinet (for example, the cabinet 12 of Fig. 1) And the Y axis may represent the moving distance of the cabinet (e.g., the cabinet 12 of Fig. 1). The graph 2100 is obtained by setting a weight of 1.2 kg in a washing tank (for example, the washing tank 22 in FIG. 2) and measuring the weight while rotating the washing tank (for example, the washing tank 22 in FIG. 2) at 800 rpm Can be the result.

According to one embodiment, a cabinet (e.g., cabinet 12 of FIG. 1) is provided with a guide guide (not shown) for a right center portion of a cabinet (e.g., cabinet 12 of FIG. 1) mm may be generated. In the case where the position guiding device is installed (2120), a cabinet (e.g., cabinet 12 in Fig. 1) may generate a lateral vibration of 0.73 mm. Compared with the case 2110 in which the position guiding device is not provided, the vibration of the cabinet (for example, the cabinet 12 in Fig. 1) shows a reduction rate of 13%.

When the cabinet (for example, cabinet 12 in Fig. 1) is not provided with a position guide device 2150 for the upper left corner of the cabinet (e.g. cabinet 12 in Fig. 1) May occur. When the position guiding device is installed (2160), the cabinet (e.g., the cabinet 12 in Fig. 1) may generate a lateral vibration of 0.15 mm. Compared with the case 2170 in which the position guide device is not provided, the vibration of the cabinet 12 shows a reduction rate of 6%.

The left center portion of the cabinet (for example, the cabinet 12 in Fig. 1) has a vibration level equivalent to that in the case where the position guide device is not provided (2130) and the case where the position guide device is installed (2140).

Thus, in the normal section, the position guiding device 1500 does not transmit the vibration generated in the tub (e.g., the tub 21 in Fig. 2) to the suspension bar (e.g., the suspension bar 54 in Fig. 3) This allows the vibration of the tub (e.g., the tub 21 of FIG. 2) to be transmitted to the cabinet (e.g., the cabinet 12 of FIG. 1) connected to the suspension pen bar (e.g., the suspension bar 54 of FIG. 3) I can not.

22 is a perspective view showing another embodiment of the lateral movement part included in the position guide device according to the embodiment.

Since the basic configuration of the position guiding device 1501 according to another embodiment is the same as that of the position guiding device 1500 of FIG. 15, the same description will be omitted and only differences will be described.

According to one embodiment, the first absorbing member 2221 and the second absorbing member 2222 may be provided at one end and the other end of the opening 2220 included in the transverse moving unit 2210. The first absorbing member 2221 and the second absorbing member 2222 may be made of, for example, rubber or silicon. The first absorbent member 2221 and the second absorbent member 2222 can mitigate the impact generated when the projection 2230 moves along the opening 2220 while being in contact with one end and the other end of the opening 2220 have.

23 is a view showing another embodiment of the longitudinal moving part included in the position guiding device according to the embodiment.

23 (a) and 23 (b), the longitudinal moving part 2330 according to another embodiment is provided with the insertion passage in which the suspension bar 54 can be inserted, The first member 2331 and the second member 2335 may be combined.

According to another embodiment, the first member 2331 may include a pair of arms 2334. [ The pair of arms 2334 may be provided with an engagement groove 2332 to which the projection 2336 provided on the second member 2335 can be fastened.

The second member 2335 is sandwiched between the pair of arms 2334 included in the first member 2331 so that the protrusion 2336 of the second member 2335 and the engagement groove 2332 of the first member 2331, And the first member 2331 and the second member 2335 are coupled to each other to serve as the longitudinal moving part 2330.

A protrusion 2333 inserted into the opening 2314 included in the transverse moving portion 2310 and fastening the longitudinal moving portion 2330 and the transverse moving portion 2310 is provided outside the second member 2335 .

The longitudinal moving part 2330 may include a friction member inserting part 2340 surrounding a part of the inside of the suspension bar inserting passage 2339. That is, the friction member insertion portion 2340 may be formed inside the longitudinal moving portion 2330 so as to have a diameter larger than the diameter of the circular suspension bar insertion passage 2339.

At least a part of the friction member inserting portion 2340 may be filled with the friction member 2341. The friction member 2340 may be disposed on the friction member inserting portion 2340 so as to surround a part of the suspension bar 54. [ When the suspension bar 54 is inserted into the longitudinal moving part 2330, the friction member 2341 can be brought into contact with the suspension bar 54. The kinetic energy of the longitudinal moving part 2330 can be reduced by the frictional force of the friction member 2341 when the longitudinal moving part 2330 moves along the suspension bar 54. [ That is, the moving distance of the longitudinal moving part 2330 can be reduced compared with the case where the friction member 2341 is not provided.

According to one embodiment, the friction member 2341 may be filled without being fixed to the friction member insertion portion 2340. Further, the friction member 2341 may be filled only in a part of the friction member insertion portion 2340.

In this case, for example, when the longitudinal moving part 2330 moves downward along the suspension bar 54, the friction member 2341 contacts the suspension bar 54 and moves in the friction member inserting part 2340 I can not. At this time, the longitudinal moving portion 2330 can move without limitation by the frictional force of the friction member 2341.

When the longitudinal moving part 2330 continues to move downward along the suspension bar 54 and the friction member 2341 comes into contact with the inner end of the friction member insertion part 2340, the friction member 2341 moves in the longitudinal direction And moves along with the portion 2330. In this case, the movement of the vertical moving part 2330 can be restricted by the frictional force generated between the friction member 2341 and the suspension bar 54. As a result, the moving distance of the longitudinal moving part 2330 can be reduced compared with the case where the friction member 2341 is not provided.

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 invention as defined by the appended claims. It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure.

Claims (19)

cabinet;
A tub disposed within the cabinet;
At least one suspension device for attenuating the vibration of the tub and connecting the tub to the cabinet so that the tub is supported in the cabinet; And
A position guide device connected to the at least one suspension device at one end and connected to the tub at the other end to limit a horizontal movement range of the tub; .
The method according to claim 1,
The position guiding device includes:
A cylinder having a space therein;
At least a part of which is located in the space of the cylinder, and the remaining part of which is located outside the cylinder; .
3. The method of claim 2,
A suspension part is formed at an end of at least a part of the stopper located in the space inside the cylinder and a suspension bar fastening part connected to a suspension bar included in the suspension device is formed at the end of the remaining part of the stopper located outside the cylinder Washing machine.
The method of claim 3,
One end of the cylinder has a stopper insertion hole through which the stopper moves;
The other end of the cylinder is connected to the tub fixing hole. Further comprising:
And a tub fixing part rotatably engaged with a position guide device fastening part formed at an outer side of the tub at both ends thereof.
5. The method of claim 4,
Wherein the tub fixing part is fitted in the cylinder so that the cylinder can rotate the tub fixing part with a rotation axis.
The method of claim 3,
The stopper
A first absorbing member disposed adjacent to the retaining portion, and a second absorbing member disposed adjacent to the suspension bar securing portion.
The method according to claim 6,
The cylinder
The first absorbent member being movable between a first position in contact with the first absorbent member and a second position in contact with the second absorbent member.
The method of claim 3,
The suspension bar fastening part
A first member having a first accommodating portion into which the stopper can be inserted, and a second member having a second accommodating portion to which the suspension bar is coupled.
9. The method of claim 8,
Wherein the second member further includes a protrusion, and the first member further includes a groove that can be fitted to the protrusion of the second member, and the second member rotates about the first member with the protrusion as a rotation axis A washing machine combined to enable rotation.
9. The method of claim 8,
And the second receiving portion is fastened so as to be movable along the suspension bar.
The method of claim 3,
The stopper
And a second absorbing member disposed on the opposite surface of the first absorbing member.
The method according to claim 1,
The position guiding device includes:
And limits a distance between the suspension device and the tub to a predetermined range.
cabinet;
A tub disposed within the cabinet;
A suspension bar connecting the tub and the cabinet so that the tub is supported in the cabinet; And
A position guiding device including a transverse moving part connected to the turbine, a longitudinal moving part connected to the suspension bar, and a friction member disposed inside the longitudinal moving part and surrounding the suspension bar; Lt; / RTI >
Wherein the position guiding device is restricted in movement by the friction member when the longitudinal moving part moves along the suspension bar.
14. The method of claim 13,
One end of the transverse moving part is formed with a pair of arms,
Wherein the longitudinal moving part includes protrusions on an outer side surface, the protrusions being inserted into openings respectively formed in the pair of arms so that the transverse moving part and the longitudinal moving part are combined.
15. The method of claim 14,
When the position guiding device is fastened to the tub and the suspension bar and a protrusion provided on an outer surface of the longitudinal moving part is inserted and fastened to an opening formed in the arm of the transverse moving part,
Wherein the longitudinal moving part and the lateral moving part are fastened together at an obtuse angle.
14. The method of claim 13,
The longitudinal moving part further includes a friction member insertion part inside,
Wherein the friction member is disposed at least in a partial region of the friction member insertion portion.
17. The method of claim 16,
Wherein the friction member is disposed so as to be movable in the friction member insertion portion.
16. The method of claim 15,
Wherein an opening formed in the arm of the transversely moving portion is elongated in a direction from the central portion of the transversely moving portion toward the pair of arms,
A first absorbing member disposed at one inner side of the opening, and a second absorbing member disposed at another end located opposite to the one end.
14. The method of claim 13,
Wherein the longitudinal moving part comprises:
Wherein a suspension groove included in a first member provided with a hole through which the suspension bar can pass is connected to a protrusion included in a second member provided with a hole through which the suspension bar can pass, .

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