Vibration reduction apparatus and clothing treatment apparatus equipped with same

Abstract

A vibration reduction apparatus according to an embodiment of the present invention comprises: a front connector inserted into the outer circumferential surface of a front damper supporting the bottom surface of the front side of a tub placed horizontally; a rear connector inserted into the outer circumferential surface of a rear damper supporting the bottom surface of the rear side of the tub from the rear of the front damper; and a sway bar, the front end of which is connected to the front connector and the rear end of which is connected to the rear connector, wherein both ends of the sway bar are connected to a base plate forming the bottom surface of a cabinet.

Description

Vibration reduction device and clothing processing device equipped therewith

[0001] The present invention relates to a vibration reduction device for suppressing vibration of a tub and a clothing treatment device equipped with the same.

[0002] A clothes treatment device including a washing machine includes a drum that is placed horizontally and rotates forward and backward by a motor, a tub that accommodates the drum inside, and a cabinet that accommodates the tub inside.

[0003] In addition, the lower part of the tub and the bottom of the cabinet are connected by a plurality of dampers, and the upper part of the tub is connected to the side wall of the cabinet by a plurality of springs. For example, the tub is supported inside the cabinet by two springs and four dampers.

[0004] When the drum above starts to rotate and is driven at a low speed of 500 rpm or less, excessive vibration occurs due to eccentricity of the laundry, and when driven at a high speed of 800 rpm or more, normal vibration occurs.

[0005] In detail, when the drum rotates while laundry is unevenly distributed inside the drum, vibration occurs due to eccentric rotation, and the eccentric rotation is transmitted to the tub. Therefore, a gap exists between the tub and the side wall of the cabinet to prevent the tub from hitting the side wall of the cabinet due to the eccentric rotation.

[0006] However, in order to increase the washing capacity while the dimensions of the cabinet are fixed, the diameter of the drum must be increased, which causes a problem of collision between the cabinet and the tub due to vibration.

[0007] To reduce vibration caused by this eccentric rotation, multiple dampers support the tub to suppress vibration. Conventional dampers have a constant damping force, and this constant damping force applies regardless of the drum's operating rpm. Therefore, excessive vibration at low speeds below 500 rpm can cause the tub to strike the cabinet's sidewalls (striking) or the washing machine to move (walking).

[0008] If a damper with a large damping force is used to suppress such excessive vibration, the vibration generated from the tub is transmitted to the cabinet more significantly at high speeds exceeding 800 rpm, which has the adverse effect of increasing vibration and noise.

[0009] In addition, in the case of the stabilizer presented in the prior art below, since the stabilizer is connected only to two suspensions and a tub, although the difference in relative change amount between the individual suspensions and the tub can be minimized, there is a disadvantage in that it cannot effectively block the collision between the side wall and the tub.

[0010] Prior art: Korean Patent No. 10-2458315 (October 17, 2022)

[0011] The present invention is proposed to improve the above problems.

[0012] In order to achieve the above object, a vibration reduction device according to an embodiment of the present invention comprises: a front connector inserted into the outer circumference of a front damper that supports the front-side bottom surface of a tub placed horizontally; a rear connector inserted into the outer circumference of a rear damper that supports the rear-side bottom surface of the tub at the rear side of the front damper; and a sway bar having a front end connected to the front connector and a rear end connected to the rear connector, and characterized in that both ends of the sway bar are connected to a base plate forming the bottom surface of a cabinet.

[0013] A vibration reduction device according to the present invention further includes a front supporter extending from the upper surface of the front side of the base plate and into which one end of the sway bar is inserted, and a rear supporter extending from the upper surface of the rear side of the base plate and into which the other end of the sway bar is inserted.

[0014] The front connector includes a cylindrical connector body inserted into the outer surface of the front damper, a connector arm extending in a first direction from the outer surface of the connector body, and a hook formed at an end of the connector arm, wherein the front end of the sway bar is hooked to the hook.

[0015] The above-mentioned hook projection is characterized in that it extends in a C shape from the end of the connector arm to form a guide groove and a hook groove on the inside.

[0016] The inlet of the guide groove is formed between the end of the connector arm and the end of the hook, the guide groove is bent in an L shape, and the end of the guide groove forms the inlet of the hook.

[0017] A pair of stopper projections is formed at the entrance edge of the above-mentioned hook, and the pair of stopper projections are characterized in that they protrude from opposite sides of each other.

[0018] The inner diameter of the above-mentioned hook is characterized in that it is formed to a size corresponding to the outer diameter of the above-mentioned sway bar.

[0019] The above connector arm is characterized in that it extends downward at a predetermined angle from a plane perpendicular to the central axis of the connector body.

[0020] The rear connector includes a cylindrical connector body fitted to the outer surface of the rear damper, a connector shoulder extending in a second direction from the outer surface of the connector body, and a hook extending in a bending manner from the connector shoulder, wherein the first direction and the second direction are opposite directions but approach each other.

[0021] The above-mentioned hook is characterized in that it is bent upward in an L shape at the end of the connector shoulder, so that a guide groove is formed between the end of the connector shoulder and the hook, and a hook groove communicating with the guide groove is formed in the connector shoulder.

[0022] A pair of stopper projections is formed at the entrance edge of the living groove communicating with the above guide groove, and the pair of stopper projections are characterized in that they protrude at a position facing each other.

[0023] The sway bar comprises an upper extension portion extending to a predetermined length, a front engaging portion formed at a front end of the upper extension portion and engaging a engaging groove of the front connector, a rear engaging portion formed at a rear end of the upper extension portion and engaging a engaging groove of the rear connector, a first intermediate extension portion bent at an end of the front engaging portion and extending parallel to the upper extension portion but extending toward the center of the upper extension portion, a second intermediate extension portion bent at an end of the rear engaging portion and extending parallel to the upper extension portion but extending in a direction opposite to the extending direction of the first extension portion, a first vertical portion bent at an end of the first intermediate extension portion and extending downward, a second vertical portion bent at an end of the second intermediate extension portion and extending downward, a first lower extension portion bent at an end of the first vertical portion and extending parallel to the first intermediate extension portion but extending in a direction opposite to the extending direction of the first intermediate extension portion, and the second vertical portion It includes a second lower extension portion that is bent at the end and extends parallel to the second intermediate extension portion, but extends in a direction opposite to the extension direction of the first lower extension portion.

[0024] The first lower extension is characterized in that it is inserted into the front supporter, and the second lower extension is characterized in that it is inserted into the rear supporter.

[0025] It is characterized in that it includes a first bushing made of a plastic material fitted to the outer surface of each of the first lower extension and the second lower extension, and a second bushing made of a rubber material fitted to the outer surface of the first bushing, and a through hole into which the second bushing is inserted is formed in each of the front supporter and the rear supporter.

[0026] The above first lower extension is characterized in that it extends longer than the second lower extension.

[0027] The above first intermediate extension is characterized in that it extends longer than the second intermediate extension.

[0028] The front hook portion includes an upward bend portion that is bent upwardly at the front end of the upper extension portion, a horizontal bend portion that is bent forwardly at the end of the upward bend portion, and a downward bend portion that is bent downwardly at the end of the horizontal bend portion, and the horizontal bend portion is fitted into the hook groove of the front connector.

[0029] The above horizontal bending portion is characterized in that it extends to a length corresponding to the width of the hook of the front connector.

[0030] The rear hook portion includes an upward bend portion that is bent upwardly at the rear end of the upper extension portion, a horizontal bend portion that is bent backwardly at the rear end of the upward bend portion, and a downward bend portion that is bent downwardly at the end of the horizontal bend portion, and the horizontal bend portion is fitted into the hook groove of the rear connector.

[0031] The above horizontal bending portion is characterized in that it extends to a length corresponding to the width of the connector shoulder of the rear connector.

[0032] A garment treatment device according to an embodiment of the present invention comprises: a base plate; a tub horizontally positioned at a position spaced upward from the base plate; a front damper connecting a front-side bottom surface of the tub and the base plate; a rear damper connecting a rear-side bottom surface of the tub and the base plate; a front supporter extending from a front upper surface of the base plate; a rear supporter extending from a rear upper surface of the base plate; and a vibration reduction device, wherein one part of the vibration reduction device is connected to the front damper, the other part of the vibration reduction device is connected to the rear damper, and both ends of the vibration reduction device are connected to the front supporter and the rear supporter.

[0033] According to a vibration reduction device according to an embodiment of the present invention, the vibration reduction device connects a damper connected to the front lower portion of a tub and a damper connected to the rear lower portion, so that in a low-speed section where vibration of the driving unit occurs significantly, the damping force of the damper is applied to the maximum to minimize vibration of the driving unit, and in a high-speed section where vibration decreases, the damping force is minimized to minimize vibration generated in the driving unit from being transmitted to the cabinet.

[0034] In detail, when the tub vibrates up and down, the vibration reduction device slides while connected to the damper, thereby primarily blocking vibration transmitted to the bottom of the cabinet, and secondarily blocking vibration transmitted minutely in the bushing that constitutes the vibration reduction device.

[0035] In addition, by connecting the existing front and rear dampers without installing a ball balancer and additional dampers and restricting relative displacement, there is an effect of reducing vibration of the driving unit.

[0036] In addition, it has the advantage of being easy to increase the capacity of the tub because it can effectively reduce excessive vibration at low speeds.

[0037] FIG. 1 is a perspective view of a washing machine equipped with a vibration reduction device according to an embodiment of the present invention.

[0038] Figure 2 is an enlarged perspective view of the vibration reduction device.

[0039] Figure 3 is an enlarged view of a front view of a washing machine equipped with a vibration reduction device.

[0040] Figure 4 is an enlarged view showing a front portion of the vibration reduction device.

[0041] Figure 5 is an enlarged view showing a rear portion of the vibration reduction device.

[0042] Fig. 6 is a side view of a sway bar constituting a vibration reduction device according to an embodiment of the present invention.

[0043] Figure 7 is an enlarged view showing a front connector constituting a vibration reduction device according to an embodiment of the present invention mounted on a front damper.

[0044] Figure 8 is a front view of the front connector.

[0045] FIG. 9 is an enlarged view showing a rear connector constituting a vibration reduction device according to an embodiment of the present invention mounted on a rear damper.

[0046] Figure 10 is a front view of the rear connector.

[0047] Hereinafter, a vibration reduction device according to an embodiment of the present invention and a washing machine equipped with the same will be described in detail with reference to the drawings.

[0048] FIG. 1 is a perspective view of a washing machine equipped with a vibration reduction device according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view of the vibration reduction device, FIG. 3 is an enlarged view of a front view of a washing machine equipped with a vibration reduction device, FIG. 4 is an enlarged view showing a front portion of the vibration reduction device, and FIG. 5 is an enlarged view showing a rear portion of the vibration reduction device.

[0049] Referring to FIGS. 1 to 5, a clothing treatment device (10) according to an embodiment of the present invention includes a base plate (11), a tub (12) placed horizontally on the upper side of the base plate (11), and a plurality of dampers that connect the tub (12) and the base plate (11) to absorb vibrations generated in the tub (12).

[0050] The above base plate (11) can be understood as a configuration that defines the bottom of the cabinet forming the exterior of the garment handling device (10).

[0051] The above tub (12) may be placed horizontally or in a form where the front end is slightly higher than the rear end. A drum into which laundry is fed is accommodated inside the tub (12).

[0052] The above-described plurality of dampers may include a pair of front dampers (13) connected to the lower side of the front end of the tub (12), and a pair of rear dampers (14) connected to the lower side of the rear end of the tub (12). One end of the front damper (13) is connected to the outer surface of the tub (12) near the front end, and the other end is connected to the base plate (11), and is arranged at a predetermined angle incline from the vertical line. One end of the rear damper (14) is connected to the outer surface of the tub (12) near the rear end, and the other end is connected to the base plate (11), and is arranged at a predetermined angle incline from the vertical line.

[0053] And, as shown in Fig. 3, the inclination angles of the front damper (13) and the rear damper (14) can be set differently. For example, the angle formed by the vertical line and the front damper (13) can be set to be larger than the angle formed by the vertical line and the rear damper (14).

[0054] Meanwhile, the vibration reduction device (20) includes a sway bar (21) formed by being bent multiple times, a front connector (22) fitted to the front damper (13), a rear connector (23) fitted to a rear damper (14) located at the rear side of the front damper (13), a front supporter (24) extending from the front upper surface of the base plate (11) and supporting one end of the sway bar (21), and a rear supporter (25) extending from the rear upper surface of the base plate (11) and supporting the other end of the sway bar (21).

[0055] In detail, a portion corresponding to the front end of the sway bar (21) is connected to the front connector (22), and a portion corresponding to the rear end is connected to the rear connector (23). By this structure, the sway bar (21) can substantially connect the front damper (13) and the rear damper (14), thereby canceling out the vibration transmitted to the front damper (13) and the vibration transmitted to the rear damper (14).

[0056] The front supporter (24) and the rear supporter (25) can be injection-molded as one body with the base plate (11), and thus the front supporter (24) and the rear supporter (25) can be defined as being included in the base plate (11). However, it is not excluded that the front supporter (24) and the rear supporter (25) are provided as separate members and are coupled to the upper surface of the base plate (11) by a fastening member.

[0057] Insertion holes are formed in the front supporter (24) and rear supporter (25) to fit the respective ends of the sway bar (21). The diameter of the insertion hole is formed to be larger than the diameter of the sway bar (21), a bushing member is inserted into the insertion hole, and the sway bar (21) penetrates the bushing member.

[0058] The above bushing member may include an inner bushing (26) fitted to the outer surface of the sway bar (21), and an outer bushing (27) into which the inner bushing (26) is fitted. The inner bushing (26) may be molded from a plastic material, and the outer bushing (27) may be molded from a rubber material.

[0059] The two ends of the sway bar (21) perform linear motion corresponding to the front-back direction of the tub (12) and rotational motion around an axis passing through the center of the insertion hole while being connected to the front supporter (24) and the rear supporter (25), respectively. In addition, the vibration reduction device (20) attenuates vibration transmitted to the front damper (13) and the rear damper (14) through the linear motion and the rotational motion, and minimizes the amount of vibration transmitted to the base plate (11). Furthermore, the vibration reduction device (20) prevents the tub (12) from swinging left and right and hitting the side wall of the cabinet through the linear motion and the rotational motion.

[0060] In addition, when one of the front and rear ends of the tub (12) vibrates more in the left-right direction than the other side, the vibration of the tub (12) is attenuated by the torsional or bending force of the sway bar (21).

[0061] Since both ends of the sway bar (21) are connected to the base plate (11), the vibration transmitted from the tub (12) along the dampers (13, 14) is not transmitted to the base plate (11) but is attenuated. As a result, the phenomenon of the garment handling device (10) moving on the installation surface due to vibration can be prevented.

[0062] Fig. 6 is a side view of a sway bar constituting a vibration reduction device according to an embodiment of the present invention.

[0063] Referring to FIG. 6, the sway bar (21) constituting the vibration reduction device (20) according to the embodiment of the present invention can be formed from a stainless steel material and is formed by being bent multiple times.

[0064] In detail, the sway bar (21) includes an upper extension (211) extending horizontally toward the front damper (13) and the rear damper (14), a front catch (212) formed by bending multiple times at the front end of the upper extension (211), a rear catch (213) formed by bending multiple times at the rear end of the upper extension (211), a first intermediate extension (214) extending parallel to the upper extension (211) from the end of the front catch (212) but extending a predetermined length toward the rear end of the sway bar (21), a second intermediate extension (215) extending parallel to the upper extension (211) from the end of the rear catch (213) but extending a predetermined length toward the front end of the sway bar (21), and the first intermediate extension (215) It includes a first vertical portion (216) that is vertically bent and extended from an end of an extension portion (214), a second vertical portion (217) that is vertically bent and extended from an end of the second intermediate extension portion (215), a first lower extension portion (218) that is bent from an end of the first vertical portion (216) and extends parallel to the first intermediate extension portion (214) but extends toward the front end of the upper extension portion (211), and a second lower extension portion (219) that is bent from an end of the second vertical portion (217) and extends parallel to the second intermediate extension portion (215) but extends toward the rear end of the upper extension portion (211).

[0065] In more detail, the front hook portion (212) includes an upwardly bent portion (2121) that is bent upwardly from the front end of the upper extension portion (211), a horizontally bent portion (2122) that is bent forwardly from the end of the upwardly bent portion (2121), and a downwardly bent portion (2123) that is bent downwardly from the end of the horizontally bent portion (2122). In addition, the first intermediate extension portion (214) is bent and extended backwardly from the end of the downwardly bent portion (2123).

[0066] In addition, the rear hanging portion (213) includes an upwardly bent portion (2131) that is bent upwardly from the rear end of the upper extension portion (211), a horizontally bent portion (2132) that is bent backwardly from the end of the upwardly bent portion (2131), and a downwardly bent portion (2133) that is bent downwardly from the end of the horizontally bent portion (2132). In addition, the second intermediate extension portion (215) is bent and extended forwardly from the end of the downwardly bent portion (2133).

[0067] The first lower extension (218) is fitted into the front connector (24), and the second lower extension (219) is fitted into the rear connector (25).

[0068] The first intermediate extension (214) may be extended longer than the second intermediate extension (215), and the first lower extension (218) may be extended longer than the second lower extension (219).

[0069] The first vertical portion (216) and the second vertical portion (217) are spaced apart from each other by a predetermined distance in the front-back direction, and the distance can be designed to be 0.5 to 0.7 times the length of the upper extension portion (211).

[0070] The first lower extension portion (218) may extend forward from the end of the first vertical portion (216), but may extend to a point spaced a predetermined distance rearward from the vertical plane passing through the front end of the front hanging portion (212), i.e., the downward bending portion (2123).

[0071] The second lower extension (219) may extend rearward from the end of the second vertical portion (216), but may extend to a point spaced a predetermined distance forward from the rear end of the rear hanging portion (212), i.e., the vertical plane passing through the downward bending portion (2133).

[0072] The upper extension (211), the intermediate extension (214, 215), and the lower extension (218, 219) may be parallel to each other, but the gap between the intermediate extension (214, 215) and the lower extension (218, 219) may be designed to be larger than the gap between the upper extension (211) and the intermediate extension (214, 215). If the gap between the upper extension (211) and the intermediate extension (214, 215), that is, the length of the downwardly bent portion (2123) of the front engaging portion (212) becomes excessively long, the first intermediate extension (214) and the front damper (13) may interfere with each other during the vibration of the tub (12), thereby generating noise. To prevent this problem, for example, the length of the downwardly bent portion (2123, 2133) may be designed to be within 25 mm.

[0073] FIG. 7 is an enlarged view showing a front connector constituting a vibration reduction device according to an embodiment of the present invention mounted on a front damper, and FIG. 8 is a front view of the front connector.

[0074] Referring to FIGS. 7 and 8, a front connector (22) constituting a vibration reduction device (20) according to an embodiment of the present invention may include a cylindrical connector body (221), a connector arm (222) extending from an outer circumferential surface of the connector body (221), and a hook (223) formed at an end of the connector arm (222).

[0075] In detail, the front connector (22) can be molded from a plastic injection molding.

[0076] The connector body (221) is inserted into the outer circumferential surface of the front damper (13), and the inner diameter of the connector body (221) is designed to have a size corresponding to the outer diameter of the front damper (13), so that the inner circumferential surface of the connector body (221) can slide while in contact with the outer circumferential surface of the front damper (13). That is, when vibration is transmitted to the front damper (13), the connector body (221) moves linearly along the central axis (S) of the front damper (13) or rotates around the central axis (S) to dampen the vibration transmitted to the front damper (13).

[0077] The connector arm (222) extends radially from the outer surface of the connector body (221), and extends downwardly at a predetermined angle from a plane perpendicular to the central axis of the connector body (221). Since the front damper (13) is connected to the tub (12) and the base plate (11) at a predetermined angle from a vertical line, the inclination angle of the connector arm (222) can be defined as an angle at which the connector arm (222) becomes horizontal when the connector body (221) is fitted to the outer surface of the front damper (13), as shown in FIG. 3.

[0078] The above-mentioned hook (223) is extended in a C shape from the lower end of the end of the connector arm (222). As a result, a guide groove (2231) and a hook groove (2232) are formed between the end of the connector arm (222) and the end of the hook (223).

[0079] In detail, the entrance of the guide groove (2231) is formed between the upper end of the end of the connector arm (222) and the end of the hook ring (223), the guide groove (2231) is bent in an L shape, and the hook groove (2232) is formed at the end of the guide groove (2231).

[0080] In addition, a pair of stopper protrusions (2233) protrude at the boundary between the guide groove (2231) and the engaging groove (2232), specifically, at the entrance edge of the engaging groove (2232). The stopper protrusions (2233) protrude at positions facing each other, and the gap between the pair of stopper protrusions (2233) is formed to be smaller than the diameter of the engaging groove (2232).

[0081] The horizontal bending portion (2122) forming the front engaging portion (212) of the sway bar (21) is inserted through the entrance of the guide groove (2231), and the horizontal bending portion (2122) moves in an L-shaped path along the shape of the guide groove (2231) and is then inserted into the engaging groove (2232). When the horizontal bending portion (2122) is inserted into the engaging groove (2232), the engaging ring (223) slightly opens while interfering with the pair of stopper protrusions (2233).

[0082] And, when the horizontal bending portion (2122) is completely inserted into the engaging groove (2232) by an external force, the engaging ring (223) returns to its original position. And, when the horizontal bending portion (2122) passes over the pair of stopper projections (2233) and is completely inserted into the engaging groove (2232), the horizontal bending portion (2122) is prevented from easily coming off from the engaging groove (2232) by the stopper projections (2233).

[0083] When vibration is transmitted to the front damper (13) while the horizontal bending portion (2122) is inserted into the engaging groove (2232), the sway bar (21) can rotate around the axis (P) passing through the horizontal bending portion (2122).

[0084] In addition, the horizontal bending portion (2122) is extended to a length corresponding to the width of the hook (223), so that the upward bending portion (2122) contacts one side of the hook (223), and the downward bending portion (2123) contacts the other side of the hook (223). Therefore, even if the front connector (22) swings, the sway bar (21) does not move in the direction of the axis (P) of the horizontal bending portion (2122). As a result, even if vibration is transmitted to the front damper (13), the sway bar (21) does not swing in the front-back direction.

[0085] FIG. 9 is an enlarged view showing a rear connector constituting a vibration reduction device according to an embodiment of the present invention mounted on a rear damper, and FIG. 10 is a front view of the rear connector.

[0086] Referring to FIGS. 9 and 10, a rear connector (23) constituting a vibration reduction device (20) according to an embodiment of the present invention includes a cylindrical connector body (231) inserted into the outer surface of the rear damper (14), a connector shoulder (232) extending from the outer surface of the connector body (231), and a hook (233) bent and extended from the connector shoulder (232).

[0087] In detail, the connector body (231) has an inner diameter corresponding to the outer diameter of the rear damper (14) and can move along the central axis (Q) of the rear damper (14) or rotate around the central axis (Q).

[0088] The above connector shoulder (232) can be understood as having a structure similar to the connector arm (222) of the front connector (22).

[0089] The above-mentioned hook (233) extends from the end of the connector shoulder (232) and extends from a point close to the bottom. In addition, the hook (233) is bent upward in an L shape to form an L-shaped guide groove (2321) between the hook (233) and the connector shoulder (232). Specifically, an entrance of the guide groove (2321) is formed between the end of the hook (233) and the end of the connector shoulder (232), and a hook groove (2322) into which a horizontal bend (2132) constituting a rear hooking portion (213) of the sway bar (21) is fitted is formed in the connector shoulder (232).

[0090] The exit of the above guide groove (2321) and the above catch groove (2322) are connected to each other, and a pair of stopper projections (2323) protrude at the boundary where these two grooves meet, that is, at the edge of the entrance of the catch groove (2322). The pair of stopper projections (2323) protrude at positions facing each other so that after the horizontal bending portion (2132) is fitted into the catch groove (2322), it does not come off from the catch groove (2322) due to vibration.

[0091] In addition, the length of the horizontal bending portion (2132) is extended to a length corresponding to the width of the connector shoulder (232), so that the sway bar (21) does not swing along the axis (P) passing through the horizontal bending portion (2132) while the rear hooking portion (213) is hooked to the rear connector (23). This is the same as the relationship between the length of the horizontal bending portion (2122) of the front hooking portion (212) and the width of the hooking ring (223).

[0092] Here, the connector arm (222) of the front connector (22) extends toward the outside of the garment handling device (10), while the connector shoulder (232) of the rear connector (232) protrudes toward the center of the garment handling device (10). That is, the connector arm (222) and the connector shoulder (232) extend in opposite directions.

[0093] By these structural features, as shown in Fig. 3, the central axis of the engaging groove (2232) of the front connector (22) and the central axis of the engaging groove (2322) of the rear connector (23) form a coaxial axis (P).

[0094] And, when the vibration occurring in the tub (12) moves the front end of the tub (12) to one of the left and right sides and moves the rear end of the tub (12) to the other of the left and right sides, the front end and the rear end of the sway bar (21) also move in the same manner, thereby generating a torsional moment in the sway bar (21). At this time, the sway bar (21) withstands the torsional moment and attenuates the left-right oscillation of the tub (12).

[0095] In addition, since the first lower extension (218) and the second lower extension (219) of the sway bar (21) are connected to the front supporter (24) and the rear supporter (25), the lower end of the sway bar (21) is maintained fixed to the base plate (11), so that even if the tub (12) vibrates while rotating around a vertical axis, the phenomenon of the tub (12) hitting the side wall of the cabinet can be effectively prevented. That is, the vibration reduction device (20) functions as a suspension that absorbs vibration transmitted to the front damper (13) and the rear damper (14) by having the sway bar (21) hold the front damper (13) and the rear damper (14).

Claims

1. A front connector inserted into the outer surface of the front damper that supports the front side bottom surface of the tub placed horizontally; A rear connector inserted into the outer surface of the rear damper that supports the rear bottom surface of the tub at the rear side of the front damper; A sway bar is included, the front end being connected to the front connector and the rear end being connected to the rear connector, A vibration reduction device characterized in that both ends of the above sway bar are connected to a base plate forming the bottom of the cabinet.

2. In paragraph 1, A front supporter extending from the front upper surface of the base plate and into which one end of the sway bar is inserted; A vibration reduction device further comprising a rear supporter extending from the upper surface of the rear side of the base plate and into which the other end of the sway bar is inserted.

3. In paragraph 2, The above front connector, A cylindrical connector body inserted into the outer surface of the above front damper, A connector arm extending in a first direction from the outer surface of the above connector body, Including a hook formed at the end of the connector arm, A vibration reduction device characterized in that the front end of the above sway bar is caught on the above hook.

4. In paragraph 3, The above-mentioned stumbling block is, A vibration reduction device characterized in that the end of the connector arm is bent in a C shape and extended to form a guide groove and a catch groove on the inside.

5. In paragraph 4, An entrance to the guide groove is formed between the end of the connector arm and the end of the hook, The above guide home is bent in an L shape, A vibration reduction device characterized in that the end of the above guide groove forms the entrance of the above catch groove.

6. In paragraph 5, A pair of stopper projections are formed at the entrance edge of the above-mentioned hanging groove, The above pair of stopper projections, A vibration reduction device characterized by protruding from opposite sides.

7. In paragraph 4, A vibration reduction device characterized in that the inner diameter of the above-mentioned hook groove is formed to a size corresponding to the outer diameter of the above-mentioned sway bar.

8. In paragraph 3, The above connector arm is, A vibration reduction device characterized in that it extends downward at a predetermined angle from a plane perpendicular to the central axis of the connector body.

9. In paragraph 3, The above rear connector, A cylindrical connector body fitted to the outer surface of the rear damper, A connector shoulder extending in a second direction from the outer surface of the connector body, Includes a hook extending from the connector shoulder, The above first direction and the above second direction, A vibration reduction device characterized by having opposite but approaching directions.

10. In paragraph 9, The above hanging ring is, The end of the connector shoulder is bent upward in an L shape, so that a guide groove is formed between the end of the connector shoulder and the hook. A vibration reduction device characterized in that a catch groove communicating with the guide groove is formed in the above connector shoulder.

11. In paragraph 10, A pair of stopper projections are formed at the entrance edge of the living groove communicating with the above guide groove, A vibration reduction device characterized in that the pair of stopper projections protrude from opposite positions.

12. In paragraph 10, The above sway bar, An upper extension extending to a predetermined length, A front hook formed at the front end of the upper extension and hooked to the hook groove of the front connector, A rear hook formed at the rear end of the upper extension and hooked to the hook groove of the rear connector, A first intermediate extension portion that is bent from the end of the front hanging portion and extends parallel to the upper extension portion, but extends toward the center of the upper extension portion; A second intermediate extension portion that is bent at the end of the rear hanging portion and extends parallel to the upper extension portion, but extends in a direction opposite to the extension direction of the first extension portion; A first vertical portion that is bent and extends downward from the end of the first intermediate extension portion; A second vertical portion that is bent and extends downward from the end of the second intermediate extension portion; A first lower extension portion that is bent at the end of the first vertical portion and extends parallel to the first intermediate extension portion, but extends in a direction opposite to the extension direction of the first intermediate extension portion, and A vibration reduction device including a second lower extension portion that is bent at an end of the second vertical portion and extends parallel to the second intermediate extension portion, but extends in a direction opposite to the extension direction of the first lower extension portion.

13. In paragraph 12, The above first lower extension is inserted into the front supporter, A vibration reduction device characterized in that the second lower extension is inserted into the rear supporter.

14. In paragraph 13, A first bushing made of plastic material fitted to the outer surface of each of the first lower extension and the second lower extension, Including a second bushing made of rubber material fitted on the outer surface of the first bushing, A vibration reduction device characterized in that each of the front supporter and the rear supporter has a through hole formed into which the second bushing is inserted.

15. In paragraph 13, A vibration reduction device characterized in that the first lower extension is longer than the second lower extension.

16. In paragraph 12, A vibration reduction device characterized in that the first intermediate extension portion extends longer than the second intermediate extension portion.

17. In paragraph 12, The above front hanging part is, An upward bending portion that is bent upward at the shear end of the upper extension, A horizontal bend portion that is bent forward at the end of the above upward bend portion, Including a downward bending portion that is bent downward at the end of the above horizontal bending portion, A vibration reduction device characterized in that the horizontal bending part is fitted into the engaging groove of the front connector.

18. In paragraph 17, A vibration reduction device characterized in that the horizontal bending portion extends to a length corresponding to the width of the catching ring of the front connector.

19. In paragraph 12, The above rear hanging part is, An upward bending portion that is bent upward at the rear end of the upper extension, A horizontal bending portion that is bent backwards from the rear of the above upward bending portion, Including a downward bending portion that is bent downward at the end of the above horizontal bending portion, A vibration reduction device characterized in that the horizontal bending part is fitted into the engaging groove of the rear connector.

20. In paragraph 19, A vibration reduction device characterized in that the horizontal bending portion extends to a length corresponding to the width of the connector shoulder of the rear connector.

21. Base plate; A tub placed horizontally at a position spaced upward from the base plate and having an open front end; A front damper provided to support the lower portion of the tub and connecting the lower portion closer to the front end of the tub and the base plate; A rear damper provided to support the lower portion of the tub and connecting the lower portion closer to the rear end of the tub and the base plate; A front supporter extending from the front upper surface of the above base plate; A rear supporter extending from the rear upper surface of the base plate; and Including a vibration reduction device as described in any one of claims 1 to 20, A part of the above vibration reduction device is connected to the front damper, The other part of the above vibration reduction device is connected to the rear damper, A garment processing device characterized in that both ends of the vibration reduction device are connected to the front supporter and the rear supporter.

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