TWI412645B - Vibration absorbing device for washing machine - Google Patents

Abstract

A vibration absorbing device (10) includes: a shaft member (7); a flange section (7a) provided at a predetermined position of the shaft member (7) so as to protrude therefrom; a front end section (7b) provided below the flange section (7a) of the shaft member (7); a rubber member (11) having a rubber cylinder section (11b) provided around the front end section (7b) in the radial direction, the rubber member (11) also having a rubber-side flange section (11a) provided at the upper end of the rubber cylinder section (11b); and a holding member (12) having a cylinder holding section (12a) which is provided around the rubber cylinder section (11b) in the radial direction and which restricts the movement of the rubber cylinder section (11b) in the radial direction, the holding member (12)also having an end surface (12c) for restricting the movement of the rubber-side flange section (11a) in the axial direction.

Description

Vibration absorbing device of washing machine

The present invention relates to a vibration absorbing apparatus for a washing machine that absorbs vibration generated in a washing machine.

In the past, in order to achieve a high water-saving effect, there is a washing machine having a water tank having a rotating shaft in a non-perpendicular direction (for example, a horizontal direction or an oblique direction) and a water tank (outer tank) for holding the water tank. The washing machine as described above is disclosed, for example, in Patent Documents 1 to 3 below.

Fig. 7 is a view showing a schematic configuration of a washing machine having a rotating shaft of a water tank in the horizontal direction, as described in Patent Document 1. Referring to Fig. 7, the washing machine 101 of Patent Document 1 includes a casing 102, an outer tank 105, and a water tank 106; the outer tank 105 is disposed downward from a patio portion of the casing 102 by having a predetermined elastic thrust. Suspension springs 104 are retained; and the sink 106 is held by the outer slots 105. At the lower portion of the outer tank 105, there is provided a damper 107 extending in the vertical direction for connecting the outer tank 105 with the bottom portion 108 of the washing machine body. Patent Document 2 discloses a washing machine having a rotating shaft of a water tank in an oblique direction (that is, a so-called "drum type washing machine"), and discloses a damper similar to that of Patent Document 1. Further, Patent Document 3 also discloses a washing machine having a rotating shaft in an oblique direction, and discloses the same damper.

(previous technical literature) (Patent Literature)

Patent Document 1: Japanese Laid-Open Patent Publication No. Hei 5-131075.

Patent Document 2: Japanese Laid-Open Patent Publication No. 2009-297122.

Patent Document 3: Japanese Laid-Open Patent Publication No. 2009-297387.

Conventional washing machines employ a damper as described above. That is, it has a damper arranged in the vertical direction for connecting the water tank holding the sink and the bottom of the washing machine body, thereby absorbing the vibration of the washing machine by the vibration of the water tank generated by the rotation of the water tank.

However, since the rotating shaft of the water tank is not in the vertical direction, the centrifugal force due to the rotation of the water tank generated in the direction orthogonal to the direction of the rotating shaft and the force generated by the gravity generated by the weight of the water tank and the water tank are combined. Vibration occurs in the spatial direction (three-dimensional direction). Further, particularly when the water tank starts to rotate, since the position of the laundry contained in the water tank is displaced to an irregular position, it may be caused by the force applied to the irregularity generated by the water tank itself (eccentric load). And vibrate in the spatial direction.

With the force generated in the spatial direction as described above, the force of the vertical component is absorbed by arranging the dampers disclosed in Patent Documents 1 to 3 in the vertical direction, so that the vibration due to the force of the vertical component can be absorbed. However, in the dampers of Patent Documents 1 to 3, since the force of the horizontal component is not absorbed, the vibration due to the force of the horizontal component cannot be reduced.

Further, since the damper as described above is very expensive, it is not desirable to use the aforementioned damper in a commercially available washing machine.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vibration absorbing apparatus for a washing machine capable of absorbing vibration generated in a spatial direction at a low cost in view of the above problems.

The vibration absorbing apparatus in the washing machine of the present invention includes an outer tank that holds a rotating water tank inside, and an outer casing that houses the outer tank. The vibration absorbing apparatus of the washing machine includes: a shaft member; a rubber member disposed around a diameter direction of the shaft member; and a first wall member disposed around a diameter direction of the rubber member to restrict a diameter of the rubber member The action of the direction; and the second wall member are provided in the axial direction of the rubber member to restrict the movement of the rubber member in the axial direction.

Preferably, the rubber member includes a first cylindrical portion having a cylindrical shape having a first outer diameter, and a second cylindrical portion extending continuously from the first cylindrical portion and having a larger diameter than the first cylinder The cylindrical shape of the second outer diameter of the portion; the first wall member restricts the operation of the first cylindrical portion in the radial direction, and the second wall member restricts the operation of the second cylindrical portion in the axial direction.

Further preferably, the shaft member has a crotch portion which is provided to protrude in the radial direction of the shaft member and is in contact with the second cylindrical portion.

It is further preferred that the rubber member has a concavo-convex shape on the surface.

Since the rubber member is provided around the diameter direction of the shaft member, and the first wall member provided around the diameter direction of the rubber member restricts the operation of the rubber member in the radial direction, the rubber member that is restricted in operation is used. Elastically deformed to absorb vibration in the diameter direction of the shaft member. Further, since the second wall member provided in the axial direction of the rubber member restricts the operation of the rubber member in the axial direction, the vibration in the axial direction is absorbed by the elastic deformation of the rubber member that is restricted. That is, the vibration of the component contained in the axial direction and the radial direction of the shaft member can be absorbed by the rubber member without using a high-priced damper as in the prior art, and the vibration can be attenuated.

Therefore, the vibration absorbing apparatus of the washing machine which can absorb the vibration generated in the spatial direction can be provided at a low cost.

Embodiments of the present invention will be described below with reference to the drawings. Fig. 1(A) is a schematic view showing a main part of the washing machine 1 of the embodiment as seen from the front. In addition, Fig. 1(B) shows a main part of the washing machine 1, and is a schematic view showing a side surface viewed from the right side. That is, Fig. 1(A) is an arrow diagram shown by IA-IA in Fig. 1(B), and Fig. 1(B) is shown in IB-IB of Fig. 1(A). Arrow chart.

Referring to Fig. 1 (A) and Fig. 1 (B), the washing machine 1 is a so-called "inclined drum washing machine" as disclosed in the above-mentioned Patent Documents 2 and 3, and is not shown from the front side of the washing machine 1. The window portion is provided to receive the laundry, and functions such as washing, washing, dehydration, and the like are performed in response to a user's request from an operation unit or the like not shown.

The washing machine 1 includes a casing 2, a suspension spring 4, an outer tank 5, a water tank 6, and a vibration absorbing device 10; the suspension spring 4 is disposed downward from a patio portion of the casing 2, and has a predetermined spring thrust. Referring to Fig. 1(B), the outer groove 5 is suspended by the suspension spring 4, and is slightly cylindrically inclined from the rear toward the front side; the water tank 6 is held inside the outer groove 5, and has The outer groove 5 has a substantially cylindrical shape and has a rotation axis P that is inclined upward from the rear toward the front, and is provided along the inner wall surface of the outer groove 5 by a rotary motor 15 provided behind the outer groove 5. The vibration absorbing device 10 includes a shaft member 7 fixed to the outer wall surface of the outer tank 5 and extending in a direction substantially orthogonal to the outer wall surface, and the shaft member 7 is penetrated and fixed to the outer casing. The fixing member 20 on the inner wall surface of the second portion is fixed to the socket portion 8 fixed by a known means such as screwing. The vibration absorbing device 10 is symmetrically disposed at a position on the left side below the outer tub 5 as shown in Fig. 1(A). Further, the washing machine 1 is placed on the floor (ground) by the leg member 9 provided at the lower portion of the outer casing 2. In addition, in the first figure (B), the fixing member 20 shown in Fig. 1(A) is omitted.

The water tank 5 and the water tank 6 are formed into a substantially cylindrical shape having a front (upper) side opening, and are capable of accommodating the laundry inside the water tank 6 from the window portion (not shown). The water tank 6 is in a state in which the water supplied from the water supply unit (not shown) is housed together with the laundry, and is rotated by the rotation motor 15 to perform washing, washing, and dehydration. Further, at this time, the groove 5 outside the water tank 6 is held, and vibrates in the spatial direction in accordance with the rotation of the water tank 6.

When the water tank 6 is not rotated, the hanging spring 4 applies the elastic force of the hanging outer groove 5 to the hanging outer groove 5, the water tank 6, and the like, and the support of the vibration absorbing device 10. The position such as the force equalization is used as a reference position (hereinafter referred to as "reference position") to support the outer tank 5 and the like.

Next, a specific configuration of the vibration absorption device 10 will be described. Fig. 2 is a schematic perspective view showing the vibration absorbing device 10 shown in Figs. 1(A) and 1(B), and Fig. 3 is a cross-sectional view taken along line III-III of Fig. 2; In addition, Fig. 2 and Fig. 3 show a state in which the water tank is not rotated (a state in which the outer layer or the like is located at the reference position).

Referring to FIGS. 2 and 3, the vibration device 10 includes a shaft member 7 and a socket portion 8.

The shaft member 7 is fixed to the outer wall surface of the groove located above the second and third figures. Therefore, the shaft member 7 vibrates in accordance with the vibration of the groove other than the rotation of the water tank. Further, the shaft member 7 has a predetermined disc shape which is protruded around the shaft member 7 (diameter direction) as shown in Fig. 3 at a predetermined position on the outer casing side located below the second and third figures. The crotch 7a. The crotch portion 7a has a substantially flat surface in the outer casing side. In addition, in the following, the shaft member 7 on the outer casing side is referred to as the front end portion 7b from the crotch portion 7a in the shaft member 7.

The socket portion 8 includes a rubber member 11 and a holding member 12, and has a hole through which the front end portion 7b of the shaft member 7 is passed as described above. The rubber member 11 is formed in a substantially cylindrical shape and is provided around the diameter direction of the front end portion 7b. Specifically, as shown in Fig. 3, the rubber member 11 includes a rubber cylindrical portion 11b and a rubber side flange portion 11a having a cylindrical shape and the rubber The side flange portion 11a has a cylindrical shape having an outer diameter larger than that of the rubber cylindrical portion 11b. The rubber cylindrical portion 11b has a hollow portion through which the distal end portion 7b is inserted, and the inner wall surface is in contact with the outer peripheral surface of the distal end portion 7b. Further, the rubber side flange portion 11a has a surface having substantially the same shape as the crotch portion 7a, and is in contact with the surface of the crotch portion 7a. In addition, in the embodiment, the rubber cylindrical portion 11b functions as the first cylindrical portion, and the rubber-side flange portion 11a functions as the second cylindrical portion.

The holding member 12 is formed in a substantially cylindrical shape extending in the axial direction of the shaft member 7. Specifically, the holding member 12 includes a cylindrical holding portion 12a and a holding-side flange portion 12b that is formed around the diameter direction of the rubber cylindrical portion 11b and formed into a cylindrical shape. The holding-side flange portion 12b is provided at the lower end portion of the cylindrical holding portion 12a, and is bent outward to the outside of the diameter. The cylinder holding portion 12a has an end surface 12c of the upper end portion and a side wall portion 12d of the inner side surface of the cylindrical shape, and the side wall portion 12d is provided with the rubber cylindrical portion 11b and the front end portion 7b in the inner side in the radial direction. The opposite week is opposite. On the other hand, the end surface 12c faces the crotch portion 7a via the rubber side flange portion 11a. Further, as shown in Fig. 2, the holding-side flange portion 12b has three through holes 121a to 121c penetrating in the axial direction, and is fixed to the above-described fixing member by screws or the like inserted into the through holes 121a to 121c.

The portions in contact with each other in the rubber member 11 and the holding member 12 are in surface contact and integrated. In other words, in this embodiment, the contact portion of the rubber-side flange portion 11a and the end surface 12c is bonded, and the contact portion of the rubber cylindrical portion 11b and the side wall portion 12d is bonded. Therefore, as shown in FIG. 1, since the holding member 12 is fixed to the outer casing 2 of the washing machine 1 by the fixing member 20, the operation of the rubber member 11 integrated with the holding member 12 is restricted. That is, the side wall portion 12d restricts the operation of the rubber cylindrical portion 11b in the radial direction, and the end surface 12c restricts the operation of the rubber side flange portion 11a in the radial direction. Further, the bonding and bonding method of the contact portions of the rubber member 11 and the holding member 12 is preferably carried out by insert molding and vulcanization bonding. In addition, in addition, it can also be bonded by an adhesive. Further, in this embodiment, the side wall side 12d functions as the first wall member, and the end surface 12c functions as the second wall member.

Next, the operation of the vibration absorption device 10 will be described. First, a case where the shaft member 7 vibrates in the axial direction in response to the vibration of the outer tub 5 will be described with reference to Fig. 3 . Since the rubber member 11 and the holding member 12 are integrated, the movement of the rubber member 11 is restricted by the holding member 12 fixed to the outer casing. Therefore, the vibration in the axial direction of the shaft member 7 having the distal end portion 7b is absorbed by the elastic deformation (compression deformation) of the rubber member 11 that is restricted in operation.

Specifically, the crotch portion 7a and the end surface 12c face each other with the rubber side flange portion 11a interposed therebetween. Therefore, the elastic deformation of the rubber-side flange portion 11a of the rubber member 11 that is restricted by the holding member 12 can absorb the vibration of the shaft member 7 in the axial direction.

That is, the vibration absorbing device 10 can absorb the vibration of the shaft member 7 as described above in the axial direction.

Next, a description will be given of a case where the shaft member 7 vibrates in the radial direction in response to the vibration of the outer tub 5. Also in this case, since the rubber member 11 is restricted by the holding member 12, the elastic deformation (compression deformation) of the rubber cylindrical portion 11b that is restricted in operation can absorb the shaft member 7 having the front end portion 7b in the radial direction. vibration.

Specifically, the front end portion 7b and the side wall portion 12d are opposed to each other via the rubber cylindrical portion 11b. Therefore, the elastic deformation of the rubber cylindrical portion 11b of the rubber member 11 that is restricted by the holding member 12 can absorb the vibration of the shaft member 7 in the radial direction.

That is, the vibration absorbing device 10 can absorb the vibration of the shaft member 7 as described above in the radial direction.

Next, the case where the shaft member 7 vibrates in the direction including both the axial direction and the radial direction in response to the vibration of the outer groove will be described. In this case, the vibration in the axial direction is considered to be the same as the vibration in the axial direction. Therefore, the elastic deformation (compression deformation) of the rubber member 11 absorbs the vibration of the shaft member 7 having the distal end portion 7b in the axial direction. . Further, the vibration in the radial direction is also considered to be the same as that described above, so that the elastic deformation (compression deformation) of the rubber member 11 can absorb the vibration of the shaft member 7 having the distal end portion 7b in the radial direction.

Therefore, since the vibration absorbing device 10 can absorb the vibration including the axial direction and the radial direction of the shaft member 7 in the spatial direction (three-dimensional direction), the vibration is attenuated.

As described above, since the high-priced damper as in the prior art can absorb the vibration in the axial direction and the radial direction of the shaft member by the rubber member, the vibration generated in the spatial direction can be absorbed at a low cost.

Next, a modification of the rubber member 11 shown in Fig. 3 will be described. In order to actually use the rubber member 11, the rigidity of the rubber member 11 is adjusted, that is, since the vibration absorbability must be adjusted to be suitable for the washing machine to be used, the slits and/or ribs of the rubber member are provided.

Fig. 4 is a cross-sectional view showing a part of the foregoing, which is a plan view of a rubber member (Fig. 4(A)), and a portion shown by an arrow IVB-IVB in Fig. 4(A) (Fig. 4 (Fig. 4 ( B)). Here, the drawings of the shaft member and the holding member are omitted. Referring to Fig. 4 (A) and (B), in the modified example, the rubber member 21 also includes a rubber cylindrical portion 21b having a through hole 21c and a rubber side flange portion 21a, which is a rubber cylindrical portion 21b. The rubber-side flange portion 21a has a cylindrical shape larger than the outer diameter of the rubber cylindrical portion 21b, and is disposed at an upper portion of the rubber-side flange portion 21a at 90 degrees from each other. Four rectangular projections 22a to 22d extending in the diameter direction, respectively. The number of protrusions can be increased or decreased as needed.

Fig. 5 is a view showing another modification of the rubber member, which is a plan view of the rubber member (Fig. 5(A)), and a sectional view of a portion indicated by an arrow VB-VB in Fig. 5(A). (Fig. 5 (B)). Here, the drawings of the shaft member and the holding member are also omitted. Referring to the fifth (A) and (B), in the modified example, the rubber member 41 also includes a rubber cylindrical portion 41b having a through hole 41c and a rubber side flange portion 41a having the rubber cylindrical portion 41b. In the case of a cylindrical shape, the rubber side flange portion 41a has a cylindrical shape larger than the outer diameter of the rubber cylindrical portion 41b, and a spline groove is provided in the through hole 41c in the axial direction.

Further, in combination with Fig. 4 and Fig. 5, four projecting portions 22a to 22d each having a rectangular shape as shown in Fig. 4 may be provided on the upper portion of the rubber side flange portion 41a shown in Fig. 5. In addition, the number of the protrusions can also be changed.

Further, in the above-described embodiment, the rubber member has a portion that is in contact with at least the surface of the shaft member and the holding member. However, the present invention is not limited thereto, and a concave-convex shape may be provided on the surface of the rubber member. Sexual contact. For example, as shown in Fig. 6, a concave shape 33 is provided on the lower surface 31b of the rubber side flange portion 31 of the rubber member 30 and the inner wall surface 32a of the rubber cylindrical portion 32, and the rubber side flange portion 31 of the rubber member 30 is provided. The upper surface 31a and the outer wall surface 32b of the rubber cylindrical portion 32 are provided with a convex shape 34. With this configuration, the rubber member 11 of the above-described embodiment has a concave shape provided on each surface of the rubber member 30 when the vibration amplitude of the shaft member 7 is small (for example, an initial stage of vibration or the like). 33 and convex shape 34 to absorb vibrations having a small amplitude. That is, a rubber member having an absorbing ability in response to appropriate vibration of vibration can be provided. Further, the uneven shape on the surface of the rubber member is not limited to that shown in Fig. 6. For example, a convex shape 33 may be provided on the lower surface 31b of the rubber side flange portion 31 of the rubber member 30 and the inner wall surface 32a of the rubber cylindrical portion 32, and the upper surface 31a of the rubber side flange portion 31 of the rubber member 30 and the rubber may be provided. The outer wall surface 32b of the cylindrical portion 32 is provided with a concave shape 34. Further, the concave shape and the convex shape may be mixed and provided on the same surface of the rubber member. Further, it is also possible to provide only one of a concave shape or a convex shape.

Further, in the above-described embodiment, the case where the two vibration absorbing devices are provided at the symmetry position of the washing machine has been described. However, the present invention is not limited thereto, and one or three or more vibration devices may be provided. For example, in a plurality of positions, the vertical line passing through the center of the water tank (the line segment T indicated by the two-dot chain line in Fig. 1(A)) is used as the position of the symmetry axis (i.e., the line symmetry with the vertical line). ), to configure a plurality of vibration absorbing devices. With this arrangement, the vibration can be absorbed symmetrically for the left and right.

In the above-described embodiment, the case where the shaft member 7 is provided on the outer groove side and the vibration absorbing device is provided on the outer casing side has been described. However, the present invention is not limited thereto, and the vibration absorbing device may be provided on the outer groove side instead. A shaft member is provided on the outer casing side.

Further, in the above-described embodiment, the vibration absorbing device in the case where the shaft member is fixed to the outer groove has been described. However, the present invention is not limited thereto, and the seat portion of the vibration absorbing device may be provided on the outer groove side, and the two members of the shaft member may be provided. The socket is provided on the end side. For example, the fixing member is fixed to the outer wall of the outer tub, and the retaining-side flange portion of the socket portion is fixed to the fixing member with a screw, so that the socket portion provided on the outer casing side and the socket portion provided on the outer groove side become a pair. Next, the shaft member is inserted into the through holes of the two seat portions on the outer casing side and the outer groove side. According to this configuration, since the vibration is absorbed by the two socket portions provided on the both end sides of the shaft member, the ability to absorb the vibration is improved, and the load applied to one of the socket portions can be increased. Dispersed, so the life of the vibration absorbing device can be improved.

Further, in the above-described embodiment, the case where the socket portion is fixed to the fixing member fixed to the outer casing has been described. However, the present invention is not limited thereto, and may be fixed to a member that does not vibrate and maintains the position in a stationary state. . For example, the seat portion can be fixed at a member fixed to the bottom of the washing machine.

Further, in the above-described embodiment, the vibration absorbing device may be integrally formed by bonding the coupling between the shaft member and the elastic member by an adhesive or the like. According to this configuration, the vibration of the shaft member in the direction separating from the socket portion is also exerted by the tensile force of the bonding and the vibration is more attenuated.

Further, in the above-described embodiment, the case where the side wall portion and the end surface of the holding member absorb the vibration in the axial direction and the radial direction of the shaft member has been described. However, the present invention is not limited thereto. The shaft member and the plurality of holding members restrict the movement of the rubber member in the axial direction and the radial direction; the shaft member has no crotch portion, and the plurality of holding members are disposed in the diameter direction of the rubber member. A holding member for restricting the operation of the diameter direction of the rubber member, and a holding member for restricting the movement of the rubber member in the axial direction in the axial direction of the rubber member. For example, in the above-described embodiment, the flange portion 7a is not provided for the shaft member. The rubber side flange portion 11a (that is, only the rubber cylindrical portion) is not provided for the rubber member. Further, in the holding member, a holding member for restricting the movement of the rubber cylindrical portion 11b in the axial direction is provided below the rubber cylindrical portion 11b (axial direction). According to this configuration, the vibration of the shaft member in the axial direction and the radial direction can be absorbed in the same manner as in the above embodiment.

Further, the shaft member and the seat portion included in the vibration absorbing device are basically different members. Therefore, the shaft member and the socket portion are separately produced, and when the washing machine is manufactured, the shaft member and the socket portion are combined to constitute the vibration absorbing device. That is, the socket portion may be separately provided in the washing machine, and then the shaft member and the socket portion may be combined to constitute a vibration absorbing device.

Further, in the above-described embodiment, the vibration absorbing apparatus is applied to a so-called inclined drum washing machine. However, the present invention is not limited thereto, and may be applied to a washing machine having a rotating shaft in the vertical direction, and Any washing machine such as a washing machine having a rotating shaft in the lateral direction. Further, the vibration absorbing means is not limited to the washing machine, and can be applied to other devices that generate vibration.

Further, the rubber member of the above embodiment may be another polymer elastomer.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the embodiments of the drawings. Modifications and variations of the embodiments are possible within the scope of the invention and the scope of the invention.

1. . . washing machine

2. . . shell

4. . . Suspension spring

5. . . Outer slot

6. . . sink

7. . . Shaft member

7a. . . Crotch

7b. . . Front end

8. . . Seat department

9. . . Foot member

10. . . Vibration absorbing device

11, 21, 30, 41. . . Rubber component

11a, 21a, 31. . . Rubber side flange

11b, 21b, 32. . . Rubber cylinder

12. . . Holding member

12a. . . Cylinder holding part

12b. . . Holding side flange

12c. . . End face

12d. . . Side wall

15. . . Rotary motor

20. . . Fixed member

22a to 22d, 41a to 41e. . . Protruding

31a. . . Above

31b. . . below

32a. . . Inner wall

32a. . . Outer wall

33. . . Concave shape

34. . . Convex shape

101. . . washing machine

102. . . shell

104. . . Suspension spring

105. . . Outer slot

106. . . sink

107. . . Damper

108. . . Bottom bottom

121a to 121c. . . Through hole

Fig. 1(A) is a schematic view showing a main portion of the washing machine of the embodiment as viewed from the front; Fig. 1(B) is a schematic view showing a main portion of the washing machine and showing a side view from the right side. .

Fig. 2 is a schematic perspective view of the vibration absorbing device.

Fig. 3 is a cross-sectional view taken along line III-III of Fig. 2.

Fig. 4 (A) and (B) are views showing a modification of the rubber member shown in the vibration absorbing device.

Fig. 5 (A) and (B) are views showing another modification of the rubber member shown in the vibration absorbing device.

Fig. 6 is a cross-sectional view showing another example of the rubber member of the vibration absorbing device.

Fig. 7 is a view showing a conventional vibration absorbing apparatus.

7. . . Shaft member

7a. . . Crotch

7b. . . Front end

8. . . Seat department

10. . . Vibration absorbing device

11. . . Rubber component

11a. . . Rubber side flange

11b. . . Rubber cylinder

12. . . Holding member

12a. . . Cylinder holding part

12b. . . Holding side flange

12c. . . End face

12d. . . Side wall

Claims (3)

A vibration absorbing device for a washing machine is a vibration absorbing device in a washing machine including an outer tank that holds a water tank that rotates inside and a casing that houses the outer tank, and the vibration absorbing device includes a shaft member that is fixed The outer groove; and the rubber member are provided around the diameter direction of the shaft member; the shaft member has a crotch portion, the crotch portion is protrudingly provided in a diameter direction of the shaft member; and the crotch portion is provided on the rubber One side of the member in the axial direction; the vibration absorbing device includes a first wall member provided around the diameter direction of the rubber member, and cooperating with the shaft member to restrict the diameter direction of the rubber member And the second wall member is provided on the other surface side of the rubber member in the axial direction, and cooperates with the crotch portion to restrict the movement of the rubber member in the axial direction. The vibration absorbing apparatus of the washing machine according to the first aspect of the invention, wherein the rubber member includes a first cylindrical portion, a cylindrical shape having a first outer diameter, and a second cylindrical portion. a cylindrical shape that is continuous with the first cylindrical portion and has a second outer diameter larger than the first cylindrical portion; and the first wall member restricts a diameter direction of the first cylindrical portion The operation of the second wall member restricts the operation of the second cylindrical portion in the axial direction. The vibration absorbing apparatus of the washing machine according to the first or second aspect of the invention, wherein the rubber member has a concavo-convex shape on the surface.