TWI662168B - Washing machine - Google Patents

Abstract

In order to provide a washing machine having a highly reliable anti-vibration device capable of suppressing unexpected vibrations. The washing machine is provided with an inner groove with a rotating blade at the bottom, an outer groove surrounding the inner groove, and an outer frame accommodating the outer groove, and the outer groove is suspended and supported by the outer frame by a vibration-proof device; The anti-vibration device includes a suspension rod, a sliding member, a lubricant, and a sliding body. One end of the suspension rod is supported by the outer frame and the other end supports a compression spring through a spring seat. The sliding member is connected to the suspension rod. Sliding, the lubricant is interposed between the suspension rod and the sliding member, the sliding body is penetrated by the suspension rod and is located above the sliding member, and the sliding system includes a gap provided between the suspension body and the suspension rod And a support portion that supports the boom.

Description

washing machine

[0001] The present invention relates to a washing machine, and more particularly to a vibration-proof device for suppressing vibration of an outer tank.

[0002] A general washing machine includes an anti-vibration device provided with an inner tank with rotating blades at the bottom, an outer tank surrounding the inner tank, an outer frame housing the outer tank, and an outer tank suspended by the outer frame. A washing shaft having a rotating blade and a motor driving the washing shaft are installed. In the washing machine configured as described above, when the laundry in the inner tub is biased after the washing and washing steps, the inner tub is rotated at a high speed for the centrifugal dehydration step. During the process of increasing the rotation speed, the outer tub Resonance will cause vibration in the outer tank, which will cause significant vibration and noise in the washing machine. Then, the vibration of the outer groove is reduced by the anti-vibration device, and the vibration generated in the outer groove is suppressed from being transmitted to the outer frame. As such a vibration isolator, for example, it is disclosed in Japanese Patent Application Laid-Open No. 2016-154705 (Patent Document 1). [0003] Patent Document 1 describes that "the washing machine of the present invention includes an inner groove provided with a rotating blade at the bottom, an outer groove surrounding the inner groove, and an outer frame housing the outer groove, and is protected against vibration. The device allows the outer groove to be suspended and supported by the outer frame. The anti-vibration device includes a boom, a sliding member, and a lubricant. One end of the boom is supported by the outer frame and the other end supports a compression spring through a spring seat. The sliding member slides with the suspension rod, the lubricant is interposed between the suspension rod and the sliding member, and at least the upper surface or the lower surface of the through hole of the sliding member is polygonal. [0004] [Patent Document 1 ] JP 2016-154705

[Problems to be Solved by the Invention] 000 [0005] In Patent Document 1, the sliding body 15 and the cylindrical body 16 also vibrate in the axial direction (up and down direction) of the boom 14, and between the slider 15 and the boom 14 It may also allow lubricant to enter. As described above, although the relative reciprocating movement of the sliding body 15 and the boom 14 generates a vibration damping force, in this case, an unexpected vibration damping force is generated, and there is a possibility that abnormal vibration may occur. [0006] Accordingly, an object of the present invention is to provide a washing machine having a highly reliable anti-vibration device capable of suppressing unexpected vibrations. [Technical Means for Solving the Problem] [0007] In order to achieve the above object, the washing machine of the present invention includes, as an example, an inner groove provided with a rotating blade at the bottom, an outer groove surrounding the inner groove, and the outer groove. The outer frame is suspended and supported by the outer frame by means of an anti-vibration device; the anti-vibration device is provided with a suspension rod, a sliding member, a lubricant, and a sliding body, and one end of the suspension rod is suspended by the outer frame. The compression spring is supported and supported by a spring seat at the other end. The sliding member slides with the suspension rod, the lubricant is interposed between the suspension rod and the sliding member, and the sliding body is penetrated and located by the suspension rod. Above the sliding member, the sliding system includes a gap provided between the sliding member and the boom, and a support portion that supports the boom. [Effects of the Invention] [0008] According to the present invention, it is possible to provide a washing machine having a highly reliable anti-vibration device capable of suppressing unexpected vibrations.

[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to drawings as appropriate. [Embodiment 1] [0011] FIG. 1 is a schematic longitudinal sectional view illustrating a washing machine according to an embodiment of the present invention. In the figure, only the basic components of the washing machine are described, and other components, such as a panel switch, are omitted and not shown. The main components are: outer frame 1, outer groove 3 made of synthetic resin, inner groove 5 made of SUS (stainless steel), flange 6 made of aluminum, reduction mechanism 7, motor 8 and mounting plate 9; outer groove 3 is It is elastically supported by the outer frame 1 through the anti-vibration device 2. The inner tank 5 is installed in the outer tank 3 and has rotating blades 4 inside, and is equipped with a fluid balance for eliminating imbalance of laundry such as laundry. The device 10 and the flange 6 are used to fix the inner groove 5 to the dewatering shaft 12. The reduction mechanism 7 is driven by a gear when the washing shaft 11 supporting the flange 6 and constituting an inner and outer two-layer structure with the dewatering shaft 12 is driven. For speed reduction, the motor 8 is provided on the same axis as the speed reduction mechanism 7, and the mounting plate 9 supports the motor 8 and the speed reduction mechanism 7 and is held by the outer groove 3. In the above structure, during the washing and cleaning steps, the motor 8 only rotates the rotary blades 4 through the deceleration mechanism 7 through the washing shaft 11, and during the dehydration step, the inner tank 5 and the rotary blades 4 are made to pass through the dewatering shaft 12 at high speed. Spin to perform centrifugal dehydration. Here, since a plurality of water-passing holes 5a are provided on the outer peripheral portion of the inner tub 5, the water contained in the laundry is squeezed out with high-speed rotation. At this time, if the laundry in the inner tank 5 is biased, the inner tank 5 and the outer tank 3 will vibrate, and in particular, will vibrate greatly due to resonance at the start of the spin-drying rotation. In order to provide a damping force for suppressing this vibration and to prevent the vibration of the outer groove 3 from being transmitted to the outer frame 1, it is held by the vibration isolation device 2. [0012] FIG. 2 is a schematic longitudinal sectional view of a lower portion of the vibration isolation device 2. The anti-vibration device 2 includes: a sliding member 13, a suspension rod 14, a sliding body 15, a bottomed cylinder 16, a sliding member 17, and a lubricant (not shown). The outer frame 1 can swing and support the spherical surface freely. One end of the suspension rod 14 is held by the sliding member 13 and the other end is supported by a spring seat 19 through a vibration spring 18 for elastically supporting the outer groove 3, and slides. The body 15 is penetrated by the suspension rod 14 and abuts against the outer groove 3. The cylinder 16 is disposed on the lower side of the sliding body 15 and the upper portion abutting against the vibration-proof spring 18 is open, and the sliding member 17 is provided It slides in the cylinder 16 and on the outer peripheral surface of the boom 14, and the lubricant is interposed between the sliding member 17 and the boom 14. The sliding member 17 is made of an elastic body such as a deformable rubber. Generally, a semi-solid butter is used as a lubricant. [0013] When the outer groove 3 is vibrated and the portion of the outer groove 3 that abuts against the sliding body 15 is vibrated in the up-down direction, the sliding body 15 and the cylinder 16 are also vibrated in the axial direction (up-down direction) of the boom 14. In this way, the boom 14 supported by the outer frame 1 so as to be swingable but unable to move up and down will relatively reciprocate with the slider 15 and the cylinder 16. Therefore, the sliding member 17 disposed on the inner peripheral surface of the cylindrical body 16 also reciprocates relative to the boom 14. In this way, the inner contact surface of the sliding member 17 slides on the outer peripheral surface of the boom 14 to generate Coulomb friction, which exerts the effect of damping force and suppresses vibration. In addition, when the force pressing the sliding member 17 against the boom 14 is large, the vibration damping force generated also becomes large. In addition, since the outer groove 3 is elastically suspended and supported by the outer frame 1 by the anti-vibration spring 18 of the anti-vibration device 2, the vibration of the outer groove 3 is difficult to be transmitted to the outer frame 1. When the lubricant on the sliding surfaces of the boom 14 and the sliding member 17 is insufficient, in particular, the friction of the sliding member 17 progresses and it becomes impossible to maintain the initial damping force. Therefore, the vibration of the outer groove 3 increases and it cannot maintain stability for a long time Performance. [0014] Here, since the sliding body 15 and the cylinder 16 also vibrate in the axial direction (up and down direction) of the boom 14, lubricant may be allowed to enter between the slider 15 and the boom 14. In this way, the sliding body 15 and the boom 14 also generate a damping force by relatively reciprocating, but in this case, an unexpected damping force is generated, and it is easy to transmit the vibration of the outer groove 3 to the outer frame 1, and There are concerns about abnormal vibration. In addition, because the viscosity of the lubricant is also temperature-dependent, this unexpected change in viscosity can also be a cause of abnormal vibration. [0015] Thus, in this embodiment, as shown in FIG. 3, a gap 15a and a support portion 15b are provided in the opening of the upper portion of the sliding body 15. The gap 15a allows the lubricant that has penetrated between the sliding body 15 and the boom 14 to escape. On the other hand, if a gap is provided around the entire opening of the upper part of the sliding body 15, there is a possibility that a collision noise between the sliding body 15 and the boom 14 may occur. In addition, during the vibration of the washing machine, the sliding body 15 also needs to be provided with a portion that allows the boom 14 to abut and support the sliding body 15. Therefore, a support portion 15 b is provided. [0016] Although an example in which three gaps 15a and three support portions 15b are provided is shown, the present invention is not limited to this. However, considering the balance, it is preferable that the gap 15a and the support portion 15b have a plurality. [0017] FIG. 4 is a cross-sectional view along A-A in FIG. 3, and FIG. 5 is a perspective view in FIG. 4. The support portion 15 b is a portion including the upper end portion provided in the axial direction of the sliding body 15. In this way, since the space between the slider 15 and the boom 14 can be secured more, abnormal vibration can be suppressed. [0018] According to the present embodiment described above, since the gap 15a and the support portion 15b are provided in the opening above the sliding body 15, the gap 15a can be used to release the lubricant that has penetrated between the sliding body 15 and the boom 14, and it is possible to The support portion 15b is used to suppress the occurrence of a collision sound between the sliding body 15 and the boom 14. Thus, it is possible to provide a washing machine having a highly reliable vibration isolator. [0019] The present invention can also be applied to a so-called drum-type washing machine.

[0020]

1‧‧‧ frame

2‧‧‧Anti-vibration device

3‧‧‧ Outer Slot

4‧‧‧ rotating blade

5‧‧‧Inner slot

5a‧‧‧through hole

6‧‧‧ flange

7‧‧‧ Reduction mechanism

8‧‧‧ Motor

9‧‧‧ mounting plate

10‧‧‧ fluid balancer

11‧‧‧washing shaft

12‧‧‧ dehydration shaft

13‧‧‧ Slider

14‧‧‧ boom

15‧‧‧ sliding body

15a‧‧‧Gap

15b‧‧‧ support

16‧‧‧Cylinder

17‧‧‧ sliding member

17a‧‧‧through hole

18‧‧‧Anti-vibration spring

[0009] FIG. 1 is a schematic longitudinal sectional view of a washing machine according to an embodiment. FIG. 2 is a schematic longitudinal cross-sectional view of the vibration isolation device of the embodiment. FIG. 3 is a plan view of the sliding body 15 of the vibration isolator of the embodiment. FIG. 4 is a schematic cross-sectional view taken along the line A-A in FIG. 3 of the vibration isolator of the embodiment. Fig. 5 is a perspective view of Fig. 4 of the vibration isolator of the embodiment.

Claims (4)

A washing machine includes an inner groove provided with a rotating blade at the bottom, an outer groove surrounding the inner groove, and an outer frame for housing the outer groove, and the outer groove is suspended by the outer frame by a vibration-proof device. The support is characterized in that: The anti-vibration device includes a suspension rod, a sliding member, a lubricant, and a sliding body, one end of the suspension rod is supported by the outer frame, and the other end supports a compression spring through a spring seat, and the sliding member Sliding with the suspension rod, the lubricant is interposed between the suspension rod and the sliding member, the sliding body is penetrated by the suspension rod and located above the sliding member, and the sliding system is provided with: A gap between the booms, and a support portion that supports the boom. The washing machine according to claim 1, wherein the opening of the upper portion of the sliding body includes a gap provided between the upper portion of the sliding body and the suspension rod, and a support portion that supports the suspension rod. The washing machine according to claim 2, wherein the support portion is a portion including an upper end portion provided in the axial direction of the sliding body. The washing machine according to claim 2, wherein: a plurality of the gaps and a plurality of the support portions are provided in a circumferential direction of the opening.