CN112342743A - Washing machine and vibration damper thereof - Google Patents

Abstract

The invention discloses a vibration damper of a washing machine and the washing machine, wherein the vibration damper comprises a suspender and an upper support assembly sleeved outside the suspender, the upper support assembly comprises a supporting seat, an upper support, a damping structure and a buffer structure, the damping structure is arranged between the upper support and the supporting seat and is used for converting the extrusion of the upper support and the supporting seat into variable damping force to the suspender at least partially, and the buffer structure is supported between the upper support and the supporting seat and is used for buffering the extrusion force born by the damping structure. The buffer structure buffers the pressure applied to the damping structure by the supporting seat and the upper support according to the size of the load and the eccentric size in the washing machine, the damping structure changes the damping force of the damping structure to the suspension rod according to the pressure, and the damping change is stable.

Description

Washing machine and vibration damper thereof

Technical Field

The invention relates to the field of washing equipment, in particular to a vibration damper of a washing machine and the washing machine.

Background

With the development of the technology, the existing washing machines are classified into pulsator washing machines and drum washing machines, wherein the pulsator washing machines structurally comprise: a casing forming the appearance of the washing machine; an outer tub suspended and fixed by a support member and containing washing water is provided inside the housing; an inner barrel rotatably installed inside the outer barrel and provided with a stirrer at the bottom thereof; a driving motor installed at the lower side of the outer tub and used for generating driving force of the stirrer and the inner tub; a power transmission device for selectively providing a driving force of the driving motor to the pulsator and the inner tub; and a drain device installed at a lower portion of the outer tub and used for draining the washing water contained in the outer tub to the outside, the outer tub being hung on the casing by a vibration damping device.

Chinese patent application No. 201511028796.2 discloses a washing machine damping vibration damping device and washing machine, and this damping vibration damping device that becomes includes jib, pop-up, sleeve pipe and establishes the pressure buffer gear in the sleeve pipe, and the sleeve pipe upper end has a bracket, and the jib runs through and goes up to hold in the palm, bracket, extends to and is connected with pressure buffer gear in the sleeve pipe, pop-up and pressure buffer gear between be equipped with at least one cover damping cover on the jib, the damping cover provides the changeable damping force of jib. However, the damping sleeve is directly compressed by the upper support and the pressure buffer mechanism, so that the damage to the damping sleeve is large, and the damping sleeve cannot effectively play a role in vibration reduction and noise reduction for a long time.

The present invention has been made in view of this situation.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a vibration damping device with stable damping change and long service life and a washing machine.

In order to solve the technical problems, the invention adopts the technical scheme that: a vibration damper of a washing machine comprises a hanger rod and a supporting assembly sleeved outside the hanger rod, wherein the supporting assembly comprises a supporting seat, a damping structure and a buffering structure, the damping structure is arranged between the supporting seat and is used for converting the extrusion force of the supporting seat and the supporting seat into a variable damping force to the hanger rod at least in part, so that the shaking and swinging of an outer barrel are effectively reduced, and good vibration damping and noise reduction effects are achieved; the buffer structure is supported between the upper support and the support seat and used for buffering the extrusion force borne by the damping structure. The direct damage of the extrusion of the supporting seat and the upper support to the damping structure is slowed down, and the service life of the damping structure is prolonged.

Furthermore, one end, opposite to the upper support, of the supporting seat comprises a cavity with an opening facing the upper support, at least part of the upper support is movably arranged in the cavity, the damping structure is arranged between the cavity and the upper support, the damping structure is changed according to extrusion forces of the upper support and the cavity to generate variable damping force on the suspension rod, and the buffering structure is supported between the upper support and the cavity. The direct damage of the extrusion of the concave cavity and the upper support to the damping structure is relieved, and the service life of the damping structure is prolonged.

Furthermore, still be equipped with in the cavity of supporting seat with the cavity is separated into the partition portion of first cavity and second cavity, damping structure sets up in the first cavity, buffer structure sets up in the second cavity. The damping structure and the buffering structure are arranged in different cavities and are not in direct contact with each other, so that damage to each other caused by friction force and pressure in other directions during direct contact is prevented.

Preferably, the first chamber is coaxially disposed within the second chamber. The damping structure and the buffering structure are basically pressed from the same direction, namely mainly from the axial direction, the stress directions are the same, and the buffering effect of the buffering structure can be more direct and effective.

Preferably, the partition portion is integrated into one piece annular baffle in the supporting seat, and the shaping is simple and convenient, saves the cost, buffer structure cover is established the partition portion outside avoids buffer spring to take place the distortion when the pressurized and presss from both sides the friction disc, also prevents that buffer spring from warping too big unable recovery original shape when the pressurized.

Furthermore, a limiting part is further arranged in the first cavity, one end of the damping structure in the axial direction abuts against the limiting part to prevent the damping structure from being separated from the first cavity from the direction, and the other end of the damping structure protrudes out of the partition part and abuts against the upper support to provide a compression deformation space for the damping structure.

Further, the damping structure include with jib interference fit's damping ring, buffer structure establishes including the cover damping ring outside buffer spring.

Preferably, the damping ring is molded from a material having elasticity.

Furthermore, the upper support is provided with a protruding part extending into the concave cavity of the supporting seat, and the end face of the protruding part extending into the concave cavity is abutted against the damping ring to apply pressure to the damping ring. The inner ring of the end face of the protruding portion extending into the concave cavity abuts against the damping ring, and the outer ring abuts against the partition portion after being pressed to the supporting seat through the upper support, so that pressure is applied to the supporting seat. The upper support is coaxial with the supporting seat and the hanging rod.

Preferably, one end of the buffer spring in the axial direction is sleeved outside the protruding part, and the other end of the buffer spring is sleeved outside the separating part; prevent the bulge in the in-process that stretches into the cavity of supporting seat with buffer spring takes place the dislocation, leads to buffer spring can't realize the effect of slow-down force.

Preferably, the outer side wall of the protruding portion is provided with a guide rib for guiding the buffer spring. The guide rib also reinforces the strength of the projection.

Furthermore, the top of supporting seat includes the fixed part, on the pop-up be equipped with the cooperation portion that the fixed part leaned on each other, the fixed part with be equipped with the liner between the cooperation portion, slow down the action of fixed part and cooperation portion, the damping and avoid producing noise, abnormal sound.

Preferably, the fixed part is protruded from the periphery of the supporting seat, and the matching part is protruded from the periphery of the upper support, so that the mutual abutting area of the fixed part and the matching part is increased.

Furthermore, the damping device further comprises a damping spring and a base, one end of the suspender penetrates through the upper support assembly and the damping spring and is connected with the base, and the damping spring is abutted between the base and the upper support assembly. The upper supporting component is connected with an outer barrel of the washing machine or connected with a box body of the washing machine, and the other end of the suspender is connected with the box body of the washing machine or the outer barrel of the washing machine.

Preferably, the damping spring abuts against between the fixing portion of the supporting seat and the base.

Preferably, the outer edge of the fixing part is provided with a limiting part for preventing the damping spring from being separated, and the limiting part is a protrusion extending from the edge of the fixing part to the direction of the base.

Furthermore, the vibration damper also comprises a waterproof cap sleeved outside the suspender, and the upper support is arranged between the waterproof cap and the supporting seat; prevent water from entering the supporting seat from the upper support, and reduce the damping effect of the damping structure.

Preferably, the waterproof cap comprises a sealing sleeve sleeved on the suspender and a water blocking part extending from the sealing sleeve to the periphery, and the surface of the water blocking part opposite to the upper support is a water guiding surface inclined from the center to the periphery.

The invention also provides a washing machine, which comprises the vibration damper.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.

1. The damping structure receives the extrusion of pop-up and supporting seat, changes according to the different extrusion force that receives the damping structure is right the damping force that the jib produced effectively reduces rocking and the swing of outer bucket, plays fine damping, noise reduction effect.

2. The buffer structure buffers the pressure applied to the damping structure by the supporting seat and the upper support according to the size of the load and the eccentric size in the washing machine, the damping structure changes the damping force of the damping structure to the suspension rod according to the pressure, and the damping change is stable.

3. Set up buffer structure, cushion damping structure pressurized, slowed down the extrusion of supporting seat and pop-up support and to damping structure's direct injury, prolonged damping structure's life.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is an exploded view of the installation of the vibration damping device of the present invention;

FIG. 2 is a cross-sectional view of the vibration damping device of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a first schematic view of a support base according to the present invention;

FIG. 5 is a second schematic view of the support base of the present invention;

FIG. 6 is a schematic pop-up view of the present invention;

FIG. 7 is a first schematic view of an embodiment of a waterproof cap of the present invention;

FIG. 8 is a schematic view of a second embodiment of the waterproof cap of the present invention;

FIG. 9 is a schematic view of another embodiment of a waterproof cap of the present invention;

in the figure: 1. the support comprises a support component 11, a support 111, a convex part 112, a matching part 113, a connecting part 12, a support seat 121, a separating part 122, a first cavity 123, a second cavity 124, a fixing part 125, a limiting part 126 and a guide rib; 13. damping structure, 14, buffer structure, 15, pad; 2. a boom; 3. a base 31, a reinforcing rib; 4. a damping spring; 5. a vibration damping pad; 6. a waterproof cap 61, a sealing sleeve 62 and a water retaining part; 7. a lifting rod seat.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following further describes embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1-5, the present invention discloses a vibration damper of a washing machine, which includes a suspension rod 2 and an upper support assembly 1 sleeved outside the suspension rod 2, wherein the upper support assembly 1 includes a support base 12, an upper support 11, a damping structure 13 and a buffer structure 14, the damping structure 13 is disposed between the support base 12 and the upper support 11, and is configured to convert at least part of an extrusion force of the upper support 11 and the support base 12 into a variable damping force for the suspension rod 2, and the buffer structure 14 is supported between the upper support 11 and the support base 12 and is configured to buffer the extrusion force borne by the damping structure 13. The jib 2 passes supporting seat 12, pop-up 11 and damping structure 13 in proper order, damping structure 13 presss from both sides and establishes pop-up 11 with between the supporting seat 12, receive pop-up 11 with the extrusion of supporting seat 12 compresses or releases according to the different extrusion force that receives damping structure 13, damping structure 13 takes place deformation, and damping structure 13 supplies the size in the hole that jib 2 passed changes, and is right damping force that jib 2 produced is along with damping structure 13's deformation and grow or diminish, effectively reduces rocking and the swing of outer bucket, plays fine damping, noise reduction effect. Lubricating grease is coated between the suspension rod 2 and the upper supporting assembly 1 to reduce noise and eliminate noise. The buffer structure buffers the compression size of the damping structure 13, buffers the pressure applied to the damping structure 13 by the support seat 12 and the upper support 11 according to the size of the load in the washing machine and the size of eccentricity, buffers the damping force of the damping structure 13 to the suspension rod 2 according to the received pressure, and has stable damping change. Set up buffer structure 14, cushion damping structure 13 pressurized, slowed down supporting seat 12 and the extrusion of pop-up 11 and to damping structure 13 direct injury, prolonged damping structure's life.

Example one

In this embodiment, damping structure 13 axial clamp is established supporting seat 12 with between the pop-up 11, at least partial circumference clamp is established the supporting seat with between the jib, damping structure 13 receives axial direction's extrusion force and takes place deformation, receives the circumference extrusion of supporting seat again and strengthens its damping force to the jib, buffer structure 14 supports and leans on pop-up 11 with between the supporting seat 12, exert the pressure of giving damping structure 13 to supporting seat 12 and pop-up 11 and play buffering and cushioning effect, still play the supporting role to supporting seat 12 and pop-up 11 between.

In a preferred embodiment, one end of the support seat 12 opposite to the upper support 11 includes a cavity with an opening facing the upper support 11, at least a part of the upper support 11 is movably disposed in the cavity, the damping structure 13 is disposed between the cavity and the upper support 11, and the damping structure 13 is changed according to the extrusion force of the upper support 11 and the cavity to generate a variable damping force on the hanger rod 2, so as to effectively reduce the shaking and swinging of the outer tub and achieve good vibration and noise reduction effects; the buffer structure 14 is supported between the upper support 11 and the cavity, and buffers the pressure applied to the damping structure 13 by the cavity and the upper support 11, and the damping structure 13 buffers the damping force of the damping structure on the suspension rod 2 according to the received pressure.

In a further embodiment, the damping structure 13 includes a damping ring in interference fit with the suspension rod 2, lubricating grease is applied between the damping ring and the suspension rod 2 to reduce noise and eliminate noise, the damping ring generates a damping force on the suspension rod 2 when the suspension rod 2 moves to slow down the movement of the suspension rod, the damping force generated on the suspension rod 2 is changed according to the extrusion force of the upper support 11 and the cavity, the shaking and swinging of the outer barrel is effectively reduced, and good vibration reduction and noise reduction effects are achieved; the damping ring is in interference fit with the suspender 2, so as to ensure that the damping ring has a damping effect on the suspender 2 all the time; the buffer structure 14 comprises a buffer spring sleeved outside the damping ring, so that the pressure applied to the damping ring can be buffered conveniently, and the damping force of the damping ring on the suspender 2 can be buffered; the damping ring is sleeved on the outer side of the damping ring, the damping ring is prevented from expanding outwards, and the damping force on the suspender 2 is reduced. Preferably, the damping ring is formed by an elastic material, when the damping ring is extruded, the damping ring is compressed, the damping force on the suspender 2 is increased, when the extrusion force disappears or is reduced, the damping ring is recovered under the action of the self elasticity, and the damping force on the suspender 2 is reduced; in this embodiment, the spring coefficient of the buffer spring is large, when the washing machine washes, the pressure is large, the upper support 11 and the support base 12 extrude the buffer spring and the damping ring, and the buffer spring buffers the extrusion force to change the damping force of the damping ring; when the washing machine is used for dewatering, the buffer spring buffers the pressure applied to the damping ring by the support seat 12 and the upper support 11 according to the size of the load and the size of eccentricity, and buffers the damping force of the damping ring. The buffer spring also plays a role in buffering the magnitude of the pressure and a supporting role.

Example two

In this embodiment, a partition 121 that partitions the cavity into a first cavity 122 and a second cavity 123 is further disposed in the cavity of the support seat 12, the damping structure 13 is disposed in the first cavity 122, and the buffering structure 14 is disposed in the second cavity 123; the damping structure 13 and the buffer structure 14 are disposed in different chambers and are not in direct contact with each other, so as to prevent damage to each other caused by friction and pressure in other directions when in direct contact. Preferably, the first chamber 122 is coaxially disposed inside the second chamber 123, so that the damping structure 13 and the buffering structure 14 are pressed from substantially the same direction, that is, mainly from the axial direction, and the force direction is the same, and the buffering effect of the buffering structure 14 can be more directly effective.

In this embodiment, the partition part 121 is an annular partition plate integrally formed in the support seat 12, so that the forming is simple and convenient, and the cost is saved; the buffer spring is sleeved outside the partition part 121, so that the buffer spring is prevented from being twisted to clamp a friction plate when being pressed, and the buffer spring is prevented from being too twisted to restore the original shape when being pressed. Specifically, an inwardly protruding first platform is arranged on the inner side wall of the cavity of the support seat 12, and the annular partition plate extends from the periphery of the first platform in the direction of the upward support 11 along the axial direction of the support seat 12. The periphery of supporting seat 12 includes the variable diameter portion, and the peripheral diameter of keeping away from the one end of supporting seat 12 of pop-up 11 is less than the one end that is close to pop-up 11, and the peripheral rounding off of reducing department between the two, the great position setting of the diameter of the relative variable diameter portion of first platform is in supporting seat 12 inside wall.

Preferably, a limit portion 125 is further disposed in the first chamber 122, and one end of the damping structure 13 in the axial direction abuts against the limit portion 125 to prevent the damping structure 13 from separating from the first chamber 122 in the axial direction; the other end protrudes from the partition part 121 to abut against the upper support 11, the distance that the other end protrudes from the partition part 121 is the maximum distance that the damping structure 13 can be reduced by the extrusion force of the support seat 12 and the upper support 11, the damping structure 13 and the buffer structure 14 are separated in two chambers by the partition part 121, an obstacle is also set for the movement of the upper support 11, when the upper support 11 extends into the partition part 121 under the stress, the damping structure is extruded to achieve the maximum damping force, and the upper support 11 and the support seat 12 abut against each other to apply pressure to each other. Specifically, an inwardly protruding second platform is arranged on the inner side wall of the concave cavity of the supporting seat 12, and the second platform protrudes inwardly along the outer circumference of the annular partition plate. The periphery of supporting seat 12 includes the variable diameter portion, and the peripheral diameter of the one end of supporting seat 12 of keeping away from pop-up 11 is less than the one end that is close to pop-up 11, and the peripheral rounding off of reducing department between the two, the less position of the diameter of the relative variable diameter portion of second platform sets up in supporting seat 12 inside wall.

EXAMPLE III

In this embodiment, the upper support 11 is provided with a protruding portion 111 extending into the concave cavity of the support seat 12, and an end surface of the protruding portion 111 extending into the concave cavity abuts against the damping ring to apply pressure to the damping ring; the inner ring of the end face of the protrusion 111 extending into the cavity abuts against the damping ring, and the outer ring abuts against the partition 121 after the upper support 11 presses the support seat 12, so as to press the support seat 12. The upper support 11, the supporting seat 12 and the suspension rod 2 are coaxially arranged.

Preferably, one end of the buffer spring in the axial direction is sleeved outside the protrusion 111, and the other end is sleeved outside the partition part 121; the bulge 111 is prevented from being dislocated with the buffer spring in the process of extending into the cavity of the support seat 12, so that the buffer spring cannot realize the effect of buffering pressure.

Preferably, the outer side wall of the protrusion 111 is provided with a guide rib 126 for guiding the buffer spring, and the guide rib 126 also reinforces the strength of the protrusion 111. The guide ribs 126 extend in the axial direction of the projection 111 and are uniformly spaced in the circumferential direction.

Example four

In this embodiment, the top end of the support seat 12 includes a fixing portion 124, the upper support 11 is provided with a matching portion 112 abutting against the fixing portion 124, the fixing portion 124 is configured to bear the pressure applied to the support seat 12 by the upper support 11 and apply a reaction force to the upper support 11 through the fixing portion 124, and the matching portion 112 is configured to bear the pressure applied to the upper support 11 by the support seat 12 and apply a reaction force to the support seat 12 through the matching portion 112. The gasket 15 is arranged between the fixing part 124 and the matching part 112, so that the actions of the fixing part and the matching part are slowed down, the vibration is reduced, and noise and abnormal sound are avoided. The pad 15 is made of an elastic material. Preferably, the fixing portion 124 is disposed to protrude from the outer periphery of the supporting seat 12, and the engaging portion 112 is disposed to protrude from the outer periphery of the upper support 11, so as to increase the area of the mutual abutting between the fixing portion 124 and the engaging portion 112.

Further, the damping device further comprises a damping spring 4 and a base 3, one end of the suspender 2 penetrates through the upper support assembly 1 and the damping spring 4 to be connected with the base 3, and the damping spring 4 is abutted between the base 3 and the upper support assembly 1; the upper supporting component 1 is connected with an outer barrel of the washing machine or connected with a box body of the washing machine, and the other end of the suspender 2 is connected with the box body of the washing machine or connected with the outer barrel of the washing machine. Preferably, the damping spring 4 abuts between the fixing portion 124 of the supporting seat 12 and the base 3. Preferably, a stopper 125 for preventing the damping spring 4 from being detached is disposed at an outer edge of the fixing portion 124, and the stopper 125 is a protrusion extending from the edge of the fixing portion 124 toward the base 3.

EXAMPLE five

In this embodiment, the vibration damping device further includes a waterproof cap 6 sleeved outside the suspension rod 2, and the upper support 11 is disposed between the waterproof cap 6 and the support seat 12; water is prevented from entering the support seat 12 from the upper support 11, and the damping effect of the damping structure 13 is reduced.

In a preferred embodiment, the waterproof cap 6 includes a sealing sleeve 61 that is sleeved on the suspension rod 2 and a water blocking portion 62 that extends from the sealing sleeve 61 to the outer periphery, and a surface of the water blocking portion 62 opposite to the upper support 11 is a water guiding surface that is inclined from the center to the outer periphery. The sealing sleeve 61 prevents water from entering the pop-up assembly along the boom 2, and the water blocking portion 62 prevents water from entering the pop-up assembly from the periphery thereof. In a preferred embodiment, the sealing sleeve 61 and the water retaining part 62 cooperate to form an umbrella-shaped structure; in another preferred embodiment, the sealing sleeve 61 and the water stop portion 62 cooperate to form an umbrella-shaped structure in which the sealing sleeve is disposed outside the water stop portion.

EXAMPLE six

In the embodiment, the washing machine comprises a box body, an outer barrel and a vibration damper, wherein the vibration damper comprises a hanging rod 2, an upper supporting assembly 1, a vibration damper spring 4 and a base 3, one end of the hanging rod 2 penetrates through the upper supporting assembly 1 and the vibration damper spring 4 to be connected with the base 3, the upper supporting assembly 1 is connected with the outer barrel of the washing machine, the other end of the hanging rod 2 is connected with the box body of the washing machine, and the vibration damper spring 4 is compressed or elongated to realize vibration damping in the washing or dewatering process of the washing machine.

The upper support assembly 1 comprises a supporting seat 12, an upper support 11 and a damping structure 13, wherein the damping structure 13 is arranged between the supporting seat 12 and the upper support 11, and the damping force generated by the upper support 11 to the suspension rod 2 is changed under the extrusion of the supporting seat 12. The pop-up component 1 further comprises a buffer structure 14 for buffering the compression of the damping structure 13; preferably, the buffer structure 14 abuts between the upper support 11 and the support seat 12. The pop-up 11 includes the cooperation portion 112 that supports each other with supporting seat 12 and lean on, cooperation portion 112 one end is equipped with the bulge 111 that stretches into supporting seat 12 cavity, and the other end is equipped with the convex connecting portion 113 of being connected with outer bucket, connecting portion 113 is the frustum column structure that inside was equipped with the through-hole that supplies jib 2 to pass, conveniently is connected with outer bucket, pop-up 11 with scribble lubricating grease between the jib 2. A vibration damping pad 5 is arranged between the upper support 11 and the outer barrel, so that vibration damping between the upper support and the outer barrel is realized, and noise and abnormal sound caused by mutual movement between the upper support and the outer barrel are avoided.

Base 3 is including the projection that leans on damping spring 4's bottom plate and protrusion bottom plate to set up, damping spring 4 cover is established outside the projection, the projection periphery is equipped with the strengthening rib 31 of reinforcing projection intensity, the axial protrusion setting of strengthening rib 31 along the projection is in the periphery of projection to even interval sets up, establishes damping spring 4 cover and still has the guide effect outside the projection. The inside through-hole that supplies jib 2 to pass that is equipped with of base 3, 2 tip of jib are equipped with the disc that prevents jib 2 and break away from base 3.

The vibration damper also comprises a hanging rod seat 7, and the hanging rod 2 is connected with the washing machine box body through the hanging rod seat 7.

The above description is only for the preferred embodiment of the present invention, and not intended to limit the present invention in any way, and although the present invention has been disclosed by the preferred embodiment, it is not intended to limit the present invention, and those skilled in the art can make further combinations or substitutions of the above embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the present invention.

Claims (10)

1. The utility model provides a vibration damper of washing machine, its characterized in that establishes the subassembly that asks on in the jib outside including jib and cover, the subassembly that asks on includes supporting seat, asks on, damping structure and buffer structure, damping structure sets up the ask on with between the supporting seat, be used for with ask on with the extrusion force of supporting seat at least part convert right the variable damping force of jib, buffer structure supports ask on with between the supporting seat, be used for the buffering the extrusion force that damping structure bore.

2. A vibration damping device for a washing machine as claimed in claim 1, wherein an end of said support base opposite to said upper bracket includes a cavity opening toward said upper bracket, said upper bracket is at least partially movably disposed in said cavity, said damping structure is disposed between said cavity and said upper bracket, and said cushioning structure is supported between said upper bracket and said cavity.

3. The vibration damper according to claim 2, wherein a partition portion for partitioning the cavity into a first chamber and a second chamber is further provided in the cavity of the support base, the damping structure is provided in the first chamber, and the buffer structure is provided in the second chamber;

preferably, the first chamber is coaxially arranged inside the second chamber;

preferably, the partition part is an annular partition plate integrally formed in the support seat, and the buffer structure is sleeved outside the partition part.

4. The vibration damper of washing machine as claimed in claim 3, wherein a limit portion is further provided in the first chamber, one end of the damping structure in the axial direction abuts against the limit portion, and the other end protrudes from the partition portion and abuts against the upper bracket.

5. The vibration damper according to any one of claims 1 to 4, wherein the damping structure comprises a damping ring in interference fit with the suspension rod, and the buffer structure comprises a buffer spring sleeved outside the damping ring.

6. The vibration damper of a washing machine as claimed in claim 5, wherein the upper bracket is provided with a protrusion extending into the cavity of the supporting seat, and an end surface of the protrusion extending into the cavity abuts against the damping ring;

preferably, one end of the buffer spring in the axial direction is sleeved outside the protruding part, and the other end of the buffer spring is sleeved outside the separating part;

preferably, the outer side wall of the protruding portion is provided with a guide rib for guiding the buffer spring.

7. The vibration damper of a washing machine as claimed in claim 5, wherein the top end of the supporting base includes a fixing portion, the upper bracket is provided with an engaging portion which abuts against the fixing portion, and a pad is provided between the fixing portion and the engaging portion;

preferably, the fixed part protrudes from the periphery of the supporting seat, and the matching part protrudes from the periphery of the upper support.

8. The vibration damper of a washing machine as claimed in claim 7, wherein said vibration damper further comprises a vibration damper spring and a base, one end of said suspension rod passes through said upper supporting assembly and said vibration damper spring to be connected with said base, and said vibration damper spring is abutted between said base and said upper supporting assembly;

preferably, the damping spring abuts against between the fixing part and the base;

preferably, the outer edge of the fixing part is provided with a limiting part for preventing the damping spring from being separated.

9. The vibration damper of a washing machine as claimed in claim 1, further comprising a waterproof cap fitted over an exterior of said suspension rod, said upper bracket being disposed between said waterproof cap and said support base;

preferably, the waterproof cap comprises a sealing sleeve sleeved on the suspender and a water blocking part extending from the sealing sleeve to the periphery, and the surface of the water blocking part opposite to the upper support is a water guiding surface inclined from the center to the periphery.

10. A washing machine characterized by comprising a vibration damping device of a washing machine as claimed in any one of claims 1 to 9.

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