CN110846855A

CN110846855A - Damping device for washing machine and pull-out washing machine

Info

Publication number: CN110846855A
Application number: CN201810948274.1A
Authority: CN
Inventors: 赵志强; 许升; 吕佩师; 杨旭光
Original assignee: Qingdao Haier Washing Machine Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd
Priority date: 2018-08-20
Filing date: 2018-08-20
Publication date: 2020-02-28

Abstract

The invention provides a damping device for a washing machine and a drawing type washing machine, wherein the damping device for the washing machine comprises: a plunger having a first connecting structure at one end; the sleeve is internally provided with a hollow cavity with one end opened, the other end of the plunger piston is sleeved in the hollow cavity of the sleeve in a relatively sliding manner, and a second connecting structure is arranged at one end, opposite to the opening of the hollow cavity, of the sleeve; the first damping spring is sleeved outside the plunger; the second damping spring is sleeved outside the sleeve; and the sliding sleeve is slidably sleeved outside the plunger/sleeve and is positioned between the first damping spring and the second damping spring. The damping device adopts a supporting damping mode, ensures the damping effect through the damping adjustment of the first damping spring and the second damping spring, and is particularly suitable for damping of the pull-out washing machine.

Description

Damping device for washing machine and pull-out washing machine

Technical Field

The invention relates to the technical field of clothes washing equipment, in particular to a damping device for a washing machine and a pull-out type washing machine.

Background

The washing machine, as a household appliance which is most widely used, has an important position in people's life, but with the development and progress of society, the use experience requirements of people for the washing machine are higher and higher, and the classification washing according to the types of clothes or different user requirements has gradually become a trend. However, because of the limitation of the space of the household and the related accessories of the washing machines, not all households can place the second or even the third washing machine, so how to improve the structure of the existing washing machine to better meet the classified washing requirements of users becomes a technical problem which needs to be solved urgently.

In order to solve the above problems, the prior application No. 201310290147.4, application date 2013-07-09, entitled chinese invention patent of a dual drum washing machine, discloses a dual drum washing machine, including: the washing machine comprises a washing machine frame body, a first outer cylinder and a second outer cylinder, wherein the first outer cylinder and the second outer cylinder are arranged in the washing machine frame body; the first outer cylinder and the second outer cylinder are connected into a whole through a connecting piece; the connecting piece is fixedly connected with the counterweight mounting column on the first outer cylinder and/or the second outer cylinder. The first outer cylinder and the second outer cylinder are connected into an integral structure through the connecting piece so as to effectively improve the compactness of the washing machine, and the connecting piece is fixedly installed and connected through the counterweight mounting column on the first outer cylinder or the second outer cylinder so as to improve the stability of the washing machine; a common balance weight is provided for the first outer cylinder and the second outer cylinder through the connecting piece; in addition, the first outer cylinder and the second outer cylinder use a common balance weight, and the first outer cylinder or the second outer cylinder of the washing machine is used as at least one part of the balance weight of the second outer cylinder or the first outer cylinder, so that the two drums of the washing machine have obvious damping effect, and the production cost is reduced.

The invention provides a double-drum washing machine, which solves the problem of classified washing of the washing machine, but is limited by a top-opening type mode of the pulsator washing machine for users who are more suitable for the pulsator washing machine, and the problem cannot be solved by vertically overlapping two pulsator washing machines.

In view of this, how to improve the structural style of the pulsator washing machine, reduce the occupied placing space, and how to realize a compound structure in which the pulsator washing machine is stacked up and down is the main technical problem to be solved by the present invention.

Disclosure of Invention

In order to solve the above problems, a first aspect of the present invention is to provide a damping device for a washing machine, which specifically adopts the following technical solutions:

a shock-absorbing device for a washing machine, comprising:

a plunger having a first connecting structure at one end;

the sleeve is internally provided with a hollow cavity with one end opened, the other end of the plunger piston is sleeved in the hollow cavity of the sleeve in a relatively sliding manner, and a second connecting structure is arranged at one end, opposite to the opening of the hollow cavity, of the sleeve;

the first damping spring is sleeved outside the plunger;

the second damping spring is sleeved outside the sleeve;

and the sliding sleeve is slidably sleeved outside the plunger/sleeve and is positioned between the first damping spring and the second damping spring.

Further, the plunger on be close to first connection structure's one end and set up first bracket, the sleeve on be close to second connection structure's one end and set up the second bracket, the sliding sleeve spacing convex part of circumference evagination, first damping spring's one end is only supported on first bracket, and the other end is only supported on spacing convex part, second damping spring's one end is only supported on the second bracket, the other end is only supported on spacing convex part.

Furthermore, one end of the plunger, which is close to the first connecting structure, is provided with a limiting bulge, the first bracket is an annular flange, the center of the first bracket is provided with a limiting groove, and the limiting groove of the first bracket is matched with the limiting bulge on the plunger to realize the limiting installation of the first bracket;

the second bracket is an annular flange formed by outwards protruding the periphery of one end of the sleeve, which is close to the second connecting structure.

Further, the first damping spring and the second damping spring have different elastic coefficients;

preferably, the first connecting structure is connected with the supported damper, the second connecting structure is connected with the fixed support, and the elastic coefficient of the first damper spring is smaller than that of the second damper spring.

Furthermore, a sleeve friction plate is arranged in the hollow cavity of the sleeve, and one end of the plunger is sleeved in the hollow cavity of the sleeve and keeps in contact with the sleeve friction plate.

Furthermore, the sleeve friction plate is an annular friction plate, and a plurality of annular friction plates are uniformly arranged in the hollow cavity of the sleeve along the axial direction of the hollow cavity.

Furthermore, a sliding sleeve friction plate which is in contact with the outer wall of the plunger/sleeve is arranged in the sliding sleeve.

Furthermore, the first connecting structure is a connecting thread arranged at one end part of the plunger, and the connecting thread is matched with a nut to fixedly connect the plunger to the supported damping body;

the second connecting structure is a connecting thread arranged at one end of the sleeve, and the connecting thread is matched with the nut to fixedly connect the sleeve on the fixed support body.

The second invention of the present invention is to provide a pull-out washing machine, specifically, the following technical solutions are adopted:

a pull-out washing machine comprises a shell and a washing unit, wherein an accommodating chamber is arranged in the shell, and an opening is formed in the side wall of one side of the shell; the washing unit is arranged in the accommodating cavity inside the shell and can be pushed in/pulled out from the opening of the shell;

the washing unit comprises a mounting rack and a washing barrel assembly arranged on the mounting rack, and the washing barrel assembly is supported in the mounting rack through a damping device; the damping device includes:

a plunger having a first connecting structure at one end;

the first damping spring is sleeved outside the plunger;

the second damping spring is sleeved outside the sleeve;

Furthermore, the washing barrel assembly comprises an outer barrel and an inner barrel which is rotatably arranged in the outer barrel, the mounting frame comprises a base, and the outer barrel is mounted on the base through a damping device;

preferably, a plurality of damping lugs are uniformly arranged on the periphery of the outer barrel, and the damping device is arranged between the damping lugs and the base.

The damping device comprises a first damping spring and a second damping spring, wherein when small impact is received, the first damping spring is compressed to perform damping adjustment, and when large impact is received, the first damping spring and the second damping spring are compressed together to perform damping adjustment. The damping device adopts a supporting damping mode, and ensures the damping effect through the damping adjustment of the first damping spring and the second damping spring.

Drawings

Fig. 1 is a front view of a drawer type washing machine according to a first embodiment and a second embodiment of the present invention;

fig. 2 is a side view of a drawer type washing machine according to a first embodiment and a second embodiment of the present invention;

fig. 3 is a side view of the drawer type washing machine according to the first and second embodiments of the present invention (in a state where the washing unit is pulled open);

fig. 4 is a schematic perspective view of a drawer-type washing machine according to a first embodiment and a second embodiment of the present invention;

fig. 5 is a sectional view of a drawing type washing machine according to the first and second embodiments of the present invention, taken along the plane a-a in fig. 1;

fig. 6 is a sectional view of a drawing type washing machine according to the first and second embodiments of the present invention, taken along the plane B-B in fig. 1;

fig. 7 is a schematic perspective view of a drawer type washing machine according to the first and second embodiments of the present invention (with the top plate and the side plate of the housing removed and the washing unit closed);

fig. 8 is a schematic perspective view of a drawer type washing machine according to the first and second embodiments of the present invention (the top plate and the side plate of the housing are removed, and the washing unit is pulled open);

FIG. 9 is a perspective view of a shock absorber according to a third embodiment of the present invention;

FIG. 10 is a front view of a shock-absorbing device according to a third embodiment of the present invention;

FIG. 11 is a sectional view of a shock-absorbing device according to a third embodiment of the present invention taken along the plane C-C in FIG. 10 (first embodiment);

FIG. 12 is a sectional view of a damper device according to a third embodiment of the present invention taken along the plane C-C in FIG. 10 (second embodiment);

FIG. 13 is a plan view of a damper device according to a third embodiment of the present invention;

FIG. 14 is a schematic perspective view of a damper according to a fourth embodiment of the present invention;

FIG. 15 is a front view of a damper according to a fourth embodiment of the present invention;

FIG. 16 is a cross-sectional view of a four example embodiment of a shock absorbing device of the present invention taken along the plane D-D in FIG. 15 (embodiment one);

FIG. 17 is a sectional view of a damper device according to a fourth embodiment of the present invention taken along the D-D plane in FIG. 15 (embodiment II);

FIG. 18 is a schematic perspective view of a damper according to a fifth embodiment of the present invention;

FIG. 19 is a front view of a fifth embodiment of the shock absorbing device of the present invention;

FIG. 20 is a cross-sectional view taken along the plane E-E in FIG. 19 of a five shock absorbing device in accordance with an embodiment of the present invention;

FIG. 21 is a schematic perspective view of a damper according to a sixth embodiment of the present invention;

FIG. 22 is a front view of a shock absorbing device according to a sixth embodiment of the present invention;

FIG. 23 is a cross-sectional view taken along plane F-F of FIG. 22 of a six-mode vibration damping device in accordance with an embodiment of the present invention.

Detailed Description

The damping device for a washing machine and the pull-out type washing machine of the present invention will be described in detail with reference to the accompanying drawings:

example one

As shown in fig. 1 to 8, the pull-out washing machine of the present embodiment includes a housing 5 and a washing unit, wherein the housing 5 has an accommodating chamber therein, and a side wall of the housing 5 is opened; the washing unit is mounted in a housing chamber inside the housing 5 and can be pushed in/out through an opening of the housing.

The drawing type washing machine changes the top opening type of the existing pulsator washing machine into the drawing type, reduces the requirement on the placing space, can be placed in wider positions, such as any positions below or above a hand basin or on a rack of a wall body, can also be stacked up and down with the traditional pulsator washing machine to form an integrated compound structure, or can be stacked up and down to form an integrated compound structure, and better meets the selection of a user on the type of the washing machine and the selection of classified washing of clothes.

Therefore, the drawing type washing machine is different from the traditional impeller type washing machine, the space is fully utilized, various washing spaces are provided for users, and the requirement of classified washing is met.

Further, the washing unit of this embodiment includes mounting bracket 11 and the washing bucket subassembly of installing on the mounting bracket, mounting bracket 11 include two parallel relative settings's curb plate, pass through slide rail slidable connection between the inside wall of both sides board and casing accommodation chamber respectively.

The slide rail of this embodiment includes interior track 9 and outer track 41, and interior track 9 fastening has set up interior slide rail erection column 10 on mounting bracket 11, and outer track 41 fastening has set up outer track fixed bolster 35 on the casing 5 bottom on the casing.

The inner rail 9 and the outer rail 41 of the embodiment can be in sliding friction operation, rollers, balls and gears can be arranged between the inner rail 9 and the outer rail 41, the inner rail and the outer rail can be pushed and pulled smoothly, the bearing is large, a damping structure can be arranged to realize damping such as damping grease, the drawer can be closed softly even if the drawer is pushed by force, and perfect and soft movement is guaranteed.

Further, the washing tub assembly of the present embodiment includes an outer tub 20 and an inner tub 21 rotatably disposed in the outer tub 20, the mounting frame 11 includes a base, and the outer tub 20 is mounted on the base through a shock-absorbing device 36.

Preferably, a plurality of shock absorbing lugs 34 are uniformly arranged on the outer circumference of the outer tub 20, and the shock absorbing device 36 is installed between the shock absorbing lugs 34 and the base. The drawing type washing machine of the embodiment combines the structural characteristics of the drawing type washing machine, adopts the damping device 36 supporting the damping mode, can be favorable for further reducing the overall height of the drawing type washing machine, and ensures the damping stability of the drawing type washing machine.

Further, the bottom of the outer tub 20 of the present embodiment has a motor 22 for driving the inner tub 21 or the pulsator to rotate through a driving shaft 23.

Further, the mounting rack 11 of this embodiment includes an upper cover plate 16 for covering the opening of the outer tub, the upper cover plate 16 is provided with an opening corresponding to the inner tub 21, and the opening is provided with a door cover 15 capable of being opened/closed; the upper cover plate 16 is provided with a laundry treating agent putting box for containing a laundry treating agent.

The upper cover plate 16 is arranged on the upper portion of the mounting frame, the mounting frame is attractive in appearance, and the door cover 15 is arranged and can be opened through rotation of the rotating shaft 14, so that clothes can be taken and put.

Further, the washing unit comprises a front panel 3, the front panel 3 is mounted on the mounting frame 11 and seals an opening of the accommodating chamber after the washing unit is pushed into the accommodating chamber inside the housing;

preferably, a control panel 19 is arranged on the front panel 3, and the control panel 19 is arranged on the upper part of the front panel and is used for a user to input a control instruction;

preferably, a handle 2 is provided on the front panel 3.

In this embodiment, two space angles near the front panel on the upper cover plate 16 are provided with laundry treating agent feeding boxes, such as a detergent feeding box 17 and a softener feeding box 18, and a hose is connected to the inner barrel 21 or the outer barrel 20.

The shell of the embodiment is provided with a water inlet 7 which is connected with an electromagnet 30 and communicated with the treating agent feeding box through a water inlet pipe 32.

The shell of the embodiment is provided with a water outlet 8 which is used for connecting a water outlet pipe 28 to a floor drain; the water discharge pipe 28 is connected to a water discharge pump 29, and the water discharge hose 26 is connected to the outer tub 20.

Because the washing unit need often push into, take out and put the clothing, in order to guarantee that water intake pipe, water drainage pipe and each connecting circuit do not receive the harm at the in-process of pull, this embodiment adopts following technical scheme:

in the embodiment, the shell is provided with a water inlet electromagnetic valve which is communicated with the washing unit through a water inlet pipeline; the washing machine comprises a first linkage protective body for protecting a water inlet pipeline in the process of pushing and pulling a washing unit, wherein one end of the first linkage protective body is connected to the shell, the other end of the first linkage protective body is connected to the washing unit, and an accommodating channel for accommodating the water inlet pipeline is arranged in the first linkage protective body;

preferably, the laundry machine comprises a power line for supplying power to the control panel, the electromagnetic valve is electrically connected with the control panel through a connecting wire, and the power line and/or the connecting wire are/is arranged in the accommodating channel inside the first linkage protection body.

In this embodiment, the washing unit is provided with a water outlet which is communicated with the water discharge control device through a water discharge pipeline, the washing machine comprises a second linkage protection body for protecting the water discharge pipeline in the process of pushing and pulling the washing unit, one end of the second linkage protection body is connected to the shell, the other end of the second linkage protection body is connected to the washing unit, and an accommodating channel for accommodating the water discharge pipeline is arranged inside the second linkage protection body;

preferably, the washing machine includes a driving device installed at the bottom of the outer tub, the driving device is electrically connected with the control panel through a connection wire, and the connection wire is disposed in the receiving channel inside the second linkage protection body.

Further, the housing of this embodiment is provided with a detection device 12 for sensing whether the washing unit is pushed into the accommodating chamber;

preferably, the detecting device 12 is a photoelectric sensing switch or a reed switch.

The inductive switch of the embodiment ensures that the washing unit is closed in place, and the washing program or the alarm is not executed when the washing unit is not in place.

Further, the washing unit of this embodiment has a door lock, the housing is provided with a latch 13, and the door lock and the latch 13 are locked after the washing unit is pushed into the accommodating chamber. The door lock structure of this embodiment is in case the start-up passes through electromagnetic door lock and the casing locking is integrative with whole washing unit, effectively reduces the vibration, improves the slide rail life-span.

The bottom of the shell 5 of the embodiment is provided with a supporting foot 4 to support and level the whole machine of the pull-out washing machine, so as to ensure the working stability.

The housing 5 of this embodiment has a profiling 6 to increase the strength of the whole machine, and the housing 5 has an upper deck plate 1 with an opening in the front for the washing unit to enter and exit.

The overall height of the pull-out washing machine of the embodiment is less than 60cm, preferably less than or equal to 50cm, and more preferably less than or equal to 40 cm. The pull-out washing machine of the embodiment changes the top-opening mode of the existing pulsator washing machine, can greatly reduce the height of the whole machine, further reduces the requirement on the placement space, can be made into a miniature washing machine with smaller specification and size, and realizes classified washing.

Example two

As shown in fig. 1 to 8, the pull-out washing machine of the present embodiment includes a housing 5 and a washing unit, wherein the housing 5 has an accommodating chamber therein, and a side wall of the housing is opened with an opening; the washing unit is arranged in the accommodating cavity inside the shell and can be pushed in/pulled out from the opening of the shell;

the washing machine further comprises a linkage protection body, two ends of the linkage protection body are respectively connected to the shell 5 and the washing unit, and an accommodating channel used for accommodating a water path communicated with the washing unit and/or a circuit electrically connected with an electrical element of the washing unit is arranged in the linkage protection body.

In order to ensure that a water path communicated with the washing unit and/or a circuit electrically connected with an electrical element of the washing unit is not damaged in the drawing process, the pull-out type washing machine of the embodiment adopts the linkage protective body internally provided with the accommodating channel, and the linkage protective body is linked with the water path communicated with the washing unit and/or the circuit electrically connected with the electrical element of the washing unit in the drawing process of the washing unit so as to ensure the connection stability of the circuit.

As an implementation manner of this embodiment, the linkage protection body is a drag chain structure, the interior of the drag chain structure has an accommodating channel, and the waterway or the circuit is disposed in the accommodating channel inside the drag chain structure.

Specifically, the washing unit of the present embodiment includes an outer tub 20 for holding water, the housing 5 is provided with a water inlet solenoid valve 30, and the water inlet solenoid valve 30 is communicated with the outer tub 20 through a water inlet pipeline 32; the linkage protector includes a first linkage protector 31 for protecting a water inlet pipe 32 in the process of pushing and pulling the washing unit, and the first linkage protector 31 has a receiving passage for receiving the water inlet pipe therein.

The washing unit comprises a mounting frame 11 and a front panel 3, the front panel 3 is mounted on the mounting frame 11 and seals an opening of an accommodating chamber after the washing unit is pushed into the accommodating chamber in the shell, and a control panel 19 is arranged on the front panel 3;

the washing machine comprises a power line for supplying power to the control panel, the electromagnetic valve 30 is electrically connected with the control panel 19 through a connecting wire, and the power line and/or the connecting wire are/is arranged in the accommodating channel inside the first linkage protective body 31.

The washing unit of this embodiment includes an outer tub 20 for holding water, a drain opening is formed at the bottom of the outer tub 20 and communicated with a drain control device through a drain line 26, the linkage protection body includes a second linkage protection body 24 for protecting the drain line during the process of pushing and pulling the washing unit, and the second linkage protection body 24 has an accommodating passage for accommodating the drain line 26 therein.

The drawing type washing machine of the embodiment comprises a driving device 22 installed at the bottom of an outer barrel 20, wherein the driving device 22 is electrically connected with a control panel 19 through a connecting wire, and the connecting wire is arranged in a containing channel inside a second linkage protection body 24.

The water route pipeline and the circuit line of this embodiment all set up in the tow chain structure:

the avoidance space of the water inlet and outlet pipeline, the drive control circuit 27 and the signal line is greatly reduced, so that the space and the cost can be effectively saved, and the volume of the washing unit is effectively improved.

The lines (drain line, drive control circuit, signal lines) are gently guided regardless of the sudden, violent, high speed, long stroke, omni-directional dragging motion of the scrubbing unit by the user, greatly extending the life of the wires/inlet/drain.

Preferably, 15% of the remaining space should be left after the hose line is placed in a dragging mode, so that the built-in cable, hose and the like can move freely, and no pulling force is generated on the drag chain in the radius direction.

As an embodiment of the present embodiment, a guiding mechanism for guiding the interlocking protector to move along a predetermined trajectory is disposed in the accommodating chamber of the housing 5.

Specifically, the guiding mechanism is a guiding rail 38 arranged along the drawing direction of the washing unit, the guiding rail is provided with a guiding groove, the linkage protection body is a drag chain, one end of the drag chain is a fixed end 40, the fixed end 40 is fixedly arranged on the shell 5, the other end of the drag chain is a movable end 39, the movable end 39 is connected with a guiding column 37, and the guiding column 37 is slidably arranged in the guiding groove of the guiding rail 38 and performs reciprocating linear motion along with the drawing and pulling of the washing unit.

The guide structure of the present embodiment may be provided on the first and/or

second interlock protectors

31 and 24.

As an implementation manner of this embodiment, the linkage protection body is an elastic tubular structure made of a flexible material, an accommodating channel is provided inside the tubular structure, and the water path or the circuit is disposed inside the accommodating channel inside the drag chain structure.

As an implementation manner of this embodiment, the linkage protection body is of a telescopic tube structure, an accommodating channel is arranged inside the telescopic tube structure, and the water path or the circuit is arranged in the accommodating channel inside the drag chain structure.

EXAMPLE III

As shown in fig. 1 to 13, a damper device 36 for a washing machine of the present embodiment includes:

a plunger 47 having a first connecting structure 44 at one end;

the sleeve 50 is internally provided with a hollow chamber with one open end, the other end of the plunger 47 can be sleeved in the hollow chamber of the sleeve 50 in a relatively sliding manner, and the end, opposite to the open end of the hollow chamber, of the sleeve 50 is provided with a second connecting structure 53;

a first damping spring 48 sleeved outside the plunger 47;

a second damping spring 51 sleeved outside the sleeve 50;

and a sliding sleeve 49 slidably fitted over the plunger 47/sleeve 50 and located between the first and second damping

springs

48 and 51.

The damper device 36 of the present embodiment includes a first damper spring 48 and a second damper spring 51, and the first damper spring 48 is compressed for damper adjustment when a small impact is received, and the first damper spring 48 and the second damper spring 51 are compressed together for damper adjustment when a large impact is received. The damping device 36 of the present embodiment adopts a supporting damping manner, and the damping effect is ensured by the damping adjustment of the first damping spring 48 and the second damping spring 51.

Further, in the present embodiment, a first bracket 46 is disposed at one end of the plunger 47 close to the first connecting structure 44, a second bracket 52 is disposed at one end of the sleeve 50 close to the second connecting structure 53, the sliding sleeve 49 has a circumferentially protruding limit protrusion, one end of the first damping spring 48 abuts against the first bracket 46, the other end abuts against the limit protrusion, one end of the second damping spring 51 abuts against the second bracket 52, and the other end abuts against the limit protrusion.

Specifically, one end of the plunger 47 close to the first connecting structure 44 is provided with a limiting protrusion, the first bracket 46 is an annular flange, the center of the first bracket 46 is provided with a limiting groove 45, and the limiting groove 45 of the first bracket 46 is matched with the limiting protrusion on the plunger 47 to realize the limiting installation of the first bracket;

the second bracket 52 is an annular flange formed on the sleeve 50 and protruding outward from the outer periphery of the end near the second connecting structure 53.

As an embodiment of the present embodiment, the first damping spring 48 and the second damping spring 51 have different elastic coefficients;

preferably, the first connecting structure 44 is connected to the supported damper, the second connecting structure 53 is connected to the fixed support, and the elastic coefficient of the first damper spring 48 is smaller than that of the second damper spring 51.

In an embodiment of this embodiment, a friction plate 54 is disposed in the hollow chamber of the sleeve 50, and an end of the plunger 47 is sleeved in the hollow chamber of the sleeve 50 and keeps in contact with the friction plate 54.

Further, the friction plate 54 is an annular friction plate, and a plurality of annular friction plates are uniformly arranged in the hollow cavity of the sleeve along the axial direction of the hollow cavity.

As an embodiment of this embodiment, a friction plate 54 is disposed in the sliding sleeve 49 and contacts with the outer wall of the plunger 47/sleeve 50.

As an embodiment of this embodiment, the first connecting structure 44 is a connecting thread provided at an end of one end of the plunger 47, and the connecting thread cooperates with a nut to fixedly connect the plunger to the supported damper;

the second connecting structure 53 is a connecting thread provided at an end of one end of the sleeve 50, and the connecting thread cooperates with the nut to fixedly connect the sleeve to the fixed support.

The damper device of the present embodiment has a first connection structure 44 and a second connection structure 53 for fixing the outer tub 20 and the casing 5.

A friction plate is arranged between a plunger and a sleeve of the damping device, and damping is carried out by the friction force generated when the friction plate and the plunger reciprocate.

The vibration damping device comprises a vibration damping spring which is a main energy storage unit and converts the kinetic energy of vibration into the elastic potential energy of the spring so as to buffer the vibration energy and provide the reciprocating motion of the vibration. The damping springs are a first damping spring 48 and a second damping spring 51 arranged in series.

The bottom of the sleeve is provided with a second bracket, the middle of the sleeve is provided with a sliding sleeve, the first damping spring 48 is placed behind the second bracket through a tool, the sliding sleeve is placed, the second damping spring 51 is placed on the sliding sleeve, pressure is applied through the tool to shorten the damping spring, the first bracket is provided with an assembly groove, the width of the assembly groove is larger than the diameter of the plunger, the tool is removed, and the restoring force of the first damping spring 48 is used for realizing complete assembly.

When the dehydration is carried out stably at a high speed, the vibration with small impact force and small amplitude can only be realized, and the vibration of the first damping spring 48 is used as an energy storage unit; the small friction damping force is the friction force between the plunger and the friction plate. When the dehydration goes up high speed suddenly, big impact force, big amplitude vibration can realize playing first damping spring 48 and second damping spring 51's vibration, and first damping spring 48 and second damping spring 51 regard as the energy storage unit shock attenuation jointly, and at this moment, big frictional damping power is the frictional force of plunger and friction disc + the frictional force of sleeve and sliding sleeve, can effectively cushion, realizes washing machine even running, reduces vibration and the noise that produces thereupon.

It is conceivable that the spring assembly is provided within a sleeve or the like.

Example four

As shown in fig. 1 to 8 and 14 to 17, a shock absorbing device 36 for a washing machine of the present embodiment includes:

a plunger 47 having a first connecting structure 44 at one end;

a first damping spring 48 sleeved outside the plunger 47;

a second damping spring 51 sleeved outside the sleeve 50;

springs

48 and 51;

the first damper spring 48 and the second damper spring 51 partially overlap to shorten the overall height thereof.

As an implementation manner of this embodiment, the damping device for a washing machine in this embodiment has a first limiting portion for stopping one end of the first damping spring 48 and a second limiting portion for stopping one end of the second damping spring 51 on the sliding sleeve 49, where the first limiting portion extends into an axial height range of the second damping spring, and the second limiting portion extends into an axial height range of the first damping spring.

Further, the first damping spring 48 is disposed at an upper portion of the second damping spring 51, and a height of the first position limiting portion is lower than a height of the second position limiting portion.

Specifically, the first limiting portion is a limiting cavity formed by extending towards the inside of the second damping spring and arranged in the middle of the sliding sleeve, and one end of the first damping spring abuts against the limiting cavity; the second limiting part is a limiting flange formed by circumferentially extending the edge of an opening of the limiting cavity, and one end of the second damping spring abuts against the limiting flange.

The structural design of this embodiment sliding sleeve 49 makes first damping spring 48 and second damping spring have certain coincidence space distance H, realizes whole absorbing highly reducing H, effectively reduces the height of bumper shock absorber, and the installation of being convenient for solves washing machine's installation space.

preferably, the outer diameter of the first damper spring 48 is smaller than the inner diameter of the second damper spring 51;

As an embodiment of this embodiment, the plunger 47 and the opening of the hollow chamber of the sleeve 50 are spaced apart from each other, so that the damping device swings to a certain extent from side to side, and has a certain adjustment function in the horizontal direction.

In one embodiment of this embodiment, a friction plate 54 is disposed on the plunger 47 at an end thereof located inside the hollow chamber, and the friction plate is in contact with the inner wall of the hollow chamber of the sleeve.

As an embodiment of this embodiment, a sliding sleeve friction plate 54 is disposed in the sliding sleeve 49 and contacts with the outer wall of the plunger/sleeve.

EXAMPLE five

As shown in fig. 1 to 8 and fig. 18 to 20, a damper device 36 for a washing machine of the present embodiment includes:

a plunger 47 having a first connecting structure 44 at one end and a sliding plug body at the other end;

a sleeve 49 having a hollow chamber with an open end therein, wherein the sliding plug body of the plunger 47 is slidably disposed in the hollow chamber of the sleeve 49, and a second connecting structure 53 is disposed on the sleeve 49 at an end opposite to the open end of the hollow chamber;

a first damping spring 48 sleeved outside the plunger 47 in the hollow chamber;

the second damping spring 51 is sleeved in the hollow cavity of the sleeve 49;

the first damper spring 48 and the second damper spring 51 are respectively located on both sides of the sliding plug body of the plunger 47.

The damping device 36 of the embodiment adopts a supporting damping mode, and the damping adjustment is carried out through the series connection of the first damping spring 48 and the second damping spring 51, so that the damping effect is ensured.

As an embodiment of the present embodiment, the sliding plug is disposed at an end of the plunger 47 located at one end in the hollow chamber of the sleeve 49, and the sliding plug is in sliding contact with an inner wall of the hollow chamber of the sleeve 49;

the first damping spring 48 is sleeved outside the plunger 47 in the hollow cavity, one end of the first damping spring abuts against the inner wall of the hollow cavity of the sleeve 49, and the other end of the first damping spring abuts against one side of the sliding plug body;

the second damping spring 51 is sleeved in the hollow cavity of the sleeve 49, one end of the second damping spring abuts against the inner wall of the hollow cavity of the sleeve, and the other end of the second damping spring abuts against the other side of the sliding plug body.

Furthermore, the plunger comprises a cylinder, one end of the cylinder is provided with a first connecting structure, and the other end of the cylinder is connected with the sliding plug body; the sleeve comprises a barrel body 55 with a hollow chamber with one open end inside and a cover body 56 covering the open opening of the hollow chamber, wherein the middle part of the cover body 56 is provided with a through hole for the cylinder of the plunger to pass through.

Preferably, the column is spaced from the through hole.

Further, a limit groove 57 is formed on one side surface of the cover 56 located in the hollow chamber of the sleeve 49, and one end of the first damping spring 48 is limited and stopped in the limit groove 57.

Further, the inner bottom wall of the hollow chamber of the cylinder 55 is provided with a limiting groove 57, and one end of the second damping spring 51 is limited and stopped in the limiting groove 57.

As an embodiment of this embodiment, the first connecting structure 44 is a connecting thread provided at one end of the cylinder, and the connecting thread cooperates with a nut to fixedly connect the plunger to the supported damper;

the second connecting structure 53 is a connecting thread arranged at one end of the sleeve, and the connecting thread is matched with the nut to fixedly connect the sleeve to the fixed support body.

As an embodiment of this embodiment, a friction plate is disposed on the outer circumference of the sliding plug body and keeps in contact with the inner wall of the hollow chamber of the sleeve.

As an implementation manner of this embodiment, the first damping spring and the second damping spring have different elastic coefficients;

The second damper spring 51 of the damper device of the present embodiment has a function of supporting gravity and absorbing a downward impact force; the first damper spring 48 has an effect of restricting the upward movement of the plunger 47, absorbing an upward impact force. A certain clearance h is set between the sleeve and the plunger, so that the shock absorber can swing left and right to a certain degree. The damping device of the embodiment can effectively damp, realize the stable operation of the washing machine and reduce vibration and noise generated along with the vibration.

EXAMPLE six

As shown in fig. 1 to 8 and 21 to 23, a shock absorbing device 36 for a washing machine of the present embodiment includes:

a plunger 47 having a first connecting structure 44 at one end;

a sleeve 49, which has a hollow chamber with an opening at one end, the other end of the plunger 47 is slidably disposed in the hollow chamber of the sleeve 49, and a second connecting structure 53 is disposed on the end of the sleeve 49 opposite to the opening of the hollow chamber;

the first damping spring 48 is sleeved outside the plunger 47, and two ends of the first damping spring respectively abut against the plunger 47 and the sleeve 49;

and the second damping spring 51 is sleeved in the hollow cavity of the sleeve 49.

As an embodiment of the present embodiment, a sliding plug is disposed at one end of the plunger 47 located in the hollow chamber of the sleeve 49;

the second damping spring 51 is sleeved outside the plunger 47 in the hollow cavity, one end of the second damping spring abuts against the inner wall of the hollow cavity of the sleeve 49, and the other end of the second damping spring abuts against one side of the sliding plug body;

and/or the second damping spring 51 is sleeved in the hollow cavity of the sleeve, one end of the second damping spring abuts against the inner wall of the hollow cavity of the sleeve 49, and the other end of the second damping spring abuts against the other side of the sliding plug body.

As an implementation manner of this embodiment, the plunger includes a cylinder, one end of the cylinder has a first connecting structure, and the other end of the cylinder is connected to the sliding plug body; the sleeve comprises a barrel body and a cover body, wherein the barrel body is internally provided with a hollow cavity with one open end, the cover body is covered on the open opening of the hollow cavity, and the middle part of the cover body is provided with a through hole for the cylinder of the plunger to pass through.

Preferably, the column is spaced from the through hole.

As an implementation manner of this embodiment, the plunger is provided with a first bracket at one end close to the first connecting structure, the sleeve is provided with a second bracket at one end close to the second connecting structure, one end of the first damping spring abuts against the first bracket, and the other end abuts against the second bracket.

As an implementation manner of this embodiment, one end of the plunger close to the first connecting structure has a limiting protrusion, the first bracket is an annular flange, the center of the first bracket has a limiting groove, and the limiting groove of the first bracket is matched with the limiting protrusion on the plunger to realize the limiting installation of the first bracket;

preferably, the first connecting structure is connected with the supported damper, the second connecting structure is connected with the fixed support, and the elastic coefficient of the first damper spring is greater than that of the second damper spring.

The sleeve 49 of the present embodiment has a cover 56, and the first damping spring 48 is disposed in the sleeve between the friction plate 54 and the cover 56 to prevent a large upward impact force of the outer tub, and has a limiting function in the extending direction of the plunger 47 or the damping device to prevent the outer tub connected to the damping device from moving greatly. And the second bracket is arranged on the sleeve, the second damping spring 51 is placed behind the second bracket through a tool, pressure is applied through the tool to shorten, the first bracket is provided with an assembly groove, the width of the first bracket is larger than the diameter of the plunger, the tool is removed, the restoring force of the first damping spring 48 is completely assembled, and the plunger is preferably provided with a structure matched with the matching groove of the upper support to prevent shaking and vibration.

The first damping spring 48 has a supporting gravity action, absorbs downward impact force, and has a limit function, preventing the plunger from being compressed indefinitely into the barrel.

A certain clearance h is set between the sleeve and the plunger, so that the shock absorber can swing left and right to a certain degree.

The damping device of this embodiment sets up at the inside and outside spring of sleeve, has reduced the length of bumper shock absorber, and the function does not reduce. Effectively increasing the inner space of the shell of the washing machine. The vibration reduction device can effectively reduce vibration, realize stable operation of the washing machine and reduce vibration and noise generated along with the vibration.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A shock-absorbing device for a washing machine, comprising:

a plunger having a first connecting structure at one end;

the first damping spring is sleeved outside the plunger;

the second damping spring is sleeved outside the sleeve;

2. The damping device as claimed in claim 1, wherein the plunger has a first bracket at one end adjacent to the first connecting structure, the sleeve has a second bracket at one end adjacent to the second connecting structure, the sliding sleeve has a circumferentially protruding limit protrusion, the first damping spring has one end abutting against the first bracket and the other end abutting against the limit protrusion, and the second damping spring has one end abutting against the second bracket and the other end abutting against the limit protrusion.

3. The damping device for the washing machine as claimed in claim 2, wherein the plunger has a position-limiting protrusion at an end thereof adjacent to the first connecting structure, the first bracket is an annular flange, and a position-limiting recess is formed at the center of the first bracket, and the position-limiting recess of the first bracket is matched with the position-limiting protrusion of the plunger to realize the position-limiting installation of the first bracket;

4. A damper device for a washing machine according to claim 1, wherein the first damper spring and the second damper spring have different elastic coefficients;

5. A shock absorbing device for a washing machine as claimed in claim 1, wherein a friction lining of the sleeve is disposed in the hollow chamber of the sleeve, and an end of the plunger is fitted into the hollow chamber of the sleeve to contact the friction lining of the sleeve.

6. A damper for a washing machine as claimed in claim 5, wherein said sleeve friction plate is an annular friction plate, and a plurality of annular friction plates are uniformly arranged in the hollow chamber of said sleeve in the axial direction thereof.

7. A shock-absorbing device for a washing machine as claimed in claim 1, wherein a friction plate of the sliding sleeve is provided in the sliding sleeve to be in contact with the outer wall of the plunger/sleeve.

8. The damping device for the washing machine as claimed in claim 1, wherein the first connecting structure is a connecting screw thread provided at an end of the plunger, the connecting screw thread cooperating with a nut to fixedly connect the plunger to the supported damping body;

9. A pull type washing machine having a shock-absorbing device for a washing machine according to any one of claims 1 to 8, comprising a housing having a receiving chamber therein, and a washing unit having an opening formed in a side wall of the housing; the washing unit is arranged in the accommodating cavity inside the shell and can be pushed in/pulled out from the opening of the shell;

the washing unit comprises a mounting frame and a washing barrel assembly arranged on the mounting frame, and the washing barrel assembly is supported in the mounting frame through a damping device.

10. The pull-out washing machine as claimed in claim 9, wherein the washing tub assembly comprises an outer tub and an inner tub rotatably disposed in the outer tub, the mounting frame comprises a base, and the outer tub is mounted on the base through a shock-absorbing device;