CN109957921A - Damper and device for clothing processing including the damper - Google Patents
Damper and device for clothing processing including the damper Download PDFInfo
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- CN109957921A CN109957921A CN201711437008.4A CN201711437008A CN109957921A CN 109957921 A CN109957921 A CN 109957921A CN 201711437008 A CN201711437008 A CN 201711437008A CN 109957921 A CN109957921 A CN 109957921A
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- damper
- chamber
- plunger
- damping
- liquid capsule
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
- D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to washing machine technology fields, and in particular to a kind of damper and the washing machine including the damper.Present invention seek to address that the problems such as damping force of damper in the prior art is immutable, effectiveness in vibration suppression is poor.For this purpose, damper of the invention includes: sleeve, the sleeve has first chamber；Plunger, the plunger have second chamber, and the plunger is slidably inserted into the first chamber；The damper further includes the throttling element being set in the first chamber, the throttling element includes the pipe structure of second chamber described in partial insertion, several first damping holes are provided on the tube wall of the pipe structure, the pipe structure has been disposed radially capping, at least one second damping hole is provided in the capping, a part in several described first damping holes is in the sliding of the plunger opens/closes state, to make the first chamber and the second chamber communicate with each other by second damping hole and first damping hole in the open state.The damping force that damper of the invention generates can be changed at any time and stability is high.
Description
Technical field
The present invention relates to clothing processing technology fields, and in particular to a kind of damper and the clothing processing including the damper
Device.
Background technique
Washing machine is a kind of clean type electric appliance that clothing is washed using electric energy, with the quickening pace of modern life and people
To the raising that life comfort level requires, washing machine has become one of essential household electrical appliance in people's daily life.But
It is that washing machine can generate apparent vibration and noise in the courses of work such as washing and dehydration, influences user's body to a certain extent
It tests.
It is open in order to solve the problems, such as that washing machine generates apparent vibration and noise in the courses of work such as washing and dehydration
Number a kind of " damper and washing machine, dryer " is disclosed for the application for a patent for invention of CN105986407A.Wherein, damper packet
Sleeve and the first plunger open at one end are included, one end of the first plunger is fixing end, and the other end is inserted into from the opening of sleeve to be covered
Cylinder, and can be slided along sleeve, the friction plate with the first plunger frictional fit is provided between the first plunger and sleeve；It is set on sleeve
Flexible part and be connected with elastic component and can relative sleeve Frictional Slipping the second Frictional Slipping device, and when the first plunger phase
After moving past predetermined position to sleeve, the first plunger and the second Frictional Slipping device abut against simultaneously compression elastic piece.
The damper mainly passes through the first plunger and carries out friction generation in reciprocatory movement with friction plate in sleeve
Frictional force and the frictional force for pushing the second Frictional Slipping device compression elastic piece to generate after the first plunger is more than predetermined position
And elastic force, realize the purpose for reducing vibration of washing machine.But when the first plunger moves back and forth in sleeve, only
When one plunger relative sleeve does compression movement and is more than predetermined position, frictional force and elastic component that the second Frictional Slipping device generates
The elastic force of generation can just intervene, and when being less than predetermined position and the first plunger relative sleeve does extensional motion, it generates
Frictional force be constant power, it is unrelated with the amplitude of washing machine.Therefore, the damping force for being used to reduce vibration which generates
It cannot all be adjusted at any time according to the increase of first piston relative sleeve movement travel, effectiveness in vibration suppression needs further to be changed
It is kind.In addition, the damper of this setup is after used a period of time, frictional force can be slided due to friction plate and the second friction
It moves the abrasion of device and reduces, and then damper gradually fails, cause the noise of washing machine and vibration increasing, and then influence
Usage experience.
Correspondingly, this field needs a kind of new damper to solve the above problems.
Summary of the invention
It is worked in washing and dehydration etc. in order to solve existing damper in order to solve the above problem in the prior art
The problem of causing damper to be easy failure due to abrasion of effectiveness in vibration suppression difference and drag ring etc. in journey, the present invention provides
A kind of damper, the damper include: sleeve, and the sleeve has first chamber；Plunger, the plunger have second chamber,
The plunger is slidably inserted into the first chamber；The damper further includes being set in the first chamber
Throttling element, the throttling element includes the pipe structure of second chamber described in partial insertion, is provided on the tube wall of the pipe structure
Several first damping holes, the pipe structure have been disposed radially capping, at least one second damping is provided in the capping
Hole, a part in several described first damping holes is in the sliding of the plunger opens/closes state, described to make
First chamber and the second chamber by second damping hole and first damping hole in the open state each other
Connection.
In the optimal technical scheme of above-mentioned damper, the damper further includes liquid capsule, and the liquid capsule is set to described
In first chamber, the open end of the liquid capsule is fixedly connected with the plunger, wherein the inner cavity of the liquid capsule and/or described
Damper fluid is filled in two chambers, the throttling element is set in the liquid capsule.
In the optimal technical scheme of above-mentioned damper, the capping is set to the pipe structure close to the end of the plunger
Portion or the capping are set to the interior intracavitary of the pipe structure and are fixed on the inner wall of the pipe structure.
In the optimal technical scheme of above-mentioned damper, the throttling element further includes pedestal, and the pedestal is set to described
The one end of liquid capsule far from the plunger is so that the liquid capsule to be placed between the sleeve and the pedestal.
In the optimal technical scheme of above-mentioned damper, several described first damping holes point axial along the pipe structure
Cloth density is same or different.
In the optimal technical scheme of above-mentioned damper, distribution density of first damping hole along the pipe structure axial direction
To be gradually reduced from middle part to two sides.Since the small damping force of the amplitude in middle position is small, when distribution density is this situation, when
When roller is generated vibration by impact force, no matter plunger is pressed fit into or pulls out the first chamber of sleeve, it is available gradually
The damping force of raising.
In the optimal technical scheme of above-mentioned damper, the end of the open end of the liquid capsule and the plunger is fixed to be connected
Connect, the end of the plunger by several described first damping holes be divided into first part in the inner cavity in the liquid capsule and
The distribution of second part in the second chamber, the first damping hole in the first part and the second part is close
It spends identical or not identical.
In the optimal technical scheme of above-mentioned damper, the distribution density of the first damping hole in the first part is greater than
The distribution density of second part, the first damping hole in the first part is same or different, and in the second part
The distribution density of one damping hole is same or different.
In the optimal technical scheme of above-mentioned damper, the distribution density of the first damping hole in the first part is less than
The distribution density of second part, the first damping hole in the first part is same or different, and in the second part
The distribution density of one damping hole is same or different in the optimal technical scheme of above-mentioned damper,
The present invention also provides a kind of device for clothing processing, which includes described in any of the above-described scheme
Damper.If device for clothing processing is roller washing machine, roller washing machine includes shell and the roller that is set in shell, roller
In the housing by the support of multiple dampers, at least one of damper is damper described in above-mentioned any scheme.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, damper includes having the
The sleeve of one chamber and plunger equipped with second chamber, plunger are slidably inserted into first chamber；First chamber
In be provided with liquid capsule, the open end of liquid capsule is fixedly connected with plunger by pressure ring, is filled in the inner cavity of liquid capsule and/or second chamber
There is damper fluid, throttling element is additionally provided in liquid capsule, throttling element includes bottom plate and pipe structure, and pipe structure is inserted into second chamber, pipe
Structure is equipped with several first damping holes, and a part in several damping holes is in the sliding of plunger and opens/closes shape
State, the end of pipe structure are provided with capping, and the second damping hole, liquid capsule and second chamber are provided in capping by the second damping hole
And the first damping hole in the open state communicates with each other.Throttling element is configured by the setting of liquid capsule and in liquid capsule, is made
High-precision flowing of the damper fluid between first chamber and second chamber in liquid capsule.Specifically, being moved to the left in plunger
When first chamber being made to generate positive pressure, gradually decreased for being connected to the quantity of the first damping hole of liquid capsule and second chamber, to make
Damper fluid is increasing by the difficulty that the first damping hole and second enter in second chamber, and fuel-displaced damping force is increasingly
Height, the difficulty for eliminating liquid capsule positive pressure is increasing, so that the damping force that plunger is subject to is also bigger.Moving right in plunger makes first
When chamber generates negative pressure, gradually increase for being connected to the quantity of the first damping hole of liquid capsule and second chamber, so that damping be made to flow
Body is increasing by the difficulty that the first damping hole and second enter in liquid capsule, and fuel-displaced damping force is higher and higher, eliminates liquid
The difficulty of capsule negative pressure is increasing, so that the damping force that plunger is subject to is also bigger.
Therefore, in damper of the invention, as stroke of the plunger in sleeve increases, fuel-displaced damping force is gradually mentioned
Height, the damping force of damper is also increasing, so that the vibration and noise device for significantly reducing washing machine generates.Namely
It says, the vibration of washing machine is bigger, and stroke of the plunger in sleeve is i.e. bigger, and fuel-displaced damping force will improve, at this time damper
The damping force of offer is bigger, so that the vibration and noise device for significantly reducing washing machine generates, and then optimizes damper
Performance.Also, damper of the invention also has the advantages that service life period length, damping high reliablity.
Detailed description of the invention
With reference to the accompanying drawings and in conjunction with roller washing machine to describe damper of the invention and including the clothing of the damper
Processing unit.In attached drawing:
Fig. 1 is the schematic view of the mounting position of the damper for roller washing machine of an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the damper for roller washing machine of an embodiment of the present invention；
Fig. 3 is the schematic cross-sectional view of the damper for roller washing machine of an embodiment of the present invention；
Fig. 4 A is the structural schematic diagram of the sealing structure of the damper for roller washing machine of an embodiment of the present invention；
Fig. 4 B is a kind of improvement schematic diagram of Fig. 4 A；And
Fig. 5 is enlarged diagram of the Fig. 3 at local A.
Reference signs list:
1, damper；11, sleeve；111, the first fixed part；112, first chamber；113, bloop；114, reinforcing rib；
12, plunger；121, the second fixed part；122, second chamber；13, throttling element；131, pedestal；132, pipe structure；1321, the first resistance
Buddhist nun hole；13231, seal groove；13232, sealing ring；134, it covers；1341, the second damping hole；14, liquid capsule；161, first annular
Boss；163, pressure ring；164, first annular groove；165, second annular groove；171, clip；172, claw；173, first is solid
Determine hole；174, the second fixation hole；2, shell；3, roller；4, hydraulic oil.
Specific embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining technical principle of the invention, it is not intended that limit the scope of the invention.For example, although
It is to be described in conjunction with damper fluid is hydraulic oil in specification, still, the present invention obviously can having using other forms
The damper fluid of certain viscosity, as long as the damper fluid can be by (first, second) damping hole between plunger and liquid capsule
Flowing realize that variable damping effect and damper fluid itself will not cause corrosion to plunger and liquid capsule.In addition, damping stream
Body can be the liquid including such as damping fluid, be also possible to when being extruded just movement, existing for sticky solid shape
Damp grease etc..
It should be noted that in the description of the present invention, term " center ", "upper", "lower", "left", "right", "vertical",
The direction of the instructions such as "horizontal", "inner", "outside" or the term of positional relationship are direction based on the figure or positional relationship, this
It is intended merely to facilitate description, rather than indication or suggestion described device or element must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " third " are only used
In description purpose, it is not understood to indicate or imply relative importance.
In addition it is also necessary to explanation, in the description of the present invention unless specifically defined or limited otherwise, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.To those skilled in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in the present invention.
Show with reference first to the installation site that Fig. 1, Fig. 1 are the dampers for roller washing machine of an embodiment of the present invention
It is intended to.As shown in Figure 1, roller washing machine mainly includes shell 2 and the roller being set in shell 23, roller 3 includes outer cylinder
And the inner cylinder that can be rotated relative to outer cylinder.There are two dampers 1 for setting between the lower section of outer cylinder and the bottom inside of shell 2
To reduce the vibration and noise that inner cylinder generates during rotation.Referring in particular to Fig. 1, one end of damper 1 is fixed in shell
The other end of the bottom inside of body 2, damper 1 is fixed on the bottom of outer cylinder, when roller 3 vibrates during the work time,
Damper 1 can support roller 3 and consume the vibrational energy of the generation of roller 3.Particularly, damper of the invention can basis
The amplitude adjust automatically damping force for the vibration that washing machine generates, so that damper generation be made to match with different degrees of vibration
Damping force, and then the vibrational energy for washing machine of effectively decaying, finally reduce the vibration of roller washing machine and reduce with vibration
The raw noise of movable property.It is understood that the concrete form and setting quantity of damper are not unalterable, such as can be set
There are three, four or more dampers, can be with a part for damper 1 of the invention in these dampers, another portion
It is divided into the damper of other forms.
It is the structure of the damper for roller washing machine of an embodiment of the present invention referring next to Fig. 2 and Fig. 3, Fig. 2
Schematic diagram, Fig. 3 are the schematic cross-sectional views of the damper for roller washing machine of an embodiment of the present invention.Such as Fig. 2 and Fig. 3 institute
Show and according to the orientation in Fig. 3, damper 1 mainly including sleeve 11, be set to the first fixed part 111, the column of 11 left end of sleeve
Plug 12 and the second fixed part 121 for being set to 12 right end of plunger, the first fixed part 111 are used to be connected to the roller 3 of washing machine
Bottom, the second fixed part 121 be used for be connected to washing machine shell 2 bottom inside.Wherein, plunger 12 is from the right side of sleeve
End insertion sleeve 11 can simultaneously be moved back and forth along sleeve.
Referring in particular to Fig. 3 and according to the orientation in Fig. 3, sleeve 11 has the first chamber 112 of opening to the right, in plunger 12
It is provided with the second chamber 122 of opening to the left, the left end of plunger 12 can be slidably inserted into from the right end of sleeve 11
Into first chamber 112.Preferably, the outer wall of plunger 12 and the inner wall of sleeve 11 are slideably tightly engaged into, in case plunger exists
It shakes in sliding process in first chamber 112.It is understood that can also be by (first, second) fixed part and laundry
The link position of machine is exchanged, i.e., the first fixed part 111 is connected to the bottom inside of the shell 2 of washing machine, second is consolidated
Determine the bottom that portion 121 is connected to the roller 3 of washing machine.It is provided with liquid capsule 14 in first chamber 112 and liquid capsule is fixed on second
The left end of chamber, is provided with throttling element 13 in liquid capsule 14 and throttling element is fixed on the left end of first chamber.Preferably,
The left end of closed end, that is, liquid capsule 14 of liquid capsule 14 be resisted against the left end of the first chamber 112 of sleeve 11 and preferably with set
Cylinder 11 is fixedly connected, and the right end of open end, that is, liquid capsule 14 of liquid capsule 14 is hermetically fixedly connected with the left end of plunger 12.
Referring still to Fig. 3, throttling element 13 mainly includes the pedestal 131 for the disk-like structure being adapted with the inner wall of first chamber
And be set to base right side and with pedestal 131 is integrally formed, the inner wall of outer diameter and second chamber matches pipe structure
132, pedestal 131 is fixed on the left end of first chamber, i.e. the closed end of liquid capsule 14 is held on the left of the inner wall of the first cavity
With the left side of pedestal 13, some insertion second chamber 122 of the right side of pipe structure 132, to make plunger correspond to the first chamber
The part of room is reciprocating relative to sleeve in a manner of sliding between the inner wall of sleeve and the outer wall of pipe structure.Pipe structure
Several first damping holes 1321 as variable damping hole are provided on 132, the right-hand end of pipe structure 132 is provided with capping
134, the mode that capping 134 is connected through a screw thread is fixed on the right end of pipe structure 132, is provided in capping 134 as main damping
One second damping hole 1342 in hole.The hydraulic of damper fluid is injected as in the inner cavity of liquid capsule 14 and/or second chamber 122
Oil 4, when plunger 12 slides in the first chamber 112 of sleeve 11, a part in several first damping holes 1321 is in
Opening state, so that hydraulic oil 4 can pass through the second damping hole 1342 and the first damping hole 1321 in the open state exists
It is back and forth flowed in liquid capsule 14 and second chamber 122, the generated resistance when passing through (first, second) damping hole by hydraulic oil 4
Vibrational energy is converted to thermal energy and achievees the effect that vibration-absorbing denoising by power.
It should be noted that the mode for offering the second damping hole in capping is substantially equivalent to the on the right side of pipe structure
The density of one damping hole significantly increases, thus ram compression and elongation similarly apart from when, the damping force of compression process is big
The damping force in elongation process, to realize plunger in compression travel and extended travel with different damping characteristics.With
The middle part of capping is arranged for second damping hole, if the second damping hole is oversized close in the case of the upper limit,
The diameter that the aperture of the second damping hole is approximately equal to capping at this time substantially corresponds to be not provided with covering, this when hydraulic oil be to pass through
It is flowed between liquid capsule and second chamber the inner cavity of first damping hole and pipe structure in the open state.Due to the diameter of pipe structure
Larger to size, therefore throttle is very weak, during oil inlet/fuel-displaced, the effect of variable damping is unobvious.Based on this original
Reason can adjust the second damping hole for specific product to optimize the effect of variable damping.
In addition, in the present embodiment with no restriction to the quantity and size of (first, second) damping hole, for different model
For damper 1, the quantity and diameter of the first damping hole are not quite similar.For example, for smaller damper 1
It says, the diameter of the first damping hole 1321 can be in the section of a few tenths of a mm to several millimeters；And the damper 1 of relatively large-scale
It says, the diameter of the first damping hole 1321 can be in several millimeters to more than ten millimeters of section.As the first damping hole 1321 axis with
Have angle to make hydraulic oil be able to enter/effuser structure between the axis of pipe structure 132, the first damping hole 1321 exists
Distribution density in pipe structure can uniformly perhaps the aperture of uneven single first damping hole 1321 can identical or not phase
Together, the angle between the axis of each first damping hole 1321 and the axis of pipe structure 132 can be identical or not identical.Such as pipe
It is axially disposed in structure 132 to have the first roughly the same damping hole of two rows of (front and back of the pipe structure in Fig. 3) apertures
1321 and often to ranked first damping hole 1321 be to increase (preferably gradually increasing) from left to right along axial density, and each first
It is substantially vertical between the axis of damping hole 1321 and the axis of pipe structure 132.
Preferably, liquid capsule 14 can be made by polyurethane, silica gel, rubber elastomeric material, and the main body of liquid capsule
Preferably there is ripple struction, in order to which compression/elongation deformation occurs in piston reciprocation motion process for liquid capsule.
It is being covered referring to Fig. 2 and Fig. 3 in order to reduce plunger 12 in reciprocating motion due to the noise that air is generated by compression
It is provided with bloop 113 on cylinder 11, specifically, being provided with bloop 113 in the part that sleeve 11 is engaged with plunger 12.It needs
It is noted that " part that sleeve is engaged with plunger " herein, had both included the part of permanent engagement, i.e., had been moved to most in plunger
The part still engaged with plunger in the case of right side also includes the part of process type engagement, i.e., in plunger in first chamber
Mobile process is only in the part that certain stages engage with plunger.It, can be close in sleeve and in order to improve the intensity of sleeve
The part of plunger 12 is axially disposed lateral reinforcing rib 114, or has circumferentially surrounded cricoid reinforcing rib 114.In addition,
In order to further ensure being fixedly connected between the left end of pedestal 131, the closed end of liquid capsule 14 and sleeve 11 and it is single it
Between positional relationship, can to damper 1 configure fixing piece.Referring to Fig. 3, as fixing piece include be sheathed on 11 outside of sleeve,
The clip 171 of tubular structure and several claws 172 being set on the inside of clip, it is corresponding with claw 172, on sleeve 11
Be provided with card hole, by the way that claw 172 is protruded into card hole, pedestal can be placed in first chamber 112 left end and claw it
Between, while the first fixation hole 173 and the second fixation hole 174 are also respectively provided on clip and sleeve, clip is by means of screw etc.
The cooperation of fastener and (first, second) fixation hole is fixed on sleeve close to the position of the first fixing end.It preferably, can be
Certain free travel space is reserved between the left end of one chamber 112 and the left side of claw, to advanced optimize damper
Damping property.It is understood that the realizability in order to guarantee assembly technology, clip should axially have the non-of opening
Closed-loop.Setting in this way, enable pedestal steadily in first chamber left side or can only free travel sky
Interior activity avoids so that the opposite sliding between plunger 12 and throttling element 13 more smoothly and is stablized due to pipe structure
132 the case where biasing during the work time and damper 1 is caused to fail.
It should be noted that although the present embodiment is to be integrally formed with the pedestal of throttling element with pipe structure, cover and pass through
What the form that the mode of threaded connection is fixed on pipe structure was described, but this is only intended to illustrate the principle of the present invention, not
The protection scope being designed to limit the invention.Obviously, under conditions of without departing from the principle of the invention, any type of change is all fallen
Enter among protection scope of the present invention.It is separately formed and then is fixedly connected as pedestal can be with pipe structure；For another example capping and pipe
Fixation between structure can also be realized, additionally in addition to being threadedly coupled by modes such as ultrasonic bonding, interlocking, clampings
It can be arranged in capping and the junction of pipe structure just like sealing structures such as sealing ring, sealing rings.Below with reference to Fig. 3 and with roller
The working principle of the damper 1 for roller washing machine of the invention is made for the situation of washing machine generation larger vibration brief
Explanation.
As shown in Figure 3 and according to the orientation in Fig. 3, when 12 stress of plunger is slided to the left, 14 volume of liquid capsule becomes smaller, throttling
First damping hole 1321 in the open state is reduced on part 13, and hydraulic oil 4 is squeezed, and the inner cavity of liquid capsule 14 generates positive pressure,
Hydraulic oil 4 passes sequentially through the first damping hole 1321 in the open state as variable damping hole and as the of main damping hole
Two damping holes 1341 are flowed from the inner cavity of liquid capsule 14 to second chamber 122, and hydraulic oil 4 is during flowing to second chamber 122
Damping force to the right is generated to plunger 12, the movement tendency of plunger 12 to the left is reduced, to play the effect of vibration damping, noise reduction
Fruit.Similarly, when 12 stress of plunger is slided to the right, the volume of liquid capsule 14 becomes larger, in the open state on throttling element 13 at this time
First damping hole 1321 increases, and hydraulic oil 4 is squeezed, and the inner cavity of liquid capsule 14 generates negative pressure, and hydraulic oil 4 passes sequentially through second
Damping hole 1341 and the first damping hole 1321 in the open state are flowed from second chamber 122 to the inner cavity of liquid capsule 14, liquid
Pressure oil 4 generates damping force to the left, the movement tendency of plunger 12 to the right to plunger 12 during flowing to the inner cavity of liquid capsule 14
It is reduced, to play the effect of vibration damping, noise reduction.Process of the hydraulic oil in the inner cavity of liquid capsule and the second cavity flowing of plunger
In, the first damping hole by the quantity variation in the flow path for participating in hydraulic oil that is set in pipe structure be set to
The cooperation of second damping hole of the constant number in the flow path for participating in hydraulic oil in capping, the roller of washing machine by
Impact force it is bigger, the stroke that the plunger of damper is pressed into sleeve is bigger, and the fuel-displaced damping force of hydraulic oil will step up,
I.e. damping force changes as the stroke of plunger changes, to realize the variable resistance that damping force changes with the change of impact force
Buddhist nun's effect improves loss of the viscous damping to vibration, efficiently avoids when washing machine is by unexpected large impact, due to
First damping hole number causes hydraulic oil to pass through the damping of the first damping hole greatly to form certain rigid of transmission simultaneously very little
Therefore washing machine is caused big oscillation phenomenon occur.
Preferably, referring to Fig. 3 and Fig. 4 A, Fig. 4 A is the damper for roller washing machine of an embodiment of the present invention
The structural schematic diagram of sealing structure.As illustrated in figs. 3 and 4, in order to guarantee the sealing performance between throttling element 13 and plunger,
Sealing structure is provided between pipe structure 132 and plunger 12.Inventor has found during the experiment, since plunger is in the first chamber
Intracorporal reciprocating motion is more frequent, therefore reciprocating motion of the pipe structure in the second cavity is also relatively more frequent, if sealing knot
When structure is embedded in the lesser form of radial dimension of the sealing rings such as O-ring seal using annular seal groove, then it is easy to appear by
In O-ring seal, the inside rotates and O-ring seal is caused to be worn quickly in annular seal groove.In consideration of it, inventor passes through
Repeatedly test the form of sealing structure determined with experiment are as follows: the outer wall of pipe structure is provided with seal groove 13231 and close
Sealing groove has certain width such as preferably 1/20-1/3 of the axial length of second chamber, such as 1/7-1/5, seal groove 13231
Seal cavity is formed with the inner wall of plunger 12, is equipped with sealing ring 13232 in seal cavity, sealing ring can be metal material
It can be inorganic non-metallic material, preferably such as polyurethane, rubber, thermoplastic elastomer (TPE) high molecular material material.By compared with
The cooperation of wide seal groove 13231 and sealing ring, improves the sealing performance between throttling element 13 and plunger 12, reduces two
The hydraulic oil in person gap is revealed, and the effect of viscous damping is improved.Specifically, making hydraulic oil 4 can only be by second in capping
Damping hole and the first damping hole in the open state flow between the inner cavity of liquid capsule 14 and the second chamber of plunger, guarantee
The precision for the damping force that damper provides, efficiently avoids column caused by due to damper machining accuracy, abrasion etc.
Plug is excessive with throttling element fit clearance and further results in hydraulic oil easily flowing makes the throttling of damper in excessive gap
The problem of resistance substantially reduces.Also, it is continuously in the environment of the hydraulic oil of encapsulation, is increased due to sealing ring 13232
In the service life period of sealing ring, increase the service life period of damper indirectly.It is understood that can also incite somebody to action
Seal groove 13231 is set on plunger and makes the outer wall of itself and pipe structure 13 to cooperatively form and accommodates 13232 seal cavity of sealing ring.
Referring to Fig. 4 B, Fig. 4 B is a kind of improvement schematic diagram of Fig. 4 A.As shown in Figure 4 B, as a preference, can keep
Seal groove 13231 radially matches clamping with sealing ring 13232 but will be big along the width of seal groove 13231 second chamber axial direction
In the width of sealing ring 13232, such width difference can permit sealing ring in seal groove in certain free travel (0≤h
≤ 50mm) in sliding, to advanced optimize the damping property of damper.Preferably 0≤h≤15mm, more preferably 0≤h≤
8mm with the roller amplitude of washing machine when high-speed motion state preferably to match.Specifically, the setting of wider seal groove
Damper 1 can be made to provide different damping forces under different Vibration Conditions.Such as when washing machine generates small vibration, sealing ring
13232 can be such that sub-fraction hydraulic oil 4 enters in seal groove by way of sliding in seal groove 13231, and then reduce
Resistance when hydraulic oil 4 back and forth flows in liquid capsule 14 and second chamber 122, so that damper 1 provides in small vibration
Damping force also reduces, and reduces the small vibration for the roller 3 being transmitted on the shell of washing machine by damper 1, ensure that laundry
Machine runs smoothly, and noise is small.And when washing machine generates big vibration, at this time sealing ring 13232 fast due to vibrating big and vibration velocity
It is not moved substantially relative to seal groove 13231, this is equivalent to sealing ring and is fixedly connected in seal groove, and hydraulic oil 4 is in liquid capsule
14 and second chamber 122 in the resistance that back and forth flows be basically unchanged so that in big vibration damper 1 be capable of providing it is relatively large
Damping force, thus rapidly reduce washing machine generate vibration.
Referring to Fig. 5, Fig. 5 is the enlarged diagram in Fig. 3 at the A of part, and in a kind of specific embodiment, liquid capsule passes through
Pressure ring 163 is hermetically fixedly connected with the left end of second chamber.As shown in figure 5, the right end in pressure ring 163 adds the first ring
Connected in star 164, so that the right side of pressure ring 163 forms step surface.Pressure ring is stably fixed to plunger by close-fitting mode
Left end, the open end of liquid capsule is clamped between pressure ring and the left end of plunger.Specifically, it is cylindrical in shape the opening of the liquid capsule 14 of structure
End includes axial clamping section and radial clamping section, is provided with second annular groove 165 on the left end end face of plunger 45, the
The radial outside of second ring groove 165 is provided with first annular boss 161, and the axial clamping section of liquid capsule is clamped in pressure ring and pipe
In the axial annular gap that structure is formed, the radial clamping section of liquid capsule is clamped in first annular groove 164 and the second annular is recessed
In the radial ringed gap that slot 165 is formed, pressure ring is fixed on column by the tight fit of step surface and first annular boss 161
The left end of plug 12.So, it after the left end of plunger installs throttling element and liquid capsule, is promoted to the right by pressure ring, liquid capsule
The axial clamping section of open end be then pressed into the centre bore of pressure ring, the radial clamping section of the open end of liquid capsule then forms thickening
Portion is simultaneously squeezed into radial ringed gap, i.e., so as to it is more effective, be reliably achieved between the open end of liquid capsule and plunger
Fit sealing.Obviously, between pressure ring 163 and the left end face of plunger 12 can also by bolt, ultrasonic bonding, bonding with
And the modes such as buckle realize fastening.And the free end of liquid capsule can also realize that sealing is solid by the other structures such as abaculus and plunger
Fixed connection.
As can be seen that in damper of the invention, when damper is in the stable state for being not affected by ambient pressure, with
The first damping hole for being distributed in pipe structure axial direction is divided into two parts, i.e. first in the inner cavity in liquid capsule for boundary by pressure ring 163
Part and the second part in second chamber.Wherein, the first damping hole number of first part and second part and/or close
Degree and/or aperture and/or angle can be identical or not identical.Such as close to liquid capsule throttling hole number more than or density it is big,
Can make ram compression and elongation similarly apart from when, the damping force of compression process is less than damping force in elongation process, otherwise also
So.It should be noted that the end in addition to pipe structure is arranged in is covered, any axial position for the pipe structure that can also be arranged,
If radial direction is placed in the lumen portion of pipe structure, at this point, the first damping hole of second part is should be between pressure ring and capping
Part.
In short, in damper of the invention, 1) by the setting of liquid capsule and throttling element, by hydraulic oil in the inner cavity of liquid capsule
Flowing between the second chamber of plunger realizes the vibration and noise reducing of variable damping with hydraulic way；2) by pipe structure
The cooperation of first damping hole and the second damping hole in capping optimizes effectiveness in vibration suppression and avoids the rigidity vibration under large impact
It is dynamic；3) by the setting of (seal groove, sealing ring), on the one hand, make hydraulic oil can only by the second damping hole in capping and
First damping hole in the open state flows between the inner cavity and second chamber of liquid capsule, ensure that the damping that damper provides
The precision of power, to efficiently avoid plunger caused by due to damper machining accuracy, abrasion etc. and throttling element cooperation
Gap is excessive and further resulting in hydraulic oil and easily flowing in excessive gap substantially reduces the throttle resistance of damper
Problem.
In addition it should be pointed out that although the above preferred embodiment is illustrated by taking roller washing machine as an example,
But this is not intended to limit protection scope of the present invention, it may occur to persons skilled in the art that, in addition to roller washing machine, this
Invention can also be applied to other device for clothing processing, such as can also be applied to dryer and shoe washing machine with identical or phase
As vibration damping demand device.
So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement will fall within the scope of protection of the present invention.
Claims (10)
1. a kind of damper, comprising:
Sleeve, the sleeve have first chamber；
Plunger, the plunger have second chamber, and the plunger is slidably inserted into the first chamber；
It is characterized in that, the damper further includes the throttling element being set in the first chamber, the throttling element includes portion
Divide the pipe structure of the insertion second chamber, is provided with several the first damping holes, the pipe knot on the tube wall of the pipe structure
Structure has been disposed radially capping, at least one second damping hole is provided in the capping,
A part in several described first damping holes is in the sliding of the plunger opens/closes state, to make
First chamber and the second chamber is stated to connect each other by second damping hole and the first damping hole in the open state
It is logical.
2. damper according to claim 1, which is characterized in that the damper further includes liquid capsule, the liquid capsule setting
In the first chamber, the open end of the liquid capsule is fixedly connected with the plunger,
Wherein, it is filled with damper fluid in the inner cavity of the liquid capsule and/or the second chamber, the throttling element is set to described
In liquid capsule.
3. damper according to claim 2, which is characterized in that the capping is set to the pipe structure close to the column
The end of plug, or
The capping is set to the interior intracavitary of the pipe structure and is fixed on the inner wall of the pipe structure.
4. damper according to claim 3, which is characterized in that the throttling element further includes pedestal, the pedestal setting
In the one end of the liquid capsule far from the plunger so that the liquid capsule to be placed between the sleeve and the pedestal.
5. damper according to any one of claim 1 to 4, which is characterized in that several described the first damping hole edges
The distribution density of the pipe structure axial direction is same or different.
6. damper according to claim 5, which is characterized in that first damping hole point axial along the pipe structure
Cloth density is to be gradually reduced from middle part to two sides.
7. damper according to claim 5, which is characterized in that the open end of the liquid capsule and the end of the plunger are solid
Fixed connection, several described first damping holes are divided into first in the inner cavity in the liquid capsule by the end of the plunger
Point and the second part in the second chamber,
The first part is not identical or identical with the distribution density of the first damping hole in the second part.
8. damper according to claim 7, which is characterized in that the distribution of the first damping hole in the first part is close
Degree is greater than second part,
The distribution density of the first damping hole in the first part is same or different, the first damping in the second part
The distribution density in hole is same or different.
9. damper according to claim 7, which is characterized in that the distribution of the first damping hole in the first part is close
Degree is less than second part,
The distribution density of the first damping hole in the first part is same or different, the first damping in the second part
The distribution density in hole is same or different.
10. a kind of device for clothing processing, which is characterized in that the device for clothing processing includes such as any one of claims 1 to 9
The damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711437008.4A CN109957921B (en) | 2017-12-26 | 2017-12-26 | Damper and laundry treating apparatus including the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711437008.4A CN109957921B (en) | 2017-12-26 | 2017-12-26 | Damper and laundry treating apparatus including the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109957921A true CN109957921A (en) | 2019-07-02 |
| CN109957921B CN109957921B (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711437008.4A Active CN109957921B (en) | 2017-12-26 | 2017-12-26 | Damper and laundry treating apparatus including the same |
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| CN (1) | CN109957921B (en) |
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| EP0478273A2 (en) * | 1990-09-25 | 1992-04-01 | Bridgestone Corporation | Vibration damping device |
| CN102359529A (en) * | 2011-09-12 | 2012-02-22 | 吕再昌 | Piston type hydropneumatic buffer |
| CN202597572U (en) * | 2012-04-27 | 2012-12-12 | 中国直升机设计研究所 | Double-cavity buffering device |
| CN203189596U (en) * | 2013-04-02 | 2013-09-11 | 江苏昌力油缸有限公司 | Controllable reset damping oil cylinder |
| CN204780319U (en) * | 2015-06-30 | 2015-11-18 | 张志雄 | Squirrel -cage motor screw thread piston dry -cleaning cylinder of moving away to avoid possible earthquakes |
| CN206175555U (en) * | 2016-11-16 | 2017-05-17 | 温岭市宇嘉机械有限公司 | Hydraulic shock absorber |
| CN107339360A (en) * | 2017-09-08 | 2017-11-10 | 中航飞机起落架有限责任公司 | A kind of undercarriage buffer |
| CN109385823A (en) * | 2017-08-14 | 2019-02-26 | 青岛海尔洗衣机有限公司 | Damper and device for clothing processing including the damper |
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2017
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0478273A2 (en) * | 1990-09-25 | 1992-04-01 | Bridgestone Corporation | Vibration damping device |
| CN102359529A (en) * | 2011-09-12 | 2012-02-22 | 吕再昌 | Piston type hydropneumatic buffer |
| CN202597572U (en) * | 2012-04-27 | 2012-12-12 | 中国直升机设计研究所 | Double-cavity buffering device |
| CN203189596U (en) * | 2013-04-02 | 2013-09-11 | 江苏昌力油缸有限公司 | Controllable reset damping oil cylinder |
| CN204780319U (en) * | 2015-06-30 | 2015-11-18 | 张志雄 | Squirrel -cage motor screw thread piston dry -cleaning cylinder of moving away to avoid possible earthquakes |
| CN206175555U (en) * | 2016-11-16 | 2017-05-17 | 温岭市宇嘉机械有限公司 | Hydraulic shock absorber |
| CN109385823A (en) * | 2017-08-14 | 2019-02-26 | 青岛海尔洗衣机有限公司 | Damper and device for clothing processing including the damper |
| CN107339360A (en) * | 2017-09-08 | 2017-11-10 | 中航飞机起落架有限责任公司 | A kind of undercarriage buffer |
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|---|---|
| CN109957921B (en) | 2021-11-05 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20210930 Address after: 266400 Haier Industrial Park, qianwangang Road, Jiaonan City, Qingdao City, Shandong Province Applicant after: QINGDAO JIAONAN HAIER WASHING MACHINE Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266400 Haier Industrial Park, qianwangang Road, Jiaonan City, Qingdao City, Shandong Province Applicant before: QINGDAO JIAONAN HAIER WASHING MACHINE Co.,Ltd. |
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